From d1cab0860a3b8d28f84a96661a1c6177a5e3fbba Mon Sep 17 00:00:00 2001 From: Daniel McNab <36049421+DJMcNab@users.noreply.github.com> Date: Tue, 12 Nov 2024 17:31:17 +0000 Subject: Fix `shadow_unrelated`'s behaviour with closures Fixes https://github.com/rust-lang/rust-clippy/issues/10780 --- clippy_lints/src/shadow.rs | 58 +++++++++++++++++++++++++++++++++++++++------- tests/ui/shadow.rs | 14 +++++++++++ tests/ui/shadow.stderr | 26 ++++++++++++++++++++- 3 files changed, 89 insertions(+), 9 deletions(-) diff --git a/clippy_lints/src/shadow.rs b/clippy_lints/src/shadow.rs index 7ae0310b6d9..49d22377119 100644 --- a/clippy_lints/src/shadow.rs +++ b/clippy_lints/src/shadow.rs @@ -1,6 +1,9 @@ +use std::ops::ControlFlow; + use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::path_to_local_id; use clippy_utils::source::snippet; -use clippy_utils::visitors::is_local_used; +use clippy_utils::visitors::{Descend, Visitable, for_each_expr}; use rustc_data_structures::fx::FxHashMap; use rustc_hir::def::Res; use rustc_hir::def_id::LocalDefId; @@ -175,9 +178,31 @@ fn is_shadow(cx: &LateContext<'_>, owner: LocalDefId, first: ItemLocalId, second false } +/// Checks if the given local is used, except for in child expression of `except`. +/// +/// This is a version of [`is_local_used`](clippy_utils::visitors::is_local_used), used to +/// implement the fix for . +pub fn is_local_used_except<'tcx>( + cx: &LateContext<'tcx>, + visitable: impl Visitable<'tcx>, + id: HirId, + except: Option, +) -> bool { + for_each_expr(cx, visitable, |e| { + if except.is_some_and(|it| it == e.hir_id) { + ControlFlow::Continue(Descend::No) + } else if path_to_local_id(e, id) { + ControlFlow::Break(()) + } else { + ControlFlow::Continue(Descend::Yes) + } + }) + .is_some() +} + fn lint_shadow(cx: &LateContext<'_>, pat: &Pat<'_>, shadowed: HirId, span: Span) { let (lint, msg) = match find_init(cx, pat.hir_id) { - Some(expr) if is_self_shadow(cx, pat, expr, shadowed) => { + Some((expr, _)) if is_self_shadow(cx, pat, expr, shadowed) => { let msg = format!( "`{}` is shadowed by itself in `{}`", snippet(cx, pat.span, "_"), @@ -185,7 +210,7 @@ fn lint_shadow(cx: &LateContext<'_>, pat: &Pat<'_>, shadowed: HirId, span: Span) ); (SHADOW_SAME, msg) }, - Some(expr) if is_local_used(cx, expr, shadowed) => { + Some((expr, except)) if is_local_used_except(cx, expr, shadowed, except) => { let msg = format!("`{}` is shadowed", snippet(cx, pat.span, "_")); (SHADOW_REUSE, msg) }, @@ -232,15 +257,32 @@ fn is_self_shadow(cx: &LateContext<'_>, pat: &Pat<'_>, mut expr: &Expr<'_>, hir_ /// Finds the "init" expression for a pattern: `let = ;` (or `if let`) or /// `match { .., => .., .. }` -fn find_init<'tcx>(cx: &LateContext<'tcx>, hir_id: HirId) -> Option<&'tcx Expr<'tcx>> { - for (_, node) in cx.tcx.hir().parent_iter(hir_id) { +/// +/// For closure arguments passed to a method call, returns the method call, and the `HirId` of the +/// closure (which will later be skipped). This is for +fn find_init<'tcx>(cx: &LateContext<'tcx>, hir_id: HirId) -> Option<(&'tcx Expr<'tcx>, Option)> { + for (hir_id, node) in cx.tcx.hir().parent_iter(hir_id) { let init = match node { - Node::Arm(_) | Node::Pat(_) => continue, + Node::Arm(_) | Node::Pat(_) | Node::Param(_) => continue, Node::Expr(expr) => match expr.kind { - ExprKind::Match(e, _, _) | ExprKind::Let(&LetExpr { init: e, .. }) => Some(e), + ExprKind::Match(e, _, _) | ExprKind::Let(&LetExpr { init: e, .. }) => Some((e, None)), + // If we're a closure argument, then a parent call is also an associated item. + ExprKind::Closure(_) => { + if let Some((_, node)) = cx.tcx.hir().parent_iter(hir_id).next() { + match node { + Node::Expr(expr) => match expr.kind { + ExprKind::MethodCall(_, _, _, _) | ExprKind::Call(_, _) => Some((expr, Some(hir_id))), + _ => None, + }, + _ => None, + } + } else { + None + } + }, _ => None, }, - Node::LetStmt(local) => local.init, + Node::LetStmt(local) => local.init.map(|init| (init, None)), _ => None, }; return init; diff --git a/tests/ui/shadow.rs b/tests/ui/shadow.rs index 258dba9dd83..30b96277f99 100644 --- a/tests/ui/shadow.rs +++ b/tests/ui/shadow.rs @@ -119,4 +119,18 @@ fn ice_8748() { }]; } +// https://github.com/rust-lang/rust-clippy/issues/10780 +fn shadow_closure() { + // These are not shadow_unrelated; but they are correctly shadow_reuse + let x = Some(1); + #[allow(clippy::shadow_reuse)] + let y = x.map(|x| x + 1); + let z = x.map(|x| x + 1); + let a: Vec> = [100u8, 120, 140] + .iter() + .map(|i| i.checked_mul(2)) + .map(|i| i.map(|i| i - 10)) + .collect(); +} + fn main() {} diff --git a/tests/ui/shadow.stderr b/tests/ui/shadow.stderr index fdd149a2216..5d2d7060450 100644 --- a/tests/ui/shadow.stderr +++ b/tests/ui/shadow.stderr @@ -280,5 +280,29 @@ note: previous binding is here LL | let x = 1; | ^ -error: aborting due to 23 previous errors +error: `x` is shadowed + --> tests/ui/shadow.rs:128:20 + | +LL | let z = x.map(|x| x + 1); + | ^ + | +note: previous binding is here + --> tests/ui/shadow.rs:125:9 + | +LL | let x = Some(1); + | ^ + +error: `i` is shadowed + --> tests/ui/shadow.rs:132:25 + | +LL | .map(|i| i.map(|i| i - 10)) + | ^ + | +note: previous binding is here + --> tests/ui/shadow.rs:132:15 + | +LL | .map(|i| i.map(|i| i - 10)) + | ^ + +error: aborting due to 25 previous errors -- cgit 1.4.1-3-g733a5 From febe5491133b4b56d6c798552b96f5edc5e09479 Mon Sep 17 00:00:00 2001 From: blyxyas Date: Sat, 2 Nov 2024 18:29:54 +0100 Subject: Fix needless_match FP on if-lets --- clippy_lints/src/matches/needless_match.rs | 6 ++- tests/ui/needless_match.fixed | 53 ++++++++++++++++++++++++++ tests/ui/needless_match.rs | 61 ++++++++++++++++++++++++++++++ tests/ui/needless_match.stderr | 14 ++++++- 4 files changed, 131 insertions(+), 3 deletions(-) diff --git a/clippy_lints/src/matches/needless_match.rs b/clippy_lints/src/matches/needless_match.rs index 6f7d6902640..73822314b4b 100644 --- a/clippy_lints/src/matches/needless_match.rs +++ b/clippy_lints/src/matches/needless_match.rs @@ -3,7 +3,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::{is_type_diagnostic_item, same_type_and_consts}; use clippy_utils::{ - eq_expr_value, get_parent_expr_for_hir, higher, is_else_clause, is_res_lang_ctor, over, path_res, + SpanlessEq, eq_expr_value, get_parent_expr_for_hir, higher, is_else_clause, is_res_lang_ctor, over, path_res, peel_blocks_with_stmt, }; use rustc_errors::Applicability; @@ -90,7 +90,9 @@ fn check_if_let_inner(cx: &LateContext<'_>, if_let: &higher::IfLet<'_>) -> bool } // Recursively check for each `else if let` phrase, - if let Some(ref nested_if_let) = higher::IfLet::hir(cx, if_else) { + if let Some(ref nested_if_let) = higher::IfLet::hir(cx, if_else) + && SpanlessEq::new(cx).eq_expr(nested_if_let.let_expr, if_let.let_expr) + { return check_if_let_inner(cx, nested_if_let); } diff --git a/tests/ui/needless_match.fixed b/tests/ui/needless_match.fixed index a936eb463f9..06c6169d0da 100644 --- a/tests/ui/needless_match.fixed +++ b/tests/ui/needless_match.fixed @@ -245,4 +245,57 @@ mod issue9084 { } } +fn a() -> Option<()> { + Some(()) +} +fn b() -> Option<()> { + Some(()) +} +fn c() -> Option<()> { + Some(()) +} + +#[allow(clippy::ifs_same_cond)] +pub fn issue13574() -> Option<()> { + // Do not lint. + // The right hand of all these arms are different functions. + let _ = { + if let Some(a) = a() { + Some(a) + } else if let Some(b) = b() { + Some(b) + } else if let Some(c) = c() { + Some(c) + } else { + None + } + }; + + const A: Option<()> = Some(()); + const B: Option<()> = Some(()); + const C: Option<()> = Some(()); + const D: Option<()> = Some(()); + + let _ = { + if let Some(num) = A { + Some(num) + } else if let Some(num) = B { + Some(num) + } else if let Some(num) = C { + Some(num) + } else if let Some(num) = D { + Some(num) + } else { + None + } + }; + + // Same const, should lint + let _ = { + A + }; + + None +} + fn main() {} diff --git a/tests/ui/needless_match.rs b/tests/ui/needless_match.rs index b1dd6ff075d..6b71de68e1b 100644 --- a/tests/ui/needless_match.rs +++ b/tests/ui/needless_match.rs @@ -289,4 +289,65 @@ mod issue9084 { } } +fn a() -> Option<()> { + Some(()) +} +fn b() -> Option<()> { + Some(()) +} +fn c() -> Option<()> { + Some(()) +} + +#[allow(clippy::ifs_same_cond)] +pub fn issue13574() -> Option<()> { + // Do not lint. + // The right hand of all these arms are different functions. + let _ = { + if let Some(a) = a() { + Some(a) + } else if let Some(b) = b() { + Some(b) + } else if let Some(c) = c() { + Some(c) + } else { + None + } + }; + + const A: Option<()> = Some(()); + const B: Option<()> = Some(()); + const C: Option<()> = Some(()); + const D: Option<()> = Some(()); + + let _ = { + if let Some(num) = A { + Some(num) + } else if let Some(num) = B { + Some(num) + } else if let Some(num) = C { + Some(num) + } else if let Some(num) = D { + Some(num) + } else { + None + } + }; + + // Same const, should lint + let _ = { + if let Some(num) = A { + Some(num) + } else if let Some(num) = A { + Some(num) + } else if let Some(num) = A { + Some(num) + } else { + None + } + }; + + None +} + fn main() {} diff --git a/tests/ui/needless_match.stderr b/tests/ui/needless_match.stderr index 5bcab467aea..1410585cb2e 100644 --- a/tests/ui/needless_match.stderr +++ b/tests/ui/needless_match.stderr @@ -131,5 +131,17 @@ LL | | _ => e, LL | | }; | |_________^ help: replace it with: `e` -error: aborting due to 13 previous errors +error: this if-let expression is unnecessary + --> tests/ui/needless_match.rs:339:9 + | +LL | / if let Some(num) = A { +LL | | Some(num) +LL | | } else if let Some(num) = A { +LL | | Some(num) +... | +LL | | None +LL | | } + | |_________^ help: replace it with: `A` + +error: aborting due to 14 previous errors -- cgit 1.4.1-3-g733a5 From cd7cec9066f35e2fd661a69830fd57864b41ea44 Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Wed, 18 Sep 2024 00:09:34 +0200 Subject: Add new `literal_string_with_formatting_arg` lint --- CHANGELOG.md | 1 + clippy_lints/src/declared_lints.rs | 1 + clippy_lints/src/lib.rs | 3 + .../src/literal_string_with_formatting_arg.rs | 101 +++++++++++++++++++++ 4 files changed, 106 insertions(+) create mode 100644 clippy_lints/src/literal_string_with_formatting_arg.rs diff --git a/CHANGELOG.md b/CHANGELOG.md index dd3124ee9a3..3a82bfce82b 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -5639,6 +5639,7 @@ Released 2018-09-13 [`lines_filter_map_ok`]: https://rust-lang.github.io/rust-clippy/master/index.html#lines_filter_map_ok [`linkedlist`]: https://rust-lang.github.io/rust-clippy/master/index.html#linkedlist [`lint_groups_priority`]: https://rust-lang.github.io/rust-clippy/master/index.html#lint_groups_priority +[`literal_string_with_formatting_arg`]: https://rust-lang.github.io/rust-clippy/master/index.html#literal_string_with_formatting_arg [`little_endian_bytes`]: https://rust-lang.github.io/rust-clippy/master/index.html#little_endian_bytes [`logic_bug`]: https://rust-lang.github.io/rust-clippy/master/index.html#logic_bug [`lossy_float_literal`]: https://rust-lang.github.io/rust-clippy/master/index.html#lossy_float_literal diff --git a/clippy_lints/src/declared_lints.rs b/clippy_lints/src/declared_lints.rs index dff60f76b74..a3f89b3f70c 100644 --- a/clippy_lints/src/declared_lints.rs +++ b/clippy_lints/src/declared_lints.rs @@ -276,6 +276,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::literal_representation::MISTYPED_LITERAL_SUFFIXES_INFO, crate::literal_representation::UNREADABLE_LITERAL_INFO, crate::literal_representation::UNUSUAL_BYTE_GROUPINGS_INFO, + crate::literal_string_with_formatting_arg::LITERAL_STRING_WITH_FORMATTING_ARG_INFO, crate::loops::EMPTY_LOOP_INFO, crate::loops::EXPLICIT_COUNTER_LOOP_INFO, crate::loops::EXPLICIT_INTO_ITER_LOOP_INFO, diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs index c9064df25ac..44e36b99b5d 100644 --- a/clippy_lints/src/lib.rs +++ b/clippy_lints/src/lib.rs @@ -49,6 +49,7 @@ extern crate rustc_lexer; extern crate rustc_lint; extern crate rustc_middle; extern crate rustc_parse; +extern crate rustc_parse_format; extern crate rustc_resolve; extern crate rustc_session; extern crate rustc_span; @@ -196,6 +197,7 @@ mod let_with_type_underscore; mod lifetimes; mod lines_filter_map_ok; mod literal_representation; +mod literal_string_with_formatting_arg; mod loops; mod macro_metavars_in_unsafe; mod macro_use; @@ -959,6 +961,7 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_late_pass(move |_| Box::new(manual_div_ceil::ManualDivCeil::new(conf))); store.register_late_pass(|_| Box::new(manual_is_power_of_two::ManualIsPowerOfTwo)); store.register_late_pass(|_| Box::new(non_zero_suggestions::NonZeroSuggestions)); + store.register_early_pass(|| Box::new(literal_string_with_formatting_arg::LiteralStringWithFormattingArg)); store.register_late_pass(move |_| Box::new(unused_trait_names::UnusedTraitNames::new(conf))); store.register_late_pass(|_| Box::new(manual_ignore_case_cmp::ManualIgnoreCaseCmp)); store.register_late_pass(|_| Box::new(unnecessary_literal_bound::UnnecessaryLiteralBound)); diff --git a/clippy_lints/src/literal_string_with_formatting_arg.rs b/clippy_lints/src/literal_string_with_formatting_arg.rs new file mode 100644 index 00000000000..e72f0de90c6 --- /dev/null +++ b/clippy_lints/src/literal_string_with_formatting_arg.rs @@ -0,0 +1,101 @@ +use rustc_ast::ast::{Expr, ExprKind}; +use rustc_ast::token::LitKind; +use rustc_lint::{EarlyContext, EarlyLintPass}; +use rustc_parse_format::{ParseMode, Parser, Piece}; +use rustc_session::declare_lint_pass; +use rustc_span::BytePos; + +use clippy_utils::diagnostics::span_lint; + +declare_clippy_lint! { + /// ### What it does + /// Checks if string literals have formatting arguments outside of macros + /// using them (like `format!`). + /// + /// ### Why is this bad? + /// It will likely not generate the expected content. + /// + /// ### Example + /// ```no_run + /// let x: Option = None; + /// let y = "hello"; + /// x.expect("{y:?}"); + /// ``` + /// Use instead: + /// ```no_run + /// let x: Option = None; + /// let y = "hello"; + /// x.expect(&format!("{y:?}")); + /// ``` + #[clippy::version = "1.83.0"] + pub LITERAL_STRING_WITH_FORMATTING_ARG, + suspicious, + "Checks if string literals have formatting arguments" +} + +declare_lint_pass!(LiteralStringWithFormattingArg => [LITERAL_STRING_WITH_FORMATTING_ARG]); + +impl EarlyLintPass for LiteralStringWithFormattingArg { + fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &Expr) { + if let ExprKind::Lit(lit) = expr.kind { + let add = match lit.kind { + LitKind::Str => 1, + LitKind::StrRaw(nb) => nb as usize + 2, + _ => return, + }; + let fmt_str = lit.symbol.as_str(); + let lo = expr.span.lo(); + let mut current = fmt_str; + let mut diff_len = 0; + + let mut parser = Parser::new(current, None, None, false, ParseMode::Format); + let mut spans = Vec::new(); + while let Some(piece) = parser.next() { + if let Some(error) = parser.errors.last() { + // We simply ignore the errors and move after them. + if error.span.end >= current.len() { + break; + } + current = ¤t[error.span.end + 1..]; + diff_len = fmt_str.len() - current.len(); + parser = Parser::new(current, None, None, false, ParseMode::Format); + } else if let Piece::NextArgument(arg) = piece { + let mut pos = arg.position_span; + pos.start += diff_len; + pos.end += diff_len; + + let start = fmt_str[..pos.start].rfind('{').unwrap_or(pos.start); + // If this is a unicode character escape, we don't want to lint. + if start > 1 && fmt_str[..start].ends_with("\\u") { + continue; + } + + let mut end = fmt_str[pos.end..].find('}').map_or(pos.end, |found| found + pos.end); + if fmt_str[start..end].contains(':') { + end += 1; + } + spans.push( + expr.span + .with_hi(lo + BytePos((start + add) as _)) + .with_lo(lo + BytePos((end + add) as _)), + ); + } + } + if spans.len() == 1 { + span_lint( + cx, + LITERAL_STRING_WITH_FORMATTING_ARG, + spans, + "this looks like a formatting argument but it is not part of a formatting macro", + ); + } else if spans.len() > 1 { + span_lint( + cx, + LITERAL_STRING_WITH_FORMATTING_ARG, + spans, + "these look like formatting arguments but are not part of a formatting macro", + ); + } + } + } +} -- cgit 1.4.1-3-g733a5 From 922aabe348757f69b993f5d93a5bfb7fb1db38f8 Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Wed, 18 Sep 2024 00:10:16 +0200 Subject: Add regression test for `literal_string_with_formatting_arg` --- tests/ui/literal_string_with_formatting_arg.rs | 29 ++++++++++ tests/ui/literal_string_with_formatting_arg.stderr | 65 ++++++++++++++++++++++ 2 files changed, 94 insertions(+) create mode 100644 tests/ui/literal_string_with_formatting_arg.rs create mode 100644 tests/ui/literal_string_with_formatting_arg.stderr diff --git a/tests/ui/literal_string_with_formatting_arg.rs b/tests/ui/literal_string_with_formatting_arg.rs new file mode 100644 index 00000000000..539d24efe7c --- /dev/null +++ b/tests/ui/literal_string_with_formatting_arg.rs @@ -0,0 +1,29 @@ +#![warn(clippy::literal_string_with_formatting_arg)] +#![allow(clippy::unnecessary_literal_unwrap)] + +fn main() { + let x: Option = None; + let y = "hello"; + x.expect("{y} {}"); //~ literal_string_with_formatting_arg + x.expect("{:?}"); //~ literal_string_with_formatting_arg + x.expect("{y:?}"); //~ literal_string_with_formatting_arg + x.expect(" {y:?} {y:?} "); //~ literal_string_with_formatting_arg + x.expect(" {y:..} {y:?} "); //~ literal_string_with_formatting_arg + x.expect(r"{y:?} {y:?} "); //~ literal_string_with_formatting_arg + x.expect(r"{y:?} y:?}"); //~ literal_string_with_formatting_arg + x.expect(r##" {y:?} {y:?} "##); //~ literal_string_with_formatting_arg + "\\.+*?()|[]{}^$#&-~".chars().any(|x| x == 'a'); //~ literal_string_with_formatting_arg + // Ensure that it doesn't try to go in the middle of a unicode character. + x.expect("———{}"); //~ literal_string_with_formatting_arg + + // Should not lint! + format!("{y:?}"); + println!("{y:?}"); + x.expect("{{y} {x"); + x.expect("{{y:?}"); + x.expect("{y:...}"); + let _ = "fn main {\n\ + }"; + // Unicode characters escape should not lint either. + "\u{0052}".to_string(); +} diff --git a/tests/ui/literal_string_with_formatting_arg.stderr b/tests/ui/literal_string_with_formatting_arg.stderr new file mode 100644 index 00000000000..c05d4af017c --- /dev/null +++ b/tests/ui/literal_string_with_formatting_arg.stderr @@ -0,0 +1,65 @@ +error: these look like formatting arguments but are not part of a formatting macro + --> tests/ui/literal_string_with_formatting_arg.rs:7:15 + | +LL | x.expect("{y} {}"); + | ^^^^^^ + | + = note: `-D clippy::literal-string-with-formatting-arg` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::literal_string_with_formatting_arg)]` + +error: this looks like a formatting argument but it is not part of a formatting macro + --> tests/ui/literal_string_with_formatting_arg.rs:8:15 + | +LL | x.expect("{:?}"); + | ^^^^ + +error: this looks like a formatting argument but it is not part of a formatting macro + --> tests/ui/literal_string_with_formatting_arg.rs:9:15 + | +LL | x.expect("{y:?}"); + | ^^^^^ + +error: these look like formatting arguments but are not part of a formatting macro + --> tests/ui/literal_string_with_formatting_arg.rs:10:16 + | +LL | x.expect(" {y:?} {y:?} "); + | ^^^^^ ^^^^^ + +error: this looks like a formatting argument but it is not part of a formatting macro + --> tests/ui/literal_string_with_formatting_arg.rs:11:23 + | +LL | x.expect(" {y:..} {y:?} "); + | ^^^^^ + +error: these look like formatting arguments but are not part of a formatting macro + --> tests/ui/literal_string_with_formatting_arg.rs:12:16 + | +LL | x.expect(r"{y:?} {y:?} "); + | ^^^^^ ^^^^^ + +error: this looks like a formatting argument but it is not part of a formatting macro + --> tests/ui/literal_string_with_formatting_arg.rs:13:16 + | +LL | x.expect(r"{y:?} y:?}"); + | ^^^^^ + +error: these look like formatting arguments but are not part of a formatting macro + --> tests/ui/literal_string_with_formatting_arg.rs:14:19 + | +LL | x.expect(r##" {y:?} {y:?} "##); + | ^^^^^ ^^^^^ + +error: this looks like a formatting argument but it is not part of a formatting macro + --> tests/ui/literal_string_with_formatting_arg.rs:15:17 + | +LL | "\\.+*?()|[]{}^$#&-~".chars().any(|x| x == 'a'); + | ^^ + +error: this looks like a formatting argument but it is not part of a formatting macro + --> tests/ui/literal_string_with_formatting_arg.rs:17:18 + | +LL | x.expect("———{}"); + | ^^ + +error: aborting due to 10 previous errors + -- cgit 1.4.1-3-g733a5 From 05705b693866e4221ba9cd46f566cfa7f7f406ae Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Wed, 18 Sep 2024 23:19:31 +0200 Subject: Update new failing tests --- .../large_include_file/large_include_file.rs | 1 + .../large_include_file/large_include_file.stderr | 6 +-- tests/ui/auxiliary/proc_macro_derive.rs | 1 + tests/ui/format.fixed | 3 +- tests/ui/format.rs | 3 +- tests/ui/format.stderr | 30 +++++++------- tests/ui/print_literal.fixed | 2 +- tests/ui/print_literal.rs | 2 +- tests/ui/regex.rs | 3 +- tests/ui/regex.stderr | 48 +++++++++++----------- .../uninlined_format_args_panic.edition2018.fixed | 1 + .../uninlined_format_args_panic.edition2018.stderr | 2 +- .../uninlined_format_args_panic.edition2021.fixed | 1 + .../uninlined_format_args_panic.edition2021.stderr | 12 +++--- tests/ui/uninlined_format_args_panic.rs | 1 + 15 files changed, 62 insertions(+), 54 deletions(-) diff --git a/tests/ui-toml/large_include_file/large_include_file.rs b/tests/ui-toml/large_include_file/large_include_file.rs index 8a6dd36501c..c456b48daca 100644 --- a/tests/ui-toml/large_include_file/large_include_file.rs +++ b/tests/ui-toml/large_include_file/large_include_file.rs @@ -1,4 +1,5 @@ #![warn(clippy::large_include_file)] +#![allow(clippy::literal_string_with_formatting_arg)] // Good const GOOD_INCLUDE_BYTES: &[u8; 68] = include_bytes!("../../ui/author.rs"); diff --git a/tests/ui-toml/large_include_file/large_include_file.stderr b/tests/ui-toml/large_include_file/large_include_file.stderr index 9e1494a47bb..82b926cc53b 100644 --- a/tests/ui-toml/large_include_file/large_include_file.stderr +++ b/tests/ui-toml/large_include_file/large_include_file.stderr @@ -1,5 +1,5 @@ error: attempted to include a large file - --> tests/ui-toml/large_include_file/large_include_file.rs:13:43 + --> tests/ui-toml/large_include_file/large_include_file.rs:14:43 | LL | const TOO_BIG_INCLUDE_BYTES: &[u8; 654] = include_bytes!("too_big.txt"); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -9,7 +9,7 @@ LL | const TOO_BIG_INCLUDE_BYTES: &[u8; 654] = include_bytes!("too_big.txt"); = help: to override `-D warnings` add `#[allow(clippy::large_include_file)]` error: attempted to include a large file - --> tests/ui-toml/large_include_file/large_include_file.rs:15:35 + --> tests/ui-toml/large_include_file/large_include_file.rs:16:35 | LL | const TOO_BIG_INCLUDE_STR: &str = include_str!("too_big.txt"); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -17,7 +17,7 @@ LL | const TOO_BIG_INCLUDE_STR: &str = include_str!("too_big.txt"); = note: the configuration allows a maximum size of 600 bytes error: attempted to include a large file - --> tests/ui-toml/large_include_file/large_include_file.rs:18:1 + --> tests/ui-toml/large_include_file/large_include_file.rs:19:1 | LL | #[doc = include_str!("too_big.txt")] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/auxiliary/proc_macro_derive.rs b/tests/ui/auxiliary/proc_macro_derive.rs index fbf84337382..33fbea08003 100644 --- a/tests/ui/auxiliary/proc_macro_derive.rs +++ b/tests/ui/auxiliary/proc_macro_derive.rs @@ -2,6 +2,7 @@ #![allow(incomplete_features)] #![allow(clippy::field_reassign_with_default)] #![allow(clippy::eq_op)] +#![allow(clippy::literal_string_with_formatting_arg)] extern crate proc_macro; diff --git a/tests/ui/format.fixed b/tests/ui/format.fixed index 2b32fdeae2b..df4ac2d1a22 100644 --- a/tests/ui/format.fixed +++ b/tests/ui/format.fixed @@ -6,7 +6,8 @@ clippy::needless_borrow, clippy::uninlined_format_args, clippy::needless_raw_string_hashes, - clippy::useless_vec + clippy::useless_vec, + clippy::literal_string_with_formatting_arg )] struct Foo(pub String); diff --git a/tests/ui/format.rs b/tests/ui/format.rs index bad192067e9..30d8ff38f26 100644 --- a/tests/ui/format.rs +++ b/tests/ui/format.rs @@ -6,7 +6,8 @@ clippy::needless_borrow, clippy::uninlined_format_args, clippy::needless_raw_string_hashes, - clippy::useless_vec + clippy::useless_vec, + clippy::literal_string_with_formatting_arg )] struct Foo(pub String); diff --git a/tests/ui/format.stderr b/tests/ui/format.stderr index faa80b48000..1368c8cd77e 100644 --- a/tests/ui/format.stderr +++ b/tests/ui/format.stderr @@ -1,5 +1,5 @@ error: useless use of `format!` - --> tests/ui/format.rs:19:5 + --> tests/ui/format.rs:20:5 | LL | format!("foo"); | ^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"foo".to_string()` @@ -8,19 +8,19 @@ LL | format!("foo"); = help: to override `-D warnings` add `#[allow(clippy::useless_format)]` error: useless use of `format!` - --> tests/ui/format.rs:20:5 + --> tests/ui/format.rs:21:5 | LL | format!("{{}}"); | ^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"{}".to_string()` error: useless use of `format!` - --> tests/ui/format.rs:21:5 + --> tests/ui/format.rs:22:5 | LL | format!("{{}} abc {{}}"); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"{} abc {}".to_string()` error: useless use of `format!` - --> tests/ui/format.rs:22:5 + --> tests/ui/format.rs:23:5 | LL | / format!( LL | | r##"foo {{}} @@ -35,67 +35,67 @@ LL ~ " bar"##.to_string(); | error: useless use of `format!` - --> tests/ui/format.rs:27:13 + --> tests/ui/format.rs:28:13 | LL | let _ = format!(""); | ^^^^^^^^^^^ help: consider using `String::new()`: `String::new()` error: useless use of `format!` - --> tests/ui/format.rs:29:5 + --> tests/ui/format.rs:30:5 | LL | format!("{}", "foo"); | ^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"foo".to_string()` error: useless use of `format!` - --> tests/ui/format.rs:37:5 + --> tests/ui/format.rs:38:5 | LL | format!("{}", arg); | ^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `arg.to_string()` error: useless use of `format!` - --> tests/ui/format.rs:67:5 + --> tests/ui/format.rs:68:5 | LL | format!("{}", 42.to_string()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `42.to_string()` error: useless use of `format!` - --> tests/ui/format.rs:69:5 + --> tests/ui/format.rs:70:5 | LL | format!("{}", x.display().to_string()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `x.display().to_string()` error: useless use of `format!` - --> tests/ui/format.rs:73:18 + --> tests/ui/format.rs:74:18 | LL | let _ = Some(format!("{}", a + "bar")); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `a + "bar"` error: useless use of `format!` - --> tests/ui/format.rs:77:22 + --> tests/ui/format.rs:78:22 | LL | let _s: String = format!("{}", &*v.join("\n")); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `(&*v.join("\n")).to_string()` error: useless use of `format!` - --> tests/ui/format.rs:83:13 + --> tests/ui/format.rs:84:13 | LL | let _ = format!("{x}"); | ^^^^^^^^^^^^^^ help: consider using `.to_string()`: `x.to_string()` error: useless use of `format!` - --> tests/ui/format.rs:85:13 + --> tests/ui/format.rs:86:13 | LL | let _ = format!("{y}", y = x); | ^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `x.to_string()` error: useless use of `format!` - --> tests/ui/format.rs:89:13 + --> tests/ui/format.rs:90:13 | LL | let _ = format!("{abc}"); | ^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `abc.to_string()` error: useless use of `format!` - --> tests/ui/format.rs:91:13 + --> tests/ui/format.rs:92:13 | LL | let _ = format!("{xx}"); | ^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `xx.to_string()` diff --git a/tests/ui/print_literal.fixed b/tests/ui/print_literal.fixed index a7157c07f8a..8c0cedf6299 100644 --- a/tests/ui/print_literal.fixed +++ b/tests/ui/print_literal.fixed @@ -1,5 +1,5 @@ #![warn(clippy::print_literal)] -#![allow(clippy::uninlined_format_args)] +#![allow(clippy::uninlined_format_args, clippy::literal_string_with_formatting_arg)] fn main() { // these should be fine diff --git a/tests/ui/print_literal.rs b/tests/ui/print_literal.rs index 4b04b42744c..1df4f4181e9 100644 --- a/tests/ui/print_literal.rs +++ b/tests/ui/print_literal.rs @@ -1,5 +1,5 @@ #![warn(clippy::print_literal)] -#![allow(clippy::uninlined_format_args)] +#![allow(clippy::uninlined_format_args, clippy::literal_string_with_formatting_arg)] fn main() { // these should be fine diff --git a/tests/ui/regex.rs b/tests/ui/regex.rs index f607a2d50c6..ea5c8354928 100644 --- a/tests/ui/regex.rs +++ b/tests/ui/regex.rs @@ -3,7 +3,8 @@ clippy::needless_raw_strings, clippy::needless_raw_string_hashes, clippy::needless_borrow, - clippy::needless_borrows_for_generic_args + clippy::needless_borrows_for_generic_args, + clippy::literal_string_with_formatting_arg )] #![warn(clippy::invalid_regex, clippy::trivial_regex, clippy::regex_creation_in_loops)] diff --git a/tests/ui/regex.stderr b/tests/ui/regex.stderr index 18dd538c68b..919bac8f52f 100644 --- a/tests/ui/regex.stderr +++ b/tests/ui/regex.stderr @@ -1,5 +1,5 @@ error: trivial regex - --> tests/ui/regex.rs:19:45 + --> tests/ui/regex.rs:20:45 | LL | let pipe_in_wrong_position = Regex::new("|"); | ^^^ @@ -9,7 +9,7 @@ LL | let pipe_in_wrong_position = Regex::new("|"); = help: to override `-D warnings` add `#[allow(clippy::trivial_regex)]` error: trivial regex - --> tests/ui/regex.rs:21:60 + --> tests/ui/regex.rs:22:60 | LL | let pipe_in_wrong_position_builder = RegexBuilder::new("|"); | ^^^ @@ -17,7 +17,7 @@ LL | let pipe_in_wrong_position_builder = RegexBuilder::new("|"); = help: the regex is unlikely to be useful as it is error: regex syntax error: invalid character class range, the start must be <= the end - --> tests/ui/regex.rs:23:42 + --> tests/ui/regex.rs:24:42 | LL | let wrong_char_ranice = Regex::new("[z-a]"); | ^^^ @@ -26,7 +26,7 @@ LL | let wrong_char_ranice = Regex::new("[z-a]"); = help: to override `-D warnings` add `#[allow(clippy::invalid_regex)]` error: regex syntax error: invalid character class range, the start must be <= the end - --> tests/ui/regex.rs:26:37 + --> tests/ui/regex.rs:27:37 | LL | let some_unicode = Regex::new("[é-è]"); | ^^^ @@ -35,13 +35,13 @@ error: regex parse error: ( ^ error: unclosed group - --> tests/ui/regex.rs:29:33 + --> tests/ui/regex.rs:30:33 | LL | let some_regex = Regex::new(OPENING_PAREN); | ^^^^^^^^^^^^^ error: trivial regex - --> tests/ui/regex.rs:31:53 + --> tests/ui/regex.rs:32:53 | LL | let binary_pipe_in_wrong_position = BRegex::new("|"); | ^^^ @@ -52,7 +52,7 @@ error: regex parse error: ( ^ error: unclosed group - --> tests/ui/regex.rs:33:41 + --> tests/ui/regex.rs:34:41 | LL | let some_binary_regex = BRegex::new(OPENING_PAREN); | ^^^^^^^^^^^^^ @@ -61,7 +61,7 @@ error: regex parse error: ( ^ error: unclosed group - --> tests/ui/regex.rs:34:56 + --> tests/ui/regex.rs:35:56 | LL | let some_binary_regex_builder = BRegexBuilder::new(OPENING_PAREN); | ^^^^^^^^^^^^^ @@ -70,7 +70,7 @@ error: regex parse error: ( ^ error: unclosed group - --> tests/ui/regex.rs:46:37 + --> tests/ui/regex.rs:47:37 | LL | let set_error = RegexSet::new(&[OPENING_PAREN, r"[a-z]+\.(com|org|net)"]); | ^^^^^^^^^^^^^ @@ -79,7 +79,7 @@ error: regex parse error: ( ^ error: unclosed group - --> tests/ui/regex.rs:47:39 + --> tests/ui/regex.rs:48:39 | LL | let bset_error = BRegexSet::new(&[OPENING_PAREN, r"[a-z]+\.(com|org|net)"]); | ^^^^^^^^^^^^^ @@ -88,7 +88,7 @@ error: regex parse error: \b\c ^^ error: unrecognized escape sequence - --> tests/ui/regex.rs:54:42 + --> tests/ui/regex.rs:55:42 | LL | let escaped_string_span = Regex::new("\\b\\c"); | ^^^^^^^^ @@ -96,19 +96,19 @@ LL | let escaped_string_span = Regex::new("\\b\\c"); = help: consider using a raw string literal: `r".."` error: regex syntax error: duplicate flag - --> tests/ui/regex.rs:56:34 + --> tests/ui/regex.rs:57:34 | LL | let aux_span = Regex::new("(?ixi)"); | ^ ^ error: regex syntax error: pattern can match invalid UTF-8 - --> tests/ui/regex.rs:62:53 + --> tests/ui/regex.rs:63:53 | LL | let invalid_utf8_should_lint = Regex::new("(?-u)."); | ^ error: trivial regex - --> tests/ui/regex.rs:67:33 + --> tests/ui/regex.rs:68:33 | LL | let trivial_eq = Regex::new("^foobar$"); | ^^^^^^^^^^ @@ -116,7 +116,7 @@ LL | let trivial_eq = Regex::new("^foobar$"); = help: consider using `==` on `str`s error: trivial regex - --> tests/ui/regex.rs:70:48 + --> tests/ui/regex.rs:71:48 | LL | let trivial_eq_builder = RegexBuilder::new("^foobar$"); | ^^^^^^^^^^ @@ -124,7 +124,7 @@ LL | let trivial_eq_builder = RegexBuilder::new("^foobar$"); = help: consider using `==` on `str`s error: trivial regex - --> tests/ui/regex.rs:73:42 + --> tests/ui/regex.rs:74:42 | LL | let trivial_starts_with = Regex::new("^foobar"); | ^^^^^^^^^ @@ -132,7 +132,7 @@ LL | let trivial_starts_with = Regex::new("^foobar"); = help: consider using `str::starts_with` error: trivial regex - --> tests/ui/regex.rs:76:40 + --> tests/ui/regex.rs:77:40 | LL | let trivial_ends_with = Regex::new("foobar$"); | ^^^^^^^^^ @@ -140,7 +140,7 @@ LL | let trivial_ends_with = Regex::new("foobar$"); = help: consider using `str::ends_with` error: trivial regex - --> tests/ui/regex.rs:79:39 + --> tests/ui/regex.rs:80:39 | LL | let trivial_contains = Regex::new("foobar"); | ^^^^^^^^ @@ -148,7 +148,7 @@ LL | let trivial_contains = Regex::new("foobar"); = help: consider using `str::contains` error: trivial regex - --> tests/ui/regex.rs:82:39 + --> tests/ui/regex.rs:83:39 | LL | let trivial_contains = Regex::new(NOT_A_REAL_REGEX); | ^^^^^^^^^^^^^^^^ @@ -156,7 +156,7 @@ LL | let trivial_contains = Regex::new(NOT_A_REAL_REGEX); = help: consider using `str::contains` error: trivial regex - --> tests/ui/regex.rs:85:40 + --> tests/ui/regex.rs:86:40 | LL | let trivial_backslash = Regex::new("a\\.b"); | ^^^^^^^ @@ -164,7 +164,7 @@ LL | let trivial_backslash = Regex::new("a\\.b"); = help: consider using `str::contains` error: trivial regex - --> tests/ui/regex.rs:89:36 + --> tests/ui/regex.rs:90:36 | LL | let trivial_empty = Regex::new(""); | ^^ @@ -172,7 +172,7 @@ LL | let trivial_empty = Regex::new(""); = help: the regex is unlikely to be useful as it is error: trivial regex - --> tests/ui/regex.rs:92:36 + --> tests/ui/regex.rs:93:36 | LL | let trivial_empty = Regex::new("^"); | ^^^ @@ -180,7 +180,7 @@ LL | let trivial_empty = Regex::new("^"); = help: the regex is unlikely to be useful as it is error: trivial regex - --> tests/ui/regex.rs:95:36 + --> tests/ui/regex.rs:96:36 | LL | let trivial_empty = Regex::new("^$"); | ^^^^ @@ -188,7 +188,7 @@ LL | let trivial_empty = Regex::new("^$"); = help: consider using `str::is_empty` error: trivial regex - --> tests/ui/regex.rs:98:44 + --> tests/ui/regex.rs:99:44 | LL | let binary_trivial_empty = BRegex::new("^$"); | ^^^^ diff --git a/tests/ui/uninlined_format_args_panic.edition2018.fixed b/tests/ui/uninlined_format_args_panic.edition2018.fixed index f0d570efdce..130187d19d6 100644 --- a/tests/ui/uninlined_format_args_panic.edition2018.fixed +++ b/tests/ui/uninlined_format_args_panic.edition2018.fixed @@ -3,6 +3,7 @@ //@[edition2021] edition:2021 #![warn(clippy::uninlined_format_args)] +#![allow(clippy::literal_string_with_formatting_arg)] fn main() { let var = 1; diff --git a/tests/ui/uninlined_format_args_panic.edition2018.stderr b/tests/ui/uninlined_format_args_panic.edition2018.stderr index 0541dd9a7d7..4b154abac5b 100644 --- a/tests/ui/uninlined_format_args_panic.edition2018.stderr +++ b/tests/ui/uninlined_format_args_panic.edition2018.stderr @@ -1,5 +1,5 @@ error: variables can be used directly in the `format!` string - --> tests/ui/uninlined_format_args_panic.rs:10:5 + --> tests/ui/uninlined_format_args_panic.rs:11:5 | LL | println!("val='{}'", var); | ^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/uninlined_format_args_panic.edition2021.fixed b/tests/ui/uninlined_format_args_panic.edition2021.fixed index 7c0f28c4576..63b30c64025 100644 --- a/tests/ui/uninlined_format_args_panic.edition2021.fixed +++ b/tests/ui/uninlined_format_args_panic.edition2021.fixed @@ -3,6 +3,7 @@ //@[edition2021] edition:2021 #![warn(clippy::uninlined_format_args)] +#![allow(clippy::literal_string_with_formatting_arg)] fn main() { let var = 1; diff --git a/tests/ui/uninlined_format_args_panic.edition2021.stderr b/tests/ui/uninlined_format_args_panic.edition2021.stderr index 3615eaa9dee..7638d3f8bba 100644 --- a/tests/ui/uninlined_format_args_panic.edition2021.stderr +++ b/tests/ui/uninlined_format_args_panic.edition2021.stderr @@ -1,5 +1,5 @@ error: variables can be used directly in the `format!` string - --> tests/ui/uninlined_format_args_panic.rs:10:5 + --> tests/ui/uninlined_format_args_panic.rs:11:5 | LL | println!("val='{}'", var); | ^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -13,7 +13,7 @@ LL + println!("val='{var}'"); | error: variables can be used directly in the `format!` string - --> tests/ui/uninlined_format_args_panic.rs:13:9 + --> tests/ui/uninlined_format_args_panic.rs:14:9 | LL | panic!("p1 {}", var); | ^^^^^^^^^^^^^^^^^^^^ @@ -25,7 +25,7 @@ LL + panic!("p1 {var}"); | error: variables can be used directly in the `format!` string - --> tests/ui/uninlined_format_args_panic.rs:16:9 + --> tests/ui/uninlined_format_args_panic.rs:17:9 | LL | panic!("p2 {0}", var); | ^^^^^^^^^^^^^^^^^^^^^ @@ -37,7 +37,7 @@ LL + panic!("p2 {var}"); | error: variables can be used directly in the `format!` string - --> tests/ui/uninlined_format_args_panic.rs:19:9 + --> tests/ui/uninlined_format_args_panic.rs:20:9 | LL | panic!("p3 {var}", var = var); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -49,7 +49,7 @@ LL + panic!("p3 {var}"); | error: variables can be used directly in the `format!` string - --> tests/ui/uninlined_format_args_panic.rs:29:5 + --> tests/ui/uninlined_format_args_panic.rs:30:5 | LL | assert!(var == 1, "p5 {}", var); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -61,7 +61,7 @@ LL + assert!(var == 1, "p5 {var}"); | error: variables can be used directly in the `format!` string - --> tests/ui/uninlined_format_args_panic.rs:30:5 + --> tests/ui/uninlined_format_args_panic.rs:31:5 | LL | debug_assert!(var == 1, "p6 {}", var); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/uninlined_format_args_panic.rs b/tests/ui/uninlined_format_args_panic.rs index fa594d9a96f..9402cea878d 100644 --- a/tests/ui/uninlined_format_args_panic.rs +++ b/tests/ui/uninlined_format_args_panic.rs @@ -3,6 +3,7 @@ //@[edition2021] edition:2021 #![warn(clippy::uninlined_format_args)] +#![allow(clippy::literal_string_with_formatting_arg)] fn main() { let var = 1; -- cgit 1.4.1-3-g733a5 From 8d5a4e95e3381e9680212b145a5d5f5c16e2902e Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Thu, 19 Sep 2024 12:32:57 +0200 Subject: Allow `literal_string_with_formatting_arg` in some clippy crates --- clippy_dev/src/lib.rs | 2 +- clippy_lints/src/lib.rs | 3 ++- lintcheck/src/main.rs | 3 ++- 3 files changed, 5 insertions(+), 3 deletions(-) diff --git a/clippy_dev/src/lib.rs b/clippy_dev/src/lib.rs index ad385d5fbd2..1f4560eaecf 100644 --- a/clippy_dev/src/lib.rs +++ b/clippy_dev/src/lib.rs @@ -7,7 +7,7 @@ unused_lifetimes, unused_qualifications )] -#![allow(clippy::missing_panics_doc)] +#![allow(clippy::missing_panics_doc, clippy::literal_string_with_formatting_arg)] // The `rustc_driver` crate seems to be required in order to use the `rust_lexer` crate. #[allow(unused_extern_crates)] diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs index 44e36b99b5d..051e7653934 100644 --- a/clippy_lints/src/lib.rs +++ b/clippy_lints/src/lib.rs @@ -17,7 +17,8 @@ clippy::missing_docs_in_private_items, clippy::must_use_candidate, rustc::diagnostic_outside_of_impl, - rustc::untranslatable_diagnostic + rustc::untranslatable_diagnostic, + clippy::literal_string_with_formatting_arg )] #![warn( trivial_casts, diff --git a/lintcheck/src/main.rs b/lintcheck/src/main.rs index 8c62dd3ed38..db7710a7a38 100644 --- a/lintcheck/src/main.rs +++ b/lintcheck/src/main.rs @@ -17,7 +17,8 @@ #![allow( clippy::collapsible_else_if, clippy::needless_borrows_for_generic_args, - clippy::module_name_repetitions + clippy::module_name_repetitions, + clippy::literal_string_with_formatting_arg )] mod config; -- cgit 1.4.1-3-g733a5 From 9ea769a4795bc2b85fa22a97a9c9c2e8ce4d483d Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Thu, 19 Sep 2024 17:39:28 +0200 Subject: Disable checks on `{}` --- .../src/literal_string_with_formatting_arg.rs | 47 +++++++++++++--------- tests/ui/literal_string_with_formatting_arg.rs | 6 ++- tests/ui/literal_string_with_formatting_arg.stderr | 34 ++++++++-------- 3 files changed, 49 insertions(+), 38 deletions(-) diff --git a/clippy_lints/src/literal_string_with_formatting_arg.rs b/clippy_lints/src/literal_string_with_formatting_arg.rs index e72f0de90c6..2938ff3772f 100644 --- a/clippy_lints/src/literal_string_with_formatting_arg.rs +++ b/clippy_lints/src/literal_string_with_formatting_arg.rs @@ -70,31 +70,40 @@ impl EarlyLintPass for LiteralStringWithFormattingArg { continue; } - let mut end = fmt_str[pos.end..].find('}').map_or(pos.end, |found| found + pos.end); - if fmt_str[start..end].contains(':') { - end += 1; + if fmt_str[start + 1..].trim_start().starts_with('}') { + // For now, we ignore `{}`. + continue; } + + let end = fmt_str[start + 1..] + .find('}') + .map_or(pos.end, |found| start + 1 + found) + + 1; spans.push( expr.span - .with_hi(lo + BytePos((start + add) as _)) - .with_lo(lo + BytePos((end + add) as _)), + .with_hi(lo + BytePos((start + add).try_into().unwrap())) + .with_lo(lo + BytePos((end + add).try_into().unwrap())), ); } } - if spans.len() == 1 { - span_lint( - cx, - LITERAL_STRING_WITH_FORMATTING_ARG, - spans, - "this looks like a formatting argument but it is not part of a formatting macro", - ); - } else if spans.len() > 1 { - span_lint( - cx, - LITERAL_STRING_WITH_FORMATTING_ARG, - spans, - "these look like formatting arguments but are not part of a formatting macro", - ); + match spans.len() { + 0 => {}, + 1 => { + span_lint( + cx, + LITERAL_STRING_WITH_FORMATTING_ARG, + spans, + "this looks like a formatting argument but it is not part of a formatting macro", + ); + }, + _ => { + span_lint( + cx, + LITERAL_STRING_WITH_FORMATTING_ARG, + spans, + "these look like formatting arguments but are not part of a formatting macro", + ); + }, } } } diff --git a/tests/ui/literal_string_with_formatting_arg.rs b/tests/ui/literal_string_with_formatting_arg.rs index 539d24efe7c..d623ab524fb 100644 --- a/tests/ui/literal_string_with_formatting_arg.rs +++ b/tests/ui/literal_string_with_formatting_arg.rs @@ -5,6 +5,7 @@ fn main() { let x: Option = None; let y = "hello"; x.expect("{y} {}"); //~ literal_string_with_formatting_arg + x.expect(" {y} bla"); //~ literal_string_with_formatting_arg x.expect("{:?}"); //~ literal_string_with_formatting_arg x.expect("{y:?}"); //~ literal_string_with_formatting_arg x.expect(" {y:?} {y:?} "); //~ literal_string_with_formatting_arg @@ -12,13 +13,14 @@ fn main() { x.expect(r"{y:?} {y:?} "); //~ literal_string_with_formatting_arg x.expect(r"{y:?} y:?}"); //~ literal_string_with_formatting_arg x.expect(r##" {y:?} {y:?} "##); //~ literal_string_with_formatting_arg - "\\.+*?()|[]{}^$#&-~".chars().any(|x| x == 'a'); //~ literal_string_with_formatting_arg // Ensure that it doesn't try to go in the middle of a unicode character. - x.expect("———{}"); //~ literal_string_with_formatting_arg + x.expect("———{:?}"); //~ literal_string_with_formatting_arg // Should not lint! format!("{y:?}"); println!("{y:?}"); + x.expect(" {} "); // For now we ignore `{}` to limit false positives. + x.expect(" { } "); // For now we ignore `{}` to limit false positives. x.expect("{{y} {x"); x.expect("{{y:?}"); x.expect("{y:...}"); diff --git a/tests/ui/literal_string_with_formatting_arg.stderr b/tests/ui/literal_string_with_formatting_arg.stderr index c05d4af017c..da7eb71ac87 100644 --- a/tests/ui/literal_string_with_formatting_arg.stderr +++ b/tests/ui/literal_string_with_formatting_arg.stderr @@ -1,65 +1,65 @@ -error: these look like formatting arguments but are not part of a formatting macro +error: this looks like a formatting argument but it is not part of a formatting macro --> tests/ui/literal_string_with_formatting_arg.rs:7:15 | LL | x.expect("{y} {}"); - | ^^^^^^ + | ^^^ | = note: `-D clippy::literal-string-with-formatting-arg` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::literal_string_with_formatting_arg)]` error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:8:15 + --> tests/ui/literal_string_with_formatting_arg.rs:8:16 + | +LL | x.expect(" {y} bla"); + | ^^^ + +error: this looks like a formatting argument but it is not part of a formatting macro + --> tests/ui/literal_string_with_formatting_arg.rs:9:15 | LL | x.expect("{:?}"); | ^^^^ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:9:15 + --> tests/ui/literal_string_with_formatting_arg.rs:10:15 | LL | x.expect("{y:?}"); | ^^^^^ error: these look like formatting arguments but are not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:10:16 + --> tests/ui/literal_string_with_formatting_arg.rs:11:16 | LL | x.expect(" {y:?} {y:?} "); | ^^^^^ ^^^^^ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:11:23 + --> tests/ui/literal_string_with_formatting_arg.rs:12:23 | LL | x.expect(" {y:..} {y:?} "); | ^^^^^ error: these look like formatting arguments but are not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:12:16 + --> tests/ui/literal_string_with_formatting_arg.rs:13:16 | LL | x.expect(r"{y:?} {y:?} "); | ^^^^^ ^^^^^ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:13:16 + --> tests/ui/literal_string_with_formatting_arg.rs:14:16 | LL | x.expect(r"{y:?} y:?}"); | ^^^^^ error: these look like formatting arguments but are not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:14:19 + --> tests/ui/literal_string_with_formatting_arg.rs:15:19 | LL | x.expect(r##" {y:?} {y:?} "##); | ^^^^^ ^^^^^ -error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:15:17 - | -LL | "\\.+*?()|[]{}^$#&-~".chars().any(|x| x == 'a'); - | ^^ - error: this looks like a formatting argument but it is not part of a formatting macro --> tests/ui/literal_string_with_formatting_arg.rs:17:18 | -LL | x.expect("———{}"); - | ^^ +LL | x.expect("———{:?}"); + | ^^^^ error: aborting due to 10 previous errors -- cgit 1.4.1-3-g733a5 From b20b75a904c5fa0e461c88bab64370b1d3bf69b9 Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Thu, 19 Sep 2024 18:04:39 +0200 Subject: Don't emit if literal comes from macro expansion --- clippy_lints/src/literal_string_with_formatting_arg.rs | 3 +++ 1 file changed, 3 insertions(+) diff --git a/clippy_lints/src/literal_string_with_formatting_arg.rs b/clippy_lints/src/literal_string_with_formatting_arg.rs index 2938ff3772f..a05ca4a2681 100644 --- a/clippy_lints/src/literal_string_with_formatting_arg.rs +++ b/clippy_lints/src/literal_string_with_formatting_arg.rs @@ -37,6 +37,9 @@ declare_lint_pass!(LiteralStringWithFormattingArg => [LITERAL_STRING_WITH_FORMAT impl EarlyLintPass for LiteralStringWithFormattingArg { fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &Expr) { + if expr.span.from_expansion() { + return; + } if let ExprKind::Lit(lit) = expr.kind { let add = match lit.kind { LitKind::Str => 1, -- cgit 1.4.1-3-g733a5 From 607a3f6c08b489f9bd71ce11a00b112c3e5c612d Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Tue, 19 Nov 2024 16:01:38 +0100 Subject: Rename `literal_string_with_formatting_arg` into `literal_string_with_formatting_args` --- CHANGELOG.md | 2 +- clippy_dev/src/lib.rs | 2 +- clippy_lints/src/declared_lints.rs | 2 +- clippy_lints/src/lib.rs | 6 +- .../src/literal_string_with_formatting_arg.rs | 113 --------------------- .../src/literal_string_with_formatting_args.rs | 113 +++++++++++++++++++++ .../large_include_file/large_include_file.rs | 2 +- tests/ui/auxiliary/proc_macro_derive.rs | 2 +- tests/ui/format.fixed | 2 +- tests/ui/format.rs | 2 +- tests/ui/literal_string_with_formatting_arg.rs | 22 ++-- tests/ui/literal_string_with_formatting_arg.stderr | 22 ++-- tests/ui/print_literal.fixed | 2 +- tests/ui/print_literal.rs | 2 +- tests/ui/regex.rs | 2 +- .../uninlined_format_args_panic.edition2018.fixed | 2 +- .../uninlined_format_args_panic.edition2021.fixed | 2 +- tests/ui/uninlined_format_args_panic.rs | 2 +- 18 files changed, 151 insertions(+), 151 deletions(-) delete mode 100644 clippy_lints/src/literal_string_with_formatting_arg.rs create mode 100644 clippy_lints/src/literal_string_with_formatting_args.rs diff --git a/CHANGELOG.md b/CHANGELOG.md index 3a82bfce82b..efa6ed9f1bb 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -5639,7 +5639,7 @@ Released 2018-09-13 [`lines_filter_map_ok`]: https://rust-lang.github.io/rust-clippy/master/index.html#lines_filter_map_ok [`linkedlist`]: https://rust-lang.github.io/rust-clippy/master/index.html#linkedlist [`lint_groups_priority`]: https://rust-lang.github.io/rust-clippy/master/index.html#lint_groups_priority -[`literal_string_with_formatting_arg`]: https://rust-lang.github.io/rust-clippy/master/index.html#literal_string_with_formatting_arg +[`literal_string_with_formatting_args`]: https://rust-lang.github.io/rust-clippy/master/index.html#literal_string_with_formatting_args [`little_endian_bytes`]: https://rust-lang.github.io/rust-clippy/master/index.html#little_endian_bytes [`logic_bug`]: https://rust-lang.github.io/rust-clippy/master/index.html#logic_bug [`lossy_float_literal`]: https://rust-lang.github.io/rust-clippy/master/index.html#lossy_float_literal diff --git a/clippy_dev/src/lib.rs b/clippy_dev/src/lib.rs index 1f4560eaecf..ad385d5fbd2 100644 --- a/clippy_dev/src/lib.rs +++ b/clippy_dev/src/lib.rs @@ -7,7 +7,7 @@ unused_lifetimes, unused_qualifications )] -#![allow(clippy::missing_panics_doc, clippy::literal_string_with_formatting_arg)] +#![allow(clippy::missing_panics_doc)] // The `rustc_driver` crate seems to be required in order to use the `rust_lexer` crate. #[allow(unused_extern_crates)] diff --git a/clippy_lints/src/declared_lints.rs b/clippy_lints/src/declared_lints.rs index a3f89b3f70c..1143c7e10b2 100644 --- a/clippy_lints/src/declared_lints.rs +++ b/clippy_lints/src/declared_lints.rs @@ -276,7 +276,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::literal_representation::MISTYPED_LITERAL_SUFFIXES_INFO, crate::literal_representation::UNREADABLE_LITERAL_INFO, crate::literal_representation::UNUSUAL_BYTE_GROUPINGS_INFO, - crate::literal_string_with_formatting_arg::LITERAL_STRING_WITH_FORMATTING_ARG_INFO, + crate::literal_string_with_formatting_args::LITERAL_STRING_WITH_FORMATTING_ARGS_INFO, crate::loops::EMPTY_LOOP_INFO, crate::loops::EXPLICIT_COUNTER_LOOP_INFO, crate::loops::EXPLICIT_INTO_ITER_LOOP_INFO, diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs index 051e7653934..4f003377a5e 100644 --- a/clippy_lints/src/lib.rs +++ b/clippy_lints/src/lib.rs @@ -18,7 +18,7 @@ clippy::must_use_candidate, rustc::diagnostic_outside_of_impl, rustc::untranslatable_diagnostic, - clippy::literal_string_with_formatting_arg + clippy::literal_string_with_formatting_args )] #![warn( trivial_casts, @@ -198,7 +198,7 @@ mod let_with_type_underscore; mod lifetimes; mod lines_filter_map_ok; mod literal_representation; -mod literal_string_with_formatting_arg; +mod literal_string_with_formatting_args; mod loops; mod macro_metavars_in_unsafe; mod macro_use; @@ -962,7 +962,7 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_late_pass(move |_| Box::new(manual_div_ceil::ManualDivCeil::new(conf))); store.register_late_pass(|_| Box::new(manual_is_power_of_two::ManualIsPowerOfTwo)); store.register_late_pass(|_| Box::new(non_zero_suggestions::NonZeroSuggestions)); - store.register_early_pass(|| Box::new(literal_string_with_formatting_arg::LiteralStringWithFormattingArg)); + store.register_early_pass(|| Box::new(literal_string_with_formatting_args::LiteralStringWithFormattingArg)); store.register_late_pass(move |_| Box::new(unused_trait_names::UnusedTraitNames::new(conf))); store.register_late_pass(|_| Box::new(manual_ignore_case_cmp::ManualIgnoreCaseCmp)); store.register_late_pass(|_| Box::new(unnecessary_literal_bound::UnnecessaryLiteralBound)); diff --git a/clippy_lints/src/literal_string_with_formatting_arg.rs b/clippy_lints/src/literal_string_with_formatting_arg.rs deleted file mode 100644 index a05ca4a2681..00000000000 --- a/clippy_lints/src/literal_string_with_formatting_arg.rs +++ /dev/null @@ -1,113 +0,0 @@ -use rustc_ast::ast::{Expr, ExprKind}; -use rustc_ast::token::LitKind; -use rustc_lint::{EarlyContext, EarlyLintPass}; -use rustc_parse_format::{ParseMode, Parser, Piece}; -use rustc_session::declare_lint_pass; -use rustc_span::BytePos; - -use clippy_utils::diagnostics::span_lint; - -declare_clippy_lint! { - /// ### What it does - /// Checks if string literals have formatting arguments outside of macros - /// using them (like `format!`). - /// - /// ### Why is this bad? - /// It will likely not generate the expected content. - /// - /// ### Example - /// ```no_run - /// let x: Option = None; - /// let y = "hello"; - /// x.expect("{y:?}"); - /// ``` - /// Use instead: - /// ```no_run - /// let x: Option = None; - /// let y = "hello"; - /// x.expect(&format!("{y:?}")); - /// ``` - #[clippy::version = "1.83.0"] - pub LITERAL_STRING_WITH_FORMATTING_ARG, - suspicious, - "Checks if string literals have formatting arguments" -} - -declare_lint_pass!(LiteralStringWithFormattingArg => [LITERAL_STRING_WITH_FORMATTING_ARG]); - -impl EarlyLintPass for LiteralStringWithFormattingArg { - fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &Expr) { - if expr.span.from_expansion() { - return; - } - if let ExprKind::Lit(lit) = expr.kind { - let add = match lit.kind { - LitKind::Str => 1, - LitKind::StrRaw(nb) => nb as usize + 2, - _ => return, - }; - let fmt_str = lit.symbol.as_str(); - let lo = expr.span.lo(); - let mut current = fmt_str; - let mut diff_len = 0; - - let mut parser = Parser::new(current, None, None, false, ParseMode::Format); - let mut spans = Vec::new(); - while let Some(piece) = parser.next() { - if let Some(error) = parser.errors.last() { - // We simply ignore the errors and move after them. - if error.span.end >= current.len() { - break; - } - current = ¤t[error.span.end + 1..]; - diff_len = fmt_str.len() - current.len(); - parser = Parser::new(current, None, None, false, ParseMode::Format); - } else if let Piece::NextArgument(arg) = piece { - let mut pos = arg.position_span; - pos.start += diff_len; - pos.end += diff_len; - - let start = fmt_str[..pos.start].rfind('{').unwrap_or(pos.start); - // If this is a unicode character escape, we don't want to lint. - if start > 1 && fmt_str[..start].ends_with("\\u") { - continue; - } - - if fmt_str[start + 1..].trim_start().starts_with('}') { - // For now, we ignore `{}`. - continue; - } - - let end = fmt_str[start + 1..] - .find('}') - .map_or(pos.end, |found| start + 1 + found) - + 1; - spans.push( - expr.span - .with_hi(lo + BytePos((start + add).try_into().unwrap())) - .with_lo(lo + BytePos((end + add).try_into().unwrap())), - ); - } - } - match spans.len() { - 0 => {}, - 1 => { - span_lint( - cx, - LITERAL_STRING_WITH_FORMATTING_ARG, - spans, - "this looks like a formatting argument but it is not part of a formatting macro", - ); - }, - _ => { - span_lint( - cx, - LITERAL_STRING_WITH_FORMATTING_ARG, - spans, - "these look like formatting arguments but are not part of a formatting macro", - ); - }, - } - } - } -} diff --git a/clippy_lints/src/literal_string_with_formatting_args.rs b/clippy_lints/src/literal_string_with_formatting_args.rs new file mode 100644 index 00000000000..6514a72a44d --- /dev/null +++ b/clippy_lints/src/literal_string_with_formatting_args.rs @@ -0,0 +1,113 @@ +use rustc_ast::ast::{Expr, ExprKind}; +use rustc_ast::token::LitKind; +use rustc_lint::{EarlyContext, EarlyLintPass}; +use rustc_parse_format::{ParseMode, Parser, Piece}; +use rustc_session::declare_lint_pass; +use rustc_span::BytePos; + +use clippy_utils::diagnostics::span_lint; + +declare_clippy_lint! { + /// ### What it does + /// Checks if string literals have formatting arguments outside of macros + /// using them (like `format!`). + /// + /// ### Why is this bad? + /// It will likely not generate the expected content. + /// + /// ### Example + /// ```no_run + /// let x: Option = None; + /// let y = "hello"; + /// x.expect("{y:?}"); + /// ``` + /// Use instead: + /// ```no_run + /// let x: Option = None; + /// let y = "hello"; + /// x.expect(&format!("{y:?}")); + /// ``` + #[clippy::version = "1.83.0"] + pub LITERAL_STRING_WITH_FORMATTING_ARGS, + suspicious, + "Checks if string literals have formatting arguments" +} + +declare_lint_pass!(LiteralStringWithFormattingArg => [LITERAL_STRING_WITH_FORMATTING_ARGS]); + +impl EarlyLintPass for LiteralStringWithFormattingArg { + fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &Expr) { + if expr.span.from_expansion() { + return; + } + if let ExprKind::Lit(lit) = expr.kind { + let add = match lit.kind { + LitKind::Str => 1, + LitKind::StrRaw(nb) => nb as usize + 2, + _ => return, + }; + let fmt_str = lit.symbol.as_str(); + let lo = expr.span.lo(); + let mut current = fmt_str; + let mut diff_len = 0; + + let mut parser = Parser::new(current, None, None, false, ParseMode::Format); + let mut spans = Vec::new(); + while let Some(piece) = parser.next() { + if let Some(error) = parser.errors.last() { + // We simply ignore the errors and move after them. + if error.span.end >= current.len() { + break; + } + current = ¤t[error.span.end + 1..]; + diff_len = fmt_str.len() - current.len(); + parser = Parser::new(current, None, None, false, ParseMode::Format); + } else if let Piece::NextArgument(arg) = piece { + let mut pos = arg.position_span; + pos.start += diff_len; + pos.end += diff_len; + + let start = fmt_str[..pos.start].rfind('{').unwrap_or(pos.start); + // If this is a unicode character escape, we don't want to lint. + if start > 1 && fmt_str[..start].ends_with("\\u") { + continue; + } + + if fmt_str[start + 1..].trim_start().starts_with('}') { + // For now, we ignore `{}`. + continue; + } + + let end = fmt_str[start + 1..] + .find('}') + .map_or(pos.end, |found| start + 1 + found) + + 1; + spans.push( + expr.span + .with_hi(lo + BytePos((start + add).try_into().unwrap())) + .with_lo(lo + BytePos((end + add).try_into().unwrap())), + ); + } + } + match spans.len() { + 0 => {}, + 1 => { + span_lint( + cx, + LITERAL_STRING_WITH_FORMATTING_ARGS, + spans, + "this looks like a formatting argument but it is not part of a formatting macro", + ); + }, + _ => { + span_lint( + cx, + LITERAL_STRING_WITH_FORMATTING_ARGS, + spans, + "these look like formatting arguments but are not part of a formatting macro", + ); + }, + } + } + } +} diff --git a/tests/ui-toml/large_include_file/large_include_file.rs b/tests/ui-toml/large_include_file/large_include_file.rs index c456b48daca..184c6d17ba4 100644 --- a/tests/ui-toml/large_include_file/large_include_file.rs +++ b/tests/ui-toml/large_include_file/large_include_file.rs @@ -1,5 +1,5 @@ #![warn(clippy::large_include_file)] -#![allow(clippy::literal_string_with_formatting_arg)] +#![allow(clippy::literal_string_with_formatting_args)] // Good const GOOD_INCLUDE_BYTES: &[u8; 68] = include_bytes!("../../ui/author.rs"); diff --git a/tests/ui/auxiliary/proc_macro_derive.rs b/tests/ui/auxiliary/proc_macro_derive.rs index 33fbea08003..1815dd58f51 100644 --- a/tests/ui/auxiliary/proc_macro_derive.rs +++ b/tests/ui/auxiliary/proc_macro_derive.rs @@ -2,7 +2,7 @@ #![allow(incomplete_features)] #![allow(clippy::field_reassign_with_default)] #![allow(clippy::eq_op)] -#![allow(clippy::literal_string_with_formatting_arg)] +#![allow(clippy::literal_string_with_formatting_args)] extern crate proc_macro; diff --git a/tests/ui/format.fixed b/tests/ui/format.fixed index df4ac2d1a22..3dc8eb79ba2 100644 --- a/tests/ui/format.fixed +++ b/tests/ui/format.fixed @@ -7,7 +7,7 @@ clippy::uninlined_format_args, clippy::needless_raw_string_hashes, clippy::useless_vec, - clippy::literal_string_with_formatting_arg + clippy::literal_string_with_formatting_args )] struct Foo(pub String); diff --git a/tests/ui/format.rs b/tests/ui/format.rs index 30d8ff38f26..eaf33c2a6c9 100644 --- a/tests/ui/format.rs +++ b/tests/ui/format.rs @@ -7,7 +7,7 @@ clippy::uninlined_format_args, clippy::needless_raw_string_hashes, clippy::useless_vec, - clippy::literal_string_with_formatting_arg + clippy::literal_string_with_formatting_args )] struct Foo(pub String); diff --git a/tests/ui/literal_string_with_formatting_arg.rs b/tests/ui/literal_string_with_formatting_arg.rs index d623ab524fb..fdb8ba60621 100644 --- a/tests/ui/literal_string_with_formatting_arg.rs +++ b/tests/ui/literal_string_with_formatting_arg.rs @@ -1,20 +1,20 @@ -#![warn(clippy::literal_string_with_formatting_arg)] +#![warn(clippy::literal_string_with_formatting_args)] #![allow(clippy::unnecessary_literal_unwrap)] fn main() { let x: Option = None; let y = "hello"; - x.expect("{y} {}"); //~ literal_string_with_formatting_arg - x.expect(" {y} bla"); //~ literal_string_with_formatting_arg - x.expect("{:?}"); //~ literal_string_with_formatting_arg - x.expect("{y:?}"); //~ literal_string_with_formatting_arg - x.expect(" {y:?} {y:?} "); //~ literal_string_with_formatting_arg - x.expect(" {y:..} {y:?} "); //~ literal_string_with_formatting_arg - x.expect(r"{y:?} {y:?} "); //~ literal_string_with_formatting_arg - x.expect(r"{y:?} y:?}"); //~ literal_string_with_formatting_arg - x.expect(r##" {y:?} {y:?} "##); //~ literal_string_with_formatting_arg + x.expect("{y} {}"); //~ literal_string_with_formatting_args + x.expect(" {y} bla"); //~ literal_string_with_formatting_args + x.expect("{:?}"); //~ literal_string_with_formatting_args + x.expect("{y:?}"); //~ literal_string_with_formatting_args + x.expect(" {y:?} {y:?} "); //~ literal_string_with_formatting_args + x.expect(" {y:..} {y:?} "); //~ literal_string_with_formatting_args + x.expect(r"{y:?} {y:?} "); //~ literal_string_with_formatting_args + x.expect(r"{y:?} y:?}"); //~ literal_string_with_formatting_args + x.expect(r##" {y:?} {y:?} "##); //~ literal_string_with_formatting_args // Ensure that it doesn't try to go in the middle of a unicode character. - x.expect("———{:?}"); //~ literal_string_with_formatting_arg + x.expect("———{:?}"); //~ literal_string_with_formatting_args // Should not lint! format!("{y:?}"); diff --git a/tests/ui/literal_string_with_formatting_arg.stderr b/tests/ui/literal_string_with_formatting_arg.stderr index da7eb71ac87..515ae978f7a 100644 --- a/tests/ui/literal_string_with_formatting_arg.stderr +++ b/tests/ui/literal_string_with_formatting_arg.stderr @@ -1,62 +1,62 @@ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:7:15 + --> tests/ui/literal_string_with_formatting_args.rs:7:15 | LL | x.expect("{y} {}"); | ^^^ | = note: `-D clippy::literal-string-with-formatting-arg` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::literal_string_with_formatting_arg)]` + = help: to override `-D warnings` add `#[allow(clippy::literal_string_with_formatting_args)]` error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:8:16 + --> tests/ui/literal_string_with_formatting_args.rs:8:16 | LL | x.expect(" {y} bla"); | ^^^ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:9:15 + --> tests/ui/literal_string_with_formatting_args.rs:9:15 | LL | x.expect("{:?}"); | ^^^^ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:10:15 + --> tests/ui/literal_string_with_formatting_args.rs:10:15 | LL | x.expect("{y:?}"); | ^^^^^ error: these look like formatting arguments but are not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:11:16 + --> tests/ui/literal_string_with_formatting_args.rs:11:16 | LL | x.expect(" {y:?} {y:?} "); | ^^^^^ ^^^^^ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:12:23 + --> tests/ui/literal_string_with_formatting_args.rs:12:23 | LL | x.expect(" {y:..} {y:?} "); | ^^^^^ error: these look like formatting arguments but are not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:13:16 + --> tests/ui/literal_string_with_formatting_args.rs:13:16 | LL | x.expect(r"{y:?} {y:?} "); | ^^^^^ ^^^^^ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:14:16 + --> tests/ui/literal_string_with_formatting_args.rs:14:16 | LL | x.expect(r"{y:?} y:?}"); | ^^^^^ error: these look like formatting arguments but are not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:15:19 + --> tests/ui/literal_string_with_formatting_args.rs:15:19 | LL | x.expect(r##" {y:?} {y:?} "##); | ^^^^^ ^^^^^ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_arg.rs:17:18 + --> tests/ui/literal_string_with_formatting_args.rs:17:18 | LL | x.expect("———{:?}"); | ^^^^ diff --git a/tests/ui/print_literal.fixed b/tests/ui/print_literal.fixed index 8c0cedf6299..1705a7ff01b 100644 --- a/tests/ui/print_literal.fixed +++ b/tests/ui/print_literal.fixed @@ -1,5 +1,5 @@ #![warn(clippy::print_literal)] -#![allow(clippy::uninlined_format_args, clippy::literal_string_with_formatting_arg)] +#![allow(clippy::uninlined_format_args, clippy::literal_string_with_formatting_args)] fn main() { // these should be fine diff --git a/tests/ui/print_literal.rs b/tests/ui/print_literal.rs index 1df4f4181e9..d10b26b5887 100644 --- a/tests/ui/print_literal.rs +++ b/tests/ui/print_literal.rs @@ -1,5 +1,5 @@ #![warn(clippy::print_literal)] -#![allow(clippy::uninlined_format_args, clippy::literal_string_with_formatting_arg)] +#![allow(clippy::uninlined_format_args, clippy::literal_string_with_formatting_args)] fn main() { // these should be fine diff --git a/tests/ui/regex.rs b/tests/ui/regex.rs index ea5c8354928..adead5ef33c 100644 --- a/tests/ui/regex.rs +++ b/tests/ui/regex.rs @@ -4,7 +4,7 @@ clippy::needless_raw_string_hashes, clippy::needless_borrow, clippy::needless_borrows_for_generic_args, - clippy::literal_string_with_formatting_arg + clippy::literal_string_with_formatting_args )] #![warn(clippy::invalid_regex, clippy::trivial_regex, clippy::regex_creation_in_loops)] diff --git a/tests/ui/uninlined_format_args_panic.edition2018.fixed b/tests/ui/uninlined_format_args_panic.edition2018.fixed index 130187d19d6..9911d131707 100644 --- a/tests/ui/uninlined_format_args_panic.edition2018.fixed +++ b/tests/ui/uninlined_format_args_panic.edition2018.fixed @@ -3,7 +3,7 @@ //@[edition2021] edition:2021 #![warn(clippy::uninlined_format_args)] -#![allow(clippy::literal_string_with_formatting_arg)] +#![allow(clippy::literal_string_with_formatting_args)] fn main() { let var = 1; diff --git a/tests/ui/uninlined_format_args_panic.edition2021.fixed b/tests/ui/uninlined_format_args_panic.edition2021.fixed index 63b30c64025..87b74670565 100644 --- a/tests/ui/uninlined_format_args_panic.edition2021.fixed +++ b/tests/ui/uninlined_format_args_panic.edition2021.fixed @@ -3,7 +3,7 @@ //@[edition2021] edition:2021 #![warn(clippy::uninlined_format_args)] -#![allow(clippy::literal_string_with_formatting_arg)] +#![allow(clippy::literal_string_with_formatting_args)] fn main() { let var = 1; diff --git a/tests/ui/uninlined_format_args_panic.rs b/tests/ui/uninlined_format_args_panic.rs index 9402cea878d..647c69bc5c4 100644 --- a/tests/ui/uninlined_format_args_panic.rs +++ b/tests/ui/uninlined_format_args_panic.rs @@ -3,7 +3,7 @@ //@[edition2021] edition:2021 #![warn(clippy::uninlined_format_args)] -#![allow(clippy::literal_string_with_formatting_arg)] +#![allow(clippy::literal_string_with_formatting_args)] fn main() { let var = 1; -- cgit 1.4.1-3-g733a5 From cfc6444f84fb80f4cb44be0116d35976c142aeb2 Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Tue, 19 Nov 2024 18:25:12 +0100 Subject: Limit `literal_string_with_formatting_args` to known variables if no formatting argument is passed --- clippy_lints/src/lib.rs | 2 +- .../src/literal_string_with_formatting_args.rs | 110 +++++++++++++++------ lintcheck/src/main.rs | 2 +- tests/ui/literal_string_with_formatting_arg.rs | 6 +- tests/ui/literal_string_with_formatting_arg.stderr | 30 +++--- tests/ui/regex.rs | 3 +- tests/ui/regex.stderr | 48 ++++----- 7 files changed, 127 insertions(+), 74 deletions(-) diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs index 4f003377a5e..017e6e2a142 100644 --- a/clippy_lints/src/lib.rs +++ b/clippy_lints/src/lib.rs @@ -962,7 +962,7 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_late_pass(move |_| Box::new(manual_div_ceil::ManualDivCeil::new(conf))); store.register_late_pass(|_| Box::new(manual_is_power_of_two::ManualIsPowerOfTwo)); store.register_late_pass(|_| Box::new(non_zero_suggestions::NonZeroSuggestions)); - store.register_early_pass(|| Box::new(literal_string_with_formatting_args::LiteralStringWithFormattingArg)); + store.register_late_pass(|_| Box::new(literal_string_with_formatting_args::LiteralStringWithFormattingArg)); store.register_late_pass(move |_| Box::new(unused_trait_names::UnusedTraitNames::new(conf))); store.register_late_pass(|_| Box::new(manual_ignore_case_cmp::ManualIgnoreCaseCmp)); store.register_late_pass(|_| Box::new(unnecessary_literal_bound::UnnecessaryLiteralBound)); diff --git a/clippy_lints/src/literal_string_with_formatting_args.rs b/clippy_lints/src/literal_string_with_formatting_args.rs index 6514a72a44d..378be37fbac 100644 --- a/clippy_lints/src/literal_string_with_formatting_args.rs +++ b/clippy_lints/src/literal_string_with_formatting_args.rs @@ -1,11 +1,13 @@ -use rustc_ast::ast::{Expr, ExprKind}; -use rustc_ast::token::LitKind; -use rustc_lint::{EarlyContext, EarlyLintPass}; +use rustc_ast::{LitKind, StrStyle}; +use rustc_hir::{Expr, ExprKind}; +use rustc_lexer::is_ident; +use rustc_lint::{LateContext, LateLintPass}; use rustc_parse_format::{ParseMode, Parser, Piece}; use rustc_session::declare_lint_pass; -use rustc_span::BytePos; +use rustc_span::{BytePos, Span}; use clippy_utils::diagnostics::span_lint; +use clippy_utils::mir::enclosing_mir; declare_clippy_lint! { /// ### What it does @@ -35,18 +37,65 @@ declare_clippy_lint! { declare_lint_pass!(LiteralStringWithFormattingArg => [LITERAL_STRING_WITH_FORMATTING_ARGS]); -impl EarlyLintPass for LiteralStringWithFormattingArg { - fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &Expr) { +fn emit_lint(cx: &LateContext<'_>, expr: &Expr<'_>, spans: &[(Span, Option)]) { + if !spans.is_empty() + && let Some(mir) = enclosing_mir(cx.tcx, expr.hir_id) + { + let spans = spans + .iter() + .filter_map(|(span, name)| { + if let Some(name) = name { + // We need to check that the name is a local. + if !mir + .var_debug_info + .iter() + .any(|local| !local.source_info.span.from_expansion() && local.name.as_str() == name) + { + return None; + } + } + Some(*span) + }) + .collect::>(); + match spans.len() { + 0 => {}, + 1 => { + span_lint( + cx, + LITERAL_STRING_WITH_FORMATTING_ARGS, + spans, + "this looks like a formatting argument but it is not part of a formatting macro", + ); + }, + _ => { + span_lint( + cx, + LITERAL_STRING_WITH_FORMATTING_ARGS, + spans, + "these look like formatting arguments but are not part of a formatting macro", + ); + }, + } + } +} + +impl LateLintPass<'_> for LiteralStringWithFormattingArg { + fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) { if expr.span.from_expansion() { return; } if let ExprKind::Lit(lit) = expr.kind { - let add = match lit.kind { - LitKind::Str => 1, - LitKind::StrRaw(nb) => nb as usize + 2, + let (add, symbol) = match lit.node { + LitKind::Str(symbol, style) => { + let add = match style { + StrStyle::Cooked => 1, + StrStyle::Raw(nb) => nb as usize + 2, + }; + (add, symbol) + }, _ => return, }; - let fmt_str = lit.symbol.as_str(); + let fmt_str = symbol.as_str(); let lo = expr.span.lo(); let mut current = fmt_str; let mut diff_len = 0; @@ -74,7 +123,7 @@ impl EarlyLintPass for LiteralStringWithFormattingArg { } if fmt_str[start + 1..].trim_start().starts_with('}') { - // For now, we ignore `{}`. + // We ignore `{}`. continue; } @@ -82,32 +131,29 @@ impl EarlyLintPass for LiteralStringWithFormattingArg { .find('}') .map_or(pos.end, |found| start + 1 + found) + 1; - spans.push( + let ident_start = start + 1; + let colon_pos = fmt_str[ident_start..end].find(':'); + let ident_end = colon_pos.unwrap_or(end - 1); + let mut name = None; + if ident_start < ident_end + && let arg = &fmt_str[ident_start..ident_end] + && !arg.is_empty() + && is_ident(arg) + { + name = Some(arg.to_string()); + } else if colon_pos.is_none() { + // Not a `{:?}`. + continue; + } + spans.push(( expr.span .with_hi(lo + BytePos((start + add).try_into().unwrap())) .with_lo(lo + BytePos((end + add).try_into().unwrap())), - ); + name, + )); } } - match spans.len() { - 0 => {}, - 1 => { - span_lint( - cx, - LITERAL_STRING_WITH_FORMATTING_ARGS, - spans, - "this looks like a formatting argument but it is not part of a formatting macro", - ); - }, - _ => { - span_lint( - cx, - LITERAL_STRING_WITH_FORMATTING_ARGS, - spans, - "these look like formatting arguments but are not part of a formatting macro", - ); - }, - } + emit_lint(cx, expr, &spans); } } } diff --git a/lintcheck/src/main.rs b/lintcheck/src/main.rs index db7710a7a38..03e2a24f6f9 100644 --- a/lintcheck/src/main.rs +++ b/lintcheck/src/main.rs @@ -18,7 +18,7 @@ clippy::collapsible_else_if, clippy::needless_borrows_for_generic_args, clippy::module_name_repetitions, - clippy::literal_string_with_formatting_arg + clippy::literal_string_with_formatting_args )] mod config; diff --git a/tests/ui/literal_string_with_formatting_arg.rs b/tests/ui/literal_string_with_formatting_arg.rs index fdb8ba60621..20bd243aa30 100644 --- a/tests/ui/literal_string_with_formatting_arg.rs +++ b/tests/ui/literal_string_with_formatting_arg.rs @@ -19,10 +19,12 @@ fn main() { // Should not lint! format!("{y:?}"); println!("{y:?}"); - x.expect(" {} "); // For now we ignore `{}` to limit false positives. - x.expect(" { } "); // For now we ignore `{}` to limit false positives. + x.expect(" {} "); // We ignore `{}` to limit false positives. + x.expect(" { } "); // We ignore `{}` to limit false positives. x.expect("{{y} {x"); x.expect("{{y:?}"); + x.expect(" {0}"); // If it only contains an integer, we ignore it. + x.expect(r##" {x:?} "##); // `x` doesn't exist so we shoud not lint x.expect("{y:...}"); let _ = "fn main {\n\ }"; diff --git a/tests/ui/literal_string_with_formatting_arg.stderr b/tests/ui/literal_string_with_formatting_arg.stderr index 515ae978f7a..32a84f600da 100644 --- a/tests/ui/literal_string_with_formatting_arg.stderr +++ b/tests/ui/literal_string_with_formatting_arg.stderr @@ -1,65 +1,71 @@ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_args.rs:7:15 + --> tests/ui/literal_string_with_formatting_arg.rs:7:15 | LL | x.expect("{y} {}"); | ^^^ | - = note: `-D clippy::literal-string-with-formatting-arg` implied by `-D warnings` + = note: `-D clippy::literal-string-with-formatting-args` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::literal_string_with_formatting_args)]` error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_args.rs:8:16 + --> tests/ui/literal_string_with_formatting_arg.rs:8:16 | LL | x.expect(" {y} bla"); | ^^^ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_args.rs:9:15 + --> tests/ui/literal_string_with_formatting_arg.rs:9:15 | LL | x.expect("{:?}"); | ^^^^ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_args.rs:10:15 + --> tests/ui/literal_string_with_formatting_arg.rs:10:15 | LL | x.expect("{y:?}"); | ^^^^^ error: these look like formatting arguments but are not part of a formatting macro - --> tests/ui/literal_string_with_formatting_args.rs:11:16 + --> tests/ui/literal_string_with_formatting_arg.rs:11:16 | LL | x.expect(" {y:?} {y:?} "); | ^^^^^ ^^^^^ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_args.rs:12:23 + --> tests/ui/literal_string_with_formatting_arg.rs:12:23 | LL | x.expect(" {y:..} {y:?} "); | ^^^^^ error: these look like formatting arguments but are not part of a formatting macro - --> tests/ui/literal_string_with_formatting_args.rs:13:16 + --> tests/ui/literal_string_with_formatting_arg.rs:13:16 | LL | x.expect(r"{y:?} {y:?} "); | ^^^^^ ^^^^^ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_args.rs:14:16 + --> tests/ui/literal_string_with_formatting_arg.rs:14:16 | LL | x.expect(r"{y:?} y:?}"); | ^^^^^ error: these look like formatting arguments but are not part of a formatting macro - --> tests/ui/literal_string_with_formatting_args.rs:15:19 + --> tests/ui/literal_string_with_formatting_arg.rs:15:19 | LL | x.expect(r##" {y:?} {y:?} "##); | ^^^^^ ^^^^^ error: this looks like a formatting argument but it is not part of a formatting macro - --> tests/ui/literal_string_with_formatting_args.rs:17:18 + --> tests/ui/literal_string_with_formatting_arg.rs:17:18 | LL | x.expect("———{:?}"); | ^^^^ -error: aborting due to 10 previous errors +error: this looks like a formatting argument but it is not part of a formatting macro + --> tests/ui/literal_string_with_formatting_arg.rs:27:19 + | +LL | x.expect(r##" {x:?} "##); // `x` doesn't exist so we shoud not lint + | ^^^^^ + +error: aborting due to 11 previous errors diff --git a/tests/ui/regex.rs b/tests/ui/regex.rs index adead5ef33c..f607a2d50c6 100644 --- a/tests/ui/regex.rs +++ b/tests/ui/regex.rs @@ -3,8 +3,7 @@ clippy::needless_raw_strings, clippy::needless_raw_string_hashes, clippy::needless_borrow, - clippy::needless_borrows_for_generic_args, - clippy::literal_string_with_formatting_args + clippy::needless_borrows_for_generic_args )] #![warn(clippy::invalid_regex, clippy::trivial_regex, clippy::regex_creation_in_loops)] diff --git a/tests/ui/regex.stderr b/tests/ui/regex.stderr index 919bac8f52f..18dd538c68b 100644 --- a/tests/ui/regex.stderr +++ b/tests/ui/regex.stderr @@ -1,5 +1,5 @@ error: trivial regex - --> tests/ui/regex.rs:20:45 + --> tests/ui/regex.rs:19:45 | LL | let pipe_in_wrong_position = Regex::new("|"); | ^^^ @@ -9,7 +9,7 @@ LL | let pipe_in_wrong_position = Regex::new("|"); = help: to override `-D warnings` add `#[allow(clippy::trivial_regex)]` error: trivial regex - --> tests/ui/regex.rs:22:60 + --> tests/ui/regex.rs:21:60 | LL | let pipe_in_wrong_position_builder = RegexBuilder::new("|"); | ^^^ @@ -17,7 +17,7 @@ LL | let pipe_in_wrong_position_builder = RegexBuilder::new("|"); = help: the regex is unlikely to be useful as it is error: regex syntax error: invalid character class range, the start must be <= the end - --> tests/ui/regex.rs:24:42 + --> tests/ui/regex.rs:23:42 | LL | let wrong_char_ranice = Regex::new("[z-a]"); | ^^^ @@ -26,7 +26,7 @@ LL | let wrong_char_ranice = Regex::new("[z-a]"); = help: to override `-D warnings` add `#[allow(clippy::invalid_regex)]` error: regex syntax error: invalid character class range, the start must be <= the end - --> tests/ui/regex.rs:27:37 + --> tests/ui/regex.rs:26:37 | LL | let some_unicode = Regex::new("[é-è]"); | ^^^ @@ -35,13 +35,13 @@ error: regex parse error: ( ^ error: unclosed group - --> tests/ui/regex.rs:30:33 + --> tests/ui/regex.rs:29:33 | LL | let some_regex = Regex::new(OPENING_PAREN); | ^^^^^^^^^^^^^ error: trivial regex - --> tests/ui/regex.rs:32:53 + --> tests/ui/regex.rs:31:53 | LL | let binary_pipe_in_wrong_position = BRegex::new("|"); | ^^^ @@ -52,7 +52,7 @@ error: regex parse error: ( ^ error: unclosed group - --> tests/ui/regex.rs:34:41 + --> tests/ui/regex.rs:33:41 | LL | let some_binary_regex = BRegex::new(OPENING_PAREN); | ^^^^^^^^^^^^^ @@ -61,7 +61,7 @@ error: regex parse error: ( ^ error: unclosed group - --> tests/ui/regex.rs:35:56 + --> tests/ui/regex.rs:34:56 | LL | let some_binary_regex_builder = BRegexBuilder::new(OPENING_PAREN); | ^^^^^^^^^^^^^ @@ -70,7 +70,7 @@ error: regex parse error: ( ^ error: unclosed group - --> tests/ui/regex.rs:47:37 + --> tests/ui/regex.rs:46:37 | LL | let set_error = RegexSet::new(&[OPENING_PAREN, r"[a-z]+\.(com|org|net)"]); | ^^^^^^^^^^^^^ @@ -79,7 +79,7 @@ error: regex parse error: ( ^ error: unclosed group - --> tests/ui/regex.rs:48:39 + --> tests/ui/regex.rs:47:39 | LL | let bset_error = BRegexSet::new(&[OPENING_PAREN, r"[a-z]+\.(com|org|net)"]); | ^^^^^^^^^^^^^ @@ -88,7 +88,7 @@ error: regex parse error: \b\c ^^ error: unrecognized escape sequence - --> tests/ui/regex.rs:55:42 + --> tests/ui/regex.rs:54:42 | LL | let escaped_string_span = Regex::new("\\b\\c"); | ^^^^^^^^ @@ -96,19 +96,19 @@ LL | let escaped_string_span = Regex::new("\\b\\c"); = help: consider using a raw string literal: `r".."` error: regex syntax error: duplicate flag - --> tests/ui/regex.rs:57:34 + --> tests/ui/regex.rs:56:34 | LL | let aux_span = Regex::new("(?ixi)"); | ^ ^ error: regex syntax error: pattern can match invalid UTF-8 - --> tests/ui/regex.rs:63:53 + --> tests/ui/regex.rs:62:53 | LL | let invalid_utf8_should_lint = Regex::new("(?-u)."); | ^ error: trivial regex - --> tests/ui/regex.rs:68:33 + --> tests/ui/regex.rs:67:33 | LL | let trivial_eq = Regex::new("^foobar$"); | ^^^^^^^^^^ @@ -116,7 +116,7 @@ LL | let trivial_eq = Regex::new("^foobar$"); = help: consider using `==` on `str`s error: trivial regex - --> tests/ui/regex.rs:71:48 + --> tests/ui/regex.rs:70:48 | LL | let trivial_eq_builder = RegexBuilder::new("^foobar$"); | ^^^^^^^^^^ @@ -124,7 +124,7 @@ LL | let trivial_eq_builder = RegexBuilder::new("^foobar$"); = help: consider using `==` on `str`s error: trivial regex - --> tests/ui/regex.rs:74:42 + --> tests/ui/regex.rs:73:42 | LL | let trivial_starts_with = Regex::new("^foobar"); | ^^^^^^^^^ @@ -132,7 +132,7 @@ LL | let trivial_starts_with = Regex::new("^foobar"); = help: consider using `str::starts_with` error: trivial regex - --> tests/ui/regex.rs:77:40 + --> tests/ui/regex.rs:76:40 | LL | let trivial_ends_with = Regex::new("foobar$"); | ^^^^^^^^^ @@ -140,7 +140,7 @@ LL | let trivial_ends_with = Regex::new("foobar$"); = help: consider using `str::ends_with` error: trivial regex - --> tests/ui/regex.rs:80:39 + --> tests/ui/regex.rs:79:39 | LL | let trivial_contains = Regex::new("foobar"); | ^^^^^^^^ @@ -148,7 +148,7 @@ LL | let trivial_contains = Regex::new("foobar"); = help: consider using `str::contains` error: trivial regex - --> tests/ui/regex.rs:83:39 + --> tests/ui/regex.rs:82:39 | LL | let trivial_contains = Regex::new(NOT_A_REAL_REGEX); | ^^^^^^^^^^^^^^^^ @@ -156,7 +156,7 @@ LL | let trivial_contains = Regex::new(NOT_A_REAL_REGEX); = help: consider using `str::contains` error: trivial regex - --> tests/ui/regex.rs:86:40 + --> tests/ui/regex.rs:85:40 | LL | let trivial_backslash = Regex::new("a\\.b"); | ^^^^^^^ @@ -164,7 +164,7 @@ LL | let trivial_backslash = Regex::new("a\\.b"); = help: consider using `str::contains` error: trivial regex - --> tests/ui/regex.rs:90:36 + --> tests/ui/regex.rs:89:36 | LL | let trivial_empty = Regex::new(""); | ^^ @@ -172,7 +172,7 @@ LL | let trivial_empty = Regex::new(""); = help: the regex is unlikely to be useful as it is error: trivial regex - --> tests/ui/regex.rs:93:36 + --> tests/ui/regex.rs:92:36 | LL | let trivial_empty = Regex::new("^"); | ^^^ @@ -180,7 +180,7 @@ LL | let trivial_empty = Regex::new("^"); = help: the regex is unlikely to be useful as it is error: trivial regex - --> tests/ui/regex.rs:96:36 + --> tests/ui/regex.rs:95:36 | LL | let trivial_empty = Regex::new("^$"); | ^^^^ @@ -188,7 +188,7 @@ LL | let trivial_empty = Regex::new("^$"); = help: consider using `str::is_empty` error: trivial regex - --> tests/ui/regex.rs:99:44 + --> tests/ui/regex.rs:98:44 | LL | let binary_trivial_empty = BRegex::new("^$"); | ^^^^ -- cgit 1.4.1-3-g733a5 From 3a7a185f7ce7e853d8bcbcdb1a8f316e26719b75 Mon Sep 17 00:00:00 2001 From: Max Niederman Date: Sat, 5 Oct 2024 22:09:20 -0700 Subject: cover guard patterns in clippy lints --- clippy_lints/src/unnested_or_patterns.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/clippy_lints/src/unnested_or_patterns.rs b/clippy_lints/src/unnested_or_patterns.rs index c7c837de505..c649d5e5e1e 100644 --- a/clippy_lints/src/unnested_or_patterns.rs +++ b/clippy_lints/src/unnested_or_patterns.rs @@ -234,7 +234,7 @@ fn transform_with_focus_on_idx(alternatives: &mut ThinVec>, focus_idx: us // In the case of only two patterns, replacement adds net characters. | Ref(_, Mutability::Not) // Dealt with elsewhere. - | Or(_) | Paren(_) | Deref(_) => false, + | Or(_) | Paren(_) | Deref(_) | Guard(..) => false, // Transform `box x | ... | box y` into `box (x | y)`. // // The cases below until `Slice(...)` deal with *singleton* products. -- cgit 1.4.1-3-g733a5 From 44feca7f3fcefb7dc014001a0f1d6fb1135e51f8 Mon Sep 17 00:00:00 2001 From: Michael Howell Date: Tue, 19 Nov 2024 12:23:41 -0700 Subject: doc_nested_refdefs: new lint for suspicious refdef syntax This is more likely to be intended as an intra-doc link than it is to be intended as a refdef. If a refdef is intended, it does not need to be nested within a list item or quote. ```markdown - [`LONG_INTRA_DOC_LINK`]: this looks like an intra-doc link, but is actually a refdef. The first line will seem to disappear when rendered as HTML. ``` --- CHANGELOG.md | 1 + clippy_lints/src/declared_lints.rs | 1 + clippy_lints/src/doc/mod.rs | 111 ++++++++++++++++- tests/ui/doc/doc_nested_refdef_blockquote.fixed | 133 ++++++++++++++++++++ tests/ui/doc/doc_nested_refdef_blockquote.rs | 133 ++++++++++++++++++++ tests/ui/doc/doc_nested_refdef_blockquote.stderr | 148 +++++++++++++++++++++++ tests/ui/doc/doc_nested_refdef_list_item.fixed | 71 +++++++++++ tests/ui/doc/doc_nested_refdef_list_item.rs | 71 +++++++++++ tests/ui/doc/doc_nested_refdef_list_item.stderr | 148 +++++++++++++++++++++++ 9 files changed, 812 insertions(+), 5 deletions(-) create mode 100644 tests/ui/doc/doc_nested_refdef_blockquote.fixed create mode 100644 tests/ui/doc/doc_nested_refdef_blockquote.rs create mode 100644 tests/ui/doc/doc_nested_refdef_blockquote.stderr create mode 100644 tests/ui/doc/doc_nested_refdef_list_item.fixed create mode 100644 tests/ui/doc/doc_nested_refdef_list_item.rs create mode 100644 tests/ui/doc/doc_nested_refdef_list_item.stderr diff --git a/CHANGELOG.md b/CHANGELOG.md index cf2f2a871ec..afb1612d5a9 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -5445,6 +5445,7 @@ Released 2018-09-13 [`doc_lazy_continuation`]: https://rust-lang.github.io/rust-clippy/master/index.html#doc_lazy_continuation [`doc_link_with_quotes`]: https://rust-lang.github.io/rust-clippy/master/index.html#doc_link_with_quotes [`doc_markdown`]: https://rust-lang.github.io/rust-clippy/master/index.html#doc_markdown +[`doc_nested_refdefs`]: https://rust-lang.github.io/rust-clippy/master/index.html#doc_nested_refdefs [`double_comparisons`]: https://rust-lang.github.io/rust-clippy/master/index.html#double_comparisons [`double_must_use`]: https://rust-lang.github.io/rust-clippy/master/index.html#double_must_use [`double_neg`]: https://rust-lang.github.io/rust-clippy/master/index.html#double_neg diff --git a/clippy_lints/src/declared_lints.rs b/clippy_lints/src/declared_lints.rs index c4a0c8f1865..bc14c604fc3 100644 --- a/clippy_lints/src/declared_lints.rs +++ b/clippy_lints/src/declared_lints.rs @@ -139,6 +139,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::doc::DOC_LAZY_CONTINUATION_INFO, crate::doc::DOC_LINK_WITH_QUOTES_INFO, crate::doc::DOC_MARKDOWN_INFO, + crate::doc::DOC_NESTED_REFDEFS_INFO, crate::doc::EMPTY_DOCS_INFO, crate::doc::EMPTY_LINE_AFTER_DOC_COMMENTS_INFO, crate::doc::EMPTY_LINE_AFTER_OUTER_ATTR_INFO, diff --git a/clippy_lints/src/doc/mod.rs b/clippy_lints/src/doc/mod.rs index fd6ae21a5f8..f3a275db752 100644 --- a/clippy_lints/src/doc/mod.rs +++ b/clippy_lints/src/doc/mod.rs @@ -5,7 +5,7 @@ mod too_long_first_doc_paragraph; use clippy_config::Conf; use clippy_utils::attrs::is_doc_hidden; -use clippy_utils::diagnostics::{span_lint, span_lint_and_help}; +use clippy_utils::diagnostics::{span_lint, span_lint_and_help, span_lint_and_then}; use clippy_utils::macros::{is_panic, root_macro_call_first_node}; use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::visitors::Visitable; @@ -18,6 +18,7 @@ use pulldown_cmark::Tag::{BlockQuote, CodeBlock, FootnoteDefinition, Heading, It use pulldown_cmark::{BrokenLink, CodeBlockKind, CowStr, Options, TagEnd}; use rustc_ast::ast::Attribute; use rustc_data_structures::fx::FxHashSet; +use rustc_errors::Applicability; use rustc_hir::intravisit::{self, Visitor}; use rustc_hir::{AnonConst, Expr, ImplItemKind, ItemKind, Node, Safety, TraitItemKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; @@ -558,6 +559,32 @@ declare_clippy_lint! { "check if files included in documentation are behind `cfg(doc)`" } +declare_clippy_lint! { + /// ### What it does + /// Warns if a link reference definition appears at the start of a + /// list item or quote. + /// + /// ### Why is this bad? + /// This is probably intended as an intra-doc link. If it is really + /// supposed to be a reference definition, it can be written outside + /// of the list item or quote. + /// + /// ### Example + /// ```no_run + /// //! - [link]: description + /// ``` + /// Use instead: + /// ```no_run + /// //! - [link][]: description (for intra-doc link) + /// //! + /// //! [link]: destination (for link reference definition) + /// ``` + #[clippy::version = "1.84.0"] + pub DOC_NESTED_REFDEFS, + suspicious, + "link reference defined in list item or quote" +} + pub struct Documentation { valid_idents: FxHashSet, check_private_items: bool, @@ -575,6 +602,7 @@ impl Documentation { impl_lint_pass!(Documentation => [ DOC_LINK_WITH_QUOTES, DOC_MARKDOWN, + DOC_NESTED_REFDEFS, MISSING_SAFETY_DOC, MISSING_ERRORS_DOC, MISSING_PANICS_DOC, @@ -826,6 +854,31 @@ fn check_doc<'a, Events: Iterator, Range { blockquote_level += 1; containers.push(Container::Blockquote); + if let Some((next_event, next_range)) = events.peek() { + let next_start = match next_event { + End(TagEnd::BlockQuote) => next_range.end, + _ => next_range.start, + }; + if let Some(refdefrange) = looks_like_refdef(doc, range.start..next_start) && + let Some(refdefspan) = fragments.span(cx, refdefrange.clone()) + { + span_lint_and_then( + cx, + DOC_NESTED_REFDEFS, + refdefspan, + "link reference defined in quote", + |diag| { + diag.span_suggestion_short( + refdefspan.shrink_to_hi(), + "for an intra-doc link, add `[]` between the label and the colon", + "[]", + Applicability::MaybeIncorrect, + ); + diag.help("link definitions are not shown in rendered documentation"); + } + ); + } + } }, End(TagEnd::BlockQuote) => { blockquote_level -= 1; @@ -864,11 +917,37 @@ fn check_doc<'a, Events: Iterator, Range next_range.end, + _ => next_range.start, + }; + if let Some(refdefrange) = looks_like_refdef(doc, range.start..next_start) && + let Some(refdefspan) = fragments.span(cx, refdefrange.clone()) + { + span_lint_and_then( + cx, + DOC_NESTED_REFDEFS, + refdefspan, + "link reference defined in list item", + |diag| { + diag.span_suggestion_short( + refdefspan.shrink_to_hi(), + "for an intra-doc link, add `[]` between the label and the colon", + "[]", + Applicability::MaybeIncorrect, + ); + diag.help("link definitions are not shown in rendered documentation"); + } + ); + refdefrange.start - range.start + } else { + next_range.start - range.start + } } else { - containers.push(Container::List(0)); - } + 0 + }; + containers.push(Container::List(indent)); } ticks_unbalanced = false; paragraph_range = range; @@ -1040,3 +1119,25 @@ impl<'tcx> Visitor<'tcx> for FindPanicUnwrap<'_, 'tcx> { self.cx.tcx.hir() } } + +#[allow(clippy::range_plus_one)] // inclusive ranges aren't the same type +fn looks_like_refdef(doc: &str, range: Range) -> Option> { + let offset = range.start; + let mut iterator = doc.as_bytes()[range].iter().copied().enumerate(); + let mut start = None; + while let Some((i, byte)) = iterator.next() { + if byte == b'\\' { + iterator.next(); + continue; + } + if byte == b'[' { + start = Some(i + offset); + } + if let Some(start) = start + && byte == b']' + { + return Some(start..i + offset + 1); + } + } + None +} diff --git a/tests/ui/doc/doc_nested_refdef_blockquote.fixed b/tests/ui/doc/doc_nested_refdef_blockquote.fixed new file mode 100644 index 00000000000..8939a03d2e3 --- /dev/null +++ b/tests/ui/doc/doc_nested_refdef_blockquote.fixed @@ -0,0 +1,133 @@ +// https://github.com/rust-lang/rust/issues/133150 +#![warn(clippy::doc_nested_refdefs)] +#[rustfmt::skip] +/// > [link][]: def +//~^ ERROR: link reference defined in quote +/// +/// > [link][]: def (title) +//~^ ERROR: link reference defined in quote +/// +/// > [link][]: def "title" +//~^ ERROR: link reference defined in quote +/// +/// > [link]: not def +/// +/// > [link][]: notdef +/// +/// > [link]\: notdef +pub struct Empty; + +#[rustfmt::skip] +/// > [link][]: def +//~^ ERROR: link reference defined in quote +/// > inner text +/// +/// > [link][]: def (title) +//~^ ERROR: link reference defined in quote +/// > inner text +/// +/// > [link][]: def "title" +//~^ ERROR: link reference defined in quote +/// > inner text +/// +/// > [link]: not def +/// > inner text +/// +/// > [link][]: notdef +/// > inner text +/// +/// > [link]\: notdef +/// > inner text +pub struct NotEmpty; + +#[rustfmt::skip] +/// > [link][]: def +//~^ ERROR: link reference defined in quote +/// > +/// > inner text +/// +/// > [link][]: def (title) +//~^ ERROR: link reference defined in quote +/// > +/// > inner text +/// +/// > [link][]: def "title" +//~^ ERROR: link reference defined in quote +/// > +/// > inner text +/// +/// > [link]: not def +/// > +/// > inner text +/// +/// > [link][]: notdef +/// > +/// > inner text +/// +/// > [link]\: notdef +/// > +/// > inner text +pub struct NotEmptyLoose; + +#[rustfmt::skip] +/// > first lines +/// > [link]: def +/// +/// > first lines +/// > [link]: def (title) +/// +/// > firs lines +/// > [link]: def "title" +/// +/// > firs lines +/// > [link]: not def +/// +/// > first lines +/// > [link][]: notdef +/// +/// > first lines +/// > [link]\: notdef +pub struct NotAtStartTight; + +#[rustfmt::skip] +/// > first lines +/// > +/// > [link]: def +/// +/// > first lines +/// > +/// > [link]: def (title) +/// +/// > firs lines +/// > +/// > [link]: def "title" +/// +/// > firs lines +/// > +/// > [link]: not def +/// +/// > first lines +/// > +/// > [link][]: notdef +/// +/// > first lines +/// > +/// > [link]\: notdef +pub struct NotAtStartLoose; + +#[rustfmt::skip] +/// > - [link][]: def +//~^ ERROR: link reference defined in list item +/// > +/// > - [link][]: def (title) +//~^ ERROR: link reference defined in list item +/// > +/// > - [link][]: def "title" +//~^ ERROR: link reference defined in list item +/// > +/// > - [link]: not def +/// > +/// > - [link][]: notdef +/// > +/// > - [link]\: notdef +pub struct ListNested; diff --git a/tests/ui/doc/doc_nested_refdef_blockquote.rs b/tests/ui/doc/doc_nested_refdef_blockquote.rs new file mode 100644 index 00000000000..f861242384b --- /dev/null +++ b/tests/ui/doc/doc_nested_refdef_blockquote.rs @@ -0,0 +1,133 @@ +// https://github.com/rust-lang/rust/issues/133150 +#![warn(clippy::doc_nested_refdefs)] +#[rustfmt::skip] +/// > [link]: def +//~^ ERROR: link reference defined in quote +/// +/// > [link]: def (title) +//~^ ERROR: link reference defined in quote +/// +/// > [link]: def "title" +//~^ ERROR: link reference defined in quote +/// +/// > [link]: not def +/// +/// > [link][]: notdef +/// +/// > [link]\: notdef +pub struct Empty; + +#[rustfmt::skip] +/// > [link]: def +//~^ ERROR: link reference defined in quote +/// > inner text +/// +/// > [link]: def (title) +//~^ ERROR: link reference defined in quote +/// > inner text +/// +/// > [link]: def "title" +//~^ ERROR: link reference defined in quote +/// > inner text +/// +/// > [link]: not def +/// > inner text +/// +/// > [link][]: notdef +/// > inner text +/// +/// > [link]\: notdef +/// > inner text +pub struct NotEmpty; + +#[rustfmt::skip] +/// > [link]: def +//~^ ERROR: link reference defined in quote +/// > +/// > inner text +/// +/// > [link]: def (title) +//~^ ERROR: link reference defined in quote +/// > +/// > inner text +/// +/// > [link]: def "title" +//~^ ERROR: link reference defined in quote +/// > +/// > inner text +/// +/// > [link]: not def +/// > +/// > inner text +/// +/// > [link][]: notdef +/// > +/// > inner text +/// +/// > [link]\: notdef +/// > +/// > inner text +pub struct NotEmptyLoose; + +#[rustfmt::skip] +/// > first lines +/// > [link]: def +/// +/// > first lines +/// > [link]: def (title) +/// +/// > firs lines +/// > [link]: def "title" +/// +/// > firs lines +/// > [link]: not def +/// +/// > first lines +/// > [link][]: notdef +/// +/// > first lines +/// > [link]\: notdef +pub struct NotAtStartTight; + +#[rustfmt::skip] +/// > first lines +/// > +/// > [link]: def +/// +/// > first lines +/// > +/// > [link]: def (title) +/// +/// > firs lines +/// > +/// > [link]: def "title" +/// +/// > firs lines +/// > +/// > [link]: not def +/// +/// > first lines +/// > +/// > [link][]: notdef +/// +/// > first lines +/// > +/// > [link]\: notdef +pub struct NotAtStartLoose; + +#[rustfmt::skip] +/// > - [link]: def +//~^ ERROR: link reference defined in list item +/// > +/// > - [link]: def (title) +//~^ ERROR: link reference defined in list item +/// > +/// > - [link]: def "title" +//~^ ERROR: link reference defined in list item +/// > +/// > - [link]: not def +/// > +/// > - [link][]: notdef +/// > +/// > - [link]\: notdef +pub struct ListNested; diff --git a/tests/ui/doc/doc_nested_refdef_blockquote.stderr b/tests/ui/doc/doc_nested_refdef_blockquote.stderr new file mode 100644 index 00000000000..448659b8941 --- /dev/null +++ b/tests/ui/doc/doc_nested_refdef_blockquote.stderr @@ -0,0 +1,148 @@ +error: link reference defined in quote + --> tests/ui/doc/doc_nested_refdef_blockquote.rs:4:7 + | +LL | /// > [link]: def + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation + = note: `-D clippy::doc-nested-refdefs` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::doc_nested_refdefs)]` +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// > [link][]: def + | ++ + +error: link reference defined in quote + --> tests/ui/doc/doc_nested_refdef_blockquote.rs:7:7 + | +LL | /// > [link]: def (title) + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// > [link][]: def (title) + | ++ + +error: link reference defined in quote + --> tests/ui/doc/doc_nested_refdef_blockquote.rs:10:7 + | +LL | /// > [link]: def "title" + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// > [link][]: def "title" + | ++ + +error: link reference defined in quote + --> tests/ui/doc/doc_nested_refdef_blockquote.rs:21:7 + | +LL | /// > [link]: def + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// > [link][]: def + | ++ + +error: link reference defined in quote + --> tests/ui/doc/doc_nested_refdef_blockquote.rs:25:7 + | +LL | /// > [link]: def (title) + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// > [link][]: def (title) + | ++ + +error: link reference defined in quote + --> tests/ui/doc/doc_nested_refdef_blockquote.rs:29:7 + | +LL | /// > [link]: def "title" + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// > [link][]: def "title" + | ++ + +error: link reference defined in quote + --> tests/ui/doc/doc_nested_refdef_blockquote.rs:44:7 + | +LL | /// > [link]: def + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// > [link][]: def + | ++ + +error: link reference defined in quote + --> tests/ui/doc/doc_nested_refdef_blockquote.rs:49:7 + | +LL | /// > [link]: def (title) + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// > [link][]: def (title) + | ++ + +error: link reference defined in quote + --> tests/ui/doc/doc_nested_refdef_blockquote.rs:54:7 + | +LL | /// > [link]: def "title" + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// > [link][]: def "title" + | ++ + +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_blockquote.rs:119:9 + | +LL | /// > - [link]: def + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// > - [link][]: def + | ++ + +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_blockquote.rs:122:9 + | +LL | /// > - [link]: def (title) + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// > - [link][]: def (title) + | ++ + +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_blockquote.rs:125:9 + | +LL | /// > - [link]: def "title" + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// > - [link][]: def "title" + | ++ + +error: aborting due to 12 previous errors + diff --git a/tests/ui/doc/doc_nested_refdef_list_item.fixed b/tests/ui/doc/doc_nested_refdef_list_item.fixed new file mode 100644 index 00000000000..fcfcfcc4073 --- /dev/null +++ b/tests/ui/doc/doc_nested_refdef_list_item.fixed @@ -0,0 +1,71 @@ +// https://github.com/rust-lang/rust/issues/133150 +#![warn(clippy::doc_nested_refdefs)] +#[rustfmt::skip] +/// - [link][]: def +//~^ ERROR: link reference defined in list item +/// +/// - [link][]: def (title) +//~^ ERROR: link reference defined in list item +/// +/// - [link][]: def "title" +//~^ ERROR: link reference defined in list item +/// +/// - [link]: not def +/// +/// - [link][]: notdef +/// +/// - [link]\: notdef +pub struct Empty; + +#[rustfmt::skip] +/// - [link][]: def +//~^ ERROR: link reference defined in list item +/// - [link][]: def (title) +//~^ ERROR: link reference defined in list item +/// - [link][]: def "title" +//~^ ERROR: link reference defined in list item +/// - [link]: not def +/// - [link][]: notdef +/// - [link]\: notdef +pub struct EmptyTight; + +#[rustfmt::skip] +/// - [link][]: def +//~^ ERROR: link reference defined in list item +/// inner text +/// +/// - [link][]: def (title) +//~^ ERROR: link reference defined in list item +/// inner text +/// +/// - [link][]: def "title" +//~^ ERROR: link reference defined in list item +/// inner text +/// +/// - [link]: not def +/// inner text +/// +/// - [link][]: notdef +/// inner text +/// +/// - [link]\: notdef +/// inner text +pub struct NotEmpty; + +#[rustfmt::skip] +/// - [link][]: def +//~^ ERROR: link reference defined in list item +/// inner text +/// - [link][]: def (title) +//~^ ERROR: link reference defined in list item +/// inner text +/// - [link][]: def "title" +//~^ ERROR: link reference defined in list item +/// inner text +/// - [link]: not def +/// inner text +/// - [link][]: notdef +/// inner text +/// - [link]\: notdef +/// inner text +pub struct NotEmptyTight; diff --git a/tests/ui/doc/doc_nested_refdef_list_item.rs b/tests/ui/doc/doc_nested_refdef_list_item.rs new file mode 100644 index 00000000000..53368de4616 --- /dev/null +++ b/tests/ui/doc/doc_nested_refdef_list_item.rs @@ -0,0 +1,71 @@ +// https://github.com/rust-lang/rust/issues/133150 +#![warn(clippy::doc_nested_refdefs)] +#[rustfmt::skip] +/// - [link]: def +//~^ ERROR: link reference defined in list item +/// +/// - [link]: def (title) +//~^ ERROR: link reference defined in list item +/// +/// - [link]: def "title" +//~^ ERROR: link reference defined in list item +/// +/// - [link]: not def +/// +/// - [link][]: notdef +/// +/// - [link]\: notdef +pub struct Empty; + +#[rustfmt::skip] +/// - [link]: def +//~^ ERROR: link reference defined in list item +/// - [link]: def (title) +//~^ ERROR: link reference defined in list item +/// - [link]: def "title" +//~^ ERROR: link reference defined in list item +/// - [link]: not def +/// - [link][]: notdef +/// - [link]\: notdef +pub struct EmptyTight; + +#[rustfmt::skip] +/// - [link]: def +//~^ ERROR: link reference defined in list item +/// inner text +/// +/// - [link]: def (title) +//~^ ERROR: link reference defined in list item +/// inner text +/// +/// - [link]: def "title" +//~^ ERROR: link reference defined in list item +/// inner text +/// +/// - [link]: not def +/// inner text +/// +/// - [link][]: notdef +/// inner text +/// +/// - [link]\: notdef +/// inner text +pub struct NotEmpty; + +#[rustfmt::skip] +/// - [link]: def +//~^ ERROR: link reference defined in list item +/// inner text +/// - [link]: def (title) +//~^ ERROR: link reference defined in list item +/// inner text +/// - [link]: def "title" +//~^ ERROR: link reference defined in list item +/// inner text +/// - [link]: not def +/// inner text +/// - [link][]: notdef +/// inner text +/// - [link]\: notdef +/// inner text +pub struct NotEmptyTight; diff --git a/tests/ui/doc/doc_nested_refdef_list_item.stderr b/tests/ui/doc/doc_nested_refdef_list_item.stderr new file mode 100644 index 00000000000..27314c7e968 --- /dev/null +++ b/tests/ui/doc/doc_nested_refdef_list_item.stderr @@ -0,0 +1,148 @@ +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_list_item.rs:4:7 + | +LL | /// - [link]: def + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation + = note: `-D clippy::doc-nested-refdefs` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::doc_nested_refdefs)]` +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// - [link][]: def + | ++ + +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_list_item.rs:7:7 + | +LL | /// - [link]: def (title) + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// - [link][]: def (title) + | ++ + +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_list_item.rs:10:7 + | +LL | /// - [link]: def "title" + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// - [link][]: def "title" + | ++ + +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_list_item.rs:21:7 + | +LL | /// - [link]: def + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// - [link][]: def + | ++ + +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_list_item.rs:23:7 + | +LL | /// - [link]: def (title) + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// - [link][]: def (title) + | ++ + +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_list_item.rs:25:7 + | +LL | /// - [link]: def "title" + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// - [link][]: def "title" + | ++ + +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_list_item.rs:33:7 + | +LL | /// - [link]: def + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// - [link][]: def + | ++ + +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_list_item.rs:37:7 + | +LL | /// - [link]: def (title) + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// - [link][]: def (title) + | ++ + +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_list_item.rs:41:7 + | +LL | /// - [link]: def "title" + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// - [link][]: def "title" + | ++ + +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_list_item.rs:56:7 + | +LL | /// - [link]: def + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// - [link][]: def + | ++ + +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_list_item.rs:59:7 + | +LL | /// - [link]: def (title) + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// - [link][]: def (title) + | ++ + +error: link reference defined in list item + --> tests/ui/doc/doc_nested_refdef_list_item.rs:62:7 + | +LL | /// - [link]: def "title" + | ^^^^^^ + | + = help: link definitions are not shown in rendered documentation +help: for an intra-doc link, add `[]` between the label and the colon + | +LL | /// - [link][]: def "title" + | ++ + +error: aborting due to 12 previous errors + -- cgit 1.4.1-3-g733a5 From 8dd45f18b3e443749f2e607eb0dfb7edf181a92d Mon Sep 17 00:00:00 2001 From: Michael Howell Date: Wed, 27 Nov 2024 13:47:15 -0700 Subject: doc_nested_refdefs: apply suggestions Co-Authored-By: Jason Newcomb --- clippy_lints/src/doc/mod.rs | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/clippy_lints/src/doc/mod.rs b/clippy_lints/src/doc/mod.rs index f3a275db752..2b06e34a61c 100644 --- a/clippy_lints/src/doc/mod.rs +++ b/clippy_lints/src/doc/mod.rs @@ -1120,23 +1120,23 @@ impl<'tcx> Visitor<'tcx> for FindPanicUnwrap<'_, 'tcx> { } } -#[allow(clippy::range_plus_one)] // inclusive ranges aren't the same type +#[expect(clippy::range_plus_one)] // inclusive ranges aren't the same type fn looks_like_refdef(doc: &str, range: Range) -> Option> { let offset = range.start; let mut iterator = doc.as_bytes()[range].iter().copied().enumerate(); let mut start = None; while let Some((i, byte)) = iterator.next() { - if byte == b'\\' { - iterator.next(); - continue; - } - if byte == b'[' { - start = Some(i + offset); - } - if let Some(start) = start - && byte == b']' - { - return Some(start..i + offset + 1); + match byte { + b'\\' => { + iterator.next(); + }, + b'[' => { + start = Some(i + offset); + }, + b']' if let Some(start) = start => { + return Some(start..i + offset + 1); + }, + _ => {}, } } None -- cgit 1.4.1-3-g733a5 From 66e212b54456679306b6c076bce433b397d3569b Mon Sep 17 00:00:00 2001 From: Natsume-Neko Date: Thu, 28 Nov 2024 16:52:11 +0800 Subject: Extend `precedence` for bitmasking and shift Changelog: extended [`precedence`] to lint for bitmasking and bit shifting without parentheses --- clippy_lints/src/precedence.rs | 33 ++++++++++++++++++--------------- tests/ui/precedence.fixed | 4 ++++ tests/ui/precedence.rs | 4 ++++ tests/ui/precedence.stderr | 26 +++++++++++++++++++++++++- 4 files changed, 51 insertions(+), 16 deletions(-) diff --git a/clippy_lints/src/precedence.rs b/clippy_lints/src/precedence.rs index 37f5dd5583b..031f0931059 100644 --- a/clippy_lints/src/precedence.rs +++ b/clippy_lints/src/precedence.rs @@ -1,5 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_applicability; +use rustc_ast::ast::BinOpKind::{Add, BitAnd, BitOr, BitXor, Div, Mul, Rem, Shl, Shr, Sub}; use rustc_ast::ast::{BinOpKind, Expr, ExprKind}; use rustc_errors::Applicability; use rustc_lint::{EarlyContext, EarlyLintPass}; @@ -12,6 +13,7 @@ declare_clippy_lint! { /// and suggests to add parentheses. Currently it catches the following: /// * mixed usage of arithmetic and bit shifting/combining operators without /// parentheses + /// * mixed usage of bitmasking and bit shifting operators without parentheses /// /// ### Why is this bad? /// Not everyone knows the precedence of those operators by @@ -20,6 +22,7 @@ declare_clippy_lint! { /// /// ### Example /// * `1 << 2 + 3` equals 32, while `(1 << 2) + 3` equals 7 + /// * `0x2345 & 0xF000 >> 12` equals 5, while `(0x2345 & 0xF000) >> 12` equals 2 #[clippy::version = "pre 1.29.0"] pub PRECEDENCE, complexity, @@ -51,8 +54,13 @@ impl EarlyLintPass for Precedence { return; } let mut applicability = Applicability::MachineApplicable; - match (is_arith_expr(left), is_arith_expr(right)) { - (true, true) => { + match (op, get_bin_opt(left), get_bin_opt(right)) { + ( + BitAnd | BitOr | BitXor, + Some(Shl | Shr | Add | Div | Mul | Rem | Sub), + Some(Shl | Shr | Add | Div | Mul | Rem | Sub), + ) + | (Shl | Shr, Some(Add | Div | Mul | Rem | Sub), Some(Add | Div | Mul | Rem | Sub)) => { let sugg = format!( "({}) {} ({})", snippet_with_applicability(cx, left.span, "..", &mut applicability), @@ -61,7 +69,8 @@ impl EarlyLintPass for Precedence { ); span_sugg(expr, sugg, applicability); }, - (true, false) => { + (BitAnd | BitOr | BitXor, Some(Shl | Shr | Add | Div | Mul | Rem | Sub), _) + | (Shl | Shr, Some(Add | Div | Mul | Rem | Sub), _) => { let sugg = format!( "({}) {} {}", snippet_with_applicability(cx, left.span, "..", &mut applicability), @@ -70,7 +79,8 @@ impl EarlyLintPass for Precedence { ); span_sugg(expr, sugg, applicability); }, - (false, true) => { + (BitAnd | BitOr | BitXor, _, Some(Shl | Shr | Add | Div | Mul | Rem | Sub)) + | (Shl | Shr, _, Some(Add | Div | Mul | Rem | Sub)) => { let sugg = format!( "{} {} ({})", snippet_with_applicability(cx, left.span, "..", &mut applicability), @@ -79,27 +89,20 @@ impl EarlyLintPass for Precedence { ); span_sugg(expr, sugg, applicability); }, - (false, false) => (), + _ => (), } } } } -fn is_arith_expr(expr: &Expr) -> bool { +fn get_bin_opt(expr: &Expr) -> Option { match expr.kind { - ExprKind::Binary(Spanned { node: op, .. }, _, _) => is_arith_op(op), - _ => false, + ExprKind::Binary(Spanned { node: op, .. }, _, _) => Some(op), + _ => None, } } #[must_use] fn is_bit_op(op: BinOpKind) -> bool { - use rustc_ast::ast::BinOpKind::{BitAnd, BitOr, BitXor, Shl, Shr}; matches!(op, BitXor | BitAnd | BitOr | Shl | Shr) } - -#[must_use] -fn is_arith_op(op: BinOpKind) -> bool { - use rustc_ast::ast::BinOpKind::{Add, Div, Mul, Rem, Sub}; - matches!(op, Add | Sub | Mul | Div | Rem) -} diff --git a/tests/ui/precedence.fixed b/tests/ui/precedence.fixed index c25c2062ace..01e8c3fb0bd 100644 --- a/tests/ui/precedence.fixed +++ b/tests/ui/precedence.fixed @@ -20,6 +20,10 @@ fn main() { 1 ^ (1 - 1); 3 | (2 - 1); 3 & (5 - 2); + 12 & (0xF000 << 4); + 12 & (0xF000 >> 4); + (12 << 4) ^ 0xF000; + (12 << 4) | 0xF000; let b = 3; trip!(b * 8); diff --git a/tests/ui/precedence.rs b/tests/ui/precedence.rs index dc242ecf4c7..9937d96592e 100644 --- a/tests/ui/precedence.rs +++ b/tests/ui/precedence.rs @@ -20,6 +20,10 @@ fn main() { 1 ^ 1 - 1; 3 | 2 - 1; 3 & 5 - 2; + 12 & 0xF000 << 4; + 12 & 0xF000 >> 4; + 12 << 4 ^ 0xF000; + 12 << 4 | 0xF000; let b = 3; trip!(b * 8); diff --git a/tests/ui/precedence.stderr b/tests/ui/precedence.stderr index 8057c25a5e4..b1226e97aeb 100644 --- a/tests/ui/precedence.stderr +++ b/tests/ui/precedence.stderr @@ -43,5 +43,29 @@ error: operator precedence can trip the unwary LL | 3 & 5 - 2; | ^^^^^^^^^ help: consider parenthesizing your expression: `3 & (5 - 2)` -error: aborting due to 7 previous errors +error: operator precedence can trip the unwary + --> tests/ui/precedence.rs:23:5 + | +LL | 12 & 0xF000 << 4; + | ^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `12 & (0xF000 << 4)` + +error: operator precedence can trip the unwary + --> tests/ui/precedence.rs:24:5 + | +LL | 12 & 0xF000 >> 4; + | ^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `12 & (0xF000 >> 4)` + +error: operator precedence can trip the unwary + --> tests/ui/precedence.rs:25:5 + | +LL | 12 << 4 ^ 0xF000; + | ^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `(12 << 4) ^ 0xF000` + +error: operator precedence can trip the unwary + --> tests/ui/precedence.rs:26:5 + | +LL | 12 << 4 | 0xF000; + | ^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `(12 << 4) | 0xF000` + +error: aborting due to 11 previous errors -- cgit 1.4.1-3-g733a5 From d58b911e0170c6a06859dd70619b4d991a32e4d4 Mon Sep 17 00:00:00 2001 From: Philipp Krones Date: Thu, 28 Nov 2024 19:38:59 +0100 Subject: Merge commit 'ff4a26d442bead94a4c96fb1de967374bc4fbd8e' into clippy-subtree-update --- CHANGELOG.md | 50 +++- Cargo.toml | 6 +- book/src/SUMMARY.md | 1 + book/src/attribs.md | 53 ++++ book/src/development/adding_lints.md | 4 +- book/src/lint_configuration.md | 2 +- clippy_config/Cargo.toml | 6 +- clippy_config/src/conf.rs | 6 +- clippy_config/src/lib.rs | 8 +- clippy_config/src/msrvs.rs | 165 ------------ clippy_config/src/types.rs | 15 ++ clippy_dev/Cargo.toml | 1 + clippy_dev/src/dogfood.rs | 2 +- clippy_dev/src/fmt.rs | 2 +- clippy_dev/src/lib.rs | 62 +---- clippy_dev/src/lint.rs | 2 +- clippy_dev/src/main.rs | 44 ++- clippy_dev/src/new_lint.rs | 25 +- clippy_dev/src/release.rs | 27 ++ clippy_dev/src/sync.rs | 33 +++ clippy_dev/src/update_lints.rs | 71 +---- clippy_dev/src/utils.rs | 142 ++++++++++ clippy_lints/Cargo.toml | 4 +- clippy_lints/src/almost_complete_range.rs | 2 +- clippy_lints/src/approx_const.rs | 4 +- clippy_lints/src/assigning_clones.rs | 6 +- clippy_lints/src/attrs/deprecated_cfg_attr.rs | 2 +- clippy_lints/src/attrs/mod.rs | 2 +- clippy_lints/src/await_holding_invalid.rs | 3 +- clippy_lints/src/booleans.rs | 2 +- clippy_lints/src/borrow_deref_ref.rs | 2 +- clippy_lints/src/cargo/common_metadata.rs | 2 +- clippy_lints/src/casts/cast_abs_to_unsigned.rs | 2 +- clippy_lints/src/casts/cast_lossless.rs | 2 +- clippy_lints/src/casts/cast_possible_truncation.rs | 2 +- .../src/casts/cast_slice_different_sizes.rs | 2 +- .../src/casts/cast_slice_from_raw_parts.rs | 2 +- clippy_lints/src/casts/mod.rs | 2 +- clippy_lints/src/casts/ptr_as_ptr.rs | 2 +- clippy_lints/src/casts/ptr_cast_constness.rs | 2 +- clippy_lints/src/checked_conversions.rs | 2 +- clippy_lints/src/copies.rs | 4 +- clippy_lints/src/declared_lints.rs | 1 + clippy_lints/src/dereference.rs | 15 +- clippy_lints/src/derivable_impls.rs | 50 ++-- clippy_lints/src/derive.rs | 20 +- clippy_lints/src/disallowed_macros.rs | 2 +- clippy_lints/src/disallowed_methods.rs | 2 +- clippy_lints/src/doc/include_in_doc_without_cfg.rs | 45 ++++ clippy_lints/src/doc/mod.rs | 35 +++ clippy_lints/src/eta_reduction.rs | 2 +- clippy_lints/src/excessive_bools.rs | 2 +- clippy_lints/src/extra_unused_type_parameters.rs | 2 +- clippy_lints/src/format_args.rs | 2 +- clippy_lints/src/from_over_into.rs | 4 +- clippy_lints/src/future_not_send.rs | 67 ++++- clippy_lints/src/if_let_mutex.rs | 13 +- clippy_lints/src/if_then_some_else_none.rs | 2 +- clippy_lints/src/implicit_saturating_sub.rs | 2 +- clippy_lints/src/incompatible_msrv.rs | 2 +- clippy_lints/src/index_refutable_slice.rs | 2 +- clippy_lints/src/instant_subtraction.rs | 2 +- clippy_lints/src/large_const_arrays.rs | 2 +- clippy_lints/src/legacy_numeric_constants.rs | 6 +- clippy_lints/src/lifetimes.rs | 55 +++- clippy_lints/src/loops/explicit_iter_loop.rs | 7 +- clippy_lints/src/loops/mod.rs | 2 +- clippy_lints/src/manual_bits.rs | 2 +- clippy_lints/src/manual_clamp.rs | 2 +- clippy_lints/src/manual_div_ceil.rs | 4 +- clippy_lints/src/manual_float_methods.rs | 4 +- clippy_lints/src/manual_hash_one.rs | 2 +- clippy_lints/src/manual_is_ascii_check.rs | 2 +- clippy_lints/src/manual_is_power_of_two.rs | 2 +- clippy_lints/src/manual_let_else.rs | 3 +- clippy_lints/src/manual_main_separator_str.rs | 2 +- clippy_lints/src/manual_non_exhaustive.rs | 2 +- clippy_lints/src/manual_rem_euclid.rs | 2 +- clippy_lints/src/manual_retain.rs | 2 +- clippy_lints/src/manual_strip.rs | 2 +- clippy_lints/src/matches/collapsible_match.rs | 7 +- clippy_lints/src/matches/mod.rs | 2 +- clippy_lints/src/matches/redundant_guards.rs | 9 +- clippy_lints/src/mem_replace.rs | 2 +- clippy_lints/src/methods/clone_on_copy.rs | 2 +- .../src/methods/cloned_instead_of_copied.rs | 2 +- clippy_lints/src/methods/err_expect.rs | 2 +- clippy_lints/src/methods/filter_map_next.rs | 2 +- clippy_lints/src/methods/is_digit_ascii_radix.rs | 2 +- clippy_lints/src/methods/iter_kv_map.rs | 2 +- clippy_lints/src/methods/manual_c_str_literals.rs | 2 +- clippy_lints/src/methods/manual_inspect.rs | 2 +- clippy_lints/src/methods/manual_is_variant_and.rs | 4 +- clippy_lints/src/methods/manual_try_fold.rs | 2 +- clippy_lints/src/methods/map_clone.rs | 2 +- clippy_lints/src/methods/map_unwrap_or.rs | 2 +- .../map_with_unused_argument_over_ranges.rs | 2 +- clippy_lints/src/methods/mod.rs | 24 +- clippy_lints/src/methods/needless_collect.rs | 3 +- clippy_lints/src/methods/option_as_ref_deref.rs | 2 +- clippy_lints/src/methods/option_map_unwrap_or.rs | 2 +- clippy_lints/src/methods/path_ends_with_ext.rs | 2 +- clippy_lints/src/methods/str_splitn.rs | 2 +- clippy_lints/src/methods/string_lit_chars_any.rs | 2 +- clippy_lints/src/methods/unnecessary_filter_map.rs | 2 +- clippy_lints/src/methods/unnecessary_map_or.rs | 22 +- clippy_lints/src/methods/unnecessary_to_owned.rs | 2 +- clippy_lints/src/misc.rs | 4 +- clippy_lints/src/missing_const_for_fn.rs | 2 +- clippy_lints/src/missing_const_for_thread_local.rs | 2 +- .../src/needless_borrows_for_generic_args.rs | 4 +- clippy_lints/src/needless_pass_by_value.rs | 11 +- clippy_lints/src/no_effect.rs | 2 +- clippy_lints/src/non_copy_const.rs | 9 +- clippy_lints/src/non_zero_suggestions.rs | 2 +- clippy_lints/src/only_used_in_recursion.rs | 2 +- clippy_lints/src/operators/assign_op_pattern.rs | 2 +- clippy_lints/src/operators/bit_mask.rs | 5 +- clippy_lints/src/ptr.rs | 4 +- clippy_lints/src/question_mark.rs | 2 +- clippy_lints/src/ranges.rs | 2 +- clippy_lints/src/redundant_async_block.rs | 2 +- clippy_lints/src/redundant_field_names.rs | 2 +- clippy_lints/src/redundant_static_lifetimes.rs | 2 +- clippy_lints/src/single_call_fn.rs | 2 +- clippy_lints/src/std_instead_of_core.rs | 2 +- clippy_lints/src/string_patterns.rs | 2 +- clippy_lints/src/trailing_empty_array.rs | 7 +- clippy_lints/src/trait_bounds.rs | 2 +- clippy_lints/src/transmute/mod.rs | 2 +- .../src/transmute/transmute_float_to_int.rs | 2 +- .../src/transmute/transmute_int_to_float.rs | 2 +- .../src/transmute/transmute_num_to_bytes.rs | 2 +- clippy_lints/src/transmute/transmute_ptr_to_ptr.rs | 2 +- clippy_lints/src/transmute/transmute_ptr_to_ref.rs | 2 +- .../transmutes_expressible_as_ptr_casts.rs | 3 +- clippy_lints/src/tuple_array_conversions.rs | 2 +- clippy_lints/src/undocumented_unsafe_blocks.rs | 2 +- clippy_lints/src/unit_types/let_unit_value.rs | 2 +- clippy_lints/src/unnested_or_patterns.rs | 2 +- clippy_lints/src/unused_trait_names.rs | 2 +- clippy_lints/src/upper_case_acronyms.rs | 2 +- clippy_lints/src/use_self.rs | 4 +- .../src/utils/internal_lints/invalid_paths.rs | 11 +- clippy_lints/src/vec.rs | 2 +- clippy_lints/src/zombie_processes.rs | 2 +- clippy_utils/Cargo.toml | 13 +- clippy_utils/README.md | 40 +++ clippy_utils/src/attrs.rs | 3 + clippy_utils/src/consts.rs | 4 +- clippy_utils/src/hir_utils.rs | 18 +- clippy_utils/src/lib.rs | 44 ++- clippy_utils/src/macros.rs | 9 +- clippy_utils/src/msrvs.rs | 165 ++++++++++++ clippy_utils/src/paths.rs | 2 +- clippy_utils/src/qualify_min_const_fn.rs | 5 +- clippy_utils/src/ty.rs | 17 +- clippy_utils/src/usage.rs | 2 +- rust-toolchain | 4 +- tests/ui-internal/invalid_msrv_attr_impl.fixed | 2 +- tests/ui-internal/invalid_msrv_attr_impl.rs | 2 +- tests/ui/crashes/ice-10645.rs | 7 - tests/ui/crashes/ice-10645.stderr | 17 -- tests/ui/derivable_impls.fixed | 295 +++++++++++++++++++++ tests/ui/derivable_impls.rs | 2 - tests/ui/derivable_impls.stderr | 60 ++--- tests/ui/doc/doc_include_without_cfg.fixed | 40 +++ tests/ui/doc/doc_include_without_cfg.rs | 40 +++ tests/ui/doc/doc_include_without_cfg.stderr | 17 ++ tests/ui/extra_unused_lifetimes.rs | 7 + tests/ui/format_args_unfixable.rs | 29 ++ tests/ui/format_args_unfixable.stderr | 65 ++++- tests/ui/future_not_send.rs | 18 +- tests/ui/future_not_send.stderr | 51 ++-- tests/ui/if_let_mutex.edition2021.stderr | 73 +++++ tests/ui/if_let_mutex.rs | 11 +- tests/ui/if_let_mutex.stderr | 73 ----- tests/ui/missing_const_for_fn/could_be_const.fixed | 6 +- tests/ui/missing_const_for_fn/could_be_const.rs | 6 +- .../ui/missing_const_for_fn/could_be_const.stderr | 24 +- tests/ui/missing_doc_crate.rs | 1 + tests/ui/redundant_guards.fixed | 15 +- tests/ui/redundant_guards.rs | 11 +- tests/ui/redundant_guards.stderr | 86 +++--- tests/ui/trait_duplication_in_bounds.fixed | 18 +- tests/ui/trait_duplication_in_bounds.rs | 18 +- tests/ui/trait_duplication_in_bounds.stderr | 8 +- tests/ui/uninlined_format_args.fixed | 21 +- tests/ui/uninlined_format_args.rs | 21 +- tests/ui/uninlined_format_args.stderr | 50 +++- tests/ui/unnecessary_map_or.fixed | 22 +- tests/ui/unnecessary_map_or.rs | 20 +- tests/ui/unnecessary_map_or.stderr | 60 +++-- tests/ui/unused_format_specs.1.fixed | 35 +++ tests/ui/unused_format_specs.2.fixed | 35 +++ tests/ui/unused_format_specs.rs | 35 +++ tests/ui/unused_format_specs.stderr | 60 ++++- 197 files changed, 2191 insertions(+), 880 deletions(-) create mode 100644 book/src/attribs.md delete mode 100644 clippy_config/src/msrvs.rs create mode 100644 clippy_dev/src/release.rs create mode 100644 clippy_dev/src/sync.rs create mode 100644 clippy_dev/src/utils.rs create mode 100644 clippy_lints/src/doc/include_in_doc_without_cfg.rs create mode 100644 clippy_utils/README.md create mode 100644 clippy_utils/src/msrvs.rs delete mode 100644 tests/ui/crashes/ice-10645.rs delete mode 100644 tests/ui/crashes/ice-10645.stderr create mode 100644 tests/ui/derivable_impls.fixed create mode 100644 tests/ui/doc/doc_include_without_cfg.fixed create mode 100644 tests/ui/doc/doc_include_without_cfg.rs create mode 100644 tests/ui/doc/doc_include_without_cfg.stderr create mode 100644 tests/ui/if_let_mutex.edition2021.stderr delete mode 100644 tests/ui/if_let_mutex.stderr diff --git a/CHANGELOG.md b/CHANGELOG.md index dd3124ee9a3..61efaa3bf3e 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -6,11 +6,56 @@ document. ## Unreleased / Beta / In Rust Nightly -[0f8eabd6...master](https://github.com/rust-lang/rust-clippy/compare/0f8eabd6...master) +[aa0d5513...master](https://github.com/rust-lang/rust-clippy/compare/aa0d5513...master) + +## Rust 1.83 + +Current stable, released 2024-11-28 + +[View all 64 merged pull requests](https://github.com/rust-lang/rust-clippy/pulls?q=merged%3A2024-08-25T09%3A59%3A01Z..2024-10-03T13%3A42%3A56Z+base%3Amaster) + +### Important Change + +* Removed the implicit `cargo-clippy` feature set by Clippy as announced here: + + [#13246](https://github.com/rust-lang/rust-clippy/pull/13246) + +### New Lints + +* Added [`unused_trait_names`] to `restriction` + [#13322](https://github.com/rust-lang/rust-clippy/pull/13322) +* Added [`unnecessary_first_then_check`] to `complexity` + [#13421](https://github.com/rust-lang/rust-clippy/pull/13421) +* Added [`non_zero_suggestions`] to `restriction` + [#13167](https://github.com/rust-lang/rust-clippy/pull/13167) +* Added [`manual_is_power_of_two`] to `pedantic` + [#13327](https://github.com/rust-lang/rust-clippy/pull/13327) +* Added [`manual_div_ceil`] to `complexity` + [#12987](https://github.com/rust-lang/rust-clippy/pull/12987) +* Added [`zombie_processes`] to `suspicious` + [#11476](https://github.com/rust-lang/rust-clippy/pull/11476) +* Added [`used_underscore_items`] to `pedantic` + [#13294](https://github.com/rust-lang/rust-clippy/pull/13294) + +### Moves and Deprecations + +* Moved [`ref_option`] to `pedantic` (From `nursery`) + [#13469](https://github.com/rust-lang/rust-clippy/pull/13469) +* Moved [`manual_c_str_literals`] to `complexity` (From `pedantic`, now warn-by-default) + [#13263](https://github.com/rust-lang/rust-clippy/pull/13263) +* Moved [`empty_line_after_doc_comments`] to `suspicious` (From `nursery`, now warn-by-default) + [#13091](https://github.com/rust-lang/rust-clippy/pull/13091) +* Moved [`empty_line_after_outer_attr`] to `suspicious` (From `nursery`, now warn-by-default) + [#13091](https://github.com/rust-lang/rust-clippy/pull/13091) + +### Enhancements + +* [`missing_panics_doc`]: No longer lints in const environments + [#13382](https://github.com/rust-lang/rust-clippy/pull/13382) ## Rust 1.82 -Current stable, released 2024-10-17 +Released 2024-10-17 [View all 108 merged pull requests](https://github.com/rust-lang/rust-clippy/pulls?q=merged%3A2024-07-11T20%3A12%3A07Z..2024-08-24T20%3A55%3A35Z+base%3Amaster) @@ -5441,6 +5486,7 @@ Released 2018-09-13 [`disallowed_type`]: https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_type [`disallowed_types`]: https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_types [`diverging_sub_expression`]: https://rust-lang.github.io/rust-clippy/master/index.html#diverging_sub_expression +[`doc_include_without_cfg`]: https://rust-lang.github.io/rust-clippy/master/index.html#doc_include_without_cfg [`doc_lazy_continuation`]: https://rust-lang.github.io/rust-clippy/master/index.html#doc_lazy_continuation [`doc_link_with_quotes`]: https://rust-lang.github.io/rust-clippy/master/index.html#doc_link_with_quotes [`doc_markdown`]: https://rust-lang.github.io/rust-clippy/master/index.html#doc_markdown diff --git a/Cargo.toml b/Cargo.toml index 50a2afbfc07..77cb0006ff8 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -1,6 +1,8 @@ [package] name = "clippy" -version = "0.1.84" +# begin autogenerated version +version = "0.1.85" +# end autogenerated version description = "A bunch of helpful lints to avoid common pitfalls in Rust" repository = "https://github.com/rust-lang/rust-clippy" readme = "README.md" @@ -27,7 +29,7 @@ rustc_tools_util = "0.4.0" tempfile = { version = "3.3", optional = true } termize = "0.1" color-print = "0.3.4" -anstream = "0.6.0" +anstream = "0.6.18" [dev-dependencies] cargo_metadata = "0.18.1" diff --git a/book/src/SUMMARY.md b/book/src/SUMMARY.md index be13fcbe260..19328fdd3cd 100644 --- a/book/src/SUMMARY.md +++ b/book/src/SUMMARY.md @@ -7,6 +7,7 @@ - [Configuration](configuration.md) - [Lint Configuration](lint_configuration.md) - [Clippy's Lints](lints.md) +- [Attributes for Crate Authors](attribs.md) - [Continuous Integration](continuous_integration/README.md) - [GitHub Actions](continuous_integration/github_actions.md) - [GitLab CI](continuous_integration/gitlab.md) diff --git a/book/src/attribs.md b/book/src/attribs.md new file mode 100644 index 00000000000..cf99497bc0f --- /dev/null +++ b/book/src/attribs.md @@ -0,0 +1,53 @@ +# Attributes for Crate Authors + +In some cases it is possible to extend Clippy coverage to 3rd party libraries. +To do this, Clippy provides attributes that can be applied to items in the 3rd party crate. + +## `#[clippy::format_args]` + +_Available since Clippy v1.84_ + +This attribute can be added to a macro that supports `format!`, `println!`, or similar syntax. +It tells Clippy that the macro is a formatting macro, and that the arguments to the macro +should be linted as if they were arguments to `format!`. Any lint that would apply to a +`format!` call will also apply to the macro call. The macro may have additional arguments +before the format string, and these will be ignored. + +### Example + +```rust +/// A macro that prints a message if a condition is true. +#[macro_export] +#[clippy::format_args] +macro_rules! print_if { + ($condition:expr, $($args:tt)+) => {{ + if $condition { + println!($($args)+) + } + }}; +} +``` + +## `#[clippy::has_significant_drop]` + +_Available since Clippy v1.60_ + +The `clippy::has_significant_drop` attribute can be added to types whose Drop impls have an important side effect, +such as unlocking a mutex, making it important for users to be able to accurately understand their lifetimes. +When a temporary is returned in a function call in a match scrutinee, its lifetime lasts until the end of the match +block, which may be surprising. + +### Example + +```rust +#[clippy::has_significant_drop] +struct CounterWrapper<'a> { + counter: &'a Counter, +} + +impl<'a> Drop for CounterWrapper<'a> { + fn drop(&mut self) { + self.counter.i.fetch_sub(1, Ordering::Relaxed); + } +} +``` diff --git a/book/src/development/adding_lints.md b/book/src/development/adding_lints.md index 963e02e5c16..c07568697d0 100644 --- a/book/src/development/adding_lints.md +++ b/book/src/development/adding_lints.md @@ -438,7 +438,7 @@ need to ensure that the MSRV configured for the project is >= the MSRV of the required Rust feature. If multiple features are required, just use the one with a lower MSRV. -First, add an MSRV alias for the required feature in [`clippy_config::msrvs`]. +First, add an MSRV alias for the required feature in [`clippy_utils::msrvs`]. This can be accessed later as `msrvs::STR_STRIP_PREFIX`, for example. ```rust @@ -517,7 +517,7 @@ define_Conf! { } ``` -[`clippy_config::msrvs`]: https://doc.rust-lang.org/nightly/nightly-rustc/clippy_config/msrvs/index.html +[`clippy_utils::msrvs`]: https://doc.rust-lang.org/nightly/nightly-rustc/clippy_config/msrvs/index.html Afterwards update the documentation for the book as described in [Adding configuration to a lint](#adding-configuration-to-a-lint). diff --git a/book/src/lint_configuration.md b/book/src/lint_configuration.md index 670b5cbef82..275d125096e 100644 --- a/book/src/lint_configuration.md +++ b/book/src/lint_configuration.md @@ -895,7 +895,7 @@ The order of associated items in traits. ## `trivial-copy-size-limit` The maximum size (in bytes) to consider a `Copy` type for passing by value instead of by -reference. By default there is no limit +reference. **Default Value:** `target_pointer_width * 2` diff --git a/clippy_config/Cargo.toml b/clippy_config/Cargo.toml index d21df202dca..3f18a0bc7d2 100644 --- a/clippy_config/Cargo.toml +++ b/clippy_config/Cargo.toml @@ -1,11 +1,15 @@ [package] name = "clippy_config" -version = "0.1.84" +# begin autogenerated version +version = "0.1.85" +# end autogenerated version edition = "2021" +publish = false # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html [dependencies] +clippy_utils = { path = "../clippy_utils" } itertools = "0.12" serde = { version = "1.0", features = ["derive"] } toml = "0.7.3" diff --git a/clippy_config/src/conf.rs b/clippy_config/src/conf.rs index 600d5b6e2c8..41b56b45d9a 100644 --- a/clippy_config/src/conf.rs +++ b/clippy_config/src/conf.rs @@ -1,10 +1,10 @@ use crate::ClippyConfiguration; -use crate::msrvs::Msrv; use crate::types::{ DisallowedPath, MacroMatcher, MatchLintBehaviour, PubUnderscoreFieldsBehaviour, Rename, SourceItemOrdering, SourceItemOrderingCategory, SourceItemOrderingModuleItemGroupings, SourceItemOrderingModuleItemKind, SourceItemOrderingTraitAssocItemKind, SourceItemOrderingTraitAssocItemKinds, }; +use clippy_utils::msrvs::Msrv; use rustc_errors::Applicability; use rustc_session::Session; use rustc_span::edit_distance::edit_distance; @@ -181,7 +181,7 @@ macro_rules! define_Conf { )*) => { /// Clippy lint configuration pub struct Conf { - $($(#[doc = $doc])+ pub $name: $ty,)* + $($(#[cfg_attr(doc, doc = $doc)])+ pub $name: $ty,)* } mod defaults { @@ -678,7 +678,7 @@ define_Conf! { #[lints(arbitrary_source_item_ordering)] trait_assoc_item_kinds_order: SourceItemOrderingTraitAssocItemKinds = DEFAULT_TRAIT_ASSOC_ITEM_KINDS_ORDER.into(), /// The maximum size (in bytes) to consider a `Copy` type for passing by value instead of by - /// reference. By default there is no limit + /// reference. #[default_text = "target_pointer_width * 2"] #[lints(trivially_copy_pass_by_ref)] trivial_copy_size_limit: Option = None, diff --git a/clippy_config/src/lib.rs b/clippy_config/src/lib.rs index 1c3f32c2514..5d6e8b87516 100644 --- a/clippy_config/src/lib.rs +++ b/clippy_config/src/lib.rs @@ -13,18 +13,14 @@ rustc::untranslatable_diagnostic )] -extern crate rustc_ast; -extern crate rustc_attr; -#[allow(unused_extern_crates)] -extern crate rustc_driver; extern crate rustc_errors; +extern crate rustc_hir; +extern crate rustc_middle; extern crate rustc_session; extern crate rustc_span; -extern crate smallvec; mod conf; mod metadata; -pub mod msrvs; pub mod types; pub use conf::{Conf, get_configuration_metadata, lookup_conf_file, sanitize_explanation}; diff --git a/clippy_config/src/msrvs.rs b/clippy_config/src/msrvs.rs deleted file mode 100644 index 764ca8fb50a..00000000000 --- a/clippy_config/src/msrvs.rs +++ /dev/null @@ -1,165 +0,0 @@ -use rustc_ast::Attribute; -use rustc_attr::parse_version; -use rustc_session::{RustcVersion, Session}; -use rustc_span::{Symbol, sym}; -use serde::Deserialize; -use smallvec::{SmallVec, smallvec}; -use std::fmt; - -macro_rules! msrv_aliases { - ($($major:literal,$minor:literal,$patch:literal { - $($name:ident),* $(,)? - })*) => { - $($( - pub const $name: RustcVersion = RustcVersion { major: $major, minor :$minor, patch: $patch }; - )*)* - }; -} - -// names may refer to stabilized feature flags or library items -msrv_aliases! { - 1,83,0 { CONST_EXTERN_FN, CONST_FLOAT_BITS_CONV, CONST_FLOAT_CLASSIFY } - 1,82,0 { IS_NONE_OR, REPEAT_N } - 1,81,0 { LINT_REASONS_STABILIZATION } - 1,80,0 { BOX_INTO_ITER} - 1,77,0 { C_STR_LITERALS } - 1,76,0 { PTR_FROM_REF, OPTION_RESULT_INSPECT } - 1,73,0 { MANUAL_DIV_CEIL } - 1,71,0 { TUPLE_ARRAY_CONVERSIONS, BUILD_HASHER_HASH_ONE } - 1,70,0 { OPTION_RESULT_IS_VARIANT_AND, BINARY_HEAP_RETAIN } - 1,68,0 { PATH_MAIN_SEPARATOR_STR } - 1,65,0 { LET_ELSE, POINTER_CAST_CONSTNESS } - 1,63,0 { CLONE_INTO } - 1,62,0 { BOOL_THEN_SOME, DEFAULT_ENUM_ATTRIBUTE, CONST_EXTERN_C_FN } - 1,59,0 { THREAD_LOCAL_CONST_INIT } - 1,58,0 { FORMAT_ARGS_CAPTURE, PATTERN_TRAIT_CHAR_ARRAY, CONST_RAW_PTR_DEREF } - 1,56,0 { CONST_FN_UNION } - 1,55,0 { SEEK_REWIND } - 1,54,0 { INTO_KEYS } - 1,53,0 { OR_PATTERNS, MANUAL_BITS, BTREE_MAP_RETAIN, BTREE_SET_RETAIN, ARRAY_INTO_ITERATOR } - 1,52,0 { STR_SPLIT_ONCE, REM_EUCLID_CONST } - 1,51,0 { BORROW_AS_PTR, SEEK_FROM_CURRENT, UNSIGNED_ABS } - 1,50,0 { BOOL_THEN, CLAMP } - 1,47,0 { TAU, IS_ASCII_DIGIT_CONST, ARRAY_IMPL_ANY_LEN, SATURATING_SUB_CONST } - 1,46,0 { CONST_IF_MATCH } - 1,45,0 { STR_STRIP_PREFIX } - 1,43,0 { LOG2_10, LOG10_2, NUMERIC_ASSOCIATED_CONSTANTS } - 1,42,0 { MATCHES_MACRO, SLICE_PATTERNS, PTR_SLICE_RAW_PARTS } - 1,41,0 { RE_REBALANCING_COHERENCE, RESULT_MAP_OR_ELSE } - 1,40,0 { MEM_TAKE, NON_EXHAUSTIVE, OPTION_AS_DEREF } - 1,38,0 { POINTER_CAST, REM_EUCLID } - 1,37,0 { TYPE_ALIAS_ENUM_VARIANTS } - 1,36,0 { ITERATOR_COPIED } - 1,35,0 { OPTION_COPIED, RANGE_CONTAINS } - 1,34,0 { TRY_FROM } - 1,33,0 { UNDERSCORE_IMPORTS } - 1,30,0 { ITERATOR_FIND_MAP, TOOL_ATTRIBUTES } - 1,29,0 { ITER_FLATTEN } - 1,28,0 { FROM_BOOL, REPEAT_WITH } - 1,27,0 { ITERATOR_TRY_FOLD } - 1,26,0 { RANGE_INCLUSIVE, STRING_RETAIN } - 1,24,0 { IS_ASCII_DIGIT } - 1,18,0 { HASH_MAP_RETAIN, HASH_SET_RETAIN } - 1,17,0 { FIELD_INIT_SHORTHAND, STATIC_IN_CONST, EXPECT_ERR } - 1,16,0 { STR_REPEAT } - 1,15,0 { MAYBE_BOUND_IN_WHERE } -} - -/// Tracks the current MSRV from `clippy.toml`, `Cargo.toml` or set via `#[clippy::msrv]` -#[derive(Debug, Clone)] -pub struct Msrv { - stack: SmallVec<[RustcVersion; 2]>, -} - -impl fmt::Display for Msrv { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - if let Some(msrv) = self.current() { - write!(f, "{msrv}") - } else { - f.write_str("1.0.0") - } - } -} - -impl<'de> Deserialize<'de> for Msrv { - fn deserialize(deserializer: D) -> Result - where - D: serde::Deserializer<'de>, - { - let v = String::deserialize(deserializer)?; - parse_version(Symbol::intern(&v)) - .map(|v| Msrv { stack: smallvec![v] }) - .ok_or_else(|| serde::de::Error::custom("not a valid Rust version")) - } -} - -impl Msrv { - pub fn empty() -> Msrv { - Msrv { stack: SmallVec::new() } - } - - pub fn read_cargo(&mut self, sess: &Session) { - let cargo_msrv = std::env::var("CARGO_PKG_RUST_VERSION") - .ok() - .and_then(|v| parse_version(Symbol::intern(&v))); - - match (self.current(), cargo_msrv) { - (None, Some(cargo_msrv)) => self.stack = smallvec![cargo_msrv], - (Some(clippy_msrv), Some(cargo_msrv)) => { - if clippy_msrv != cargo_msrv { - sess.dcx().warn(format!( - "the MSRV in `clippy.toml` and `Cargo.toml` differ; using `{clippy_msrv}` from `clippy.toml`" - )); - } - }, - _ => {}, - } - } - - pub fn current(&self) -> Option { - self.stack.last().copied() - } - - pub fn meets(&self, required: RustcVersion) -> bool { - self.current().map_or(true, |msrv| msrv >= required) - } - - fn parse_attr(sess: &Session, attrs: &[Attribute]) -> Option { - let sym_msrv = Symbol::intern("msrv"); - let mut msrv_attrs = attrs.iter().filter(|attr| attr.path_matches(&[sym::clippy, sym_msrv])); - - if let Some(msrv_attr) = msrv_attrs.next() { - if let Some(duplicate) = msrv_attrs.last() { - sess.dcx() - .struct_span_err(duplicate.span, "`clippy::msrv` is defined multiple times") - .with_span_note(msrv_attr.span, "first definition found here") - .emit(); - } - - if let Some(msrv) = msrv_attr.value_str() { - if let Some(version) = parse_version(msrv) { - return Some(version); - } - - sess.dcx() - .span_err(msrv_attr.span, format!("`{msrv}` is not a valid Rust version")); - } else { - sess.dcx().span_err(msrv_attr.span, "bad clippy attribute"); - } - } - - None - } - - pub fn check_attributes(&mut self, sess: &Session, attrs: &[Attribute]) { - if let Some(version) = Self::parse_attr(sess, attrs) { - self.stack.push(version); - } - } - - pub fn check_attributes_post(&mut self, sess: &Session, attrs: &[Attribute]) { - if Self::parse_attr(sess, attrs).is_some() { - self.stack.pop(); - } - } -} diff --git a/clippy_config/src/types.rs b/clippy_config/src/types.rs index fe576424148..c949db9109d 100644 --- a/clippy_config/src/types.rs +++ b/clippy_config/src/types.rs @@ -1,3 +1,6 @@ +use clippy_utils::def_path_def_ids; +use rustc_hir::def_id::DefIdMap; +use rustc_middle::ty::TyCtxt; use serde::de::{self, Deserializer, Visitor}; use serde::{Deserialize, Serialize, ser}; use std::collections::HashMap; @@ -31,6 +34,18 @@ impl DisallowedPath { } } +/// Creates a map of disallowed items to the reason they were disallowed. +pub fn create_disallowed_map( + tcx: TyCtxt<'_>, + disallowed: &'static [DisallowedPath], +) -> DefIdMap<(&'static str, Option<&'static str>)> { + disallowed + .iter() + .map(|x| (x.path(), x.path().split("::").collect::>(), x.reason())) + .flat_map(|(name, path, reason)| def_path_def_ids(tcx, &path).map(move |id| (id, (name, reason)))) + .collect() +} + #[derive(Clone, Copy, Debug, PartialEq, Eq, Deserialize, Serialize)] pub enum MatchLintBehaviour { AllTypes, diff --git a/clippy_dev/Cargo.toml b/clippy_dev/Cargo.toml index 952a8711fb4..d3a103eaf4c 100644 --- a/clippy_dev/Cargo.toml +++ b/clippy_dev/Cargo.toml @@ -6,6 +6,7 @@ edition = "2021" [dependencies] aho-corasick = "1.0" +chrono = { version = "0.4.38", default-features = false, features = ["clock"] } clap = { version = "4.4", features = ["derive"] } indoc = "1.0" itertools = "0.12" diff --git a/clippy_dev/src/dogfood.rs b/clippy_dev/src/dogfood.rs index a0d57f5ab48..75a4cbd2f92 100644 --- a/clippy_dev/src/dogfood.rs +++ b/clippy_dev/src/dogfood.rs @@ -1,4 +1,4 @@ -use crate::{clippy_project_root, exit_if_err}; +use crate::utils::{clippy_project_root, exit_if_err}; use std::process::Command; /// # Panics diff --git a/clippy_dev/src/fmt.rs b/clippy_dev/src/fmt.rs index 8c61c35533c..c6673859282 100644 --- a/clippy_dev/src/fmt.rs +++ b/clippy_dev/src/fmt.rs @@ -1,4 +1,4 @@ -use crate::clippy_project_root; +use crate::utils::clippy_project_root; use itertools::Itertools; use rustc_lexer::{TokenKind, tokenize}; use shell_escape::escape; diff --git a/clippy_dev/src/lib.rs b/clippy_dev/src/lib.rs index ad385d5fbd2..9280369c23b 100644 --- a/clippy_dev/src/lib.rs +++ b/clippy_dev/src/lib.rs @@ -14,69 +14,13 @@ extern crate rustc_driver; extern crate rustc_lexer; -use std::io; -use std::path::PathBuf; -use std::process::{self, ExitStatus}; - pub mod dogfood; pub mod fmt; pub mod lint; pub mod new_lint; +pub mod release; pub mod serve; pub mod setup; +pub mod sync; pub mod update_lints; - -#[cfg(not(windows))] -static CARGO_CLIPPY_EXE: &str = "cargo-clippy"; -#[cfg(windows)] -static CARGO_CLIPPY_EXE: &str = "cargo-clippy.exe"; - -/// Returns the path to the `cargo-clippy` binary -/// -/// # Panics -/// -/// Panics if the path of current executable could not be retrieved. -#[must_use] -pub fn cargo_clippy_path() -> PathBuf { - let mut path = std::env::current_exe().expect("failed to get current executable name"); - path.set_file_name(CARGO_CLIPPY_EXE); - path -} - -/// Returns the path to the Clippy project directory -/// -/// # Panics -/// -/// Panics if the current directory could not be retrieved, there was an error reading any of the -/// Cargo.toml files or ancestor directory is the clippy root directory -#[must_use] -pub fn clippy_project_root() -> PathBuf { - let current_dir = std::env::current_dir().unwrap(); - for path in current_dir.ancestors() { - let result = std::fs::read_to_string(path.join("Cargo.toml")); - if let Err(err) = &result { - if err.kind() == io::ErrorKind::NotFound { - continue; - } - } - - let content = result.unwrap(); - if content.contains("[package]\nname = \"clippy\"") { - return path.to_path_buf(); - } - } - panic!("error: Can't determine root of project. Please run inside a Clippy working dir."); -} - -/// # Panics -/// Panics if given command result was failed. -pub fn exit_if_err(status: io::Result) { - match status.expect("failed to run command").code() { - Some(0) => {}, - Some(n) => process::exit(n), - None => { - eprintln!("Killed by signal"); - process::exit(1); - }, - } -} +pub mod utils; diff --git a/clippy_dev/src/lint.rs b/clippy_dev/src/lint.rs index f308f5dfdfd..125195397e6 100644 --- a/clippy_dev/src/lint.rs +++ b/clippy_dev/src/lint.rs @@ -1,4 +1,4 @@ -use crate::{cargo_clippy_path, exit_if_err}; +use crate::utils::{cargo_clippy_path, exit_if_err}; use std::process::{self, Command}; use std::{env, fs}; diff --git a/clippy_dev/src/main.rs b/clippy_dev/src/main.rs index fc15913354c..56ed60256f1 100644 --- a/clippy_dev/src/main.rs +++ b/clippy_dev/src/main.rs @@ -3,7 +3,7 @@ #![warn(rust_2018_idioms, unused_lifetimes)] use clap::{Args, Parser, Subcommand}; -use clippy_dev::{dogfood, fmt, lint, new_lint, serve, setup, update_lints}; +use clippy_dev::{dogfood, fmt, lint, new_lint, release, serve, setup, sync, update_lints, utils}; use std::convert::Infallible; fn main() { @@ -23,9 +23,9 @@ fn main() { if print_only { update_lints::print_lints(); } else if check { - update_lints::update(update_lints::UpdateMode::Check); + update_lints::update(utils::UpdateMode::Check); } else { - update_lints::update(update_lints::UpdateMode::Change); + update_lints::update(utils::UpdateMode::Change); } }, DevCommand::NewLint { @@ -35,7 +35,7 @@ fn main() { r#type, msrv, } => match new_lint::create(&pass, &name, &category, r#type.as_deref(), msrv) { - Ok(()) => update_lints::update(update_lints::UpdateMode::Change), + Ok(()) => update_lints::update(utils::UpdateMode::Change), Err(e) => eprintln!("Unable to create lint: {e}"), }, DevCommand::Setup(SetupCommand { subcommand }) => match subcommand { @@ -75,6 +75,12 @@ fn main() { uplift, } => update_lints::rename(&old_name, new_name.as_ref().unwrap_or(&old_name), uplift), DevCommand::Deprecate { name, reason } => update_lints::deprecate(&name, &reason), + DevCommand::Sync(SyncCommand { subcommand }) => match subcommand { + SyncSubcommand::UpdateNightly => sync::update_nightly(), + }, + DevCommand::Release(ReleaseCommand { subcommand }) => match subcommand { + ReleaseSubcommand::BumpVersion => release::bump_version(), + }, } } @@ -225,6 +231,10 @@ enum DevCommand { /// The reason for deprecation reason: String, }, + /// Sync between the rust repo and the Clippy repo + Sync(SyncCommand), + /// Manage Clippy releases + Release(ReleaseCommand), } #[derive(Args)] @@ -291,3 +301,29 @@ enum RemoveSubcommand { /// Remove the tasks added with 'cargo dev setup vscode-tasks' VscodeTasks, } + +#[derive(Args)] +struct SyncCommand { + #[command(subcommand)] + subcommand: SyncSubcommand, +} + +#[derive(Subcommand)] +enum SyncSubcommand { + #[command(name = "update_nightly")] + /// Update nightly version in rust-toolchain and `clippy_utils` + UpdateNightly, +} + +#[derive(Args)] +struct ReleaseCommand { + #[command(subcommand)] + subcommand: ReleaseSubcommand, +} + +#[derive(Subcommand)] +enum ReleaseSubcommand { + #[command(name = "bump_version")] + /// Bump the version in the Cargo.toml files + BumpVersion, +} diff --git a/clippy_dev/src/new_lint.rs b/clippy_dev/src/new_lint.rs index e15ba339717..24d1a53266a 100644 --- a/clippy_dev/src/new_lint.rs +++ b/clippy_dev/src/new_lint.rs @@ -1,4 +1,4 @@ -use crate::clippy_project_root; +use crate::utils::{clippy_project_root, clippy_version}; use indoc::{formatdoc, writedoc}; use std::fmt; use std::fmt::Write as _; @@ -186,23 +186,8 @@ fn to_camel_case(name: &str) -> String { } pub(crate) fn get_stabilization_version() -> String { - fn parse_manifest(contents: &str) -> Option { - let version = contents - .lines() - .filter_map(|l| l.split_once('=')) - .find_map(|(k, v)| (k.trim() == "version").then(|| v.trim()))?; - let Some(("0", version)) = version.get(1..version.len() - 1)?.split_once('.') else { - return None; - }; - let (minor, patch) = version.split_once('.')?; - Some(format!( - "{}.{}.0", - minor.parse::().ok()?, - patch.parse::().ok()? - )) - } - let contents = fs::read_to_string("Cargo.toml").expect("Unable to read `Cargo.toml`"); - parse_manifest(&contents).expect("Unable to find package version in `Cargo.toml`") + let (minor, patch) = clippy_version(); + format!("{minor}.{patch}.0") } fn get_test_file_contents(lint_name: &str, msrv: bool) -> String { @@ -273,7 +258,7 @@ fn get_lint_file_contents(lint: &LintData<'_>, enable_msrv: bool) -> String { result.push_str(&if enable_msrv { formatdoc!( r" - use clippy_config::msrvs::{{self, Msrv}}; + use clippy_utils::msrvs::{{self, Msrv}}; use clippy_config::Conf; {pass_import} use rustc_lint::{{{context_import}, {pass_type}, LintContext}}; @@ -399,7 +384,7 @@ fn create_lint_for_ty(lint: &LintData<'_>, enable_msrv: bool, ty: &str) -> io::R let _: fmt::Result = writedoc!( lint_file_contents, r#" - use clippy_config::msrvs::{{self, Msrv}}; + use clippy_utils::msrvs::{{self, Msrv}}; use rustc_lint::{{{context_import}, LintContext}}; use super::{name_upper}; diff --git a/clippy_dev/src/release.rs b/clippy_dev/src/release.rs new file mode 100644 index 00000000000..ac755168701 --- /dev/null +++ b/clippy_dev/src/release.rs @@ -0,0 +1,27 @@ +use std::fmt::Write; +use std::path::Path; + +use crate::utils::{UpdateMode, clippy_version, replace_region_in_file}; + +const CARGO_TOML_FILES: [&str; 4] = [ + "clippy_config/Cargo.toml", + "clippy_lints/Cargo.toml", + "clippy_utils/Cargo.toml", + "Cargo.toml", +]; + +pub fn bump_version() { + let (minor, mut patch) = clippy_version(); + patch += 1; + for file in &CARGO_TOML_FILES { + replace_region_in_file( + UpdateMode::Change, + Path::new(file), + "# begin autogenerated version\n", + "# end autogenerated version", + |res| { + writeln!(res, "version = \"0.{minor}.{patch}\"").unwrap(); + }, + ); + } +} diff --git a/clippy_dev/src/sync.rs b/clippy_dev/src/sync.rs new file mode 100644 index 00000000000..3522d182e90 --- /dev/null +++ b/clippy_dev/src/sync.rs @@ -0,0 +1,33 @@ +use std::fmt::Write; +use std::path::Path; + +use chrono::offset::Utc; + +use crate::utils::{UpdateMode, replace_region_in_file}; + +pub fn update_nightly() { + // Update rust-toolchain nightly version + let date = Utc::now().format("%Y-%m-%d").to_string(); + replace_region_in_file( + UpdateMode::Change, + Path::new("rust-toolchain"), + "# begin autogenerated nightly\n", + "# end autogenerated nightly", + |res| { + writeln!(res, "channel = \"nightly-{date}\"").unwrap(); + }, + ); + + // Update clippy_utils nightly version + replace_region_in_file( + UpdateMode::Change, + Path::new("clippy_utils/README.md"), + "\n", + "", + |res| { + writeln!(res, "```").unwrap(); + writeln!(res, "nightly-{date}").unwrap(); + writeln!(res, "```").unwrap(); + }, + ); +} diff --git a/clippy_dev/src/update_lints.rs b/clippy_dev/src/update_lints.rs index 795456ad3c5..612d1c0ae13 100644 --- a/clippy_dev/src/update_lints.rs +++ b/clippy_dev/src/update_lints.rs @@ -1,4 +1,4 @@ -use crate::clippy_project_root; +use crate::utils::{UpdateMode, clippy_project_root, exit_with_failure, replace_region_in_file}; use aho_corasick::AhoCorasickBuilder; use itertools::Itertools; use rustc_lexer::{LiteralKind, TokenKind, tokenize, unescape}; @@ -17,12 +17,6 @@ const GENERATED_FILE_COMMENT: &str = "// This file was generated by `cargo dev u const DOCS_LINK: &str = "https://rust-lang.github.io/rust-clippy/master/index.html"; -#[derive(Clone, Copy, PartialEq, Eq)] -pub enum UpdateMode { - Check, - Change, -} - /// Runs the `update_lints` command. /// /// This updates various generated values from the lint source code. @@ -511,14 +505,6 @@ fn process_file(path: impl AsRef, update_mode: UpdateMode, content: &str) } } -fn exit_with_failure() { - println!( - "Not all lints defined properly. \ - Please run `cargo dev update_lints` to make sure all lints are defined properly." - ); - std::process::exit(1); -} - /// Lint data parsed from the Clippy source code. #[derive(Clone, PartialEq, Eq, Debug)] struct Lint { @@ -851,61 +837,6 @@ fn remove_line_splices(s: &str) -> String { }); res } - -/// Replaces a region in a file delimited by two lines matching regexes. -/// -/// `path` is the relative path to the file on which you want to perform the replacement. -/// -/// See `replace_region_in_text` for documentation of the other options. -/// -/// # Panics -/// -/// Panics if the path could not read or then written -fn replace_region_in_file( - update_mode: UpdateMode, - path: &Path, - start: &str, - end: &str, - write_replacement: impl FnMut(&mut String), -) { - let contents = fs::read_to_string(path).unwrap_or_else(|e| panic!("Cannot read from `{}`: {e}", path.display())); - let new_contents = match replace_region_in_text(&contents, start, end, write_replacement) { - Ok(x) => x, - Err(delim) => panic!("Couldn't find `{delim}` in file `{}`", path.display()), - }; - - match update_mode { - UpdateMode::Check if contents != new_contents => exit_with_failure(), - UpdateMode::Check => (), - UpdateMode::Change => { - if let Err(e) = fs::write(path, new_contents.as_bytes()) { - panic!("Cannot write to `{}`: {e}", path.display()); - } - }, - } -} - -/// Replaces a region in a text delimited by two strings. Returns the new text if both delimiters -/// were found, or the missing delimiter if not. -fn replace_region_in_text<'a>( - text: &str, - start: &'a str, - end: &'a str, - mut write_replacement: impl FnMut(&mut String), -) -> Result { - let (text_start, rest) = text.split_once(start).ok_or(start)?; - let (_, text_end) = rest.split_once(end).ok_or(end)?; - - let mut res = String::with_capacity(text.len() + 4096); - res.push_str(text_start); - res.push_str(start); - write_replacement(&mut res); - res.push_str(end); - res.push_str(text_end); - - Ok(res) -} - fn try_rename_file(old_name: &Path, new_name: &Path) -> bool { match OpenOptions::new().create_new(true).write(true).open(new_name) { Ok(file) => drop(file), diff --git a/clippy_dev/src/utils.rs b/clippy_dev/src/utils.rs new file mode 100644 index 00000000000..b87fcca13b1 --- /dev/null +++ b/clippy_dev/src/utils.rs @@ -0,0 +1,142 @@ +use std::path::{Path, PathBuf}; +use std::process::{self, ExitStatus}; +use std::{fs, io}; + +#[cfg(not(windows))] +static CARGO_CLIPPY_EXE: &str = "cargo-clippy"; +#[cfg(windows)] +static CARGO_CLIPPY_EXE: &str = "cargo-clippy.exe"; + +/// Returns the path to the `cargo-clippy` binary +/// +/// # Panics +/// +/// Panics if the path of current executable could not be retrieved. +#[must_use] +pub fn cargo_clippy_path() -> PathBuf { + let mut path = std::env::current_exe().expect("failed to get current executable name"); + path.set_file_name(CARGO_CLIPPY_EXE); + path +} + +/// Returns the path to the Clippy project directory +/// +/// # Panics +/// +/// Panics if the current directory could not be retrieved, there was an error reading any of the +/// Cargo.toml files or ancestor directory is the clippy root directory +#[must_use] +pub fn clippy_project_root() -> PathBuf { + let current_dir = std::env::current_dir().unwrap(); + for path in current_dir.ancestors() { + let result = fs::read_to_string(path.join("Cargo.toml")); + if let Err(err) = &result { + if err.kind() == io::ErrorKind::NotFound { + continue; + } + } + + let content = result.unwrap(); + if content.contains("[package]\nname = \"clippy\"") { + return path.to_path_buf(); + } + } + panic!("error: Can't determine root of project. Please run inside a Clippy working dir."); +} + +/// # Panics +/// Panics if given command result was failed. +pub fn exit_if_err(status: io::Result) { + match status.expect("failed to run command").code() { + Some(0) => {}, + Some(n) => process::exit(n), + None => { + eprintln!("Killed by signal"); + process::exit(1); + }, + } +} + +pub(crate) fn clippy_version() -> (u32, u32) { + fn parse_manifest(contents: &str) -> Option<(u32, u32)> { + let version = contents + .lines() + .filter_map(|l| l.split_once('=')) + .find_map(|(k, v)| (k.trim() == "version").then(|| v.trim()))?; + let Some(("0", version)) = version.get(1..version.len() - 1)?.split_once('.') else { + return None; + }; + let (minor, patch) = version.split_once('.')?; + Some((minor.parse().ok()?, patch.parse().ok()?)) + } + let contents = fs::read_to_string("Cargo.toml").expect("Unable to read `Cargo.toml`"); + parse_manifest(&contents).expect("Unable to find package version in `Cargo.toml`") +} + +#[derive(Clone, Copy, PartialEq, Eq)] +pub enum UpdateMode { + Check, + Change, +} + +pub(crate) fn exit_with_failure() { + println!( + "Not all lints defined properly. \ + Please run `cargo dev update_lints` to make sure all lints are defined properly." + ); + process::exit(1); +} + +/// Replaces a region in a file delimited by two lines matching regexes. +/// +/// `path` is the relative path to the file on which you want to perform the replacement. +/// +/// See `replace_region_in_text` for documentation of the other options. +/// +/// # Panics +/// +/// Panics if the path could not read or then written +pub(crate) fn replace_region_in_file( + update_mode: UpdateMode, + path: &Path, + start: &str, + end: &str, + write_replacement: impl FnMut(&mut String), +) { + let contents = fs::read_to_string(path).unwrap_or_else(|e| panic!("Cannot read from `{}`: {e}", path.display())); + let new_contents = match replace_region_in_text(&contents, start, end, write_replacement) { + Ok(x) => x, + Err(delim) => panic!("Couldn't find `{delim}` in file `{}`", path.display()), + }; + + match update_mode { + UpdateMode::Check if contents != new_contents => exit_with_failure(), + UpdateMode::Check => (), + UpdateMode::Change => { + if let Err(e) = fs::write(path, new_contents.as_bytes()) { + panic!("Cannot write to `{}`: {e}", path.display()); + } + }, + } +} + +/// Replaces a region in a text delimited by two strings. Returns the new text if both delimiters +/// were found, or the missing delimiter if not. +pub(crate) fn replace_region_in_text<'a>( + text: &str, + start: &'a str, + end: &'a str, + mut write_replacement: impl FnMut(&mut String), +) -> Result { + let (text_start, rest) = text.split_once(start).ok_or(start)?; + let (_, text_end) = rest.split_once(end).ok_or(end)?; + + let mut res = String::with_capacity(text.len() + 4096); + res.push_str(text_start); + res.push_str(start); + write_replacement(&mut res); + res.push_str(end); + res.push_str(text_end); + + Ok(res) +} diff --git a/clippy_lints/Cargo.toml b/clippy_lints/Cargo.toml index 63ea6faf60d..c1f8e82f698 100644 --- a/clippy_lints/Cargo.toml +++ b/clippy_lints/Cargo.toml @@ -1,6 +1,8 @@ [package] name = "clippy_lints" -version = "0.1.84" +# begin autogenerated version +version = "0.1.85" +# end autogenerated version description = "A bunch of helpful lints to avoid common pitfalls in Rust" repository = "https://github.com/rust-lang/rust-clippy" readme = "README.md" diff --git a/clippy_lints/src/almost_complete_range.rs b/clippy_lints/src/almost_complete_range.rs index 370f0c482fd..2af5178920d 100644 --- a/clippy_lints/src/almost_complete_range.rs +++ b/clippy_lints/src/almost_complete_range.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::{trim_span, walk_span_to_context}; use rustc_ast::ast::{Expr, ExprKind, LitKind, Pat, PatKind, RangeEnd, RangeLimits}; use rustc_errors::Applicability; diff --git a/clippy_lints/src/approx_const.rs b/clippy_lints/src/approx_const.rs index 4f8f091a095..ebd35fd2b27 100644 --- a/clippy_lints/src/approx_const.rs +++ b/clippy_lints/src/approx_const.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_help; +use clippy_utils::msrvs::{self, Msrv}; use rustc_ast::ast::{FloatTy, LitFloatType, LitKind}; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; @@ -91,7 +91,7 @@ impl ApproxConstant { let s = s.as_str(); if s.parse::().is_ok() { for &(constant, name, min_digits, msrv) in &KNOWN_CONSTS { - if is_approx_const(constant, s, min_digits) && msrv.map_or(true, |msrv| self.msrv.meets(msrv)) { + if is_approx_const(constant, s, min_digits) && msrv.is_none_or(|msrv| self.msrv.meets(msrv)) { span_lint_and_help( cx, APPROX_CONSTANT, diff --git a/clippy_lints/src/assigning_clones.rs b/clippy_lints/src/assigning_clones.rs index 00626a37ef8..c8dd77d9578 100644 --- a/clippy_lints/src/assigning_clones.rs +++ b/clippy_lints/src/assigning_clones.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::mir::{PossibleBorrowerMap, enclosing_mir}; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::sugg::Sugg; use clippy_utils::{is_diag_trait_item, is_in_test, last_path_segment, local_is_initialized, path_to_local}; use rustc_errors::Applicability; @@ -100,13 +100,13 @@ impl<'tcx> LateLintPass<'tcx> for AssigningClones { // TODO: This check currently bails if the local variable has no initializer. // That is overly conservative - the lint should fire even if there was no initializer, // but the variable has been initialized before `lhs` was evaluated. - && path_to_local(lhs).map_or(true, |lhs| local_is_initialized(cx, lhs)) + && path_to_local(lhs).is_none_or(|lhs| local_is_initialized(cx, lhs)) && let Some(resolved_impl) = cx.tcx.impl_of_method(resolved_fn.def_id()) // Derived forms don't implement `clone_from`/`clone_into`. // See https://github.com/rust-lang/rust/pull/98445#issuecomment-1190681305 && !cx.tcx.is_builtin_derived(resolved_impl) // Don't suggest calling a function we're implementing. - && resolved_impl.as_local().map_or(true, |block_id| { + && resolved_impl.as_local().is_none_or(|block_id| { cx.tcx.hir().parent_owner_iter(e.hir_id).all(|(id, _)| id.def_id != block_id) }) && let resolved_assoc_items = cx.tcx.associated_items(resolved_impl) diff --git a/clippy_lints/src/attrs/deprecated_cfg_attr.rs b/clippy_lints/src/attrs/deprecated_cfg_attr.rs index abf924f7542..3a462018e3e 100644 --- a/clippy_lints/src/attrs/deprecated_cfg_attr.rs +++ b/clippy_lints/src/attrs/deprecated_cfg_attr.rs @@ -1,6 +1,6 @@ use super::{Attribute, DEPRECATED_CFG_ATTR, DEPRECATED_CLIPPY_CFG_ATTR, unnecessary_clippy_cfg}; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use rustc_ast::AttrStyle; use rustc_errors::Applicability; use rustc_lint::EarlyContext; diff --git a/clippy_lints/src/attrs/mod.rs b/clippy_lints/src/attrs/mod.rs index c29c9f08cf7..a9766597d50 100644 --- a/clippy_lints/src/attrs/mod.rs +++ b/clippy_lints/src/attrs/mod.rs @@ -13,7 +13,7 @@ mod useless_attribute; mod utils; use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; +use clippy_utils::msrvs::{self, Msrv}; use rustc_ast::{self as ast, Attribute, MetaItemInner, MetaItemKind}; use rustc_hir::{ImplItem, Item, TraitItem}; use rustc_lint::{EarlyContext, EarlyLintPass, LateContext, LateLintPass}; diff --git a/clippy_lints/src/await_holding_invalid.rs b/clippy_lints/src/await_holding_invalid.rs index 6948cf560a5..2eb0566bf9a 100644 --- a/clippy_lints/src/await_holding_invalid.rs +++ b/clippy_lints/src/await_holding_invalid.rs @@ -1,6 +1,7 @@ use clippy_config::Conf; +use clippy_config::types::create_disallowed_map; use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::{create_disallowed_map, match_def_path, paths}; +use clippy_utils::{match_def_path, paths}; use rustc_hir as hir; use rustc_hir::def_id::{DefId, DefIdMap}; use rustc_lint::{LateContext, LateLintPass}; diff --git a/clippy_lints/src/booleans.rs b/clippy_lints/src/booleans.rs index 896bd5fd03d..6eef0d42a55 100644 --- a/clippy_lints/src/booleans.rs +++ b/clippy_lints/src/booleans.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_hir_and_then}; use clippy_utils::eq_expr_value; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::SpanRangeExt; use clippy_utils::ty::{implements_trait, is_type_diagnostic_item}; use rustc_ast::ast::LitKind; diff --git a/clippy_lints/src/borrow_deref_ref.rs b/clippy_lints/src/borrow_deref_ref.rs index f2551a05b1a..8892a9e6b6b 100644 --- a/clippy_lints/src/borrow_deref_ref.rs +++ b/clippy_lints/src/borrow_deref_ref.rs @@ -57,7 +57,7 @@ impl<'tcx> LateLintPass<'tcx> for BorrowDerefRef { && !addrof_target.span.from_expansion() && let ref_ty = cx.typeck_results().expr_ty(deref_target) && let ty::Ref(_, inner_ty, Mutability::Not) = ref_ty.kind() - && get_parent_expr(cx, e).map_or(true, |parent| { + && get_parent_expr(cx, e).is_none_or(|parent| { match parent.kind { // `*&*foo` should lint `deref_addrof` instead. ExprKind::Unary(UnOp::Deref, _) => is_lint_allowed(cx, DEREF_ADDROF, parent.hir_id), diff --git a/clippy_lints/src/cargo/common_metadata.rs b/clippy_lints/src/cargo/common_metadata.rs index 6714c053913..80514cb52e6 100644 --- a/clippy_lints/src/cargo/common_metadata.rs +++ b/clippy_lints/src/cargo/common_metadata.rs @@ -43,7 +43,7 @@ fn missing_warning(cx: &LateContext<'_>, package: &cargo_metadata::Package, fiel } fn is_empty_str>(value: Option<&T>) -> bool { - value.map_or(true, |s| s.as_ref().is_empty()) + value.is_none_or(|s| s.as_ref().is_empty()) } fn is_empty_vec(value: &[String]) -> bool { diff --git a/clippy_lints/src/casts/cast_abs_to_unsigned.rs b/clippy_lints/src/casts/cast_abs_to_unsigned.rs index b7b63250864..ae433773193 100644 --- a/clippy_lints/src/casts/cast_abs_to_unsigned.rs +++ b/clippy_lints/src/casts/cast_abs_to_unsigned.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::sugg::Sugg; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; diff --git a/clippy_lints/src/casts/cast_lossless.rs b/clippy_lints/src/casts/cast_lossless.rs index 84a44b14dde..4ad39d9160d 100644 --- a/clippy_lints/src/casts/cast_lossless.rs +++ b/clippy_lints/src/casts/cast_lossless.rs @@ -1,6 +1,6 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_in_const_context; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::SpanRangeExt; use clippy_utils::sugg::Sugg; use clippy_utils::ty::is_isize_or_usize; diff --git a/clippy_lints/src/casts/cast_possible_truncation.rs b/clippy_lints/src/casts/cast_possible_truncation.rs index 40a1a9d1ce8..48e9f1d690e 100644 --- a/clippy_lints/src/casts/cast_possible_truncation.rs +++ b/clippy_lints/src/casts/cast_possible_truncation.rs @@ -134,7 +134,7 @@ pub(super) fn check( }; let to_nbits = utils::int_ty_to_nbits(cast_to, cx.tcx); - let cast_from_ptr_size = def.repr().int.map_or(true, |ty| matches!(ty, IntegerType::Pointer(_),)); + let cast_from_ptr_size = def.repr().int.is_none_or(|ty| matches!(ty, IntegerType::Pointer(_),)); let suffix = match (cast_from_ptr_size, is_isize_or_usize(cast_to)) { (_, false) if from_nbits > to_nbits => "", (false, true) if from_nbits > 64 => "", diff --git a/clippy_lints/src/casts/cast_slice_different_sizes.rs b/clippy_lints/src/casts/cast_slice_different_sizes.rs index 285f0357112..030c2d322db 100644 --- a/clippy_lints/src/casts/cast_slice_different_sizes.rs +++ b/clippy_lints/src/casts/cast_slice_different_sizes.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source; use rustc_ast::Mutability; use rustc_hir::{Expr, ExprKind, Node}; diff --git a/clippy_lints/src/casts/cast_slice_from_raw_parts.rs b/clippy_lints/src/casts/cast_slice_from_raw_parts.rs index 1d89f6c75e1..c3bc5c0c9f2 100644 --- a/clippy_lints/src/casts/cast_slice_from_raw_parts.rs +++ b/clippy_lints/src/casts/cast_slice_from_raw_parts.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_context; use rustc_errors::Applicability; use rustc_hir::def_id::DefId; diff --git a/clippy_lints/src/casts/mod.rs b/clippy_lints/src/casts/mod.rs index 3acd4eca420..8b884399f92 100644 --- a/clippy_lints/src/casts/mod.rs +++ b/clippy_lints/src/casts/mod.rs @@ -24,8 +24,8 @@ mod utils; mod zero_ptr; use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::is_hir_ty_cfg_dependant; +use clippy_utils::msrvs::{self, Msrv}; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; diff --git a/clippy_lints/src/casts/ptr_as_ptr.rs b/clippy_lints/src/casts/ptr_as_ptr.rs index 46d67e615c7..a138ade54aa 100644 --- a/clippy_lints/src/casts/ptr_as_ptr.rs +++ b/clippy_lints/src/casts/ptr_as_ptr.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_applicability; use clippy_utils::sugg::Sugg; use rustc_errors::Applicability; diff --git a/clippy_lints/src/casts/ptr_cast_constness.rs b/clippy_lints/src/casts/ptr_cast_constness.rs index 7518dd2435a..945c05ee943 100644 --- a/clippy_lints/src/casts/ptr_cast_constness.rs +++ b/clippy_lints/src/casts/ptr_cast_constness.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::std_or_core; use clippy_utils::sugg::Sugg; use rustc_errors::Applicability; diff --git a/clippy_lints/src/checked_conversions.rs b/clippy_lints/src/checked_conversions.rs index f76e399517c..364f5c7dc7a 100644 --- a/clippy_lints/src/checked_conversions.rs +++ b/clippy_lints/src/checked_conversions.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_applicability; use clippy_utils::{SpanlessEq, is_in_const_context, is_integer_literal}; use rustc_errors::Applicability; diff --git a/clippy_lints/src/copies.rs b/clippy_lints/src/copies.rs index 3ecd36d3711..89808d38b9f 100644 --- a/clippy_lints/src/copies.rs +++ b/clippy_lints/src/copies.rs @@ -212,7 +212,7 @@ fn lint_if_same_then_else(cx: &LateContext<'_>, conds: &[&Expr<'_>], blocks: &[& .array_windows::<2>() .enumerate() .fold(true, |all_eq, (i, &[lhs, rhs])| { - if eq.eq_block(lhs, rhs) && !contains_let(conds[i]) && conds.get(i + 1).map_or(true, |e| !contains_let(e)) { + if eq.eq_block(lhs, rhs) && !contains_let(conds[i]) && conds.get(i + 1).is_none_or(|e| !contains_let(e)) { span_lint_and_note( cx, IF_SAME_THEN_ELSE, @@ -470,7 +470,7 @@ fn scan_block_for_eq<'tcx>( b.stmts // the bounds check will catch the underflow .get(b.stmts.len().wrapping_sub(offset + 1)) - .map_or(true, |s| hash != hash_stmt(cx, s)) + .is_none_or(|s| hash != hash_stmt(cx, s)) }) }) .map_or(block.stmts.len() - start_end_eq, |(i, _)| i); diff --git a/clippy_lints/src/declared_lints.rs b/clippy_lints/src/declared_lints.rs index dff60f76b74..c4a0c8f1865 100644 --- a/clippy_lints/src/declared_lints.rs +++ b/clippy_lints/src/declared_lints.rs @@ -135,6 +135,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::disallowed_names::DISALLOWED_NAMES_INFO, crate::disallowed_script_idents::DISALLOWED_SCRIPT_IDENTS_INFO, crate::disallowed_types::DISALLOWED_TYPES_INFO, + crate::doc::DOC_INCLUDE_WITHOUT_CFG_INFO, crate::doc::DOC_LAZY_CONTINUATION_INFO, crate::doc::DOC_LINK_WITH_QUOTES_INFO, crate::doc::DOC_MARKDOWN_INFO, diff --git a/clippy_lints/src/dereference.rs b/clippy_lints/src/dereference.rs index 1eebfc22af2..b1d192adff9 100644 --- a/clippy_lints/src/dereference.rs +++ b/clippy_lints/src/dereference.rs @@ -10,12 +10,12 @@ use core::mem; use rustc_ast::util::parser::{PREC_PREFIX, PREC_UNAMBIGUOUS}; use rustc_data_structures::fx::FxIndexMap; use rustc_errors::Applicability; +use rustc_hir::def_id::DefId; use rustc_hir::intravisit::{Visitor, walk_ty}; use rustc_hir::{ self as hir, BindingMode, Body, BodyId, BorrowKind, Expr, ExprKind, HirId, MatchSource, Mutability, Node, Pat, PatKind, Path, QPath, TyKind, UnOp, }; -use rustc_hir::def_id::DefId; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::adjustment::{Adjust, Adjustment, AutoBorrow, AutoBorrowMutability}; use rustc_middle::ty::{self, Ty, TyCtxt, TypeVisitableExt, TypeckResults}; @@ -453,7 +453,7 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing<'tcx> { )); } else if stability.is_deref_stable() // Auto-deref doesn't combine with other adjustments - && next_adjust.map_or(true, |a| matches!(a.kind, Adjust::Deref(_) | Adjust::Borrow(_))) + && next_adjust.is_none_or(|a| matches!(a.kind, Adjust::Deref(_) | Adjust::Borrow(_))) && iter.all(|a| matches!(a.kind, Adjust::Deref(_) | Adjust::Borrow(_))) { self.state = Some((State::Borrow { mutability }, StateData { @@ -1070,12 +1070,11 @@ fn report<'tcx>( let mut app = Applicability::MachineApplicable; let (snip, snip_is_macro) = snippet_with_context(cx, expr.span, data.first_expr.span.ctxt(), "..", &mut app); - let sugg = - if !snip_is_macro && expr.precedence() < precedence && !has_enclosing_paren(&snip) { - format!("{prefix}({snip})") - } else { - format!("{prefix}{snip}") - }; + let sugg = if !snip_is_macro && expr.precedence() < precedence && !has_enclosing_paren(&snip) { + format!("{prefix}({snip})") + } else { + format!("{prefix}{snip}") + }; diag.span_suggestion(data.first_expr.span, "try", sugg, app); }, ); diff --git a/clippy_lints/src/derivable_impls.rs b/clippy_lints/src/derivable_impls.rs index 767dda552bc..9569081ad08 100644 --- a/clippy_lints/src/derivable_impls.rs +++ b/clippy_lints/src/derivable_impls.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::indent_of; use clippy_utils::{is_default_equivalent, peel_blocks}; use rustc_errors::Applicability; @@ -132,17 +132,15 @@ fn check_struct<'tcx>( if should_emit { let struct_span = cx.tcx.def_span(adt_def.did()); + let suggestions = vec![ + (item.span, String::new()), // Remove the manual implementation + (struct_span.shrink_to_lo(), "#[derive(Default)]\n".to_string()), // Add the derive attribute + ]; + span_lint_and_then(cx, DERIVABLE_IMPLS, item.span, "this `impl` can be derived", |diag| { - diag.span_suggestion_hidden( - item.span, - "remove the manual implementation...", - String::new(), - Applicability::MachineApplicable, - ); - diag.span_suggestion( - struct_span.shrink_to_lo(), - "...and instead derive it", - "#[derive(Default)]\n".to_string(), + diag.multipart_suggestion( + "replace the manual implementation with a derive attribute", + suggestions, Applicability::MachineApplicable, ); }); @@ -161,23 +159,23 @@ fn check_enum<'tcx>(cx: &LateContext<'tcx>, item: &'tcx Item<'_>, func_expr: &Ex let indent_enum = indent_of(cx, enum_span).unwrap_or(0); let variant_span = cx.tcx.def_span(variant_def.def_id); let indent_variant = indent_of(cx, variant_span).unwrap_or(0); - span_lint_and_then(cx, DERIVABLE_IMPLS, item.span, "this `impl` can be derived", |diag| { - diag.span_suggestion_hidden( - item.span, - "remove the manual implementation...", - String::new(), - Applicability::MachineApplicable, - ); - diag.span_suggestion( + + let suggestions = vec![ + (item.span, String::new()), // Remove the manual implementation + ( enum_span.shrink_to_lo(), - "...and instead derive it...", - format!("#[derive(Default)]\n{indent}", indent = " ".repeat(indent_enum),), - Applicability::MachineApplicable, - ); - diag.span_suggestion( + format!("#[derive(Default)]\n{}", " ".repeat(indent_enum)), + ), // Add the derive attribute + ( variant_span.shrink_to_lo(), - "...and mark the default variant", - format!("#[default]\n{indent}", indent = " ".repeat(indent_variant),), + format!("#[default]\n{}", " ".repeat(indent_variant)), + ), // Mark the default variant + ]; + + span_lint_and_then(cx, DERIVABLE_IMPLS, item.span, "this `impl` can be derived", |diag| { + diag.multipart_suggestion( + "replace the manual implementation with a derive attribute and mark the default variant", + suggestions, Applicability::MachineApplicable, ); }); diff --git a/clippy_lints/src/derive.rs b/clippy_lints/src/derive.rs index 1a34b87e42a..8125dab8adf 100644 --- a/clippy_lints/src/derive.rs +++ b/clippy_lints/src/derive.rs @@ -505,17 +505,15 @@ fn typing_env_env_for_derived_eq(tcx: TyCtxt<'_>, did: DefId, eq_trait_id: DefId } } - let param_env = ParamEnv::new( - tcx.mk_clauses_from_iter(ty_predicates.iter().map(|&(p, _)| p).chain( - params.iter().filter(|&&(_, needs_eq)| needs_eq).map(|&(param, _)| { - ClauseKind::Trait(TraitPredicate { - trait_ref: ty::TraitRef::new(tcx, eq_trait_id, [tcx.mk_param_from_def(param)]), - polarity: ty::PredicatePolarity::Positive, - }) - .upcast(tcx) - }), - )), - ); + let param_env = ParamEnv::new(tcx.mk_clauses_from_iter(ty_predicates.iter().map(|&(p, _)| p).chain( + params.iter().filter(|&&(_, needs_eq)| needs_eq).map(|&(param, _)| { + ClauseKind::Trait(TraitPredicate { + trait_ref: ty::TraitRef::new(tcx, eq_trait_id, [tcx.mk_param_from_def(param)]), + polarity: ty::PredicatePolarity::Positive, + }) + .upcast(tcx) + }), + ))); ty::TypingEnv { typing_mode: ty::TypingMode::non_body_analysis(), param_env, diff --git a/clippy_lints/src/disallowed_macros.rs b/clippy_lints/src/disallowed_macros.rs index bdd49bf8aa7..a0cb36f88dc 100644 --- a/clippy_lints/src/disallowed_macros.rs +++ b/clippy_lints/src/disallowed_macros.rs @@ -1,5 +1,5 @@ use clippy_config::Conf; -use clippy_utils::create_disallowed_map; +use clippy_config::types::create_disallowed_map; use clippy_utils::diagnostics::{span_lint_and_then, span_lint_hir_and_then}; use clippy_utils::macros::macro_backtrace; use rustc_data_structures::fx::FxHashSet; diff --git a/clippy_lints/src/disallowed_methods.rs b/clippy_lints/src/disallowed_methods.rs index 5a01d76a2a6..1e660b1957a 100644 --- a/clippy_lints/src/disallowed_methods.rs +++ b/clippy_lints/src/disallowed_methods.rs @@ -1,5 +1,5 @@ use clippy_config::Conf; -use clippy_utils::create_disallowed_map; +use clippy_config::types::create_disallowed_map; use clippy_utils::diagnostics::span_lint_and_then; use rustc_hir::def::{CtorKind, DefKind, Res}; use rustc_hir::def_id::DefIdMap; diff --git a/clippy_lints/src/doc/include_in_doc_without_cfg.rs b/clippy_lints/src/doc/include_in_doc_without_cfg.rs new file mode 100644 index 00000000000..49978d4a655 --- /dev/null +++ b/clippy_lints/src/doc/include_in_doc_without_cfg.rs @@ -0,0 +1,45 @@ +use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::source::snippet_opt; +use rustc_ast::{AttrArgs, AttrArgsEq, AttrKind, AttrStyle, Attribute}; +use rustc_errors::Applicability; +use rustc_lint::LateContext; +use rustc_span::sym; + +use super::DOC_INCLUDE_WITHOUT_CFG; + +pub fn check(cx: &LateContext<'_>, attrs: &[Attribute]) { + for attr in attrs { + if !attr.span.from_expansion() + && let AttrKind::Normal(ref normal) = attr.kind + && normal.item.path == sym::doc + && let AttrArgs::Eq(_, AttrArgsEq::Hir(ref meta)) = normal.item.args + && !attr.span.contains(meta.span) + // Since the `include_str` is already expanded at this point, we can only take the + // whole attribute snippet and then modify for our suggestion. + && let Some(snippet) = snippet_opt(cx, attr.span) + // We cannot remove this because a `#[doc = include_str!("...")]` attribute can occupy + // several lines. + && let Some(start) = snippet.find('[') + && let Some(end) = snippet.rfind(']') + && let snippet = &snippet[start + 1..end] + // We check that the expansion actually comes from `include_str!` and not just from + // another macro. + && let Some(sub_snippet) = snippet.trim().strip_prefix("doc") + && let Some(sub_snippet) = sub_snippet.trim().strip_prefix("=") + && sub_snippet.trim().starts_with("include_str!") + { + span_lint_and_sugg( + cx, + DOC_INCLUDE_WITHOUT_CFG, + attr.span, + "included a file in documentation unconditionally", + "use `cfg_attr(doc, doc = \"...\")`", + format!( + "#{}[cfg_attr(doc, {snippet})]", + if attr.style == AttrStyle::Inner { "!" } else { "" } + ), + Applicability::MachineApplicable, + ); + } + } +} diff --git a/clippy_lints/src/doc/mod.rs b/clippy_lints/src/doc/mod.rs index df7c37a192a..88ac871acf6 100644 --- a/clippy_lints/src/doc/mod.rs +++ b/clippy_lints/src/doc/mod.rs @@ -1,3 +1,5 @@ +#![allow(clippy::lint_without_lint_pass)] + mod lazy_continuation; mod too_long_first_doc_paragraph; @@ -33,6 +35,7 @@ use std::ops::Range; use url::Url; mod empty_line_after; +mod include_in_doc_without_cfg; mod link_with_quotes; mod markdown; mod missing_headers; @@ -532,6 +535,35 @@ declare_clippy_lint! { "empty line after doc comments" } +declare_clippy_lint! { + /// ### What it does + /// Checks if included files in doc comments are included only for `cfg(doc)`. + /// + /// ### Why restrict this? + /// These files are not useful for compilation but will still be included. + /// Also, if any of these non-source code file is updated, it will trigger a + /// recompilation. + /// + /// ### Known problems + /// + /// Excluding this will currently result in the file being left out if + /// the item's docs are inlined from another crate. This may be fixed in a + /// future version of rustdoc. + /// + /// ### Example + /// ```ignore + /// #![doc = include_str!("some_file.md")] + /// ``` + /// Use instead: + /// ```no_run + /// #![cfg_attr(doc, doc = include_str!("some_file.md"))] + /// ``` + #[clippy::version = "1.84.0"] + pub DOC_INCLUDE_WITHOUT_CFG, + restriction, + "check if files included in documentation are behind `cfg(doc)`" +} + pub struct Documentation { valid_idents: FxHashSet, check_private_items: bool, @@ -561,6 +593,7 @@ impl_lint_pass!(Documentation => [ EMPTY_LINE_AFTER_OUTER_ATTR, EMPTY_LINE_AFTER_DOC_COMMENTS, TOO_LONG_FIRST_DOC_PARAGRAPH, + DOC_INCLUDE_WITHOUT_CFG, ]); impl<'tcx> LateLintPass<'tcx> for Documentation { @@ -690,6 +723,7 @@ fn check_attrs(cx: &LateContext<'_>, valid_idents: &FxHashSet, attrs: &[ Some(("fake".into(), "fake".into())) } + include_in_doc_without_cfg::check(cx, attrs); if suspicious_doc_comments::check(cx, attrs) || empty_line_after::check(cx, attrs) || is_doc_hidden(attrs) { return None; } @@ -917,6 +951,7 @@ fn check_doc<'a, Events: Iterator, Range LateLintPass<'tcx> for ExcessiveBools { && fn_header.abi == Abi::Rust && fn_decl.inputs.len() as u64 > self.max_fn_params_bools && get_parent_as_impl(cx.tcx, cx.tcx.local_def_id_to_hir_id(def_id)) - .map_or(true, |impl_item| impl_item.of_trait.is_none()) + .is_none_or(|impl_item| impl_item.of_trait.is_none()) { check_fn_decl(cx, fn_decl, span, self.max_fn_params_bools); } diff --git a/clippy_lints/src/extra_unused_type_parameters.rs b/clippy_lints/src/extra_unused_type_parameters.rs index 81152da8c85..ae4b6680065 100644 --- a/clippy_lints/src/extra_unused_type_parameters.rs +++ b/clippy_lints/src/extra_unused_type_parameters.rs @@ -6,7 +6,7 @@ use rustc_errors::Applicability; use rustc_hir::intravisit::{Visitor, walk_impl_item, walk_item, walk_param_bound, walk_ty}; use rustc_hir::{ BodyId, ExprKind, GenericBound, GenericParam, GenericParamKind, Generics, ImplItem, ImplItemKind, Item, ItemKind, - PredicateOrigin, Ty, WherePredicate, WherePredicateKind + PredicateOrigin, Ty, WherePredicate, WherePredicateKind, }; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::hir::nested_filter; diff --git a/clippy_lints/src/format_args.rs b/clippy_lints/src/format_args.rs index 4c043f8dc14..da5825b7ab2 100644 --- a/clippy_lints/src/format_args.rs +++ b/clippy_lints/src/format_args.rs @@ -1,6 +1,5 @@ use arrayvec::ArrayVec; use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; use clippy_utils::is_diag_trait_item; use clippy_utils::macros::{ @@ -8,6 +7,7 @@ use clippy_utils::macros::{ format_placeholder_format_span, is_assert_macro, is_format_macro, is_panic, matching_root_macro_call, root_macro_call_first_node, }; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::SpanRangeExt; use clippy_utils::ty::{implements_trait, is_type_lang_item}; use itertools::Itertools; diff --git a/clippy_lints/src/from_over_into.rs b/clippy_lints/src/from_over_into.rs index 14da0b515a5..e43c311eb85 100644 --- a/clippy_lints/src/from_over_into.rs +++ b/clippy_lints/src/from_over_into.rs @@ -1,9 +1,9 @@ use std::ops::ControlFlow; use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::macros::span_is_local; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::path_def_id; use clippy_utils::source::SpanRangeExt; use rustc_errors::Applicability; @@ -92,7 +92,7 @@ impl<'tcx> LateLintPass<'tcx> for FromOverInto { |diag| { // If the target type is likely foreign mention the orphan rules as it's a common source of // confusion - if path_def_id(cx, target_ty.peel_refs()).map_or(true, |id| !id.is_local()) { + if path_def_id(cx, target_ty.peel_refs()).is_none_or(|id| !id.is_local()) { diag.help( "`impl From for Foreign` is allowed by the orphan rules, for more information see\n\ https://doc.rust-lang.org/reference/items/implementations.html#trait-implementation-coherence" diff --git a/clippy_lints/src/future_not_send.rs b/clippy_lints/src/future_not_send.rs index cf08c16458b..bb2dc9995df 100644 --- a/clippy_lints/src/future_not_send.rs +++ b/clippy_lints/src/future_not_send.rs @@ -1,3 +1,5 @@ +use std::ops::ControlFlow; + use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::return_ty; use rustc_hir::intravisit::FnKind; @@ -5,7 +7,9 @@ use rustc_hir::{Body, FnDecl}; use rustc_infer::infer::TyCtxtInferExt; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::print::PrintTraitRefExt; -use rustc_middle::ty::{self, AliasTy, ClauseKind, PredicateKind}; +use rustc_middle::ty::{ + self, AliasTy, Binder, ClauseKind, PredicateKind, Ty, TyCtxt, TypeVisitable, TypeVisitableExt, TypeVisitor, +}; use rustc_session::declare_lint_pass; use rustc_span::def_id::LocalDefId; use rustc_span::{Span, sym}; @@ -15,9 +19,16 @@ use rustc_trait_selection::traits::{self, FulfillmentError, ObligationCtxt}; declare_clippy_lint! { /// ### What it does /// This lint requires Future implementations returned from - /// functions and methods to implement the `Send` marker trait. It is mostly - /// used by library authors (public and internal) that target an audience where - /// multithreaded executors are likely to be used for running these Futures. + /// functions and methods to implement the `Send` marker trait, + /// ignoring type parameters. + /// + /// If a function is generic and its Future conditionally implements `Send` + /// based on a generic parameter then it is considered `Send` and no warning is emitted. + /// + /// This can be used by library authors (public and internal) to ensure + /// their functions are compatible with both multi-threaded runtimes that require `Send` futures, + /// as well as single-threaded runtimes where callers may choose `!Send` types + /// for generic parameters. /// /// ### Why is this bad? /// A Future implementation captures some state that it @@ -64,22 +75,46 @@ impl<'tcx> LateLintPass<'tcx> for FutureNotSend { return; } let ret_ty = return_ty(cx, cx.tcx.local_def_id_to_hir_id(fn_def_id).expect_owner()); - if let ty::Alias(ty::Opaque, AliasTy { def_id, args, .. }) = *ret_ty.kind() { + if let ty::Alias(ty::Opaque, AliasTy { def_id, args, .. }) = *ret_ty.kind() + && let Some(future_trait) = cx.tcx.lang_items().future_trait() + && let Some(send_trait) = cx.tcx.get_diagnostic_item(sym::Send) + { let preds = cx.tcx.explicit_item_super_predicates(def_id); let is_future = preds.iter_instantiated_copied(cx.tcx, args).any(|(p, _)| { - p.as_trait_clause().is_some_and(|trait_pred| { - Some(trait_pred.skip_binder().trait_ref.def_id) == cx.tcx.lang_items().future_trait() - }) + p.as_trait_clause() + .is_some_and(|trait_pred| trait_pred.skip_binder().trait_ref.def_id == future_trait) }); if is_future { - let send_trait = cx.tcx.get_diagnostic_item(sym::Send).unwrap(); let span = decl.output.span(); let infcx = cx.tcx.infer_ctxt().build(cx.typing_mode()); let ocx = ObligationCtxt::new_with_diagnostics(&infcx); let cause = traits::ObligationCause::misc(span, fn_def_id); ocx.register_bound(cause, cx.param_env, ret_ty, send_trait); let send_errors = ocx.select_all_or_error(); - if !send_errors.is_empty() { + + // Allow errors that try to prove `Send` for types that "mention" a generic parameter at the "top + // level". + // For example, allow errors that `T: Send` can't be proven, but reject `Rc: Send` errors, + // which is always unconditionally `!Send` for any possible type `T`. + // + // We also allow associated type projections if the self type is either itself a projection or a + // type parameter. + // This is to prevent emitting warnings for e.g. holding a `::Output` across await + // points, where `Fut` is a type parameter. + + let is_send = send_errors.iter().all(|err| { + err.obligation + .predicate + .as_trait_clause() + .map(Binder::skip_binder) + .is_some_and(|pred| { + pred.def_id() == send_trait + && pred.self_ty().has_param() + && TyParamAtTopLevelVisitor.visit_ty(pred.self_ty()) == ControlFlow::Break(true) + }) + }); + + if !is_send { span_lint_and_then( cx, FUTURE_NOT_SEND, @@ -107,3 +142,15 @@ impl<'tcx> LateLintPass<'tcx> for FutureNotSend { } } } + +struct TyParamAtTopLevelVisitor; +impl<'tcx> TypeVisitor> for TyParamAtTopLevelVisitor { + type Result = ControlFlow; + fn visit_ty(&mut self, ty: Ty<'tcx>) -> Self::Result { + match ty.kind() { + ty::Param(_) => ControlFlow::Break(true), + ty::Alias(ty::AliasTyKind::Projection, ty) => ty.visit_with(self), + _ => ControlFlow::Break(false), + } + } +} diff --git a/clippy_lints/src/if_let_mutex.rs b/clippy_lints/src/if_let_mutex.rs index ba80c099a01..6444e99ae9c 100644 --- a/clippy_lints/src/if_let_mutex.rs +++ b/clippy_lints/src/if_let_mutex.rs @@ -7,6 +7,7 @@ use rustc_errors::Diag; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; +use rustc_span::edition::Edition::Edition2024; use rustc_span::sym; declare_clippy_lint! { @@ -14,6 +15,12 @@ declare_clippy_lint! { /// Checks for `Mutex::lock` calls in `if let` expression /// with lock calls in any of the else blocks. /// + /// ### Disabled starting in Edition 2024 + /// This lint is effectively disabled starting in + /// Edition 2024 as `if let ... else` scoping was reworked + /// such that this is no longer an issue. See + /// [Proposal: stabilize if_let_rescope for Edition 2024](https://github.com/rust-lang/rust/issues/131154) + /// /// ### Why is this bad? /// The Mutex lock remains held for the whole /// `if let ... else` block and deadlocks. @@ -45,6 +52,10 @@ declare_lint_pass!(IfLetMutex => [IF_LET_MUTEX]); impl<'tcx> LateLintPass<'tcx> for IfLetMutex { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { + if cx.tcx.sess.edition() >= Edition2024 { + return; + } + if let Some(higher::IfLet { let_expr, if_then, @@ -86,7 +97,7 @@ fn mutex_lock_call<'tcx>( && path.ident.as_str() == "lock" && let ty = cx.typeck_results().expr_ty(self_arg).peel_refs() && is_type_diagnostic_item(cx, ty, sym::Mutex) - && op_mutex.map_or(true, |op| eq_expr_value(cx, self_arg, op)) + && op_mutex.is_none_or(|op| eq_expr_value(cx, self_arg, op)) { ControlFlow::Break(self_arg) } else { diff --git a/clippy_lints/src/if_then_some_else_none.rs b/clippy_lints/src/if_then_some_else_none.rs index d63c18c0eda..3fc0a696522 100644 --- a/clippy_lints/src/if_then_some_else_none.rs +++ b/clippy_lints/src/if_then_some_else_none.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::eager_or_lazy::switch_to_eager_eval; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_context; use clippy_utils::sugg::Sugg; use clippy_utils::{ diff --git a/clippy_lints/src/implicit_saturating_sub.rs b/clippy_lints/src/implicit_saturating_sub.rs index 3b84b569c3e..37481dc7feb 100644 --- a/clippy_lints/src/implicit_saturating_sub.rs +++ b/clippy_lints/src/implicit_saturating_sub.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_opt; use clippy_utils::{ SpanlessEq, higher, is_in_const_context, is_integer_literal, path_to_local, peel_blocks, peel_blocks_with_stmt, diff --git a/clippy_lints/src/incompatible_msrv.rs b/clippy_lints/src/incompatible_msrv.rs index 0b3a6ee1bea..f3467adacc5 100644 --- a/clippy_lints/src/incompatible_msrv.rs +++ b/clippy_lints/src/incompatible_msrv.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::Msrv; use clippy_utils::diagnostics::span_lint; use clippy_utils::is_in_test; +use clippy_utils::msrvs::Msrv; use rustc_attr::{StabilityLevel, StableSince}; use rustc_data_structures::fx::FxHashMap; use rustc_hir::{Expr, ExprKind, HirId}; diff --git a/clippy_lints/src/index_refutable_slice.rs b/clippy_lints/src/index_refutable_slice.rs index 96550c4d1cb..c2030a5ab09 100644 --- a/clippy_lints/src/index_refutable_slice.rs +++ b/clippy_lints/src/index_refutable_slice.rs @@ -1,8 +1,8 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::higher::IfLet; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::ty::is_copy; use clippy_utils::{is_expn_of, is_lint_allowed, path_to_local}; use rustc_data_structures::fx::{FxHashSet, FxIndexMap, FxIndexSet}; diff --git a/clippy_lints/src/instant_subtraction.rs b/clippy_lints/src/instant_subtraction.rs index 66931a7f98c..f4e41dc826b 100644 --- a/clippy_lints/src/instant_subtraction.rs +++ b/clippy_lints/src/instant_subtraction.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_context; use clippy_utils::sugg::Sugg; use clippy_utils::ty; diff --git a/clippy_lints/src/large_const_arrays.rs b/clippy_lints/src/large_const_arrays.rs index 644365c9fe5..623b6b4fcc1 100644 --- a/clippy_lints/src/large_const_arrays.rs +++ b/clippy_lints/src/large_const_arrays.rs @@ -3,8 +3,8 @@ use clippy_utils::diagnostics::span_lint_and_then; use rustc_errors::Applicability; use rustc_hir::{Item, ItemKind}; use rustc_lint::{LateContext, LateLintPass}; -use rustc_middle::ty::layout::LayoutOf; use rustc_middle::ty; +use rustc_middle::ty::layout::LayoutOf; use rustc_session::impl_lint_pass; use rustc_span::{BytePos, Pos, Span}; diff --git a/clippy_lints/src/legacy_numeric_constants.rs b/clippy_lints/src/legacy_numeric_constants.rs index e17d6213679..fb46bdcab6e 100644 --- a/clippy_lints/src/legacy_numeric_constants.rs +++ b/clippy_lints/src/legacy_numeric_constants.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{Msrv, NUMERIC_ASSOCIATED_CONSTANTS}; use clippy_utils::diagnostics::{span_lint_and_then, span_lint_hir_and_then}; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::{get_parent_expr, is_from_proc_macro}; use hir::def_id::DefId; use rustc_errors::Applicability; @@ -53,7 +53,7 @@ impl<'tcx> LateLintPass<'tcx> for LegacyNumericConstants { // Integer modules are "TBD" deprecated, and the contents are too, // so lint on the `use` statement directly. if let ItemKind::Use(path, kind @ (UseKind::Single | UseKind::Glob)) = item.kind - && self.msrv.meets(NUMERIC_ASSOCIATED_CONSTANTS) + && self.msrv.meets(msrvs::NUMERIC_ASSOCIATED_CONSTANTS) && !in_external_macro(cx.sess(), item.span) && let Some(def_id) = path.res[0].opt_def_id() { @@ -138,7 +138,7 @@ impl<'tcx> LateLintPass<'tcx> for LegacyNumericConstants { return; }; - if self.msrv.meets(NUMERIC_ASSOCIATED_CONSTANTS) + if self.msrv.meets(msrvs::NUMERIC_ASSOCIATED_CONSTANTS) && !in_external_macro(cx.sess(), expr.span) && !is_from_proc_macro(cx, expr) { diff --git a/clippy_lints/src/lifetimes.rs b/clippy_lints/src/lifetimes.rs index 6ff1a1e5ec7..35b14776e59 100644 --- a/clippy_lints/src/lifetimes.rs +++ b/clippy_lints/src/lifetimes.rs @@ -1,6 +1,7 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_then}; use clippy_utils::trait_ref_of_method; use itertools::Itertools; +use rustc_ast::visit::{try_visit, walk_list}; use rustc_data_structures::fx::{FxHashSet, FxIndexMap, FxIndexSet}; use rustc_errors::Applicability; use rustc_hir::FnRetTy::Return; @@ -11,8 +12,9 @@ use rustc_hir::intravisit::{ }; use rustc_hir::{ BareFnTy, BodyId, FnDecl, FnSig, GenericArg, GenericArgs, GenericBound, GenericParam, GenericParamKind, Generics, - Impl, ImplItem, ImplItemKind, Item, ItemKind, Lifetime, LifetimeName, LifetimeParamKind, Node, PolyTraitRef, - PredicateOrigin, TraitFn, TraitItem, TraitItemKind, Ty, TyKind, WherePredicate, WherePredicateKind, lang_items, + HirId, Impl, ImplItem, ImplItemKind, Item, ItemKind, Lifetime, LifetimeName, LifetimeParamKind, Node, PolyTraitRef, + PredicateOrigin, TraitFn, TraitItem, TraitItemKind, Ty, TyKind, WhereBoundPredicate, WherePredicate, + WherePredicateKind, lang_items, }; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::hir::map::Map; @@ -483,6 +485,7 @@ fn has_where_lifetimes<'tcx>(cx: &LateContext<'tcx>, generics: &'tcx Generics<'_ struct Usage { lifetime: Lifetime, in_where_predicate: bool, + in_bounded_ty: bool, in_generics_arg: bool, } @@ -490,11 +493,15 @@ struct LifetimeChecker<'cx, 'tcx, F> { cx: &'cx LateContext<'tcx>, map: FxIndexMap>, where_predicate_depth: usize, + bounded_ty_depth: usize, generic_args_depth: usize, phantom: std::marker::PhantomData, } -impl<'cx, 'tcx, F> LifetimeChecker<'cx, 'tcx, F> { +impl<'cx, 'tcx, F> LifetimeChecker<'cx, 'tcx, F> +where + F: NestedFilter<'tcx>, +{ fn new(cx: &'cx LateContext<'tcx>, generics: &'tcx Generics<'_>) -> LifetimeChecker<'cx, 'tcx, F> { let map = generics .params @@ -510,10 +517,30 @@ impl<'cx, 'tcx, F> LifetimeChecker<'cx, 'tcx, F> { cx, map, where_predicate_depth: 0, + bounded_ty_depth: 0, generic_args_depth: 0, phantom: std::marker::PhantomData, } } + + // `visit_where_bound_predicate` is based on: + // https://github.com/rust-lang/rust/blob/864cee3ea383cc8254ba394ba355e648faa9cfa5/compiler/rustc_hir/src/intravisit.rs#L936-L939 + fn visit_where_bound_predicate( + &mut self, + hir_id: HirId, + bounded_ty: &'tcx Ty<'tcx>, + bounds: &'tcx [GenericBound<'tcx>], + bound_generic_params: &'tcx [GenericParam<'tcx>], + ) { + try_visit!(self.visit_id(hir_id)); + + self.bounded_ty_depth += 1; + try_visit!(self.visit_ty(bounded_ty)); + self.bounded_ty_depth -= 1; + + walk_list!(self, visit_param_bound, bounds); + walk_list!(self, visit_generic_param, bound_generic_params); + } } impl<'tcx, F> Visitor<'tcx> for LifetimeChecker<'_, 'tcx, F> @@ -531,6 +558,7 @@ where usages.push(Usage { lifetime: *lifetime, in_where_predicate: self.where_predicate_depth != 0, + in_bounded_ty: self.bounded_ty_depth != 0, in_generics_arg: self.generic_args_depth != 0, }); } @@ -538,7 +566,17 @@ where fn visit_where_predicate(&mut self, predicate: &'tcx WherePredicate<'tcx>) { self.where_predicate_depth += 1; - walk_where_predicate(self, predicate); + if let &WherePredicateKind::BoundPredicate(WhereBoundPredicate { + bounded_ty, + bounds, + bound_generic_params, + origin: _, + }) = predicate.kind + { + self.visit_where_bound_predicate(predicate.hir_id, bounded_ty, bounds, bound_generic_params); + } else { + walk_where_predicate(self, predicate); + } self.where_predicate_depth -= 1; } @@ -562,7 +600,7 @@ fn report_extra_lifetimes<'tcx>(cx: &LateContext<'tcx>, func: &'tcx FnDecl<'_>, for (def_id, usages) in checker.map { if usages .iter() - .all(|usage| usage.in_where_predicate && !usage.in_generics_arg) + .all(|usage| usage.in_where_predicate && !usage.in_bounded_ty && !usage.in_generics_arg) { span_lint( cx, @@ -589,7 +627,7 @@ fn report_extra_impl_lifetimes<'tcx>(cx: &LateContext<'tcx>, impl_: &'tcx Impl<' for (&def_id, usages) in &checker.map { if usages .iter() - .all(|usage| usage.in_where_predicate && !usage.in_generics_arg) + .all(|usage| usage.in_where_predicate && !usage.in_bounded_ty && !usage.in_generics_arg) { span_lint( cx, @@ -605,8 +643,8 @@ fn report_extra_impl_lifetimes<'tcx>(cx: &LateContext<'tcx>, impl_: &'tcx Impl<' // An `impl` lifetime is elidable if it satisfies the following conditions: // - It is used exactly once. -// - That single use is not in `GenericArgs` in a `WherePredicate`. (Note that `GenericArgs` are -// different from `GenericParam`s.) +// - That single use is not in a bounded type or `GenericArgs` in a `WherePredicate`. (Note that +// `GenericArgs` are different from `GenericParam`s.) fn report_elidable_impl_lifetimes<'tcx>( cx: &LateContext<'tcx>, impl_: &'tcx Impl<'_>, @@ -623,6 +661,7 @@ fn report_elidable_impl_lifetimes<'tcx>( } | Usage { lifetime, + in_bounded_ty: false, in_generics_arg: false, .. }, diff --git a/clippy_lints/src/loops/explicit_iter_loop.rs b/clippy_lints/src/loops/explicit_iter_loop.rs index d999e1a0585..06cf901bfb2 100644 --- a/clippy_lints/src/loops/explicit_iter_loop.rs +++ b/clippy_lints/src/loops/explicit_iter_loop.rs @@ -1,6 +1,6 @@ use super::EXPLICIT_ITER_LOOP; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::{ implements_trait, implements_trait_with_env, is_copy, is_type_lang_item, make_normalized_projection, @@ -29,7 +29,7 @@ pub(super) fn check( if !msrv.meets(msrvs::ARRAY_INTO_ITERATOR) { return; } - } else if count.try_to_target_usize(cx.tcx).map_or(true, |x| x > 32) && !msrv.meets(msrvs::ARRAY_IMPL_ANY_LEN) { + } else if count.try_to_target_usize(cx.tcx).is_none_or(|x| x > 32) && !msrv.meets(msrvs::ARRAY_IMPL_ANY_LEN) { return; } } @@ -181,7 +181,8 @@ fn is_ref_iterable<'tcx>( // Attempt to borrow let self_ty = Ty::new_ref(cx.tcx, cx.tcx.lifetimes.re_erased, self_ty, mutbl); if implements_trait(cx, self_ty, trait_id, &[]) - && let Some(ty) = make_normalized_projection(cx.tcx, cx.typing_env(), trait_id, sym!(IntoIter), [self_ty]) + && let Some(ty) = + make_normalized_projection(cx.tcx, cx.typing_env(), trait_id, sym!(IntoIter), [self_ty]) && ty == res_ty { return Some((AdjustKind::borrow(mutbl), self_ty)); diff --git a/clippy_lints/src/loops/mod.rs b/clippy_lints/src/loops/mod.rs index 17215621d2a..f3ca4a4a571 100644 --- a/clippy_lints/src/loops/mod.rs +++ b/clippy_lints/src/loops/mod.rs @@ -23,8 +23,8 @@ mod while_let_loop; mod while_let_on_iterator; use clippy_config::Conf; -use clippy_config::msrvs::Msrv; use clippy_utils::higher; +use clippy_utils::msrvs::Msrv; use rustc_ast::Label; use rustc_hir::{Expr, ExprKind, LoopSource, Pat}; use rustc_lint::{LateContext, LateLintPass}; diff --git a/clippy_lints/src/manual_bits.rs b/clippy_lints/src/manual_bits.rs index fd71167f814..c31656f8a05 100644 --- a/clippy_lints/src/manual_bits.rs +++ b/clippy_lints/src/manual_bits.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::get_parent_expr; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_context; use rustc_ast::ast::LitKind; use rustc_data_structures::packed::Pu128; diff --git a/clippy_lints/src/manual_clamp.rs b/clippy_lints/src/manual_clamp.rs index 016ec7320a6..484a7ba256b 100644 --- a/clippy_lints/src/manual_clamp.rs +++ b/clippy_lints/src/manual_clamp.rs @@ -1,8 +1,8 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::{span_lint_and_then, span_lint_hir_and_then}; use clippy_utils::higher::If; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::sugg::Sugg; use clippy_utils::ty::implements_trait; use clippy_utils::visitors::is_const_evaluatable; diff --git a/clippy_lints/src/manual_div_ceil.rs b/clippy_lints/src/manual_div_ceil.rs index 4c171e6d890..bbb89bee835 100644 --- a/clippy_lints/src/manual_div_ceil.rs +++ b/clippy_lints/src/manual_div_ceil.rs @@ -1,6 +1,6 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::SpanlessEq; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_applicability; use clippy_utils::sugg::Sugg; use rustc_ast::{BinOpKind, LitKind}; @@ -35,7 +35,7 @@ declare_clippy_lint! { /// let y: i32 = 4; /// let div = x.div_ceil(y); /// ``` - #[clippy::version = "1.81.0"] + #[clippy::version = "1.83.0"] pub MANUAL_DIV_CEIL, complexity, "manually reimplementing `div_ceil`" diff --git a/clippy_lints/src/manual_float_methods.rs b/clippy_lints/src/manual_float_methods.rs index a269ea11397..b12f575e81a 100644 --- a/clippy_lints/src/manual_float_methods.rs +++ b/clippy_lints/src/manual_float_methods.rs @@ -1,7 +1,7 @@ -use clippy_config::msrvs::Msrv; -use clippy_config::{Conf, msrvs}; +use clippy_config::Conf; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::SpanRangeExt; use clippy_utils::{is_from_proc_macro, path_to_local}; use rustc_errors::Applicability; diff --git a/clippy_lints/src/manual_hash_one.rs b/clippy_lints/src/manual_hash_one.rs index 7a9c9963742..7e092d11f1b 100644 --- a/clippy_lints/src/manual_hash_one.rs +++ b/clippy_lints/src/manual_hash_one.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_hir_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::SpanRangeExt; use clippy_utils::visitors::{is_local_used, local_used_once}; use clippy_utils::{is_trait_method, path_to_local_id}; diff --git a/clippy_lints/src/manual_is_ascii_check.rs b/clippy_lints/src/manual_is_ascii_check.rs index dec8c5d85de..3f01f3cf30a 100644 --- a/clippy_lints/src/manual_is_ascii_check.rs +++ b/clippy_lints/src/manual_is_ascii_check.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::macros::matching_root_macro_call; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::sugg::Sugg; use clippy_utils::{higher, is_in_const_context, path_to_local, peel_ref_operators}; use rustc_ast::LitKind::{Byte, Char}; diff --git a/clippy_lints/src/manual_is_power_of_two.rs b/clippy_lints/src/manual_is_power_of_two.rs index a11d3e4624c..4fee3bf7aa9 100644 --- a/clippy_lints/src/manual_is_power_of_two.rs +++ b/clippy_lints/src/manual_is_power_of_two.rs @@ -27,7 +27,7 @@ declare_clippy_lint! { /// let a: u32 = 4; /// let result = a.is_power_of_two(); /// ``` - #[clippy::version = "1.82.0"] + #[clippy::version = "1.83.0"] pub MANUAL_IS_POWER_OF_TWO, pedantic, "manually reimplementing `is_power_of_two`" diff --git a/clippy_lints/src/manual_let_else.rs b/clippy_lints/src/manual_let_else.rs index 17185df5d76..a70955a7c78 100644 --- a/clippy_lints/src/manual_let_else.rs +++ b/clippy_lints/src/manual_let_else.rs @@ -1,11 +1,10 @@ use crate::question_mark::{QUESTION_MARK, QuestionMark}; -use clippy_config::msrvs; use clippy_config::types::MatchLintBehaviour; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::higher::IfLetOrMatch; use clippy_utils::source::snippet_with_context; use clippy_utils::ty::is_type_diagnostic_item; -use clippy_utils::{is_lint_allowed, is_never_expr, pat_and_expr_can_be_question_mark, peel_blocks}; +use clippy_utils::{is_lint_allowed, is_never_expr, msrvs, pat_and_expr_can_be_question_mark, peel_blocks}; use rustc_data_structures::fx::{FxHashMap, FxHashSet}; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind, MatchSource, Pat, PatKind, QPath, Stmt, StmtKind}; diff --git a/clippy_lints/src/manual_main_separator_str.rs b/clippy_lints/src/manual_main_separator_str.rs index 85e99a92cf5..b7563a2508d 100644 --- a/clippy_lints/src/manual_main_separator_str.rs +++ b/clippy_lints/src/manual_main_separator_str.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::{is_trait_method, peel_hir_expr_refs}; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; diff --git a/clippy_lints/src/manual_non_exhaustive.rs b/clippy_lints/src/manual_non_exhaustive.rs index 25868ccae40..00800231fe4 100644 --- a/clippy_lints/src/manual_non_exhaustive.rs +++ b/clippy_lints/src/manual_non_exhaustive.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_then, span_lint_hir_and_then}; use clippy_utils::is_doc_hidden; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_indent; use itertools::Itertools; use rustc_ast::attr; diff --git a/clippy_lints/src/manual_rem_euclid.rs b/clippy_lints/src/manual_rem_euclid.rs index 86293169ea2..5e58054a986 100644 --- a/clippy_lints/src/manual_rem_euclid.rs +++ b/clippy_lints/src/manual_rem_euclid.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, FullInt}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_context; use clippy_utils::{is_in_const_context, path_to_local}; use rustc_errors::Applicability; diff --git a/clippy_lints/src/manual_retain.rs b/clippy_lints/src/manual_retain.rs index a60163be770..708980ac503 100644 --- a/clippy_lints/src/manual_retain.rs +++ b/clippy_lints/src/manual_retain.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::SpanlessEq; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet; use clippy_utils::ty::{get_type_diagnostic_name, is_type_lang_item}; use rustc_errors::Applicability; diff --git a/clippy_lints/src/manual_strip.rs b/clippy_lints/src/manual_strip.rs index 3f401eff6bd..79de41db343 100644 --- a/clippy_lints/src/manual_strip.rs +++ b/clippy_lints/src/manual_strip.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet; use clippy_utils::usage::mutated_variables; use clippy_utils::{eq_expr_value, higher}; diff --git a/clippy_lints/src/matches/collapsible_match.rs b/clippy_lints/src/matches/collapsible_match.rs index 50e6dfc6298..99a7b8c74be 100644 --- a/clippy_lints/src/matches/collapsible_match.rs +++ b/clippy_lints/src/matches/collapsible_match.rs @@ -1,6 +1,6 @@ -use clippy_config::msrvs::Msrv; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::higher::IfLetOrMatch; +use clippy_utils::msrvs::Msrv; use clippy_utils::source::snippet; use clippy_utils::visitors::is_local_used; use clippy_utils::{ @@ -72,14 +72,13 @@ fn check_arm<'tcx>( (Some(a), Some(b)) => SpanlessEq::new(cx).eq_expr(a, b), } // the binding must not be used in the if guard - && outer_guard.map_or( - true, + && outer_guard.is_none_or( |e| !is_local_used(cx, e, binding_id) ) // ...or anywhere in the inner expression && match inner { IfLetOrMatch::IfLet(_, _, body, els, _) => { - !is_local_used(cx, body, binding_id) && els.map_or(true, |e| !is_local_used(cx, e, binding_id)) + !is_local_used(cx, body, binding_id) && els.is_none_or(|e| !is_local_used(cx, e, binding_id)) }, IfLetOrMatch::Match(_, arms, ..) => !arms.iter().any(|arm| is_local_used(cx, arm, binding_id)), } diff --git a/clippy_lints/src/matches/mod.rs b/clippy_lints/src/matches/mod.rs index 28adcc2f227..64969271764 100644 --- a/clippy_lints/src/matches/mod.rs +++ b/clippy_lints/src/matches/mod.rs @@ -25,7 +25,7 @@ mod try_err; mod wild_in_or_pats; use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::walk_span_to_context; use clippy_utils::{higher, is_direct_expn_of, is_in_const_context, is_span_match, span_contains_cfg}; use rustc_hir::{Arm, Expr, ExprKind, LetStmt, MatchSource, Pat, PatKind}; diff --git a/clippy_lints/src/matches/redundant_guards.rs b/clippy_lints/src/matches/redundant_guards.rs index 9e54475033c..dfc0513add9 100644 --- a/clippy_lints/src/matches/redundant_guards.rs +++ b/clippy_lints/src/matches/redundant_guards.rs @@ -1,6 +1,6 @@ -use clippy_config::msrvs::Msrv; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::macros::matching_root_macro_call; +use clippy_utils::msrvs::Msrv; use clippy_utils::source::snippet; use clippy_utils::visitors::{for_each_expr_without_closures, is_local_used}; use clippy_utils::{is_in_const_context, path_to_local}; @@ -243,11 +243,6 @@ fn emit_redundant_guards<'tcx>( } /// Checks if the given `Expr` can also be represented as a `Pat`. -/// -/// All literals generally also work as patterns, however float literals are special. -/// They are currently (as of 2023/08/08) still allowed in patterns, but that will become -/// an error in the future, and rustc already actively warns against this (see rust#41620), -/// so we don't consider those as usable within patterns for linting purposes. fn expr_can_be_pat(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { for_each_expr_without_closures(expr, |expr| { if match expr.kind { @@ -267,7 +262,7 @@ fn expr_can_be_pat(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { | ExprKind::Tup(..) | ExprKind::Struct(..) | ExprKind::Unary(UnOp::Neg, _) => true, - ExprKind::Lit(lit) if !matches!(lit.node, LitKind::Float(..)) => true, + ExprKind::Lit(lit) if !matches!(lit.node, LitKind::CStr(..)) => true, _ => false, } { return ControlFlow::Continue(()); diff --git a/clippy_lints/src/mem_replace.rs b/clippy_lints/src/mem_replace.rs index 146748734cf..5597cd85abc 100644 --- a/clippy_lints/src/mem_replace.rs +++ b/clippy_lints/src/mem_replace.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_sugg, span_lint_and_then}; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::{snippet, snippet_with_applicability}; use clippy_utils::sugg::Sugg; use clippy_utils::ty::is_non_aggregate_primitive_type; diff --git a/clippy_lints/src/methods/clone_on_copy.rs b/clippy_lints/src/methods/clone_on_copy.rs index c9604c7b2e2..1ee27d90d05 100644 --- a/clippy_lints/src/methods/clone_on_copy.rs +++ b/clippy_lints/src/methods/clone_on_copy.rs @@ -30,7 +30,7 @@ pub(super) fn check( .type_dependent_def_id(expr.hir_id) .and_then(|id| cx.tcx.trait_of_item(id)) .zip(cx.tcx.lang_items().clone_trait()) - .map_or(true, |(x, y)| x != y) + .is_none_or(|(x, y)| x != y) { return; } diff --git a/clippy_lints/src/methods/cloned_instead_of_copied.rs b/clippy_lints/src/methods/cloned_instead_of_copied.rs index fa04f74eec1..2a0a9d3710d 100644 --- a/clippy_lints/src/methods/cloned_instead_of_copied.rs +++ b/clippy_lints/src/methods/cloned_instead_of_copied.rs @@ -1,6 +1,6 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::is_trait_method; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::ty::{get_iterator_item_ty, is_copy}; use rustc_errors::Applicability; use rustc_hir::Expr; diff --git a/clippy_lints/src/methods/err_expect.rs b/clippy_lints/src/methods/err_expect.rs index 3b1adb16b80..44b55570eea 100644 --- a/clippy_lints/src/methods/err_expect.rs +++ b/clippy_lints/src/methods/err_expect.rs @@ -1,6 +1,6 @@ use super::ERR_EXPECT; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::ty::{has_debug_impl, is_type_diagnostic_item}; use rustc_errors::Applicability; use rustc_lint::LateContext; diff --git a/clippy_lints/src/methods/filter_map_next.rs b/clippy_lints/src/methods/filter_map_next.rs index f94fe221833..3f89e593148 100644 --- a/clippy_lints/src/methods/filter_map_next.rs +++ b/clippy_lints/src/methods/filter_map_next.rs @@ -1,6 +1,6 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg}; use clippy_utils::is_trait_method; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet; use rustc_errors::Applicability; use rustc_hir as hir; diff --git a/clippy_lints/src/methods/is_digit_ascii_radix.rs b/clippy_lints/src/methods/is_digit_ascii_radix.rs index 40b48ccca5d..d8bb9e377a0 100644 --- a/clippy_lints/src/methods/is_digit_ascii_radix.rs +++ b/clippy_lints/src/methods/is_digit_ascii_radix.rs @@ -1,7 +1,7 @@ use super::IS_DIGIT_ASCII_RADIX; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, FullInt}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_applicability; use rustc_errors::Applicability; use rustc_hir::Expr; diff --git a/clippy_lints/src/methods/iter_kv_map.rs b/clippy_lints/src/methods/iter_kv_map.rs index 390dd24b505..299f6d10112 100644 --- a/clippy_lints/src/methods/iter_kv_map.rs +++ b/clippy_lints/src/methods/iter_kv_map.rs @@ -1,6 +1,6 @@ use super::ITER_KV_MAP; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::pat_is_wild; use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::is_type_diagnostic_item; diff --git a/clippy_lints/src/methods/manual_c_str_literals.rs b/clippy_lints/src/methods/manual_c_str_literals.rs index 22f4748de70..7d5ebdedd0c 100644 --- a/clippy_lints/src/methods/manual_c_str_literals.rs +++ b/clippy_lints/src/methods/manual_c_str_literals.rs @@ -1,6 +1,6 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::get_parent_expr; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet; use rustc_ast::{LitKind, StrStyle}; use rustc_errors::Applicability; diff --git a/clippy_lints/src/methods/manual_inspect.rs b/clippy_lints/src/methods/manual_inspect.rs index 7aa13d8d5b6..865a42b65c6 100644 --- a/clippy_lints/src/methods/manual_inspect.rs +++ b/clippy_lints/src/methods/manual_inspect.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::{IntoSpan, SpanRangeExt}; use clippy_utils::ty::get_field_by_name; use clippy_utils::visitors::{for_each_expr, for_each_expr_without_closures}; diff --git a/clippy_lints/src/methods/manual_is_variant_and.rs b/clippy_lints/src/methods/manual_is_variant_and.rs index c377abd6237..90e502f244f 100644 --- a/clippy_lints/src/methods/manual_is_variant_and.rs +++ b/clippy_lints/src/methods/manual_is_variant_and.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{Msrv, OPTION_RESULT_IS_VARIANT_AND}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet; use clippy_utils::ty::is_type_diagnostic_item; use rustc_errors::Applicability; @@ -36,7 +36,7 @@ pub(super) fn check<'tcx>( } // 4. msrv doesn't meet `OPTION_RESULT_IS_VARIANT_AND` - if !msrv.meets(OPTION_RESULT_IS_VARIANT_AND) { + if !msrv.meets(msrvs::OPTION_RESULT_IS_VARIANT_AND) { return; } diff --git a/clippy_lints/src/methods/manual_try_fold.rs b/clippy_lints/src/methods/manual_try_fold.rs index 31449d41770..4a48d4b547c 100644 --- a/clippy_lints/src/methods/manual_try_fold.rs +++ b/clippy_lints/src/methods/manual_try_fold.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::SpanRangeExt; use clippy_utils::ty::implements_trait; use clippy_utils::{is_from_proc_macro, is_trait_method}; diff --git a/clippy_lints/src/methods/map_clone.rs b/clippy_lints/src/methods/map_clone.rs index d5594b21db5..1252f7ccd35 100644 --- a/clippy_lints/src/methods/map_clone.rs +++ b/clippy_lints/src/methods/map_clone.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::{is_copy, is_type_diagnostic_item, should_call_clone_as_function}; use clippy_utils::{is_diag_trait_item, peel_blocks}; diff --git a/clippy_lints/src/methods/map_unwrap_or.rs b/clippy_lints/src/methods/map_unwrap_or.rs index 3226fa9cd3f..428da0cf107 100644 --- a/clippy_lints/src/methods/map_unwrap_or.rs +++ b/clippy_lints/src/methods/map_unwrap_or.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg}; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet; use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::usage::mutated_variables; diff --git a/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs b/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs index fc656fd78ba..80703618a11 100644 --- a/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs +++ b/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs @@ -1,6 +1,6 @@ use crate::methods::MAP_WITH_UNUSED_ARGUMENT_OVER_RANGES; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_applicability; use clippy_utils::sugg::Sugg; use clippy_utils::{eager_or_lazy, higher, usage}; diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs index 795e041ffd9..7d1d5d69c99 100644 --- a/clippy_lints/src/methods/mod.rs +++ b/clippy_lints/src/methods/mod.rs @@ -137,10 +137,10 @@ mod wrong_self_convention; mod zst_offset; use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::{span_lint, span_lint_and_help}; use clippy_utils::macros::FormatArgsStorage; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::ty::{contains_ty_adt_constructor_opaque, implements_trait, is_copy, is_type_diagnostic_item}; use clippy_utils::{contains_return, is_bool, is_trait_method, iter_input_pats, peel_blocks, return_ty}; pub use path_ends_with_ext::DEFAULT_ALLOWED_DOTFILES; @@ -4107,24 +4107,32 @@ declare_clippy_lint! { /// ### Why is this bad? /// Calls such as `opt.map_or(false, |val| val == 5)` are needlessly long and cumbersome, /// and can be reduced to, for example, `opt == Some(5)` assuming `opt` implements `PartialEq`. + /// Also, calls such as `opt.map_or(true, |val| val == 5)` can be reduced to + /// `opt.is_none_or(|val| val == 5)`. /// This lint offers readability and conciseness improvements. /// /// ### Example /// ```no_run - /// pub fn a(x: Option) -> bool { - /// x.map_or(false, |n| n == 5) + /// pub fn a(x: Option) -> (bool, bool) { + /// ( + /// x.map_or(false, |n| n == 5), + /// x.map_or(true, |n| n > 5), + /// ) /// } /// ``` /// Use instead: /// ```no_run - /// pub fn a(x: Option) -> bool { - /// x == Some(5) + /// pub fn a(x: Option) -> (bool, bool) { + /// ( + /// x == Some(5), + /// x.is_none_or(|n| n > 5), + /// ) /// } /// ``` - #[clippy::version = "1.75.0"] + #[clippy::version = "1.84.0"] pub UNNECESSARY_MAP_OR, style, - "reduce unnecessary pattern matching for constructs that implement `PartialEq`" + "reduce unnecessary calls to `.map_or(bool, …)`" } declare_clippy_lint! { @@ -4531,7 +4539,7 @@ impl<'tcx> LateLintPass<'tcx> for Methods { && method_config.output_type.matches(&sig.decl.output) // in case there is no first arg, since we already have checked the number of arguments // it's should be always true - && first_arg_ty_opt.map_or(true, |first_arg_ty| method_config + && first_arg_ty_opt.is_none_or(|first_arg_ty| method_config .self_kind.matches(cx, self_ty, first_arg_ty) ) && fn_header_equals(method_config.fn_header, sig.header) diff --git a/clippy_lints/src/methods/needless_collect.rs b/clippy_lints/src/methods/needless_collect.rs index c00b9b368c4..ea4984f83ad 100644 --- a/clippy_lints/src/methods/needless_collect.rs +++ b/clippy_lints/src/methods/needless_collect.rs @@ -203,7 +203,8 @@ fn is_is_empty_sig(cx: &LateContext<'_>, call_id: HirId) -> bool { fn iterates_same_ty<'tcx>(cx: &LateContext<'tcx>, iter_ty: Ty<'tcx>, collect_ty: Ty<'tcx>) -> bool { if let Some(iter_trait) = cx.tcx.get_diagnostic_item(sym::Iterator) && let Some(into_iter_trait) = cx.tcx.get_diagnostic_item(sym::IntoIterator) - && let Some(iter_item_ty) = make_normalized_projection(cx.tcx, cx.typing_env(), iter_trait, sym::Item, [iter_ty]) + && let Some(iter_item_ty) = + make_normalized_projection(cx.tcx, cx.typing_env(), iter_trait, sym::Item, [iter_ty]) && let Some(into_iter_item_proj) = make_projection(cx.tcx, into_iter_trait, sym::Item, [collect_ty]) && let Ok(into_iter_item_ty) = cx.tcx.try_normalize_erasing_regions( cx.typing_env(), diff --git a/clippy_lints/src/methods/option_as_ref_deref.rs b/clippy_lints/src/methods/option_as_ref_deref.rs index 998bdee0157..8d97d1c72a6 100644 --- a/clippy_lints/src/methods/option_as_ref_deref.rs +++ b/clippy_lints/src/methods/option_as_ref_deref.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet; use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::{path_to_local_id, peel_blocks}; diff --git a/clippy_lints/src/methods/option_map_unwrap_or.rs b/clippy_lints/src/methods/option_map_unwrap_or.rs index 528e2204cf8..7c4dc4ffb20 100644 --- a/clippy_lints/src/methods/option_map_unwrap_or.rs +++ b/clippy_lints/src/methods/option_map_unwrap_or.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::{is_copy, is_type_diagnostic_item}; use rustc_data_structures::fx::FxHashSet; diff --git a/clippy_lints/src/methods/path_ends_with_ext.rs b/clippy_lints/src/methods/path_ends_with_ext.rs index cfb823dbf5d..febd7fd5cf2 100644 --- a/clippy_lints/src/methods/path_ends_with_ext.rs +++ b/clippy_lints/src/methods/path_ends_with_ext.rs @@ -1,6 +1,6 @@ use super::PATH_ENDS_WITH_EXT; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet; use clippy_utils::ty::is_type_diagnostic_item; use rustc_ast::{LitKind, StrStyle}; diff --git a/clippy_lints/src/methods/str_splitn.rs b/clippy_lints/src/methods/str_splitn.rs index 1cee28e1986..c91be33b1cd 100644 --- a/clippy_lints/src/methods/str_splitn.rs +++ b/clippy_lints/src/methods/str_splitn.rs @@ -1,6 +1,6 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_context; use clippy_utils::usage::local_used_after_expr; use clippy_utils::visitors::{Descend, for_each_expr}; diff --git a/clippy_lints/src/methods/string_lit_chars_any.rs b/clippy_lints/src/methods/string_lit_chars_any.rs index cc0d432b799..cb719b34b1f 100644 --- a/clippy_lints/src/methods/string_lit_chars_any.rs +++ b/clippy_lints/src/methods/string_lit_chars_any.rs @@ -1,5 +1,5 @@ -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::SpanRangeExt; use clippy_utils::{is_from_proc_macro, is_trait_method, path_to_local}; use itertools::Itertools; diff --git a/clippy_lints/src/methods/unnecessary_filter_map.rs b/clippy_lints/src/methods/unnecessary_filter_map.rs index bab439015c5..3de51bc661e 100644 --- a/clippy_lints/src/methods/unnecessary_filter_map.rs +++ b/clippy_lints/src/methods/unnecessary_filter_map.rs @@ -23,7 +23,7 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'tcx>, a if let hir::ExprKind::Closure(&hir::Closure { body, .. }) = arg.kind { let body = cx.tcx.hir().body(body); let arg_id = body.params[0].pat.hir_id; - let mutates_arg = mutated_variables(body.value, cx).map_or(true, |used_mutably| used_mutably.contains(&arg_id)); + let mutates_arg = mutated_variables(body.value, cx).is_none_or(|used_mutably| used_mutably.contains(&arg_id)); let (clone_or_copy_needed, _) = clone_or_copy_needed(cx, body.params[0].pat, body.value); let (mut found_mapping, mut found_filtering) = check_expression(cx, arg_id, body.value); diff --git a/clippy_lints/src/methods/unnecessary_map_or.rs b/clippy_lints/src/methods/unnecessary_map_or.rs index adc27cd437f..1199d289761 100644 --- a/clippy_lints/src/methods/unnecessary_map_or.rs +++ b/clippy_lints/src/methods/unnecessary_map_or.rs @@ -1,8 +1,8 @@ use std::borrow::Cow; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::eager_or_lazy::switch_to_eager_eval; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_opt; use clippy_utils::sugg::{Sugg, make_binop}; use clippy_utils::ty::{get_type_diagnostic_name, implements_trait}; @@ -60,7 +60,7 @@ pub(super) fn check<'a>( Some(_) | None => return, }; - let (sugg, method) = if let ExprKind::Closure(map_closure) = map.kind + let (sugg, method, applicability) = if let ExprKind::Closure(map_closure) = map.kind && let closure_body = cx.tcx.hir().body(map_closure.body) && let closure_body_value = closure_body.value.peel_blocks() && let ExprKind::Binary(op, l, r) = closure_body_value.kind @@ -100,7 +100,7 @@ pub(super) fn check<'a>( .maybe_par() .into_string(); - (binop, "a standard comparison") + (binop, "a standard comparison", Applicability::MaybeIncorrect) } else if !def_bool && msrv.meets(msrvs::OPTION_RESULT_IS_VARIANT_AND) && let Some(recv_callsite) = snippet_opt(cx, recv.span.source_callsite()) @@ -110,6 +110,18 @@ pub(super) fn check<'a>( ( format!("{recv_callsite}.{suggested_name}({span_callsite})",), suggested_name, + Applicability::MachineApplicable, + ) + } else if def_bool + && matches!(variant, Variant::Some) + && msrv.meets(msrvs::IS_NONE_OR) + && let Some(recv_callsite) = snippet_opt(cx, recv.span.source_callsite()) + && let Some(span_callsite) = snippet_opt(cx, map.span.source_callsite()) + { + ( + format!("{recv_callsite}.is_none_or({span_callsite})"), + "is_none_or", + Applicability::MachineApplicable, ) } else { return; @@ -123,9 +135,9 @@ pub(super) fn check<'a>( cx, UNNECESSARY_MAP_OR, expr.span, - "this `map_or` is redundant", + "this `map_or` can be simplified", format!("use {method} instead"), sugg, - Applicability::MaybeIncorrect, + applicability, ); } diff --git a/clippy_lints/src/methods/unnecessary_to_owned.rs b/clippy_lints/src/methods/unnecessary_to_owned.rs index 84ea3554a35..d19064fd57e 100644 --- a/clippy_lints/src/methods/unnecessary_to_owned.rs +++ b/clippy_lints/src/methods/unnecessary_to_owned.rs @@ -1,7 +1,7 @@ use super::implicit_clone::is_clone_like; use super::unnecessary_iter_cloned::{self, is_into_iter}; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::{SpanRangeExt, snippet}; use clippy_utils::ty::{get_iterator_item_ty, implements_trait, is_copy, is_type_diagnostic_item, is_type_lang_item}; use clippy_utils::visitors::find_all_ret_expressions; diff --git a/clippy_lints/src/misc.rs b/clippy_lints/src/misc.rs index 408dbef9cb1..b856c929cf6 100644 --- a/clippy_lints/src/misc.rs +++ b/clippy_lints/src/misc.rs @@ -114,7 +114,7 @@ declare_clippy_lint! { /// let _ = FooStruct{}; /// } /// ``` - #[clippy::version = "pre 1.29.0"] + #[clippy::version = "1.83.0"] pub USED_UNDERSCORE_ITEMS, pedantic, "using a item which is prefixed with an underscore" @@ -351,7 +351,7 @@ fn used_underscore_binding<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { /// `unused_variables`'s idea /// of what it means for an expression to be "used". fn is_used(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { - get_parent_expr(cx, expr).map_or(true, |parent| match parent.kind { + get_parent_expr(cx, expr).is_none_or(|parent| match parent.kind { ExprKind::Assign(_, rhs, _) | ExprKind::AssignOp(_, _, rhs) => SpanlessEq::new(cx).eq_expr(rhs, expr), _ => is_used(cx, parent), }) diff --git a/clippy_lints/src/missing_const_for_fn.rs b/clippy_lints/src/missing_const_for_fn.rs index eea0459e026..121c4326d64 100644 --- a/clippy_lints/src/missing_const_for_fn.rs +++ b/clippy_lints/src/missing_const_for_fn.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::qualify_min_const_fn::is_min_const_fn; use clippy_utils::{fn_has_unsatisfiable_preds, is_entrypoint_fn, is_from_proc_macro, trait_ref_of_method}; use rustc_errors::Applicability; diff --git a/clippy_lints/src/missing_const_for_thread_local.rs b/clippy_lints/src/missing_const_for_thread_local.rs index c2f524a6353..9a44a3c980c 100644 --- a/clippy_lints/src/missing_const_for_thread_local.rs +++ b/clippy_lints/src/missing_const_for_thread_local.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::macros::macro_backtrace; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::qualify_min_const_fn::is_min_const_fn; use clippy_utils::source::snippet; use clippy_utils::{fn_has_unsatisfiable_preds, peel_blocks}; diff --git a/clippy_lints/src/needless_borrows_for_generic_args.rs b/clippy_lints/src/needless_borrows_for_generic_args.rs index 9ebef531bc5..f69913ddbfd 100644 --- a/clippy_lints/src/needless_borrows_for_generic_args.rs +++ b/clippy_lints/src/needless_borrows_for_generic_args.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::mir::{PossibleBorrowerMap, enclosing_mir, expr_local, local_assignments, used_exactly_once}; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_context; use clippy_utils::ty::{implements_trait, is_copy}; use clippy_utils::{DefinedTy, ExprUseNode, expr_use_ctxt, peel_n_hir_expr_refs}; @@ -362,7 +362,7 @@ fn referent_used_exactly_once<'tcx>( let body_owner_local_def_id = cx.tcx.hir().enclosing_body_owner(reference.hir_id); if possible_borrowers .last() - .map_or(true, |&(local_def_id, _)| local_def_id != body_owner_local_def_id) + .is_none_or(|&(local_def_id, _)| local_def_id != body_owner_local_def_id) { possible_borrowers.push((body_owner_local_def_id, PossibleBorrowerMap::new(cx, mir))); } diff --git a/clippy_lints/src/needless_pass_by_value.rs b/clippy_lints/src/needless_pass_by_value.rs index b65ec8c3c48..cd90d2f90f7 100644 --- a/clippy_lints/src/needless_pass_by_value.rs +++ b/clippy_lints/src/needless_pass_by_value.rs @@ -182,14 +182,9 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue { && !is_copy(cx, ty) && ty.is_sized(cx.tcx, cx.typing_env()) && !allowed_traits.iter().any(|&t| { - implements_trait_with_env_from_iter( - cx.tcx, - cx.typing_env(), - ty, - t, - None, - [None::>] - ) + implements_trait_with_env_from_iter(cx.tcx, cx.typing_env(), ty, t, None, [None::< + ty::GenericArg<'tcx>, + >]) }) && !implements_borrow_trait && !all_borrowable_trait diff --git a/clippy_lints/src/no_effect.rs b/clippy_lints/src/no_effect.rs index 74536028b5d..8ecff9c3f9b 100644 --- a/clippy_lints/src/no_effect.rs +++ b/clippy_lints/src/no_effect.rs @@ -238,7 +238,7 @@ fn has_no_effect(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { ExprKind::Struct(_, fields, ref base) => { !has_drop(cx, cx.typeck_results().expr_ty(expr)) && fields.iter().all(|field| has_no_effect(cx, field.expr)) - && base.as_ref().map_or(true, |base| has_no_effect(cx, base)) + && base.as_ref().is_none_or(|base| has_no_effect(cx, base)) }, ExprKind::Call(callee, args) => { if let ExprKind::Path(ref qpath) = callee.kind { diff --git a/clippy_lints/src/non_copy_const.rs b/clippy_lints/src/non_copy_const.rs index 5416e00fe0c..5f253b9e5d5 100644 --- a/clippy_lints/src/non_copy_const.rs +++ b/clippy_lints/src/non_copy_const.rs @@ -278,7 +278,12 @@ impl<'tcx> NonCopyConst<'tcx> { fn is_value_unfrozen_expr(cx: &LateContext<'tcx>, hir_id: HirId, def_id: DefId, ty: Ty<'tcx>) -> bool { let args = cx.typeck_results().node_args(hir_id); - let result = Self::const_eval_resolve(cx.tcx, cx.typing_env(), ty::UnevaluatedConst::new(def_id, args), DUMMY_SP); + let result = Self::const_eval_resolve( + cx.tcx, + cx.typing_env(), + ty::UnevaluatedConst::new(def_id, args), + DUMMY_SP, + ); Self::is_value_unfrozen_raw(cx, result, ty) } @@ -335,7 +340,7 @@ impl<'tcx> LateLintPass<'tcx> for NonCopyConst<'tcx> { // i.e. having an enum doesn't necessary mean a type has a frozen variant. // And, implementing it isn't a trivial task; it'll probably end up // re-implementing the trait predicate evaluation specific to `Freeze`. - && body_id_opt.map_or(true, |body_id| Self::is_value_unfrozen_poly(cx, body_id, normalized)) + && body_id_opt.is_none_or(|body_id| Self::is_value_unfrozen_poly(cx, body_id, normalized)) { lint(cx, Source::Assoc { item: trait_item.span }); } diff --git a/clippy_lints/src/non_zero_suggestions.rs b/clippy_lints/src/non_zero_suggestions.rs index aefb665b52e..f6ce1d1d586 100644 --- a/clippy_lints/src/non_zero_suggestions.rs +++ b/clippy_lints/src/non_zero_suggestions.rs @@ -39,7 +39,7 @@ declare_clippy_lint! { /// let r2 = x % NonZeroU64::from(y); /// } /// ``` - #[clippy::version = "1.81.0"] + #[clippy::version = "1.83.0"] pub NON_ZERO_SUGGESTIONS, restriction, "suggests using `NonZero#` from `u#` or `i#` for more efficient and type-safe conversions" diff --git a/clippy_lints/src/only_used_in_recursion.rs b/clippy_lints/src/only_used_in_recursion.rs index 13b3d240700..6de203e068b 100644 --- a/clippy_lints/src/only_used_in_recursion.rs +++ b/clippy_lints/src/only_used_in_recursion.rs @@ -200,7 +200,7 @@ impl Params { if self .get_by_fn(param.fn_id, usage.idx) // If the parameter can't be found, then it's used for more than just recursion. - .map_or(true, |p| self.try_disable_lint_for_param(p, eval_stack)) + .is_none_or(|p| self.try_disable_lint_for_param(p, eval_stack)) { param.apply_lint.set(false); eval_stack.pop(); diff --git a/clippy_lints/src/operators/assign_op_pattern.rs b/clippy_lints/src/operators/assign_op_pattern.rs index 0dcaec1c9a7..1315c3dfc12 100644 --- a/clippy_lints/src/operators/assign_op_pattern.rs +++ b/clippy_lints/src/operators/assign_op_pattern.rs @@ -27,7 +27,7 @@ pub(super) fn check<'tcx>( if let Some((_, lang_item)) = binop_traits(op.node) && let Some(trait_id) = cx.tcx.lang_items().get(lang_item) && let parent_fn = cx.tcx.hir().get_parent_item(e.hir_id).def_id - && trait_ref_of_method(cx, parent_fn).map_or(true, |t| t.path.res.def_id() != trait_id) + && trait_ref_of_method(cx, parent_fn).is_none_or(|t| t.path.res.def_id() != trait_id) && implements_trait(cx, ty, trait_id, &[rty.into()]) { // Primitive types execute assign-ops right-to-left. Every other type is left-to-right. diff --git a/clippy_lints/src/operators/bit_mask.rs b/clippy_lints/src/operators/bit_mask.rs index 4414056a467..e87cfd103c3 100644 --- a/clippy_lints/src/operators/bit_mask.rs +++ b/clippy_lints/src/operators/bit_mask.rs @@ -1,5 +1,6 @@ use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint; +use clippy_utils::is_from_proc_macro; use rustc_hir::{BinOpKind, Expr, ExprKind}; use rustc_lint::LateContext; use rustc_span::Span; @@ -35,9 +36,9 @@ fn invert_cmp(cmp: BinOpKind) -> BinOpKind { } } -fn check_compare(cx: &LateContext<'_>, bit_op: &Expr<'_>, cmp_op: BinOpKind, cmp_value: u128, span: Span) { +fn check_compare<'a>(cx: &LateContext<'a>, bit_op: &Expr<'a>, cmp_op: BinOpKind, cmp_value: u128, span: Span) { if let ExprKind::Binary(op, left, right) = &bit_op.kind { - if op.node != BinOpKind::BitAnd && op.node != BinOpKind::BitOr { + if op.node != BinOpKind::BitAnd && op.node != BinOpKind::BitOr || is_from_proc_macro(cx, bit_op) { return; } if let Some(mask) = fetch_int_literal(cx, right).or_else(|| fetch_int_literal(cx, left)) { diff --git a/clippy_lints/src/ptr.rs b/clippy_lints/src/ptr.rs index ecc095f3859..dec4c18a309 100644 --- a/clippy_lints/src/ptr.rs +++ b/clippy_lints/src/ptr.rs @@ -541,9 +541,7 @@ fn check_mut_from_ref<'tcx>(cx: &LateContext<'tcx>, sig: &FnSig<'_>, body: Optio .collect(); if let Some(args) = args && !args.is_empty() - && body.map_or(true, |body| { - sig.header.safety == Safety::Unsafe || contains_unsafe_block(cx, body.value) - }) + && body.is_none_or(|body| sig.header.safety == Safety::Unsafe || contains_unsafe_block(cx, body.value)) { span_lint_and_then( cx, diff --git a/clippy_lints/src/question_mark.rs b/clippy_lints/src/question_mark.rs index f69cb9be4ca..4b96858d8f6 100644 --- a/clippy_lints/src/question_mark.rs +++ b/clippy_lints/src/question_mark.rs @@ -1,9 +1,9 @@ use crate::manual_let_else::MANUAL_LET_ELSE; use crate::question_mark_used::QUESTION_MARK_USED; use clippy_config::Conf; -use clippy_config::msrvs::Msrv; use clippy_config::types::MatchLintBehaviour; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::Msrv; use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::{implements_trait, is_type_diagnostic_item}; use clippy_utils::{ diff --git a/clippy_lints/src/ranges.rs b/clippy_lints/src/ranges.rs index 21cd3367262..1b0c0a4956f 100644 --- a/clippy_lints/src/ranges.rs +++ b/clippy_lints/src/ranges.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg, span_lint_and_then}; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::{SpanRangeExt, snippet, snippet_with_applicability}; use clippy_utils::sugg::Sugg; use clippy_utils::{get_parent_expr, higher, is_in_const_context, is_integer_const, path_to_local}; diff --git a/clippy_lints/src/redundant_async_block.rs b/clippy_lints/src/redundant_async_block.rs index 313e4083256..3ade6bcee84 100644 --- a/clippy_lints/src/redundant_async_block.rs +++ b/clippy_lints/src/redundant_async_block.rs @@ -88,7 +88,7 @@ fn desugar_async_block<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) -> Op cx.typeck_results() .closure_min_captures .get(def_id) - .map_or(true, |m| { + .is_none_or(|m| { m.values().all(|places| { places .iter() diff --git a/clippy_lints/src/redundant_field_names.rs b/clippy_lints/src/redundant_field_names.rs index d0dbff081f9..347540e7344 100644 --- a/clippy_lints/src/redundant_field_names.rs +++ b/clippy_lints/src/redundant_field_names.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::{self, Msrv}; use rustc_ast::ast::{Expr, ExprKind}; use rustc_errors::Applicability; use rustc_lint::{EarlyContext, EarlyLintPass, LintContext}; diff --git a/clippy_lints/src/redundant_static_lifetimes.rs b/clippy_lints/src/redundant_static_lifetimes.rs index b27bb2e78af..06c85433806 100644 --- a/clippy_lints/src/redundant_static_lifetimes.rs +++ b/clippy_lints/src/redundant_static_lifetimes.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet; use rustc_ast::ast::{ConstItem, Item, ItemKind, StaticItem, Ty, TyKind}; use rustc_errors::Applicability; diff --git a/clippy_lints/src/single_call_fn.rs b/clippy_lints/src/single_call_fn.rs index abe13a97c0d..0176077c70e 100644 --- a/clippy_lints/src/single_call_fn.rs +++ b/clippy_lints/src/single_call_fn.rs @@ -93,7 +93,7 @@ impl SingleCallFn { .tcx .hir() .maybe_body_owned_by(fn_def_id) - .map_or(true, |body| is_in_test_function(cx.tcx, body.value.hir_id)) + .is_none_or(|body| is_in_test_function(cx.tcx, body.value.hir_id)) || match cx.tcx.hir_node(fn_hir_id) { Node::Item(item) => is_from_proc_macro(cx, item), Node::ImplItem(item) => is_from_proc_macro(cx, item), diff --git a/clippy_lints/src/std_instead_of_core.rs b/clippy_lints/src/std_instead_of_core.rs index 8dd99858793..2941b9c3960 100644 --- a/clippy_lints/src/std_instead_of_core.rs +++ b/clippy_lints/src/std_instead_of_core.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::Msrv; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_from_proc_macro; +use clippy_utils::msrvs::Msrv; use rustc_attr::{StabilityLevel, StableSince}; use rustc_errors::Applicability; use rustc_hir::def::Res; diff --git a/clippy_lints/src/string_patterns.rs b/clippy_lints/src/string_patterns.rs index ba2ddac2ec3..0d85b1b858a 100644 --- a/clippy_lints/src/string_patterns.rs +++ b/clippy_lints/src/string_patterns.rs @@ -1,10 +1,10 @@ use std::ops::ControlFlow; use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; use clippy_utils::eager_or_lazy::switch_to_eager_eval; use clippy_utils::macros::matching_root_macro_call; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::path_to_local_id; use clippy_utils::source::{snippet, str_literal_to_char_literal}; use clippy_utils::visitors::{Descend, for_each_expr}; diff --git a/clippy_lints/src/trailing_empty_array.rs b/clippy_lints/src/trailing_empty_array.rs index 50a1577b288..a1d92c3ac71 100644 --- a/clippy_lints/src/trailing_empty_array.rs +++ b/clippy_lints/src/trailing_empty_array.rs @@ -56,9 +56,10 @@ impl<'tcx> LateLintPass<'tcx> for TrailingEmptyArray { fn is_struct_with_trailing_zero_sized_array<'tcx>(cx: &LateContext<'tcx>, item: &Item<'tcx>) -> bool { if let ItemKind::Struct(data, _) = &item.kind && let Some(last_field) = data.fields().last() - && let field_ty = cx - .tcx - .normalize_erasing_regions(cx.typing_env(), cx.tcx.type_of(last_field.def_id).instantiate_identity()) + && let field_ty = cx.tcx.normalize_erasing_regions( + cx.typing_env(), + cx.tcx.type_of(last_field.def_id).instantiate_identity(), + ) && let ty::Array(_, array_len) = *field_ty.kind() && let Some(0) = array_len.try_to_target_usize(cx.tcx) { diff --git a/clippy_lints/src/trait_bounds.rs b/clippy_lints/src/trait_bounds.rs index 6f3c6682305..99844beb8f0 100644 --- a/clippy_lints/src/trait_bounds.rs +++ b/clippy_lints/src/trait_bounds.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_sugg}; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::{SpanRangeExt, snippet, snippet_with_applicability}; use clippy_utils::{SpanlessEq, SpanlessHash, is_from_proc_macro}; use core::hash::{Hash, Hasher}; diff --git a/clippy_lints/src/transmute/mod.rs b/clippy_lints/src/transmute/mod.rs index 25fec9f688c..1cb0f837227 100644 --- a/clippy_lints/src/transmute/mod.rs +++ b/clippy_lints/src/transmute/mod.rs @@ -20,8 +20,8 @@ mod utils; mod wrong_transmute; use clippy_config::Conf; -use clippy_config::msrvs::Msrv; use clippy_utils::is_in_const_context; +use clippy_utils::msrvs::Msrv; use rustc_hir::{Expr, ExprKind, QPath}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; diff --git a/clippy_lints/src/transmute/transmute_float_to_int.rs b/clippy_lints/src/transmute/transmute_float_to_int.rs index 3507eb9a124..f0b8abf9af6 100644 --- a/clippy_lints/src/transmute/transmute_float_to_int.rs +++ b/clippy_lints/src/transmute/transmute_float_to_int.rs @@ -1,6 +1,6 @@ use super::TRANSMUTE_FLOAT_TO_INT; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::sugg; use rustc_ast as ast; use rustc_errors::Applicability; diff --git a/clippy_lints/src/transmute/transmute_int_to_float.rs b/clippy_lints/src/transmute/transmute_int_to_float.rs index c5c7ed6d398..e5b9aea6423 100644 --- a/clippy_lints/src/transmute/transmute_int_to_float.rs +++ b/clippy_lints/src/transmute/transmute_int_to_float.rs @@ -1,6 +1,6 @@ use super::TRANSMUTE_INT_TO_FLOAT; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::sugg; use rustc_errors::Applicability; use rustc_hir::Expr; diff --git a/clippy_lints/src/transmute/transmute_num_to_bytes.rs b/clippy_lints/src/transmute/transmute_num_to_bytes.rs index a94cd27c7fd..6d828bad9b3 100644 --- a/clippy_lints/src/transmute/transmute_num_to_bytes.rs +++ b/clippy_lints/src/transmute/transmute_num_to_bytes.rs @@ -1,6 +1,6 @@ use super::TRANSMUTE_NUM_TO_BYTES; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::sugg; use rustc_errors::Applicability; use rustc_hir::Expr; diff --git a/clippy_lints/src/transmute/transmute_ptr_to_ptr.rs b/clippy_lints/src/transmute/transmute_ptr_to_ptr.rs index bf6700b1b6b..c4a2e20fa9d 100644 --- a/clippy_lints/src/transmute/transmute_ptr_to_ptr.rs +++ b/clippy_lints/src/transmute/transmute_ptr_to_ptr.rs @@ -1,6 +1,6 @@ use super::TRANSMUTE_PTR_TO_PTR; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::sugg; use rustc_errors::Applicability; use rustc_hir::Expr; diff --git a/clippy_lints/src/transmute/transmute_ptr_to_ref.rs b/clippy_lints/src/transmute/transmute_ptr_to_ref.rs index eaf927c0005..ef18633d945 100644 --- a/clippy_lints/src/transmute/transmute_ptr_to_ref.rs +++ b/clippy_lints/src/transmute/transmute_ptr_to_ref.rs @@ -1,6 +1,6 @@ use super::TRANSMUTE_PTR_TO_REF; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_applicability; use clippy_utils::sugg; use rustc_errors::Applicability; diff --git a/clippy_lints/src/transmute/transmutes_expressible_as_ptr_casts.rs b/clippy_lints/src/transmute/transmutes_expressible_as_ptr_casts.rs index cad15b1e982..8d71036084d 100644 --- a/clippy_lints/src/transmute/transmutes_expressible_as_ptr_casts.rs +++ b/clippy_lints/src/transmute/transmutes_expressible_as_ptr_casts.rs @@ -44,7 +44,8 @@ pub(super) fn check<'tcx>( }; if let Node::Expr(parent) = cx.tcx.parent_hir_node(e.hir_id) - && parent.precedence() > AssocOp::As.precedence() as i8 + && parent.precedence() + > i8::try_from(AssocOp::As.precedence()).expect("AssocOp always returns a precedence < 128") { sugg = format!("({sugg})"); } diff --git a/clippy_lints/src/tuple_array_conversions.rs b/clippy_lints/src/tuple_array_conversions.rs index 07d0f59b91c..99a55f9fc35 100644 --- a/clippy_lints/src/tuple_array_conversions.rs +++ b/clippy_lints/src/tuple_array_conversions.rs @@ -1,6 +1,6 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_help; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::visitors::for_each_local_use_after_expr; use clippy_utils::{is_from_proc_macro, path_to_local}; use itertools::Itertools; diff --git a/clippy_lints/src/undocumented_unsafe_blocks.rs b/clippy_lints/src/undocumented_unsafe_blocks.rs index 0bba611116b..b79e59f857b 100644 --- a/clippy_lints/src/undocumented_unsafe_blocks.rs +++ b/clippy_lints/src/undocumented_unsafe_blocks.rs @@ -337,7 +337,7 @@ fn is_unsafe_from_proc_macro(cx: &LateContext<'_>, span: Span) -> bool { .src .as_deref() .and_then(|src| src.get(file_pos.pos.to_usize()..)) - .map_or(true, |src| !src.starts_with("unsafe")) + .is_none_or(|src| !src.starts_with("unsafe")) } // Checks if any parent {expression, statement, block, local, const, static} diff --git a/clippy_lints/src/unit_types/let_unit_value.rs b/clippy_lints/src/unit_types/let_unit_value.rs index 6eef582b4b2..0702f6d1e74 100644 --- a/clippy_lints/src/unit_types/let_unit_value.rs +++ b/clippy_lints/src/unit_types/let_unit_value.rs @@ -145,7 +145,7 @@ fn expr_needs_inferred_result<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) - } while let Some(id) = locals_to_check.pop() { if let Node::LetStmt(l) = cx.tcx.parent_hir_node(id) { - if !l.ty.map_or(true, |ty| matches!(ty.kind, TyKind::Infer)) { + if !l.ty.is_none_or(|ty| matches!(ty.kind, TyKind::Infer)) { return false; } if let Some(e) = l.init { diff --git a/clippy_lints/src/unnested_or_patterns.rs b/clippy_lints/src/unnested_or_patterns.rs index c7c837de505..9d26bf930a1 100644 --- a/clippy_lints/src/unnested_or_patterns.rs +++ b/clippy_lints/src/unnested_or_patterns.rs @@ -1,9 +1,9 @@ #![allow(clippy::wildcard_imports, clippy::enum_glob_use)] use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::ast_utils::{eq_field_pat, eq_id, eq_maybe_qself, eq_pat, eq_path}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::over; use rustc_ast::PatKind::*; use rustc_ast::mut_visit::*; diff --git a/clippy_lints/src/unused_trait_names.rs b/clippy_lints/src/unused_trait_names.rs index 9fd6ebccd02..17ee5fc20ca 100644 --- a/clippy_lints/src/unused_trait_names.rs +++ b/clippy_lints/src/unused_trait_names.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::is_from_proc_macro; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_opt; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; diff --git a/clippy_lints/src/upper_case_acronyms.rs b/clippy_lints/src/upper_case_acronyms.rs index 8de062a8fc1..c3843279ba2 100644 --- a/clippy_lints/src/upper_case_acronyms.rs +++ b/clippy_lints/src/upper_case_acronyms.rs @@ -93,7 +93,7 @@ fn check_ident(cx: &LateContext<'_>, ident: &Ident, hir_id: HirId, be_aggressive while let Some(c) = s.next() { r.push( if replace(&mut prev_upper, c.is_ascii_uppercase()) - && s.clone().next().map_or(true, |c| c.is_ascii_uppercase()) + && s.clone().next().is_none_or(|c| c.is_ascii_uppercase()) { c.to_ascii_lowercase() } else { diff --git a/clippy_lints/src/use_self.rs b/clippy_lints/src/use_self.rs index f5cf4a586fd..05c5be03002 100644 --- a/clippy_lints/src/use_self.rs +++ b/clippy_lints/src/use_self.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::is_from_proc_macro; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::ty::same_type_and_consts; use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; @@ -94,7 +94,7 @@ impl<'tcx> LateLintPass<'tcx> for UseSelf { && let parameters = &item_path.segments.last().expect(SEGMENTS_MSG).args && parameters .as_ref() - .map_or(true, |params| params.parenthesized == GenericArgsParentheses::No) + .is_none_or(|params| params.parenthesized == GenericArgsParentheses::No) && !item.span.from_expansion() && !is_from_proc_macro(cx, item) // expensive, should be last check diff --git a/clippy_lints/src/utils/internal_lints/invalid_paths.rs b/clippy_lints/src/utils/internal_lints/invalid_paths.rs index 96397375d5e..a5fad68eea1 100644 --- a/clippy_lints/src/utils/internal_lints/invalid_paths.rs +++ b/clippy_lints/src/utils/internal_lints/invalid_paths.rs @@ -5,8 +5,8 @@ use rustc_hir as hir; use rustc_hir::Item; use rustc_hir::def::DefKind; use rustc_lint::{LateContext, LateLintPass}; -use rustc_middle::ty::FloatTy; use rustc_middle::ty::fast_reject::SimplifiedType; +use rustc_middle::ty::{self, FloatTy}; use rustc_session::declare_lint_pass; use rustc_span::symbol::Symbol; @@ -32,9 +32,12 @@ impl<'tcx> LateLintPass<'tcx> for InvalidPaths { let mod_name = &cx.tcx.item_name(local_def_id.to_def_id()); if mod_name.as_str() == "paths" && let hir::ItemKind::Const(.., body_id) = item.kind - && let Some(Constant::Vec(path)) = - ConstEvalCtxt::with_env(cx.tcx, cx.tcx.param_env(item.owner_id), cx.tcx.typeck(item.owner_id)) - .eval_simple(cx.tcx.hir().body(body_id).value) + && let Some(Constant::Vec(path)) = ConstEvalCtxt::with_env( + cx.tcx, + ty::TypingEnv::post_analysis(cx.tcx, item.owner_id), + cx.tcx.typeck(item.owner_id), + ) + .eval_simple(cx.tcx.hir().body(body_id).value) && let Some(path) = path .iter() .map(|x| { diff --git a/clippy_lints/src/vec.rs b/clippy_lints/src/vec.rs index 9bcff9d7bce..ef1c46154d2 100644 --- a/clippy_lints/src/vec.rs +++ b/clippy_lints/src/vec.rs @@ -2,9 +2,9 @@ use std::collections::BTreeMap; use std::ops::ControlFlow; use clippy_config::Conf; -use clippy_config::msrvs::{self, Msrv}; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint_hir_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::SpanRangeExt; use clippy_utils::ty::is_copy; use clippy_utils::visitors::for_each_local_use_after_expr; diff --git a/clippy_lints/src/zombie_processes.rs b/clippy_lints/src/zombie_processes.rs index 8d9241cc7d9..4a13c10166f 100644 --- a/clippy_lints/src/zombie_processes.rs +++ b/clippy_lints/src/zombie_processes.rs @@ -35,7 +35,7 @@ declare_clippy_lint! { /// let mut child = Command::new("ls").spawn().expect("failed to execute child"); /// child.wait().expect("failed to wait on child"); /// ``` - #[clippy::version = "1.74.0"] + #[clippy::version = "1.83.0"] pub ZOMBIE_PROCESSES, suspicious, "not waiting on a spawned child process" diff --git a/clippy_utils/Cargo.toml b/clippy_utils/Cargo.toml index d8d5733da1c..945827c98c1 100644 --- a/clippy_utils/Cargo.toml +++ b/clippy_utils/Cargo.toml @@ -1,15 +1,22 @@ [package] name = "clippy_utils" -version = "0.1.84" +# begin autogenerated version +version = "0.1.85" +# end autogenerated version edition = "2021" -publish = false +description = "Helpful tools for writing lints, provided as they are used in Clippy" +repository = "https://github.com/rust-lang/rust-clippy" +readme = "README.md" +license = "MIT OR Apache-2.0" +keywords = ["clippy", "lint", "utils"] +categories = ["development-tools"] [dependencies] -clippy_config = { path = "../clippy_config" } arrayvec = { version = "0.7", default-features = false } itertools = "0.12" # FIXME(f16_f128): remove when no longer needed for parsing rustc_apfloat = "0.2.0" +serde = { version = "1.0", features = ["derive"] } [package.metadata.rust-analyzer] # This crate uses #[feature(rustc_private)] diff --git a/clippy_utils/README.md b/clippy_utils/README.md new file mode 100644 index 00000000000..61476a82ba0 --- /dev/null +++ b/clippy_utils/README.md @@ -0,0 +1,40 @@ +# `clippy-utils` + +Helpful tools for writing lints, provided as they are used in Clippy. + +## Usage + +This crate is only guaranteed to build with this `nightly` toolchain: + + +``` +nightly-2024-11-28 +``` + + +To use `clippy-utils` in your lint, add the following to your `Cargo.toml`: + +``` +clippy_utils = "0.1.XY" +``` + +`XY` is the version of the nightly toolchain above and can be determined with `rustc +nightly-YYYY-MM-DD -V`. + +## :warning: Stability :warning: + +No stability guarantees are made for this crate! Use at your own risk. + +Function signatures can change or be removed without replacement without any prior notice. + +## LICENSE + + + +Copyright 2014-2024 The Rust Project Developers + +Licensed under the Apache License, Version 2.0 +<[https://www.apache.org/licenses/LICENSE-2.0](https://www.apache.org/licenses/LICENSE-2.0)> or the MIT license +<[https://opensource.org/licenses/MIT](https://opensource.org/licenses/MIT)>, at your option. Files in the project may +not be copied, modified, or distributed except according to those terms. + + diff --git a/clippy_utils/src/attrs.rs b/clippy_utils/src/attrs.rs index edc9c6ccdff..b2a6657baad 100644 --- a/clippy_utils/src/attrs.rs +++ b/clippy_utils/src/attrs.rs @@ -27,7 +27,10 @@ pub const BUILTIN_ATTRIBUTES: &[(&str, DeprecationStatus)] = &[ ("cyclomatic_complexity", DeprecationStatus::Replaced("cognitive_complexity")), ("dump", DeprecationStatus::None), ("msrv", DeprecationStatus::None), + // The following attributes are for the 3rd party crate authors. + // See book/src/attribs.md ("has_significant_drop", DeprecationStatus::None), + ("format_args", DeprecationStatus::None), ]; pub struct LimitStack { diff --git a/clippy_utils/src/consts.rs b/clippy_utils/src/consts.rs index 52c98646289..43ddf06730d 100644 --- a/clippy_utils/src/consts.rs +++ b/clippy_utils/src/consts.rs @@ -226,7 +226,7 @@ impl Constant<'_> { .zip(r) .zip(tys) .map(|((li, ri), cmp_type)| Self::partial_cmp(tcx, cmp_type, li, ri)) - .find(|r| r.map_or(true, |o| o != Ordering::Equal)) + .find(|r| r.is_none_or(|o| o != Ordering::Equal)) .unwrap_or_else(|| Some(l.len().cmp(&r.len()))), _ => None, }, @@ -236,7 +236,7 @@ impl Constant<'_> { }; iter::zip(l, r) .map(|(li, ri)| Self::partial_cmp(tcx, cmp_type, li, ri)) - .find(|r| r.map_or(true, |o| o != Ordering::Equal)) + .find(|r| r.is_none_or(|o| o != Ordering::Equal)) .unwrap_or_else(|| Some(l.len().cmp(&r.len()))) }, (Self::Repeat(lv, ls), Self::Repeat(rv, rs)) => { diff --git a/clippy_utils/src/hir_utils.rs b/clippy_utils/src/hir_utils.rs index ea866a78d87..8a88a24e924 100644 --- a/clippy_utils/src/hir_utils.rs +++ b/clippy_utils/src/hir_utils.rs @@ -545,7 +545,7 @@ impl HirEqInterExpr<'_, '_, '_> { fn eq_path_parameters(&mut self, left: &GenericArgs<'_>, right: &GenericArgs<'_>) -> bool { if left.parenthesized == right.parenthesized { over(left.args, right.args, |l, r| self.eq_generic_arg(l, r)) // FIXME(flip1995): may not work - && over(left.constraints, right.constraints, |l, r| self.eq_assoc_type_binding(l, r)) + && over(left.constraints, right.constraints, |l, r| self.eq_assoc_eq_constraint(l, r)) } else { false } @@ -602,12 +602,13 @@ impl HirEqInterExpr<'_, '_, '_> { } } - fn eq_assoc_type_binding(&mut self, left: &AssocItemConstraint<'_>, right: &AssocItemConstraint<'_>) -> bool { + /// Checks whether two constraints designate the same equality constraint (same name, and same + /// type or const). + fn eq_assoc_eq_constraint(&mut self, left: &AssocItemConstraint<'_>, right: &AssocItemConstraint<'_>) -> bool { + // TODO: this could be extended to check for identical associated item bound constraints left.ident.name == right.ident.name - && self.eq_ty( - left.ty().expect("expected assoc type binding"), - right.ty().expect("expected assoc type binding"), - ) + && (both_some_and(left.ty(), right.ty(), |l, r| self.eq_ty(l, r)) + || both_some_and(left.ct(), right.ct(), |l, r| self.eq_const_arg(l, r))) } fn check_ctxt(&mut self, left: SyntaxContext, right: SyntaxContext) -> bool { @@ -727,6 +728,11 @@ pub fn both(l: Option<&X>, r: Option<&X>, mut eq_fn: impl FnMut(&X, &X) -> bo .map_or_else(|| r.is_none(), |x| r.as_ref().is_some_and(|y| eq_fn(x, y))) } +/// Checks if the two `Option`s are both `Some` and pass the predicate function. +pub fn both_some_and(l: Option, r: Option, mut pred: impl FnMut(X, Y) -> bool) -> bool { + l.is_some_and(|l| r.is_some_and(|r| pred(l, r))) +} + /// Checks if two slices are equal as per `eq_fn`. pub fn over(left: &[X], right: &[X], mut eq_fn: impl FnMut(&X, &X) -> bool) -> bool { left.len() == right.len() && left.iter().zip(right).all(|(x, y)| eq_fn(x, y)) diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs index 6408cc938cb..434c26d687d 100644 --- a/clippy_utils/src/lib.rs +++ b/clippy_utils/src/lib.rs @@ -50,6 +50,7 @@ extern crate rustc_session; extern crate rustc_span; extern crate rustc_target; extern crate rustc_trait_selection; +extern crate smallvec; #[macro_use] pub mod sym_helper; @@ -65,6 +66,7 @@ pub mod higher; mod hir_utils; pub mod macros; pub mod mir; +pub mod msrvs; pub mod numeric_literal; pub mod paths; pub mod ptr; @@ -89,7 +91,6 @@ use std::hash::BuildHasherDefault; use std::iter::{once, repeat}; use std::sync::{Mutex, MutexGuard, OnceLock}; -use clippy_config::types::DisallowedPath; use itertools::Itertools; use rustc_ast::ast::{self, LitKind, RangeLimits}; use rustc_data_structures::fx::FxHashMap; @@ -97,7 +98,7 @@ use rustc_data_structures::packed::Pu128; use rustc_data_structures::unhash::UnhashMap; use rustc_hir::LangItem::{OptionNone, OptionSome, ResultErr, ResultOk}; use rustc_hir::def::{DefKind, Res}; -use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, LOCAL_CRATE, LocalDefId, LocalModDefId}; +use rustc_hir::def_id::{CrateNum, DefId, LOCAL_CRATE, LocalDefId, LocalModDefId}; use rustc_hir::definitions::{DefPath, DefPathData}; use rustc_hir::hir_id::{HirIdMap, HirIdSet}; use rustc_hir::intravisit::{FnKind, Visitor, walk_expr}; @@ -116,8 +117,8 @@ use rustc_middle::ty::adjustment::{Adjust, Adjustment, AutoBorrow}; use rustc_middle::ty::fast_reject::SimplifiedType; use rustc_middle::ty::layout::IntegerExt; use rustc_middle::ty::{ - self as rustc_ty, Binder, BorrowKind, ClosureKind, EarlyBinder, FloatTy, GenericArgsRef, IntTy, - Ty, TyCtxt, TypeVisitableExt, UintTy, UpvarCapture, + self as rustc_ty, Binder, BorrowKind, ClosureKind, EarlyBinder, FloatTy, GenericArgsRef, IntTy, Ty, TyCtxt, + TypeVisitableExt, UintTy, UpvarCapture, }; use rustc_span::hygiene::{ExpnKind, MacroKind}; use rustc_span::source_map::SourceMap; @@ -748,18 +749,6 @@ pub fn def_path_def_ids(tcx: TyCtxt<'_>, path: &[&str]) -> impl Iterator, - disallowed: &'static [DisallowedPath], -) -> DefIdMap<(&'static str, Option<&'static str>)> { - disallowed - .iter() - .map(|x| (x.path(), x.path().split("::").collect::>(), x.reason())) - .flat_map(|(name, path, reason)| def_path_def_ids(tcx, &path).map(move |id| (id, (name, reason)))) - .collect() -} - /// Convenience function to get the `DefId` of a trait by path. /// It could be a trait or trait alias. /// @@ -1581,7 +1570,7 @@ pub fn is_else_clause_in_let_else(tcx: TyCtxt<'_>, expr: &Expr<'_>) -> bool { pub fn is_range_full(cx: &LateContext<'_>, expr: &Expr<'_>, container_path: Option<&Path<'_>>) -> bool { let ty = cx.typeck_results().expr_ty(expr); if let Some(Range { start, end, limits }) = Range::hir(expr) { - let start_is_none_or_min = start.map_or(true, |start| { + let start_is_none_or_min = start.is_none_or(|start| { if let rustc_ty::Adt(_, subst) = ty.kind() && let bnd_ty = subst.type_at(0) && let Some(min_val) = bnd_ty.numeric_min_val(cx.tcx) @@ -1593,7 +1582,7 @@ pub fn is_range_full(cx: &LateContext<'_>, expr: &Expr<'_>, container_path: Opti false } }); - let end_is_none_or_max = end.map_or(true, |end| match limits { + let end_is_none_or_max = end.is_none_or(|end| match limits { RangeLimits::Closed => { if let rustc_ty::Adt(_, subst) = ty.kind() && let bnd_ty = subst.type_at(0) @@ -2715,10 +2704,10 @@ pub enum DefinedTy<'tcx> { /// Used for function signatures, and constant and static values. The type is /// in the context of its definition site. We also track the `def_id` of its /// definition site. - /// + /// /// WARNING: As the `ty` in in the scope of the definition, not of the function /// using it, you must be very careful with how you use it. Using it in the wrong - /// scope easily results in ICEs. + /// scope easily results in ICEs. Mir { def_site_def_id: Option, ty: Binder<'tcx, Ty<'tcx>>, @@ -2844,7 +2833,7 @@ impl<'tcx> ExprUseNode<'tcx> { Self::ConstStatic(id) => Some(DefinedTy::Mir { def_site_def_id: Some(id.def_id.to_def_id()), ty: Binder::dummy(cx.tcx.type_of(id).instantiate_identity()), - }), + }), Self::Return(id) => { if let Node::Expr(Expr { kind: ExprKind::Closure(c), @@ -2857,7 +2846,10 @@ impl<'tcx> ExprUseNode<'tcx> { } } else { let ty = cx.tcx.fn_sig(id).instantiate_identity().output(); - Some(DefinedTy::Mir { def_site_def_id: Some(id.def_id.to_def_id()), ty }) + Some(DefinedTy::Mir { + def_site_def_id: Some(id.def_id.to_def_id()), + ty, + }) } }, Self::Field(field) => match get_parent_expr_for_hir(cx, field.hir_id) { @@ -2874,8 +2866,8 @@ impl<'tcx> ExprUseNode<'tcx> { .map(|f| (adt, f)) }) .map(|(adt, field_def)| DefinedTy::Mir { - def_site_def_id: Some(adt.did()), - ty: Binder::dummy(cx.tcx.type_of(field_def.did).instantiate_identity()), + def_site_def_id: Some(adt.did()), + ty: Binder::dummy(cx.tcx.type_of(field_def.did).instantiate_identity()), }), _ => None, }, @@ -2885,9 +2877,9 @@ impl<'tcx> ExprUseNode<'tcx> { Some(match hir_ty { Some(hir_ty) => DefinedTy::Hir(hir_ty), None => DefinedTy::Mir { - def_site_def_id: sig.predicates_id(), + def_site_def_id: sig.predicates_id(), ty, - } + }, }) }, Self::MethodArg(id, _, i) => { diff --git a/clippy_utils/src/macros.rs b/clippy_utils/src/macros.rs index 9c4d19ac1f1..45beb146eb6 100644 --- a/clippy_utils/src/macros.rs +++ b/clippy_utils/src/macros.rs @@ -1,5 +1,6 @@ #![allow(clippy::similar_names)] // `expr` and `expn` +use crate::get_unique_attr; use crate::visitors::{Descend, for_each_expr_without_closures}; use arrayvec::ArrayVec; @@ -7,7 +8,7 @@ use rustc_ast::{FormatArgs, FormatArgument, FormatPlaceholder}; use rustc_data_structures::fx::FxHashMap; use rustc_data_structures::sync::{Lrc, OnceLock}; use rustc_hir::{self as hir, Expr, ExprKind, HirId, Node, QPath}; -use rustc_lint::LateContext; +use rustc_lint::{LateContext, LintContext}; use rustc_span::def_id::DefId; use rustc_span::hygiene::{self, MacroKind, SyntaxContext}; use rustc_span::{BytePos, ExpnData, ExpnId, ExpnKind, Span, SpanData, Symbol, sym}; @@ -36,7 +37,9 @@ pub fn is_format_macro(cx: &LateContext<'_>, macro_def_id: DefId) -> bool { if let Some(name) = cx.tcx.get_diagnostic_name(macro_def_id) { FORMAT_MACRO_DIAG_ITEMS.contains(&name) } else { - false + // Allow users to tag any macro as being format!-like + // TODO: consider deleting FORMAT_MACRO_DIAG_ITEMS and using just this method + get_unique_attr(cx.sess(), cx.tcx.get_attrs_unchecked(macro_def_id), "format_args").is_some() } } @@ -93,7 +96,7 @@ pub fn expn_is_local(expn: ExpnId) -> bool { std::iter::once((expn, data)) .chain(backtrace) .find_map(|(_, data)| data.macro_def_id) - .map_or(true, DefId::is_local) + .is_none_or(DefId::is_local) } /// Returns an iterator of macro expansions that created the given span. diff --git a/clippy_utils/src/msrvs.rs b/clippy_utils/src/msrvs.rs new file mode 100644 index 00000000000..1eb7d54e133 --- /dev/null +++ b/clippy_utils/src/msrvs.rs @@ -0,0 +1,165 @@ +use rustc_ast::Attribute; +use rustc_attr::parse_version; +use rustc_session::{RustcVersion, Session}; +use rustc_span::{Symbol, sym}; +use serde::Deserialize; +use smallvec::{SmallVec, smallvec}; +use std::fmt; + +macro_rules! msrv_aliases { + ($($major:literal,$minor:literal,$patch:literal { + $($name:ident),* $(,)? + })*) => { + $($( + pub const $name: RustcVersion = RustcVersion { major: $major, minor :$minor, patch: $patch }; + )*)* + }; +} + +// names may refer to stabilized feature flags or library items +msrv_aliases! { + 1,83,0 { CONST_EXTERN_FN, CONST_FLOAT_BITS_CONV, CONST_FLOAT_CLASSIFY } + 1,82,0 { IS_NONE_OR, REPEAT_N } + 1,81,0 { LINT_REASONS_STABILIZATION } + 1,80,0 { BOX_INTO_ITER} + 1,77,0 { C_STR_LITERALS } + 1,76,0 { PTR_FROM_REF, OPTION_RESULT_INSPECT } + 1,73,0 { MANUAL_DIV_CEIL } + 1,71,0 { TUPLE_ARRAY_CONVERSIONS, BUILD_HASHER_HASH_ONE } + 1,70,0 { OPTION_RESULT_IS_VARIANT_AND, BINARY_HEAP_RETAIN } + 1,68,0 { PATH_MAIN_SEPARATOR_STR } + 1,65,0 { LET_ELSE, POINTER_CAST_CONSTNESS } + 1,63,0 { CLONE_INTO } + 1,62,0 { BOOL_THEN_SOME, DEFAULT_ENUM_ATTRIBUTE, CONST_EXTERN_C_FN } + 1,59,0 { THREAD_LOCAL_CONST_INIT } + 1,58,0 { FORMAT_ARGS_CAPTURE, PATTERN_TRAIT_CHAR_ARRAY, CONST_RAW_PTR_DEREF } + 1,56,0 { CONST_FN_UNION } + 1,55,0 { SEEK_REWIND } + 1,54,0 { INTO_KEYS } + 1,53,0 { OR_PATTERNS, MANUAL_BITS, BTREE_MAP_RETAIN, BTREE_SET_RETAIN, ARRAY_INTO_ITERATOR } + 1,52,0 { STR_SPLIT_ONCE, REM_EUCLID_CONST } + 1,51,0 { BORROW_AS_PTR, SEEK_FROM_CURRENT, UNSIGNED_ABS } + 1,50,0 { BOOL_THEN, CLAMP } + 1,47,0 { TAU, IS_ASCII_DIGIT_CONST, ARRAY_IMPL_ANY_LEN, SATURATING_SUB_CONST } + 1,46,0 { CONST_IF_MATCH } + 1,45,0 { STR_STRIP_PREFIX } + 1,43,0 { LOG2_10, LOG10_2, NUMERIC_ASSOCIATED_CONSTANTS } + 1,42,0 { MATCHES_MACRO, SLICE_PATTERNS, PTR_SLICE_RAW_PARTS } + 1,41,0 { RE_REBALANCING_COHERENCE, RESULT_MAP_OR_ELSE } + 1,40,0 { MEM_TAKE, NON_EXHAUSTIVE, OPTION_AS_DEREF } + 1,38,0 { POINTER_CAST, REM_EUCLID } + 1,37,0 { TYPE_ALIAS_ENUM_VARIANTS } + 1,36,0 { ITERATOR_COPIED } + 1,35,0 { OPTION_COPIED, RANGE_CONTAINS } + 1,34,0 { TRY_FROM } + 1,33,0 { UNDERSCORE_IMPORTS } + 1,30,0 { ITERATOR_FIND_MAP, TOOL_ATTRIBUTES } + 1,29,0 { ITER_FLATTEN } + 1,28,0 { FROM_BOOL, REPEAT_WITH } + 1,27,0 { ITERATOR_TRY_FOLD } + 1,26,0 { RANGE_INCLUSIVE, STRING_RETAIN } + 1,24,0 { IS_ASCII_DIGIT } + 1,18,0 { HASH_MAP_RETAIN, HASH_SET_RETAIN } + 1,17,0 { FIELD_INIT_SHORTHAND, STATIC_IN_CONST, EXPECT_ERR } + 1,16,0 { STR_REPEAT } + 1,15,0 { MAYBE_BOUND_IN_WHERE } +} + +/// Tracks the current MSRV from `clippy.toml`, `Cargo.toml` or set via `#[clippy::msrv]` +#[derive(Debug, Clone)] +pub struct Msrv { + stack: SmallVec<[RustcVersion; 2]>, +} + +impl fmt::Display for Msrv { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + if let Some(msrv) = self.current() { + write!(f, "{msrv}") + } else { + f.write_str("1.0.0") + } + } +} + +impl<'de> Deserialize<'de> for Msrv { + fn deserialize(deserializer: D) -> Result + where + D: serde::Deserializer<'de>, + { + let v = String::deserialize(deserializer)?; + parse_version(Symbol::intern(&v)) + .map(|v| Msrv { stack: smallvec![v] }) + .ok_or_else(|| serde::de::Error::custom("not a valid Rust version")) + } +} + +impl Msrv { + pub fn empty() -> Msrv { + Msrv { stack: SmallVec::new() } + } + + pub fn read_cargo(&mut self, sess: &Session) { + let cargo_msrv = std::env::var("CARGO_PKG_RUST_VERSION") + .ok() + .and_then(|v| parse_version(Symbol::intern(&v))); + + match (self.current(), cargo_msrv) { + (None, Some(cargo_msrv)) => self.stack = smallvec![cargo_msrv], + (Some(clippy_msrv), Some(cargo_msrv)) => { + if clippy_msrv != cargo_msrv { + sess.dcx().warn(format!( + "the MSRV in `clippy.toml` and `Cargo.toml` differ; using `{clippy_msrv}` from `clippy.toml`" + )); + } + }, + _ => {}, + } + } + + pub fn current(&self) -> Option { + self.stack.last().copied() + } + + pub fn meets(&self, required: RustcVersion) -> bool { + self.current().is_none_or(|msrv| msrv >= required) + } + + fn parse_attr(sess: &Session, attrs: &[Attribute]) -> Option { + let sym_msrv = Symbol::intern("msrv"); + let mut msrv_attrs = attrs.iter().filter(|attr| attr.path_matches(&[sym::clippy, sym_msrv])); + + if let Some(msrv_attr) = msrv_attrs.next() { + if let Some(duplicate) = msrv_attrs.last() { + sess.dcx() + .struct_span_err(duplicate.span, "`clippy::msrv` is defined multiple times") + .with_span_note(msrv_attr.span, "first definition found here") + .emit(); + } + + if let Some(msrv) = msrv_attr.value_str() { + if let Some(version) = parse_version(msrv) { + return Some(version); + } + + sess.dcx() + .span_err(msrv_attr.span, format!("`{msrv}` is not a valid Rust version")); + } else { + sess.dcx().span_err(msrv_attr.span, "bad clippy attribute"); + } + } + + None + } + + pub fn check_attributes(&mut self, sess: &Session, attrs: &[Attribute]) { + if let Some(version) = Self::parse_attr(sess, attrs) { + self.stack.push(version); + } + } + + pub fn check_attributes_post(&mut self, sess: &Session, attrs: &[Attribute]) { + if Self::parse_attr(sess, attrs).is_some() { + self.stack.pop(); + } + } +} diff --git a/clippy_utils/src/paths.rs b/clippy_utils/src/paths.rs index 11a98b02f33..bb40a9430a7 100644 --- a/clippy_utils/src/paths.rs +++ b/clippy_utils/src/paths.rs @@ -36,7 +36,7 @@ pub const CHILD_KILL: [&str; 4] = ["std", "process", "Child", "kill"]; pub const PANIC_ANY: [&str; 3] = ["std", "panic", "panic_any"]; // Paths in clippy itself -pub const MSRV: [&str; 3] = ["clippy_config", "msrvs", "Msrv"]; +pub const MSRV: [&str; 3] = ["clippy_utils", "msrvs", "Msrv"]; // Paths in external crates #[expect(clippy::invalid_paths)] // internal lints do not know about all external crates diff --git a/clippy_utils/src/qualify_min_const_fn.rs b/clippy_utils/src/qualify_min_const_fn.rs index 3c9ea4bfaf4..df3f10d6179 100644 --- a/clippy_utils/src/qualify_min_const_fn.rs +++ b/clippy_utils/src/qualify_min_const_fn.rs @@ -3,7 +3,7 @@ // of terminologies might not be relevant in the context of Clippy. Note that its behavior might // differ from the time of `rustc` even if the name stays the same. -use clippy_config::msrvs::{self, Msrv}; +use crate::msrvs::{self, Msrv}; use hir::LangItem; use rustc_attr::StableSince; use rustc_const_eval::check_consts::ConstCx; @@ -409,8 +409,7 @@ fn is_ty_const_destruct<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, body: &Body<'tcx> return false; } - let (infcx, param_env) = - tcx.infer_ctxt().build_with_typing_env(body.typing_env(tcx)); + let (infcx, param_env) = tcx.infer_ctxt().build_with_typing_env(body.typing_env(tcx)); // FIXME(const_trait_impl) constness let obligation = Obligation::new( tcx, diff --git a/clippy_utils/src/ty.rs b/clippy_utils/src/ty.rs index 03e1a814a86..39c9d234a1a 100644 --- a/clippy_utils/src/ty.rs +++ b/clippy_utils/src/ty.rs @@ -226,7 +226,14 @@ pub fn implements_trait<'tcx>( trait_id: DefId, args: &[GenericArg<'tcx>], ) -> bool { - implements_trait_with_env_from_iter(cx.tcx, cx.typing_env(), ty, trait_id, None, args.iter().map(|&x| Some(x))) + implements_trait_with_env_from_iter( + cx.tcx, + cx.typing_env(), + ty, + trait_id, + None, + args.iter().map(|&x| Some(x)), + ) } /// Same as `implements_trait` but allows using a `ParamEnv` different from the lint context. @@ -1262,7 +1269,8 @@ pub fn make_normalized_projection_with_regions<'tcx>( } let cause = ObligationCause::dummy(); let (infcx, param_env) = tcx.infer_ctxt().build_with_typing_env(typing_env); - match infcx.at(&cause, param_env) + match infcx + .at(&cause, param_env) .query_normalize(Ty::new_projection_from_args(tcx, ty.def_id, ty.args)) { Ok(ty) => Some(ty.value), @@ -1278,7 +1286,10 @@ pub fn make_normalized_projection_with_regions<'tcx>( pub fn normalize_with_regions<'tcx>(tcx: TyCtxt<'tcx>, typing_env: ty::TypingEnv<'tcx>, ty: Ty<'tcx>) -> Ty<'tcx> { let cause = ObligationCause::dummy(); let (infcx, param_env) = tcx.infer_ctxt().build_with_typing_env(typing_env); - infcx.at(&cause, param_env).query_normalize(ty).map_or(ty, |ty| ty.value) + infcx + .at(&cause, param_env) + .query_normalize(ty) + .map_or(ty, |ty| ty.value) } /// Checks if the type is `core::mem::ManuallyDrop<_>` diff --git a/clippy_utils/src/usage.rs b/clippy_utils/src/usage.rs index c8c25456f69..37f72966892 100644 --- a/clippy_utils/src/usage.rs +++ b/clippy_utils/src/usage.rs @@ -27,7 +27,7 @@ pub fn mutated_variables<'tcx>(expr: &'tcx Expr<'_>, cx: &LateContext<'tcx>) -> } pub fn is_potentially_mutated<'tcx>(variable: HirId, expr: &'tcx Expr<'_>, cx: &LateContext<'tcx>) -> bool { - mutated_variables(expr, cx).map_or(true, |mutated| mutated.contains(&variable)) + mutated_variables(expr, cx).is_none_or(|mutated| mutated.contains(&variable)) } pub fn is_potentially_local_place(local_id: HirId, place: &Place<'_>) -> bool { diff --git a/rust-toolchain b/rust-toolchain index e32e0cb3604..fb159ca2ae0 100644 --- a/rust-toolchain +++ b/rust-toolchain @@ -1,4 +1,6 @@ [toolchain] -channel = "nightly-2024-11-14" +# begin autogenerated nightly +channel = "nightly-2024-11-28" +# end autogenerated nightly components = ["cargo", "llvm-tools", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"] profile = "minimal" diff --git a/tests/ui-internal/invalid_msrv_attr_impl.fixed b/tests/ui-internal/invalid_msrv_attr_impl.fixed index 9b5bf736f13..928596d0809 100644 --- a/tests/ui-internal/invalid_msrv_attr_impl.fixed +++ b/tests/ui-internal/invalid_msrv_attr_impl.fixed @@ -8,8 +8,8 @@ extern crate rustc_lint; extern crate rustc_middle; #[macro_use] extern crate rustc_session; -use clippy_config::msrvs::Msrv; use clippy_utils::extract_msrv_attr; +use clippy_utils::msrvs::Msrv; use rustc_hir::Expr; use rustc_lint::{EarlyContext, EarlyLintPass, LateContext, LateLintPass}; diff --git a/tests/ui-internal/invalid_msrv_attr_impl.rs b/tests/ui-internal/invalid_msrv_attr_impl.rs index c5bde47e4ce..50b28648ccc 100644 --- a/tests/ui-internal/invalid_msrv_attr_impl.rs +++ b/tests/ui-internal/invalid_msrv_attr_impl.rs @@ -8,8 +8,8 @@ extern crate rustc_lint; extern crate rustc_middle; #[macro_use] extern crate rustc_session; -use clippy_config::msrvs::Msrv; use clippy_utils::extract_msrv_attr; +use clippy_utils::msrvs::Msrv; use rustc_hir::Expr; use rustc_lint::{EarlyContext, EarlyLintPass, LateContext, LateLintPass}; diff --git a/tests/ui/crashes/ice-10645.rs b/tests/ui/crashes/ice-10645.rs deleted file mode 100644 index 6e126aff751..00000000000 --- a/tests/ui/crashes/ice-10645.rs +++ /dev/null @@ -1,7 +0,0 @@ -//@compile-flags: --cap-lints=warn -// https://github.com/rust-lang/rust-clippy/issues/10645 - -#![warn(clippy::future_not_send)] -pub async fn bar<'a, T: 'a>(_: T) {} - -fn main() {} diff --git a/tests/ui/crashes/ice-10645.stderr b/tests/ui/crashes/ice-10645.stderr deleted file mode 100644 index 0269072b88b..00000000000 --- a/tests/ui/crashes/ice-10645.stderr +++ /dev/null @@ -1,17 +0,0 @@ -warning: future cannot be sent between threads safely - --> tests/ui/crashes/ice-10645.rs:5:1 - | -LL | pub async fn bar<'a, T: 'a>(_: T) {} - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ future returned by `bar` is not `Send` - | -note: captured value is not `Send` - --> tests/ui/crashes/ice-10645.rs:5:29 - | -LL | pub async fn bar<'a, T: 'a>(_: T) {} - | ^ has type `T` which is not `Send` - = note: `T` doesn't implement `std::marker::Send` - = note: `-D clippy::future-not-send` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::future_not_send)]` - -warning: 1 warning emitted - diff --git a/tests/ui/derivable_impls.fixed b/tests/ui/derivable_impls.fixed new file mode 100644 index 00000000000..c85f384fd6e --- /dev/null +++ b/tests/ui/derivable_impls.fixed @@ -0,0 +1,295 @@ +#![allow(dead_code)] + +use std::collections::HashMap; + +#[derive(Default)] +struct FooDefault<'a> { + a: bool, + b: i32, + c: u64, + d: Vec, + e: FooND1, + f: FooND2, + g: HashMap, + h: (i32, Vec), + i: [Vec; 3], + j: [i32; 5], + k: Option, + l: &'a [i32], +} + + +#[derive(Default)] +struct TupleDefault(bool, i32, u64); + + +struct FooND1 { + a: bool, +} + +impl std::default::Default for FooND1 { + fn default() -> Self { + Self { a: true } + } +} + +struct FooND2 { + a: i32, +} + +impl std::default::Default for FooND2 { + fn default() -> Self { + Self { a: 5 } + } +} + +struct FooNDNew { + a: bool, +} + +impl FooNDNew { + fn new() -> Self { + Self { a: true } + } +} + +impl Default for FooNDNew { + fn default() -> Self { + Self::new() + } +} + +struct FooNDVec(Vec); + +impl Default for FooNDVec { + fn default() -> Self { + Self(vec![5, 12]) + } +} + +#[derive(Default)] +struct StrDefault<'a>(&'a str); + + +#[derive(Default)] +struct AlreadyDerived(i32, bool); + +macro_rules! mac { + () => { + 0 + }; + ($e:expr) => { + struct X(u32); + impl Default for X { + fn default() -> Self { + Self($e) + } + } + }; +} + +mac!(0); + +#[derive(Default)] +struct Y(u32); + +struct RustIssue26925 { + a: Option, +} + +// We should watch out for cases where a manual impl is needed because a +// derive adds different type bounds (https://github.com/rust-lang/rust/issues/26925). +// For example, a struct with Option does not require T: Default, but a derive adds +// that type bound anyways. So until #26925 get fixed we should disable lint +// for the following case +impl Default for RustIssue26925 { + fn default() -> Self { + Self { a: None } + } +} + +struct SpecializedImpl { + a: A, + b: B, +} + +impl Default for SpecializedImpl { + fn default() -> Self { + Self { + a: T::default(), + b: T::default(), + } + } +} + +#[derive(Default)] +struct WithoutSelfCurly { + a: bool, +} + + +#[derive(Default)] +struct WithoutSelfParan(bool); + + +// https://github.com/rust-lang/rust-clippy/issues/7655 + +pub struct SpecializedImpl2 { + v: Vec, +} + +impl Default for SpecializedImpl2 { + fn default() -> Self { + Self { v: Vec::new() } + } +} + +// https://github.com/rust-lang/rust-clippy/issues/7654 + +pub struct Color { + pub r: u8, + pub g: u8, + pub b: u8, +} + +/// `#000000` +impl Default for Color { + fn default() -> Self { + Color { r: 0, g: 0, b: 0 } + } +} + +pub struct Color2 { + pub r: u8, + pub g: u8, + pub b: u8, +} + +impl Default for Color2 { + /// `#000000` + fn default() -> Self { + Self { r: 0, g: 0, b: 0 } + } +} + +#[derive(Default)] +pub struct RepeatDefault1 { + a: [i8; 32], +} + + +pub struct RepeatDefault2 { + a: [i8; 33], +} + +impl Default for RepeatDefault2 { + fn default() -> Self { + RepeatDefault2 { a: [0; 33] } + } +} + +// https://github.com/rust-lang/rust-clippy/issues/7753 + +pub enum IntOrString { + Int(i32), + String(String), +} + +impl Default for IntOrString { + fn default() -> Self { + IntOrString::Int(0) + } +} + +#[derive(Default)] +pub enum SimpleEnum { + Foo, + #[default] + Bar, +} + + +pub enum NonExhaustiveEnum { + Foo, + #[non_exhaustive] + Bar, +} + +impl Default for NonExhaustiveEnum { + fn default() -> Self { + NonExhaustiveEnum::Bar + } +} + +// https://github.com/rust-lang/rust-clippy/issues/10396 + +#[derive(Default)] +struct DefaultType; + +struct GenericType { + t: T, +} + +impl Default for GenericType { + fn default() -> Self { + Self { t: Default::default() } + } +} + +struct InnerGenericType { + t: T, +} + +impl Default for InnerGenericType { + fn default() -> Self { + Self { t: Default::default() } + } +} + +struct OtherGenericType { + inner: InnerGenericType, +} + +impl Default for OtherGenericType { + fn default() -> Self { + Self { + inner: Default::default(), + } + } +} + +mod issue10158 { + pub trait T {} + + #[derive(Default)] + pub struct S {} + impl T for S {} + + pub struct Outer { + pub inner: Box, + } + + impl Default for Outer { + fn default() -> Self { + Outer { + // Box::::default() adjusts to Box + inner: Box::::default(), + } + } + } +} + +mod issue11368 { + pub struct A { + a: u32, + } + + impl Default for A { + #[track_caller] + fn default() -> Self { + Self { a: 0 } + } + } +} + +fn main() {} diff --git a/tests/ui/derivable_impls.rs b/tests/ui/derivable_impls.rs index 58f7771b627..21d73ba8b77 100644 --- a/tests/ui/derivable_impls.rs +++ b/tests/ui/derivable_impls.rs @@ -1,7 +1,5 @@ #![allow(dead_code)] -//@no-rustfix: need to change the suggestion to a multipart suggestion - use std::collections::HashMap; struct FooDefault<'a> { diff --git a/tests/ui/derivable_impls.stderr b/tests/ui/derivable_impls.stderr index d3adfa60e10..c22569145bd 100644 --- a/tests/ui/derivable_impls.stderr +++ b/tests/ui/derivable_impls.stderr @@ -1,5 +1,5 @@ error: this `impl` can be derived - --> tests/ui/derivable_impls.rs:22:1 + --> tests/ui/derivable_impls.rs:20:1 | LL | / impl std::default::Default for FooDefault<'_> { LL | | fn default() -> Self { @@ -12,15 +12,14 @@ LL | | } | = note: `-D clippy::derivable-impls` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::derivable_impls)]` - = help: remove the manual implementation... -help: ...and instead derive it +help: replace the manual implementation with a derive attribute | LL + #[derive(Default)] -LL | struct FooDefault<'a> { +LL ~ struct FooDefault<'a> { | error: this `impl` can be derived - --> tests/ui/derivable_impls.rs:43:1 + --> tests/ui/derivable_impls.rs:41:1 | LL | / impl std::default::Default for TupleDefault { LL | | fn default() -> Self { @@ -29,15 +28,14 @@ LL | | } LL | | } | |_^ | - = help: remove the manual implementation... -help: ...and instead derive it +help: replace the manual implementation with a derive attribute | LL + #[derive(Default)] -LL | struct TupleDefault(bool, i32, u64); +LL ~ struct TupleDefault(bool, i32, u64); | error: this `impl` can be derived - --> tests/ui/derivable_impls.rs:95:1 + --> tests/ui/derivable_impls.rs:93:1 | LL | / impl Default for StrDefault<'_> { LL | | fn default() -> Self { @@ -46,15 +44,14 @@ LL | | } LL | | } | |_^ | - = help: remove the manual implementation... -help: ...and instead derive it +help: replace the manual implementation with a derive attribute | LL + #[derive(Default)] -LL | struct StrDefault<'a>(&'a str); +LL ~ struct StrDefault<'a>(&'a str); | error: this `impl` can be derived - --> tests/ui/derivable_impls.rs:121:1 + --> tests/ui/derivable_impls.rs:119:1 | LL | / impl Default for Y { LL | | fn default() -> Self { @@ -63,15 +60,14 @@ LL | | } LL | | } | |_^ | - = help: remove the manual implementation... -help: ...and instead derive it +help: replace the manual implementation with a derive attribute | LL + #[derive(Default)] -LL | struct Y(u32); +LL ~ struct Y(u32); | error: this `impl` can be derived - --> tests/ui/derivable_impls.rs:160:1 + --> tests/ui/derivable_impls.rs:158:1 | LL | / impl Default for WithoutSelfCurly { LL | | fn default() -> Self { @@ -80,15 +76,14 @@ LL | | } LL | | } | |_^ | - = help: remove the manual implementation... -help: ...and instead derive it +help: replace the manual implementation with a derive attribute | LL + #[derive(Default)] -LL | struct WithoutSelfCurly { +LL ~ struct WithoutSelfCurly { | error: this `impl` can be derived - --> tests/ui/derivable_impls.rs:168:1 + --> tests/ui/derivable_impls.rs:166:1 | LL | / impl Default for WithoutSelfParan { LL | | fn default() -> Self { @@ -97,15 +92,14 @@ LL | | } LL | | } | |_^ | - = help: remove the manual implementation... -help: ...and instead derive it +help: replace the manual implementation with a derive attribute | LL + #[derive(Default)] -LL | struct WithoutSelfParan(bool); +LL ~ struct WithoutSelfParan(bool); | error: this `impl` can be derived - --> tests/ui/derivable_impls.rs:218:1 + --> tests/ui/derivable_impls.rs:216:1 | LL | / impl Default for RepeatDefault1 { LL | | fn default() -> Self { @@ -114,15 +108,14 @@ LL | | } LL | | } | |_^ | - = help: remove the manual implementation... -help: ...and instead derive it +help: replace the manual implementation with a derive attribute | LL + #[derive(Default)] -LL | pub struct RepeatDefault1 { +LL ~ pub struct RepeatDefault1 { | error: this `impl` can be derived - --> tests/ui/derivable_impls.rs:252:1 + --> tests/ui/derivable_impls.rs:250:1 | LL | / impl Default for SimpleEnum { LL | | fn default() -> Self { @@ -131,14 +124,11 @@ LL | | } LL | | } | |_^ | - = help: remove the manual implementation... -help: ...and instead derive it... +help: replace the manual implementation with a derive attribute and mark the default variant | LL + #[derive(Default)] -LL | pub enum SimpleEnum { - | -help: ...and mark the default variant - | +LL ~ pub enum SimpleEnum { +LL | Foo, LL ~ #[default] LL ~ Bar, | diff --git a/tests/ui/doc/doc_include_without_cfg.fixed b/tests/ui/doc/doc_include_without_cfg.fixed new file mode 100644 index 00000000000..d4ae810d738 --- /dev/null +++ b/tests/ui/doc/doc_include_without_cfg.fixed @@ -0,0 +1,40 @@ +#![warn(clippy::doc_include_without_cfg)] +// Should not lint. +#![doc(html_playground_url = "https://playground.example.com/")] +#![cfg_attr(doc, doc = include_str!("../approx_const.rs"))] //~ doc_include_without_cfg +// Should not lint. +#![cfg_attr(feature = "whatever", doc = include_str!("../approx_const.rs"))] +#![cfg_attr(doc, doc = include_str!("../approx_const.rs"))] +#![doc = "some doc"] +//! more doc + +macro_rules! man_link { + ($a:literal, $b:literal) => { + concat!($a, $b) + }; +} + +// Should not lint! +macro_rules! tst { + ($(#[$attr:meta])*) => { + $(#[$attr])* + fn blue() { + println!("Hello, world!"); + } + } +} + +tst! { + /// This is a test with no included file +} + +#[cfg_attr(doc, doc = include_str!("../approx_const.rs"))] //~ doc_include_without_cfg +// Should not lint. +#[doc = man_link!("bla", "blob")] +#[cfg_attr(feature = "whatever", doc = include_str!("../approx_const.rs"))] +#[cfg_attr(doc, doc = include_str!("../approx_const.rs"))] +#[doc = "some doc"] +/// more doc +fn main() { + // test code goes here +} diff --git a/tests/ui/doc/doc_include_without_cfg.rs b/tests/ui/doc/doc_include_without_cfg.rs new file mode 100644 index 00000000000..c82f6bf2035 --- /dev/null +++ b/tests/ui/doc/doc_include_without_cfg.rs @@ -0,0 +1,40 @@ +#![warn(clippy::doc_include_without_cfg)] +// Should not lint. +#![doc(html_playground_url = "https://playground.example.com/")] +#![doc = include_str!("../approx_const.rs")] //~ doc_include_without_cfg +// Should not lint. +#![cfg_attr(feature = "whatever", doc = include_str!("../approx_const.rs"))] +#![cfg_attr(doc, doc = include_str!("../approx_const.rs"))] +#![doc = "some doc"] +//! more doc + +macro_rules! man_link { + ($a:literal, $b:literal) => { + concat!($a, $b) + }; +} + +// Should not lint! +macro_rules! tst { + ($(#[$attr:meta])*) => { + $(#[$attr])* + fn blue() { + println!("Hello, world!"); + } + } +} + +tst! { + /// This is a test with no included file +} + +#[doc = include_str!("../approx_const.rs")] //~ doc_include_without_cfg +// Should not lint. +#[doc = man_link!("bla", "blob")] +#[cfg_attr(feature = "whatever", doc = include_str!("../approx_const.rs"))] +#[cfg_attr(doc, doc = include_str!("../approx_const.rs"))] +#[doc = "some doc"] +/// more doc +fn main() { + // test code goes here +} diff --git a/tests/ui/doc/doc_include_without_cfg.stderr b/tests/ui/doc/doc_include_without_cfg.stderr new file mode 100644 index 00000000000..17ea53c7c31 --- /dev/null +++ b/tests/ui/doc/doc_include_without_cfg.stderr @@ -0,0 +1,17 @@ +error: included a file in documentation unconditionally + --> tests/ui/doc/doc_include_without_cfg.rs:4:1 + | +LL | #![doc = include_str!("../approx_const.rs")] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `cfg_attr(doc, doc = "...")`: `#![cfg_attr(doc, doc = include_str!("../approx_const.rs"))]` + | + = note: `-D clippy::doc-include-without-cfg` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::doc_include_without_cfg)]` + +error: included a file in documentation unconditionally + --> tests/ui/doc/doc_include_without_cfg.rs:31:1 + | +LL | #[doc = include_str!("../approx_const.rs")] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `cfg_attr(doc, doc = "...")`: `#[cfg_attr(doc, doc = include_str!("../approx_const.rs"))]` + +error: aborting due to 2 previous errors + diff --git a/tests/ui/extra_unused_lifetimes.rs b/tests/ui/extra_unused_lifetimes.rs index 17d2ed9f50c..aa964af3fc2 100644 --- a/tests/ui/extra_unused_lifetimes.rs +++ b/tests/ui/extra_unused_lifetimes.rs @@ -134,4 +134,11 @@ struct Human<'a> { pub name: &'a str, } +// https://github.com/rust-lang/rust-clippy/issues/13578 +mod issue_13578 { + pub trait Foo {} + + impl<'a, T: 'a> Foo for Option where &'a T: Foo {} +} + fn main() {} diff --git a/tests/ui/format_args_unfixable.rs b/tests/ui/format_args_unfixable.rs index f04715f4f01..7590de3751a 100644 --- a/tests/ui/format_args_unfixable.rs +++ b/tests/ui/format_args_unfixable.rs @@ -119,3 +119,32 @@ fn test2() { format!("something failed at {}", Location::caller()) ); } + +#[clippy::format_args] +macro_rules! usr_println { + ($target:expr, $($args:tt)*) => {{ + if $target { + println!($($args)*) + } + }}; +} + +fn user_format() { + let error = Error::new(ErrorKind::Other, "bad thing"); + let x = 'x'; + + usr_println!(true, "error: {}", format!("boom at {}", Location::caller())); + //~^ ERROR: `format!` in `usr_println!` args + usr_println!(true, "{}: {}", error, format!("boom at {}", Location::caller())); + //~^ ERROR: `format!` in `usr_println!` args + usr_println!(true, "{:?}: {}", error, format!("boom at {}", Location::caller())); + //~^ ERROR: `format!` in `usr_println!` args + usr_println!(true, "{{}}: {}", format!("boom at {}", Location::caller())); + //~^ ERROR: `format!` in `usr_println!` args + usr_println!(true, r#"error: "{}""#, format!("boom at {}", Location::caller())); + //~^ ERROR: `format!` in `usr_println!` args + usr_println!(true, "error: {}", format!(r#"boom at "{}""#, Location::caller())); + //~^ ERROR: `format!` in `usr_println!` args + usr_println!(true, "error: {}", format!("boom at {} {0}", Location::caller())); + //~^ ERROR: `format!` in `usr_println!` args +} diff --git a/tests/ui/format_args_unfixable.stderr b/tests/ui/format_args_unfixable.stderr index 20cd0bb8c55..1b4b683fd6c 100644 --- a/tests/ui/format_args_unfixable.stderr +++ b/tests/ui/format_args_unfixable.stderr @@ -174,5 +174,68 @@ LL | panic!("error: {}", format!("something failed at {}", Location::caller( = help: combine the `format!(..)` arguments with the outer `panic!(..)` call = help: or consider changing `format!` to `format_args!` -error: aborting due to 18 previous errors +error: `format!` in `usr_println!` args + --> tests/ui/format_args_unfixable.rs:136:5 + | +LL | usr_println!(true, "error: {}", format!("boom at {}", Location::caller())); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: combine the `format!(..)` arguments with the outer `usr_println!(..)` call + = help: or consider changing `format!` to `format_args!` + +error: `format!` in `usr_println!` args + --> tests/ui/format_args_unfixable.rs:138:5 + | +LL | usr_println!(true, "{}: {}", error, format!("boom at {}", Location::caller())); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: combine the `format!(..)` arguments with the outer `usr_println!(..)` call + = help: or consider changing `format!` to `format_args!` + +error: `format!` in `usr_println!` args + --> tests/ui/format_args_unfixable.rs:140:5 + | +LL | usr_println!(true, "{:?}: {}", error, format!("boom at {}", Location::caller())); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: combine the `format!(..)` arguments with the outer `usr_println!(..)` call + = help: or consider changing `format!` to `format_args!` + +error: `format!` in `usr_println!` args + --> tests/ui/format_args_unfixable.rs:142:5 + | +LL | usr_println!(true, "{{}}: {}", format!("boom at {}", Location::caller())); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: combine the `format!(..)` arguments with the outer `usr_println!(..)` call + = help: or consider changing `format!` to `format_args!` + +error: `format!` in `usr_println!` args + --> tests/ui/format_args_unfixable.rs:144:5 + | +LL | usr_println!(true, r#"error: "{}""#, format!("boom at {}", Location::caller())); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: combine the `format!(..)` arguments with the outer `usr_println!(..)` call + = help: or consider changing `format!` to `format_args!` + +error: `format!` in `usr_println!` args + --> tests/ui/format_args_unfixable.rs:146:5 + | +LL | usr_println!(true, "error: {}", format!(r#"boom at "{}""#, Location::caller())); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: combine the `format!(..)` arguments with the outer `usr_println!(..)` call + = help: or consider changing `format!` to `format_args!` + +error: `format!` in `usr_println!` args + --> tests/ui/format_args_unfixable.rs:148:5 + | +LL | usr_println!(true, "error: {}", format!("boom at {} {0}", Location::caller())); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: combine the `format!(..)` arguments with the outer `usr_println!(..)` call + = help: or consider changing `format!` to `format_args!` + +error: aborting due to 25 previous errors diff --git a/tests/ui/future_not_send.rs b/tests/ui/future_not_send.rs index 9274340b5ca..626ee6de9e4 100644 --- a/tests/ui/future_not_send.rs +++ b/tests/ui/future_not_send.rs @@ -1,6 +1,7 @@ #![warn(clippy::future_not_send)] use std::cell::Cell; +use std::future::Future; use std::rc::Rc; use std::sync::Arc; @@ -63,6 +64,22 @@ where t } +async fn maybe_send_generic_future(t: T) -> T { + async { true }.await; + t +} + +async fn maybe_send_generic_future2 Fut, Fut: Future>(f: F) { + async { true }.await; + let res = f(); + async { true }.await; +} + +async fn generic_future_always_unsend(_: Rc) { + //~^ ERROR: future cannot be sent between threads safely + async { true }.await; +} + async fn generic_future_send(t: T) where T: Send, @@ -71,7 +88,6 @@ where } async fn unclear_future(t: T) {} -//~^ ERROR: future cannot be sent between threads safely fn main() { let rc = Rc::new([1, 2, 3]); diff --git a/tests/ui/future_not_send.stderr b/tests/ui/future_not_send.stderr index 67677d6367a..3807c747013 100644 --- a/tests/ui/future_not_send.stderr +++ b/tests/ui/future_not_send.stderr @@ -1,11 +1,11 @@ error: future cannot be sent between threads safely - --> tests/ui/future_not_send.rs:7:1 + --> tests/ui/future_not_send.rs:8:1 | LL | async fn private_future(rc: Rc<[u8]>, cell: &Cell) -> bool { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ future returned by `private_future` is not `Send` | note: future is not `Send` as this value is used across an await - --> tests/ui/future_not_send.rs:9:20 + --> tests/ui/future_not_send.rs:10:20 | LL | async fn private_future(rc: Rc<[u8]>, cell: &Cell) -> bool { | -- has type `std::rc::Rc<[u8]>` which is not `Send` @@ -14,7 +14,7 @@ LL | async { true }.await | ^^^^^ await occurs here, with `rc` maybe used later = note: `std::rc::Rc<[u8]>` doesn't implement `std::marker::Send` note: captured value is not `Send` because `&` references cannot be sent unless their referent is `Sync` - --> tests/ui/future_not_send.rs:7:39 + --> tests/ui/future_not_send.rs:8:39 | LL | async fn private_future(rc: Rc<[u8]>, cell: &Cell) -> bool { | ^^^^ has type `&std::cell::Cell` which is not `Send`, because `std::cell::Cell` is not `Sync` @@ -23,13 +23,13 @@ LL | async fn private_future(rc: Rc<[u8]>, cell: &Cell) -> bool { = help: to override `-D warnings` add `#[allow(clippy::future_not_send)]` error: future cannot be sent between threads safely - --> tests/ui/future_not_send.rs:12:1 + --> tests/ui/future_not_send.rs:13:1 | LL | pub async fn public_future(rc: Rc<[u8]>) { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ future returned by `public_future` is not `Send` | note: future is not `Send` as this value is used across an await - --> tests/ui/future_not_send.rs:14:20 + --> tests/ui/future_not_send.rs:15:20 | LL | pub async fn public_future(rc: Rc<[u8]>) { | -- has type `std::rc::Rc<[u8]>` which is not `Send` @@ -39,45 +39,45 @@ LL | async { true }.await; = note: `std::rc::Rc<[u8]>` doesn't implement `std::marker::Send` error: future cannot be sent between threads safely - --> tests/ui/future_not_send.rs:21:1 + --> tests/ui/future_not_send.rs:22:1 | LL | async fn private_future2(rc: Rc<[u8]>, cell: &Cell) -> bool { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ future returned by `private_future2` is not `Send` | note: captured value is not `Send` - --> tests/ui/future_not_send.rs:21:26 + --> tests/ui/future_not_send.rs:22:26 | LL | async fn private_future2(rc: Rc<[u8]>, cell: &Cell) -> bool { | ^^ has type `std::rc::Rc<[u8]>` which is not `Send` = note: `std::rc::Rc<[u8]>` doesn't implement `std::marker::Send` note: captured value is not `Send` because `&` references cannot be sent unless their referent is `Sync` - --> tests/ui/future_not_send.rs:21:40 + --> tests/ui/future_not_send.rs:22:40 | LL | async fn private_future2(rc: Rc<[u8]>, cell: &Cell) -> bool { | ^^^^ has type `&std::cell::Cell` which is not `Send`, because `std::cell::Cell` is not `Sync` = note: `std::cell::Cell` doesn't implement `std::marker::Sync` error: future cannot be sent between threads safely - --> tests/ui/future_not_send.rs:26:1 + --> tests/ui/future_not_send.rs:27:1 | LL | pub async fn public_future2(rc: Rc<[u8]>) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ future returned by `public_future2` is not `Send` | note: captured value is not `Send` - --> tests/ui/future_not_send.rs:26:29 + --> tests/ui/future_not_send.rs:27:29 | LL | pub async fn public_future2(rc: Rc<[u8]>) {} | ^^ has type `std::rc::Rc<[u8]>` which is not `Send` = note: `std::rc::Rc<[u8]>` doesn't implement `std::marker::Send` error: future cannot be sent between threads safely - --> tests/ui/future_not_send.rs:38:5 + --> tests/ui/future_not_send.rs:39:5 | LL | async fn private_future(&self) -> usize { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ future returned by `private_future` is not `Send` | note: future is not `Send` as this value is used across an await - --> tests/ui/future_not_send.rs:40:24 + --> tests/ui/future_not_send.rs:41:24 | LL | async fn private_future(&self) -> usize { | ----- has type `&Dummy` which is not `Send` @@ -87,20 +87,20 @@ LL | async { true }.await; = note: `std::rc::Rc<[u8]>` doesn't implement `std::marker::Sync` error: future cannot be sent between threads safely - --> tests/ui/future_not_send.rs:44:5 + --> tests/ui/future_not_send.rs:45:5 | LL | pub async fn public_future(&self) { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ future returned by `public_future` is not `Send` | note: captured value is not `Send` because `&` references cannot be sent unless their referent is `Sync` - --> tests/ui/future_not_send.rs:44:32 + --> tests/ui/future_not_send.rs:45:32 | LL | pub async fn public_future(&self) { | ^^^^^ has type `&Dummy` which is not `Send`, because `Dummy` is not `Sync` = note: `std::rc::Rc<[u8]>` doesn't implement `std::marker::Sync` error: future cannot be sent between threads safely - --> tests/ui/future_not_send.rs:55:1 + --> tests/ui/future_not_send.rs:56:1 | LL | / async fn generic_future(t: T) -> T LL | | @@ -109,7 +109,7 @@ LL | | T: Send, | |____________^ future returned by `generic_future` is not `Send` | note: future is not `Send` as this value is used across an await - --> tests/ui/future_not_send.rs:61:20 + --> tests/ui/future_not_send.rs:62:20 | LL | let rt = &t; | -- has type `&T` which is not `Send` @@ -118,17 +118,20 @@ LL | async { true }.await; = note: `T` doesn't implement `std::marker::Sync` error: future cannot be sent between threads safely - --> tests/ui/future_not_send.rs:73:1 + --> tests/ui/future_not_send.rs:78:1 | -LL | async fn unclear_future(t: T) {} - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ future returned by `unclear_future` is not `Send` +LL | async fn generic_future_always_unsend(_: Rc) { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ future returned by `generic_future_always_unsend` is not `Send` | -note: captured value is not `Send` - --> tests/ui/future_not_send.rs:73:28 +note: future is not `Send` as this value is used across an await + --> tests/ui/future_not_send.rs:80:20 | -LL | async fn unclear_future(t: T) {} - | ^ has type `T` which is not `Send` - = note: `T` doesn't implement `std::marker::Send` +LL | async fn generic_future_always_unsend(_: Rc) { + | - has type `std::rc::Rc` which is not `Send` +LL | +LL | async { true }.await; + | ^^^^^ await occurs here, with `_` maybe used later + = note: `std::rc::Rc` doesn't implement `std::marker::Send` error: aborting due to 8 previous errors diff --git a/tests/ui/if_let_mutex.edition2021.stderr b/tests/ui/if_let_mutex.edition2021.stderr new file mode 100644 index 00000000000..984d6adbb2a --- /dev/null +++ b/tests/ui/if_let_mutex.edition2021.stderr @@ -0,0 +1,73 @@ +error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock + --> tests/ui/if_let_mutex.rs:16:5 + | +LL | if let Err(locked) = m.lock() { + | ^ - this Mutex will remain locked for the entire `if let`-block... + | _____| + | | +LL | | +LL | | do_stuff(locked); +LL | | } else { +LL | | let lock = m.lock().unwrap(); + | | - ... and is tried to lock again here, which will always deadlock. +LL | | do_stuff(lock); +LL | | }; + | |_____^ + | + = help: move the lock call outside of the `if let ...` expression + = note: `-D clippy::if-let-mutex` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::if_let_mutex)]` + +error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock + --> tests/ui/if_let_mutex.rs:29:5 + | +LL | if let Some(locked) = m.lock().unwrap().deref() { + | ^ - this Mutex will remain locked for the entire `if let`-block... + | _____| + | | +LL | | +LL | | do_stuff(locked); +LL | | } else { +LL | | let lock = m.lock().unwrap(); + | | - ... and is tried to lock again here, which will always deadlock. +LL | | do_stuff(lock); +LL | | }; + | |_____^ + | + = help: move the lock call outside of the `if let ...` expression + +error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock + --> tests/ui/if_let_mutex.rs:51:5 + | +LL | if let Ok(i) = mutex.lock() { + | ^ ----- this Mutex will remain locked for the entire `if let`-block... + | _____| + | | +LL | | +LL | | do_stuff(i); +LL | | } else { +LL | | let _x = mutex.lock(); + | | ----- ... and is tried to lock again here, which will always deadlock. +LL | | }; + | |_____^ + | + = help: move the lock call outside of the `if let ...` expression + +error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock + --> tests/ui/if_let_mutex.rs:60:5 + | +LL | if let Ok(_) = m1.lock() { + | ^ -- this Mutex will remain locked for the entire `if let`-block... + | _____| + | | +LL | | m2.lock(); +LL | | } else { +LL | | m1.lock(); + | | -- ... and is tried to lock again here, which will always deadlock. +LL | | } + | |_____^ + | + = help: move the lock call outside of the `if let ...` expression + +error: aborting due to 4 previous errors + diff --git a/tests/ui/if_let_mutex.rs b/tests/ui/if_let_mutex.rs index bb0eadfca1c..80eee293989 100644 --- a/tests/ui/if_let_mutex.rs +++ b/tests/ui/if_let_mutex.rs @@ -1,3 +1,8 @@ +//@ compile-flags: -Zunstable-options + +//@revisions: edition2021 edition2024 +//@[edition2021] edition:2021 +//@[edition2024] edition:2024 #![warn(clippy::if_let_mutex)] #![allow(clippy::redundant_pattern_matching)] @@ -9,7 +14,7 @@ fn do_stuff(_: T) {} fn if_let() { let m = Mutex::new(1_u8); if let Err(locked) = m.lock() { - //~^ ERROR: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a d + //~[edition2021]^ if_let_mutex do_stuff(locked); } else { let lock = m.lock().unwrap(); @@ -22,7 +27,7 @@ fn if_let() { fn if_let_option() { let m = Mutex::new(Some(0_u8)); if let Some(locked) = m.lock().unwrap().deref() { - //~^ ERROR: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a d + //~[edition2021]^ if_let_mutex do_stuff(locked); } else { let lock = m.lock().unwrap(); @@ -44,7 +49,7 @@ fn if_let_different_mutex() { fn mutex_ref(mutex: &Mutex) { if let Ok(i) = mutex.lock() { - //~^ ERROR: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a d + //~[edition2021]^ if_let_mutex do_stuff(i); } else { let _x = mutex.lock(); diff --git a/tests/ui/if_let_mutex.stderr b/tests/ui/if_let_mutex.stderr deleted file mode 100644 index 45df4ac4d67..00000000000 --- a/tests/ui/if_let_mutex.stderr +++ /dev/null @@ -1,73 +0,0 @@ -error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock - --> tests/ui/if_let_mutex.rs:11:5 - | -LL | if let Err(locked) = m.lock() { - | ^ - this Mutex will remain locked for the entire `if let`-block... - | _____| - | | -LL | | -LL | | do_stuff(locked); -LL | | } else { -LL | | let lock = m.lock().unwrap(); - | | - ... and is tried to lock again here, which will always deadlock. -LL | | do_stuff(lock); -LL | | }; - | |_____^ - | - = help: move the lock call outside of the `if let ...` expression - = note: `-D clippy::if-let-mutex` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::if_let_mutex)]` - -error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock - --> tests/ui/if_let_mutex.rs:24:5 - | -LL | if let Some(locked) = m.lock().unwrap().deref() { - | ^ - this Mutex will remain locked for the entire `if let`-block... - | _____| - | | -LL | | -LL | | do_stuff(locked); -LL | | } else { -LL | | let lock = m.lock().unwrap(); - | | - ... and is tried to lock again here, which will always deadlock. -LL | | do_stuff(lock); -LL | | }; - | |_____^ - | - = help: move the lock call outside of the `if let ...` expression - -error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock - --> tests/ui/if_let_mutex.rs:46:5 - | -LL | if let Ok(i) = mutex.lock() { - | ^ ----- this Mutex will remain locked for the entire `if let`-block... - | _____| - | | -LL | | -LL | | do_stuff(i); -LL | | } else { -LL | | let _x = mutex.lock(); - | | ----- ... and is tried to lock again here, which will always deadlock. -LL | | }; - | |_____^ - | - = help: move the lock call outside of the `if let ...` expression - -error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock - --> tests/ui/if_let_mutex.rs:55:5 - | -LL | if let Ok(_) = m1.lock() { - | ^ -- this Mutex will remain locked for the entire `if let`-block... - | _____| - | | -LL | | m2.lock(); -LL | | } else { -LL | | m1.lock(); - | | -- ... and is tried to lock again here, which will always deadlock. -LL | | } - | |_____^ - | - = help: move the lock call outside of the `if let ...` expression - -error: aborting due to 4 previous errors - diff --git a/tests/ui/missing_const_for_fn/could_be_const.fixed b/tests/ui/missing_const_for_fn/could_be_const.fixed index 754fe061c4a..014fbb85c7a 100644 --- a/tests/ui/missing_const_for_fn/could_be_const.fixed +++ b/tests/ui/missing_const_for_fn/could_be_const.fixed @@ -1,6 +1,6 @@ #![warn(clippy::missing_const_for_fn)] #![allow(incomplete_features, clippy::let_and_return, clippy::missing_transmute_annotations)] -#![feature(const_trait_impl, abi_vectorcall)] +#![feature(const_trait_impl)] use std::mem::transmute; @@ -211,8 +211,4 @@ mod extern_fn { //~^ ERROR: this could be a `const fn` const extern "system-unwind" fn system_unwind() {} //~^ ERROR: this could be a `const fn` - pub const extern "vectorcall" fn std_call() {} - //~^ ERROR: this could be a `const fn` - pub const extern "vectorcall-unwind" fn std_call_unwind() {} - //~^ ERROR: this could be a `const fn` } diff --git a/tests/ui/missing_const_for_fn/could_be_const.rs b/tests/ui/missing_const_for_fn/could_be_const.rs index 460be0733e0..4f7c2cbcf0b 100644 --- a/tests/ui/missing_const_for_fn/could_be_const.rs +++ b/tests/ui/missing_const_for_fn/could_be_const.rs @@ -1,6 +1,6 @@ #![warn(clippy::missing_const_for_fn)] #![allow(incomplete_features, clippy::let_and_return, clippy::missing_transmute_annotations)] -#![feature(const_trait_impl, abi_vectorcall)] +#![feature(const_trait_impl)] use std::mem::transmute; @@ -211,8 +211,4 @@ mod extern_fn { //~^ ERROR: this could be a `const fn` extern "system-unwind" fn system_unwind() {} //~^ ERROR: this could be a `const fn` - pub extern "vectorcall" fn std_call() {} - //~^ ERROR: this could be a `const fn` - pub extern "vectorcall-unwind" fn std_call_unwind() {} - //~^ ERROR: this could be a `const fn` } diff --git a/tests/ui/missing_const_for_fn/could_be_const.stderr b/tests/ui/missing_const_for_fn/could_be_const.stderr index d553c522556..cc7dfd0888d 100644 --- a/tests/ui/missing_const_for_fn/could_be_const.stderr +++ b/tests/ui/missing_const_for_fn/could_be_const.stderr @@ -316,27 +316,5 @@ help: make the function `const` LL | const extern "system-unwind" fn system_unwind() {} | +++++ -error: this could be a `const fn` - --> tests/ui/missing_const_for_fn/could_be_const.rs:214:5 - | -LL | pub extern "vectorcall" fn std_call() {} - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | -help: make the function `const` - | -LL | pub const extern "vectorcall" fn std_call() {} - | +++++ - -error: this could be a `const fn` - --> tests/ui/missing_const_for_fn/could_be_const.rs:216:5 - | -LL | pub extern "vectorcall-unwind" fn std_call_unwind() {} - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | -help: make the function `const` - | -LL | pub const extern "vectorcall-unwind" fn std_call_unwind() {} - | +++++ - -error: aborting due to 26 previous errors +error: aborting due to 24 previous errors diff --git a/tests/ui/missing_doc_crate.rs b/tests/ui/missing_doc_crate.rs index e00c7fbfed1..fdb23af279d 100644 --- a/tests/ui/missing_doc_crate.rs +++ b/tests/ui/missing_doc_crate.rs @@ -1,4 +1,5 @@ #![warn(clippy::missing_docs_in_private_items)] +#![allow(clippy::doc_include_without_cfg)] #![doc = include_str!("../../README.md")] fn main() {} diff --git a/tests/ui/redundant_guards.fixed b/tests/ui/redundant_guards.fixed index ed4b1c21915..ff7b233f004 100644 --- a/tests/ui/redundant_guards.fixed +++ b/tests/ui/redundant_guards.fixed @@ -1,6 +1,6 @@ //@aux-build:proc_macros.rs #![feature(if_let_guard)] -#![allow(clippy::no_effect, unused, clippy::single_match)] +#![allow(clippy::no_effect, unused, clippy::single_match, invalid_nan_comparisons)] #![warn(clippy::redundant_guards)] #[macro_use] @@ -19,15 +19,24 @@ struct FloatWrapper(f32); fn issue11304() { match 0.1 { - x if x == 0.0 => todo!(), + 0.0 => todo!(), + // Pattern matching NAN is illegal + x if x == f64::NAN => todo!(), _ => todo!(), } match FloatWrapper(0.1) { - x if x == FloatWrapper(0.0) => todo!(), + FloatWrapper(0.0) => todo!(), _ => todo!(), } } +fn issue13681() { + match c"hi" { + x if x == c"hi" => (), + _ => (), + } +} + fn main() { let c = C(1, 2); match c { diff --git a/tests/ui/redundant_guards.rs b/tests/ui/redundant_guards.rs index adbc4ed16cd..b4d4ef5b170 100644 --- a/tests/ui/redundant_guards.rs +++ b/tests/ui/redundant_guards.rs @@ -1,6 +1,6 @@ //@aux-build:proc_macros.rs #![feature(if_let_guard)] -#![allow(clippy::no_effect, unused, clippy::single_match)] +#![allow(clippy::no_effect, unused, clippy::single_match, invalid_nan_comparisons)] #![warn(clippy::redundant_guards)] #[macro_use] @@ -20,6 +20,8 @@ struct FloatWrapper(f32); fn issue11304() { match 0.1 { x if x == 0.0 => todo!(), + // Pattern matching NAN is illegal + x if x == f64::NAN => todo!(), _ => todo!(), } match FloatWrapper(0.1) { @@ -28,6 +30,13 @@ fn issue11304() { } } +fn issue13681() { + match c"hi" { + x if x == c"hi" => (), + _ => (), + } +} + fn main() { let c = C(1, 2); match c { diff --git a/tests/ui/redundant_guards.stderr b/tests/ui/redundant_guards.stderr index fd12e083282..7512546450b 100644 --- a/tests/ui/redundant_guards.stderr +++ b/tests/ui/redundant_guards.stderr @@ -1,19 +1,43 @@ error: redundant guard - --> tests/ui/redundant_guards.rs:34:20 + --> tests/ui/redundant_guards.rs:22:14 | -LL | C(x, y) if let 1 = y => .., - | ^^^^^^^^^ +LL | x if x == 0.0 => todo!(), + | ^^^^^^^^ | = note: `-D clippy::redundant-guards` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::redundant_guards)]` help: try | +LL - x if x == 0.0 => todo!(), +LL + 0.0 => todo!(), + | + +error: redundant guard + --> tests/ui/redundant_guards.rs:28:14 + | +LL | x if x == FloatWrapper(0.0) => todo!(), + | ^^^^^^^^^^^^^^^^^^^^^^ + | +help: try + | +LL - x if x == FloatWrapper(0.0) => todo!(), +LL + FloatWrapper(0.0) => todo!(), + | + +error: redundant guard + --> tests/ui/redundant_guards.rs:43:20 + | +LL | C(x, y) if let 1 = y => .., + | ^^^^^^^^^ + | +help: try + | LL - C(x, y) if let 1 = y => .., LL + C(x, 1) => .., | error: redundant guard - --> tests/ui/redundant_guards.rs:40:20 + --> tests/ui/redundant_guards.rs:49:20 | LL | Some(x) if matches!(x, Some(1) if true) => .., | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -24,7 +48,7 @@ LL | Some(Some(1)) if true => .., | ~~~~~~~ ~~~~~~~ error: redundant guard - --> tests/ui/redundant_guards.rs:41:20 + --> tests/ui/redundant_guards.rs:50:20 | LL | Some(x) if matches!(x, Some(1)) => { | ^^^^^^^^^^^^^^^^^^^^ @@ -36,7 +60,7 @@ LL + Some(Some(1)) => { | error: redundant guard - --> tests/ui/redundant_guards.rs:45:20 + --> tests/ui/redundant_guards.rs:54:20 | LL | Some(x) if let Some(1) = x => .., | ^^^^^^^^^^^^^^^ @@ -48,7 +72,7 @@ LL + Some(Some(1)) => .., | error: redundant guard - --> tests/ui/redundant_guards.rs:46:20 + --> tests/ui/redundant_guards.rs:55:20 | LL | Some(x) if x == Some(2) => .., | ^^^^^^^^^^^^ @@ -60,7 +84,7 @@ LL + Some(Some(2)) => .., | error: redundant guard - --> tests/ui/redundant_guards.rs:47:20 + --> tests/ui/redundant_guards.rs:56:20 | LL | Some(x) if Some(2) == x => .., | ^^^^^^^^^^^^ @@ -72,7 +96,7 @@ LL + Some(Some(2)) => .., | error: redundant guard - --> tests/ui/redundant_guards.rs:72:20 + --> tests/ui/redundant_guards.rs:81:20 | LL | B { e } if matches!(e, Some(A(2))) => .., | ^^^^^^^^^^^^^^^^^^^^^^^ @@ -84,7 +108,7 @@ LL + B { e: Some(A(2)) } => .., | error: redundant guard - --> tests/ui/redundant_guards.rs:109:20 + --> tests/ui/redundant_guards.rs:118:20 | LL | E::A(y) if y == "not from an or pattern" => {}, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -96,7 +120,7 @@ LL + E::A("not from an or pattern") => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:116:14 + --> tests/ui/redundant_guards.rs:125:14 | LL | x if matches!(x, Some(0)) => .., | ^^^^^^^^^^^^^^^^^^^^ @@ -108,7 +132,7 @@ LL + Some(0) => .., | error: redundant guard - --> tests/ui/redundant_guards.rs:123:14 + --> tests/ui/redundant_guards.rs:132:14 | LL | i if i == -1 => {}, | ^^^^^^^ @@ -120,7 +144,7 @@ LL + -1 => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:124:14 + --> tests/ui/redundant_guards.rs:133:14 | LL | i if i == 1 => {}, | ^^^^^^ @@ -132,7 +156,7 @@ LL + 1 => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:186:28 + --> tests/ui/redundant_guards.rs:195:28 | LL | Some(ref x) if x == &1 => {}, | ^^^^^^^ @@ -144,7 +168,7 @@ LL + Some(1) => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:187:28 + --> tests/ui/redundant_guards.rs:196:28 | LL | Some(ref x) if &1 == x => {}, | ^^^^^^^ @@ -156,7 +180,7 @@ LL + Some(1) => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:188:28 + --> tests/ui/redundant_guards.rs:197:28 | LL | Some(ref x) if let &2 = x => {}, | ^^^^^^^^^^ @@ -168,7 +192,7 @@ LL + Some(2) => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:189:28 + --> tests/ui/redundant_guards.rs:198:28 | LL | Some(ref x) if matches!(x, &3) => {}, | ^^^^^^^^^^^^^^^ @@ -180,7 +204,7 @@ LL + Some(3) => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:209:32 + --> tests/ui/redundant_guards.rs:218:32 | LL | B { ref c, .. } if c == &1 => {}, | ^^^^^^^ @@ -192,7 +216,7 @@ LL + B { c: 1, .. } => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:210:32 + --> tests/ui/redundant_guards.rs:219:32 | LL | B { ref c, .. } if &1 == c => {}, | ^^^^^^^ @@ -204,7 +228,7 @@ LL + B { c: 1, .. } => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:211:32 + --> tests/ui/redundant_guards.rs:220:32 | LL | B { ref c, .. } if let &1 = c => {}, | ^^^^^^^^^^ @@ -216,7 +240,7 @@ LL + B { c: 1, .. } => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:212:32 + --> tests/ui/redundant_guards.rs:221:32 | LL | B { ref c, .. } if matches!(c, &1) => {}, | ^^^^^^^^^^^^^^^ @@ -228,7 +252,7 @@ LL + B { c: 1, .. } => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:222:26 + --> tests/ui/redundant_guards.rs:231:26 | LL | Some(Some(x)) if x.is_empty() => {}, | ^^^^^^^^^^^^ @@ -240,7 +264,7 @@ LL + Some(Some("")) => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:233:26 + --> tests/ui/redundant_guards.rs:242:26 | LL | Some(Some(x)) if x.is_empty() => {}, | ^^^^^^^^^^^^ @@ -252,7 +276,7 @@ LL + Some(Some([])) => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:238:26 + --> tests/ui/redundant_guards.rs:247:26 | LL | Some(Some(x)) if x.is_empty() => {}, | ^^^^^^^^^^^^ @@ -264,7 +288,7 @@ LL + Some(Some([])) => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:249:26 + --> tests/ui/redundant_guards.rs:258:26 | LL | Some(Some(x)) if x.starts_with(&[]) => {}, | ^^^^^^^^^^^^^^^^^^ @@ -276,7 +300,7 @@ LL + Some(Some([..])) => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:254:26 + --> tests/ui/redundant_guards.rs:263:26 | LL | Some(Some(x)) if x.starts_with(&[1]) => {}, | ^^^^^^^^^^^^^^^^^^^ @@ -288,7 +312,7 @@ LL + Some(Some([1, ..])) => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:259:26 + --> tests/ui/redundant_guards.rs:268:26 | LL | Some(Some(x)) if x.starts_with(&[1, 2]) => {}, | ^^^^^^^^^^^^^^^^^^^^^^ @@ -300,7 +324,7 @@ LL + Some(Some([1, 2, ..])) => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:264:26 + --> tests/ui/redundant_guards.rs:273:26 | LL | Some(Some(x)) if x.ends_with(&[1, 2]) => {}, | ^^^^^^^^^^^^^^^^^^^^ @@ -312,7 +336,7 @@ LL + Some(Some([.., 1, 2])) => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:286:18 + --> tests/ui/redundant_guards.rs:295:18 | LL | y if y.is_empty() => {}, | ^^^^^^^^^^^^ @@ -324,7 +348,7 @@ LL + "" => {}, | error: redundant guard - --> tests/ui/redundant_guards.rs:305:22 + --> tests/ui/redundant_guards.rs:314:22 | LL | y if y.is_empty() => {}, | ^^^^^^^^^^^^ @@ -335,5 +359,5 @@ LL - y if y.is_empty() => {}, LL + "" => {}, | -error: aborting due to 28 previous errors +error: aborting due to 30 previous errors diff --git a/tests/ui/trait_duplication_in_bounds.fixed b/tests/ui/trait_duplication_in_bounds.fixed index 779431303ae..708512793d5 100644 --- a/tests/ui/trait_duplication_in_bounds.fixed +++ b/tests/ui/trait_duplication_in_bounds.fixed @@ -1,6 +1,6 @@ #![deny(clippy::trait_duplication_in_bounds)] #![allow(unused)] -#![feature(const_trait_impl)] +#![feature(associated_const_equality, const_trait_impl)] use std::any::Any; @@ -179,3 +179,19 @@ fn main() { let _x: fn(_) = f::<()>; let _x: fn(_) = f::; } + +// #13706 +fn assoc_tys_bounds() +where + T: Iterator + Iterator, +{ +} +trait AssocConstTrait { + const ASSOC: usize; +} +fn assoc_const_args() +where + T: AssocConstTrait, + //~^ trait_duplication_in_bounds +{ +} diff --git a/tests/ui/trait_duplication_in_bounds.rs b/tests/ui/trait_duplication_in_bounds.rs index 3e974dc0a8f..12db6b65a7a 100644 --- a/tests/ui/trait_duplication_in_bounds.rs +++ b/tests/ui/trait_duplication_in_bounds.rs @@ -1,6 +1,6 @@ #![deny(clippy::trait_duplication_in_bounds)] #![allow(unused)] -#![feature(const_trait_impl)] +#![feature(associated_const_equality, const_trait_impl)] use std::any::Any; @@ -179,3 +179,19 @@ fn main() { let _x: fn(_) = f::<()>; let _x: fn(_) = f::; } + +// #13706 +fn assoc_tys_bounds() +where + T: Iterator + Iterator, +{ +} +trait AssocConstTrait { + const ASSOC: usize; +} +fn assoc_const_args() +where + T: AssocConstTrait + AssocConstTrait, + //~^ trait_duplication_in_bounds +{ +} diff --git a/tests/ui/trait_duplication_in_bounds.stderr b/tests/ui/trait_duplication_in_bounds.stderr index 0dd508e4745..83c06eaccd4 100644 --- a/tests/ui/trait_duplication_in_bounds.stderr +++ b/tests/ui/trait_duplication_in_bounds.stderr @@ -70,5 +70,11 @@ error: these where clauses contain repeated elements LL | T: IntoIterator + IntoIterator, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `IntoIterator` -error: aborting due to 11 previous errors +error: these where clauses contain repeated elements + --> tests/ui/trait_duplication_in_bounds.rs:194:8 + | +LL | T: AssocConstTrait + AssocConstTrait, + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `AssocConstTrait` + +error: aborting due to 12 previous errors diff --git a/tests/ui/uninlined_format_args.fixed b/tests/ui/uninlined_format_args.fixed index 3f5b0e52ece..111a2e1987c 100644 --- a/tests/ui/uninlined_format_args.fixed +++ b/tests/ui/uninlined_format_args.fixed @@ -257,8 +257,6 @@ fn tester2() { my_concat!("{}", local_i32); my_good_macro!("{}", local_i32); my_good_macro!("{}", local_i32,); - - // FIXME: Broken false positives, currently unhandled my_bad_macro!("{}", local_i32); my_bad_macro2!("{}", local_i32); used_twice! { @@ -267,3 +265,22 @@ fn tester2() { local_i32, }; } + +#[clippy::format_args] +macro_rules! usr_println { + ($target:expr, $($args:tt)*) => {{ + if $target { + println!($($args)*) + } + }}; +} + +fn user_format() { + let local_i32 = 1; + let local_f64 = 2.0; + + usr_println!(true, "val='{local_i32}'"); + usr_println!(true, "{local_i32}"); + usr_println!(true, "{local_i32:#010x}"); + usr_println!(true, "{local_f64:.1}"); +} diff --git a/tests/ui/uninlined_format_args.rs b/tests/ui/uninlined_format_args.rs index b311aa4912c..81fe2476567 100644 --- a/tests/ui/uninlined_format_args.rs +++ b/tests/ui/uninlined_format_args.rs @@ -262,8 +262,6 @@ fn tester2() { my_concat!("{}", local_i32); my_good_macro!("{}", local_i32); my_good_macro!("{}", local_i32,); - - // FIXME: Broken false positives, currently unhandled my_bad_macro!("{}", local_i32); my_bad_macro2!("{}", local_i32); used_twice! { @@ -272,3 +270,22 @@ fn tester2() { local_i32, }; } + +#[clippy::format_args] +macro_rules! usr_println { + ($target:expr, $($args:tt)*) => {{ + if $target { + println!($($args)*) + } + }}; +} + +fn user_format() { + let local_i32 = 1; + let local_f64 = 2.0; + + usr_println!(true, "val='{}'", local_i32); + usr_println!(true, "{}", local_i32); + usr_println!(true, "{:#010x}", local_i32); + usr_println!(true, "{:.1}", local_f64); +} diff --git a/tests/ui/uninlined_format_args.stderr b/tests/ui/uninlined_format_args.stderr index 5a7ff3bc4f5..77961fea2c5 100644 --- a/tests/ui/uninlined_format_args.stderr +++ b/tests/ui/uninlined_format_args.stderr @@ -845,5 +845,53 @@ LL - println!("expand='{}'", local_i32); LL + println!("expand='{local_i32}'"); | -error: aborting due to 71 previous errors +error: variables can be used directly in the `format!` string + --> tests/ui/uninlined_format_args.rs:287:5 + | +LL | usr_println!(true, "val='{}'", local_i32); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: change this to + | +LL - usr_println!(true, "val='{}'", local_i32); +LL + usr_println!(true, "val='{local_i32}'"); + | + +error: variables can be used directly in the `format!` string + --> tests/ui/uninlined_format_args.rs:288:5 + | +LL | usr_println!(true, "{}", local_i32); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: change this to + | +LL - usr_println!(true, "{}", local_i32); +LL + usr_println!(true, "{local_i32}"); + | + +error: variables can be used directly in the `format!` string + --> tests/ui/uninlined_format_args.rs:289:5 + | +LL | usr_println!(true, "{:#010x}", local_i32); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: change this to + | +LL - usr_println!(true, "{:#010x}", local_i32); +LL + usr_println!(true, "{local_i32:#010x}"); + | + +error: variables can be used directly in the `format!` string + --> tests/ui/uninlined_format_args.rs:290:5 + | +LL | usr_println!(true, "{:.1}", local_f64); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: change this to + | +LL - usr_println!(true, "{:.1}", local_f64); +LL + usr_println!(true, "{local_f64:.1}"); + | + +error: aborting due to 75 previous errors diff --git a/tests/ui/unnecessary_map_or.fixed b/tests/ui/unnecessary_map_or.fixed index 2d932a70e9d..70b78ceca50 100644 --- a/tests/ui/unnecessary_map_or.fixed +++ b/tests/ui/unnecessary_map_or.fixed @@ -23,10 +23,9 @@ fn main() { let _ = Ok::, i32>(vec![5]).is_ok_and(|n| n == [5]); let _ = (Ok::(5) == Ok(5)); let _ = (Some(5) == Some(5)).then(|| 1); + let _ = Some(5).is_none_or(|n| n == 5); + let _ = Some(5).is_none_or(|n| 5 == n); - // shouldnt trigger - let _ = Some(5).map_or(true, |n| n == 5); - let _ = Some(5).map_or(true, |n| 5 == n); macro_rules! x { () => { Some(1) @@ -51,10 +50,21 @@ fn main() { let r: Result = Ok(3); let _ = r.is_ok_and(|x| x == 7); + // lint constructs that are not comparaisons as well + let func = |_x| true; + let r: Result = Ok(3); + let _ = r.is_ok_and(func); + let _ = Some(5).is_some_and(func); + let _ = Some(5).is_none_or(func); + #[derive(PartialEq)] struct S2; let r: Result = Ok(4); let _ = (r == Ok(8)); + + // do not lint `Result::map_or(true, …)` + let r: Result = Ok(4); + let _ = r.map_or(true, |x| x == 8); } #[clippy::msrv = "1.69.0"] @@ -62,3 +72,9 @@ fn msrv_1_69() { // is_some_and added in 1.70.0 let _ = Some(5).map_or(false, |n| n == if 2 > 1 { n } else { 0 }); } + +#[clippy::msrv = "1.81.0"] +fn msrv_1_81() { + // is_none_or added in 1.82.0 + let _ = Some(5).map_or(true, |n| n == if 2 > 1 { n } else { 0 }); +} diff --git a/tests/ui/unnecessary_map_or.rs b/tests/ui/unnecessary_map_or.rs index 4a9d69be1e9..50757715977 100644 --- a/tests/ui/unnecessary_map_or.rs +++ b/tests/ui/unnecessary_map_or.rs @@ -26,10 +26,9 @@ fn main() { let _ = Ok::, i32>(vec![5]).map_or(false, |n| n == [5]); let _ = Ok::(5).map_or(false, |n| n == 5); let _ = Some(5).map_or(false, |n| n == 5).then(|| 1); - - // shouldnt trigger let _ = Some(5).map_or(true, |n| n == 5); let _ = Some(5).map_or(true, |n| 5 == n); + macro_rules! x { () => { Some(1) @@ -54,10 +53,21 @@ fn main() { let r: Result = Ok(3); let _ = r.map_or(false, |x| x == 7); + // lint constructs that are not comparaisons as well + let func = |_x| true; + let r: Result = Ok(3); + let _ = r.map_or(false, func); + let _ = Some(5).map_or(false, func); + let _ = Some(5).map_or(true, func); + #[derive(PartialEq)] struct S2; let r: Result = Ok(4); let _ = r.map_or(false, |x| x == 8); + + // do not lint `Result::map_or(true, …)` + let r: Result = Ok(4); + let _ = r.map_or(true, |x| x == 8); } #[clippy::msrv = "1.69.0"] @@ -65,3 +75,9 @@ fn msrv_1_69() { // is_some_and added in 1.70.0 let _ = Some(5).map_or(false, |n| n == if 2 > 1 { n } else { 0 }); } + +#[clippy::msrv = "1.81.0"] +fn msrv_1_81() { + // is_none_or added in 1.82.0 + let _ = Some(5).map_or(true, |n| n == if 2 > 1 { n } else { 0 }); +} diff --git a/tests/ui/unnecessary_map_or.stderr b/tests/ui/unnecessary_map_or.stderr index 299a4e5da7a..890abb01228 100644 --- a/tests/ui/unnecessary_map_or.stderr +++ b/tests/ui/unnecessary_map_or.stderr @@ -1,4 +1,4 @@ -error: this `map_or` is redundant +error: this `map_or` can be simplified --> tests/ui/unnecessary_map_or.rs:12:13 | LL | let _ = Some(5).map_or(false, |n| n == 5); @@ -7,13 +7,13 @@ LL | let _ = Some(5).map_or(false, |n| n == 5); = note: `-D clippy::unnecessary-map-or` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::unnecessary_map_or)]` -error: this `map_or` is redundant +error: this `map_or` can be simplified --> tests/ui/unnecessary_map_or.rs:13:13 | LL | let _ = Some(5).map_or(true, |n| n != 5); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use a standard comparison instead: `(Some(5) != Some(5))` -error: this `map_or` is redundant +error: this `map_or` can be simplified --> tests/ui/unnecessary_map_or.rs:14:13 | LL | let _ = Some(5).map_or(false, |n| { @@ -23,7 +23,7 @@ LL | | n == 5 LL | | }); | |______^ help: use a standard comparison instead: `(Some(5) == Some(5))` -error: this `map_or` is redundant +error: this `map_or` can be simplified --> tests/ui/unnecessary_map_or.rs:18:13 | LL | let _ = Some(5).map_or(false, |n| { @@ -41,59 +41,89 @@ LL + 6 >= 5 LL ~ }); | -error: this `map_or` is redundant +error: this `map_or` can be simplified --> tests/ui/unnecessary_map_or.rs:22:13 | LL | let _ = Some(vec![5]).map_or(false, |n| n == [5]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use is_some_and instead: `Some(vec![5]).is_some_and(|n| n == [5])` -error: this `map_or` is redundant +error: this `map_or` can be simplified --> tests/ui/unnecessary_map_or.rs:23:13 | LL | let _ = Some(vec![1]).map_or(false, |n| vec![2] == n); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use is_some_and instead: `Some(vec![1]).is_some_and(|n| vec![2] == n)` -error: this `map_or` is redundant +error: this `map_or` can be simplified --> tests/ui/unnecessary_map_or.rs:24:13 | LL | let _ = Some(5).map_or(false, |n| n == n); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use is_some_and instead: `Some(5).is_some_and(|n| n == n)` -error: this `map_or` is redundant +error: this `map_or` can be simplified --> tests/ui/unnecessary_map_or.rs:25:13 | LL | let _ = Some(5).map_or(false, |n| n == if 2 > 1 { n } else { 0 }); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use is_some_and instead: `Some(5).is_some_and(|n| n == if 2 > 1 { n } else { 0 })` -error: this `map_or` is redundant +error: this `map_or` can be simplified --> tests/ui/unnecessary_map_or.rs:26:13 | LL | let _ = Ok::, i32>(vec![5]).map_or(false, |n| n == [5]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use is_ok_and instead: `Ok::, i32>(vec![5]).is_ok_and(|n| n == [5])` -error: this `map_or` is redundant +error: this `map_or` can be simplified --> tests/ui/unnecessary_map_or.rs:27:13 | LL | let _ = Ok::(5).map_or(false, |n| n == 5); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use a standard comparison instead: `(Ok::(5) == Ok(5))` -error: this `map_or` is redundant +error: this `map_or` can be simplified --> tests/ui/unnecessary_map_or.rs:28:13 | LL | let _ = Some(5).map_or(false, |n| n == 5).then(|| 1); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use a standard comparison instead: `(Some(5) == Some(5))` -error: this `map_or` is redundant - --> tests/ui/unnecessary_map_or.rs:55:13 +error: this `map_or` can be simplified + --> tests/ui/unnecessary_map_or.rs:29:13 + | +LL | let _ = Some(5).map_or(true, |n| n == 5); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use is_none_or instead: `Some(5).is_none_or(|n| n == 5)` + +error: this `map_or` can be simplified + --> tests/ui/unnecessary_map_or.rs:30:13 + | +LL | let _ = Some(5).map_or(true, |n| 5 == n); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use is_none_or instead: `Some(5).is_none_or(|n| 5 == n)` + +error: this `map_or` can be simplified + --> tests/ui/unnecessary_map_or.rs:54:13 | LL | let _ = r.map_or(false, |x| x == 7); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use is_ok_and instead: `r.is_ok_and(|x| x == 7)` -error: this `map_or` is redundant +error: this `map_or` can be simplified + --> tests/ui/unnecessary_map_or.rs:59:13 + | +LL | let _ = r.map_or(false, func); + | ^^^^^^^^^^^^^^^^^^^^^ help: use is_ok_and instead: `r.is_ok_and(func)` + +error: this `map_or` can be simplified --> tests/ui/unnecessary_map_or.rs:60:13 | +LL | let _ = Some(5).map_or(false, func); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use is_some_and instead: `Some(5).is_some_and(func)` + +error: this `map_or` can be simplified + --> tests/ui/unnecessary_map_or.rs:61:13 + | +LL | let _ = Some(5).map_or(true, func); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use is_none_or instead: `Some(5).is_none_or(func)` + +error: this `map_or` can be simplified + --> tests/ui/unnecessary_map_or.rs:66:13 + | LL | let _ = r.map_or(false, |x| x == 8); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use a standard comparison instead: `(r == Ok(8))` -error: aborting due to 13 previous errors +error: aborting due to 18 previous errors diff --git a/tests/ui/unused_format_specs.1.fixed b/tests/ui/unused_format_specs.1.fixed index b7d1cce2870..157c2b08d3c 100644 --- a/tests/ui/unused_format_specs.1.fixed +++ b/tests/ui/unused_format_specs.1.fixed @@ -33,3 +33,38 @@ fn should_not_lint() { let args = format_args!(""); println!("{args}"); } + +#[clippy::format_args] +macro_rules! usr_println { + ($target:expr, $($args:tt)*) => {{ + if $target { + println!($($args)*) + } + }}; +} + +fn should_lint_user() { + // prints `.`, not ` .` + usr_println!(true, "{:5}.", format!("")); + //~^ ERROR: format specifiers have no effect on `format_args!()` + //prints `abcde`, not `abc` + usr_println!(true, "{:.3}", format!("abcde")); + //~^ ERROR: format specifiers have no effect on `format_args!()` + + usr_println!(true, "{}.", format_args_from_macro!()); + //~^ ERROR: format specifiers have no effect on `format_args!()` + + let args = format_args!(""); + usr_println!(true, "{args}"); + //~^ ERROR: format specifiers have no effect on `format_args!()` +} + +fn should_not_lint_user() { + usr_println!(true, "{}", format_args!("")); + // Technically the same as `{}`, but the `format_args` docs specifically mention that you can use + // debug formatting so allow it + usr_println!(true, "{:?}", format_args!("")); + + let args = format_args!(""); + usr_println!(true, "{args}"); +} diff --git a/tests/ui/unused_format_specs.2.fixed b/tests/ui/unused_format_specs.2.fixed index 94bb6b7036b..92c7b951f3c 100644 --- a/tests/ui/unused_format_specs.2.fixed +++ b/tests/ui/unused_format_specs.2.fixed @@ -33,3 +33,38 @@ fn should_not_lint() { let args = format_args!(""); println!("{args}"); } + +#[clippy::format_args] +macro_rules! usr_println { + ($target:expr, $($args:tt)*) => {{ + if $target { + println!($($args)*) + } + }}; +} + +fn should_lint_user() { + // prints `.`, not ` .` + usr_println!(true, "{}.", format_args!("")); + //~^ ERROR: format specifiers have no effect on `format_args!()` + //prints `abcde`, not `abc` + usr_println!(true, "{}", format_args!("abcde")); + //~^ ERROR: format specifiers have no effect on `format_args!()` + + usr_println!(true, "{}.", format_args_from_macro!()); + //~^ ERROR: format specifiers have no effect on `format_args!()` + + let args = format_args!(""); + usr_println!(true, "{args}"); + //~^ ERROR: format specifiers have no effect on `format_args!()` +} + +fn should_not_lint_user() { + usr_println!(true, "{}", format_args!("")); + // Technically the same as `{}`, but the `format_args` docs specifically mention that you can use + // debug formatting so allow it + usr_println!(true, "{:?}", format_args!("")); + + let args = format_args!(""); + usr_println!(true, "{args}"); +} diff --git a/tests/ui/unused_format_specs.rs b/tests/ui/unused_format_specs.rs index 2c85e371149..a5df4d8a866 100644 --- a/tests/ui/unused_format_specs.rs +++ b/tests/ui/unused_format_specs.rs @@ -33,3 +33,38 @@ fn should_not_lint() { let args = format_args!(""); println!("{args}"); } + +#[clippy::format_args] +macro_rules! usr_println { + ($target:expr, $($args:tt)*) => {{ + if $target { + println!($($args)*) + } + }}; +} + +fn should_lint_user() { + // prints `.`, not ` .` + usr_println!(true, "{:5}.", format_args!("")); + //~^ ERROR: format specifiers have no effect on `format_args!()` + //prints `abcde`, not `abc` + usr_println!(true, "{:.3}", format_args!("abcde")); + //~^ ERROR: format specifiers have no effect on `format_args!()` + + usr_println!(true, "{:5}.", format_args_from_macro!()); + //~^ ERROR: format specifiers have no effect on `format_args!()` + + let args = format_args!(""); + usr_println!(true, "{args:5}"); + //~^ ERROR: format specifiers have no effect on `format_args!()` +} + +fn should_not_lint_user() { + usr_println!(true, "{}", format_args!("")); + // Technically the same as `{}`, but the `format_args` docs specifically mention that you can use + // debug formatting so allow it + usr_println!(true, "{:?}", format_args!("")); + + let args = format_args!(""); + usr_println!(true, "{args}"); +} diff --git a/tests/ui/unused_format_specs.stderr b/tests/ui/unused_format_specs.stderr index 2b5c81c63d6..df61d59130e 100644 --- a/tests/ui/unused_format_specs.stderr +++ b/tests/ui/unused_format_specs.stderr @@ -58,5 +58,63 @@ LL - println!("{args:5}"); LL + println!("{args}"); | -error: aborting due to 4 previous errors +error: format specifiers have no effect on `format_args!()` + --> tests/ui/unused_format_specs.rs:48:25 + | +LL | usr_println!(true, "{:5}.", format_args!("")); + | ^^^^ + | +help: for the width to apply consider using `format!()` + | +LL | usr_println!(true, "{:5}.", format!("")); + | ~~~~~~ +help: if the current behavior is intentional, remove the format specifiers + | +LL - usr_println!(true, "{:5}.", format_args!("")); +LL + usr_println!(true, "{}.", format_args!("")); + | + +error: format specifiers have no effect on `format_args!()` + --> tests/ui/unused_format_specs.rs:51:25 + | +LL | usr_println!(true, "{:.3}", format_args!("abcde")); + | ^^^^^ + | +help: for the precision to apply consider using `format!()` + | +LL | usr_println!(true, "{:.3}", format!("abcde")); + | ~~~~~~ +help: if the current behavior is intentional, remove the format specifiers + | +LL - usr_println!(true, "{:.3}", format_args!("abcde")); +LL + usr_println!(true, "{}", format_args!("abcde")); + | + +error: format specifiers have no effect on `format_args!()` + --> tests/ui/unused_format_specs.rs:54:25 + | +LL | usr_println!(true, "{:5}.", format_args_from_macro!()); + | ^^^^ + | + = help: for the width to apply consider using `format!()` +help: if the current behavior is intentional, remove the format specifiers + | +LL - usr_println!(true, "{:5}.", format_args_from_macro!()); +LL + usr_println!(true, "{}.", format_args_from_macro!()); + | + +error: format specifiers have no effect on `format_args!()` + --> tests/ui/unused_format_specs.rs:58:25 + | +LL | usr_println!(true, "{args:5}"); + | ^^^^^^^^ + | + = help: for the width to apply consider using `format!()` +help: if the current behavior is intentional, remove the format specifiers + | +LL - usr_println!(true, "{args:5}"); +LL + usr_println!(true, "{args}"); + | + +error: aborting due to 8 previous errors -- cgit 1.4.1-3-g733a5 From 8de6e86b77185de4c4d46cee80528bca6d8284ee Mon Sep 17 00:00:00 2001 From: Nicholas Nethercote Date: Mon, 25 Nov 2024 13:08:54 +1100 Subject: Stop using `HybridBitSet` in clippy. The compiler uses `BitSet`, because the number of locals doesn't get that high, so clippy should do likewise. --- clippy_utils/src/mir/possible_borrower.rs | 10 +++++----- clippy_utils/src/mir/possible_origin.rs | 4 ++-- clippy_utils/src/mir/transitive_relation.rs | 6 +++--- 3 files changed, 10 insertions(+), 10 deletions(-) diff --git a/clippy_utils/src/mir/possible_borrower.rs b/clippy_utils/src/mir/possible_borrower.rs index 6b3078f52af..17e6558a41c 100644 --- a/clippy_utils/src/mir/possible_borrower.rs +++ b/clippy_utils/src/mir/possible_borrower.rs @@ -2,7 +2,7 @@ use super::possible_origin::PossibleOriginVisitor; use super::transitive_relation::TransitiveRelation; use crate::ty::is_copy; use rustc_data_structures::fx::FxHashMap; -use rustc_index::bit_set::{BitSet, HybridBitSet}; +use rustc_index::bit_set::BitSet; use rustc_lint::LateContext; use rustc_middle::mir::visit::Visitor as _; use rustc_middle::mir::{self, Mutability}; @@ -21,14 +21,14 @@ struct PossibleBorrowerVisitor<'a, 'b, 'tcx> { possible_borrower: TransitiveRelation, body: &'b mir::Body<'tcx>, cx: &'a LateContext<'tcx>, - possible_origin: FxHashMap>, + possible_origin: FxHashMap>, } impl<'a, 'b, 'tcx> PossibleBorrowerVisitor<'a, 'b, 'tcx> { fn new( cx: &'a LateContext<'tcx>, body: &'b mir::Body<'tcx>, - possible_origin: FxHashMap>, + possible_origin: FxHashMap>, ) -> Self { Self { possible_borrower: TransitiveRelation::default(), @@ -119,7 +119,7 @@ impl<'tcx> mir::visit::Visitor<'tcx> for PossibleBorrowerVisitor<'_, '_, 'tcx> { let mut mutable_variables: Vec = mutable_borrowers .iter() .filter_map(|r| self.possible_origin.get(r)) - .flat_map(HybridBitSet::iter) + .flat_map(BitSet::iter) .collect(); if ContainsRegion.visit_ty(self.body.local_decls[*dest].ty).is_break() { @@ -171,7 +171,7 @@ fn rvalue_locals(rvalue: &mir::Rvalue<'_>, mut visit: impl FnMut(mir::Local)) { #[allow(clippy::module_name_repetitions)] pub struct PossibleBorrowerMap<'b, 'tcx> { /// Mapping `Local -> its possible borrowers` - pub map: FxHashMap>, + pub map: FxHashMap>, maybe_live: ResultsCursor<'b, 'tcx, MaybeStorageLive<'tcx>>, // Caches to avoid allocation of `BitSet` on every query pub bitset: (BitSet, BitSet), diff --git a/clippy_utils/src/mir/possible_origin.rs b/clippy_utils/src/mir/possible_origin.rs index 4157b3f4930..47b93aad20c 100644 --- a/clippy_utils/src/mir/possible_origin.rs +++ b/clippy_utils/src/mir/possible_origin.rs @@ -1,7 +1,7 @@ use super::transitive_relation::TransitiveRelation; use crate::ty::is_copy; use rustc_data_structures::fx::FxHashMap; -use rustc_index::bit_set::HybridBitSet; +use rustc_index::bit_set::BitSet; use rustc_lint::LateContext; use rustc_middle::mir; @@ -22,7 +22,7 @@ impl<'a, 'tcx> PossibleOriginVisitor<'a, 'tcx> { } } - pub fn into_map(self, cx: &LateContext<'tcx>) -> FxHashMap> { + pub fn into_map(self, cx: &LateContext<'tcx>) -> FxHashMap> { let mut map = FxHashMap::default(); for row in (1..self.body.local_decls.len()).map(mir::Local::from_usize) { if is_copy(cx, self.body.local_decls[row].ty) { diff --git a/clippy_utils/src/mir/transitive_relation.rs b/clippy_utils/src/mir/transitive_relation.rs index 7fe2960739f..74d1f60af71 100644 --- a/clippy_utils/src/mir/transitive_relation.rs +++ b/clippy_utils/src/mir/transitive_relation.rs @@ -1,5 +1,5 @@ use rustc_data_structures::fx::FxHashMap; -use rustc_index::bit_set::HybridBitSet; +use rustc_index::bit_set::BitSet; use rustc_middle::mir; #[derive(Default)] @@ -12,8 +12,8 @@ impl TransitiveRelation { self.relations.entry(a).or_default().push(b); } - pub fn reachable_from(&self, a: mir::Local, domain_size: usize) -> HybridBitSet { - let mut seen = HybridBitSet::new_empty(domain_size); + pub fn reachable_from(&self, a: mir::Local, domain_size: usize) -> BitSet { + let mut seen = BitSet::new_empty(domain_size); let mut stack = vec![a]; while let Some(u) = stack.pop() { if let Some(edges) = self.relations.get(&u) { -- cgit 1.4.1-3-g733a5 From f5f2c51e7094c633e344887d04cbaa5592f6b6f1 Mon Sep 17 00:00:00 2001 From: Philipp Krones Date: Sun, 17 Nov 2024 18:44:42 +0100 Subject: Update backport, release and sync documentation --- book/src/development/infrastructure/backport.md | 126 +++++++++++++++-------- book/src/development/infrastructure/release.md | 128 ++++++++++++------------ book/src/development/infrastructure/sync.md | 41 +++----- 3 files changed, 162 insertions(+), 133 deletions(-) diff --git a/book/src/development/infrastructure/backport.md b/book/src/development/infrastructure/backport.md index 6920c4e4656..9526d8af1c9 100644 --- a/book/src/development/infrastructure/backport.md +++ b/book/src/development/infrastructure/backport.md @@ -5,68 +5,108 @@ Backports in Clippy are rare and should be approved by the Clippy team. For example, a backport is done, if a crucial ICE was fixed or a lint is broken to a point, that it has to be disabled, before landing on stable. -Backports are done to the `beta` branch of Clippy. Backports to stable Clippy -releases basically don't exist, since this would require a Rust point release, -which is almost never justifiable for a Clippy fix. +> Note: If you think a PR should be backported you can label it with +> `beta-nominated`. This has to be done before the Thursday the week before the +> release. +## Filtering PRs to backport -## Backport the changes +First, find all labeled PRs using [this filter][beta-accepted-prs]. + +Next, look at each PR individually. There are a few things to check. Those need +some explanation and are quite subjective. Good judgement is required. + +1. **Is the fix worth a backport?** + + This is really subjective. An ICE fix usually is. Moving a lint to a _lower_ + group (from warn- to allow-by-default) usually as well. An FP fix usually not + (on its own). If a backport is done anyway, FP fixes might also be included. + If the PR has a lot of changes, backports must be considered more carefully. + +2. **Is the problem that was fixed by the PR already in `beta`?** + + It could be that the problem that was fixed by the PR hasn't made it to the + `beta` branch of the Rust repo yet. If that's the case, and the fix is + already synced to the Rust repo, the fix doesn't need to be backported, as it + will hit stable together with the commit that introduced the problem. If the + fix PR is not synced yet, the fix PR either needs to be "backported" to the + Rust `master` branch or to `beta` in the next backport cycle. + +3. **Make sure that the fix is on `master` before porting to `beta`** + + The fix must already be synced to the Rust `master` branch. Otherwise, the + next `beta` will be missing this fix again. If it is not yet in `master` it + should probably not be backported. If the backport is really important, do an + out-of-cycle sync first. However, the out-of-cycle sync should be small, + because the changes in that sync will get right into `beta`, without being + tested in `nightly` first. + +[beta-accepted-prs]: https://github.com/rust-lang/rust-clippy/issues?q=label%3Abeta-nominated + +## Preparation + +> Note: All commands in this chapter will be run in the Rust clone. + +Follow the instructions in [defining remotes] to define the `clippy-upstream` +remote in the Rust repository. -Backports are done on the beta branch of the Clippy repository. +After that, fetch the remote with ```bash -# Assuming the current directory corresponds to the Clippy repository -$ git checkout beta -$ git checkout -b backport -$ git cherry-pick # `` is the commit hash of the commit(s), that should be backported -$ git push origin backport +git fetch clippy-upstream master ``` -Now you should test that the backport passes all the tests in the Rust -repository. You can do this with: +Then, switch to the `beta` branch: ```bash -# Assuming the current directory corresponds to the Rust repository -$ git checkout beta -# Make sure to change `your-github-name` to your github name in the following command -$ git subtree pull -p src/tools/clippy https://github.com//rust-clippy backport -$ ./x.py test src/tools/clippy +git switch beta +git fetch upstream +git reset --hard upstream/beta ``` -Should the test fail, you can fix Clippy directly in the Rust repository. This -has to be first applied to the Clippy beta branch and then again synced to the -Rust repository, though. The easiest way to do this is: +[defining remotes]: release.md#defining-remotes + +## Backport the changes + +When a PR is merged with the GitHub merge queue, the PR is closed with the message + +> \ (#\) + +This commit needs to be backported. To do that, find the `` of that commit +and run the following command in the clone of the **Rust repository**: ```bash -# In the Rust repository -$ git diff --patch --relative=src/tools/clippy > clippy.patch -# In the Clippy repository -$ git apply /path/to/clippy.patch -$ git add -u -$ git commit -m "Fix rustup fallout" -$ git push origin backport +git cherry-pick -m 1 `` ``` -After this, you can open a PR to the `beta` branch of the Clippy repository. +Do this for all PRs that should be backported. +## Open PR in the Rust repository -## Update Clippy in the Rust Repository +Next, open the PR for the backport. Make sure, the PR is opened towards the +`beta` branch and not the `master` branch. The PR description should look like +this: -This step must be done, **after** the PR of the previous step was merged. +``` +[beta] Clippy backports -After the backport landed in the Clippy repository, the branch has to be synced -back to the beta branch of the Rust repository. +r? @Mark-Simulacrum -```bash -# Assuming the current directory corresponds to the Rust repository -$ git checkout beta -$ git checkout -b clippy_backport -$ git subtree pull -p src/tools/clippy https://github.com/rust-lang/rust-clippy beta -$ git push origin clippy_backport +Backports: +- +- ... + + ``` -Make sure to test the backport in the Rust repository before opening a PR. This -is done with `./x.py test src/tools/clippy`. If that passes all tests, open a PR -to the `beta` branch of the Rust repository. In this PR you should tag the -Clippy team member, that agreed to the backport or the `@rust-lang/clippy` team. -Make sure to add `[beta]` to the title of the PR. +Mark is from the release team and they ultimately have to merge the PR before +branching a new `beta` version. Tag them to take care of the backport. Next, +list all the backports and give a short summary what's backported and why it is +worth backporting this. + +## Relabel backported PRs + +When a PR is backported to Rust `beta`, label the PR with `beta-accepted`. This +will then get picked up when [writing the changelog]. + +[writing the changelog]: changelog_update.md#31-include-beta-accepted-prs diff --git a/book/src/development/infrastructure/release.md b/book/src/development/infrastructure/release.md index 98fabf8e89a..20b870eb69a 100644 --- a/book/src/development/infrastructure/release.md +++ b/book/src/development/infrastructure/release.md @@ -7,112 +7,114 @@ Clippy is released together with stable Rust releases. The dates for these releases can be found at the [Rust Forge]. This document explains the necessary steps to create a Clippy release. -1. [Remerge the `beta` branch](#remerge-the-beta-branch) -2. [Update the `beta` branch](#update-the-beta-branch) -3. [Find the Clippy commit](#find-the-clippy-commit) -4. [Tag the stable commit](#tag-the-stable-commit) -5. [Update `CHANGELOG.md`](#update-changelogmd) - -> _NOTE:_ This document is for stable Rust releases, not for point releases. For -> point releases, step 1. and 2. should be enough. +1. [Defining Remotes](#defining-remotes) +1. [Bump Version](#bump-version) +1. [Find the Clippy commit](#find-the-clippy-commit) +1. [Update the `beta` branch](#update-the-beta-branch) +1. [Update the `stable` branch](#update-the-stable-branch) +1. [Tag the stable commit](#tag-the-stable-commit) +1. [Update `CHANGELOG.md`](#update-changelogmd) [Rust Forge]: https://forge.rust-lang.org/ -## Remerge the `beta` branch +## Defining Remotes + +You may want to define the `upstream` remote of the Clippy project to simplify +the following steps. However, this is optional and you can replace `upstream` +with the full URL instead. + +```bash +git remote add upstream git@github.com:rust-lang/rust-clippy +``` -This step is only necessary, if since the last release something was backported -to the beta Rust release. The remerge is then necessary, to make sure that the -Clippy commit, that was used by the now stable Rust release, persists in the -tree of the Clippy repository. +## Bump Version -To find out if this step is necessary run +When a release needs to be done, `cargo test` will fail, if the versions in the +`Cargo.toml` are not correct. During that sync, the versions need to be bumped. +This is done by running: ```bash -# Assumes that the local master branch of rust-lang/rust-clippy is up-to-date -$ git fetch upstream -$ git branch master --contains upstream/beta +cargo dev release bump_version ``` -If this command outputs `master`, this step is **not** necessary. +This will increase the version number of each relevant `Cargo.toml` file. After +that, just commit the updated files with: ```bash -# Assuming `HEAD` is the current `master` branch of rust-lang/rust-clippy -$ git checkout -b backport_remerge -$ git merge upstream/beta -$ git diff # This diff has to be empty, otherwise something with the remerge failed -$ git push origin backport_remerge # This can be pushed to your fork +git commit -m "Bump Clippy version -> 0.1.XY" **/*Cargo.toml ``` -After this, open a PR to the master branch. In this PR, the commit hash of the -`HEAD` of the `beta` branch must exist. In addition to that, no files should be -changed by this PR. +`XY` should be exchanged with the corresponding version -## Update the `beta` branch +## Find the Clippy commit -This step must be done **after** the PR of the previous step was merged. +For both updating the `beta` and the `stable` branch, the first step is to find +the Clippy commit of the last Clippy sync done in the respective Rust branch. -First, the Clippy commit of the `beta` branch of the Rust repository has to be -determined. +Running the following commands _in the Rust repo_ will get the commit for the +specified ``: ```bash -# Assuming the current directory corresponds to the Rust repository -$ git fetch upstream -$ git checkout upstream/beta -$ BETA_SHA=$(git log --oneline -- src/tools/clippy/ | grep -o "Merge commit '[a-f0-9]*' into .*" | head -1 | sed -e "s/Merge commit '\([a-f0-9]*\)' into .*/\1/g") +git switch +SHA=$(git log --oneline -- src/tools/clippy/ | grep -o "Merge commit '[a-f0-9]*' into .*" | head -1 | sed -e "s/Merge commit '\([a-f0-9]*\)' into .*/\1/g") ``` -After finding the Clippy commit, the `beta` branch in the Clippy repository can -be updated. +Where `` is one of `stable`, `beta`, or `master`. + +## Update the `beta` branch + +After getting the commit of the `beta` branch, the `beta` branch in the Clippy +repository can be updated. ```bash -# Assuming the current directory corresponds to the Clippy repository -$ git checkout beta -$ git reset --hard $BETA_SHA -$ git push upstream beta +git checkout beta +git reset --hard $SHA +git push upstream beta ``` -## Find the Clippy commit +## Update the `stable` branch -The first step is to tag the Clippy commit, that is included in the stable Rust -release. This commit can be found in the Rust repository. +After getting the commit of the `stable` branch, the `stable` branch in the +Clippy repository can be updated. ```bash -# Assuming the current directory corresponds to the Rust repository -$ git fetch upstream # `upstream` is the `rust-lang/rust` remote -$ git checkout 1.XX.0 # XX should be exchanged with the corresponding version -$ SHA=$(git log --oneline -- src/tools/clippy/ | grep -o "Merge commit '[a-f0-9]*' into .*" | head -1 | sed -e "s/Merge commit '\([a-f0-9]*\)' into .*/\1/g") +git checkout stable +git reset --hard $SHA +git push upstream stable ``` -## Tag the stable commit +## Tag the `stable` commit -After finding the Clippy commit, it can be tagged with the release number. +After updating the `stable` branch, tag the HEAD commit and push it to the +Clippy repo. + +> Note: Only push the tag once the Deploy GitHub action of the `beta` branch is +> finished. Otherwise the deploy for the tag might fail. ```bash -# Assuming the current directory corresponds to the Clippy repository -$ git checkout $SHA -$ git tag rust-1.XX.0 # XX should be exchanged with the corresponding version -$ git push upstream rust-1.XX.0 # `upstream` is the `rust-lang/rust-clippy` remote +git tag rust-1.XX.0 # XX should be exchanged with the corresponding version +git push upstream rust-1.XX.0 # `upstream` is the `rust-lang/rust-clippy` remote ``` After this, the release should be available on the Clippy [release page]. [release page]: https://github.com/rust-lang/rust-clippy/releases -## Update the `stable` branch +## Publish `clippy_utils` + +The `clippy_utils` crate is published to `crates.io` without any stability +guarantees. To do this, after the [sync] and the release is done, switch back to +the `upstream/master` branch and publish `clippy_utils`: -At this step you should have already checked out the commit of the `rust-1.XX.0` -tag. Updating the stable branch from here is as easy as: +> Note: The Rustup PR bumping the nightly and Clippy version **must** be merged +> before doing this. ```bash -# Assuming the current directory corresponds to the Clippy repository and the -# commit of the just created rust-1.XX.0 tag is checked out. -$ git push upstream rust-1.XX.0:stable # `upstream` is the `rust-lang/rust-clippy` remote +git switch master && git pull upstream master +cargo publish --manifest-path clippy_utils/Cargo.toml ``` -> _NOTE:_ Usually there are no stable backports for Clippy, so this update -> should be possible without force pushing or anything like this. If there -> should have happened a stable backport, make sure to re-merge those changes -> just as with the `beta` branch. +[sync]: sync.md ## Update `CHANGELOG.md` diff --git a/book/src/development/infrastructure/sync.md b/book/src/development/infrastructure/sync.md index e1fe92f9525..da1ad586607 100644 --- a/book/src/development/infrastructure/sync.md +++ b/book/src/development/infrastructure/sync.md @@ -21,6 +21,8 @@ to beta. For reference, the first sync following this cadence was performed the This process is described in detail in the following sections. For general information about `subtree`s in the Rust repository see [the rustc-dev-guide][subtree]. +[subtree]: https://rustc-dev-guide.rust-lang.org/external-repos.html#external-dependencies-subtree + ## Patching git-subtree to work with big repos Currently, there's a bug in `git-subtree` that prevents it from working properly @@ -50,23 +52,11 @@ sudo chown --reference=/usr/lib/git-core/git-subtree~ /usr/lib/git-core/git-subt > `bash` instead. You can do this by editing the first line of the `git-subtree` > script and changing `sh` to `bash`. -## Defining remotes - -You may want to define remotes, so you don't have to type out the remote -addresses on every sync. You can do this with the following commands (these -commands still have to be run inside the `rust` directory): - -```bash -# Set clippy-upstream remote for pulls -$ git remote add clippy-upstream https://github.com/rust-lang/rust-clippy -# Make sure to not push to the upstream repo -$ git remote set-url --push clippy-upstream DISABLED -# Set a local remote -$ git remote add clippy-local /path/to/rust-clippy -``` +> Note: The following sections assume that you have set up remotes following the +> instructions in [defining remotes]. -> Note: The following sections assume that you have set those remotes with the -> above remote names. +[gitgitgadget-pr]: https://github.com/gitgitgadget/git/pull/493 +[defining remotes]: release.md#defining-remotes ## Performing the sync from [`rust-lang/rust`] to Clippy @@ -78,9 +68,9 @@ to be run inside the `rust` directory): `rustup check`. 3. Sync the changes to the rust-copy of Clippy to your Clippy fork: ```bash - # Be sure to either use a net-new branch, e.g. `sync-from-rust`, or delete the branch beforehand + # Be sure to either use a net-new branch, e.g. `rustup`, or delete the branch beforehand # because changes cannot be fast forwarded and you have to run this command again. - git subtree push -P src/tools/clippy clippy-local sync-from-rust + git subtree push -P src/tools/clippy clippy-local rustup ``` > _Note:_ Most of the time you have to create a merge commit in the @@ -88,21 +78,22 @@ to be run inside the `rust` directory): > rust-copy of Clippy): ```bash git fetch upstream # assuming upstream is the rust-lang/rust remote - git checkout sync-from-rust + git switch rustup git merge upstream/master --no-ff ``` > Note: This is one of the few instances where a merge commit is allowed in > a PR. -4. Bump the nightly version in the Clippy repository by changing the date in the - rust-toolchain file to the current date and committing it with the message: +4. Bump the nightly version in the Clippy repository by running these commands: ```bash - git commit -m "Bump nightly version -> YYYY-MM-DD" + cargo dev sync update_nightly + git commit -m "Bump nightly version -> YYYY-MM-DD" rust-toolchain clippy_utils/README.md ``` 5. Open a PR to `rust-lang/rust-clippy` and wait for it to get merged (to accelerate the process ping the `@rust-lang/clippy` team in your PR and/or ask them in the [Zulip] stream.) [Zulip]: https://rust-lang.zulipchat.com/#narrow/stream/clippy +[`rust-lang/rust`]: https://github.com/rust-lang/rust ## Performing the sync from Clippy to [`rust-lang/rust`] @@ -111,11 +102,7 @@ All the following commands have to be run inside the `rust` directory. 1. Make sure you have checked out the latest `master` of `rust-lang/rust`. 2. Sync the `rust-lang/rust-clippy` master to the rust-copy of Clippy: ```bash - git checkout -b sync-from-clippy + git switch -c clippy-subtree-update git subtree pull -P src/tools/clippy clippy-upstream master ``` 3. Open a PR to [`rust-lang/rust`] - -[gitgitgadget-pr]: https://github.com/gitgitgadget/git/pull/493 -[subtree]: https://rustc-dev-guide.rust-lang.org/external-repos.html#external-dependencies-subtree -[`rust-lang/rust`]: https://github.com/rust-lang/rust -- cgit 1.4.1-3-g733a5 From 21115b3024aa6d734786540e4efed1aac5d97879 Mon Sep 17 00:00:00 2001 From: BD103 <59022059+BD103@users.noreply.github.com> Date: Mon, 25 Nov 2024 19:23:11 -0500 Subject: refactor(utils): move top-level files to `mod.rs` when applicable --- clippy_utils/src/ast_utils.rs | 883 ------------------------ clippy_utils/src/ast_utils/mod.rs | 883 ++++++++++++++++++++++++ clippy_utils/src/ty.rs | 1343 ------------------------------------- clippy_utils/src/ty/mod.rs | 1343 +++++++++++++++++++++++++++++++++++++ 4 files changed, 2226 insertions(+), 2226 deletions(-) delete mode 100644 clippy_utils/src/ast_utils.rs create mode 100644 clippy_utils/src/ast_utils/mod.rs delete mode 100644 clippy_utils/src/ty.rs create mode 100644 clippy_utils/src/ty/mod.rs diff --git a/clippy_utils/src/ast_utils.rs b/clippy_utils/src/ast_utils.rs deleted file mode 100644 index c90f4a6ebfe..00000000000 --- a/clippy_utils/src/ast_utils.rs +++ /dev/null @@ -1,883 +0,0 @@ -//! Utilities for manipulating and extracting information from `rustc_ast::ast`. -//! -//! - The `eq_foobar` functions test for semantic equality but ignores `NodeId`s and `Span`s. - -#![allow(clippy::wildcard_imports, clippy::enum_glob_use)] - -use crate::{both, over}; -use rustc_ast::ptr::P; -use rustc_ast::{self as ast, *}; -use rustc_span::symbol::Ident; -use std::mem; - -pub mod ident_iter; -pub use ident_iter::IdentIter; - -pub fn is_useless_with_eq_exprs(kind: BinOpKind) -> bool { - use BinOpKind::*; - matches!( - kind, - Sub | Div | Eq | Lt | Le | Gt | Ge | Ne | And | Or | BitXor | BitAnd | BitOr - ) -} - -/// Checks if each element in the first slice is contained within the latter as per `eq_fn`. -pub fn unordered_over(left: &[X], right: &[X], mut eq_fn: impl FnMut(&X, &X) -> bool) -> bool { - left.len() == right.len() && left.iter().all(|l| right.iter().any(|r| eq_fn(l, r))) -} - -pub fn eq_id(l: Ident, r: Ident) -> bool { - l.name == r.name -} - -pub fn eq_pat(l: &Pat, r: &Pat) -> bool { - use PatKind::*; - match (&l.kind, &r.kind) { - (Paren(l), _) => eq_pat(l, r), - (_, Paren(r)) => eq_pat(l, r), - (Wild, Wild) | (Rest, Rest) => true, - (Lit(l), Lit(r)) => eq_expr(l, r), - (Ident(b1, i1, s1), Ident(b2, i2, s2)) => { - b1 == b2 && eq_id(*i1, *i2) && both(s1.as_deref(), s2.as_deref(), eq_pat) - }, - (Range(lf, lt, le), Range(rf, rt, re)) => { - eq_expr_opt(lf.as_ref(), rf.as_ref()) - && eq_expr_opt(lt.as_ref(), rt.as_ref()) - && eq_range_end(&le.node, &re.node) - }, - (Box(l), Box(r)) - | (Ref(l, Mutability::Not), Ref(r, Mutability::Not)) - | (Ref(l, Mutability::Mut), Ref(r, Mutability::Mut)) => eq_pat(l, r), - (Tuple(l), Tuple(r)) | (Slice(l), Slice(r)) => over(l, r, |l, r| eq_pat(l, r)), - (Path(lq, lp), Path(rq, rp)) => both(lq.as_ref(), rq.as_ref(), eq_qself) && eq_path(lp, rp), - (TupleStruct(lqself, lp, lfs), TupleStruct(rqself, rp, rfs)) => { - eq_maybe_qself(lqself.as_ref(), rqself.as_ref()) && eq_path(lp, rp) && over(lfs, rfs, |l, r| eq_pat(l, r)) - }, - (Struct(lqself, lp, lfs, lr), Struct(rqself, rp, rfs, rr)) => { - lr == rr - && eq_maybe_qself(lqself.as_ref(), rqself.as_ref()) - && eq_path(lp, rp) - && unordered_over(lfs, rfs, eq_field_pat) - }, - (Or(ls), Or(rs)) => unordered_over(ls, rs, |l, r| eq_pat(l, r)), - (MacCall(l), MacCall(r)) => eq_mac_call(l, r), - _ => false, - } -} - -pub fn eq_range_end(l: &RangeEnd, r: &RangeEnd) -> bool { - match (l, r) { - (RangeEnd::Excluded, RangeEnd::Excluded) => true, - (RangeEnd::Included(l), RangeEnd::Included(r)) => { - matches!(l, RangeSyntax::DotDotEq) == matches!(r, RangeSyntax::DotDotEq) - }, - _ => false, - } -} - -pub fn eq_field_pat(l: &PatField, r: &PatField) -> bool { - l.is_placeholder == r.is_placeholder - && eq_id(l.ident, r.ident) - && eq_pat(&l.pat, &r.pat) - && over(&l.attrs, &r.attrs, eq_attr) -} - -pub fn eq_qself(l: &P, r: &P) -> bool { - l.position == r.position && eq_ty(&l.ty, &r.ty) -} - -pub fn eq_maybe_qself(l: Option<&P>, r: Option<&P>) -> bool { - match (l, r) { - (Some(l), Some(r)) => eq_qself(l, r), - (None, None) => true, - _ => false, - } -} - -pub fn eq_path(l: &Path, r: &Path) -> bool { - over(&l.segments, &r.segments, eq_path_seg) -} - -pub fn eq_path_seg(l: &PathSegment, r: &PathSegment) -> bool { - eq_id(l.ident, r.ident) && both(l.args.as_ref(), r.args.as_ref(), |l, r| eq_generic_args(l, r)) -} - -pub fn eq_generic_args(l: &GenericArgs, r: &GenericArgs) -> bool { - match (l, r) { - (AngleBracketed(l), AngleBracketed(r)) => over(&l.args, &r.args, eq_angle_arg), - (Parenthesized(l), Parenthesized(r)) => { - over(&l.inputs, &r.inputs, |l, r| eq_ty(l, r)) && eq_fn_ret_ty(&l.output, &r.output) - }, - _ => false, - } -} - -pub fn eq_angle_arg(l: &AngleBracketedArg, r: &AngleBracketedArg) -> bool { - match (l, r) { - (AngleBracketedArg::Arg(l), AngleBracketedArg::Arg(r)) => eq_generic_arg(l, r), - (AngleBracketedArg::Constraint(l), AngleBracketedArg::Constraint(r)) => eq_assoc_item_constraint(l, r), - _ => false, - } -} - -pub fn eq_generic_arg(l: &GenericArg, r: &GenericArg) -> bool { - match (l, r) { - (GenericArg::Lifetime(l), GenericArg::Lifetime(r)) => eq_id(l.ident, r.ident), - (GenericArg::Type(l), GenericArg::Type(r)) => eq_ty(l, r), - (GenericArg::Const(l), GenericArg::Const(r)) => eq_expr(&l.value, &r.value), - _ => false, - } -} - -pub fn eq_expr_opt(l: Option<&P>, r: Option<&P>) -> bool { - both(l, r, |l, r| eq_expr(l, r)) -} - -pub fn eq_struct_rest(l: &StructRest, r: &StructRest) -> bool { - match (l, r) { - (StructRest::Base(lb), StructRest::Base(rb)) => eq_expr(lb, rb), - (StructRest::Rest(_), StructRest::Rest(_)) | (StructRest::None, StructRest::None) => true, - _ => false, - } -} - -#[allow(clippy::too_many_lines)] // Just a big match statement -pub fn eq_expr(l: &Expr, r: &Expr) -> bool { - use ExprKind::*; - if !over(&l.attrs, &r.attrs, eq_attr) { - return false; - } - match (&l.kind, &r.kind) { - (Paren(l), _) => eq_expr(l, r), - (_, Paren(r)) => eq_expr(l, r), - (Err(_), Err(_)) => true, - (Dummy, _) | (_, Dummy) => unreachable!("comparing `ExprKind::Dummy`"), - (Try(l), Try(r)) | (Await(l, _), Await(r, _)) => eq_expr(l, r), - (Array(l), Array(r)) => over(l, r, |l, r| eq_expr(l, r)), - (Tup(l), Tup(r)) => over(l, r, |l, r| eq_expr(l, r)), - (Repeat(le, ls), Repeat(re, rs)) => eq_expr(le, re) && eq_expr(&ls.value, &rs.value), - (Call(lc, la), Call(rc, ra)) => eq_expr(lc, rc) && over(la, ra, |l, r| eq_expr(l, r)), - ( - MethodCall(box ast::MethodCall { - seg: ls, - receiver: lr, - args: la, - .. - }), - MethodCall(box ast::MethodCall { - seg: rs, - receiver: rr, - args: ra, - .. - }), - ) => eq_path_seg(ls, rs) && eq_expr(lr, rr) && over(la, ra, |l, r| eq_expr(l, r)), - (Binary(lo, ll, lr), Binary(ro, rl, rr)) => lo.node == ro.node && eq_expr(ll, rl) && eq_expr(lr, rr), - (Unary(lo, l), Unary(ro, r)) => mem::discriminant(lo) == mem::discriminant(ro) && eq_expr(l, r), - (Lit(l), Lit(r)) => l == r, - (Cast(l, lt), Cast(r, rt)) | (Type(l, lt), Type(r, rt)) => eq_expr(l, r) && eq_ty(lt, rt), - (Let(lp, le, _, _), Let(rp, re, _, _)) => eq_pat(lp, rp) && eq_expr(le, re), - (If(lc, lt, le), If(rc, rt, re)) => { - eq_expr(lc, rc) && eq_block(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()) - }, - (While(lc, lt, ll), While(rc, rt, rl)) => { - eq_label(ll.as_ref(), rl.as_ref()) && eq_expr(lc, rc) && eq_block(lt, rt) - }, - ( - ForLoop { - pat: lp, - iter: li, - body: lt, - label: ll, - kind: lk, - }, - ForLoop { - pat: rp, - iter: ri, - body: rt, - label: rl, - kind: rk, - }, - ) => eq_label(ll.as_ref(), rl.as_ref()) && eq_pat(lp, rp) && eq_expr(li, ri) && eq_block(lt, rt) && lk == rk, - (Loop(lt, ll, _), Loop(rt, rl, _)) => eq_label(ll.as_ref(), rl.as_ref()) && eq_block(lt, rt), - (Block(lb, ll), Block(rb, rl)) => eq_label(ll.as_ref(), rl.as_ref()) && eq_block(lb, rb), - (TryBlock(l), TryBlock(r)) => eq_block(l, r), - (Yield(l), Yield(r)) | (Ret(l), Ret(r)) => eq_expr_opt(l.as_ref(), r.as_ref()), - (Break(ll, le), Break(rl, re)) => eq_label(ll.as_ref(), rl.as_ref()) && eq_expr_opt(le.as_ref(), re.as_ref()), - (Continue(ll), Continue(rl)) => eq_label(ll.as_ref(), rl.as_ref()), - (Assign(l1, l2, _), Assign(r1, r2, _)) | (Index(l1, l2, _), Index(r1, r2, _)) => { - eq_expr(l1, r1) && eq_expr(l2, r2) - }, - (AssignOp(lo, lp, lv), AssignOp(ro, rp, rv)) => lo.node == ro.node && eq_expr(lp, rp) && eq_expr(lv, rv), - (Field(lp, lf), Field(rp, rf)) => eq_id(*lf, *rf) && eq_expr(lp, rp), - (Match(ls, la, lkind), Match(rs, ra, rkind)) => (lkind == rkind) && eq_expr(ls, rs) && over(la, ra, eq_arm), - ( - Closure(box ast::Closure { - binder: lb, - capture_clause: lc, - coroutine_kind: la, - movability: lm, - fn_decl: lf, - body: le, - .. - }), - Closure(box ast::Closure { - binder: rb, - capture_clause: rc, - coroutine_kind: ra, - movability: rm, - fn_decl: rf, - body: re, - .. - }), - ) => { - eq_closure_binder(lb, rb) - && lc == rc - && eq_coroutine_kind(*la, *ra) - && lm == rm - && eq_fn_decl(lf, rf) - && eq_expr(le, re) - }, - (Gen(lc, lb, lk, _), Gen(rc, rb, rk, _)) => lc == rc && eq_block(lb, rb) && lk == rk, - (Range(lf, lt, ll), Range(rf, rt, rl)) => { - ll == rl && eq_expr_opt(lf.as_ref(), rf.as_ref()) && eq_expr_opt(lt.as_ref(), rt.as_ref()) - }, - (AddrOf(lbk, lm, le), AddrOf(rbk, rm, re)) => lbk == rbk && lm == rm && eq_expr(le, re), - (Path(lq, lp), Path(rq, rp)) => both(lq.as_ref(), rq.as_ref(), eq_qself) && eq_path(lp, rp), - (MacCall(l), MacCall(r)) => eq_mac_call(l, r), - (Struct(lse), Struct(rse)) => { - eq_maybe_qself(lse.qself.as_ref(), rse.qself.as_ref()) - && eq_path(&lse.path, &rse.path) - && eq_struct_rest(&lse.rest, &rse.rest) - && unordered_over(&lse.fields, &rse.fields, eq_field) - }, - _ => false, - } -} - -fn eq_coroutine_kind(a: Option, b: Option) -> bool { - matches!( - (a, b), - (Some(CoroutineKind::Async { .. }), Some(CoroutineKind::Async { .. })) - | (Some(CoroutineKind::Gen { .. }), Some(CoroutineKind::Gen { .. })) - | ( - Some(CoroutineKind::AsyncGen { .. }), - Some(CoroutineKind::AsyncGen { .. }) - ) - | (None, None) - ) -} - -pub fn eq_field(l: &ExprField, r: &ExprField) -> bool { - l.is_placeholder == r.is_placeholder - && eq_id(l.ident, r.ident) - && eq_expr(&l.expr, &r.expr) - && over(&l.attrs, &r.attrs, eq_attr) -} - -pub fn eq_arm(l: &Arm, r: &Arm) -> bool { - l.is_placeholder == r.is_placeholder - && eq_pat(&l.pat, &r.pat) - && eq_expr_opt(l.body.as_ref(), r.body.as_ref()) - && eq_expr_opt(l.guard.as_ref(), r.guard.as_ref()) - && over(&l.attrs, &r.attrs, eq_attr) -} - -pub fn eq_label(l: Option<&Label>, r: Option<&Label>) -> bool { - both(l, r, |l, r| eq_id(l.ident, r.ident)) -} - -pub fn eq_block(l: &Block, r: &Block) -> bool { - l.rules == r.rules && over(&l.stmts, &r.stmts, eq_stmt) -} - -pub fn eq_stmt(l: &Stmt, r: &Stmt) -> bool { - use StmtKind::*; - match (&l.kind, &r.kind) { - (Let(l), Let(r)) => { - eq_pat(&l.pat, &r.pat) - && both(l.ty.as_ref(), r.ty.as_ref(), |l, r| eq_ty(l, r)) - && eq_local_kind(&l.kind, &r.kind) - && over(&l.attrs, &r.attrs, eq_attr) - }, - (Item(l), Item(r)) => eq_item(l, r, eq_item_kind), - (Expr(l), Expr(r)) | (Semi(l), Semi(r)) => eq_expr(l, r), - (Empty, Empty) => true, - (MacCall(l), MacCall(r)) => { - l.style == r.style && eq_mac_call(&l.mac, &r.mac) && over(&l.attrs, &r.attrs, eq_attr) - }, - _ => false, - } -} - -pub fn eq_local_kind(l: &LocalKind, r: &LocalKind) -> bool { - use LocalKind::*; - match (l, r) { - (Decl, Decl) => true, - (Init(l), Init(r)) => eq_expr(l, r), - (InitElse(li, le), InitElse(ri, re)) => eq_expr(li, ri) && eq_block(le, re), - _ => false, - } -} - -pub fn eq_item(l: &Item, r: &Item, mut eq_kind: impl FnMut(&K, &K) -> bool) -> bool { - eq_id(l.ident, r.ident) && over(&l.attrs, &r.attrs, eq_attr) && eq_vis(&l.vis, &r.vis) && eq_kind(&l.kind, &r.kind) -} - -#[expect(clippy::similar_names, clippy::too_many_lines)] // Just a big match statement -pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { - use ItemKind::*; - match (l, r) { - (ExternCrate(l), ExternCrate(r)) => l == r, - (Use(l), Use(r)) => eq_use_tree(l, r), - ( - Static(box StaticItem { - ty: lt, - mutability: lm, - expr: le, - safety: ls, - }), - Static(box StaticItem { - ty: rt, - mutability: rm, - expr: re, - safety: rs, - }), - ) => lm == rm && ls == rs && eq_ty(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()), - ( - Const(box ConstItem { - defaultness: ld, - generics: lg, - ty: lt, - expr: le, - }), - Const(box ConstItem { - defaultness: rd, - generics: rg, - ty: rt, - expr: re, - }), - ) => eq_defaultness(*ld, *rd) && eq_generics(lg, rg) && eq_ty(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()), - ( - Fn(box ast::Fn { - defaultness: ld, - sig: lf, - generics: lg, - body: lb, - }), - Fn(box ast::Fn { - defaultness: rd, - sig: rf, - generics: rg, - body: rb, - }), - ) => { - eq_defaultness(*ld, *rd) - && eq_fn_sig(lf, rf) - && eq_generics(lg, rg) - && both(lb.as_ref(), rb.as_ref(), |l, r| eq_block(l, r)) - }, - (Mod(lu, lmk), Mod(ru, rmk)) => { - lu == ru - && match (lmk, rmk) { - (ModKind::Loaded(litems, linline, _), ModKind::Loaded(ritems, rinline, _)) => { - linline == rinline && over(litems, ritems, |l, r| eq_item(l, r, eq_item_kind)) - }, - (ModKind::Unloaded, ModKind::Unloaded) => true, - _ => false, - } - }, - (ForeignMod(l), ForeignMod(r)) => { - both(l.abi.as_ref(), r.abi.as_ref(), eq_str_lit) - && over(&l.items, &r.items, |l, r| eq_item(l, r, eq_foreign_item_kind)) - }, - ( - TyAlias(box ast::TyAlias { - defaultness: ld, - generics: lg, - bounds: lb, - ty: lt, - .. - }), - TyAlias(box ast::TyAlias { - defaultness: rd, - generics: rg, - bounds: rb, - ty: rt, - .. - }), - ) => { - eq_defaultness(*ld, *rd) - && eq_generics(lg, rg) - && over(lb, rb, eq_generic_bound) - && both(lt.as_ref(), rt.as_ref(), |l, r| eq_ty(l, r)) - }, - (Enum(le, lg), Enum(re, rg)) => over(&le.variants, &re.variants, eq_variant) && eq_generics(lg, rg), - (Struct(lv, lg), Struct(rv, rg)) | (Union(lv, lg), Union(rv, rg)) => { - eq_variant_data(lv, rv) && eq_generics(lg, rg) - }, - ( - Trait(box ast::Trait { - is_auto: la, - safety: lu, - generics: lg, - bounds: lb, - items: li, - }), - Trait(box ast::Trait { - is_auto: ra, - safety: ru, - generics: rg, - bounds: rb, - items: ri, - }), - ) => { - la == ra - && matches!(lu, Safety::Default) == matches!(ru, Safety::Default) - && eq_generics(lg, rg) - && over(lb, rb, eq_generic_bound) - && over(li, ri, |l, r| eq_item(l, r, eq_assoc_item_kind)) - }, - (TraitAlias(lg, lb), TraitAlias(rg, rb)) => eq_generics(lg, rg) && over(lb, rb, eq_generic_bound), - ( - Impl(box ast::Impl { - safety: lu, - polarity: lp, - defaultness: ld, - constness: lc, - generics: lg, - of_trait: lot, - self_ty: lst, - items: li, - }), - Impl(box ast::Impl { - safety: ru, - polarity: rp, - defaultness: rd, - constness: rc, - generics: rg, - of_trait: rot, - self_ty: rst, - items: ri, - }), - ) => { - matches!(lu, Safety::Default) == matches!(ru, Safety::Default) - && matches!(lp, ImplPolarity::Positive) == matches!(rp, ImplPolarity::Positive) - && eq_defaultness(*ld, *rd) - && matches!(lc, ast::Const::No) == matches!(rc, ast::Const::No) - && eq_generics(lg, rg) - && both(lot.as_ref(), rot.as_ref(), |l, r| eq_path(&l.path, &r.path)) - && eq_ty(lst, rst) - && over(li, ri, |l, r| eq_item(l, r, eq_assoc_item_kind)) - }, - (MacCall(l), MacCall(r)) => eq_mac_call(l, r), - (MacroDef(l), MacroDef(r)) => l.macro_rules == r.macro_rules && eq_delim_args(&l.body, &r.body), - _ => false, - } -} - -pub fn eq_foreign_item_kind(l: &ForeignItemKind, r: &ForeignItemKind) -> bool { - use ForeignItemKind::*; - match (l, r) { - ( - Static(box StaticItem { - ty: lt, - mutability: lm, - expr: le, - safety: ls, - }), - Static(box StaticItem { - ty: rt, - mutability: rm, - expr: re, - safety: rs, - }), - ) => lm == rm && eq_ty(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()) && ls == rs, - ( - Fn(box ast::Fn { - defaultness: ld, - sig: lf, - generics: lg, - body: lb, - }), - Fn(box ast::Fn { - defaultness: rd, - sig: rf, - generics: rg, - body: rb, - }), - ) => { - eq_defaultness(*ld, *rd) - && eq_fn_sig(lf, rf) - && eq_generics(lg, rg) - && both(lb.as_ref(), rb.as_ref(), |l, r| eq_block(l, r)) - }, - ( - TyAlias(box ast::TyAlias { - defaultness: ld, - generics: lg, - bounds: lb, - ty: lt, - .. - }), - TyAlias(box ast::TyAlias { - defaultness: rd, - generics: rg, - bounds: rb, - ty: rt, - .. - }), - ) => { - eq_defaultness(*ld, *rd) - && eq_generics(lg, rg) - && over(lb, rb, eq_generic_bound) - && both(lt.as_ref(), rt.as_ref(), |l, r| eq_ty(l, r)) - }, - (MacCall(l), MacCall(r)) => eq_mac_call(l, r), - _ => false, - } -} - -pub fn eq_assoc_item_kind(l: &AssocItemKind, r: &AssocItemKind) -> bool { - use AssocItemKind::*; - match (l, r) { - ( - Const(box ConstItem { - defaultness: ld, - generics: lg, - ty: lt, - expr: le, - }), - Const(box ConstItem { - defaultness: rd, - generics: rg, - ty: rt, - expr: re, - }), - ) => eq_defaultness(*ld, *rd) && eq_generics(lg, rg) && eq_ty(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()), - ( - Fn(box ast::Fn { - defaultness: ld, - sig: lf, - generics: lg, - body: lb, - }), - Fn(box ast::Fn { - defaultness: rd, - sig: rf, - generics: rg, - body: rb, - }), - ) => { - eq_defaultness(*ld, *rd) - && eq_fn_sig(lf, rf) - && eq_generics(lg, rg) - && both(lb.as_ref(), rb.as_ref(), |l, r| eq_block(l, r)) - }, - ( - Type(box TyAlias { - defaultness: ld, - generics: lg, - bounds: lb, - ty: lt, - .. - }), - Type(box TyAlias { - defaultness: rd, - generics: rg, - bounds: rb, - ty: rt, - .. - }), - ) => { - eq_defaultness(*ld, *rd) - && eq_generics(lg, rg) - && over(lb, rb, eq_generic_bound) - && both(lt.as_ref(), rt.as_ref(), |l, r| eq_ty(l, r)) - }, - (MacCall(l), MacCall(r)) => eq_mac_call(l, r), - _ => false, - } -} - -pub fn eq_variant(l: &Variant, r: &Variant) -> bool { - l.is_placeholder == r.is_placeholder - && over(&l.attrs, &r.attrs, eq_attr) - && eq_vis(&l.vis, &r.vis) - && eq_id(l.ident, r.ident) - && eq_variant_data(&l.data, &r.data) - && both(l.disr_expr.as_ref(), r.disr_expr.as_ref(), |l, r| { - eq_expr(&l.value, &r.value) - }) -} - -pub fn eq_variant_data(l: &VariantData, r: &VariantData) -> bool { - use VariantData::*; - match (l, r) { - (Unit(_), Unit(_)) => true, - (Struct { fields: l, .. }, Struct { fields: r, .. }) | (Tuple(l, _), Tuple(r, _)) => { - over(l, r, eq_struct_field) - }, - _ => false, - } -} - -pub fn eq_struct_field(l: &FieldDef, r: &FieldDef) -> bool { - l.is_placeholder == r.is_placeholder - && over(&l.attrs, &r.attrs, eq_attr) - && eq_vis(&l.vis, &r.vis) - && both(l.ident.as_ref(), r.ident.as_ref(), |l, r| eq_id(*l, *r)) - && eq_ty(&l.ty, &r.ty) -} - -pub fn eq_fn_sig(l: &FnSig, r: &FnSig) -> bool { - eq_fn_decl(&l.decl, &r.decl) && eq_fn_header(&l.header, &r.header) -} - -fn eq_opt_coroutine_kind(l: Option, r: Option) -> bool { - matches!( - (l, r), - (Some(CoroutineKind::Async { .. }), Some(CoroutineKind::Async { .. })) - | (Some(CoroutineKind::Gen { .. }), Some(CoroutineKind::Gen { .. })) - | ( - Some(CoroutineKind::AsyncGen { .. }), - Some(CoroutineKind::AsyncGen { .. }) - ) - | (None, None) - ) -} - -pub fn eq_fn_header(l: &FnHeader, r: &FnHeader) -> bool { - matches!(l.safety, Safety::Default) == matches!(r.safety, Safety::Default) - && eq_opt_coroutine_kind(l.coroutine_kind, r.coroutine_kind) - && matches!(l.constness, Const::No) == matches!(r.constness, Const::No) - && eq_ext(&l.ext, &r.ext) -} - -pub fn eq_generics(l: &Generics, r: &Generics) -> bool { - over(&l.params, &r.params, eq_generic_param) - && over(&l.where_clause.predicates, &r.where_clause.predicates, |l, r| { - eq_where_predicate(l, r) - }) -} - -pub fn eq_where_predicate(l: &WherePredicate, r: &WherePredicate) -> bool { - use WherePredicateKind::*; - match (&l.kind, &r.kind) { - (BoundPredicate(l), BoundPredicate(r)) => { - over(&l.bound_generic_params, &r.bound_generic_params, |l, r| { - eq_generic_param(l, r) - }) && eq_ty(&l.bounded_ty, &r.bounded_ty) - && over(&l.bounds, &r.bounds, eq_generic_bound) - }, - (RegionPredicate(l), RegionPredicate(r)) => { - eq_id(l.lifetime.ident, r.lifetime.ident) && over(&l.bounds, &r.bounds, eq_generic_bound) - }, - (EqPredicate(l), EqPredicate(r)) => eq_ty(&l.lhs_ty, &r.lhs_ty) && eq_ty(&l.rhs_ty, &r.rhs_ty), - _ => false, - } -} - -pub fn eq_use_tree(l: &UseTree, r: &UseTree) -> bool { - eq_path(&l.prefix, &r.prefix) && eq_use_tree_kind(&l.kind, &r.kind) -} - -pub fn eq_anon_const(l: &AnonConst, r: &AnonConst) -> bool { - eq_expr(&l.value, &r.value) -} - -pub fn eq_use_tree_kind(l: &UseTreeKind, r: &UseTreeKind) -> bool { - use UseTreeKind::*; - match (l, r) { - (Glob, Glob) => true, - (Simple(l), Simple(r)) => both(l.as_ref(), r.as_ref(), |l, r| eq_id(*l, *r)), - (Nested { items: l, .. }, Nested { items: r, .. }) => over(l, r, |(l, _), (r, _)| eq_use_tree(l, r)), - _ => false, - } -} - -pub fn eq_defaultness(l: Defaultness, r: Defaultness) -> bool { - matches!( - (l, r), - (Defaultness::Final, Defaultness::Final) | (Defaultness::Default(_), Defaultness::Default(_)) - ) -} - -pub fn eq_vis(l: &Visibility, r: &Visibility) -> bool { - use VisibilityKind::*; - match (&l.kind, &r.kind) { - (Public, Public) | (Inherited, Inherited) => true, - (Restricted { path: l, .. }, Restricted { path: r, .. }) => eq_path(l, r), - _ => false, - } -} - -pub fn eq_fn_decl(l: &FnDecl, r: &FnDecl) -> bool { - eq_fn_ret_ty(&l.output, &r.output) - && over(&l.inputs, &r.inputs, |l, r| { - l.is_placeholder == r.is_placeholder - && eq_pat(&l.pat, &r.pat) - && eq_ty(&l.ty, &r.ty) - && over(&l.attrs, &r.attrs, eq_attr) - }) -} - -pub fn eq_closure_binder(l: &ClosureBinder, r: &ClosureBinder) -> bool { - match (l, r) { - (ClosureBinder::NotPresent, ClosureBinder::NotPresent) => true, - (ClosureBinder::For { generic_params: lp, .. }, ClosureBinder::For { generic_params: rp, .. }) => { - lp.len() == rp.len() && std::iter::zip(lp.iter(), rp.iter()).all(|(l, r)| eq_generic_param(l, r)) - }, - _ => false, - } -} - -pub fn eq_fn_ret_ty(l: &FnRetTy, r: &FnRetTy) -> bool { - match (l, r) { - (FnRetTy::Default(_), FnRetTy::Default(_)) => true, - (FnRetTy::Ty(l), FnRetTy::Ty(r)) => eq_ty(l, r), - _ => false, - } -} - -pub fn eq_ty(l: &Ty, r: &Ty) -> bool { - use TyKind::*; - match (&l.kind, &r.kind) { - (Paren(l), _) => eq_ty(l, r), - (_, Paren(r)) => eq_ty(l, r), - (Never, Never) | (Infer, Infer) | (ImplicitSelf, ImplicitSelf) | (Err(_), Err(_)) | (CVarArgs, CVarArgs) => { - true - }, - (Slice(l), Slice(r)) => eq_ty(l, r), - (Array(le, ls), Array(re, rs)) => eq_ty(le, re) && eq_expr(&ls.value, &rs.value), - (Ptr(l), Ptr(r)) => l.mutbl == r.mutbl && eq_ty(&l.ty, &r.ty), - (Ref(ll, l), Ref(rl, r)) => { - both(ll.as_ref(), rl.as_ref(), |l, r| eq_id(l.ident, r.ident)) && l.mutbl == r.mutbl && eq_ty(&l.ty, &r.ty) - }, - (PinnedRef(ll, l), PinnedRef(rl, r)) => { - both(ll.as_ref(), rl.as_ref(), |l, r| eq_id(l.ident, r.ident)) && l.mutbl == r.mutbl && eq_ty(&l.ty, &r.ty) - }, - (BareFn(l), BareFn(r)) => { - l.safety == r.safety - && eq_ext(&l.ext, &r.ext) - && over(&l.generic_params, &r.generic_params, eq_generic_param) - && eq_fn_decl(&l.decl, &r.decl) - }, - (Tup(l), Tup(r)) => over(l, r, |l, r| eq_ty(l, r)), - (Path(lq, lp), Path(rq, rp)) => both(lq.as_ref(), rq.as_ref(), eq_qself) && eq_path(lp, rp), - (TraitObject(lg, ls), TraitObject(rg, rs)) => ls == rs && over(lg, rg, eq_generic_bound), - (ImplTrait(_, lg), ImplTrait(_, rg)) => over(lg, rg, eq_generic_bound), - (Typeof(l), Typeof(r)) => eq_expr(&l.value, &r.value), - (MacCall(l), MacCall(r)) => eq_mac_call(l, r), - _ => false, - } -} - -pub fn eq_ext(l: &Extern, r: &Extern) -> bool { - use Extern::*; - match (l, r) { - (None, None) | (Implicit(_), Implicit(_)) => true, - (Explicit(l, _), Explicit(r, _)) => eq_str_lit(l, r), - _ => false, - } -} - -pub fn eq_str_lit(l: &StrLit, r: &StrLit) -> bool { - l.style == r.style && l.symbol == r.symbol && l.suffix == r.suffix -} - -pub fn eq_poly_ref_trait(l: &PolyTraitRef, r: &PolyTraitRef) -> bool { - l.modifiers == r.modifiers - && eq_path(&l.trait_ref.path, &r.trait_ref.path) - && over(&l.bound_generic_params, &r.bound_generic_params, |l, r| { - eq_generic_param(l, r) - }) -} - -pub fn eq_generic_param(l: &GenericParam, r: &GenericParam) -> bool { - use GenericParamKind::*; - l.is_placeholder == r.is_placeholder - && eq_id(l.ident, r.ident) - && over(&l.bounds, &r.bounds, eq_generic_bound) - && match (&l.kind, &r.kind) { - (Lifetime, Lifetime) => true, - (Type { default: l }, Type { default: r }) => both(l.as_ref(), r.as_ref(), |l, r| eq_ty(l, r)), - ( - Const { - ty: lt, - kw_span: _, - default: ld, - }, - Const { - ty: rt, - kw_span: _, - default: rd, - }, - ) => eq_ty(lt, rt) && both(ld.as_ref(), rd.as_ref(), eq_anon_const), - _ => false, - } - && over(&l.attrs, &r.attrs, eq_attr) -} - -pub fn eq_generic_bound(l: &GenericBound, r: &GenericBound) -> bool { - use GenericBound::*; - match (l, r) { - (Trait(ptr1), Trait(ptr2)) => eq_poly_ref_trait(ptr1, ptr2), - (Outlives(l), Outlives(r)) => eq_id(l.ident, r.ident), - _ => false, - } -} - -pub fn eq_precise_capture(l: &PreciseCapturingArg, r: &PreciseCapturingArg) -> bool { - match (l, r) { - (PreciseCapturingArg::Lifetime(l), PreciseCapturingArg::Lifetime(r)) => l.ident == r.ident, - (PreciseCapturingArg::Arg(l, _), PreciseCapturingArg::Arg(r, _)) => l.segments[0].ident == r.segments[0].ident, - _ => false, - } -} - -fn eq_term(l: &Term, r: &Term) -> bool { - match (l, r) { - (Term::Ty(l), Term::Ty(r)) => eq_ty(l, r), - (Term::Const(l), Term::Const(r)) => eq_anon_const(l, r), - _ => false, - } -} - -pub fn eq_assoc_item_constraint(l: &AssocItemConstraint, r: &AssocItemConstraint) -> bool { - use AssocItemConstraintKind::*; - eq_id(l.ident, r.ident) - && match (&l.kind, &r.kind) { - (Equality { term: l }, Equality { term: r }) => eq_term(l, r), - (Bound { bounds: l }, Bound { bounds: r }) => over(l, r, eq_generic_bound), - _ => false, - } -} - -pub fn eq_mac_call(l: &MacCall, r: &MacCall) -> bool { - eq_path(&l.path, &r.path) && eq_delim_args(&l.args, &r.args) -} - -pub fn eq_attr(l: &Attribute, r: &Attribute) -> bool { - use AttrKind::*; - l.style == r.style - && match (&l.kind, &r.kind) { - (DocComment(l1, l2), DocComment(r1, r2)) => l1 == r1 && l2 == r2, - (Normal(l), Normal(r)) => eq_path(&l.item.path, &r.item.path) && eq_attr_args(&l.item.args, &r.item.args), - _ => false, - } -} - -pub fn eq_attr_args(l: &AttrArgs, r: &AttrArgs) -> bool { - use AttrArgs::*; - match (l, r) { - (Empty, Empty) => true, - (Delimited(la), Delimited(ra)) => eq_delim_args(la, ra), - (Eq(_, AttrArgsEq::Ast(le)), Eq(_, AttrArgsEq::Ast(re))) => eq_expr(le, re), - (Eq(_, AttrArgsEq::Hir(ll)), Eq(_, AttrArgsEq::Hir(rl))) => ll.kind == rl.kind, - _ => false, - } -} - -pub fn eq_delim_args(l: &DelimArgs, r: &DelimArgs) -> bool { - l.delim == r.delim && l.tokens.eq_unspanned(&r.tokens) -} diff --git a/clippy_utils/src/ast_utils/mod.rs b/clippy_utils/src/ast_utils/mod.rs new file mode 100644 index 00000000000..c90f4a6ebfe --- /dev/null +++ b/clippy_utils/src/ast_utils/mod.rs @@ -0,0 +1,883 @@ +//! Utilities for manipulating and extracting information from `rustc_ast::ast`. +//! +//! - The `eq_foobar` functions test for semantic equality but ignores `NodeId`s and `Span`s. + +#![allow(clippy::wildcard_imports, clippy::enum_glob_use)] + +use crate::{both, over}; +use rustc_ast::ptr::P; +use rustc_ast::{self as ast, *}; +use rustc_span::symbol::Ident; +use std::mem; + +pub mod ident_iter; +pub use ident_iter::IdentIter; + +pub fn is_useless_with_eq_exprs(kind: BinOpKind) -> bool { + use BinOpKind::*; + matches!( + kind, + Sub | Div | Eq | Lt | Le | Gt | Ge | Ne | And | Or | BitXor | BitAnd | BitOr + ) +} + +/// Checks if each element in the first slice is contained within the latter as per `eq_fn`. +pub fn unordered_over(left: &[X], right: &[X], mut eq_fn: impl FnMut(&X, &X) -> bool) -> bool { + left.len() == right.len() && left.iter().all(|l| right.iter().any(|r| eq_fn(l, r))) +} + +pub fn eq_id(l: Ident, r: Ident) -> bool { + l.name == r.name +} + +pub fn eq_pat(l: &Pat, r: &Pat) -> bool { + use PatKind::*; + match (&l.kind, &r.kind) { + (Paren(l), _) => eq_pat(l, r), + (_, Paren(r)) => eq_pat(l, r), + (Wild, Wild) | (Rest, Rest) => true, + (Lit(l), Lit(r)) => eq_expr(l, r), + (Ident(b1, i1, s1), Ident(b2, i2, s2)) => { + b1 == b2 && eq_id(*i1, *i2) && both(s1.as_deref(), s2.as_deref(), eq_pat) + }, + (Range(lf, lt, le), Range(rf, rt, re)) => { + eq_expr_opt(lf.as_ref(), rf.as_ref()) + && eq_expr_opt(lt.as_ref(), rt.as_ref()) + && eq_range_end(&le.node, &re.node) + }, + (Box(l), Box(r)) + | (Ref(l, Mutability::Not), Ref(r, Mutability::Not)) + | (Ref(l, Mutability::Mut), Ref(r, Mutability::Mut)) => eq_pat(l, r), + (Tuple(l), Tuple(r)) | (Slice(l), Slice(r)) => over(l, r, |l, r| eq_pat(l, r)), + (Path(lq, lp), Path(rq, rp)) => both(lq.as_ref(), rq.as_ref(), eq_qself) && eq_path(lp, rp), + (TupleStruct(lqself, lp, lfs), TupleStruct(rqself, rp, rfs)) => { + eq_maybe_qself(lqself.as_ref(), rqself.as_ref()) && eq_path(lp, rp) && over(lfs, rfs, |l, r| eq_pat(l, r)) + }, + (Struct(lqself, lp, lfs, lr), Struct(rqself, rp, rfs, rr)) => { + lr == rr + && eq_maybe_qself(lqself.as_ref(), rqself.as_ref()) + && eq_path(lp, rp) + && unordered_over(lfs, rfs, eq_field_pat) + }, + (Or(ls), Or(rs)) => unordered_over(ls, rs, |l, r| eq_pat(l, r)), + (MacCall(l), MacCall(r)) => eq_mac_call(l, r), + _ => false, + } +} + +pub fn eq_range_end(l: &RangeEnd, r: &RangeEnd) -> bool { + match (l, r) { + (RangeEnd::Excluded, RangeEnd::Excluded) => true, + (RangeEnd::Included(l), RangeEnd::Included(r)) => { + matches!(l, RangeSyntax::DotDotEq) == matches!(r, RangeSyntax::DotDotEq) + }, + _ => false, + } +} + +pub fn eq_field_pat(l: &PatField, r: &PatField) -> bool { + l.is_placeholder == r.is_placeholder + && eq_id(l.ident, r.ident) + && eq_pat(&l.pat, &r.pat) + && over(&l.attrs, &r.attrs, eq_attr) +} + +pub fn eq_qself(l: &P, r: &P) -> bool { + l.position == r.position && eq_ty(&l.ty, &r.ty) +} + +pub fn eq_maybe_qself(l: Option<&P>, r: Option<&P>) -> bool { + match (l, r) { + (Some(l), Some(r)) => eq_qself(l, r), + (None, None) => true, + _ => false, + } +} + +pub fn eq_path(l: &Path, r: &Path) -> bool { + over(&l.segments, &r.segments, eq_path_seg) +} + +pub fn eq_path_seg(l: &PathSegment, r: &PathSegment) -> bool { + eq_id(l.ident, r.ident) && both(l.args.as_ref(), r.args.as_ref(), |l, r| eq_generic_args(l, r)) +} + +pub fn eq_generic_args(l: &GenericArgs, r: &GenericArgs) -> bool { + match (l, r) { + (AngleBracketed(l), AngleBracketed(r)) => over(&l.args, &r.args, eq_angle_arg), + (Parenthesized(l), Parenthesized(r)) => { + over(&l.inputs, &r.inputs, |l, r| eq_ty(l, r)) && eq_fn_ret_ty(&l.output, &r.output) + }, + _ => false, + } +} + +pub fn eq_angle_arg(l: &AngleBracketedArg, r: &AngleBracketedArg) -> bool { + match (l, r) { + (AngleBracketedArg::Arg(l), AngleBracketedArg::Arg(r)) => eq_generic_arg(l, r), + (AngleBracketedArg::Constraint(l), AngleBracketedArg::Constraint(r)) => eq_assoc_item_constraint(l, r), + _ => false, + } +} + +pub fn eq_generic_arg(l: &GenericArg, r: &GenericArg) -> bool { + match (l, r) { + (GenericArg::Lifetime(l), GenericArg::Lifetime(r)) => eq_id(l.ident, r.ident), + (GenericArg::Type(l), GenericArg::Type(r)) => eq_ty(l, r), + (GenericArg::Const(l), GenericArg::Const(r)) => eq_expr(&l.value, &r.value), + _ => false, + } +} + +pub fn eq_expr_opt(l: Option<&P>, r: Option<&P>) -> bool { + both(l, r, |l, r| eq_expr(l, r)) +} + +pub fn eq_struct_rest(l: &StructRest, r: &StructRest) -> bool { + match (l, r) { + (StructRest::Base(lb), StructRest::Base(rb)) => eq_expr(lb, rb), + (StructRest::Rest(_), StructRest::Rest(_)) | (StructRest::None, StructRest::None) => true, + _ => false, + } +} + +#[allow(clippy::too_many_lines)] // Just a big match statement +pub fn eq_expr(l: &Expr, r: &Expr) -> bool { + use ExprKind::*; + if !over(&l.attrs, &r.attrs, eq_attr) { + return false; + } + match (&l.kind, &r.kind) { + (Paren(l), _) => eq_expr(l, r), + (_, Paren(r)) => eq_expr(l, r), + (Err(_), Err(_)) => true, + (Dummy, _) | (_, Dummy) => unreachable!("comparing `ExprKind::Dummy`"), + (Try(l), Try(r)) | (Await(l, _), Await(r, _)) => eq_expr(l, r), + (Array(l), Array(r)) => over(l, r, |l, r| eq_expr(l, r)), + (Tup(l), Tup(r)) => over(l, r, |l, r| eq_expr(l, r)), + (Repeat(le, ls), Repeat(re, rs)) => eq_expr(le, re) && eq_expr(&ls.value, &rs.value), + (Call(lc, la), Call(rc, ra)) => eq_expr(lc, rc) && over(la, ra, |l, r| eq_expr(l, r)), + ( + MethodCall(box ast::MethodCall { + seg: ls, + receiver: lr, + args: la, + .. + }), + MethodCall(box ast::MethodCall { + seg: rs, + receiver: rr, + args: ra, + .. + }), + ) => eq_path_seg(ls, rs) && eq_expr(lr, rr) && over(la, ra, |l, r| eq_expr(l, r)), + (Binary(lo, ll, lr), Binary(ro, rl, rr)) => lo.node == ro.node && eq_expr(ll, rl) && eq_expr(lr, rr), + (Unary(lo, l), Unary(ro, r)) => mem::discriminant(lo) == mem::discriminant(ro) && eq_expr(l, r), + (Lit(l), Lit(r)) => l == r, + (Cast(l, lt), Cast(r, rt)) | (Type(l, lt), Type(r, rt)) => eq_expr(l, r) && eq_ty(lt, rt), + (Let(lp, le, _, _), Let(rp, re, _, _)) => eq_pat(lp, rp) && eq_expr(le, re), + (If(lc, lt, le), If(rc, rt, re)) => { + eq_expr(lc, rc) && eq_block(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()) + }, + (While(lc, lt, ll), While(rc, rt, rl)) => { + eq_label(ll.as_ref(), rl.as_ref()) && eq_expr(lc, rc) && eq_block(lt, rt) + }, + ( + ForLoop { + pat: lp, + iter: li, + body: lt, + label: ll, + kind: lk, + }, + ForLoop { + pat: rp, + iter: ri, + body: rt, + label: rl, + kind: rk, + }, + ) => eq_label(ll.as_ref(), rl.as_ref()) && eq_pat(lp, rp) && eq_expr(li, ri) && eq_block(lt, rt) && lk == rk, + (Loop(lt, ll, _), Loop(rt, rl, _)) => eq_label(ll.as_ref(), rl.as_ref()) && eq_block(lt, rt), + (Block(lb, ll), Block(rb, rl)) => eq_label(ll.as_ref(), rl.as_ref()) && eq_block(lb, rb), + (TryBlock(l), TryBlock(r)) => eq_block(l, r), + (Yield(l), Yield(r)) | (Ret(l), Ret(r)) => eq_expr_opt(l.as_ref(), r.as_ref()), + (Break(ll, le), Break(rl, re)) => eq_label(ll.as_ref(), rl.as_ref()) && eq_expr_opt(le.as_ref(), re.as_ref()), + (Continue(ll), Continue(rl)) => eq_label(ll.as_ref(), rl.as_ref()), + (Assign(l1, l2, _), Assign(r1, r2, _)) | (Index(l1, l2, _), Index(r1, r2, _)) => { + eq_expr(l1, r1) && eq_expr(l2, r2) + }, + (AssignOp(lo, lp, lv), AssignOp(ro, rp, rv)) => lo.node == ro.node && eq_expr(lp, rp) && eq_expr(lv, rv), + (Field(lp, lf), Field(rp, rf)) => eq_id(*lf, *rf) && eq_expr(lp, rp), + (Match(ls, la, lkind), Match(rs, ra, rkind)) => (lkind == rkind) && eq_expr(ls, rs) && over(la, ra, eq_arm), + ( + Closure(box ast::Closure { + binder: lb, + capture_clause: lc, + coroutine_kind: la, + movability: lm, + fn_decl: lf, + body: le, + .. + }), + Closure(box ast::Closure { + binder: rb, + capture_clause: rc, + coroutine_kind: ra, + movability: rm, + fn_decl: rf, + body: re, + .. + }), + ) => { + eq_closure_binder(lb, rb) + && lc == rc + && eq_coroutine_kind(*la, *ra) + && lm == rm + && eq_fn_decl(lf, rf) + && eq_expr(le, re) + }, + (Gen(lc, lb, lk, _), Gen(rc, rb, rk, _)) => lc == rc && eq_block(lb, rb) && lk == rk, + (Range(lf, lt, ll), Range(rf, rt, rl)) => { + ll == rl && eq_expr_opt(lf.as_ref(), rf.as_ref()) && eq_expr_opt(lt.as_ref(), rt.as_ref()) + }, + (AddrOf(lbk, lm, le), AddrOf(rbk, rm, re)) => lbk == rbk && lm == rm && eq_expr(le, re), + (Path(lq, lp), Path(rq, rp)) => both(lq.as_ref(), rq.as_ref(), eq_qself) && eq_path(lp, rp), + (MacCall(l), MacCall(r)) => eq_mac_call(l, r), + (Struct(lse), Struct(rse)) => { + eq_maybe_qself(lse.qself.as_ref(), rse.qself.as_ref()) + && eq_path(&lse.path, &rse.path) + && eq_struct_rest(&lse.rest, &rse.rest) + && unordered_over(&lse.fields, &rse.fields, eq_field) + }, + _ => false, + } +} + +fn eq_coroutine_kind(a: Option, b: Option) -> bool { + matches!( + (a, b), + (Some(CoroutineKind::Async { .. }), Some(CoroutineKind::Async { .. })) + | (Some(CoroutineKind::Gen { .. }), Some(CoroutineKind::Gen { .. })) + | ( + Some(CoroutineKind::AsyncGen { .. }), + Some(CoroutineKind::AsyncGen { .. }) + ) + | (None, None) + ) +} + +pub fn eq_field(l: &ExprField, r: &ExprField) -> bool { + l.is_placeholder == r.is_placeholder + && eq_id(l.ident, r.ident) + && eq_expr(&l.expr, &r.expr) + && over(&l.attrs, &r.attrs, eq_attr) +} + +pub fn eq_arm(l: &Arm, r: &Arm) -> bool { + l.is_placeholder == r.is_placeholder + && eq_pat(&l.pat, &r.pat) + && eq_expr_opt(l.body.as_ref(), r.body.as_ref()) + && eq_expr_opt(l.guard.as_ref(), r.guard.as_ref()) + && over(&l.attrs, &r.attrs, eq_attr) +} + +pub fn eq_label(l: Option<&Label>, r: Option<&Label>) -> bool { + both(l, r, |l, r| eq_id(l.ident, r.ident)) +} + +pub fn eq_block(l: &Block, r: &Block) -> bool { + l.rules == r.rules && over(&l.stmts, &r.stmts, eq_stmt) +} + +pub fn eq_stmt(l: &Stmt, r: &Stmt) -> bool { + use StmtKind::*; + match (&l.kind, &r.kind) { + (Let(l), Let(r)) => { + eq_pat(&l.pat, &r.pat) + && both(l.ty.as_ref(), r.ty.as_ref(), |l, r| eq_ty(l, r)) + && eq_local_kind(&l.kind, &r.kind) + && over(&l.attrs, &r.attrs, eq_attr) + }, + (Item(l), Item(r)) => eq_item(l, r, eq_item_kind), + (Expr(l), Expr(r)) | (Semi(l), Semi(r)) => eq_expr(l, r), + (Empty, Empty) => true, + (MacCall(l), MacCall(r)) => { + l.style == r.style && eq_mac_call(&l.mac, &r.mac) && over(&l.attrs, &r.attrs, eq_attr) + }, + _ => false, + } +} + +pub fn eq_local_kind(l: &LocalKind, r: &LocalKind) -> bool { + use LocalKind::*; + match (l, r) { + (Decl, Decl) => true, + (Init(l), Init(r)) => eq_expr(l, r), + (InitElse(li, le), InitElse(ri, re)) => eq_expr(li, ri) && eq_block(le, re), + _ => false, + } +} + +pub fn eq_item(l: &Item, r: &Item, mut eq_kind: impl FnMut(&K, &K) -> bool) -> bool { + eq_id(l.ident, r.ident) && over(&l.attrs, &r.attrs, eq_attr) && eq_vis(&l.vis, &r.vis) && eq_kind(&l.kind, &r.kind) +} + +#[expect(clippy::similar_names, clippy::too_many_lines)] // Just a big match statement +pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { + use ItemKind::*; + match (l, r) { + (ExternCrate(l), ExternCrate(r)) => l == r, + (Use(l), Use(r)) => eq_use_tree(l, r), + ( + Static(box StaticItem { + ty: lt, + mutability: lm, + expr: le, + safety: ls, + }), + Static(box StaticItem { + ty: rt, + mutability: rm, + expr: re, + safety: rs, + }), + ) => lm == rm && ls == rs && eq_ty(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()), + ( + Const(box ConstItem { + defaultness: ld, + generics: lg, + ty: lt, + expr: le, + }), + Const(box ConstItem { + defaultness: rd, + generics: rg, + ty: rt, + expr: re, + }), + ) => eq_defaultness(*ld, *rd) && eq_generics(lg, rg) && eq_ty(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()), + ( + Fn(box ast::Fn { + defaultness: ld, + sig: lf, + generics: lg, + body: lb, + }), + Fn(box ast::Fn { + defaultness: rd, + sig: rf, + generics: rg, + body: rb, + }), + ) => { + eq_defaultness(*ld, *rd) + && eq_fn_sig(lf, rf) + && eq_generics(lg, rg) + && both(lb.as_ref(), rb.as_ref(), |l, r| eq_block(l, r)) + }, + (Mod(lu, lmk), Mod(ru, rmk)) => { + lu == ru + && match (lmk, rmk) { + (ModKind::Loaded(litems, linline, _), ModKind::Loaded(ritems, rinline, _)) => { + linline == rinline && over(litems, ritems, |l, r| eq_item(l, r, eq_item_kind)) + }, + (ModKind::Unloaded, ModKind::Unloaded) => true, + _ => false, + } + }, + (ForeignMod(l), ForeignMod(r)) => { + both(l.abi.as_ref(), r.abi.as_ref(), eq_str_lit) + && over(&l.items, &r.items, |l, r| eq_item(l, r, eq_foreign_item_kind)) + }, + ( + TyAlias(box ast::TyAlias { + defaultness: ld, + generics: lg, + bounds: lb, + ty: lt, + .. + }), + TyAlias(box ast::TyAlias { + defaultness: rd, + generics: rg, + bounds: rb, + ty: rt, + .. + }), + ) => { + eq_defaultness(*ld, *rd) + && eq_generics(lg, rg) + && over(lb, rb, eq_generic_bound) + && both(lt.as_ref(), rt.as_ref(), |l, r| eq_ty(l, r)) + }, + (Enum(le, lg), Enum(re, rg)) => over(&le.variants, &re.variants, eq_variant) && eq_generics(lg, rg), + (Struct(lv, lg), Struct(rv, rg)) | (Union(lv, lg), Union(rv, rg)) => { + eq_variant_data(lv, rv) && eq_generics(lg, rg) + }, + ( + Trait(box ast::Trait { + is_auto: la, + safety: lu, + generics: lg, + bounds: lb, + items: li, + }), + Trait(box ast::Trait { + is_auto: ra, + safety: ru, + generics: rg, + bounds: rb, + items: ri, + }), + ) => { + la == ra + && matches!(lu, Safety::Default) == matches!(ru, Safety::Default) + && eq_generics(lg, rg) + && over(lb, rb, eq_generic_bound) + && over(li, ri, |l, r| eq_item(l, r, eq_assoc_item_kind)) + }, + (TraitAlias(lg, lb), TraitAlias(rg, rb)) => eq_generics(lg, rg) && over(lb, rb, eq_generic_bound), + ( + Impl(box ast::Impl { + safety: lu, + polarity: lp, + defaultness: ld, + constness: lc, + generics: lg, + of_trait: lot, + self_ty: lst, + items: li, + }), + Impl(box ast::Impl { + safety: ru, + polarity: rp, + defaultness: rd, + constness: rc, + generics: rg, + of_trait: rot, + self_ty: rst, + items: ri, + }), + ) => { + matches!(lu, Safety::Default) == matches!(ru, Safety::Default) + && matches!(lp, ImplPolarity::Positive) == matches!(rp, ImplPolarity::Positive) + && eq_defaultness(*ld, *rd) + && matches!(lc, ast::Const::No) == matches!(rc, ast::Const::No) + && eq_generics(lg, rg) + && both(lot.as_ref(), rot.as_ref(), |l, r| eq_path(&l.path, &r.path)) + && eq_ty(lst, rst) + && over(li, ri, |l, r| eq_item(l, r, eq_assoc_item_kind)) + }, + (MacCall(l), MacCall(r)) => eq_mac_call(l, r), + (MacroDef(l), MacroDef(r)) => l.macro_rules == r.macro_rules && eq_delim_args(&l.body, &r.body), + _ => false, + } +} + +pub fn eq_foreign_item_kind(l: &ForeignItemKind, r: &ForeignItemKind) -> bool { + use ForeignItemKind::*; + match (l, r) { + ( + Static(box StaticItem { + ty: lt, + mutability: lm, + expr: le, + safety: ls, + }), + Static(box StaticItem { + ty: rt, + mutability: rm, + expr: re, + safety: rs, + }), + ) => lm == rm && eq_ty(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()) && ls == rs, + ( + Fn(box ast::Fn { + defaultness: ld, + sig: lf, + generics: lg, + body: lb, + }), + Fn(box ast::Fn { + defaultness: rd, + sig: rf, + generics: rg, + body: rb, + }), + ) => { + eq_defaultness(*ld, *rd) + && eq_fn_sig(lf, rf) + && eq_generics(lg, rg) + && both(lb.as_ref(), rb.as_ref(), |l, r| eq_block(l, r)) + }, + ( + TyAlias(box ast::TyAlias { + defaultness: ld, + generics: lg, + bounds: lb, + ty: lt, + .. + }), + TyAlias(box ast::TyAlias { + defaultness: rd, + generics: rg, + bounds: rb, + ty: rt, + .. + }), + ) => { + eq_defaultness(*ld, *rd) + && eq_generics(lg, rg) + && over(lb, rb, eq_generic_bound) + && both(lt.as_ref(), rt.as_ref(), |l, r| eq_ty(l, r)) + }, + (MacCall(l), MacCall(r)) => eq_mac_call(l, r), + _ => false, + } +} + +pub fn eq_assoc_item_kind(l: &AssocItemKind, r: &AssocItemKind) -> bool { + use AssocItemKind::*; + match (l, r) { + ( + Const(box ConstItem { + defaultness: ld, + generics: lg, + ty: lt, + expr: le, + }), + Const(box ConstItem { + defaultness: rd, + generics: rg, + ty: rt, + expr: re, + }), + ) => eq_defaultness(*ld, *rd) && eq_generics(lg, rg) && eq_ty(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()), + ( + Fn(box ast::Fn { + defaultness: ld, + sig: lf, + generics: lg, + body: lb, + }), + Fn(box ast::Fn { + defaultness: rd, + sig: rf, + generics: rg, + body: rb, + }), + ) => { + eq_defaultness(*ld, *rd) + && eq_fn_sig(lf, rf) + && eq_generics(lg, rg) + && both(lb.as_ref(), rb.as_ref(), |l, r| eq_block(l, r)) + }, + ( + Type(box TyAlias { + defaultness: ld, + generics: lg, + bounds: lb, + ty: lt, + .. + }), + Type(box TyAlias { + defaultness: rd, + generics: rg, + bounds: rb, + ty: rt, + .. + }), + ) => { + eq_defaultness(*ld, *rd) + && eq_generics(lg, rg) + && over(lb, rb, eq_generic_bound) + && both(lt.as_ref(), rt.as_ref(), |l, r| eq_ty(l, r)) + }, + (MacCall(l), MacCall(r)) => eq_mac_call(l, r), + _ => false, + } +} + +pub fn eq_variant(l: &Variant, r: &Variant) -> bool { + l.is_placeholder == r.is_placeholder + && over(&l.attrs, &r.attrs, eq_attr) + && eq_vis(&l.vis, &r.vis) + && eq_id(l.ident, r.ident) + && eq_variant_data(&l.data, &r.data) + && both(l.disr_expr.as_ref(), r.disr_expr.as_ref(), |l, r| { + eq_expr(&l.value, &r.value) + }) +} + +pub fn eq_variant_data(l: &VariantData, r: &VariantData) -> bool { + use VariantData::*; + match (l, r) { + (Unit(_), Unit(_)) => true, + (Struct { fields: l, .. }, Struct { fields: r, .. }) | (Tuple(l, _), Tuple(r, _)) => { + over(l, r, eq_struct_field) + }, + _ => false, + } +} + +pub fn eq_struct_field(l: &FieldDef, r: &FieldDef) -> bool { + l.is_placeholder == r.is_placeholder + && over(&l.attrs, &r.attrs, eq_attr) + && eq_vis(&l.vis, &r.vis) + && both(l.ident.as_ref(), r.ident.as_ref(), |l, r| eq_id(*l, *r)) + && eq_ty(&l.ty, &r.ty) +} + +pub fn eq_fn_sig(l: &FnSig, r: &FnSig) -> bool { + eq_fn_decl(&l.decl, &r.decl) && eq_fn_header(&l.header, &r.header) +} + +fn eq_opt_coroutine_kind(l: Option, r: Option) -> bool { + matches!( + (l, r), + (Some(CoroutineKind::Async { .. }), Some(CoroutineKind::Async { .. })) + | (Some(CoroutineKind::Gen { .. }), Some(CoroutineKind::Gen { .. })) + | ( + Some(CoroutineKind::AsyncGen { .. }), + Some(CoroutineKind::AsyncGen { .. }) + ) + | (None, None) + ) +} + +pub fn eq_fn_header(l: &FnHeader, r: &FnHeader) -> bool { + matches!(l.safety, Safety::Default) == matches!(r.safety, Safety::Default) + && eq_opt_coroutine_kind(l.coroutine_kind, r.coroutine_kind) + && matches!(l.constness, Const::No) == matches!(r.constness, Const::No) + && eq_ext(&l.ext, &r.ext) +} + +pub fn eq_generics(l: &Generics, r: &Generics) -> bool { + over(&l.params, &r.params, eq_generic_param) + && over(&l.where_clause.predicates, &r.where_clause.predicates, |l, r| { + eq_where_predicate(l, r) + }) +} + +pub fn eq_where_predicate(l: &WherePredicate, r: &WherePredicate) -> bool { + use WherePredicateKind::*; + match (&l.kind, &r.kind) { + (BoundPredicate(l), BoundPredicate(r)) => { + over(&l.bound_generic_params, &r.bound_generic_params, |l, r| { + eq_generic_param(l, r) + }) && eq_ty(&l.bounded_ty, &r.bounded_ty) + && over(&l.bounds, &r.bounds, eq_generic_bound) + }, + (RegionPredicate(l), RegionPredicate(r)) => { + eq_id(l.lifetime.ident, r.lifetime.ident) && over(&l.bounds, &r.bounds, eq_generic_bound) + }, + (EqPredicate(l), EqPredicate(r)) => eq_ty(&l.lhs_ty, &r.lhs_ty) && eq_ty(&l.rhs_ty, &r.rhs_ty), + _ => false, + } +} + +pub fn eq_use_tree(l: &UseTree, r: &UseTree) -> bool { + eq_path(&l.prefix, &r.prefix) && eq_use_tree_kind(&l.kind, &r.kind) +} + +pub fn eq_anon_const(l: &AnonConst, r: &AnonConst) -> bool { + eq_expr(&l.value, &r.value) +} + +pub fn eq_use_tree_kind(l: &UseTreeKind, r: &UseTreeKind) -> bool { + use UseTreeKind::*; + match (l, r) { + (Glob, Glob) => true, + (Simple(l), Simple(r)) => both(l.as_ref(), r.as_ref(), |l, r| eq_id(*l, *r)), + (Nested { items: l, .. }, Nested { items: r, .. }) => over(l, r, |(l, _), (r, _)| eq_use_tree(l, r)), + _ => false, + } +} + +pub fn eq_defaultness(l: Defaultness, r: Defaultness) -> bool { + matches!( + (l, r), + (Defaultness::Final, Defaultness::Final) | (Defaultness::Default(_), Defaultness::Default(_)) + ) +} + +pub fn eq_vis(l: &Visibility, r: &Visibility) -> bool { + use VisibilityKind::*; + match (&l.kind, &r.kind) { + (Public, Public) | (Inherited, Inherited) => true, + (Restricted { path: l, .. }, Restricted { path: r, .. }) => eq_path(l, r), + _ => false, + } +} + +pub fn eq_fn_decl(l: &FnDecl, r: &FnDecl) -> bool { + eq_fn_ret_ty(&l.output, &r.output) + && over(&l.inputs, &r.inputs, |l, r| { + l.is_placeholder == r.is_placeholder + && eq_pat(&l.pat, &r.pat) + && eq_ty(&l.ty, &r.ty) + && over(&l.attrs, &r.attrs, eq_attr) + }) +} + +pub fn eq_closure_binder(l: &ClosureBinder, r: &ClosureBinder) -> bool { + match (l, r) { + (ClosureBinder::NotPresent, ClosureBinder::NotPresent) => true, + (ClosureBinder::For { generic_params: lp, .. }, ClosureBinder::For { generic_params: rp, .. }) => { + lp.len() == rp.len() && std::iter::zip(lp.iter(), rp.iter()).all(|(l, r)| eq_generic_param(l, r)) + }, + _ => false, + } +} + +pub fn eq_fn_ret_ty(l: &FnRetTy, r: &FnRetTy) -> bool { + match (l, r) { + (FnRetTy::Default(_), FnRetTy::Default(_)) => true, + (FnRetTy::Ty(l), FnRetTy::Ty(r)) => eq_ty(l, r), + _ => false, + } +} + +pub fn eq_ty(l: &Ty, r: &Ty) -> bool { + use TyKind::*; + match (&l.kind, &r.kind) { + (Paren(l), _) => eq_ty(l, r), + (_, Paren(r)) => eq_ty(l, r), + (Never, Never) | (Infer, Infer) | (ImplicitSelf, ImplicitSelf) | (Err(_), Err(_)) | (CVarArgs, CVarArgs) => { + true + }, + (Slice(l), Slice(r)) => eq_ty(l, r), + (Array(le, ls), Array(re, rs)) => eq_ty(le, re) && eq_expr(&ls.value, &rs.value), + (Ptr(l), Ptr(r)) => l.mutbl == r.mutbl && eq_ty(&l.ty, &r.ty), + (Ref(ll, l), Ref(rl, r)) => { + both(ll.as_ref(), rl.as_ref(), |l, r| eq_id(l.ident, r.ident)) && l.mutbl == r.mutbl && eq_ty(&l.ty, &r.ty) + }, + (PinnedRef(ll, l), PinnedRef(rl, r)) => { + both(ll.as_ref(), rl.as_ref(), |l, r| eq_id(l.ident, r.ident)) && l.mutbl == r.mutbl && eq_ty(&l.ty, &r.ty) + }, + (BareFn(l), BareFn(r)) => { + l.safety == r.safety + && eq_ext(&l.ext, &r.ext) + && over(&l.generic_params, &r.generic_params, eq_generic_param) + && eq_fn_decl(&l.decl, &r.decl) + }, + (Tup(l), Tup(r)) => over(l, r, |l, r| eq_ty(l, r)), + (Path(lq, lp), Path(rq, rp)) => both(lq.as_ref(), rq.as_ref(), eq_qself) && eq_path(lp, rp), + (TraitObject(lg, ls), TraitObject(rg, rs)) => ls == rs && over(lg, rg, eq_generic_bound), + (ImplTrait(_, lg), ImplTrait(_, rg)) => over(lg, rg, eq_generic_bound), + (Typeof(l), Typeof(r)) => eq_expr(&l.value, &r.value), + (MacCall(l), MacCall(r)) => eq_mac_call(l, r), + _ => false, + } +} + +pub fn eq_ext(l: &Extern, r: &Extern) -> bool { + use Extern::*; + match (l, r) { + (None, None) | (Implicit(_), Implicit(_)) => true, + (Explicit(l, _), Explicit(r, _)) => eq_str_lit(l, r), + _ => false, + } +} + +pub fn eq_str_lit(l: &StrLit, r: &StrLit) -> bool { + l.style == r.style && l.symbol == r.symbol && l.suffix == r.suffix +} + +pub fn eq_poly_ref_trait(l: &PolyTraitRef, r: &PolyTraitRef) -> bool { + l.modifiers == r.modifiers + && eq_path(&l.trait_ref.path, &r.trait_ref.path) + && over(&l.bound_generic_params, &r.bound_generic_params, |l, r| { + eq_generic_param(l, r) + }) +} + +pub fn eq_generic_param(l: &GenericParam, r: &GenericParam) -> bool { + use GenericParamKind::*; + l.is_placeholder == r.is_placeholder + && eq_id(l.ident, r.ident) + && over(&l.bounds, &r.bounds, eq_generic_bound) + && match (&l.kind, &r.kind) { + (Lifetime, Lifetime) => true, + (Type { default: l }, Type { default: r }) => both(l.as_ref(), r.as_ref(), |l, r| eq_ty(l, r)), + ( + Const { + ty: lt, + kw_span: _, + default: ld, + }, + Const { + ty: rt, + kw_span: _, + default: rd, + }, + ) => eq_ty(lt, rt) && both(ld.as_ref(), rd.as_ref(), eq_anon_const), + _ => false, + } + && over(&l.attrs, &r.attrs, eq_attr) +} + +pub fn eq_generic_bound(l: &GenericBound, r: &GenericBound) -> bool { + use GenericBound::*; + match (l, r) { + (Trait(ptr1), Trait(ptr2)) => eq_poly_ref_trait(ptr1, ptr2), + (Outlives(l), Outlives(r)) => eq_id(l.ident, r.ident), + _ => false, + } +} + +pub fn eq_precise_capture(l: &PreciseCapturingArg, r: &PreciseCapturingArg) -> bool { + match (l, r) { + (PreciseCapturingArg::Lifetime(l), PreciseCapturingArg::Lifetime(r)) => l.ident == r.ident, + (PreciseCapturingArg::Arg(l, _), PreciseCapturingArg::Arg(r, _)) => l.segments[0].ident == r.segments[0].ident, + _ => false, + } +} + +fn eq_term(l: &Term, r: &Term) -> bool { + match (l, r) { + (Term::Ty(l), Term::Ty(r)) => eq_ty(l, r), + (Term::Const(l), Term::Const(r)) => eq_anon_const(l, r), + _ => false, + } +} + +pub fn eq_assoc_item_constraint(l: &AssocItemConstraint, r: &AssocItemConstraint) -> bool { + use AssocItemConstraintKind::*; + eq_id(l.ident, r.ident) + && match (&l.kind, &r.kind) { + (Equality { term: l }, Equality { term: r }) => eq_term(l, r), + (Bound { bounds: l }, Bound { bounds: r }) => over(l, r, eq_generic_bound), + _ => false, + } +} + +pub fn eq_mac_call(l: &MacCall, r: &MacCall) -> bool { + eq_path(&l.path, &r.path) && eq_delim_args(&l.args, &r.args) +} + +pub fn eq_attr(l: &Attribute, r: &Attribute) -> bool { + use AttrKind::*; + l.style == r.style + && match (&l.kind, &r.kind) { + (DocComment(l1, l2), DocComment(r1, r2)) => l1 == r1 && l2 == r2, + (Normal(l), Normal(r)) => eq_path(&l.item.path, &r.item.path) && eq_attr_args(&l.item.args, &r.item.args), + _ => false, + } +} + +pub fn eq_attr_args(l: &AttrArgs, r: &AttrArgs) -> bool { + use AttrArgs::*; + match (l, r) { + (Empty, Empty) => true, + (Delimited(la), Delimited(ra)) => eq_delim_args(la, ra), + (Eq(_, AttrArgsEq::Ast(le)), Eq(_, AttrArgsEq::Ast(re))) => eq_expr(le, re), + (Eq(_, AttrArgsEq::Hir(ll)), Eq(_, AttrArgsEq::Hir(rl))) => ll.kind == rl.kind, + _ => false, + } +} + +pub fn eq_delim_args(l: &DelimArgs, r: &DelimArgs) -> bool { + l.delim == r.delim && l.tokens.eq_unspanned(&r.tokens) +} diff --git a/clippy_utils/src/ty.rs b/clippy_utils/src/ty.rs deleted file mode 100644 index 39c9d234a1a..00000000000 --- a/clippy_utils/src/ty.rs +++ /dev/null @@ -1,1343 +0,0 @@ -//! Util methods for [`rustc_middle::ty`] - -#![allow(clippy::module_name_repetitions)] - -use core::ops::ControlFlow; -use itertools::Itertools; -use rustc_ast::ast::Mutability; -use rustc_data_structures::fx::{FxHashMap, FxHashSet}; -use rustc_hir as hir; -use rustc_hir::def::{CtorKind, CtorOf, DefKind, Res}; -use rustc_hir::def_id::DefId; -use rustc_hir::{Expr, FnDecl, LangItem, Safety, TyKind}; -use rustc_infer::infer::TyCtxtInferExt; -use rustc_lint::LateContext; -use rustc_middle::mir::ConstValue; -use rustc_middle::mir::interpret::Scalar; -use rustc_middle::traits::EvaluationResult; -use rustc_middle::ty::layout::ValidityRequirement; -use rustc_middle::ty::{ - self, AdtDef, AliasTy, AssocItem, AssocKind, Binder, BoundRegion, FnSig, GenericArg, GenericArgKind, - GenericArgsRef, GenericParamDefKind, IntTy, ParamEnv, Region, RegionKind, TraitRef, Ty, TyCtxt, TypeSuperVisitable, - TypeVisitable, TypeVisitableExt, TypeVisitor, UintTy, Upcast, VariantDef, VariantDiscr, -}; -use rustc_span::symbol::Ident; -use rustc_span::{DUMMY_SP, Span, Symbol, sym}; -use rustc_target::abi::VariantIdx; -use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt as _; -use rustc_trait_selection::traits::query::normalize::QueryNormalizeExt; -use rustc_trait_selection::traits::{Obligation, ObligationCause}; -use std::assert_matches::debug_assert_matches; -use std::collections::hash_map::Entry; -use std::iter; - -use crate::{def_path_def_ids, match_def_path, path_res}; - -mod type_certainty; -pub use type_certainty::expr_type_is_certain; - -/// Checks if the given type implements copy. -pub fn is_copy<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { - ty.is_copy_modulo_regions(cx.tcx, cx.typing_env()) -} - -/// This checks whether a given type is known to implement Debug. -pub fn has_debug_impl<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { - cx.tcx - .get_diagnostic_item(sym::Debug) - .is_some_and(|debug| implements_trait(cx, ty, debug, &[])) -} - -/// Checks whether a type can be partially moved. -pub fn can_partially_move_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { - if has_drop(cx, ty) || is_copy(cx, ty) { - return false; - } - match ty.kind() { - ty::Param(_) => false, - ty::Adt(def, subs) => def.all_fields().any(|f| !is_copy(cx, f.ty(cx.tcx, subs))), - _ => true, - } -} - -/// Walks into `ty` and returns `true` if any inner type is an instance of the given adt -/// constructor. -pub fn contains_adt_constructor<'tcx>(ty: Ty<'tcx>, adt: AdtDef<'tcx>) -> bool { - ty.walk().any(|inner| match inner.unpack() { - GenericArgKind::Type(inner_ty) => inner_ty.ty_adt_def() == Some(adt), - GenericArgKind::Lifetime(_) | GenericArgKind::Const(_) => false, - }) -} - -/// Walks into `ty` and returns `true` if any inner type is an instance of the given type, or adt -/// constructor of the same type. -/// -/// This method also recurses into opaque type predicates, so call it with `impl Trait` and `U` -/// will also return `true`. -pub fn contains_ty_adt_constructor_opaque<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>, needle: Ty<'tcx>) -> bool { - fn contains_ty_adt_constructor_opaque_inner<'tcx>( - cx: &LateContext<'tcx>, - ty: Ty<'tcx>, - needle: Ty<'tcx>, - seen: &mut FxHashSet, - ) -> bool { - ty.walk().any(|inner| match inner.unpack() { - GenericArgKind::Type(inner_ty) => { - if inner_ty == needle { - return true; - } - - if inner_ty.ty_adt_def() == needle.ty_adt_def() { - return true; - } - - if let ty::Alias(ty::Opaque, AliasTy { def_id, .. }) = *inner_ty.kind() { - if !seen.insert(def_id) { - return false; - } - - for (predicate, _span) in cx.tcx.explicit_item_super_predicates(def_id).iter_identity_copied() { - match predicate.kind().skip_binder() { - // For `impl Trait`, it will register a predicate of `T: Trait`, so we go through - // and check substitutions to find `U`. - ty::ClauseKind::Trait(trait_predicate) => { - if trait_predicate - .trait_ref - .args - .types() - .skip(1) // Skip the implicit `Self` generic parameter - .any(|ty| contains_ty_adt_constructor_opaque_inner(cx, ty, needle, seen)) - { - return true; - } - }, - // For `impl Trait`, it will register a predicate of `::Assoc = U`, - // so we check the term for `U`. - ty::ClauseKind::Projection(projection_predicate) => { - if let ty::TermKind::Ty(ty) = projection_predicate.term.unpack() { - if contains_ty_adt_constructor_opaque_inner(cx, ty, needle, seen) { - return true; - } - }; - }, - _ => (), - } - } - } - - false - }, - GenericArgKind::Lifetime(_) | GenericArgKind::Const(_) => false, - }) - } - - // A hash set to ensure that the same opaque type (`impl Trait` in RPIT or TAIT) is not - // visited twice. - let mut seen = FxHashSet::default(); - contains_ty_adt_constructor_opaque_inner(cx, ty, needle, &mut seen) -} - -/// Resolves `::Item` for `T` -/// Do not invoke without first verifying that the type implements `Iterator` -pub fn get_iterator_item_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option> { - cx.tcx - .get_diagnostic_item(sym::Iterator) - .and_then(|iter_did| cx.get_associated_type(ty, iter_did, "Item")) -} - -/// Get the diagnostic name of a type, e.g. `sym::HashMap`. To check if a type -/// implements a trait marked with a diagnostic item use [`implements_trait`]. -/// -/// For a further exploitation what diagnostic items are see [diagnostic items] in -/// rustc-dev-guide. -/// -/// [Diagnostic Items]: https://rustc-dev-guide.rust-lang.org/diagnostics/diagnostic-items.html -pub fn get_type_diagnostic_name(cx: &LateContext<'_>, ty: Ty<'_>) -> Option { - match ty.kind() { - ty::Adt(adt, _) => cx.tcx.get_diagnostic_name(adt.did()), - _ => None, - } -} - -/// Returns true if `ty` is a type on which calling `Clone` through a function instead of -/// as a method, such as `Arc::clone()` is considered idiomatic. -/// -/// Lints should avoid suggesting to replace instances of `ty::Clone()` by `.clone()` for objects -/// of those types. -pub fn should_call_clone_as_function(cx: &LateContext<'_>, ty: Ty<'_>) -> bool { - matches!( - get_type_diagnostic_name(cx, ty), - Some(sym::Arc | sym::ArcWeak | sym::Rc | sym::RcWeak) - ) -} - -/// Returns true if ty has `iter` or `iter_mut` methods -pub fn has_iter_method(cx: &LateContext<'_>, probably_ref_ty: Ty<'_>) -> Option { - // FIXME: instead of this hard-coded list, we should check if `::iter` - // exists and has the desired signature. Unfortunately FnCtxt is not exported - // so we can't use its `lookup_method` method. - let into_iter_collections: &[Symbol] = &[ - sym::Vec, - sym::Option, - sym::Result, - sym::BTreeMap, - sym::BTreeSet, - sym::VecDeque, - sym::LinkedList, - sym::BinaryHeap, - sym::HashSet, - sym::HashMap, - sym::PathBuf, - sym::Path, - sym::Receiver, - ]; - - let ty_to_check = match probably_ref_ty.kind() { - ty::Ref(_, ty_to_check, _) => *ty_to_check, - _ => probably_ref_ty, - }; - - let def_id = match ty_to_check.kind() { - ty::Array(..) => return Some(sym::array), - ty::Slice(..) => return Some(sym::slice), - ty::Adt(adt, _) => adt.did(), - _ => return None, - }; - - for &name in into_iter_collections { - if cx.tcx.is_diagnostic_item(name, def_id) { - return Some(cx.tcx.item_name(def_id)); - } - } - None -} - -/// Checks whether a type implements a trait. -/// The function returns false in case the type contains an inference variable. -/// -/// See: -/// * [`get_trait_def_id`](super::get_trait_def_id) to get a trait [`DefId`]. -/// * [Common tools for writing lints] for an example how to use this function and other options. -/// -/// [Common tools for writing lints]: https://github.com/rust-lang/rust-clippy/blob/master/book/src/development/common_tools_writing_lints.md#checking-if-a-type-implements-a-specific-trait -pub fn implements_trait<'tcx>( - cx: &LateContext<'tcx>, - ty: Ty<'tcx>, - trait_id: DefId, - args: &[GenericArg<'tcx>], -) -> bool { - implements_trait_with_env_from_iter( - cx.tcx, - cx.typing_env(), - ty, - trait_id, - None, - args.iter().map(|&x| Some(x)), - ) -} - -/// Same as `implements_trait` but allows using a `ParamEnv` different from the lint context. -/// -/// The `callee_id` argument is used to determine whether this is a function call in a `const fn` -/// environment, used for checking const traits. -pub fn implements_trait_with_env<'tcx>( - tcx: TyCtxt<'tcx>, - typing_env: ty::TypingEnv<'tcx>, - ty: Ty<'tcx>, - trait_id: DefId, - callee_id: Option, - args: &[GenericArg<'tcx>], -) -> bool { - implements_trait_with_env_from_iter(tcx, typing_env, ty, trait_id, callee_id, args.iter().map(|&x| Some(x))) -} - -/// Same as `implements_trait_from_env` but takes the arguments as an iterator. -pub fn implements_trait_with_env_from_iter<'tcx>( - tcx: TyCtxt<'tcx>, - typing_env: ty::TypingEnv<'tcx>, - ty: Ty<'tcx>, - trait_id: DefId, - callee_id: Option, - args: impl IntoIterator>>>, -) -> bool { - // Clippy shouldn't have infer types - assert!(!ty.has_infer()); - - // If a `callee_id` is passed, then we assert that it is a body owner - // through calling `body_owner_kind`, which would panic if the callee - // does not have a body. - if let Some(callee_id) = callee_id { - let _ = tcx.hir().body_owner_kind(callee_id); - } - - let ty = tcx.erase_regions(ty); - if ty.has_escaping_bound_vars() { - return false; - } - - let (infcx, param_env) = tcx.infer_ctxt().build_with_typing_env(typing_env); - let args = args - .into_iter() - .map(|arg| arg.into().unwrap_or_else(|| infcx.next_ty_var(DUMMY_SP).into())) - .collect::>(); - - let trait_ref = TraitRef::new(tcx, trait_id, [GenericArg::from(ty)].into_iter().chain(args)); - - debug_assert_matches!( - tcx.def_kind(trait_id), - DefKind::Trait | DefKind::TraitAlias, - "`DefId` must belong to a trait or trait alias" - ); - #[cfg(debug_assertions)] - assert_generic_args_match(tcx, trait_id, trait_ref.args); - - let obligation = Obligation { - cause: ObligationCause::dummy(), - param_env, - recursion_depth: 0, - predicate: trait_ref.upcast(tcx), - }; - infcx - .evaluate_obligation(&obligation) - .is_ok_and(EvaluationResult::must_apply_modulo_regions) -} - -/// Checks whether this type implements `Drop`. -pub fn has_drop<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { - match ty.ty_adt_def() { - Some(def) => def.has_dtor(cx.tcx), - None => false, - } -} - -// Returns whether the type has #[must_use] attribute -pub fn is_must_use_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { - match ty.kind() { - ty::Adt(adt, _) => cx.tcx.has_attr(adt.did(), sym::must_use), - ty::Foreign(did) => cx.tcx.has_attr(*did, sym::must_use), - ty::Slice(ty) | ty::Array(ty, _) | ty::RawPtr(ty, _) | ty::Ref(_, ty, _) => { - // for the Array case we don't need to care for the len == 0 case - // because we don't want to lint functions returning empty arrays - is_must_use_ty(cx, *ty) - }, - ty::Tuple(args) => args.iter().any(|ty| is_must_use_ty(cx, ty)), - ty::Alias(ty::Opaque, AliasTy { def_id, .. }) => { - for (predicate, _) in cx.tcx.explicit_item_super_predicates(def_id).skip_binder() { - if let ty::ClauseKind::Trait(trait_predicate) = predicate.kind().skip_binder() { - if cx.tcx.has_attr(trait_predicate.trait_ref.def_id, sym::must_use) { - return true; - } - } - } - false - }, - ty::Dynamic(binder, _, _) => { - for predicate in *binder { - if let ty::ExistentialPredicate::Trait(ref trait_ref) = predicate.skip_binder() { - if cx.tcx.has_attr(trait_ref.def_id, sym::must_use) { - return true; - } - } - } - false - }, - _ => false, - } -} - -// FIXME: Per https://doc.rust-lang.org/nightly/nightly-rustc/rustc_trait_selection/infer/at/struct.At.html#method.normalize -// this function can be removed once the `normalize` method does not panic when normalization does -// not succeed -/// Checks if `Ty` is normalizable. This function is useful -/// to avoid crashes on `layout_of`. -pub fn is_normalizable<'tcx>(cx: &LateContext<'tcx>, param_env: ParamEnv<'tcx>, ty: Ty<'tcx>) -> bool { - is_normalizable_helper(cx, param_env, ty, &mut FxHashMap::default()) -} - -fn is_normalizable_helper<'tcx>( - cx: &LateContext<'tcx>, - param_env: ParamEnv<'tcx>, - ty: Ty<'tcx>, - cache: &mut FxHashMap, bool>, -) -> bool { - if let Some(&cached_result) = cache.get(&ty) { - return cached_result; - } - // prevent recursive loops, false-negative is better than endless loop leading to stack overflow - cache.insert(ty, false); - let infcx = cx.tcx.infer_ctxt().build(cx.typing_mode()); - let cause = ObligationCause::dummy(); - let result = if infcx.at(&cause, param_env).query_normalize(ty).is_ok() { - match ty.kind() { - ty::Adt(def, args) => def.variants().iter().all(|variant| { - variant - .fields - .iter() - .all(|field| is_normalizable_helper(cx, param_env, field.ty(cx.tcx, args), cache)) - }), - _ => ty.walk().all(|generic_arg| match generic_arg.unpack() { - GenericArgKind::Type(inner_ty) if inner_ty != ty => { - is_normalizable_helper(cx, param_env, inner_ty, cache) - }, - _ => true, // if inner_ty == ty, we've already checked it - }), - } - } else { - false - }; - cache.insert(ty, result); - result -} - -/// Returns `true` if the given type is a non aggregate primitive (a `bool` or `char`, any -/// integer or floating-point number type). -/// -/// For checking aggregation of primitive types (e.g. tuples and slices of primitive type) see -/// `is_recursively_primitive_type` -pub fn is_non_aggregate_primitive_type(ty: Ty<'_>) -> bool { - matches!(ty.kind(), ty::Bool | ty::Char | ty::Int(_) | ty::Uint(_) | ty::Float(_)) -} - -/// Returns `true` if the given type is a primitive (a `bool` or `char`, any integer or -/// floating-point number type, a `str`, or an array, slice, or tuple of those types). -pub fn is_recursively_primitive_type(ty: Ty<'_>) -> bool { - match *ty.kind() { - ty::Bool | ty::Char | ty::Int(_) | ty::Uint(_) | ty::Float(_) | ty::Str => true, - ty::Ref(_, inner, _) if inner.is_str() => true, - ty::Array(inner_type, _) | ty::Slice(inner_type) => is_recursively_primitive_type(inner_type), - ty::Tuple(inner_types) => inner_types.iter().all(is_recursively_primitive_type), - _ => false, - } -} - -/// Checks if the type is a reference equals to a diagnostic item -pub fn is_type_ref_to_diagnostic_item(cx: &LateContext<'_>, ty: Ty<'_>, diag_item: Symbol) -> bool { - match ty.kind() { - ty::Ref(_, ref_ty, _) => match ref_ty.kind() { - ty::Adt(adt, _) => cx.tcx.is_diagnostic_item(diag_item, adt.did()), - _ => false, - }, - _ => false, - } -} - -/// Checks if the type is equal to a diagnostic item. To check if a type implements a -/// trait marked with a diagnostic item use [`implements_trait`]. -/// -/// For a further exploitation what diagnostic items are see [diagnostic items] in -/// rustc-dev-guide. -/// -/// --- -/// -/// If you change the signature, remember to update the internal lint `MatchTypeOnDiagItem` -/// -/// [Diagnostic Items]: https://rustc-dev-guide.rust-lang.org/diagnostics/diagnostic-items.html -pub fn is_type_diagnostic_item(cx: &LateContext<'_>, ty: Ty<'_>, diag_item: Symbol) -> bool { - match ty.kind() { - ty::Adt(adt, _) => cx.tcx.is_diagnostic_item(diag_item, adt.did()), - _ => false, - } -} - -/// Checks if the type is equal to a lang item. -/// -/// Returns `false` if the `LangItem` is not defined. -pub fn is_type_lang_item(cx: &LateContext<'_>, ty: Ty<'_>, lang_item: LangItem) -> bool { - match ty.kind() { - ty::Adt(adt, _) => cx.tcx.lang_items().get(lang_item) == Some(adt.did()), - _ => false, - } -} - -/// Return `true` if the passed `typ` is `isize` or `usize`. -pub fn is_isize_or_usize(typ: Ty<'_>) -> bool { - matches!(typ.kind(), ty::Int(IntTy::Isize) | ty::Uint(UintTy::Usize)) -} - -/// Checks if type is struct, enum or union type with the given def path. -/// -/// If the type is a diagnostic item, use `is_type_diagnostic_item` instead. -/// If you change the signature, remember to update the internal lint `MatchTypeOnDiagItem` -pub fn match_type(cx: &LateContext<'_>, ty: Ty<'_>, path: &[&str]) -> bool { - match ty.kind() { - ty::Adt(adt, _) => match_def_path(cx, adt.did(), path), - _ => false, - } -} - -/// Checks if the drop order for a type matters. -/// -/// Some std types implement drop solely to deallocate memory. For these types, and composites -/// containing them, changing the drop order won't result in any observable side effects. -pub fn needs_ordered_drop<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { - fn needs_ordered_drop_inner<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>, seen: &mut FxHashSet>) -> bool { - if !seen.insert(ty) { - return false; - } - if !ty.has_significant_drop(cx.tcx, cx.typing_env()) { - false - } - // Check for std types which implement drop, but only for memory allocation. - else if is_type_lang_item(cx, ty, LangItem::OwnedBox) - || matches!( - get_type_diagnostic_name(cx, ty), - Some(sym::HashSet | sym::Rc | sym::Arc | sym::cstring_type | sym::RcWeak | sym::ArcWeak) - ) - { - // Check all of the generic arguments. - if let ty::Adt(_, subs) = ty.kind() { - subs.types().any(|ty| needs_ordered_drop_inner(cx, ty, seen)) - } else { - true - } - } else if !cx - .tcx - .lang_items() - .drop_trait() - .is_some_and(|id| implements_trait(cx, ty, id, &[])) - { - // This type doesn't implement drop, so no side effects here. - // Check if any component type has any. - match ty.kind() { - ty::Tuple(fields) => fields.iter().any(|ty| needs_ordered_drop_inner(cx, ty, seen)), - ty::Array(ty, _) => needs_ordered_drop_inner(cx, *ty, seen), - ty::Adt(adt, subs) => adt - .all_fields() - .map(|f| f.ty(cx.tcx, subs)) - .any(|ty| needs_ordered_drop_inner(cx, ty, seen)), - _ => true, - } - } else { - true - } - } - - needs_ordered_drop_inner(cx, ty, &mut FxHashSet::default()) -} - -/// Peels off all references on the type. Returns the underlying type, the number of references -/// removed, and whether the pointer is ultimately mutable or not. -pub fn peel_mid_ty_refs_is_mutable(ty: Ty<'_>) -> (Ty<'_>, usize, Mutability) { - fn f(ty: Ty<'_>, count: usize, mutability: Mutability) -> (Ty<'_>, usize, Mutability) { - match ty.kind() { - ty::Ref(_, ty, Mutability::Mut) => f(*ty, count + 1, mutability), - ty::Ref(_, ty, Mutability::Not) => f(*ty, count + 1, Mutability::Not), - _ => (ty, count, mutability), - } - } - f(ty, 0, Mutability::Mut) -} - -/// Returns `true` if the given type is an `unsafe` function. -pub fn type_is_unsafe_function<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { - match ty.kind() { - ty::FnDef(..) | ty::FnPtr(..) => ty.fn_sig(cx.tcx).safety() == Safety::Unsafe, - _ => false, - } -} - -/// Returns the base type for HIR references and pointers. -pub fn walk_ptrs_hir_ty<'tcx>(ty: &'tcx hir::Ty<'tcx>) -> &'tcx hir::Ty<'tcx> { - match ty.kind { - TyKind::Ptr(ref mut_ty) | TyKind::Ref(_, ref mut_ty) => walk_ptrs_hir_ty(mut_ty.ty), - _ => ty, - } -} - -/// Returns the base type for references and raw pointers, and count reference -/// depth. -pub fn walk_ptrs_ty_depth(ty: Ty<'_>) -> (Ty<'_>, usize) { - fn inner(ty: Ty<'_>, depth: usize) -> (Ty<'_>, usize) { - match ty.kind() { - ty::Ref(_, ty, _) => inner(*ty, depth + 1), - _ => (ty, depth), - } - } - inner(ty, 0) -} - -/// Returns `true` if types `a` and `b` are same types having same `Const` generic args, -/// otherwise returns `false` -pub fn same_type_and_consts<'tcx>(a: Ty<'tcx>, b: Ty<'tcx>) -> bool { - match (&a.kind(), &b.kind()) { - (&ty::Adt(did_a, args_a), &ty::Adt(did_b, args_b)) => { - if did_a != did_b { - return false; - } - - args_a - .iter() - .zip(args_b.iter()) - .all(|(arg_a, arg_b)| match (arg_a.unpack(), arg_b.unpack()) { - (GenericArgKind::Const(inner_a), GenericArgKind::Const(inner_b)) => inner_a == inner_b, - (GenericArgKind::Type(type_a), GenericArgKind::Type(type_b)) => { - same_type_and_consts(type_a, type_b) - }, - _ => true, - }) - }, - _ => a == b, - } -} - -/// Checks if a given type looks safe to be uninitialized. -pub fn is_uninit_value_valid_for_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { - let typing_env = cx.typing_env().with_post_analysis_normalized(cx.tcx); - cx.tcx - .check_validity_requirement((ValidityRequirement::Uninit, typing_env.as_query_input(ty))) - .unwrap_or_else(|_| is_uninit_value_valid_for_ty_fallback(cx, ty)) -} - -/// A fallback for polymorphic types, which are not supported by `check_validity_requirement`. -fn is_uninit_value_valid_for_ty_fallback<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { - match *ty.kind() { - // The array length may be polymorphic, let's try the inner type. - ty::Array(component, _) => is_uninit_value_valid_for_ty(cx, component), - // Peek through tuples and try their fallbacks. - ty::Tuple(types) => types.iter().all(|ty| is_uninit_value_valid_for_ty(cx, ty)), - // Unions are always fine right now. - // This includes MaybeUninit, the main way people use uninitialized memory. - ty::Adt(adt, _) if adt.is_union() => true, - // Types (e.g. `UnsafeCell>`) that recursively contain only types that can be uninit - // can themselves be uninit too. - // This purposefully ignores enums as they may have a discriminant that can't be uninit. - ty::Adt(adt, args) if adt.is_struct() => adt - .all_fields() - .all(|field| is_uninit_value_valid_for_ty(cx, field.ty(cx.tcx, args))), - // For the rest, conservatively assume that they cannot be uninit. - _ => false, - } -} - -/// Gets an iterator over all predicates which apply to the given item. -pub fn all_predicates_of(tcx: TyCtxt<'_>, id: DefId) -> impl Iterator, Span)> { - let mut next_id = Some(id); - iter::from_fn(move || { - next_id.take().map(|id| { - let preds = tcx.predicates_of(id); - next_id = preds.parent; - preds.predicates.iter() - }) - }) - .flatten() -} - -/// A signature for a function like type. -#[derive(Clone, Copy)] -pub enum ExprFnSig<'tcx> { - Sig(Binder<'tcx, FnSig<'tcx>>, Option), - Closure(Option<&'tcx FnDecl<'tcx>>, Binder<'tcx, FnSig<'tcx>>), - Trait(Binder<'tcx, Ty<'tcx>>, Option>>, Option), -} -impl<'tcx> ExprFnSig<'tcx> { - /// Gets the argument type at the given offset. This will return `None` when the index is out of - /// bounds only for variadic functions, otherwise this will panic. - pub fn input(self, i: usize) -> Option>> { - match self { - Self::Sig(sig, _) => { - if sig.c_variadic() { - sig.inputs().map_bound(|inputs| inputs.get(i).copied()).transpose() - } else { - Some(sig.input(i)) - } - }, - Self::Closure(_, sig) => Some(sig.input(0).map_bound(|ty| ty.tuple_fields()[i])), - Self::Trait(inputs, _, _) => Some(inputs.map_bound(|ty| ty.tuple_fields()[i])), - } - } - - /// Gets the argument type at the given offset. For closures this will also get the type as - /// written. This will return `None` when the index is out of bounds only for variadic - /// functions, otherwise this will panic. - pub fn input_with_hir(self, i: usize) -> Option<(Option<&'tcx hir::Ty<'tcx>>, Binder<'tcx, Ty<'tcx>>)> { - match self { - Self::Sig(sig, _) => { - if sig.c_variadic() { - sig.inputs() - .map_bound(|inputs| inputs.get(i).copied()) - .transpose() - .map(|arg| (None, arg)) - } else { - Some((None, sig.input(i))) - } - }, - Self::Closure(decl, sig) => Some(( - decl.and_then(|decl| decl.inputs.get(i)), - sig.input(0).map_bound(|ty| ty.tuple_fields()[i]), - )), - Self::Trait(inputs, _, _) => Some((None, inputs.map_bound(|ty| ty.tuple_fields()[i]))), - } - } - - /// Gets the result type, if one could be found. Note that the result type of a trait may not be - /// specified. - pub fn output(self) -> Option>> { - match self { - Self::Sig(sig, _) | Self::Closure(_, sig) => Some(sig.output()), - Self::Trait(_, output, _) => output, - } - } - - pub fn predicates_id(&self) -> Option { - if let ExprFnSig::Sig(_, id) | ExprFnSig::Trait(_, _, id) = *self { - id - } else { - None - } - } -} - -/// If the expression is function like, get the signature for it. -pub fn expr_sig<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'_>) -> Option> { - if let Res::Def(DefKind::Fn | DefKind::Ctor(_, CtorKind::Fn) | DefKind::AssocFn, id) = path_res(cx, expr) { - Some(ExprFnSig::Sig(cx.tcx.fn_sig(id).instantiate_identity(), Some(id))) - } else { - ty_sig(cx, cx.typeck_results().expr_ty_adjusted(expr).peel_refs()) - } -} - -/// If the type is function like, get the signature for it. -pub fn ty_sig<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option> { - if let Some(boxed_ty) = ty.boxed_ty() { - return ty_sig(cx, boxed_ty); - } - match *ty.kind() { - ty::Closure(id, subs) => { - let decl = id - .as_local() - .and_then(|id| cx.tcx.hir().fn_decl_by_hir_id(cx.tcx.local_def_id_to_hir_id(id))); - Some(ExprFnSig::Closure(decl, subs.as_closure().sig())) - }, - ty::FnDef(id, subs) => Some(ExprFnSig::Sig(cx.tcx.fn_sig(id).instantiate(cx.tcx, subs), Some(id))), - ty::Alias(ty::Opaque, AliasTy { def_id, args, .. }) => sig_from_bounds( - cx, - ty, - cx.tcx.item_super_predicates(def_id).iter_instantiated(cx.tcx, args), - cx.tcx.opt_parent(def_id), - ), - ty::FnPtr(sig_tys, hdr) => Some(ExprFnSig::Sig(sig_tys.with(hdr), None)), - ty::Dynamic(bounds, _, _) => { - let lang_items = cx.tcx.lang_items(); - match bounds.principal() { - Some(bound) - if Some(bound.def_id()) == lang_items.fn_trait() - || Some(bound.def_id()) == lang_items.fn_once_trait() - || Some(bound.def_id()) == lang_items.fn_mut_trait() => - { - let output = bounds - .projection_bounds() - .find(|p| lang_items.fn_once_output().is_some_and(|id| id == p.item_def_id())) - .map(|p| p.map_bound(|p| p.term.expect_type())); - Some(ExprFnSig::Trait(bound.map_bound(|b| b.args.type_at(0)), output, None)) - }, - _ => None, - } - }, - ty::Alias(ty::Projection, proj) => match cx.tcx.try_normalize_erasing_regions(cx.typing_env(), ty) { - Ok(normalized_ty) if normalized_ty != ty => ty_sig(cx, normalized_ty), - _ => sig_for_projection(cx, proj).or_else(|| sig_from_bounds(cx, ty, cx.param_env.caller_bounds(), None)), - }, - ty::Param(_) => sig_from_bounds(cx, ty, cx.param_env.caller_bounds(), None), - _ => None, - } -} - -fn sig_from_bounds<'tcx>( - cx: &LateContext<'tcx>, - ty: Ty<'tcx>, - predicates: impl IntoIterator>, - predicates_id: Option, -) -> Option> { - let mut inputs = None; - let mut output = None; - let lang_items = cx.tcx.lang_items(); - - for pred in predicates { - match pred.kind().skip_binder() { - ty::ClauseKind::Trait(p) - if (lang_items.fn_trait() == Some(p.def_id()) - || lang_items.fn_mut_trait() == Some(p.def_id()) - || lang_items.fn_once_trait() == Some(p.def_id())) - && p.self_ty() == ty => - { - let i = pred.kind().rebind(p.trait_ref.args.type_at(1)); - if inputs.is_some_and(|inputs| i != inputs) { - // Multiple different fn trait impls. Is this even allowed? - return None; - } - inputs = Some(i); - }, - ty::ClauseKind::Projection(p) - if Some(p.projection_term.def_id) == lang_items.fn_once_output() - && p.projection_term.self_ty() == ty => - { - if output.is_some() { - // Multiple different fn trait impls. Is this even allowed? - return None; - } - output = Some(pred.kind().rebind(p.term.expect_type())); - }, - _ => (), - } - } - - inputs.map(|ty| ExprFnSig::Trait(ty, output, predicates_id)) -} - -fn sig_for_projection<'tcx>(cx: &LateContext<'tcx>, ty: AliasTy<'tcx>) -> Option> { - let mut inputs = None; - let mut output = None; - let lang_items = cx.tcx.lang_items(); - - for (pred, _) in cx - .tcx - .explicit_item_bounds(ty.def_id) - .iter_instantiated_copied(cx.tcx, ty.args) - { - match pred.kind().skip_binder() { - ty::ClauseKind::Trait(p) - if (lang_items.fn_trait() == Some(p.def_id()) - || lang_items.fn_mut_trait() == Some(p.def_id()) - || lang_items.fn_once_trait() == Some(p.def_id())) => - { - let i = pred.kind().rebind(p.trait_ref.args.type_at(1)); - - if inputs.is_some_and(|inputs| inputs != i) { - // Multiple different fn trait impls. Is this even allowed? - return None; - } - inputs = Some(i); - }, - ty::ClauseKind::Projection(p) if Some(p.projection_term.def_id) == lang_items.fn_once_output() => { - if output.is_some() { - // Multiple different fn trait impls. Is this even allowed? - return None; - } - output = pred.kind().rebind(p.term.as_type()).transpose(); - }, - _ => (), - } - } - - inputs.map(|ty| ExprFnSig::Trait(ty, output, None)) -} - -#[derive(Clone, Copy)] -pub enum EnumValue { - Unsigned(u128), - Signed(i128), -} -impl core::ops::Add for EnumValue { - type Output = Self; - fn add(self, n: u32) -> Self::Output { - match self { - Self::Unsigned(x) => Self::Unsigned(x + u128::from(n)), - Self::Signed(x) => Self::Signed(x + i128::from(n)), - } - } -} - -/// Attempts to read the given constant as though it were an enum value. -pub fn read_explicit_enum_value(tcx: TyCtxt<'_>, id: DefId) -> Option { - if let Ok(ConstValue::Scalar(Scalar::Int(value))) = tcx.const_eval_poly(id) { - match tcx.type_of(id).instantiate_identity().kind() { - ty::Int(_) => Some(EnumValue::Signed(value.to_int(value.size()))), - ty::Uint(_) => Some(EnumValue::Unsigned(value.to_uint(value.size()))), - _ => None, - } - } else { - None - } -} - -/// Gets the value of the given variant. -pub fn get_discriminant_value(tcx: TyCtxt<'_>, adt: AdtDef<'_>, i: VariantIdx) -> EnumValue { - let variant = &adt.variant(i); - match variant.discr { - VariantDiscr::Explicit(id) => read_explicit_enum_value(tcx, id).unwrap(), - VariantDiscr::Relative(x) => match adt.variant((i.as_usize() - x as usize).into()).discr { - VariantDiscr::Explicit(id) => read_explicit_enum_value(tcx, id).unwrap() + x, - VariantDiscr::Relative(_) => EnumValue::Unsigned(x.into()), - }, - } -} - -/// Check if the given type is either `core::ffi::c_void`, `std::os::raw::c_void`, or one of the -/// platform specific `libc::::c_void` types in libc. -pub fn is_c_void(cx: &LateContext<'_>, ty: Ty<'_>) -> bool { - if let ty::Adt(adt, _) = ty.kind() - && let &[krate, .., name] = &*cx.get_def_path(adt.did()) - && let sym::libc | sym::core | sym::std = krate - && name == sym::c_void - { - true - } else { - false - } -} - -pub fn for_each_top_level_late_bound_region( - ty: Ty<'_>, - f: impl FnMut(BoundRegion) -> ControlFlow, -) -> ControlFlow { - struct V { - index: u32, - f: F, - } - impl<'tcx, B, F: FnMut(BoundRegion) -> ControlFlow> TypeVisitor> for V { - type Result = ControlFlow; - fn visit_region(&mut self, r: Region<'tcx>) -> Self::Result { - if let RegionKind::ReBound(idx, bound) = r.kind() - && idx.as_u32() == self.index - { - (self.f)(bound) - } else { - ControlFlow::Continue(()) - } - } - fn visit_binder>>(&mut self, t: &Binder<'tcx, T>) -> Self::Result { - self.index += 1; - let res = t.super_visit_with(self); - self.index -= 1; - res - } - } - ty.visit_with(&mut V { index: 0, f }) -} - -pub struct AdtVariantInfo { - pub ind: usize, - pub size: u64, - - /// (ind, size) - pub fields_size: Vec<(usize, u64)>, -} - -impl AdtVariantInfo { - /// Returns ADT variants ordered by size - pub fn new<'tcx>(cx: &LateContext<'tcx>, adt: AdtDef<'tcx>, subst: GenericArgsRef<'tcx>) -> Vec { - let mut variants_size = adt - .variants() - .iter() - .enumerate() - .map(|(i, variant)| { - let mut fields_size = variant - .fields - .iter() - .enumerate() - .map(|(i, f)| (i, approx_ty_size(cx, f.ty(cx.tcx, subst)))) - .collect::>(); - fields_size.sort_by(|(_, a_size), (_, b_size)| (a_size.cmp(b_size))); - - Self { - ind: i, - size: fields_size.iter().map(|(_, size)| size).sum(), - fields_size, - } - }) - .collect::>(); - variants_size.sort_by(|a, b| (b.size.cmp(&a.size))); - variants_size - } -} - -/// Gets the struct or enum variant from the given `Res` -pub fn adt_and_variant_of_res<'tcx>(cx: &LateContext<'tcx>, res: Res) -> Option<(AdtDef<'tcx>, &'tcx VariantDef)> { - match res { - Res::Def(DefKind::Struct, id) => { - let adt = cx.tcx.adt_def(id); - Some((adt, adt.non_enum_variant())) - }, - Res::Def(DefKind::Variant, id) => { - let adt = cx.tcx.adt_def(cx.tcx.parent(id)); - Some((adt, adt.variant_with_id(id))) - }, - Res::Def(DefKind::Ctor(CtorOf::Struct, _), id) => { - let adt = cx.tcx.adt_def(cx.tcx.parent(id)); - Some((adt, adt.non_enum_variant())) - }, - Res::Def(DefKind::Ctor(CtorOf::Variant, _), id) => { - let var_id = cx.tcx.parent(id); - let adt = cx.tcx.adt_def(cx.tcx.parent(var_id)); - Some((adt, adt.variant_with_id(var_id))) - }, - Res::SelfCtor(id) => { - let adt = cx.tcx.type_of(id).instantiate_identity().ty_adt_def().unwrap(); - Some((adt, adt.non_enum_variant())) - }, - _ => None, - } -} - -/// Comes up with an "at least" guesstimate for the type's size, not taking into -/// account the layout of type parameters. -pub fn approx_ty_size<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> u64 { - use rustc_middle::ty::layout::LayoutOf; - if !is_normalizable(cx, cx.param_env, ty) { - return 0; - } - match (cx.layout_of(ty).map(|layout| layout.size.bytes()), ty.kind()) { - (Ok(size), _) => size, - (Err(_), ty::Tuple(list)) => list.iter().map(|t| approx_ty_size(cx, t)).sum(), - (Err(_), ty::Array(t, n)) => n.try_to_target_usize(cx.tcx).unwrap_or_default() * approx_ty_size(cx, *t), - (Err(_), ty::Adt(def, subst)) if def.is_struct() => def - .variants() - .iter() - .map(|v| { - v.fields - .iter() - .map(|field| approx_ty_size(cx, field.ty(cx.tcx, subst))) - .sum::() - }) - .sum(), - (Err(_), ty::Adt(def, subst)) if def.is_enum() => def - .variants() - .iter() - .map(|v| { - v.fields - .iter() - .map(|field| approx_ty_size(cx, field.ty(cx.tcx, subst))) - .sum::() - }) - .max() - .unwrap_or_default(), - (Err(_), ty::Adt(def, subst)) if def.is_union() => def - .variants() - .iter() - .map(|v| { - v.fields - .iter() - .map(|field| approx_ty_size(cx, field.ty(cx.tcx, subst))) - .max() - .unwrap_or_default() - }) - .max() - .unwrap_or_default(), - (Err(_), _) => 0, - } -} - -/// Asserts that the given arguments match the generic parameters of the given item. -#[allow(dead_code)] -fn assert_generic_args_match<'tcx>(tcx: TyCtxt<'tcx>, did: DefId, args: &[GenericArg<'tcx>]) { - let g = tcx.generics_of(did); - let parent = g.parent.map(|did| tcx.generics_of(did)); - let count = g.parent_count + g.own_params.len(); - let params = parent - .map_or([].as_slice(), |p| p.own_params.as_slice()) - .iter() - .chain(&g.own_params) - .map(|x| &x.kind); - - assert!( - count == args.len(), - "wrong number of arguments for `{did:?}`: expected `{count}`, found {}\n\ - note: the expected arguments are: `[{}]`\n\ - the given arguments are: `{args:#?}`", - args.len(), - params.clone().map(GenericParamDefKind::descr).format(", "), - ); - - if let Some((idx, (param, arg))) = - params - .clone() - .zip(args.iter().map(|&x| x.unpack())) - .enumerate() - .find(|(_, (param, arg))| match (param, arg) { - (GenericParamDefKind::Lifetime, GenericArgKind::Lifetime(_)) - | (GenericParamDefKind::Type { .. }, GenericArgKind::Type(_)) - | (GenericParamDefKind::Const { .. }, GenericArgKind::Const(_)) => false, - ( - GenericParamDefKind::Lifetime - | GenericParamDefKind::Type { .. } - | GenericParamDefKind::Const { .. }, - _, - ) => true, - }) - { - panic!( - "incorrect argument for `{did:?}` at index `{idx}`: expected a {}, found `{arg:?}`\n\ - note: the expected arguments are `[{}]`\n\ - the given arguments are `{args:#?}`", - param.descr(), - params.clone().map(GenericParamDefKind::descr).format(", "), - ); - } -} - -/// Returns whether `ty` is never-like; i.e., `!` (never) or an enum with zero variants. -pub fn is_never_like(ty: Ty<'_>) -> bool { - ty.is_never() || (ty.is_enum() && ty.ty_adt_def().is_some_and(|def| def.variants().is_empty())) -} - -/// Makes the projection type for the named associated type in the given impl or trait impl. -/// -/// This function is for associated types which are "known" to exist, and as such, will only return -/// `None` when debug assertions are disabled in order to prevent ICE's. With debug assertions -/// enabled this will check that the named associated type exists, the correct number of -/// arguments are given, and that the correct kinds of arguments are given (lifetime, -/// constant or type). This will not check if type normalization would succeed. -pub fn make_projection<'tcx>( - tcx: TyCtxt<'tcx>, - container_id: DefId, - assoc_ty: Symbol, - args: impl IntoIterator>>, -) -> Option> { - fn helper<'tcx>( - tcx: TyCtxt<'tcx>, - container_id: DefId, - assoc_ty: Symbol, - args: GenericArgsRef<'tcx>, - ) -> Option> { - let Some(assoc_item) = tcx.associated_items(container_id).find_by_name_and_kind( - tcx, - Ident::with_dummy_span(assoc_ty), - AssocKind::Type, - container_id, - ) else { - debug_assert!(false, "type `{assoc_ty}` not found in `{container_id:?}`"); - return None; - }; - #[cfg(debug_assertions)] - assert_generic_args_match(tcx, assoc_item.def_id, args); - - Some(AliasTy::new_from_args(tcx, assoc_item.def_id, args)) - } - helper( - tcx, - container_id, - assoc_ty, - tcx.mk_args_from_iter(args.into_iter().map(Into::into)), - ) -} - -/// Normalizes the named associated type in the given impl or trait impl. -/// -/// This function is for associated types which are "known" to be valid with the given -/// arguments, and as such, will only return `None` when debug assertions are disabled in order -/// to prevent ICE's. With debug assertions enabled this will check that type normalization -/// succeeds as well as everything checked by `make_projection`. -pub fn make_normalized_projection<'tcx>( - tcx: TyCtxt<'tcx>, - typing_env: ty::TypingEnv<'tcx>, - container_id: DefId, - assoc_ty: Symbol, - args: impl IntoIterator>>, -) -> Option> { - fn helper<'tcx>(tcx: TyCtxt<'tcx>, typing_env: ty::TypingEnv<'tcx>, ty: AliasTy<'tcx>) -> Option> { - #[cfg(debug_assertions)] - if let Some((i, arg)) = ty - .args - .iter() - .enumerate() - .find(|(_, arg)| arg.has_escaping_bound_vars()) - { - debug_assert!( - false, - "args contain late-bound region at index `{i}` which can't be normalized.\n\ - use `TyCtxt::instantiate_bound_regions_with_erased`\n\ - note: arg is `{arg:#?}`", - ); - return None; - } - match tcx.try_normalize_erasing_regions(typing_env, Ty::new_projection_from_args(tcx, ty.def_id, ty.args)) { - Ok(ty) => Some(ty), - Err(e) => { - debug_assert!(false, "failed to normalize type `{ty}`: {e:#?}"); - None - }, - } - } - helper(tcx, typing_env, make_projection(tcx, container_id, assoc_ty, args)?) -} - -/// Helper to check if given type has inner mutability such as [`std::cell::Cell`] or -/// [`std::cell::RefCell`]. -#[derive(Default, Debug)] -pub struct InteriorMut<'tcx> { - ignored_def_ids: FxHashSet, - ignore_pointers: bool, - tys: FxHashMap, Option<&'tcx ty::List>>>, -} - -impl<'tcx> InteriorMut<'tcx> { - pub fn new(tcx: TyCtxt<'tcx>, ignore_interior_mutability: &[String]) -> Self { - let ignored_def_ids = ignore_interior_mutability - .iter() - .flat_map(|ignored_ty| { - let path: Vec<&str> = ignored_ty.split("::").collect(); - def_path_def_ids(tcx, path.as_slice()) - }) - .collect(); - - Self { - ignored_def_ids, - ..Self::default() - } - } - - pub fn without_pointers(tcx: TyCtxt<'tcx>, ignore_interior_mutability: &[String]) -> Self { - Self { - ignore_pointers: true, - ..Self::new(tcx, ignore_interior_mutability) - } - } - - /// Check if given type has interior mutability such as [`std::cell::Cell`] or - /// [`std::cell::RefCell`] etc. and if it does, returns a chain of types that causes - /// this type to be interior mutable - pub fn interior_mut_ty_chain(&mut self, cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option<&'tcx ty::List>> { - match self.tys.entry(ty) { - Entry::Occupied(o) => return *o.get(), - // Temporarily insert a `None` to break cycles - Entry::Vacant(v) => v.insert(None), - }; - - let chain = match *ty.kind() { - ty::RawPtr(inner_ty, _) if !self.ignore_pointers => self.interior_mut_ty_chain(cx, inner_ty), - ty::Ref(_, inner_ty, _) | ty::Slice(inner_ty) => self.interior_mut_ty_chain(cx, inner_ty), - ty::Array(inner_ty, size) if size.try_to_target_usize(cx.tcx) != Some(0) => { - self.interior_mut_ty_chain(cx, inner_ty) - }, - ty::Tuple(fields) => fields.iter().find_map(|ty| self.interior_mut_ty_chain(cx, ty)), - ty::Adt(def, _) if def.is_unsafe_cell() => Some(ty::List::empty()), - ty::Adt(def, args) => { - let is_std_collection = matches!( - cx.tcx.get_diagnostic_name(def.did()), - Some( - sym::LinkedList - | sym::Vec - | sym::VecDeque - | sym::BTreeMap - | sym::BTreeSet - | sym::HashMap - | sym::HashSet - | sym::Arc - | sym::Rc - ) - ); - - if is_std_collection || def.is_box() { - // Include the types from std collections that are behind pointers internally - args.types().find_map(|ty| self.interior_mut_ty_chain(cx, ty)) - } else if self.ignored_def_ids.contains(&def.did()) || def.is_phantom_data() { - None - } else { - def.all_fields() - .find_map(|f| self.interior_mut_ty_chain(cx, f.ty(cx.tcx, args))) - } - }, - _ => None, - }; - - chain.map(|chain| { - let list = cx.tcx.mk_type_list_from_iter(chain.iter().chain([ty])); - self.tys.insert(ty, Some(list)); - list - }) - } - - /// Check if given type has interior mutability such as [`std::cell::Cell`] or - /// [`std::cell::RefCell`] etc. - pub fn is_interior_mut_ty(&mut self, cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { - self.interior_mut_ty_chain(cx, ty).is_some() - } -} - -pub fn make_normalized_projection_with_regions<'tcx>( - tcx: TyCtxt<'tcx>, - typing_env: ty::TypingEnv<'tcx>, - container_id: DefId, - assoc_ty: Symbol, - args: impl IntoIterator>>, -) -> Option> { - fn helper<'tcx>(tcx: TyCtxt<'tcx>, typing_env: ty::TypingEnv<'tcx>, ty: AliasTy<'tcx>) -> Option> { - #[cfg(debug_assertions)] - if let Some((i, arg)) = ty - .args - .iter() - .enumerate() - .find(|(_, arg)| arg.has_escaping_bound_vars()) - { - debug_assert!( - false, - "args contain late-bound region at index `{i}` which can't be normalized.\n\ - use `TyCtxt::instantiate_bound_regions_with_erased`\n\ - note: arg is `{arg:#?}`", - ); - return None; - } - let cause = ObligationCause::dummy(); - let (infcx, param_env) = tcx.infer_ctxt().build_with_typing_env(typing_env); - match infcx - .at(&cause, param_env) - .query_normalize(Ty::new_projection_from_args(tcx, ty.def_id, ty.args)) - { - Ok(ty) => Some(ty.value), - Err(e) => { - debug_assert!(false, "failed to normalize type `{ty}`: {e:#?}"); - None - }, - } - } - helper(tcx, typing_env, make_projection(tcx, container_id, assoc_ty, args)?) -} - -pub fn normalize_with_regions<'tcx>(tcx: TyCtxt<'tcx>, typing_env: ty::TypingEnv<'tcx>, ty: Ty<'tcx>) -> Ty<'tcx> { - let cause = ObligationCause::dummy(); - let (infcx, param_env) = tcx.infer_ctxt().build_with_typing_env(typing_env); - infcx - .at(&cause, param_env) - .query_normalize(ty) - .map_or(ty, |ty| ty.value) -} - -/// Checks if the type is `core::mem::ManuallyDrop<_>` -pub fn is_manually_drop(ty: Ty<'_>) -> bool { - ty.ty_adt_def().is_some_and(AdtDef::is_manually_drop) -} - -/// Returns the deref chain of a type, starting with the type itself. -pub fn deref_chain<'cx, 'tcx>(cx: &'cx LateContext<'tcx>, ty: Ty<'tcx>) -> impl Iterator> + 'cx { - iter::successors(Some(ty), |&ty| { - if let Some(deref_did) = cx.tcx.lang_items().deref_trait() - && implements_trait(cx, ty, deref_did, &[]) - { - make_normalized_projection(cx.tcx, cx.typing_env(), deref_did, sym::Target, [ty]) - } else { - None - } - }) -} - -/// Checks if a Ty<'_> has some inherent method Symbol. -/// -/// This does not look for impls in the type's `Deref::Target` type. -/// If you need this, you should wrap this call in `clippy_utils::ty::deref_chain().any(...)`. -pub fn get_adt_inherent_method<'a>(cx: &'a LateContext<'_>, ty: Ty<'_>, method_name: Symbol) -> Option<&'a AssocItem> { - if let Some(ty_did) = ty.ty_adt_def().map(AdtDef::did) { - cx.tcx.inherent_impls(ty_did).iter().find_map(|&did| { - cx.tcx - .associated_items(did) - .filter_by_name_unhygienic(method_name) - .next() - .filter(|item| item.kind == AssocKind::Fn) - }) - } else { - None - } -} - -/// Get's the type of a field by name. -pub fn get_field_by_name<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, name: Symbol) -> Option> { - match *ty.kind() { - ty::Adt(def, args) if def.is_union() || def.is_struct() => def - .non_enum_variant() - .fields - .iter() - .find(|f| f.name == name) - .map(|f| f.ty(tcx, args)), - ty::Tuple(args) => name.as_str().parse::().ok().and_then(|i| args.get(i).copied()), - _ => None, - } -} diff --git a/clippy_utils/src/ty/mod.rs b/clippy_utils/src/ty/mod.rs new file mode 100644 index 00000000000..39c9d234a1a --- /dev/null +++ b/clippy_utils/src/ty/mod.rs @@ -0,0 +1,1343 @@ +//! Util methods for [`rustc_middle::ty`] + +#![allow(clippy::module_name_repetitions)] + +use core::ops::ControlFlow; +use itertools::Itertools; +use rustc_ast::ast::Mutability; +use rustc_data_structures::fx::{FxHashMap, FxHashSet}; +use rustc_hir as hir; +use rustc_hir::def::{CtorKind, CtorOf, DefKind, Res}; +use rustc_hir::def_id::DefId; +use rustc_hir::{Expr, FnDecl, LangItem, Safety, TyKind}; +use rustc_infer::infer::TyCtxtInferExt; +use rustc_lint::LateContext; +use rustc_middle::mir::ConstValue; +use rustc_middle::mir::interpret::Scalar; +use rustc_middle::traits::EvaluationResult; +use rustc_middle::ty::layout::ValidityRequirement; +use rustc_middle::ty::{ + self, AdtDef, AliasTy, AssocItem, AssocKind, Binder, BoundRegion, FnSig, GenericArg, GenericArgKind, + GenericArgsRef, GenericParamDefKind, IntTy, ParamEnv, Region, RegionKind, TraitRef, Ty, TyCtxt, TypeSuperVisitable, + TypeVisitable, TypeVisitableExt, TypeVisitor, UintTy, Upcast, VariantDef, VariantDiscr, +}; +use rustc_span::symbol::Ident; +use rustc_span::{DUMMY_SP, Span, Symbol, sym}; +use rustc_target::abi::VariantIdx; +use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt as _; +use rustc_trait_selection::traits::query::normalize::QueryNormalizeExt; +use rustc_trait_selection::traits::{Obligation, ObligationCause}; +use std::assert_matches::debug_assert_matches; +use std::collections::hash_map::Entry; +use std::iter; + +use crate::{def_path_def_ids, match_def_path, path_res}; + +mod type_certainty; +pub use type_certainty::expr_type_is_certain; + +/// Checks if the given type implements copy. +pub fn is_copy<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { + ty.is_copy_modulo_regions(cx.tcx, cx.typing_env()) +} + +/// This checks whether a given type is known to implement Debug. +pub fn has_debug_impl<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { + cx.tcx + .get_diagnostic_item(sym::Debug) + .is_some_and(|debug| implements_trait(cx, ty, debug, &[])) +} + +/// Checks whether a type can be partially moved. +pub fn can_partially_move_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { + if has_drop(cx, ty) || is_copy(cx, ty) { + return false; + } + match ty.kind() { + ty::Param(_) => false, + ty::Adt(def, subs) => def.all_fields().any(|f| !is_copy(cx, f.ty(cx.tcx, subs))), + _ => true, + } +} + +/// Walks into `ty` and returns `true` if any inner type is an instance of the given adt +/// constructor. +pub fn contains_adt_constructor<'tcx>(ty: Ty<'tcx>, adt: AdtDef<'tcx>) -> bool { + ty.walk().any(|inner| match inner.unpack() { + GenericArgKind::Type(inner_ty) => inner_ty.ty_adt_def() == Some(adt), + GenericArgKind::Lifetime(_) | GenericArgKind::Const(_) => false, + }) +} + +/// Walks into `ty` and returns `true` if any inner type is an instance of the given type, or adt +/// constructor of the same type. +/// +/// This method also recurses into opaque type predicates, so call it with `impl Trait` and `U` +/// will also return `true`. +pub fn contains_ty_adt_constructor_opaque<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>, needle: Ty<'tcx>) -> bool { + fn contains_ty_adt_constructor_opaque_inner<'tcx>( + cx: &LateContext<'tcx>, + ty: Ty<'tcx>, + needle: Ty<'tcx>, + seen: &mut FxHashSet, + ) -> bool { + ty.walk().any(|inner| match inner.unpack() { + GenericArgKind::Type(inner_ty) => { + if inner_ty == needle { + return true; + } + + if inner_ty.ty_adt_def() == needle.ty_adt_def() { + return true; + } + + if let ty::Alias(ty::Opaque, AliasTy { def_id, .. }) = *inner_ty.kind() { + if !seen.insert(def_id) { + return false; + } + + for (predicate, _span) in cx.tcx.explicit_item_super_predicates(def_id).iter_identity_copied() { + match predicate.kind().skip_binder() { + // For `impl Trait`, it will register a predicate of `T: Trait`, so we go through + // and check substitutions to find `U`. + ty::ClauseKind::Trait(trait_predicate) => { + if trait_predicate + .trait_ref + .args + .types() + .skip(1) // Skip the implicit `Self` generic parameter + .any(|ty| contains_ty_adt_constructor_opaque_inner(cx, ty, needle, seen)) + { + return true; + } + }, + // For `impl Trait`, it will register a predicate of `::Assoc = U`, + // so we check the term for `U`. + ty::ClauseKind::Projection(projection_predicate) => { + if let ty::TermKind::Ty(ty) = projection_predicate.term.unpack() { + if contains_ty_adt_constructor_opaque_inner(cx, ty, needle, seen) { + return true; + } + }; + }, + _ => (), + } + } + } + + false + }, + GenericArgKind::Lifetime(_) | GenericArgKind::Const(_) => false, + }) + } + + // A hash set to ensure that the same opaque type (`impl Trait` in RPIT or TAIT) is not + // visited twice. + let mut seen = FxHashSet::default(); + contains_ty_adt_constructor_opaque_inner(cx, ty, needle, &mut seen) +} + +/// Resolves `::Item` for `T` +/// Do not invoke without first verifying that the type implements `Iterator` +pub fn get_iterator_item_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option> { + cx.tcx + .get_diagnostic_item(sym::Iterator) + .and_then(|iter_did| cx.get_associated_type(ty, iter_did, "Item")) +} + +/// Get the diagnostic name of a type, e.g. `sym::HashMap`. To check if a type +/// implements a trait marked with a diagnostic item use [`implements_trait`]. +/// +/// For a further exploitation what diagnostic items are see [diagnostic items] in +/// rustc-dev-guide. +/// +/// [Diagnostic Items]: https://rustc-dev-guide.rust-lang.org/diagnostics/diagnostic-items.html +pub fn get_type_diagnostic_name(cx: &LateContext<'_>, ty: Ty<'_>) -> Option { + match ty.kind() { + ty::Adt(adt, _) => cx.tcx.get_diagnostic_name(adt.did()), + _ => None, + } +} + +/// Returns true if `ty` is a type on which calling `Clone` through a function instead of +/// as a method, such as `Arc::clone()` is considered idiomatic. +/// +/// Lints should avoid suggesting to replace instances of `ty::Clone()` by `.clone()` for objects +/// of those types. +pub fn should_call_clone_as_function(cx: &LateContext<'_>, ty: Ty<'_>) -> bool { + matches!( + get_type_diagnostic_name(cx, ty), + Some(sym::Arc | sym::ArcWeak | sym::Rc | sym::RcWeak) + ) +} + +/// Returns true if ty has `iter` or `iter_mut` methods +pub fn has_iter_method(cx: &LateContext<'_>, probably_ref_ty: Ty<'_>) -> Option { + // FIXME: instead of this hard-coded list, we should check if `::iter` + // exists and has the desired signature. Unfortunately FnCtxt is not exported + // so we can't use its `lookup_method` method. + let into_iter_collections: &[Symbol] = &[ + sym::Vec, + sym::Option, + sym::Result, + sym::BTreeMap, + sym::BTreeSet, + sym::VecDeque, + sym::LinkedList, + sym::BinaryHeap, + sym::HashSet, + sym::HashMap, + sym::PathBuf, + sym::Path, + sym::Receiver, + ]; + + let ty_to_check = match probably_ref_ty.kind() { + ty::Ref(_, ty_to_check, _) => *ty_to_check, + _ => probably_ref_ty, + }; + + let def_id = match ty_to_check.kind() { + ty::Array(..) => return Some(sym::array), + ty::Slice(..) => return Some(sym::slice), + ty::Adt(adt, _) => adt.did(), + _ => return None, + }; + + for &name in into_iter_collections { + if cx.tcx.is_diagnostic_item(name, def_id) { + return Some(cx.tcx.item_name(def_id)); + } + } + None +} + +/// Checks whether a type implements a trait. +/// The function returns false in case the type contains an inference variable. +/// +/// See: +/// * [`get_trait_def_id`](super::get_trait_def_id) to get a trait [`DefId`]. +/// * [Common tools for writing lints] for an example how to use this function and other options. +/// +/// [Common tools for writing lints]: https://github.com/rust-lang/rust-clippy/blob/master/book/src/development/common_tools_writing_lints.md#checking-if-a-type-implements-a-specific-trait +pub fn implements_trait<'tcx>( + cx: &LateContext<'tcx>, + ty: Ty<'tcx>, + trait_id: DefId, + args: &[GenericArg<'tcx>], +) -> bool { + implements_trait_with_env_from_iter( + cx.tcx, + cx.typing_env(), + ty, + trait_id, + None, + args.iter().map(|&x| Some(x)), + ) +} + +/// Same as `implements_trait` but allows using a `ParamEnv` different from the lint context. +/// +/// The `callee_id` argument is used to determine whether this is a function call in a `const fn` +/// environment, used for checking const traits. +pub fn implements_trait_with_env<'tcx>( + tcx: TyCtxt<'tcx>, + typing_env: ty::TypingEnv<'tcx>, + ty: Ty<'tcx>, + trait_id: DefId, + callee_id: Option, + args: &[GenericArg<'tcx>], +) -> bool { + implements_trait_with_env_from_iter(tcx, typing_env, ty, trait_id, callee_id, args.iter().map(|&x| Some(x))) +} + +/// Same as `implements_trait_from_env` but takes the arguments as an iterator. +pub fn implements_trait_with_env_from_iter<'tcx>( + tcx: TyCtxt<'tcx>, + typing_env: ty::TypingEnv<'tcx>, + ty: Ty<'tcx>, + trait_id: DefId, + callee_id: Option, + args: impl IntoIterator>>>, +) -> bool { + // Clippy shouldn't have infer types + assert!(!ty.has_infer()); + + // If a `callee_id` is passed, then we assert that it is a body owner + // through calling `body_owner_kind`, which would panic if the callee + // does not have a body. + if let Some(callee_id) = callee_id { + let _ = tcx.hir().body_owner_kind(callee_id); + } + + let ty = tcx.erase_regions(ty); + if ty.has_escaping_bound_vars() { + return false; + } + + let (infcx, param_env) = tcx.infer_ctxt().build_with_typing_env(typing_env); + let args = args + .into_iter() + .map(|arg| arg.into().unwrap_or_else(|| infcx.next_ty_var(DUMMY_SP).into())) + .collect::>(); + + let trait_ref = TraitRef::new(tcx, trait_id, [GenericArg::from(ty)].into_iter().chain(args)); + + debug_assert_matches!( + tcx.def_kind(trait_id), + DefKind::Trait | DefKind::TraitAlias, + "`DefId` must belong to a trait or trait alias" + ); + #[cfg(debug_assertions)] + assert_generic_args_match(tcx, trait_id, trait_ref.args); + + let obligation = Obligation { + cause: ObligationCause::dummy(), + param_env, + recursion_depth: 0, + predicate: trait_ref.upcast(tcx), + }; + infcx + .evaluate_obligation(&obligation) + .is_ok_and(EvaluationResult::must_apply_modulo_regions) +} + +/// Checks whether this type implements `Drop`. +pub fn has_drop<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { + match ty.ty_adt_def() { + Some(def) => def.has_dtor(cx.tcx), + None => false, + } +} + +// Returns whether the type has #[must_use] attribute +pub fn is_must_use_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { + match ty.kind() { + ty::Adt(adt, _) => cx.tcx.has_attr(adt.did(), sym::must_use), + ty::Foreign(did) => cx.tcx.has_attr(*did, sym::must_use), + ty::Slice(ty) | ty::Array(ty, _) | ty::RawPtr(ty, _) | ty::Ref(_, ty, _) => { + // for the Array case we don't need to care for the len == 0 case + // because we don't want to lint functions returning empty arrays + is_must_use_ty(cx, *ty) + }, + ty::Tuple(args) => args.iter().any(|ty| is_must_use_ty(cx, ty)), + ty::Alias(ty::Opaque, AliasTy { def_id, .. }) => { + for (predicate, _) in cx.tcx.explicit_item_super_predicates(def_id).skip_binder() { + if let ty::ClauseKind::Trait(trait_predicate) = predicate.kind().skip_binder() { + if cx.tcx.has_attr(trait_predicate.trait_ref.def_id, sym::must_use) { + return true; + } + } + } + false + }, + ty::Dynamic(binder, _, _) => { + for predicate in *binder { + if let ty::ExistentialPredicate::Trait(ref trait_ref) = predicate.skip_binder() { + if cx.tcx.has_attr(trait_ref.def_id, sym::must_use) { + return true; + } + } + } + false + }, + _ => false, + } +} + +// FIXME: Per https://doc.rust-lang.org/nightly/nightly-rustc/rustc_trait_selection/infer/at/struct.At.html#method.normalize +// this function can be removed once the `normalize` method does not panic when normalization does +// not succeed +/// Checks if `Ty` is normalizable. This function is useful +/// to avoid crashes on `layout_of`. +pub fn is_normalizable<'tcx>(cx: &LateContext<'tcx>, param_env: ParamEnv<'tcx>, ty: Ty<'tcx>) -> bool { + is_normalizable_helper(cx, param_env, ty, &mut FxHashMap::default()) +} + +fn is_normalizable_helper<'tcx>( + cx: &LateContext<'tcx>, + param_env: ParamEnv<'tcx>, + ty: Ty<'tcx>, + cache: &mut FxHashMap, bool>, +) -> bool { + if let Some(&cached_result) = cache.get(&ty) { + return cached_result; + } + // prevent recursive loops, false-negative is better than endless loop leading to stack overflow + cache.insert(ty, false); + let infcx = cx.tcx.infer_ctxt().build(cx.typing_mode()); + let cause = ObligationCause::dummy(); + let result = if infcx.at(&cause, param_env).query_normalize(ty).is_ok() { + match ty.kind() { + ty::Adt(def, args) => def.variants().iter().all(|variant| { + variant + .fields + .iter() + .all(|field| is_normalizable_helper(cx, param_env, field.ty(cx.tcx, args), cache)) + }), + _ => ty.walk().all(|generic_arg| match generic_arg.unpack() { + GenericArgKind::Type(inner_ty) if inner_ty != ty => { + is_normalizable_helper(cx, param_env, inner_ty, cache) + }, + _ => true, // if inner_ty == ty, we've already checked it + }), + } + } else { + false + }; + cache.insert(ty, result); + result +} + +/// Returns `true` if the given type is a non aggregate primitive (a `bool` or `char`, any +/// integer or floating-point number type). +/// +/// For checking aggregation of primitive types (e.g. tuples and slices of primitive type) see +/// `is_recursively_primitive_type` +pub fn is_non_aggregate_primitive_type(ty: Ty<'_>) -> bool { + matches!(ty.kind(), ty::Bool | ty::Char | ty::Int(_) | ty::Uint(_) | ty::Float(_)) +} + +/// Returns `true` if the given type is a primitive (a `bool` or `char`, any integer or +/// floating-point number type, a `str`, or an array, slice, or tuple of those types). +pub fn is_recursively_primitive_type(ty: Ty<'_>) -> bool { + match *ty.kind() { + ty::Bool | ty::Char | ty::Int(_) | ty::Uint(_) | ty::Float(_) | ty::Str => true, + ty::Ref(_, inner, _) if inner.is_str() => true, + ty::Array(inner_type, _) | ty::Slice(inner_type) => is_recursively_primitive_type(inner_type), + ty::Tuple(inner_types) => inner_types.iter().all(is_recursively_primitive_type), + _ => false, + } +} + +/// Checks if the type is a reference equals to a diagnostic item +pub fn is_type_ref_to_diagnostic_item(cx: &LateContext<'_>, ty: Ty<'_>, diag_item: Symbol) -> bool { + match ty.kind() { + ty::Ref(_, ref_ty, _) => match ref_ty.kind() { + ty::Adt(adt, _) => cx.tcx.is_diagnostic_item(diag_item, adt.did()), + _ => false, + }, + _ => false, + } +} + +/// Checks if the type is equal to a diagnostic item. To check if a type implements a +/// trait marked with a diagnostic item use [`implements_trait`]. +/// +/// For a further exploitation what diagnostic items are see [diagnostic items] in +/// rustc-dev-guide. +/// +/// --- +/// +/// If you change the signature, remember to update the internal lint `MatchTypeOnDiagItem` +/// +/// [Diagnostic Items]: https://rustc-dev-guide.rust-lang.org/diagnostics/diagnostic-items.html +pub fn is_type_diagnostic_item(cx: &LateContext<'_>, ty: Ty<'_>, diag_item: Symbol) -> bool { + match ty.kind() { + ty::Adt(adt, _) => cx.tcx.is_diagnostic_item(diag_item, adt.did()), + _ => false, + } +} + +/// Checks if the type is equal to a lang item. +/// +/// Returns `false` if the `LangItem` is not defined. +pub fn is_type_lang_item(cx: &LateContext<'_>, ty: Ty<'_>, lang_item: LangItem) -> bool { + match ty.kind() { + ty::Adt(adt, _) => cx.tcx.lang_items().get(lang_item) == Some(adt.did()), + _ => false, + } +} + +/// Return `true` if the passed `typ` is `isize` or `usize`. +pub fn is_isize_or_usize(typ: Ty<'_>) -> bool { + matches!(typ.kind(), ty::Int(IntTy::Isize) | ty::Uint(UintTy::Usize)) +} + +/// Checks if type is struct, enum or union type with the given def path. +/// +/// If the type is a diagnostic item, use `is_type_diagnostic_item` instead. +/// If you change the signature, remember to update the internal lint `MatchTypeOnDiagItem` +pub fn match_type(cx: &LateContext<'_>, ty: Ty<'_>, path: &[&str]) -> bool { + match ty.kind() { + ty::Adt(adt, _) => match_def_path(cx, adt.did(), path), + _ => false, + } +} + +/// Checks if the drop order for a type matters. +/// +/// Some std types implement drop solely to deallocate memory. For these types, and composites +/// containing them, changing the drop order won't result in any observable side effects. +pub fn needs_ordered_drop<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { + fn needs_ordered_drop_inner<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>, seen: &mut FxHashSet>) -> bool { + if !seen.insert(ty) { + return false; + } + if !ty.has_significant_drop(cx.tcx, cx.typing_env()) { + false + } + // Check for std types which implement drop, but only for memory allocation. + else if is_type_lang_item(cx, ty, LangItem::OwnedBox) + || matches!( + get_type_diagnostic_name(cx, ty), + Some(sym::HashSet | sym::Rc | sym::Arc | sym::cstring_type | sym::RcWeak | sym::ArcWeak) + ) + { + // Check all of the generic arguments. + if let ty::Adt(_, subs) = ty.kind() { + subs.types().any(|ty| needs_ordered_drop_inner(cx, ty, seen)) + } else { + true + } + } else if !cx + .tcx + .lang_items() + .drop_trait() + .is_some_and(|id| implements_trait(cx, ty, id, &[])) + { + // This type doesn't implement drop, so no side effects here. + // Check if any component type has any. + match ty.kind() { + ty::Tuple(fields) => fields.iter().any(|ty| needs_ordered_drop_inner(cx, ty, seen)), + ty::Array(ty, _) => needs_ordered_drop_inner(cx, *ty, seen), + ty::Adt(adt, subs) => adt + .all_fields() + .map(|f| f.ty(cx.tcx, subs)) + .any(|ty| needs_ordered_drop_inner(cx, ty, seen)), + _ => true, + } + } else { + true + } + } + + needs_ordered_drop_inner(cx, ty, &mut FxHashSet::default()) +} + +/// Peels off all references on the type. Returns the underlying type, the number of references +/// removed, and whether the pointer is ultimately mutable or not. +pub fn peel_mid_ty_refs_is_mutable(ty: Ty<'_>) -> (Ty<'_>, usize, Mutability) { + fn f(ty: Ty<'_>, count: usize, mutability: Mutability) -> (Ty<'_>, usize, Mutability) { + match ty.kind() { + ty::Ref(_, ty, Mutability::Mut) => f(*ty, count + 1, mutability), + ty::Ref(_, ty, Mutability::Not) => f(*ty, count + 1, Mutability::Not), + _ => (ty, count, mutability), + } + } + f(ty, 0, Mutability::Mut) +} + +/// Returns `true` if the given type is an `unsafe` function. +pub fn type_is_unsafe_function<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { + match ty.kind() { + ty::FnDef(..) | ty::FnPtr(..) => ty.fn_sig(cx.tcx).safety() == Safety::Unsafe, + _ => false, + } +} + +/// Returns the base type for HIR references and pointers. +pub fn walk_ptrs_hir_ty<'tcx>(ty: &'tcx hir::Ty<'tcx>) -> &'tcx hir::Ty<'tcx> { + match ty.kind { + TyKind::Ptr(ref mut_ty) | TyKind::Ref(_, ref mut_ty) => walk_ptrs_hir_ty(mut_ty.ty), + _ => ty, + } +} + +/// Returns the base type for references and raw pointers, and count reference +/// depth. +pub fn walk_ptrs_ty_depth(ty: Ty<'_>) -> (Ty<'_>, usize) { + fn inner(ty: Ty<'_>, depth: usize) -> (Ty<'_>, usize) { + match ty.kind() { + ty::Ref(_, ty, _) => inner(*ty, depth + 1), + _ => (ty, depth), + } + } + inner(ty, 0) +} + +/// Returns `true` if types `a` and `b` are same types having same `Const` generic args, +/// otherwise returns `false` +pub fn same_type_and_consts<'tcx>(a: Ty<'tcx>, b: Ty<'tcx>) -> bool { + match (&a.kind(), &b.kind()) { + (&ty::Adt(did_a, args_a), &ty::Adt(did_b, args_b)) => { + if did_a != did_b { + return false; + } + + args_a + .iter() + .zip(args_b.iter()) + .all(|(arg_a, arg_b)| match (arg_a.unpack(), arg_b.unpack()) { + (GenericArgKind::Const(inner_a), GenericArgKind::Const(inner_b)) => inner_a == inner_b, + (GenericArgKind::Type(type_a), GenericArgKind::Type(type_b)) => { + same_type_and_consts(type_a, type_b) + }, + _ => true, + }) + }, + _ => a == b, + } +} + +/// Checks if a given type looks safe to be uninitialized. +pub fn is_uninit_value_valid_for_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { + let typing_env = cx.typing_env().with_post_analysis_normalized(cx.tcx); + cx.tcx + .check_validity_requirement((ValidityRequirement::Uninit, typing_env.as_query_input(ty))) + .unwrap_or_else(|_| is_uninit_value_valid_for_ty_fallback(cx, ty)) +} + +/// A fallback for polymorphic types, which are not supported by `check_validity_requirement`. +fn is_uninit_value_valid_for_ty_fallback<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { + match *ty.kind() { + // The array length may be polymorphic, let's try the inner type. + ty::Array(component, _) => is_uninit_value_valid_for_ty(cx, component), + // Peek through tuples and try their fallbacks. + ty::Tuple(types) => types.iter().all(|ty| is_uninit_value_valid_for_ty(cx, ty)), + // Unions are always fine right now. + // This includes MaybeUninit, the main way people use uninitialized memory. + ty::Adt(adt, _) if adt.is_union() => true, + // Types (e.g. `UnsafeCell>`) that recursively contain only types that can be uninit + // can themselves be uninit too. + // This purposefully ignores enums as they may have a discriminant that can't be uninit. + ty::Adt(adt, args) if adt.is_struct() => adt + .all_fields() + .all(|field| is_uninit_value_valid_for_ty(cx, field.ty(cx.tcx, args))), + // For the rest, conservatively assume that they cannot be uninit. + _ => false, + } +} + +/// Gets an iterator over all predicates which apply to the given item. +pub fn all_predicates_of(tcx: TyCtxt<'_>, id: DefId) -> impl Iterator, Span)> { + let mut next_id = Some(id); + iter::from_fn(move || { + next_id.take().map(|id| { + let preds = tcx.predicates_of(id); + next_id = preds.parent; + preds.predicates.iter() + }) + }) + .flatten() +} + +/// A signature for a function like type. +#[derive(Clone, Copy)] +pub enum ExprFnSig<'tcx> { + Sig(Binder<'tcx, FnSig<'tcx>>, Option), + Closure(Option<&'tcx FnDecl<'tcx>>, Binder<'tcx, FnSig<'tcx>>), + Trait(Binder<'tcx, Ty<'tcx>>, Option>>, Option), +} +impl<'tcx> ExprFnSig<'tcx> { + /// Gets the argument type at the given offset. This will return `None` when the index is out of + /// bounds only for variadic functions, otherwise this will panic. + pub fn input(self, i: usize) -> Option>> { + match self { + Self::Sig(sig, _) => { + if sig.c_variadic() { + sig.inputs().map_bound(|inputs| inputs.get(i).copied()).transpose() + } else { + Some(sig.input(i)) + } + }, + Self::Closure(_, sig) => Some(sig.input(0).map_bound(|ty| ty.tuple_fields()[i])), + Self::Trait(inputs, _, _) => Some(inputs.map_bound(|ty| ty.tuple_fields()[i])), + } + } + + /// Gets the argument type at the given offset. For closures this will also get the type as + /// written. This will return `None` when the index is out of bounds only for variadic + /// functions, otherwise this will panic. + pub fn input_with_hir(self, i: usize) -> Option<(Option<&'tcx hir::Ty<'tcx>>, Binder<'tcx, Ty<'tcx>>)> { + match self { + Self::Sig(sig, _) => { + if sig.c_variadic() { + sig.inputs() + .map_bound(|inputs| inputs.get(i).copied()) + .transpose() + .map(|arg| (None, arg)) + } else { + Some((None, sig.input(i))) + } + }, + Self::Closure(decl, sig) => Some(( + decl.and_then(|decl| decl.inputs.get(i)), + sig.input(0).map_bound(|ty| ty.tuple_fields()[i]), + )), + Self::Trait(inputs, _, _) => Some((None, inputs.map_bound(|ty| ty.tuple_fields()[i]))), + } + } + + /// Gets the result type, if one could be found. Note that the result type of a trait may not be + /// specified. + pub fn output(self) -> Option>> { + match self { + Self::Sig(sig, _) | Self::Closure(_, sig) => Some(sig.output()), + Self::Trait(_, output, _) => output, + } + } + + pub fn predicates_id(&self) -> Option { + if let ExprFnSig::Sig(_, id) | ExprFnSig::Trait(_, _, id) = *self { + id + } else { + None + } + } +} + +/// If the expression is function like, get the signature for it. +pub fn expr_sig<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'_>) -> Option> { + if let Res::Def(DefKind::Fn | DefKind::Ctor(_, CtorKind::Fn) | DefKind::AssocFn, id) = path_res(cx, expr) { + Some(ExprFnSig::Sig(cx.tcx.fn_sig(id).instantiate_identity(), Some(id))) + } else { + ty_sig(cx, cx.typeck_results().expr_ty_adjusted(expr).peel_refs()) + } +} + +/// If the type is function like, get the signature for it. +pub fn ty_sig<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option> { + if let Some(boxed_ty) = ty.boxed_ty() { + return ty_sig(cx, boxed_ty); + } + match *ty.kind() { + ty::Closure(id, subs) => { + let decl = id + .as_local() + .and_then(|id| cx.tcx.hir().fn_decl_by_hir_id(cx.tcx.local_def_id_to_hir_id(id))); + Some(ExprFnSig::Closure(decl, subs.as_closure().sig())) + }, + ty::FnDef(id, subs) => Some(ExprFnSig::Sig(cx.tcx.fn_sig(id).instantiate(cx.tcx, subs), Some(id))), + ty::Alias(ty::Opaque, AliasTy { def_id, args, .. }) => sig_from_bounds( + cx, + ty, + cx.tcx.item_super_predicates(def_id).iter_instantiated(cx.tcx, args), + cx.tcx.opt_parent(def_id), + ), + ty::FnPtr(sig_tys, hdr) => Some(ExprFnSig::Sig(sig_tys.with(hdr), None)), + ty::Dynamic(bounds, _, _) => { + let lang_items = cx.tcx.lang_items(); + match bounds.principal() { + Some(bound) + if Some(bound.def_id()) == lang_items.fn_trait() + || Some(bound.def_id()) == lang_items.fn_once_trait() + || Some(bound.def_id()) == lang_items.fn_mut_trait() => + { + let output = bounds + .projection_bounds() + .find(|p| lang_items.fn_once_output().is_some_and(|id| id == p.item_def_id())) + .map(|p| p.map_bound(|p| p.term.expect_type())); + Some(ExprFnSig::Trait(bound.map_bound(|b| b.args.type_at(0)), output, None)) + }, + _ => None, + } + }, + ty::Alias(ty::Projection, proj) => match cx.tcx.try_normalize_erasing_regions(cx.typing_env(), ty) { + Ok(normalized_ty) if normalized_ty != ty => ty_sig(cx, normalized_ty), + _ => sig_for_projection(cx, proj).or_else(|| sig_from_bounds(cx, ty, cx.param_env.caller_bounds(), None)), + }, + ty::Param(_) => sig_from_bounds(cx, ty, cx.param_env.caller_bounds(), None), + _ => None, + } +} + +fn sig_from_bounds<'tcx>( + cx: &LateContext<'tcx>, + ty: Ty<'tcx>, + predicates: impl IntoIterator>, + predicates_id: Option, +) -> Option> { + let mut inputs = None; + let mut output = None; + let lang_items = cx.tcx.lang_items(); + + for pred in predicates { + match pred.kind().skip_binder() { + ty::ClauseKind::Trait(p) + if (lang_items.fn_trait() == Some(p.def_id()) + || lang_items.fn_mut_trait() == Some(p.def_id()) + || lang_items.fn_once_trait() == Some(p.def_id())) + && p.self_ty() == ty => + { + let i = pred.kind().rebind(p.trait_ref.args.type_at(1)); + if inputs.is_some_and(|inputs| i != inputs) { + // Multiple different fn trait impls. Is this even allowed? + return None; + } + inputs = Some(i); + }, + ty::ClauseKind::Projection(p) + if Some(p.projection_term.def_id) == lang_items.fn_once_output() + && p.projection_term.self_ty() == ty => + { + if output.is_some() { + // Multiple different fn trait impls. Is this even allowed? + return None; + } + output = Some(pred.kind().rebind(p.term.expect_type())); + }, + _ => (), + } + } + + inputs.map(|ty| ExprFnSig::Trait(ty, output, predicates_id)) +} + +fn sig_for_projection<'tcx>(cx: &LateContext<'tcx>, ty: AliasTy<'tcx>) -> Option> { + let mut inputs = None; + let mut output = None; + let lang_items = cx.tcx.lang_items(); + + for (pred, _) in cx + .tcx + .explicit_item_bounds(ty.def_id) + .iter_instantiated_copied(cx.tcx, ty.args) + { + match pred.kind().skip_binder() { + ty::ClauseKind::Trait(p) + if (lang_items.fn_trait() == Some(p.def_id()) + || lang_items.fn_mut_trait() == Some(p.def_id()) + || lang_items.fn_once_trait() == Some(p.def_id())) => + { + let i = pred.kind().rebind(p.trait_ref.args.type_at(1)); + + if inputs.is_some_and(|inputs| inputs != i) { + // Multiple different fn trait impls. Is this even allowed? + return None; + } + inputs = Some(i); + }, + ty::ClauseKind::Projection(p) if Some(p.projection_term.def_id) == lang_items.fn_once_output() => { + if output.is_some() { + // Multiple different fn trait impls. Is this even allowed? + return None; + } + output = pred.kind().rebind(p.term.as_type()).transpose(); + }, + _ => (), + } + } + + inputs.map(|ty| ExprFnSig::Trait(ty, output, None)) +} + +#[derive(Clone, Copy)] +pub enum EnumValue { + Unsigned(u128), + Signed(i128), +} +impl core::ops::Add for EnumValue { + type Output = Self; + fn add(self, n: u32) -> Self::Output { + match self { + Self::Unsigned(x) => Self::Unsigned(x + u128::from(n)), + Self::Signed(x) => Self::Signed(x + i128::from(n)), + } + } +} + +/// Attempts to read the given constant as though it were an enum value. +pub fn read_explicit_enum_value(tcx: TyCtxt<'_>, id: DefId) -> Option { + if let Ok(ConstValue::Scalar(Scalar::Int(value))) = tcx.const_eval_poly(id) { + match tcx.type_of(id).instantiate_identity().kind() { + ty::Int(_) => Some(EnumValue::Signed(value.to_int(value.size()))), + ty::Uint(_) => Some(EnumValue::Unsigned(value.to_uint(value.size()))), + _ => None, + } + } else { + None + } +} + +/// Gets the value of the given variant. +pub fn get_discriminant_value(tcx: TyCtxt<'_>, adt: AdtDef<'_>, i: VariantIdx) -> EnumValue { + let variant = &adt.variant(i); + match variant.discr { + VariantDiscr::Explicit(id) => read_explicit_enum_value(tcx, id).unwrap(), + VariantDiscr::Relative(x) => match adt.variant((i.as_usize() - x as usize).into()).discr { + VariantDiscr::Explicit(id) => read_explicit_enum_value(tcx, id).unwrap() + x, + VariantDiscr::Relative(_) => EnumValue::Unsigned(x.into()), + }, + } +} + +/// Check if the given type is either `core::ffi::c_void`, `std::os::raw::c_void`, or one of the +/// platform specific `libc::::c_void` types in libc. +pub fn is_c_void(cx: &LateContext<'_>, ty: Ty<'_>) -> bool { + if let ty::Adt(adt, _) = ty.kind() + && let &[krate, .., name] = &*cx.get_def_path(adt.did()) + && let sym::libc | sym::core | sym::std = krate + && name == sym::c_void + { + true + } else { + false + } +} + +pub fn for_each_top_level_late_bound_region( + ty: Ty<'_>, + f: impl FnMut(BoundRegion) -> ControlFlow, +) -> ControlFlow { + struct V { + index: u32, + f: F, + } + impl<'tcx, B, F: FnMut(BoundRegion) -> ControlFlow> TypeVisitor> for V { + type Result = ControlFlow; + fn visit_region(&mut self, r: Region<'tcx>) -> Self::Result { + if let RegionKind::ReBound(idx, bound) = r.kind() + && idx.as_u32() == self.index + { + (self.f)(bound) + } else { + ControlFlow::Continue(()) + } + } + fn visit_binder>>(&mut self, t: &Binder<'tcx, T>) -> Self::Result { + self.index += 1; + let res = t.super_visit_with(self); + self.index -= 1; + res + } + } + ty.visit_with(&mut V { index: 0, f }) +} + +pub struct AdtVariantInfo { + pub ind: usize, + pub size: u64, + + /// (ind, size) + pub fields_size: Vec<(usize, u64)>, +} + +impl AdtVariantInfo { + /// Returns ADT variants ordered by size + pub fn new<'tcx>(cx: &LateContext<'tcx>, adt: AdtDef<'tcx>, subst: GenericArgsRef<'tcx>) -> Vec { + let mut variants_size = adt + .variants() + .iter() + .enumerate() + .map(|(i, variant)| { + let mut fields_size = variant + .fields + .iter() + .enumerate() + .map(|(i, f)| (i, approx_ty_size(cx, f.ty(cx.tcx, subst)))) + .collect::>(); + fields_size.sort_by(|(_, a_size), (_, b_size)| (a_size.cmp(b_size))); + + Self { + ind: i, + size: fields_size.iter().map(|(_, size)| size).sum(), + fields_size, + } + }) + .collect::>(); + variants_size.sort_by(|a, b| (b.size.cmp(&a.size))); + variants_size + } +} + +/// Gets the struct or enum variant from the given `Res` +pub fn adt_and_variant_of_res<'tcx>(cx: &LateContext<'tcx>, res: Res) -> Option<(AdtDef<'tcx>, &'tcx VariantDef)> { + match res { + Res::Def(DefKind::Struct, id) => { + let adt = cx.tcx.adt_def(id); + Some((adt, adt.non_enum_variant())) + }, + Res::Def(DefKind::Variant, id) => { + let adt = cx.tcx.adt_def(cx.tcx.parent(id)); + Some((adt, adt.variant_with_id(id))) + }, + Res::Def(DefKind::Ctor(CtorOf::Struct, _), id) => { + let adt = cx.tcx.adt_def(cx.tcx.parent(id)); + Some((adt, adt.non_enum_variant())) + }, + Res::Def(DefKind::Ctor(CtorOf::Variant, _), id) => { + let var_id = cx.tcx.parent(id); + let adt = cx.tcx.adt_def(cx.tcx.parent(var_id)); + Some((adt, adt.variant_with_id(var_id))) + }, + Res::SelfCtor(id) => { + let adt = cx.tcx.type_of(id).instantiate_identity().ty_adt_def().unwrap(); + Some((adt, adt.non_enum_variant())) + }, + _ => None, + } +} + +/// Comes up with an "at least" guesstimate for the type's size, not taking into +/// account the layout of type parameters. +pub fn approx_ty_size<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> u64 { + use rustc_middle::ty::layout::LayoutOf; + if !is_normalizable(cx, cx.param_env, ty) { + return 0; + } + match (cx.layout_of(ty).map(|layout| layout.size.bytes()), ty.kind()) { + (Ok(size), _) => size, + (Err(_), ty::Tuple(list)) => list.iter().map(|t| approx_ty_size(cx, t)).sum(), + (Err(_), ty::Array(t, n)) => n.try_to_target_usize(cx.tcx).unwrap_or_default() * approx_ty_size(cx, *t), + (Err(_), ty::Adt(def, subst)) if def.is_struct() => def + .variants() + .iter() + .map(|v| { + v.fields + .iter() + .map(|field| approx_ty_size(cx, field.ty(cx.tcx, subst))) + .sum::() + }) + .sum(), + (Err(_), ty::Adt(def, subst)) if def.is_enum() => def + .variants() + .iter() + .map(|v| { + v.fields + .iter() + .map(|field| approx_ty_size(cx, field.ty(cx.tcx, subst))) + .sum::() + }) + .max() + .unwrap_or_default(), + (Err(_), ty::Adt(def, subst)) if def.is_union() => def + .variants() + .iter() + .map(|v| { + v.fields + .iter() + .map(|field| approx_ty_size(cx, field.ty(cx.tcx, subst))) + .max() + .unwrap_or_default() + }) + .max() + .unwrap_or_default(), + (Err(_), _) => 0, + } +} + +/// Asserts that the given arguments match the generic parameters of the given item. +#[allow(dead_code)] +fn assert_generic_args_match<'tcx>(tcx: TyCtxt<'tcx>, did: DefId, args: &[GenericArg<'tcx>]) { + let g = tcx.generics_of(did); + let parent = g.parent.map(|did| tcx.generics_of(did)); + let count = g.parent_count + g.own_params.len(); + let params = parent + .map_or([].as_slice(), |p| p.own_params.as_slice()) + .iter() + .chain(&g.own_params) + .map(|x| &x.kind); + + assert!( + count == args.len(), + "wrong number of arguments for `{did:?}`: expected `{count}`, found {}\n\ + note: the expected arguments are: `[{}]`\n\ + the given arguments are: `{args:#?}`", + args.len(), + params.clone().map(GenericParamDefKind::descr).format(", "), + ); + + if let Some((idx, (param, arg))) = + params + .clone() + .zip(args.iter().map(|&x| x.unpack())) + .enumerate() + .find(|(_, (param, arg))| match (param, arg) { + (GenericParamDefKind::Lifetime, GenericArgKind::Lifetime(_)) + | (GenericParamDefKind::Type { .. }, GenericArgKind::Type(_)) + | (GenericParamDefKind::Const { .. }, GenericArgKind::Const(_)) => false, + ( + GenericParamDefKind::Lifetime + | GenericParamDefKind::Type { .. } + | GenericParamDefKind::Const { .. }, + _, + ) => true, + }) + { + panic!( + "incorrect argument for `{did:?}` at index `{idx}`: expected a {}, found `{arg:?}`\n\ + note: the expected arguments are `[{}]`\n\ + the given arguments are `{args:#?}`", + param.descr(), + params.clone().map(GenericParamDefKind::descr).format(", "), + ); + } +} + +/// Returns whether `ty` is never-like; i.e., `!` (never) or an enum with zero variants. +pub fn is_never_like(ty: Ty<'_>) -> bool { + ty.is_never() || (ty.is_enum() && ty.ty_adt_def().is_some_and(|def| def.variants().is_empty())) +} + +/// Makes the projection type for the named associated type in the given impl or trait impl. +/// +/// This function is for associated types which are "known" to exist, and as such, will only return +/// `None` when debug assertions are disabled in order to prevent ICE's. With debug assertions +/// enabled this will check that the named associated type exists, the correct number of +/// arguments are given, and that the correct kinds of arguments are given (lifetime, +/// constant or type). This will not check if type normalization would succeed. +pub fn make_projection<'tcx>( + tcx: TyCtxt<'tcx>, + container_id: DefId, + assoc_ty: Symbol, + args: impl IntoIterator>>, +) -> Option> { + fn helper<'tcx>( + tcx: TyCtxt<'tcx>, + container_id: DefId, + assoc_ty: Symbol, + args: GenericArgsRef<'tcx>, + ) -> Option> { + let Some(assoc_item) = tcx.associated_items(container_id).find_by_name_and_kind( + tcx, + Ident::with_dummy_span(assoc_ty), + AssocKind::Type, + container_id, + ) else { + debug_assert!(false, "type `{assoc_ty}` not found in `{container_id:?}`"); + return None; + }; + #[cfg(debug_assertions)] + assert_generic_args_match(tcx, assoc_item.def_id, args); + + Some(AliasTy::new_from_args(tcx, assoc_item.def_id, args)) + } + helper( + tcx, + container_id, + assoc_ty, + tcx.mk_args_from_iter(args.into_iter().map(Into::into)), + ) +} + +/// Normalizes the named associated type in the given impl or trait impl. +/// +/// This function is for associated types which are "known" to be valid with the given +/// arguments, and as such, will only return `None` when debug assertions are disabled in order +/// to prevent ICE's. With debug assertions enabled this will check that type normalization +/// succeeds as well as everything checked by `make_projection`. +pub fn make_normalized_projection<'tcx>( + tcx: TyCtxt<'tcx>, + typing_env: ty::TypingEnv<'tcx>, + container_id: DefId, + assoc_ty: Symbol, + args: impl IntoIterator>>, +) -> Option> { + fn helper<'tcx>(tcx: TyCtxt<'tcx>, typing_env: ty::TypingEnv<'tcx>, ty: AliasTy<'tcx>) -> Option> { + #[cfg(debug_assertions)] + if let Some((i, arg)) = ty + .args + .iter() + .enumerate() + .find(|(_, arg)| arg.has_escaping_bound_vars()) + { + debug_assert!( + false, + "args contain late-bound region at index `{i}` which can't be normalized.\n\ + use `TyCtxt::instantiate_bound_regions_with_erased`\n\ + note: arg is `{arg:#?}`", + ); + return None; + } + match tcx.try_normalize_erasing_regions(typing_env, Ty::new_projection_from_args(tcx, ty.def_id, ty.args)) { + Ok(ty) => Some(ty), + Err(e) => { + debug_assert!(false, "failed to normalize type `{ty}`: {e:#?}"); + None + }, + } + } + helper(tcx, typing_env, make_projection(tcx, container_id, assoc_ty, args)?) +} + +/// Helper to check if given type has inner mutability such as [`std::cell::Cell`] or +/// [`std::cell::RefCell`]. +#[derive(Default, Debug)] +pub struct InteriorMut<'tcx> { + ignored_def_ids: FxHashSet, + ignore_pointers: bool, + tys: FxHashMap, Option<&'tcx ty::List>>>, +} + +impl<'tcx> InteriorMut<'tcx> { + pub fn new(tcx: TyCtxt<'tcx>, ignore_interior_mutability: &[String]) -> Self { + let ignored_def_ids = ignore_interior_mutability + .iter() + .flat_map(|ignored_ty| { + let path: Vec<&str> = ignored_ty.split("::").collect(); + def_path_def_ids(tcx, path.as_slice()) + }) + .collect(); + + Self { + ignored_def_ids, + ..Self::default() + } + } + + pub fn without_pointers(tcx: TyCtxt<'tcx>, ignore_interior_mutability: &[String]) -> Self { + Self { + ignore_pointers: true, + ..Self::new(tcx, ignore_interior_mutability) + } + } + + /// Check if given type has interior mutability such as [`std::cell::Cell`] or + /// [`std::cell::RefCell`] etc. and if it does, returns a chain of types that causes + /// this type to be interior mutable + pub fn interior_mut_ty_chain(&mut self, cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option<&'tcx ty::List>> { + match self.tys.entry(ty) { + Entry::Occupied(o) => return *o.get(), + // Temporarily insert a `None` to break cycles + Entry::Vacant(v) => v.insert(None), + }; + + let chain = match *ty.kind() { + ty::RawPtr(inner_ty, _) if !self.ignore_pointers => self.interior_mut_ty_chain(cx, inner_ty), + ty::Ref(_, inner_ty, _) | ty::Slice(inner_ty) => self.interior_mut_ty_chain(cx, inner_ty), + ty::Array(inner_ty, size) if size.try_to_target_usize(cx.tcx) != Some(0) => { + self.interior_mut_ty_chain(cx, inner_ty) + }, + ty::Tuple(fields) => fields.iter().find_map(|ty| self.interior_mut_ty_chain(cx, ty)), + ty::Adt(def, _) if def.is_unsafe_cell() => Some(ty::List::empty()), + ty::Adt(def, args) => { + let is_std_collection = matches!( + cx.tcx.get_diagnostic_name(def.did()), + Some( + sym::LinkedList + | sym::Vec + | sym::VecDeque + | sym::BTreeMap + | sym::BTreeSet + | sym::HashMap + | sym::HashSet + | sym::Arc + | sym::Rc + ) + ); + + if is_std_collection || def.is_box() { + // Include the types from std collections that are behind pointers internally + args.types().find_map(|ty| self.interior_mut_ty_chain(cx, ty)) + } else if self.ignored_def_ids.contains(&def.did()) || def.is_phantom_data() { + None + } else { + def.all_fields() + .find_map(|f| self.interior_mut_ty_chain(cx, f.ty(cx.tcx, args))) + } + }, + _ => None, + }; + + chain.map(|chain| { + let list = cx.tcx.mk_type_list_from_iter(chain.iter().chain([ty])); + self.tys.insert(ty, Some(list)); + list + }) + } + + /// Check if given type has interior mutability such as [`std::cell::Cell`] or + /// [`std::cell::RefCell`] etc. + pub fn is_interior_mut_ty(&mut self, cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { + self.interior_mut_ty_chain(cx, ty).is_some() + } +} + +pub fn make_normalized_projection_with_regions<'tcx>( + tcx: TyCtxt<'tcx>, + typing_env: ty::TypingEnv<'tcx>, + container_id: DefId, + assoc_ty: Symbol, + args: impl IntoIterator>>, +) -> Option> { + fn helper<'tcx>(tcx: TyCtxt<'tcx>, typing_env: ty::TypingEnv<'tcx>, ty: AliasTy<'tcx>) -> Option> { + #[cfg(debug_assertions)] + if let Some((i, arg)) = ty + .args + .iter() + .enumerate() + .find(|(_, arg)| arg.has_escaping_bound_vars()) + { + debug_assert!( + false, + "args contain late-bound region at index `{i}` which can't be normalized.\n\ + use `TyCtxt::instantiate_bound_regions_with_erased`\n\ + note: arg is `{arg:#?}`", + ); + return None; + } + let cause = ObligationCause::dummy(); + let (infcx, param_env) = tcx.infer_ctxt().build_with_typing_env(typing_env); + match infcx + .at(&cause, param_env) + .query_normalize(Ty::new_projection_from_args(tcx, ty.def_id, ty.args)) + { + Ok(ty) => Some(ty.value), + Err(e) => { + debug_assert!(false, "failed to normalize type `{ty}`: {e:#?}"); + None + }, + } + } + helper(tcx, typing_env, make_projection(tcx, container_id, assoc_ty, args)?) +} + +pub fn normalize_with_regions<'tcx>(tcx: TyCtxt<'tcx>, typing_env: ty::TypingEnv<'tcx>, ty: Ty<'tcx>) -> Ty<'tcx> { + let cause = ObligationCause::dummy(); + let (infcx, param_env) = tcx.infer_ctxt().build_with_typing_env(typing_env); + infcx + .at(&cause, param_env) + .query_normalize(ty) + .map_or(ty, |ty| ty.value) +} + +/// Checks if the type is `core::mem::ManuallyDrop<_>` +pub fn is_manually_drop(ty: Ty<'_>) -> bool { + ty.ty_adt_def().is_some_and(AdtDef::is_manually_drop) +} + +/// Returns the deref chain of a type, starting with the type itself. +pub fn deref_chain<'cx, 'tcx>(cx: &'cx LateContext<'tcx>, ty: Ty<'tcx>) -> impl Iterator> + 'cx { + iter::successors(Some(ty), |&ty| { + if let Some(deref_did) = cx.tcx.lang_items().deref_trait() + && implements_trait(cx, ty, deref_did, &[]) + { + make_normalized_projection(cx.tcx, cx.typing_env(), deref_did, sym::Target, [ty]) + } else { + None + } + }) +} + +/// Checks if a Ty<'_> has some inherent method Symbol. +/// +/// This does not look for impls in the type's `Deref::Target` type. +/// If you need this, you should wrap this call in `clippy_utils::ty::deref_chain().any(...)`. +pub fn get_adt_inherent_method<'a>(cx: &'a LateContext<'_>, ty: Ty<'_>, method_name: Symbol) -> Option<&'a AssocItem> { + if let Some(ty_did) = ty.ty_adt_def().map(AdtDef::did) { + cx.tcx.inherent_impls(ty_did).iter().find_map(|&did| { + cx.tcx + .associated_items(did) + .filter_by_name_unhygienic(method_name) + .next() + .filter(|item| item.kind == AssocKind::Fn) + }) + } else { + None + } +} + +/// Get's the type of a field by name. +pub fn get_field_by_name<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, name: Symbol) -> Option> { + match *ty.kind() { + ty::Adt(def, args) if def.is_union() || def.is_struct() => def + .non_enum_variant() + .fields + .iter() + .find(|f| f.name == name) + .map(|f| f.ty(tcx, args)), + ty::Tuple(args) => name.as_str().parse::().ok().and_then(|i| args.get(i).copied()), + _ => None, + } +} -- cgit 1.4.1-3-g733a5 From 132954736780231605ac80ae6657e01a7d1280dd Mon Sep 17 00:00:00 2001 From: y21 <30553356+y21@users.noreply.github.com> Date: Fri, 29 Nov 2024 17:30:11 +0000 Subject: add targetted help messages to `zombie_processes` diagnostic --- clippy_lints/src/zombie_processes.rs | 275 +++++++++++++++++++++++------------ tests/ui/zombie_processes.rs | 41 +++++- tests/ui/zombie_processes.stderr | 85 +++++++++-- 3 files changed, 293 insertions(+), 108 deletions(-) diff --git a/clippy_lints/src/zombie_processes.rs b/clippy_lints/src/zombie_processes.rs index 4a13c10166f..a702e0785a9 100644 --- a/clippy_lints/src/zombie_processes.rs +++ b/clippy_lints/src/zombie_processes.rs @@ -2,13 +2,14 @@ use ControlFlow::{Break, Continue}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::{fn_def_id, get_enclosing_block, match_any_def_paths, match_def_path, path_to_local_id, paths}; use rustc_ast::Mutability; +use rustc_ast::visit::visit_opt; use rustc_errors::Applicability; use rustc_hir::intravisit::{Visitor, walk_block, walk_expr, walk_local}; use rustc_hir::{Expr, ExprKind, HirId, LetStmt, Node, PatKind, Stmt, StmtKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::hir::nested_filter; use rustc_session::declare_lint_pass; -use rustc_span::sym; +use rustc_span::{Span, sym}; use std::ops::ControlFlow; declare_clippy_lint! { @@ -22,6 +23,17 @@ declare_clippy_lint! { /// which can eventually lead to resource exhaustion, so it's recommended to call `wait()` in long-running applications. /// Such processes are called "zombie processes". /// + /// To reduce the rate of false positives, if the spawned process is assigned to a binding, the lint actually works the other way around; it + /// conservatively checks that all uses of a variable definitely don't call `wait()` and only then emits a warning. + /// For that reason, a seemingly unrelated use can get called out as calling `wait()` in help messages. + /// + /// ### Control flow + /// If a `wait()` call exists in an if/then block but not in the else block (or there is no else block), + /// then this still gets linted as not calling `wait()` in all code paths. + /// Likewise, when early-returning from the function, `wait()` calls that appear after the return expression + /// are also not accepted. + /// In other words, the `wait()` call must be unconditionally reachable after the spawn expression. + /// /// ### Example /// ```rust /// use std::process::Command; @@ -53,26 +65,47 @@ impl<'tcx> LateLintPass<'tcx> for ZombieProcesses { if let PatKind::Binding(_, local_id, ..) = local.pat.kind && let Some(enclosing_block) = get_enclosing_block(cx, expr.hir_id) => { - let mut vis = WaitFinder::WalkUpTo(cx, local_id); - - // If it does have a `wait()` call, we're done. Don't lint. - if let Break(BreakReason::WaitFound) = walk_block(&mut vis, enclosing_block) { - return; - } + let mut vis = WaitFinder { + cx, + local_id, + state: VisitorState::WalkUpToLocal, + early_return: None, + missing_wait_branch: None, + }; + + let res = ( + walk_block(&mut vis, enclosing_block), + vis.missing_wait_branch, + vis.early_return, + ); + + let cause = match res { + (Break(MaybeWait(wait_span)), _, Some(return_span)) => { + Cause::EarlyReturn { wait_span, return_span } + }, + (Break(MaybeWait(_)), _, None) => return, + (Continue(()), None, _) => Cause::NeverWait, + (Continue(()), Some(MissingWaitBranch::MissingElse { if_span, wait_span }), _) => { + Cause::MissingElse { wait_span, if_span } + }, + (Continue(()), Some(MissingWaitBranch::MissingWaitInBranch { branch_span, wait_span }), _) => { + Cause::MissingWaitInBranch { wait_span, branch_span } + }, + }; // Don't emit a suggestion since the binding is used later - check(cx, expr, false); + check(cx, expr, cause, false); }, Node::LetStmt(&LetStmt { pat, .. }) if let PatKind::Wild = pat.kind => { // `let _ = child;`, also dropped immediately without `wait()`ing - check(cx, expr, true); + check(cx, expr, Cause::NeverWait, true); }, Node::Stmt(&Stmt { kind: StmtKind::Semi(_), .. }) => { // Immediately dropped. E.g. `std::process::Command::new("echo").spawn().unwrap();` - check(cx, expr, true); + check(cx, expr, Cause::NeverWait, true); }, _ => {}, } @@ -80,21 +113,10 @@ impl<'tcx> LateLintPass<'tcx> for ZombieProcesses { } } -enum BreakReason { - WaitFound, - EarlyReturn, -} +struct MaybeWait(Span); /// A visitor responsible for finding a `wait()` call on a local variable. /// -/// Conditional `wait()` calls are assumed to not call wait: -/// ```ignore -/// let mut c = Command::new("").spawn().unwrap(); -/// if true { -/// c.wait(); -/// } -/// ``` -/// /// Note that this visitor does NOT explicitly look for `wait()` calls directly, but rather does the /// inverse -- checking if all uses of the local are either: /// - a field access (`child.{stderr,stdin,stdout}`) @@ -104,43 +126,50 @@ enum BreakReason { /// /// None of these are sufficient to prevent zombie processes. /// Doing it like this means more FNs, but FNs are better than FPs. -/// -/// `return` expressions, conditional or not, short-circuit the visitor because -/// if a `wait()` call hadn't been found at that point, it might never reach one at a later point: -/// ```ignore -/// let mut c = Command::new("").spawn().unwrap(); -/// if true { -/// return; // Break(BreakReason::EarlyReturn) -/// } -/// c.wait(); // this might not be reachable -/// ``` -enum WaitFinder<'a, 'tcx> { - WalkUpTo(&'a LateContext<'tcx>, HirId), - Found(&'a LateContext<'tcx>, HirId), +struct WaitFinder<'a, 'tcx> { + cx: &'a LateContext<'tcx>, + local_id: HirId, + state: VisitorState, + early_return: Option, + // When joining two if branches where one of them doesn't call `wait()`, stores its span for more targetted help + // messages + missing_wait_branch: Option, +} + +#[derive(PartialEq)] +enum VisitorState { + WalkUpToLocal, + LocalFound, +} + +#[derive(Copy, Clone)] +enum MissingWaitBranch { + MissingElse { if_span: Span, wait_span: Span }, + MissingWaitInBranch { branch_span: Span, wait_span: Span }, } impl<'tcx> Visitor<'tcx> for WaitFinder<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; - type Result = ControlFlow; + type Result = ControlFlow; fn visit_local(&mut self, l: &'tcx LetStmt<'tcx>) -> Self::Result { - if let Self::WalkUpTo(cx, local_id) = *self + if self.state == VisitorState::WalkUpToLocal && let PatKind::Binding(_, pat_id, ..) = l.pat.kind - && local_id == pat_id + && self.local_id == pat_id { - *self = Self::Found(cx, local_id); + self.state = VisitorState::LocalFound; } walk_local(self, l) } fn visit_expr(&mut self, ex: &'tcx Expr<'tcx>) -> Self::Result { - let Self::Found(cx, local_id) = *self else { + if self.state != VisitorState::LocalFound { return walk_expr(self, ex); - }; + } - if path_to_local_id(ex, local_id) { - match cx.tcx.parent_hir_node(ex.hir_id) { + if path_to_local_id(ex, self.local_id) { + match self.cx.tcx.parent_hir_node(ex.hir_id) { Node::Stmt(Stmt { kind: StmtKind::Semi(_), .. @@ -148,29 +177,33 @@ impl<'tcx> Visitor<'tcx> for WaitFinder<'_, 'tcx> { Node::Expr(expr) if let ExprKind::Field(..) = expr.kind => {}, Node::Expr(expr) if let ExprKind::AddrOf(_, Mutability::Not, _) = expr.kind => {}, Node::Expr(expr) - if let Some(fn_did) = fn_def_id(cx, expr) - && match_any_def_paths(cx, fn_did, &[&paths::CHILD_ID, &paths::CHILD_KILL]).is_some() => {}, + if let Some(fn_did) = fn_def_id(self.cx, expr) + && match_any_def_paths(self.cx, fn_did, &[&paths::CHILD_ID, &paths::CHILD_KILL]).is_some() => { + }, // Conservatively assume that all other kinds of nodes call `.wait()` somehow. - _ => return Break(BreakReason::WaitFound), + _ => return Break(MaybeWait(ex.span)), } } else { match ex.kind { - ExprKind::Ret(..) => return Break(BreakReason::EarlyReturn), + ExprKind::Ret(e) => { + visit_opt!(self, visit_expr, e); + if self.early_return.is_none() { + self.early_return = Some(ex.span); + } + + return Continue(()); + }, ExprKind::If(cond, then, None) => { walk_expr(self, cond)?; - // A `wait()` call in an if expression with no else is not enough: - // - // let c = spawn(); - // if true { - // c.wait(); - // } - // - // This might not call wait(). However, early returns are propagated, - // because they might lead to a later wait() not being called. - if let Break(BreakReason::EarlyReturn) = walk_expr(self, then) { - return Break(BreakReason::EarlyReturn); + if let Break(MaybeWait(wait_span)) = walk_expr(self, then) + && self.missing_wait_branch.is_none() + { + self.missing_wait_branch = Some(MissingWaitBranch::MissingElse { + if_span: ex.span, + wait_span, + }); } return Continue(()); @@ -179,22 +212,31 @@ impl<'tcx> Visitor<'tcx> for WaitFinder<'_, 'tcx> { ExprKind::If(cond, then, Some(else_)) => { walk_expr(self, cond)?; - #[expect(clippy::unnested_or_patterns)] match (walk_expr(self, then), walk_expr(self, else_)) { - (Continue(()), Continue(())) + (Continue(()), Continue(())) => {}, // `wait()` in one branch but nothing in the other does not count - | (Continue(()), Break(BreakReason::WaitFound)) - | (Break(BreakReason::WaitFound), Continue(())) => {}, - - // `wait()` in both branches is ok - (Break(BreakReason::WaitFound), Break(BreakReason::WaitFound)) => { - return Break(BreakReason::WaitFound); + (Continue(()), Break(MaybeWait(wait_span))) => { + if self.missing_wait_branch.is_none() { + self.missing_wait_branch = Some(MissingWaitBranch::MissingWaitInBranch { + branch_span: ex.span.shrink_to_lo().to(then.span), + wait_span, + }); + } + }, + (Break(MaybeWait(wait_span)), Continue(())) => { + if self.missing_wait_branch.is_none() { + self.missing_wait_branch = Some(MissingWaitBranch::MissingWaitInBranch { + branch_span: then.span.shrink_to_hi().to(else_.span), + wait_span, + }); + } }, - // Propagate early returns in either branch - (Break(BreakReason::EarlyReturn), _) | (_, Break(BreakReason::EarlyReturn)) => { - return Break(BreakReason::EarlyReturn); + // `wait()` in both branches is ok + (Break(MaybeWait(wait_span)), Break(MaybeWait(_))) => { + self.missing_wait_branch = None; + return Break(MaybeWait(wait_span)); }, } @@ -208,8 +250,40 @@ impl<'tcx> Visitor<'tcx> for WaitFinder<'_, 'tcx> { } fn nested_visit_map(&mut self) -> Self::Map { - let (Self::Found(cx, _) | Self::WalkUpTo(cx, _)) = self; - cx.tcx.hir() + self.cx.tcx.hir() + } +} + +#[derive(Copy, Clone)] +enum Cause { + /// No call to `wait()` at all + NeverWait, + /// `wait()` call exists, but not all code paths definitely lead to one due to + /// an early return + EarlyReturn { wait_span: Span, return_span: Span }, + /// `wait()` call exists in some if branches but not this one + MissingWaitInBranch { wait_span: Span, branch_span: Span }, + /// `wait()` call exists in an if/then branch but it is missing an else block + MissingElse { wait_span: Span, if_span: Span }, +} + +impl Cause { + fn message(self) -> &'static str { + match self { + Cause::NeverWait => "spawned process is never `wait()`ed on", + Cause::EarlyReturn { .. } | Cause::MissingWaitInBranch { .. } | Cause::MissingElse { .. } => { + "spawned process is not `wait()`ed on in all code paths" + }, + } + } + + fn fallback_help(self) -> &'static str { + match self { + Cause::NeverWait => "consider calling `.wait()`", + Cause::EarlyReturn { .. } | Cause::MissingWaitInBranch { .. } | Cause::MissingElse { .. } => { + "consider calling `.wait()` in all code paths" + }, + } } } @@ -220,7 +294,7 @@ impl<'tcx> Visitor<'tcx> for WaitFinder<'_, 'tcx> { /// `let _ = ;`. /// /// This checks if the program doesn't unconditionally exit after the spawn expression. -fn check<'tcx>(cx: &LateContext<'tcx>, spawn_expr: &'tcx Expr<'tcx>, emit_suggestion: bool) { +fn check<'tcx>(cx: &LateContext<'tcx>, spawn_expr: &'tcx Expr<'tcx>, cause: Cause, emit_suggestion: bool) { let Some(block) = get_enclosing_block(cx, spawn_expr.hir_id) else { return; }; @@ -234,27 +308,46 @@ fn check<'tcx>(cx: &LateContext<'tcx>, spawn_expr: &'tcx Expr<'tcx>, emit_sugges return; } - span_lint_and_then( - cx, - ZOMBIE_PROCESSES, - spawn_expr.span, - "spawned process is never `wait()`ed on", - |diag| { - if emit_suggestion { - diag.span_suggestion( - spawn_expr.span.shrink_to_hi(), - "try", - ".wait()", - Applicability::MaybeIncorrect, + span_lint_and_then(cx, ZOMBIE_PROCESSES, spawn_expr.span, cause.message(), |diag| { + match cause { + Cause::EarlyReturn { wait_span, return_span } => { + diag.span_note( + return_span, + "no `wait()` call exists on the code path to this early return", ); - } else { - diag.note("consider calling `.wait()`"); - } + diag.span_note( + wait_span, + "`wait()` call exists, but it is unreachable due to the early return", + ); + }, + Cause::MissingWaitInBranch { wait_span, branch_span } => { + diag.span_note(branch_span, "`wait()` is not called in this if branch"); + diag.span_note(wait_span, "`wait()` is called in the other branch"); + }, + Cause::MissingElse { if_span, wait_span } => { + diag.span_note( + if_span, + "this if expression has a `wait()` call, but it is missing an else block", + ); + diag.span_note(wait_span, "`wait()` called here"); + }, + Cause::NeverWait => {}, + } + + if emit_suggestion { + diag.span_suggestion( + spawn_expr.span.shrink_to_hi(), + "try", + ".wait()", + Applicability::MaybeIncorrect, + ); + } else { + diag.help(cause.fallback_help()); + } - diag.note("not doing so might leave behind zombie processes") - .note("see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning"); - }, - ); + diag.note("not doing so might leave behind zombie processes") + .note("see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning"); + }); } /// Checks if the given expression exits the process. diff --git a/tests/ui/zombie_processes.rs b/tests/ui/zombie_processes.rs index b41bcce3f7f..6f0d2760a86 100644 --- a/tests/ui/zombie_processes.rs +++ b/tests/ui/zombie_processes.rs @@ -1,7 +1,7 @@ #![warn(clippy::zombie_processes)] -#![allow(clippy::if_same_then_else, clippy::ifs_same_cond)] +#![allow(clippy::if_same_then_else, clippy::ifs_same_cond, clippy::needless_return)] -use std::process::{Child, Command}; +use std::process::{Child, Command, ExitStatus}; fn main() { { @@ -12,7 +12,7 @@ fn main() { { let mut x = Command::new("").spawn().unwrap(); - //~^ ERROR: spawned process is never `wait()`ed on + //~^ zombie_processes x.kill(); x.id(); } @@ -39,7 +39,7 @@ fn main() { } { let mut x = Command::new("").spawn().unwrap(); - //~^ ERROR: spawned process is never `wait()`ed on + //~^ zombie_processes let v = &x; // (allow shared refs is fine because one cannot call `.wait()` through that) } @@ -64,14 +64,14 @@ fn main() { // It should assume that it might not exit and still lint { let mut x = Command::new("").spawn().unwrap(); - //~^ ERROR: spawned process is never `wait()`ed on + //~^ zombie_processes if true { std::process::exit(0); } } { let mut x = Command::new("").spawn().unwrap(); - //~^ ERROR: spawned process is never `wait()`ed on + //~^ zombie_processes if true { while false {} // Calling `exit()` after leaving a while loop should still be linted. @@ -97,7 +97,7 @@ fn main() { { let mut x = Command::new("").spawn().unwrap(); - //~^ ERROR: spawned process is never `wait()`ed on + //~^ zombie_processes if true { return; } @@ -106,12 +106,32 @@ fn main() { { let mut x = Command::new("").spawn().unwrap(); - //~^ ERROR: spawned process is never `wait()`ed on + //~^ zombie_processes if true { x.wait().unwrap(); } } + { + let mut x = Command::new("").spawn().unwrap(); + //~^ zombie_processes + if true { + x.wait().unwrap(); + } else { + // this else block exists to test the other help message + } + } + + { + let mut x = Command::new("").spawn().unwrap(); + //~^ zombie_processes + if true { + // this else block exists to test the other help message + } else { + x.wait().unwrap(); + } + } + { let mut x = Command::new("").spawn().unwrap(); if true { @@ -143,3 +163,8 @@ fn main() { fn process_child(c: Child) { todo!() } + +fn return_wait() -> ExitStatus { + let mut x = Command::new("").spawn().unwrap(); + return x.wait().unwrap(); +} diff --git a/tests/ui/zombie_processes.stderr b/tests/ui/zombie_processes.stderr index eec821a4c8f..afc518c60db 100644 --- a/tests/ui/zombie_processes.stderr +++ b/tests/ui/zombie_processes.stderr @@ -4,7 +4,7 @@ error: spawned process is never `wait()`ed on LL | let mut x = Command::new("").spawn().unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | - = note: consider calling `.wait()` + = help: consider calling `.wait()` = note: not doing so might leave behind zombie processes = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning = note: `-D clippy::zombie-processes` implied by `-D warnings` @@ -16,7 +16,7 @@ error: spawned process is never `wait()`ed on LL | let mut x = Command::new("").spawn().unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | - = note: consider calling `.wait()` + = help: consider calling `.wait()` = note: not doing so might leave behind zombie processes = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning @@ -26,7 +26,7 @@ error: spawned process is never `wait()`ed on LL | let mut x = Command::new("").spawn().unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | - = note: consider calling `.wait()` + = help: consider calling `.wait()` = note: not doing so might leave behind zombie processes = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning @@ -36,29 +36,96 @@ error: spawned process is never `wait()`ed on LL | let mut x = Command::new("").spawn().unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | - = note: consider calling `.wait()` + = help: consider calling `.wait()` = note: not doing so might leave behind zombie processes = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning -error: spawned process is never `wait()`ed on +error: spawned process is not `wait()`ed on in all code paths --> tests/ui/zombie_processes.rs:99:21 | LL | let mut x = Command::new("").spawn().unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | - = note: consider calling `.wait()` +note: no `wait()` call exists on the code path to this early return + --> tests/ui/zombie_processes.rs:102:13 + | +LL | return; + | ^^^^^^ +note: `wait()` call exists, but it is unreachable due to the early return + --> tests/ui/zombie_processes.rs:104:9 + | +LL | x.wait().unwrap(); + | ^ + = help: consider calling `.wait()` in all code paths = note: not doing so might leave behind zombie processes = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning -error: spawned process is never `wait()`ed on +error: spawned process is not `wait()`ed on in all code paths --> tests/ui/zombie_processes.rs:108:21 | LL | let mut x = Command::new("").spawn().unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | - = note: consider calling `.wait()` +note: this if expression has a `wait()` call, but it is missing an else block + --> tests/ui/zombie_processes.rs:110:9 + | +LL | / if true { +LL | | x.wait().unwrap(); +LL | | } + | |_________^ +note: `wait()` called here + --> tests/ui/zombie_processes.rs:111:13 + | +LL | x.wait().unwrap(); + | ^ + = help: consider calling `.wait()` in all code paths + = note: not doing so might leave behind zombie processes + = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning + +error: spawned process is not `wait()`ed on in all code paths + --> tests/ui/zombie_processes.rs:116:21 + | +LL | let mut x = Command::new("").spawn().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: `wait()` is not called in this if branch + --> tests/ui/zombie_processes.rs:120:10 + | +LL | } else { + | __________^ +LL | | // this else block exists to test the other help message +LL | | } + | |_________^ +note: `wait()` is called in the other branch + --> tests/ui/zombie_processes.rs:119:13 + | +LL | x.wait().unwrap(); + | ^ + = help: consider calling `.wait()` in all code paths + = note: not doing so might leave behind zombie processes + = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning + +error: spawned process is not `wait()`ed on in all code paths + --> tests/ui/zombie_processes.rs:126:21 + | +LL | let mut x = Command::new("").spawn().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: `wait()` is not called in this if branch + --> tests/ui/zombie_processes.rs:128:9 + | +LL | / if true { +LL | | // this else block exists to test the other help message +LL | | } else { + | |_________^ +note: `wait()` is called in the other branch + --> tests/ui/zombie_processes.rs:131:13 + | +LL | x.wait().unwrap(); + | ^ + = help: consider calling `.wait()` in all code paths = note: not doing so might leave behind zombie processes = note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning -error: aborting due to 6 previous errors +error: aborting due to 8 previous errors -- cgit 1.4.1-3-g733a5 From 120b84125ec545a6233eaa2224829510992f6c98 Mon Sep 17 00:00:00 2001 From: Natsume-Neko Date: Sat, 30 Nov 2024 14:26:47 +0800 Subject: Modified the tests so that if we place wrong parentheses we will get a different result --- tests/ui/precedence.fixed | 8 ++++---- tests/ui/precedence.rs | 8 ++++---- tests/ui/precedence.stderr | 16 ++++++++-------- 3 files changed, 16 insertions(+), 16 deletions(-) diff --git a/tests/ui/precedence.fixed b/tests/ui/precedence.fixed index 01e8c3fb0bd..9864dd2550b 100644 --- a/tests/ui/precedence.fixed +++ b/tests/ui/precedence.fixed @@ -20,10 +20,10 @@ fn main() { 1 ^ (1 - 1); 3 | (2 - 1); 3 & (5 - 2); - 12 & (0xF000 << 4); - 12 & (0xF000 >> 4); - (12 << 4) ^ 0xF000; - (12 << 4) | 0xF000; + 0x0F00 & (0x00F0 << 4); + 0x0F00 & (0xF000 >> 4); + (0x0F00 << 1) ^ 3; + (0x0F00 << 1) | 2; let b = 3; trip!(b * 8); diff --git a/tests/ui/precedence.rs b/tests/ui/precedence.rs index 9937d96592e..9ef5c43833f 100644 --- a/tests/ui/precedence.rs +++ b/tests/ui/precedence.rs @@ -20,10 +20,10 @@ fn main() { 1 ^ 1 - 1; 3 | 2 - 1; 3 & 5 - 2; - 12 & 0xF000 << 4; - 12 & 0xF000 >> 4; - 12 << 4 ^ 0xF000; - 12 << 4 | 0xF000; + 0x0F00 & 0x00F0 << 4; + 0x0F00 & 0xF000 >> 4; + 0x0F00 << 1 ^ 3; + 0x0F00 << 1 | 2; let b = 3; trip!(b * 8); diff --git a/tests/ui/precedence.stderr b/tests/ui/precedence.stderr index b1226e97aeb..0d63e827d66 100644 --- a/tests/ui/precedence.stderr +++ b/tests/ui/precedence.stderr @@ -46,26 +46,26 @@ LL | 3 & 5 - 2; error: operator precedence can trip the unwary --> tests/ui/precedence.rs:23:5 | -LL | 12 & 0xF000 << 4; - | ^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `12 & (0xF000 << 4)` +LL | 0x0F00 & 0x00F0 << 4; + | ^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `0x0F00 & (0x00F0 << 4)` error: operator precedence can trip the unwary --> tests/ui/precedence.rs:24:5 | -LL | 12 & 0xF000 >> 4; - | ^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `12 & (0xF000 >> 4)` +LL | 0x0F00 & 0xF000 >> 4; + | ^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `0x0F00 & (0xF000 >> 4)` error: operator precedence can trip the unwary --> tests/ui/precedence.rs:25:5 | -LL | 12 << 4 ^ 0xF000; - | ^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `(12 << 4) ^ 0xF000` +LL | 0x0F00 << 1 ^ 3; + | ^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `(0x0F00 << 1) ^ 3` error: operator precedence can trip the unwary --> tests/ui/precedence.rs:26:5 | -LL | 12 << 4 | 0xF000; - | ^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `(12 << 4) | 0xF000` +LL | 0x0F00 << 1 | 2; + | ^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `(0x0F00 << 1) | 2` error: aborting due to 11 previous errors -- cgit 1.4.1-3-g733a5 From a6a693601937f3b0bf468a03ba4234832def38d1 Mon Sep 17 00:00:00 2001 From: Dominik Stolz Date: Thu, 28 Nov 2024 17:33:22 +0100 Subject: Remove hir::ArrayLen, introduce ConstArgKind::Infer Remove Node::ArrayLenInfer --- clippy_lints/src/large_stack_arrays.rs | 6 +++--- clippy_lints/src/utils/author.rs | 12 +++-------- clippy_lints/src/zero_repeat_side_effects.rs | 5 ++--- clippy_utils/src/hir_utils.rs | 30 +++++++++------------------- clippy_utils/src/lib.rs | 6 +++--- tests/ui/author/repeat.stdout | 3 +-- 6 files changed, 21 insertions(+), 41 deletions(-) diff --git a/clippy_lints/src/large_stack_arrays.rs b/clippy_lints/src/large_stack_arrays.rs index 4ef881f11d5..46d7df6995a 100644 --- a/clippy_lints/src/large_stack_arrays.rs +++ b/clippy_lints/src/large_stack_arrays.rs @@ -5,7 +5,7 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_from_proc_macro; use clippy_utils::macros::macro_backtrace; use clippy_utils::source::snippet; -use rustc_hir::{ArrayLen, Expr, ExprKind, Item, ItemKind, Node}; +use rustc_hir::{Expr, ExprKind, Item, ItemKind, Node}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::layout::LayoutOf; use rustc_middle::ty::{self, ConstKind}; @@ -118,13 +118,13 @@ impl<'tcx> LateLintPass<'tcx> for LargeStackArrays { /// Only giving help messages if the expr does not contains macro expanded codes. fn might_be_expanded<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'tcx>) -> bool { - /// Check if the span of `ArrayLen` of a repeat expression is within the expr's span, + /// Check if the span of `ConstArg` of a repeat expression is within the expr's span, /// if not, meaning this repeat expr is definitely from some proc-macro. /// /// This is a fail-safe to a case where even the `is_from_proc_macro` is unable to determain the /// correct result. fn repeat_expr_might_be_expanded(expr: &Expr<'_>) -> bool { - let ExprKind::Repeat(_, ArrayLen::Body(len_ct)) = expr.kind else { + let ExprKind::Repeat(_, len_ct) = expr.kind else { return false; }; !expr.span.contains(len_ct.span()) diff --git a/clippy_lints/src/utils/author.rs b/clippy_lints/src/utils/author.rs index 1bf24083665..51001d374b4 100644 --- a/clippy_lints/src/utils/author.rs +++ b/clippy_lints/src/utils/author.rs @@ -3,7 +3,7 @@ use rustc_ast::LitIntType; use rustc_ast::ast::{LitFloatType, LitKind}; use rustc_data_structures::fx::FxHashMap; use rustc_hir::{ - self as hir, ArrayLen, BindingMode, CaptureBy, Closure, ClosureKind, ConstArg, ConstArgKind, CoroutineKind, + self as hir, BindingMode, CaptureBy, Closure, ClosureKind, ConstArg, ConstArgKind, CoroutineKind, ExprKind, FnRetTy, HirId, Lit, PatKind, QPath, StmtKind, TyKind, }; use rustc_lint::{LateContext, LateLintPass, LintContext}; @@ -278,6 +278,7 @@ impl<'a, 'tcx> PrintVisitor<'a, 'tcx> { chain!(self, "let ConstArgKind::Anon({anon_const}) = {const_arg}.kind"); self.body(field!(anon_const.body)); }, + ConstArgKind::Infer(..) => chain!(self, "let ConstArgKind::Infer(..) = {const_arg}.kind"), } } @@ -611,14 +612,7 @@ impl<'a, 'tcx> PrintVisitor<'a, 'tcx> { bind!(self, value, length); kind!("Repeat({value}, {length})"); self.expr(value); - match length.value { - ArrayLen::Infer(..) => chain!(self, "let ArrayLen::Infer(..) = length"), - ArrayLen::Body(const_arg) => { - bind!(self, const_arg); - chain!(self, "let ArrayLen::Body({const_arg}) = {length}"); - self.const_arg(const_arg); - }, - } + self.const_arg(length); }, ExprKind::Err(_) => kind!("Err(_)"), ExprKind::DropTemps(expr) => { diff --git a/clippy_lints/src/zero_repeat_side_effects.rs b/clippy_lints/src/zero_repeat_side_effects.rs index fdc1d06e67a..05f85650769 100644 --- a/clippy_lints/src/zero_repeat_side_effects.rs +++ b/clippy_lints/src/zero_repeat_side_effects.rs @@ -5,7 +5,7 @@ use clippy_utils::visitors::for_each_expr_without_closures; use rustc_ast::LitKind; use rustc_data_structures::packed::Pu128; use rustc_errors::Applicability; -use rustc_hir::{ArrayLen, ConstArgKind, ExprKind, Node}; +use rustc_hir::{ConstArgKind, ExprKind, Node}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::Ty; use rustc_session::declare_lint_pass; @@ -60,8 +60,7 @@ impl LateLintPass<'_> for ZeroRepeatSideEffects { // doesn't seem as confusing as `[f(); 0]`. It would also have false positives when eg. // the const item depends on `#[cfg]s` and has different values in different compilation // sessions). - else if let ExprKind::Repeat(inner_expr, length) = expr.kind - && let ArrayLen::Body(const_arg) = length + else if let ExprKind::Repeat(inner_expr, const_arg) = expr.kind && let ConstArgKind::Anon(anon_const) = const_arg.kind && let length_expr = hir_map.body(anon_const.body).value && !length_expr.span.from_expansion() diff --git a/clippy_utils/src/hir_utils.rs b/clippy_utils/src/hir_utils.rs index ea866a78d87..920562f4b93 100644 --- a/clippy_utils/src/hir_utils.rs +++ b/clippy_utils/src/hir_utils.rs @@ -7,7 +7,7 @@ use rustc_data_structures::fx::FxHasher; use rustc_hir::MatchSource::TryDesugar; use rustc_hir::def::{DefKind, Res}; use rustc_hir::{ - ArrayLen, AssocItemConstraint, BinOpKind, BindingMode, Block, BodyId, Closure, ConstArg, ConstArgKind, Expr, + AssocItemConstraint, BinOpKind, BindingMode, Block, BodyId, Closure, ConstArg, ConstArgKind, Expr, ExprField, ExprKind, FnRetTy, GenericArg, GenericArgs, HirId, HirIdMap, InlineAsmOperand, LetExpr, Lifetime, LifetimeName, Pat, PatField, PatKind, Path, PathSegment, PrimTy, QPath, Stmt, StmtKind, TraitBoundModifiers, Ty, TyKind, @@ -266,14 +266,6 @@ impl HirEqInterExpr<'_, '_, '_> { }) } - pub fn eq_array_length(&mut self, left: ArrayLen<'_>, right: ArrayLen<'_>) -> bool { - match (left, right) { - (ArrayLen::Infer(..), ArrayLen::Infer(..)) => true, - (ArrayLen::Body(l_ct), ArrayLen::Body(r_ct)) => self.eq_const_arg(l_ct, r_ct), - (_, _) => false, - } - } - pub fn eq_body(&mut self, left: BodyId, right: BodyId) -> bool { // swap out TypeckResults when hashing a body let old_maybe_typeck_results = self.inner.maybe_typeck_results.replace(( @@ -383,7 +375,7 @@ impl HirEqInterExpr<'_, '_, '_> { }, (ExprKind::Path(l), ExprKind::Path(r)) => self.eq_qpath(l, r), (&ExprKind::Repeat(le, ll), &ExprKind::Repeat(re, rl)) => { - self.eq_expr(le, re) && self.eq_array_length(ll, rl) + self.eq_expr(le, re) && self.eq_const_arg(ll, rl) }, (ExprKind::Ret(l), ExprKind::Ret(r)) => both(l.as_ref(), r.as_ref(), |l, r| self.eq_expr(l, r)), (&ExprKind::Struct(l_path, lf, ref lo), &ExprKind::Struct(r_path, rf, ref ro)) => { @@ -469,8 +461,10 @@ impl HirEqInterExpr<'_, '_, '_> { match (&left.kind, &right.kind) { (ConstArgKind::Path(l_p), ConstArgKind::Path(r_p)) => self.eq_qpath(l_p, r_p), (ConstArgKind::Anon(l_an), ConstArgKind::Anon(r_an)) => self.eq_body(l_an.body, r_an.body), + (ConstArgKind::Infer(..), ConstArgKind::Infer(..)) => true, // Use explicit match for now since ConstArg is undergoing flux. - (ConstArgKind::Path(..), ConstArgKind::Anon(..)) | (ConstArgKind::Anon(..), ConstArgKind::Path(..)) => { + (ConstArgKind::Path(..), ConstArgKind::Anon(..)) | (ConstArgKind::Anon(..), ConstArgKind::Path(..)) + | (ConstArgKind::Infer(..), _) | (_, ConstArgKind::Infer(..)) => { false }, } @@ -589,7 +583,7 @@ impl HirEqInterExpr<'_, '_, '_> { pub fn eq_ty(&mut self, left: &Ty<'_>, right: &Ty<'_>) -> bool { match (&left.kind, &right.kind) { (&TyKind::Slice(l_vec), &TyKind::Slice(r_vec)) => self.eq_ty(l_vec, r_vec), - (&TyKind::Array(lt, ll), &TyKind::Array(rt, rl)) => self.eq_ty(lt, rt) && self.eq_array_length(ll, rl), + (&TyKind::Array(lt, ll), &TyKind::Array(rt, rl)) => self.eq_ty(lt, rt) && self.eq_const_arg(ll, rl), (TyKind::Ptr(l_mut), TyKind::Ptr(r_mut)) => l_mut.mutbl == r_mut.mutbl && self.eq_ty(l_mut.ty, r_mut.ty), (TyKind::Ref(_, l_rmut), TyKind::Ref(_, r_rmut)) => { l_rmut.mutbl == r_rmut.mutbl && self.eq_ty(l_rmut.ty, r_rmut.ty) @@ -1002,7 +996,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { }, ExprKind::Repeat(e, len) => { self.hash_expr(e); - self.hash_array_length(len); + self.hash_const_arg(len); }, ExprKind::Ret(ref e) => { if let Some(e) = *e { @@ -1195,7 +1189,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { }, &TyKind::Array(ty, len) => { self.hash_ty(ty); - self.hash_array_length(len); + self.hash_const_arg(len); }, TyKind::Pat(ty, pat) => { self.hash_ty(ty); @@ -1246,13 +1240,6 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { } } - pub fn hash_array_length(&mut self, length: ArrayLen<'_>) { - match length { - ArrayLen::Infer(..) => {}, - ArrayLen::Body(ct) => self.hash_const_arg(ct), - } - } - pub fn hash_body(&mut self, body_id: BodyId) { // swap out TypeckResults when hashing a body let old_maybe_typeck_results = self.maybe_typeck_results.replace(self.cx.tcx.typeck_body(body_id)); @@ -1264,6 +1251,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { match &const_arg.kind { ConstArgKind::Path(path) => self.hash_qpath(path), ConstArgKind::Anon(anon) => self.hash_body(anon.body), + ConstArgKind::Infer(..) => {}, } } diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs index 6408cc938cb..82699211489 100644 --- a/clippy_utils/src/lib.rs +++ b/clippy_utils/src/lib.rs @@ -102,7 +102,7 @@ use rustc_hir::definitions::{DefPath, DefPathData}; use rustc_hir::hir_id::{HirIdMap, HirIdSet}; use rustc_hir::intravisit::{FnKind, Visitor, walk_expr}; use rustc_hir::{ - self as hir, Arm, ArrayLen, BindingMode, Block, BlockCheckMode, Body, ByRef, Closure, ConstArgKind, ConstContext, + self as hir, Arm, BindingMode, Block, BlockCheckMode, Body, ByRef, Closure, ConstArgKind, ConstContext, Destination, Expr, ExprField, ExprKind, FnDecl, FnRetTy, GenericArgs, HirId, Impl, ImplItem, ImplItemKind, ImplItemRef, Item, ItemKind, LangItem, LetStmt, MatchSource, Mutability, Node, OwnerId, OwnerNode, Param, Pat, PatKind, Path, PathSegment, PrimTy, QPath, Stmt, StmtKind, TraitItem, TraitItemKind, TraitItemRef, TraitRef, @@ -921,7 +921,7 @@ pub fn is_default_equivalent(cx: &LateContext<'_>, e: &Expr<'_>) -> bool { _ => false, }, ExprKind::Tup(items) | ExprKind::Array(items) => items.iter().all(|x| is_default_equivalent(cx, x)), - ExprKind::Repeat(x, ArrayLen::Body(len)) => { + ExprKind::Repeat(x, len) => { if let ConstArgKind::Anon(anon_const) = len.kind && let ExprKind::Lit(const_lit) = cx.tcx.hir().body(anon_const.body).value.kind && let LitKind::Int(v, _) = const_lit.node @@ -951,7 +951,7 @@ fn is_default_equivalent_from(cx: &LateContext<'_>, from_func: &Expr<'_>, arg: & .. }) => return sym.is_empty() && is_path_lang_item(cx, ty, LangItem::String), ExprKind::Array([]) => return is_path_diagnostic_item(cx, ty, sym::Vec), - ExprKind::Repeat(_, ArrayLen::Body(len)) => { + ExprKind::Repeat(_, len) => { if let ConstArgKind::Anon(anon_const) = len.kind && let ExprKind::Lit(const_lit) = cx.tcx.hir().body(anon_const.body).value.kind && let LitKind::Int(v, _) = const_lit.node diff --git a/tests/ui/author/repeat.stdout b/tests/ui/author/repeat.stdout index d9e3f864f12..1a608734ada 100644 --- a/tests/ui/author/repeat.stdout +++ b/tests/ui/author/repeat.stdout @@ -1,8 +1,7 @@ if let ExprKind::Repeat(value, length) = expr.kind && let ExprKind::Lit(ref lit) = value.kind && let LitKind::Int(1, LitIntType::Unsigned(UintTy::U8)) = lit.node - && let ArrayLen::Body(const_arg) = length - && let ConstArgKind::Anon(anon_const) = const_arg.kind + && let ConstArgKind::Anon(anon_const) = length.kind && expr1 = &cx.tcx.hir().body(anon_const.body).value && let ExprKind::Lit(ref lit1) = expr1.kind && let LitKind::Int(5, LitIntType::Unsuffixed) = lit1.node -- cgit 1.4.1-3-g733a5 From ce9c4f8dd14b8b5b85bf796c26cedbdd517f162f Mon Sep 17 00:00:00 2001 From: Samuel Tardieu Date: Sat, 30 Nov 2024 15:57:39 +0100 Subject: Mention `string_slice` in `indexing_slicing` documentation --- clippy_lints/src/indexing_slicing.rs | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/clippy_lints/src/indexing_slicing.rs b/clippy_lints/src/indexing_slicing.rs index ae2c3e0491f..15203b35b13 100644 --- a/clippy_lints/src/indexing_slicing.rs +++ b/clippy_lints/src/indexing_slicing.rs @@ -51,6 +51,10 @@ declare_clippy_lint! { /// There are “checked” alternatives which do not panic, and can be used with `unwrap()` to make /// an explicit panic when it is desired. /// + /// ### Limitations + /// This lint does not check for the usage of indexing or slicing on strings. These are covered + /// by the more specific `string_slice` lint. + /// /// ### Example /// ```rust,no_run /// // Vector -- cgit 1.4.1-3-g733a5 From 9a692ec8cd726b6670c353b872a5c2e73e891081 Mon Sep 17 00:00:00 2001 From: Samuel Tardieu Date: Fri, 29 Nov 2024 13:52:39 +0100 Subject: Add more cases to the `useless_conversion` lint The new cases are `x.map(f)` and `x.map_err(f)` when `f` is `Into::into` or `From::from` with the same input and output types. --- clippy_lints/src/methods/mod.rs | 1 + clippy_lints/src/useless_conversion.rs | 46 +++++++++++++++++++++++++++++++--- tests/ui/useless_conversion.fixed | 30 ++++++++++++++++++++++ tests/ui/useless_conversion.rs | 30 ++++++++++++++++++++++ tests/ui/useless_conversion.stderr | 26 ++++++++++++++++++- 5 files changed, 129 insertions(+), 4 deletions(-) diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs index 7d1d5d69c99..6c10ef6e206 100644 --- a/clippy_lints/src/methods/mod.rs +++ b/clippy_lints/src/methods/mod.rs @@ -4982,6 +4982,7 @@ impl Methods { } map_identity::check(cx, expr, recv, m_arg, name, span); manual_inspect::check(cx, expr, m_arg, name, span, &self.msrv); + crate::useless_conversion::check_function_application(cx, expr, recv, m_arg); }, ("map_or", [def, map]) => { option_map_or_none::check(cx, expr, recv, def, map); diff --git a/clippy_lints/src/useless_conversion.rs b/clippy_lints/src/useless_conversion.rs index 3b05abc546f..315410c768a 100644 --- a/clippy_lints/src/useless_conversion.rs +++ b/clippy_lints/src/useless_conversion.rs @@ -1,8 +1,10 @@ use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_sugg, span_lint_and_then}; use clippy_utils::source::{snippet, snippet_with_applicability, snippet_with_context}; -use clippy_utils::sugg::Sugg; +use clippy_utils::sugg::{DiagExt as _, Sugg}; use clippy_utils::ty::{is_copy, is_type_diagnostic_item, same_type_and_consts}; -use clippy_utils::{get_parent_expr, is_trait_method, is_ty_alias, path_to_local}; +use clippy_utils::{ + get_parent_expr, is_inherent_method_call, is_trait_item, is_trait_method, is_ty_alias, path_to_local, +}; use rustc_errors::Applicability; use rustc_hir::def_id::DefId; use rustc_hir::{BindingMode, Expr, ExprKind, HirId, MatchSource, Node, PatKind}; @@ -10,7 +12,7 @@ use rustc_infer::infer::TyCtxtInferExt; use rustc_infer::traits::Obligation; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::traits::ObligationCause; -use rustc_middle::ty::{self, EarlyBinder, GenericArg, GenericArgsRef, Ty, TypeVisitableExt}; +use rustc_middle::ty::{self, AdtDef, EarlyBinder, GenericArg, GenericArgsRef, Ty, TypeVisitableExt}; use rustc_session::impl_lint_pass; use rustc_span::{Span, sym}; use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt; @@ -382,3 +384,41 @@ impl<'tcx> LateLintPass<'tcx> for UselessConversion { } } } + +/// Check if `arg` is a `Into::into` or `From::from` applied to `receiver` to give `expr`, through a +/// higher-order mapping function. +pub fn check_function_application(cx: &LateContext<'_>, expr: &Expr<'_>, recv: &Expr<'_>, arg: &Expr<'_>) { + if has_eligible_receiver(cx, recv, expr) + && (is_trait_item(cx, arg, sym::Into) || is_trait_item(cx, arg, sym::From)) + && let ty::FnDef(_, args) = cx.typeck_results().expr_ty(arg).kind() + && let &[from_ty, to_ty] = args.into_type_list(cx.tcx).as_slice() + && same_type_and_consts(from_ty, to_ty) + { + span_lint_and_then( + cx, + USELESS_CONVERSION, + expr.span.with_lo(recv.span.hi()), + format!("useless conversion to the same type: `{from_ty}`"), + |diag| { + diag.suggest_remove_item( + cx, + expr.span.with_lo(recv.span.hi()), + "consider removing", + Applicability::MachineApplicable, + ); + }, + ); + } +} + +fn has_eligible_receiver(cx: &LateContext<'_>, recv: &Expr<'_>, expr: &Expr<'_>) -> bool { + let recv_ty = cx.typeck_results().expr_ty(recv); + if is_inherent_method_call(cx, expr) + && let Some(recv_ty_defid) = recv_ty.ty_adt_def().map(AdtDef::did) + && let Some(diag_name) = cx.tcx.get_diagnostic_name(recv_ty_defid) + && matches!(diag_name, sym::Option | sym::Result) + { + return true; + } + false +} diff --git a/tests/ui/useless_conversion.fixed b/tests/ui/useless_conversion.fixed index eff617a8016..36fc8938e87 100644 --- a/tests/ui/useless_conversion.fixed +++ b/tests/ui/useless_conversion.fixed @@ -297,3 +297,33 @@ impl From> for Foo<'b'> { Foo } } + +fn direct_application() { + let _: Result<(), std::io::Error> = test_issue_3913(); + //~^ useless_conversion + let _: Result<(), std::io::Error> = test_issue_3913(); + //~^ useless_conversion + let _: Result<(), std::io::Error> = test_issue_3913(); + //~^ useless_conversion + let _: Result<(), std::io::Error> = test_issue_3913(); + //~^ useless_conversion + + struct Absorb; + impl From<()> for Absorb { + fn from(_: ()) -> Self { + Self + } + } + impl From for Absorb { + fn from(_: std::io::Error) -> Self { + Self + } + } + + // No lint for those + let _: Result = test_issue_3913().map(Into::into); + let _: Result<(), Absorb> = test_issue_3913().map_err(Into::into); + let _: Result = test_issue_3913().map(From::from); + let _: Result<(), Absorb> = test_issue_3913().map_err(From::from); + let _: Vec = [1u32].into_iter().map(Into::into).collect(); +} diff --git a/tests/ui/useless_conversion.rs b/tests/ui/useless_conversion.rs index 64b06620789..7509b70d39c 100644 --- a/tests/ui/useless_conversion.rs +++ b/tests/ui/useless_conversion.rs @@ -297,3 +297,33 @@ impl From> for Foo<'b'> { Foo } } + +fn direct_application() { + let _: Result<(), std::io::Error> = test_issue_3913().map(Into::into); + //~^ useless_conversion + let _: Result<(), std::io::Error> = test_issue_3913().map_err(Into::into); + //~^ useless_conversion + let _: Result<(), std::io::Error> = test_issue_3913().map(From::from); + //~^ useless_conversion + let _: Result<(), std::io::Error> = test_issue_3913().map_err(From::from); + //~^ useless_conversion + + struct Absorb; + impl From<()> for Absorb { + fn from(_: ()) -> Self { + Self + } + } + impl From for Absorb { + fn from(_: std::io::Error) -> Self { + Self + } + } + + // No lint for those + let _: Result = test_issue_3913().map(Into::into); + let _: Result<(), Absorb> = test_issue_3913().map_err(Into::into); + let _: Result = test_issue_3913().map(From::from); + let _: Result<(), Absorb> = test_issue_3913().map_err(From::from); + let _: Vec = [1u32].into_iter().map(Into::into).collect(); +} diff --git a/tests/ui/useless_conversion.stderr b/tests/ui/useless_conversion.stderr index b149357bcf4..7ed42dd2080 100644 --- a/tests/ui/useless_conversion.stderr +++ b/tests/ui/useless_conversion.stderr @@ -226,5 +226,29 @@ note: this parameter accepts any `IntoIterator`, so you don't need to call `.int LL | J: IntoIterator, | ^^^^^^^^^^^^ -error: aborting due to 28 previous errors +error: useless conversion to the same type: `()` + --> tests/ui/useless_conversion.rs:302:58 + | +LL | let _: Result<(), std::io::Error> = test_issue_3913().map(Into::into); + | ^^^^^^^^^^^^^^^^ help: consider removing + +error: useless conversion to the same type: `std::io::Error` + --> tests/ui/useless_conversion.rs:304:58 + | +LL | let _: Result<(), std::io::Error> = test_issue_3913().map_err(Into::into); + | ^^^^^^^^^^^^^^^^^^^^ help: consider removing + +error: useless conversion to the same type: `()` + --> tests/ui/useless_conversion.rs:306:58 + | +LL | let _: Result<(), std::io::Error> = test_issue_3913().map(From::from); + | ^^^^^^^^^^^^^^^^ help: consider removing + +error: useless conversion to the same type: `std::io::Error` + --> tests/ui/useless_conversion.rs:308:58 + | +LL | let _: Result<(), std::io::Error> = test_issue_3913().map_err(From::from); + | ^^^^^^^^^^^^^^^^^^^^ help: consider removing + +error: aborting due to 32 previous errors -- cgit 1.4.1-3-g733a5 From 2b0e7bb4a77cf1c41c1b6b787b75cc82135c6876 Mon Sep 17 00:00:00 2001 From: Samuel Tardieu Date: Fri, 29 Nov 2024 09:57:31 +0100 Subject: Fix lifetimes elision suggestion in where clauses --- clippy_lints/src/lifetimes.rs | 6 ------ tests/ui/needless_lifetimes.fixed | 14 ++++++++++++++ tests/ui/needless_lifetimes.rs | 14 ++++++++++++++ 3 files changed, 28 insertions(+), 6 deletions(-) diff --git a/clippy_lints/src/lifetimes.rs b/clippy_lints/src/lifetimes.rs index 35b14776e59..ee2e1ee32bb 100644 --- a/clippy_lints/src/lifetimes.rs +++ b/clippy_lints/src/lifetimes.rs @@ -658,12 +658,6 @@ fn report_elidable_impl_lifetimes<'tcx>( lifetime, in_where_predicate: false, .. - } - | Usage { - lifetime, - in_bounded_ty: false, - in_generics_arg: false, - .. }, ] = usages.as_slice() { diff --git a/tests/ui/needless_lifetimes.fixed b/tests/ui/needless_lifetimes.fixed index cfa4cf9da3c..8196d608abd 100644 --- a/tests/ui/needless_lifetimes.fixed +++ b/tests/ui/needless_lifetimes.fixed @@ -562,4 +562,18 @@ mod rayon { } } +mod issue13749 { + pub struct Generic(T); + // Non elidable lifetime + #[expect(clippy::extra_unused_lifetimes)] + impl<'a, T> Generic where T: 'a {} +} + +mod issue13749bis { + pub struct Generic(T); + // Non elidable lifetime + #[expect(clippy::extra_unused_lifetimes)] + impl<'a, T: 'a> Generic {} +} + fn main() {} diff --git a/tests/ui/needless_lifetimes.rs b/tests/ui/needless_lifetimes.rs index 5e9d5116426..b55dd99c46d 100644 --- a/tests/ui/needless_lifetimes.rs +++ b/tests/ui/needless_lifetimes.rs @@ -562,4 +562,18 @@ mod rayon { } } +mod issue13749 { + pub struct Generic(T); + // Non elidable lifetime + #[expect(clippy::extra_unused_lifetimes)] + impl<'a, T> Generic where T: 'a {} +} + +mod issue13749bis { + pub struct Generic(T); + // Non elidable lifetime + #[expect(clippy::extra_unused_lifetimes)] + impl<'a, T: 'a> Generic {} +} + fn main() {} -- cgit 1.4.1-3-g733a5 From 736d1145d754a23be0c6489375a782adad452c7f Mon Sep 17 00:00:00 2001 From: Samuel Tardieu Date: Sat, 30 Nov 2024 22:27:20 +0100 Subject: Extract lint namespace and lint name from the meta item Lints with more than two segments are unrecognized, instead of having the middle segments truncated. --- clippy_lints/src/attrs/utils.rs | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) diff --git a/clippy_lints/src/attrs/utils.rs b/clippy_lints/src/attrs/utils.rs index 3bb02688bf2..96de0642904 100644 --- a/clippy_lints/src/attrs/utils.rs +++ b/clippy_lints/src/attrs/utils.rs @@ -75,13 +75,18 @@ fn is_relevant_expr(cx: &LateContext<'_>, typeck_results: &ty::TypeckResults<'_> /// Returns the lint name if it is clippy lint. pub(super) fn extract_clippy_lint(lint: &MetaItemInner) -> Option { - if let Some(meta_item) = lint.meta_item() - && meta_item.path.segments.len() > 1 - && let tool_name = meta_item.path.segments[0].ident - && tool_name.name == sym::clippy - { - let lint_name = meta_item.path.segments.last().unwrap().ident.name; - return Some(lint_name); + match namespace_and_lint(lint) { + (Some(sym::clippy), name) => name, + _ => None, + } +} + +/// Returns the lint namespace, if any, as well as the lint name. (`None`, `None`) means +/// the lint had less than 1 or more than 2 segments. +pub(super) fn namespace_and_lint(lint: &MetaItemInner) -> (Option, Option) { + match lint.meta_item().map(|m| m.path.segments.as_slice()).unwrap_or_default() { + [name] => (None, Some(name.ident.name)), + [namespace, name] => (Some(namespace.ident.name), Some(name.ident.name)), + _ => (None, None), } - None } -- cgit 1.4.1-3-g733a5 From 092bfefa49ca113e5e82d33879593fde8fa91830 Mon Sep 17 00:00:00 2001 From: Samuel Tardieu Date: Sat, 30 Nov 2024 22:27:20 +0100 Subject: Do not mark attributes with unknown namespace as useless --- clippy_lints/src/attrs/useless_attribute.rs | 22 ++++++++++++---------- tests/ui/useless_attribute.fixed | 9 +++++++++ tests/ui/useless_attribute.rs | 9 +++++++++ 3 files changed, 30 insertions(+), 10 deletions(-) diff --git a/clippy_lints/src/attrs/useless_attribute.rs b/clippy_lints/src/attrs/useless_attribute.rs index e21853598c3..e7158a6a6b6 100644 --- a/clippy_lints/src/attrs/useless_attribute.rs +++ b/clippy_lints/src/attrs/useless_attribute.rs @@ -1,8 +1,8 @@ use super::USELESS_ATTRIBUTE; -use super::utils::{extract_clippy_lint, is_lint_level, is_word}; +use super::utils::{is_lint_level, is_word, namespace_and_lint}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::{SpanRangeExt, first_line_of_span}; -use rustc_ast::{Attribute, Item, ItemKind, MetaItemInner}; +use rustc_ast::{Attribute, Item, ItemKind}; use rustc_errors::Applicability; use rustc_lint::{EarlyContext, LintContext}; use rustc_middle::lint::in_external_macro; @@ -20,11 +20,13 @@ pub(super) fn check(cx: &EarlyContext<'_>, item: &Item, attrs: &[Attribute]) { for lint in lint_list { match item.kind { ItemKind::Use(..) => { - if let MetaItemInner::MetaItem(meta_item) = lint - && meta_item.is_word() - && let Some(ident) = meta_item.ident() + let (namespace @ (Some(sym::clippy) | None), Some(name)) = namespace_and_lint(lint) else { + return; + }; + + if namespace.is_none() && matches!( - ident.name.as_str(), + name.as_str(), "ambiguous_glob_reexports" | "dead_code" | "deprecated" @@ -39,9 +41,9 @@ pub(super) fn check(cx: &EarlyContext<'_>, item: &Item, attrs: &[Attribute]) { return; } - if extract_clippy_lint(lint).is_some_and(|symbol| { - matches!( - symbol.as_str(), + if namespace == Some(sym::clippy) + && matches!( + name.as_str(), "wildcard_imports" | "enum_glob_use" | "redundant_pub_crate" @@ -52,7 +54,7 @@ pub(super) fn check(cx: &EarlyContext<'_>, item: &Item, attrs: &[Attribute]) { | "disallowed_types" | "unused_trait_names" ) - }) { + { return; } }, diff --git a/tests/ui/useless_attribute.fixed b/tests/ui/useless_attribute.fixed index 231fc0a892a..de1062f123b 100644 --- a/tests/ui/useless_attribute.fixed +++ b/tests/ui/useless_attribute.fixed @@ -134,3 +134,12 @@ pub mod ambiguous_glob_exports { pub use my_prelude::*; pub use my_type::*; } + +// Regression test for https://github.com/rust-lang/rust-clippy/issues/13764 +pub mod unknown_namespace { + pub mod some_module { + pub struct SomeType; + } + #[allow(rustc::non_glob_import_of_type_ir_inherent)] + use some_module::SomeType; +} diff --git a/tests/ui/useless_attribute.rs b/tests/ui/useless_attribute.rs index 8dfcd2110a4..94657dd1ca3 100644 --- a/tests/ui/useless_attribute.rs +++ b/tests/ui/useless_attribute.rs @@ -134,3 +134,12 @@ pub mod ambiguous_glob_exports { pub use my_prelude::*; pub use my_type::*; } + +// Regression test for https://github.com/rust-lang/rust-clippy/issues/13764 +pub mod unknown_namespace { + pub mod some_module { + pub struct SomeType; + } + #[allow(rustc::non_glob_import_of_type_ir_inherent)] + use some_module::SomeType; +} -- cgit 1.4.1-3-g733a5 From c52fe8bc2a86adc89754776634ffc146efada745 Mon Sep 17 00:00:00 2001 From: David Tolnay Date: Thu, 28 Nov 2024 12:47:18 -0800 Subject: Eliminate magic numbers from expression precedence --- clippy_lints/src/dereference.rs | 28 +++++++++++----------- clippy_lints/src/loops/single_element_loop.rs | 4 ++-- clippy_lints/src/matches/manual_utils.rs | 4 ++-- clippy_lints/src/neg_multiply.rs | 4 ++-- clippy_lints/src/redundant_slicing.rs | 4 ++-- .../transmutes_expressible_as_ptr_casts.rs | 5 ++-- 6 files changed, 24 insertions(+), 25 deletions(-) diff --git a/clippy_lints/src/dereference.rs b/clippy_lints/src/dereference.rs index b1d192adff9..c449a1a875b 100644 --- a/clippy_lints/src/dereference.rs +++ b/clippy_lints/src/dereference.rs @@ -7,7 +7,7 @@ use clippy_utils::{ peel_middle_ty_refs, }; use core::mem; -use rustc_ast::util::parser::{PREC_PREFIX, PREC_UNAMBIGUOUS}; +use rustc_ast::util::parser::ExprPrecedence; use rustc_data_structures::fx::FxIndexMap; use rustc_errors::Applicability; use rustc_hir::def_id::DefId; @@ -963,7 +963,7 @@ fn report<'tcx>( // expr_str (the suggestion) is never shown if is_final_ufcs is true, since it's // `expr.kind == ExprKind::Call`. Therefore, this is, afaik, always unnecessary. /* - expr_str = if !expr_is_macro_call && is_final_ufcs && expr.precedence() < PREC_PREFIX { + expr_str = if !expr_is_macro_call && is_final_ufcs && expr.precedence() < ExprPrecedence::Prefix { Cow::Owned(format!("({expr_str})")) } else { expr_str @@ -999,13 +999,13 @@ fn report<'tcx>( data.first_expr.span, state.msg, |diag| { - let (precedence, calls_field) = match cx.tcx.parent_hir_node(data.first_expr.hir_id) { + let needs_paren = match cx.tcx.parent_hir_node(data.first_expr.hir_id) { Node::Expr(e) => match e.kind { - ExprKind::Call(callee, _) if callee.hir_id != data.first_expr.hir_id => (0, false), - ExprKind::Call(..) => (PREC_UNAMBIGUOUS, matches!(expr.kind, ExprKind::Field(..))), - _ => (e.precedence(), false), + ExprKind::Call(callee, _) if callee.hir_id != data.first_expr.hir_id => false, + ExprKind::Call(..) => expr.precedence() < ExprPrecedence::Unambiguous || matches!(expr.kind, ExprKind::Field(..)), + _ => expr.precedence() < e.precedence(), }, - _ => (0, false), + _ => false, }; let is_in_tuple = matches!( get_parent_expr(cx, data.first_expr), @@ -1016,7 +1016,7 @@ fn report<'tcx>( ); let sugg = if !snip_is_macro - && (calls_field || expr.precedence() < precedence) + && needs_paren && !has_enclosing_paren(&snip) && !is_in_tuple { @@ -1049,16 +1049,16 @@ fn report<'tcx>( } } - let (prefix, precedence) = match mutability { + let (prefix, needs_paren) = match mutability { Some(mutability) if !ty.is_ref() => { let prefix = match mutability { Mutability::Not => "&", Mutability::Mut => "&mut ", }; - (prefix, PREC_PREFIX) + (prefix, expr.precedence() < ExprPrecedence::Prefix) }, - None if !ty.is_ref() && data.adjusted_ty.is_ref() => ("&", 0), - _ => ("", 0), + None if !ty.is_ref() && data.adjusted_ty.is_ref() => ("&", false), + _ => ("", false), }; span_lint_hir_and_then( cx, @@ -1070,7 +1070,7 @@ fn report<'tcx>( let mut app = Applicability::MachineApplicable; let (snip, snip_is_macro) = snippet_with_context(cx, expr.span, data.first_expr.span.ctxt(), "..", &mut app); - let sugg = if !snip_is_macro && expr.precedence() < precedence && !has_enclosing_paren(&snip) { + let sugg = if !snip_is_macro && needs_paren && !has_enclosing_paren(&snip) { format!("{prefix}({snip})") } else { format!("{prefix}{snip}") @@ -1157,7 +1157,7 @@ impl<'tcx> Dereferencing<'tcx> { }, Some(parent) if !parent.span.from_expansion() => { // Double reference might be needed at this point. - if parent.precedence() == PREC_UNAMBIGUOUS { + if parent.precedence() == ExprPrecedence::Unambiguous { // Parentheses would be needed here, don't lint. *outer_pat = None; } else { diff --git a/clippy_lints/src/loops/single_element_loop.rs b/clippy_lints/src/loops/single_element_loop.rs index 35dc8e9aa4e..12719c4f94b 100644 --- a/clippy_lints/src/loops/single_element_loop.rs +++ b/clippy_lints/src/loops/single_element_loop.rs @@ -3,7 +3,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::{indent_of, snippet, snippet_with_applicability}; use clippy_utils::visitors::contains_break_or_continue; use rustc_ast::Mutability; -use rustc_ast::util::parser::PREC_PREFIX; +use rustc_ast::util::parser::ExprPrecedence; use rustc_errors::Applicability; use rustc_hir::{BorrowKind, Expr, ExprKind, Pat, PatKind, is_range_literal}; use rustc_lint::LateContext; @@ -84,7 +84,7 @@ pub(super) fn check<'tcx>( if !prefix.is_empty() && ( // Precedence of internal expression is less than or equal to precedence of `&expr`. - arg_expression.precedence() <= PREC_PREFIX || is_range_literal(arg_expression) + arg_expression.precedence() <= ExprPrecedence::Prefix || is_range_literal(arg_expression) ) { arg_snip = format!("({arg_snip})").into(); diff --git a/clippy_lints/src/matches/manual_utils.rs b/clippy_lints/src/matches/manual_utils.rs index 9c6df4d8ac0..bac5cf88cfb 100644 --- a/clippy_lints/src/matches/manual_utils.rs +++ b/clippy_lints/src/matches/manual_utils.rs @@ -7,7 +7,7 @@ use clippy_utils::{ CaptureKind, can_move_expr_to_closure, is_else_clause, is_lint_allowed, is_res_lang_ctor, path_res, path_to_local_id, peel_blocks, peel_hir_expr_refs, peel_hir_expr_while, }; -use rustc_ast::util::parser::PREC_UNAMBIGUOUS; +use rustc_ast::util::parser::ExprPrecedence; use rustc_errors::Applicability; use rustc_hir::LangItem::{OptionNone, OptionSome}; use rustc_hir::def::Res; @@ -117,7 +117,7 @@ where // it's being passed by value. let scrutinee = peel_hir_expr_refs(scrutinee).0; let (scrutinee_str, _) = snippet_with_context(cx, scrutinee.span, expr_ctxt, "..", &mut app); - let scrutinee_str = if scrutinee.span.eq_ctxt(expr.span) && scrutinee.precedence() < PREC_UNAMBIGUOUS { + let scrutinee_str = if scrutinee.span.eq_ctxt(expr.span) && scrutinee.precedence() < ExprPrecedence::Unambiguous { format!("({scrutinee_str})") } else { scrutinee_str.into() diff --git a/clippy_lints/src/neg_multiply.rs b/clippy_lints/src/neg_multiply.rs index a0ba2aaf552..429afff9b66 100644 --- a/clippy_lints/src/neg_multiply.rs +++ b/clippy_lints/src/neg_multiply.rs @@ -2,7 +2,7 @@ use clippy_utils::consts::{self, Constant}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_context; use clippy_utils::sugg::has_enclosing_paren; -use rustc_ast::util::parser::PREC_PREFIX; +use rustc_ast::util::parser::ExprPrecedence; use rustc_errors::Applicability; use rustc_hir::{BinOpKind, Expr, ExprKind, UnOp}; use rustc_lint::{LateContext, LateLintPass}; @@ -58,7 +58,7 @@ fn check_mul(cx: &LateContext<'_>, span: Span, lit: &Expr<'_>, exp: &Expr<'_>) { { let mut applicability = Applicability::MachineApplicable; let (snip, from_macro) = snippet_with_context(cx, exp.span, span.ctxt(), "..", &mut applicability); - let suggestion = if !from_macro && exp.precedence() < PREC_PREFIX && !has_enclosing_paren(&snip) { + let suggestion = if !from_macro && exp.precedence() < ExprPrecedence::Prefix && !has_enclosing_paren(&snip) { format!("-({snip})") } else { format!("-{snip}") diff --git a/clippy_lints/src/redundant_slicing.rs b/clippy_lints/src/redundant_slicing.rs index 79baa914b03..8e3472b1b5a 100644 --- a/clippy_lints/src/redundant_slicing.rs +++ b/clippy_lints/src/redundant_slicing.rs @@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::snippet_with_context; use clippy_utils::ty::is_type_lang_item; use clippy_utils::{get_parent_expr, peel_middle_ty_refs}; -use rustc_ast::util::parser::PREC_PREFIX; +use rustc_ast::util::parser::ExprPrecedence; use rustc_errors::Applicability; use rustc_hir::{BorrowKind, Expr, ExprKind, LangItem, Mutability}; use rustc_lint::{LateContext, LateLintPass, Lint}; @@ -85,7 +85,7 @@ impl<'tcx> LateLintPass<'tcx> for RedundantSlicing { let (expr_ty, expr_ref_count) = peel_middle_ty_refs(cx.typeck_results().expr_ty(expr)); let (indexed_ty, indexed_ref_count) = peel_middle_ty_refs(cx.typeck_results().expr_ty(indexed)); let parent_expr = get_parent_expr(cx, expr); - let needs_parens_for_prefix = parent_expr.is_some_and(|parent| parent.precedence() > PREC_PREFIX); + let needs_parens_for_prefix = parent_expr.is_some_and(|parent| parent.precedence() > ExprPrecedence::Prefix); if expr_ty == indexed_ty { if expr_ref_count > indexed_ref_count { diff --git a/clippy_lints/src/transmute/transmutes_expressible_as_ptr_casts.rs b/clippy_lints/src/transmute/transmutes_expressible_as_ptr_casts.rs index 8d71036084d..0d5cf45a5e6 100644 --- a/clippy_lints/src/transmute/transmutes_expressible_as_ptr_casts.rs +++ b/clippy_lints/src/transmute/transmutes_expressible_as_ptr_casts.rs @@ -1,7 +1,7 @@ use super::TRANSMUTES_EXPRESSIBLE_AS_PTR_CASTS; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::sugg::Sugg; -use rustc_ast::util::parser::AssocOp; +use rustc_ast::util::parser::ExprPrecedence; use rustc_errors::Applicability; use rustc_hir::{Expr, Node}; use rustc_hir_typeck::cast::check_cast; @@ -44,8 +44,7 @@ pub(super) fn check<'tcx>( }; if let Node::Expr(parent) = cx.tcx.parent_hir_node(e.hir_id) - && parent.precedence() - > i8::try_from(AssocOp::As.precedence()).expect("AssocOp always returns a precedence < 128") + && parent.precedence() > ExprPrecedence::Cast { sugg = format!("({sugg})"); } -- cgit 1.4.1-3-g733a5 From 92badb3d1933e21c863396709b6132f9870fb3d5 Mon Sep 17 00:00:00 2001 From: Samuel Moelius Date: Sun, 1 Dec 2024 11:07:56 -0500 Subject: `typing_env_env_for_derived_eq` -> `typing_env_for_derived_eq` --- clippy_lints/src/derive.rs | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/clippy_lints/src/derive.rs b/clippy_lints/src/derive.rs index 8125dab8adf..f7f86266037 100644 --- a/clippy_lints/src/derive.rs +++ b/clippy_lints/src/derive.rs @@ -453,7 +453,7 @@ fn check_partial_eq_without_eq<'tcx>(cx: &LateContext<'tcx>, span: Span, trait_r && cx.tcx.is_diagnostic_item(sym::PartialEq, def_id) && !has_non_exhaustive_attr(cx.tcx, *adt) && !ty_implements_eq_trait(cx.tcx, ty, eq_trait_def_id) - && let typing_env = typing_env_env_for_derived_eq(cx.tcx, adt.did(), eq_trait_def_id) + && let typing_env = typing_env_for_derived_eq(cx.tcx, adt.did(), eq_trait_def_id) && let Some(local_def_id) = adt.did().as_local() // If all of our fields implement `Eq`, we can implement `Eq` too && adt @@ -484,7 +484,7 @@ fn ty_implements_eq_trait<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, eq_trait_id: De } /// Creates the `ParamEnv` used for the give type's derived `Eq` impl. -fn typing_env_env_for_derived_eq(tcx: TyCtxt<'_>, did: DefId, eq_trait_id: DefId) -> ty::TypingEnv<'_> { +fn typing_env_for_derived_eq(tcx: TyCtxt<'_>, did: DefId, eq_trait_id: DefId) -> ty::TypingEnv<'_> { // Initial map from generic index to param def. // Vec<(param_def, needs_eq)> let mut params = tcx -- cgit 1.4.1-3-g733a5 From 5082adf9b54f2d39ecb50c4335ab80e155e63dd9 Mon Sep 17 00:00:00 2001 From: Oli Scherer Date: Mon, 2 Dec 2024 10:06:26 +0000 Subject: Change `AttrArgs::Eq` into a struct variant --- clippy_lints/src/attrs/should_panic_without_expect.rs | 2 +- clippy_lints/src/doc/include_in_doc_without_cfg.rs | 2 +- clippy_lints/src/large_include_file.rs | 2 +- clippy_utils/src/ast_utils.rs | 4 ++-- 4 files changed, 5 insertions(+), 5 deletions(-) diff --git a/clippy_lints/src/attrs/should_panic_without_expect.rs b/clippy_lints/src/attrs/should_panic_without_expect.rs index fadd5272880..97cffeb098e 100644 --- a/clippy_lints/src/attrs/should_panic_without_expect.rs +++ b/clippy_lints/src/attrs/should_panic_without_expect.rs @@ -9,7 +9,7 @@ use rustc_span::sym; pub(super) fn check(cx: &EarlyContext<'_>, attr: &Attribute) { if let AttrKind::Normal(normal_attr) = &attr.kind { - if let AttrArgs::Eq(_, AttrArgsEq::Ast(_)) = &normal_attr.item.args { + if let AttrArgs::Eq { value: AttrArgsEq::Ast(_), .. } = &normal_attr.item.args { // `#[should_panic = ".."]` found, good return; } diff --git a/clippy_lints/src/doc/include_in_doc_without_cfg.rs b/clippy_lints/src/doc/include_in_doc_without_cfg.rs index 49978d4a655..2182689f985 100644 --- a/clippy_lints/src/doc/include_in_doc_without_cfg.rs +++ b/clippy_lints/src/doc/include_in_doc_without_cfg.rs @@ -12,7 +12,7 @@ pub fn check(cx: &LateContext<'_>, attrs: &[Attribute]) { if !attr.span.from_expansion() && let AttrKind::Normal(ref normal) = attr.kind && normal.item.path == sym::doc - && let AttrArgs::Eq(_, AttrArgsEq::Hir(ref meta)) = normal.item.args + && let AttrArgs::Eq { value: AttrArgsEq::Hir(ref meta), .. } = normal.item.args && !attr.span.contains(meta.span) // Since the `include_str` is already expanded at this point, we can only take the // whole attribute snippet and then modify for our suggestion. diff --git a/clippy_lints/src/large_include_file.rs b/clippy_lints/src/large_include_file.rs index 4f22931a4de..b38e362410e 100644 --- a/clippy_lints/src/large_include_file.rs +++ b/clippy_lints/src/large_include_file.rs @@ -96,7 +96,7 @@ impl LateLintPass<'_> for LargeIncludeFile { && let AttrKind::Normal(ref normal) = attr.kind && let Some(doc) = attr.doc_str() && doc.as_str().len() as u64 > self.max_file_size - && let AttrArgs::Eq(_, AttrArgsEq::Hir(ref meta)) = normal.item.args + && let AttrArgs::Eq { value: AttrArgsEq::Hir(ref meta), .. } = normal.item.args && !attr.span.contains(meta.span) // Since the `include_str` is already expanded at this point, we can only take the // whole attribute snippet and then modify for our suggestion. diff --git a/clippy_utils/src/ast_utils.rs b/clippy_utils/src/ast_utils.rs index c90f4a6ebfe..620a9b56eb5 100644 --- a/clippy_utils/src/ast_utils.rs +++ b/clippy_utils/src/ast_utils.rs @@ -872,8 +872,8 @@ pub fn eq_attr_args(l: &AttrArgs, r: &AttrArgs) -> bool { match (l, r) { (Empty, Empty) => true, (Delimited(la), Delimited(ra)) => eq_delim_args(la, ra), - (Eq(_, AttrArgsEq::Ast(le)), Eq(_, AttrArgsEq::Ast(re))) => eq_expr(le, re), - (Eq(_, AttrArgsEq::Hir(ll)), Eq(_, AttrArgsEq::Hir(rl))) => ll.kind == rl.kind, + (Eq { value: AttrArgsEq::Ast(le), .. }, Eq{ value: AttrArgsEq::Ast(re), .. }) => eq_expr(le, re), + (Eq { value: AttrArgsEq::Hir(ll), .. }, Eq{ value: AttrArgsEq::Hir(rl), .. }) => ll.kind == rl.kind, _ => false, } } -- cgit 1.4.1-3-g733a5 From b330d9637ab826f20278fb84957f7464b279b251 Mon Sep 17 00:00:00 2001 From: lcnr Date: Mon, 2 Dec 2024 13:57:56 +0100 Subject: remove `Ty::is_copy_modulo_regions` --- clippy_lints/src/methods/manual_inspect.rs | 4 ++-- clippy_lints/src/question_mark.rs | 2 +- clippy_utils/src/ty.rs | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/clippy_lints/src/methods/manual_inspect.rs b/clippy_lints/src/methods/manual_inspect.rs index 865a42b65c6..20e4d233525 100644 --- a/clippy_lints/src/methods/manual_inspect.rs +++ b/clippy_lints/src/methods/manual_inspect.rs @@ -148,7 +148,7 @@ pub(crate) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, arg: &Expr<'_>, name: _ => {}, } } - requires_copy |= !ty.is_copy_modulo_regions(cx.tcx, cx.typing_env()); + requires_copy |= !cx.type_is_copy_modulo_regions(ty); break; } }, @@ -158,7 +158,7 @@ pub(crate) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, arg: &Expr<'_>, name: } if can_lint - && (!requires_copy || arg_ty.is_copy_modulo_regions(cx.tcx, cx.typing_env())) + && (!requires_copy || cx.type_is_copy_modulo_regions(arg_ty)) // This case could be handled, but a fair bit of care would need to be taken. && (!requires_deref || arg_ty.is_freeze(cx.tcx, cx.typing_env())) { diff --git a/clippy_lints/src/question_mark.rs b/clippy_lints/src/question_mark.rs index 4b96858d8f6..77abe7151f0 100644 --- a/clippy_lints/src/question_mark.rs +++ b/clippy_lints/src/question_mark.rs @@ -251,7 +251,7 @@ fn check_is_none_or_err_and_early_return<'tcx>(cx: &LateContext<'tcx>, expr: &Ex { let mut applicability = Applicability::MachineApplicable; let receiver_str = snippet_with_applicability(cx, caller.span, "..", &mut applicability); - let by_ref = !caller_ty.is_copy_modulo_regions(cx.tcx, cx.typing_env()) + let by_ref = !cx.type_is_copy_modulo_regions(caller_ty) && !matches!(caller.kind, ExprKind::Call(..) | ExprKind::MethodCall(..)); let sugg = if let Some(else_inner) = r#else { if eq_expr_value(cx, caller, peel_blocks(else_inner)) { diff --git a/clippy_utils/src/ty.rs b/clippy_utils/src/ty.rs index 39c9d234a1a..260d1b801e3 100644 --- a/clippy_utils/src/ty.rs +++ b/clippy_utils/src/ty.rs @@ -38,7 +38,7 @@ pub use type_certainty::expr_type_is_certain; /// Checks if the given type implements copy. pub fn is_copy<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { - ty.is_copy_modulo_regions(cx.tcx, cx.typing_env()) + cx.type_is_copy_modulo_regions(ty) } /// This checks whether a given type is known to implement Debug. -- cgit 1.4.1-3-g733a5 From ab5d55c996af0e52e216ce18bf3c38eb263633f4 Mon Sep 17 00:00:00 2001 From: Samuel Tardieu Date: Sat, 30 Nov 2024 19:22:58 +0100 Subject: Add more receivers to `useless_conversion` - `ControlFlow::map_break()` - `ControlFlow::map_continue()` - `Iterator::map()` --- clippy_lints/src/methods/mod.rs | 3 + clippy_lints/src/useless_conversion.rs | 22 ++++++- tests/ui/useless_conversion.fixed | 17 +++++- tests/ui/useless_conversion.rs | 17 +++++- tests/ui/useless_conversion.stderr | 108 ++++++++++++++++++++------------- 5 files changed, 120 insertions(+), 47 deletions(-) diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs index 6c10ef6e206..941b086ab2e 100644 --- a/clippy_lints/src/methods/mod.rs +++ b/clippy_lints/src/methods/mod.rs @@ -4984,6 +4984,9 @@ impl Methods { manual_inspect::check(cx, expr, m_arg, name, span, &self.msrv); crate::useless_conversion::check_function_application(cx, expr, recv, m_arg); }, + ("map_break" | "map_continue", [m_arg]) => { + crate::useless_conversion::check_function_application(cx, expr, recv, m_arg); + }, ("map_or", [def, map]) => { option_map_or_none::check(cx, expr, recv, def, map); manual_ok_or::check(cx, expr, recv, def, map); diff --git a/clippy_lints/src/useless_conversion.rs b/clippy_lints/src/useless_conversion.rs index 315410c768a..ccf04ab50f2 100644 --- a/clippy_lints/src/useless_conversion.rs +++ b/clippy_lints/src/useless_conversion.rs @@ -14,7 +14,7 @@ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::traits::ObligationCause; use rustc_middle::ty::{self, AdtDef, EarlyBinder, GenericArg, GenericArgsRef, Ty, TypeVisitableExt}; use rustc_session::impl_lint_pass; -use rustc_span::{Span, sym}; +use rustc_span::{Span, Symbol, sym}; use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt; declare_clippy_lint! { @@ -415,9 +415,25 @@ fn has_eligible_receiver(cx: &LateContext<'_>, recv: &Expr<'_>, expr: &Expr<'_>) let recv_ty = cx.typeck_results().expr_ty(recv); if is_inherent_method_call(cx, expr) && let Some(recv_ty_defid) = recv_ty.ty_adt_def().map(AdtDef::did) - && let Some(diag_name) = cx.tcx.get_diagnostic_name(recv_ty_defid) - && matches!(diag_name, sym::Option | sym::Result) { + if let Some(diag_name) = cx.tcx.get_diagnostic_name(recv_ty_defid) + && matches!(diag_name, sym::Option | sym::Result) + { + return true; + } + + // FIXME: Add ControlFlow diagnostic item + let def_path = cx.get_def_path(recv_ty_defid); + if def_path + .iter() + .map(Symbol::as_str) + .zip(["core", "ops", "control_flow", "ControlFlow"]) + .all(|(sym, s)| sym == s) + { + return true; + } + } + if is_trait_method(cx, expr, sym::Iterator) { return true; } false diff --git a/tests/ui/useless_conversion.fixed b/tests/ui/useless_conversion.fixed index 36fc8938e87..2f7edd92bb7 100644 --- a/tests/ui/useless_conversion.fixed +++ b/tests/ui/useless_conversion.fixed @@ -3,6 +3,8 @@ // FIXME(static_mut_refs): Do not allow `static_mut_refs` lint #![allow(static_mut_refs)] +use std::ops::ControlFlow; + fn test_generic(val: T) -> T { let _ = val; val @@ -308,6 +310,13 @@ fn direct_application() { let _: Result<(), std::io::Error> = test_issue_3913(); //~^ useless_conversion + let c: ControlFlow<()> = ControlFlow::Continue(()); + let _: ControlFlow<()> = c; + //~^ useless_conversion + let c: ControlFlow<()> = ControlFlow::Continue(()); + let _: ControlFlow<()> = c; + //~^ useless_conversion + struct Absorb; impl From<()> for Absorb { fn from(_: ()) -> Self { @@ -319,11 +328,17 @@ fn direct_application() { Self } } + let _: Vec = [1u32].into_iter().collect(); + //~^ useless_conversion // No lint for those let _: Result = test_issue_3913().map(Into::into); let _: Result<(), Absorb> = test_issue_3913().map_err(Into::into); let _: Result = test_issue_3913().map(From::from); let _: Result<(), Absorb> = test_issue_3913().map_err(From::from); - let _: Vec = [1u32].into_iter().map(Into::into).collect(); +} + +fn gen_identity(x: [T; 3]) -> Vec { + x.into_iter().collect() + //~^ useless_conversion } diff --git a/tests/ui/useless_conversion.rs b/tests/ui/useless_conversion.rs index 7509b70d39c..eacdf77f905 100644 --- a/tests/ui/useless_conversion.rs +++ b/tests/ui/useless_conversion.rs @@ -3,6 +3,8 @@ // FIXME(static_mut_refs): Do not allow `static_mut_refs` lint #![allow(static_mut_refs)] +use std::ops::ControlFlow; + fn test_generic(val: T) -> T { let _ = T::from(val); val.into() @@ -308,6 +310,13 @@ fn direct_application() { let _: Result<(), std::io::Error> = test_issue_3913().map_err(From::from); //~^ useless_conversion + let c: ControlFlow<()> = ControlFlow::Continue(()); + let _: ControlFlow<()> = c.map_break(Into::into); + //~^ useless_conversion + let c: ControlFlow<()> = ControlFlow::Continue(()); + let _: ControlFlow<()> = c.map_continue(Into::into); + //~^ useless_conversion + struct Absorb; impl From<()> for Absorb { fn from(_: ()) -> Self { @@ -319,11 +328,17 @@ fn direct_application() { Self } } + let _: Vec = [1u32].into_iter().map(Into::into).collect(); + //~^ useless_conversion // No lint for those let _: Result = test_issue_3913().map(Into::into); let _: Result<(), Absorb> = test_issue_3913().map_err(Into::into); let _: Result = test_issue_3913().map(From::from); let _: Result<(), Absorb> = test_issue_3913().map_err(From::from); - let _: Vec = [1u32].into_iter().map(Into::into).collect(); +} + +fn gen_identity(x: [T; 3]) -> Vec { + x.into_iter().map(Into::into).collect() + //~^ useless_conversion } diff --git a/tests/ui/useless_conversion.stderr b/tests/ui/useless_conversion.stderr index 7ed42dd2080..6aeb382902b 100644 --- a/tests/ui/useless_conversion.stderr +++ b/tests/ui/useless_conversion.stderr @@ -1,5 +1,5 @@ error: useless conversion to the same type: `T` - --> tests/ui/useless_conversion.rs:7:13 + --> tests/ui/useless_conversion.rs:9:13 | LL | let _ = T::from(val); | ^^^^^^^^^^^^ help: consider removing `T::from()`: `val` @@ -11,244 +11,268 @@ LL | #![deny(clippy::useless_conversion)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ error: useless conversion to the same type: `T` - --> tests/ui/useless_conversion.rs:8:5 + --> tests/ui/useless_conversion.rs:10:5 | LL | val.into() | ^^^^^^^^^^ help: consider removing `.into()`: `val` error: useless conversion to the same type: `i32` - --> tests/ui/useless_conversion.rs:20:22 + --> tests/ui/useless_conversion.rs:22:22 | LL | let _: i32 = 0i32.into(); | ^^^^^^^^^^^ help: consider removing `.into()`: `0i32` error: useless conversion to the same type: `std::str::Lines<'_>` - --> tests/ui/useless_conversion.rs:50:22 + --> tests/ui/useless_conversion.rs:52:22 | LL | if Some("ok") == lines.into_iter().next() {} | ^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `lines` error: useless conversion to the same type: `std::str::Lines<'_>` - --> tests/ui/useless_conversion.rs:55:21 + --> tests/ui/useless_conversion.rs:57:21 | LL | let mut lines = text.lines().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `text.lines()` error: useless conversion to the same type: `std::str::Lines<'_>` - --> tests/ui/useless_conversion.rs:61:22 + --> tests/ui/useless_conversion.rs:63:22 | LL | if Some("ok") == text.lines().into_iter().next() {} | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `text.lines()` error: useless conversion to the same type: `std::ops::Range` - --> tests/ui/useless_conversion.rs:67:13 + --> tests/ui/useless_conversion.rs:69:13 | LL | let _ = NUMBERS.into_iter().next(); | ^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `NUMBERS` error: useless conversion to the same type: `std::ops::Range` - --> tests/ui/useless_conversion.rs:72:17 + --> tests/ui/useless_conversion.rs:74:17 | LL | let mut n = NUMBERS.into_iter(); | ^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `NUMBERS` error: useless conversion to the same type: `std::string::String` - --> tests/ui/useless_conversion.rs:134:21 + --> tests/ui/useless_conversion.rs:136:21 | LL | let _: String = "foo".to_string().into(); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into()`: `"foo".to_string()` error: useless conversion to the same type: `std::string::String` - --> tests/ui/useless_conversion.rs:135:21 + --> tests/ui/useless_conversion.rs:137:21 | LL | let _: String = From::from("foo".to_string()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `From::from()`: `"foo".to_string()` error: useless conversion to the same type: `std::string::String` - --> tests/ui/useless_conversion.rs:136:13 + --> tests/ui/useless_conversion.rs:138:13 | LL | let _ = String::from("foo".to_string()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `"foo".to_string()` error: useless conversion to the same type: `std::string::String` - --> tests/ui/useless_conversion.rs:137:13 + --> tests/ui/useless_conversion.rs:139:13 | LL | let _ = String::from(format!("A: {:04}", 123)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `format!("A: {:04}", 123)` error: useless conversion to the same type: `std::str::Lines<'_>` - --> tests/ui/useless_conversion.rs:138:13 + --> tests/ui/useless_conversion.rs:140:13 | LL | let _ = "".lines().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `"".lines()` error: useless conversion to the same type: `std::vec::IntoIter` - --> tests/ui/useless_conversion.rs:139:13 + --> tests/ui/useless_conversion.rs:141:13 | LL | let _ = vec![1, 2, 3].into_iter().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `vec![1, 2, 3].into_iter()` error: useless conversion to the same type: `std::string::String` - --> tests/ui/useless_conversion.rs:140:21 + --> tests/ui/useless_conversion.rs:142:21 | LL | let _: String = format!("Hello {}", "world").into(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into()`: `format!("Hello {}", "world")` error: useless conversion to the same type: `i32` - --> tests/ui/useless_conversion.rs:145:13 + --> tests/ui/useless_conversion.rs:147:13 | LL | let _ = i32::from(a + b) * 3; | ^^^^^^^^^^^^^^^^ help: consider removing `i32::from()`: `(a + b)` error: useless conversion to the same type: `Foo<'a'>` - --> tests/ui/useless_conversion.rs:151:23 + --> tests/ui/useless_conversion.rs:153:23 | LL | let _: Foo<'a'> = s2.into(); | ^^^^^^^^^ help: consider removing `.into()`: `s2` error: useless conversion to the same type: `Foo<'a'>` - --> tests/ui/useless_conversion.rs:153:13 + --> tests/ui/useless_conversion.rs:155:13 | LL | let _ = Foo::<'a'>::from(s3); | ^^^^^^^^^^^^^^^^^^^^ help: consider removing `Foo::<'a'>::from()`: `s3` error: useless conversion to the same type: `std::vec::IntoIter>` - --> tests/ui/useless_conversion.rs:155:13 + --> tests/ui/useless_conversion.rs:157:13 | LL | let _ = vec![s4, s4, s4].into_iter().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `vec![s4, s4, s4].into_iter()` error: explicit call to `.into_iter()` in function argument accepting `IntoIterator` - --> tests/ui/useless_conversion.rs:187:7 + --> tests/ui/useless_conversion.rs:189:7 | LL | b(vec![1, 2].into_iter()); | ^^^^^^^^^^^^^^^^^^^^^^ help: consider removing the `.into_iter()`: `vec![1, 2]` | note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()` - --> tests/ui/useless_conversion.rs:177:13 + --> tests/ui/useless_conversion.rs:179:13 | LL | fn b>(_: T) {} | ^^^^^^^^^^^^^^^^^^^^^^^^ error: explicit call to `.into_iter()` in function argument accepting `IntoIterator` - --> tests/ui/useless_conversion.rs:188:7 + --> tests/ui/useless_conversion.rs:190:7 | LL | c(vec![1, 2].into_iter()); | ^^^^^^^^^^^^^^^^^^^^^^ help: consider removing the `.into_iter()`: `vec![1, 2]` | note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()` - --> tests/ui/useless_conversion.rs:178:18 + --> tests/ui/useless_conversion.rs:180:18 | LL | fn c(_: impl IntoIterator) {} | ^^^^^^^^^^^^^^^^^^^^^^^^ error: explicit call to `.into_iter()` in function argument accepting `IntoIterator` - --> tests/ui/useless_conversion.rs:189:7 + --> tests/ui/useless_conversion.rs:191:7 | LL | d(vec![1, 2].into_iter()); | ^^^^^^^^^^^^^^^^^^^^^^ help: consider removing the `.into_iter()`: `vec![1, 2]` | note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()` - --> tests/ui/useless_conversion.rs:181:12 + --> tests/ui/useless_conversion.rs:183:12 | LL | T: IntoIterator, | ^^^^^^^^^^^^^^^^^^^^^^^^ error: explicit call to `.into_iter()` in function argument accepting `IntoIterator` - --> tests/ui/useless_conversion.rs:192:7 + --> tests/ui/useless_conversion.rs:194:7 | LL | b(vec![1, 2].into_iter().into_iter()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing the `.into_iter()`s: `vec![1, 2]` | note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()` - --> tests/ui/useless_conversion.rs:177:13 + --> tests/ui/useless_conversion.rs:179:13 | LL | fn b>(_: T) {} | ^^^^^^^^^^^^^^^^^^^^^^^^ error: explicit call to `.into_iter()` in function argument accepting `IntoIterator` - --> tests/ui/useless_conversion.rs:193:7 + --> tests/ui/useless_conversion.rs:195:7 | LL | b(vec![1, 2].into_iter().into_iter().into_iter()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing the `.into_iter()`s: `vec![1, 2]` | note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()` - --> tests/ui/useless_conversion.rs:177:13 + --> tests/ui/useless_conversion.rs:179:13 | LL | fn b>(_: T) {} | ^^^^^^^^^^^^^^^^^^^^^^^^ error: explicit call to `.into_iter()` in function argument accepting `IntoIterator` - --> tests/ui/useless_conversion.rs:239:24 + --> tests/ui/useless_conversion.rs:241:24 | LL | foo2::([1, 2, 3].into_iter()); | ^^^^^^^^^^^^^^^^^^^^^ help: consider removing the `.into_iter()`: `[1, 2, 3]` | note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()` - --> tests/ui/useless_conversion.rs:218:12 + --> tests/ui/useless_conversion.rs:220:12 | LL | I: IntoIterator + Helper, | ^^^^^^^^^^^^^^^^^^^^^^^^ error: explicit call to `.into_iter()` in function argument accepting `IntoIterator` - --> tests/ui/useless_conversion.rs:247:14 + --> tests/ui/useless_conversion.rs:249:14 | LL | foo3([1, 2, 3].into_iter()); | ^^^^^^^^^^^^^^^^^^^^^ help: consider removing the `.into_iter()`: `[1, 2, 3]` | note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()` - --> tests/ui/useless_conversion.rs:227:12 + --> tests/ui/useless_conversion.rs:229:12 | LL | I: IntoIterator, | ^^^^^^^^^^^^^^^^^^^^^^^^ error: explicit call to `.into_iter()` in function argument accepting `IntoIterator` - --> tests/ui/useless_conversion.rs:256:16 + --> tests/ui/useless_conversion.rs:258:16 | LL | S1.foo([1, 2].into_iter()); | ^^^^^^^^^^^^^^^^^^ help: consider removing the `.into_iter()`: `[1, 2]` | note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()` - --> tests/ui/useless_conversion.rs:253:27 + --> tests/ui/useless_conversion.rs:255:27 | LL | pub fn foo(&self, _: I) {} | ^^^^^^^^^^^^ error: explicit call to `.into_iter()` in function argument accepting `IntoIterator` - --> tests/ui/useless_conversion.rs:275:44 + --> tests/ui/useless_conversion.rs:277:44 | LL | v0.into_iter().interleave_shortest(v1.into_iter()); | ^^^^^^^^^^^^^^ help: consider removing the `.into_iter()`: `v1` | note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()` - --> tests/ui/useless_conversion.rs:262:20 + --> tests/ui/useless_conversion.rs:264:20 | LL | J: IntoIterator, | ^^^^^^^^^^^^ error: useless conversion to the same type: `()` - --> tests/ui/useless_conversion.rs:302:58 + --> tests/ui/useless_conversion.rs:304:58 | LL | let _: Result<(), std::io::Error> = test_issue_3913().map(Into::into); | ^^^^^^^^^^^^^^^^ help: consider removing error: useless conversion to the same type: `std::io::Error` - --> tests/ui/useless_conversion.rs:304:58 + --> tests/ui/useless_conversion.rs:306:58 | LL | let _: Result<(), std::io::Error> = test_issue_3913().map_err(Into::into); | ^^^^^^^^^^^^^^^^^^^^ help: consider removing error: useless conversion to the same type: `()` - --> tests/ui/useless_conversion.rs:306:58 + --> tests/ui/useless_conversion.rs:308:58 | LL | let _: Result<(), std::io::Error> = test_issue_3913().map(From::from); | ^^^^^^^^^^^^^^^^ help: consider removing error: useless conversion to the same type: `std::io::Error` - --> tests/ui/useless_conversion.rs:308:58 + --> tests/ui/useless_conversion.rs:310:58 | LL | let _: Result<(), std::io::Error> = test_issue_3913().map_err(From::from); | ^^^^^^^^^^^^^^^^^^^^ help: consider removing -error: aborting due to 32 previous errors +error: useless conversion to the same type: `()` + --> tests/ui/useless_conversion.rs:314:31 + | +LL | let _: ControlFlow<()> = c.map_break(Into::into); + | ^^^^^^^^^^^^^^^^^^^^^^ help: consider removing + +error: useless conversion to the same type: `()` + --> tests/ui/useless_conversion.rs:317:31 + | +LL | let _: ControlFlow<()> = c.map_continue(Into::into); + | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing + +error: useless conversion to the same type: `u32` + --> tests/ui/useless_conversion.rs:331:41 + | +LL | let _: Vec = [1u32].into_iter().map(Into::into).collect(); + | ^^^^^^^^^^^^^^^^ help: consider removing + +error: useless conversion to the same type: `T` + --> tests/ui/useless_conversion.rs:342:18 + | +LL | x.into_iter().map(Into::into).collect() + | ^^^^^^^^^^^^^^^^ help: consider removing + +error: aborting due to 36 previous errors -- cgit 1.4.1-3-g733a5 From c8d800e2882b8c93dd3892030ade9bca27903d0f Mon Sep 17 00:00:00 2001 From: Urgau Date: Sun, 10 Dec 2023 18:16:53 +0100 Subject: Drop uplifted `clippy::fn_address_comparisons` --- clippy_lints/src/declared_lints.rs | 1 - clippy_lints/src/deprecated_lints.rs | 2 + clippy_lints/src/lib.rs | 2 - clippy_lints/src/unnamed_address.rs | 60 -------------- tests/ui/fn_address_comparisons.rs | 23 ------ tests/ui/fn_address_comparisons.stderr | 17 ---- tests/ui/rename.fixed | 2 + tests/ui/rename.rs | 2 + tests/ui/rename.stderr | 140 +++++++++++++++++---------------- 9 files changed, 79 insertions(+), 170 deletions(-) delete mode 100644 clippy_lints/src/unnamed_address.rs delete mode 100644 tests/ui/fn_address_comparisons.rs delete mode 100644 tests/ui/fn_address_comparisons.stderr diff --git a/clippy_lints/src/declared_lints.rs b/clippy_lints/src/declared_lints.rs index c4a0c8f1865..022ed180ed8 100644 --- a/clippy_lints/src/declared_lints.rs +++ b/clippy_lints/src/declared_lints.rs @@ -744,7 +744,6 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::unit_types::LET_UNIT_VALUE_INFO, crate::unit_types::UNIT_ARG_INFO, crate::unit_types::UNIT_CMP_INFO, - crate::unnamed_address::FN_ADDRESS_COMPARISONS_INFO, crate::unnecessary_box_returns::UNNECESSARY_BOX_RETURNS_INFO, crate::unnecessary_literal_bound::UNNECESSARY_LITERAL_BOUND_INFO, crate::unnecessary_map_on_constructor::UNNECESSARY_MAP_ON_CONSTRUCTOR_INFO, diff --git a/clippy_lints/src/deprecated_lints.rs b/clippy_lints/src/deprecated_lints.rs index 77dbe9b78a1..3ea792d8b83 100644 --- a/clippy_lints/src/deprecated_lints.rs +++ b/clippy_lints/src/deprecated_lints.rs @@ -74,6 +74,8 @@ declare_with_version! { RENAMED(RENAMED_VERSION): &[(&str, &str)] = &[ #[clippy::version = "1.53.0"] ("clippy::filter_map", "clippy::manual_filter_map"), #[clippy::version = ""] + ("clippy::fn_address_comparisons", "unpredictable_function_pointer_comparisons"), + #[clippy::version = ""] ("clippy::identity_conversion", "clippy::useless_conversion"), #[clippy::version = "pre 1.29.0"] ("clippy::if_let_redundant_pattern_matching", "clippy::redundant_pattern_matching"), diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs index c9064df25ac..e80cca6e7db 100644 --- a/clippy_lints/src/lib.rs +++ b/clippy_lints/src/lib.rs @@ -363,7 +363,6 @@ mod uninhabited_references; mod uninit_vec; mod unit_return_expecting_ord; mod unit_types; -mod unnamed_address; mod unnecessary_box_returns; mod unnecessary_literal_bound; mod unnecessary_map_on_constructor; @@ -786,7 +785,6 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_early_pass(|| Box::new(option_env_unwrap::OptionEnvUnwrap)); store.register_late_pass(move |_| Box::new(wildcard_imports::WildcardImports::new(conf))); store.register_late_pass(|_| Box::::default()); - store.register_late_pass(|_| Box::new(unnamed_address::UnnamedAddress)); store.register_late_pass(|_| Box::>::default()); store.register_late_pass(|_| Box::new(option_if_let_else::OptionIfLetElse)); store.register_late_pass(|_| Box::new(future_not_send::FutureNotSend)); diff --git a/clippy_lints/src/unnamed_address.rs b/clippy_lints/src/unnamed_address.rs deleted file mode 100644 index cd2dacc9f09..00000000000 --- a/clippy_lints/src/unnamed_address.rs +++ /dev/null @@ -1,60 +0,0 @@ -use clippy_utils::diagnostics::span_lint; -use rustc_hir::{BinOpKind, Expr, ExprKind}; -use rustc_lint::{LateContext, LateLintPass}; -use rustc_middle::ty; -use rustc_session::declare_lint_pass; - -declare_clippy_lint! { - /// ### What it does - /// Checks for comparisons with an address of a function item. - /// - /// ### Why is this bad? - /// Function item address is not guaranteed to be unique and could vary - /// between different code generation units. Furthermore different function items could have - /// the same address after being merged together. - /// - /// ### Example - /// ```no_run - /// type F = fn(); - /// fn a() {} - /// let f: F = a; - /// if f == a { - /// // ... - /// } - /// ``` - #[clippy::version = "1.44.0"] - pub FN_ADDRESS_COMPARISONS, - correctness, - "comparison with an address of a function item" -} - -declare_lint_pass!(UnnamedAddress => [FN_ADDRESS_COMPARISONS]); - -impl LateLintPass<'_> for UnnamedAddress { - fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) { - fn is_comparison(binop: BinOpKind) -> bool { - matches!( - binop, - BinOpKind::Eq | BinOpKind::Lt | BinOpKind::Le | BinOpKind::Ne | BinOpKind::Ge | BinOpKind::Gt - ) - } - - fn is_fn_def(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { - matches!(cx.typeck_results().expr_ty(expr).kind(), ty::FnDef(..)) - } - - if let ExprKind::Binary(binop, left, right) = expr.kind - && is_comparison(binop.node) - && cx.typeck_results().expr_ty_adjusted(left).is_fn_ptr() - && cx.typeck_results().expr_ty_adjusted(right).is_fn_ptr() - && (is_fn_def(cx, left) || is_fn_def(cx, right)) - { - span_lint( - cx, - FN_ADDRESS_COMPARISONS, - expr.span, - "comparing with a non-unique address of a function item", - ); - } - } -} diff --git a/tests/ui/fn_address_comparisons.rs b/tests/ui/fn_address_comparisons.rs deleted file mode 100644 index 35535bd4fdd..00000000000 --- a/tests/ui/fn_address_comparisons.rs +++ /dev/null @@ -1,23 +0,0 @@ -use std::fmt::Debug; -use std::ptr; -use std::rc::Rc; -use std::sync::Arc; - -fn a() {} - -#[warn(clippy::fn_address_comparisons)] -fn main() { - type F = fn(); - let f: F = a; - let g: F = f; - - // These should fail: - let _ = f == a; - //~^ ERROR: comparing with a non-unique address of a function item - //~| NOTE: `-D clippy::fn-address-comparisons` implied by `-D warnings` - let _ = f != a; - //~^ ERROR: comparing with a non-unique address of a function item - - // These should be fine: - let _ = f == g; -} diff --git a/tests/ui/fn_address_comparisons.stderr b/tests/ui/fn_address_comparisons.stderr deleted file mode 100644 index e6de7e35807..00000000000 --- a/tests/ui/fn_address_comparisons.stderr +++ /dev/null @@ -1,17 +0,0 @@ -error: comparing with a non-unique address of a function item - --> tests/ui/fn_address_comparisons.rs:15:13 - | -LL | let _ = f == a; - | ^^^^^^ - | - = note: `-D clippy::fn-address-comparisons` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::fn_address_comparisons)]` - -error: comparing with a non-unique address of a function item - --> tests/ui/fn_address_comparisons.rs:18:13 - | -LL | let _ = f != a; - | ^^^^^^ - -error: aborting due to 2 previous errors - diff --git a/tests/ui/rename.fixed b/tests/ui/rename.fixed index 0d6e07aa546..47149622ef7 100644 --- a/tests/ui/rename.fixed +++ b/tests/ui/rename.fixed @@ -59,6 +59,7 @@ #![allow(unknown_lints)] #![allow(unused_labels)] #![allow(ambiguous_wide_pointer_comparisons)] +#![allow(unpredictable_function_pointer_comparisons)] #![allow(clippy::reversed_empty_ranges)] #![warn(clippy::almost_complete_range)] //~ ERROR: lint `clippy::almost_complete_letter_range` #![warn(clippy::disallowed_names)] //~ ERROR: lint `clippy::blacklisted_name` @@ -74,6 +75,7 @@ #![warn(clippy::mixed_read_write_in_expression)] //~ ERROR: lint `clippy::eval_order_dependence` #![warn(clippy::manual_find_map)] //~ ERROR: lint `clippy::find_map` #![warn(clippy::manual_filter_map)] //~ ERROR: lint `clippy::filter_map` +#![warn(unpredictable_function_pointer_comparisons)] //~ ERROR: lint `clippy::fn_address_comparisons` #![warn(clippy::useless_conversion)] //~ ERROR: lint `clippy::identity_conversion` #![warn(clippy::redundant_pattern_matching)] //~ ERROR: lint `clippy::if_let_redundant_pattern_matching` #![warn(clippy::match_result_ok)] //~ ERROR: lint `clippy::if_let_some_result` diff --git a/tests/ui/rename.rs b/tests/ui/rename.rs index 2ac59718786..7a78a5d280d 100644 --- a/tests/ui/rename.rs +++ b/tests/ui/rename.rs @@ -59,6 +59,7 @@ #![allow(unknown_lints)] #![allow(unused_labels)] #![allow(ambiguous_wide_pointer_comparisons)] +#![allow(unpredictable_function_pointer_comparisons)] #![allow(clippy::reversed_empty_ranges)] #![warn(clippy::almost_complete_letter_range)] //~ ERROR: lint `clippy::almost_complete_letter_range` #![warn(clippy::blacklisted_name)] //~ ERROR: lint `clippy::blacklisted_name` @@ -74,6 +75,7 @@ #![warn(clippy::eval_order_dependence)] //~ ERROR: lint `clippy::eval_order_dependence` #![warn(clippy::find_map)] //~ ERROR: lint `clippy::find_map` #![warn(clippy::filter_map)] //~ ERROR: lint `clippy::filter_map` +#![warn(clippy::fn_address_comparisons)] //~ ERROR: lint `clippy::fn_address_comparisons` #![warn(clippy::identity_conversion)] //~ ERROR: lint `clippy::identity_conversion` #![warn(clippy::if_let_redundant_pattern_matching)] //~ ERROR: lint `clippy::if_let_redundant_pattern_matching` #![warn(clippy::if_let_some_result)] //~ ERROR: lint `clippy::if_let_some_result` diff --git a/tests/ui/rename.stderr b/tests/ui/rename.stderr index a5ae727b7ee..dc24bc16d0e 100644 --- a/tests/ui/rename.stderr +++ b/tests/ui/rename.stderr @@ -1,5 +1,5 @@ error: lint `clippy::almost_complete_letter_range` has been renamed to `clippy::almost_complete_range` - --> tests/ui/rename.rs:63:9 + --> tests/ui/rename.rs:64:9 | LL | #![warn(clippy::almost_complete_letter_range)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::almost_complete_range` @@ -8,394 +8,400 @@ LL | #![warn(clippy::almost_complete_letter_range)] = help: to override `-D warnings` add `#[allow(renamed_and_removed_lints)]` error: lint `clippy::blacklisted_name` has been renamed to `clippy::disallowed_names` - --> tests/ui/rename.rs:64:9 + --> tests/ui/rename.rs:65:9 | LL | #![warn(clippy::blacklisted_name)] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_names` error: lint `clippy::block_in_if_condition_expr` has been renamed to `clippy::blocks_in_conditions` - --> tests/ui/rename.rs:65:9 + --> tests/ui/rename.rs:66:9 | LL | #![warn(clippy::block_in_if_condition_expr)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_conditions` error: lint `clippy::block_in_if_condition_stmt` has been renamed to `clippy::blocks_in_conditions` - --> tests/ui/rename.rs:66:9 + --> tests/ui/rename.rs:67:9 | LL | #![warn(clippy::block_in_if_condition_stmt)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_conditions` error: lint `clippy::blocks_in_if_conditions` has been renamed to `clippy::blocks_in_conditions` - --> tests/ui/rename.rs:67:9 + --> tests/ui/rename.rs:68:9 | LL | #![warn(clippy::blocks_in_if_conditions)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_conditions` error: lint `clippy::box_vec` has been renamed to `clippy::box_collection` - --> tests/ui/rename.rs:68:9 + --> tests/ui/rename.rs:69:9 | LL | #![warn(clippy::box_vec)] | ^^^^^^^^^^^^^^^ help: use the new name: `clippy::box_collection` error: lint `clippy::const_static_lifetime` has been renamed to `clippy::redundant_static_lifetimes` - --> tests/ui/rename.rs:69:9 + --> tests/ui/rename.rs:70:9 | LL | #![warn(clippy::const_static_lifetime)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::redundant_static_lifetimes` error: lint `clippy::cyclomatic_complexity` has been renamed to `clippy::cognitive_complexity` - --> tests/ui/rename.rs:70:9 + --> tests/ui/rename.rs:71:9 | LL | #![warn(clippy::cyclomatic_complexity)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::cognitive_complexity` error: lint `clippy::derive_hash_xor_eq` has been renamed to `clippy::derived_hash_with_manual_eq` - --> tests/ui/rename.rs:71:9 + --> tests/ui/rename.rs:72:9 | LL | #![warn(clippy::derive_hash_xor_eq)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::derived_hash_with_manual_eq` error: lint `clippy::disallowed_method` has been renamed to `clippy::disallowed_methods` - --> tests/ui/rename.rs:72:9 + --> tests/ui/rename.rs:73:9 | LL | #![warn(clippy::disallowed_method)] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_methods` error: lint `clippy::disallowed_type` has been renamed to `clippy::disallowed_types` - --> tests/ui/rename.rs:73:9 + --> tests/ui/rename.rs:74:9 | LL | #![warn(clippy::disallowed_type)] | ^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_types` error: lint `clippy::eval_order_dependence` has been renamed to `clippy::mixed_read_write_in_expression` - --> tests/ui/rename.rs:74:9 + --> tests/ui/rename.rs:75:9 | LL | #![warn(clippy::eval_order_dependence)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::mixed_read_write_in_expression` error: lint `clippy::find_map` has been renamed to `clippy::manual_find_map` - --> tests/ui/rename.rs:75:9 + --> tests/ui/rename.rs:76:9 | LL | #![warn(clippy::find_map)] | ^^^^^^^^^^^^^^^^ help: use the new name: `clippy::manual_find_map` error: lint `clippy::filter_map` has been renamed to `clippy::manual_filter_map` - --> tests/ui/rename.rs:76:9 + --> tests/ui/rename.rs:77:9 | LL | #![warn(clippy::filter_map)] | ^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::manual_filter_map` +error: lint `clippy::fn_address_comparisons` has been renamed to `unpredictable_function_pointer_comparisons` + --> tests/ui/rename.rs:78:9 + | +LL | #![warn(clippy::fn_address_comparisons)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unpredictable_function_pointer_comparisons` + error: lint `clippy::identity_conversion` has been renamed to `clippy::useless_conversion` - --> tests/ui/rename.rs:77:9 + --> tests/ui/rename.rs:79:9 | LL | #![warn(clippy::identity_conversion)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::useless_conversion` error: lint `clippy::if_let_redundant_pattern_matching` has been renamed to `clippy::redundant_pattern_matching` - --> tests/ui/rename.rs:78:9 + --> tests/ui/rename.rs:80:9 | LL | #![warn(clippy::if_let_redundant_pattern_matching)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::redundant_pattern_matching` error: lint `clippy::if_let_some_result` has been renamed to `clippy::match_result_ok` - --> tests/ui/rename.rs:79:9 + --> tests/ui/rename.rs:81:9 | LL | #![warn(clippy::if_let_some_result)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::match_result_ok` error: lint `clippy::incorrect_clone_impl_on_copy_type` has been renamed to `clippy::non_canonical_clone_impl` - --> tests/ui/rename.rs:80:9 + --> tests/ui/rename.rs:82:9 | LL | #![warn(clippy::incorrect_clone_impl_on_copy_type)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::non_canonical_clone_impl` error: lint `clippy::incorrect_partial_ord_impl_on_ord_type` has been renamed to `clippy::non_canonical_partial_ord_impl` - --> tests/ui/rename.rs:81:9 + --> tests/ui/rename.rs:83:9 | LL | #![warn(clippy::incorrect_partial_ord_impl_on_ord_type)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::non_canonical_partial_ord_impl` error: lint `clippy::integer_arithmetic` has been renamed to `clippy::arithmetic_side_effects` - --> tests/ui/rename.rs:82:9 + --> tests/ui/rename.rs:84:9 | LL | #![warn(clippy::integer_arithmetic)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::arithmetic_side_effects` error: lint `clippy::logic_bug` has been renamed to `clippy::overly_complex_bool_expr` - --> tests/ui/rename.rs:83:9 + --> tests/ui/rename.rs:85:9 | LL | #![warn(clippy::logic_bug)] | ^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::overly_complex_bool_expr` error: lint `clippy::new_without_default_derive` has been renamed to `clippy::new_without_default` - --> tests/ui/rename.rs:84:9 + --> tests/ui/rename.rs:86:9 | LL | #![warn(clippy::new_without_default_derive)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::new_without_default` error: lint `clippy::option_and_then_some` has been renamed to `clippy::bind_instead_of_map` - --> tests/ui/rename.rs:85:9 + --> tests/ui/rename.rs:87:9 | LL | #![warn(clippy::option_and_then_some)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::bind_instead_of_map` error: lint `clippy::option_expect_used` has been renamed to `clippy::expect_used` - --> tests/ui/rename.rs:86:9 + --> tests/ui/rename.rs:88:9 | LL | #![warn(clippy::option_expect_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::expect_used` error: lint `clippy::option_map_unwrap_or` has been renamed to `clippy::map_unwrap_or` - --> tests/ui/rename.rs:87:9 + --> tests/ui/rename.rs:89:9 | LL | #![warn(clippy::option_map_unwrap_or)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or` error: lint `clippy::option_map_unwrap_or_else` has been renamed to `clippy::map_unwrap_or` - --> tests/ui/rename.rs:88:9 + --> tests/ui/rename.rs:90:9 | LL | #![warn(clippy::option_map_unwrap_or_else)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or` error: lint `clippy::option_unwrap_used` has been renamed to `clippy::unwrap_used` - --> tests/ui/rename.rs:89:9 + --> tests/ui/rename.rs:91:9 | LL | #![warn(clippy::option_unwrap_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_used` error: lint `clippy::overflow_check_conditional` has been renamed to `clippy::panicking_overflow_checks` - --> tests/ui/rename.rs:90:9 + --> tests/ui/rename.rs:92:9 | LL | #![warn(clippy::overflow_check_conditional)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::panicking_overflow_checks` error: lint `clippy::ref_in_deref` has been renamed to `clippy::needless_borrow` - --> tests/ui/rename.rs:91:9 + --> tests/ui/rename.rs:93:9 | LL | #![warn(clippy::ref_in_deref)] | ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::needless_borrow` error: lint `clippy::result_expect_used` has been renamed to `clippy::expect_used` - --> tests/ui/rename.rs:92:9 + --> tests/ui/rename.rs:94:9 | LL | #![warn(clippy::result_expect_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::expect_used` error: lint `clippy::result_map_unwrap_or_else` has been renamed to `clippy::map_unwrap_or` - --> tests/ui/rename.rs:93:9 + --> tests/ui/rename.rs:95:9 | LL | #![warn(clippy::result_map_unwrap_or_else)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or` error: lint `clippy::result_unwrap_used` has been renamed to `clippy::unwrap_used` - --> tests/ui/rename.rs:94:9 + --> tests/ui/rename.rs:96:9 | LL | #![warn(clippy::result_unwrap_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_used` error: lint `clippy::single_char_push_str` has been renamed to `clippy::single_char_add_str` - --> tests/ui/rename.rs:95:9 + --> tests/ui/rename.rs:97:9 | LL | #![warn(clippy::single_char_push_str)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::single_char_add_str` error: lint `clippy::stutter` has been renamed to `clippy::module_name_repetitions` - --> tests/ui/rename.rs:96:9 + --> tests/ui/rename.rs:98:9 | LL | #![warn(clippy::stutter)] | ^^^^^^^^^^^^^^^ help: use the new name: `clippy::module_name_repetitions` error: lint `clippy::thread_local_initializer_can_be_made_const` has been renamed to `clippy::missing_const_for_thread_local` - --> tests/ui/rename.rs:97:9 + --> tests/ui/rename.rs:99:9 | LL | #![warn(clippy::thread_local_initializer_can_be_made_const)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::missing_const_for_thread_local` error: lint `clippy::to_string_in_display` has been renamed to `clippy::recursive_format_impl` - --> tests/ui/rename.rs:98:9 + --> tests/ui/rename.rs:100:9 | LL | #![warn(clippy::to_string_in_display)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::recursive_format_impl` error: lint `clippy::unwrap_or_else_default` has been renamed to `clippy::unwrap_or_default` - --> tests/ui/rename.rs:99:9 + --> tests/ui/rename.rs:101:9 | LL | #![warn(clippy::unwrap_or_else_default)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_or_default` error: lint `clippy::zero_width_space` has been renamed to `clippy::invisible_characters` - --> tests/ui/rename.rs:100:9 + --> tests/ui/rename.rs:102:9 | LL | #![warn(clippy::zero_width_space)] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::invisible_characters` error: lint `clippy::cast_ref_to_mut` has been renamed to `invalid_reference_casting` - --> tests/ui/rename.rs:101:9 + --> tests/ui/rename.rs:103:9 | LL | #![warn(clippy::cast_ref_to_mut)] | ^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_reference_casting` error: lint `clippy::clone_double_ref` has been renamed to `suspicious_double_ref_op` - --> tests/ui/rename.rs:102:9 + --> tests/ui/rename.rs:104:9 | LL | #![warn(clippy::clone_double_ref)] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `suspicious_double_ref_op` error: lint `clippy::cmp_nan` has been renamed to `invalid_nan_comparisons` - --> tests/ui/rename.rs:103:9 + --> tests/ui/rename.rs:105:9 | LL | #![warn(clippy::cmp_nan)] | ^^^^^^^^^^^^^^^ help: use the new name: `invalid_nan_comparisons` error: lint `clippy::drop_bounds` has been renamed to `drop_bounds` - --> tests/ui/rename.rs:104:9 + --> tests/ui/rename.rs:106:9 | LL | #![warn(clippy::drop_bounds)] | ^^^^^^^^^^^^^^^^^^^ help: use the new name: `drop_bounds` error: lint `clippy::drop_copy` has been renamed to `dropping_copy_types` - --> tests/ui/rename.rs:105:9 + --> tests/ui/rename.rs:107:9 | LL | #![warn(clippy::drop_copy)] | ^^^^^^^^^^^^^^^^^ help: use the new name: `dropping_copy_types` error: lint `clippy::drop_ref` has been renamed to `dropping_references` - --> tests/ui/rename.rs:106:9 + --> tests/ui/rename.rs:108:9 | LL | #![warn(clippy::drop_ref)] | ^^^^^^^^^^^^^^^^ help: use the new name: `dropping_references` error: lint `clippy::fn_null_check` has been renamed to `useless_ptr_null_checks` - --> tests/ui/rename.rs:107:9 + --> tests/ui/rename.rs:109:9 | LL | #![warn(clippy::fn_null_check)] | ^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `useless_ptr_null_checks` error: lint `clippy::for_loop_over_option` has been renamed to `for_loops_over_fallibles` - --> tests/ui/rename.rs:108:9 + --> tests/ui/rename.rs:110:9 | LL | #![warn(clippy::for_loop_over_option)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles` error: lint `clippy::for_loop_over_result` has been renamed to `for_loops_over_fallibles` - --> tests/ui/rename.rs:109:9 + --> tests/ui/rename.rs:111:9 | LL | #![warn(clippy::for_loop_over_result)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles` error: lint `clippy::for_loops_over_fallibles` has been renamed to `for_loops_over_fallibles` - --> tests/ui/rename.rs:110:9 + --> tests/ui/rename.rs:112:9 | LL | #![warn(clippy::for_loops_over_fallibles)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles` error: lint `clippy::forget_copy` has been renamed to `forgetting_copy_types` - --> tests/ui/rename.rs:111:9 + --> tests/ui/rename.rs:113:9 | LL | #![warn(clippy::forget_copy)] | ^^^^^^^^^^^^^^^^^^^ help: use the new name: `forgetting_copy_types` error: lint `clippy::forget_ref` has been renamed to `forgetting_references` - --> tests/ui/rename.rs:112:9 + --> tests/ui/rename.rs:114:9 | LL | #![warn(clippy::forget_ref)] | ^^^^^^^^^^^^^^^^^^ help: use the new name: `forgetting_references` error: lint `clippy::into_iter_on_array` has been renamed to `array_into_iter` - --> tests/ui/rename.rs:113:9 + --> tests/ui/rename.rs:115:9 | LL | #![warn(clippy::into_iter_on_array)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `array_into_iter` error: lint `clippy::invalid_atomic_ordering` has been renamed to `invalid_atomic_ordering` - --> tests/ui/rename.rs:114:9 + --> tests/ui/rename.rs:116:9 | LL | #![warn(clippy::invalid_atomic_ordering)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_atomic_ordering` error: lint `clippy::invalid_ref` has been renamed to `invalid_value` - --> tests/ui/rename.rs:115:9 + --> tests/ui/rename.rs:117:9 | LL | #![warn(clippy::invalid_ref)] | ^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_value` error: lint `clippy::invalid_utf8_in_unchecked` has been renamed to `invalid_from_utf8_unchecked` - --> tests/ui/rename.rs:116:9 + --> tests/ui/rename.rs:118:9 | LL | #![warn(clippy::invalid_utf8_in_unchecked)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_from_utf8_unchecked` error: lint `clippy::let_underscore_drop` has been renamed to `let_underscore_drop` - --> tests/ui/rename.rs:117:9 + --> tests/ui/rename.rs:119:9 | LL | #![warn(clippy::let_underscore_drop)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `let_underscore_drop` error: lint `clippy::maybe_misused_cfg` has been renamed to `unexpected_cfgs` - --> tests/ui/rename.rs:118:9 + --> tests/ui/rename.rs:120:9 | LL | #![warn(clippy::maybe_misused_cfg)] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unexpected_cfgs` error: lint `clippy::mem_discriminant_non_enum` has been renamed to `enum_intrinsics_non_enums` - --> tests/ui/rename.rs:119:9 + --> tests/ui/rename.rs:121:9 | LL | #![warn(clippy::mem_discriminant_non_enum)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `enum_intrinsics_non_enums` error: lint `clippy::mismatched_target_os` has been renamed to `unexpected_cfgs` - --> tests/ui/rename.rs:120:9 + --> tests/ui/rename.rs:122:9 | LL | #![warn(clippy::mismatched_target_os)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unexpected_cfgs` error: lint `clippy::panic_params` has been renamed to `non_fmt_panics` - --> tests/ui/rename.rs:121:9 + --> tests/ui/rename.rs:123:9 | LL | #![warn(clippy::panic_params)] | ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `non_fmt_panics` error: lint `clippy::positional_named_format_parameters` has been renamed to `named_arguments_used_positionally` - --> tests/ui/rename.rs:122:9 + --> tests/ui/rename.rs:124:9 | LL | #![warn(clippy::positional_named_format_parameters)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `named_arguments_used_positionally` error: lint `clippy::temporary_cstring_as_ptr` has been renamed to `dangling_pointers_from_temporaries` - --> tests/ui/rename.rs:123:9 + --> tests/ui/rename.rs:125:9 | LL | #![warn(clippy::temporary_cstring_as_ptr)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `dangling_pointers_from_temporaries` error: lint `clippy::undropped_manually_drops` has been renamed to `undropped_manually_drops` - --> tests/ui/rename.rs:124:9 + --> tests/ui/rename.rs:126:9 | LL | #![warn(clippy::undropped_manually_drops)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `undropped_manually_drops` error: lint `clippy::unknown_clippy_lints` has been renamed to `unknown_lints` - --> tests/ui/rename.rs:125:9 + --> tests/ui/rename.rs:127:9 | LL | #![warn(clippy::unknown_clippy_lints)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unknown_lints` error: lint `clippy::unused_label` has been renamed to `unused_labels` - --> tests/ui/rename.rs:126:9 + --> tests/ui/rename.rs:128:9 | LL | #![warn(clippy::unused_label)] | ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unused_labels` error: lint `clippy::vtable_address_comparisons` has been renamed to `ambiguous_wide_pointer_comparisons` - --> tests/ui/rename.rs:127:9 + --> tests/ui/rename.rs:129:9 | LL | #![warn(clippy::vtable_address_comparisons)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `ambiguous_wide_pointer_comparisons` error: lint `clippy::reverse_range_loop` has been renamed to `clippy::reversed_empty_ranges` - --> tests/ui/rename.rs:128:9 + --> tests/ui/rename.rs:130:9 | LL | #![warn(clippy::reverse_range_loop)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::reversed_empty_ranges` -error: aborting due to 66 previous errors +error: aborting due to 67 previous errors -- cgit 1.4.1-3-g733a5 From 4a342df09b770931cf71c66be3a4ea560e5b4ed9 Mon Sep 17 00:00:00 2001 From: Samuel Moelius Date: Mon, 2 Dec 2024 14:22:13 -0500 Subject: Correct `report_elidable_impl_lifetimes` comment following #13752 --- clippy_lints/src/lifetimes.rs | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/clippy_lints/src/lifetimes.rs b/clippy_lints/src/lifetimes.rs index ee2e1ee32bb..8b2eee34a97 100644 --- a/clippy_lints/src/lifetimes.rs +++ b/clippy_lints/src/lifetimes.rs @@ -643,8 +643,7 @@ fn report_extra_impl_lifetimes<'tcx>(cx: &LateContext<'tcx>, impl_: &'tcx Impl<' // An `impl` lifetime is elidable if it satisfies the following conditions: // - It is used exactly once. -// - That single use is not in a bounded type or `GenericArgs` in a `WherePredicate`. (Note that -// `GenericArgs` are different from `GenericParam`s.) +// - That single use is not in a `WherePredicate`. fn report_elidable_impl_lifetimes<'tcx>( cx: &LateContext<'tcx>, impl_: &'tcx Impl<'_>, -- cgit 1.4.1-3-g733a5 From d3a7fb140c539be677db2ef0f7f93f6b5d0a19f1 Mon Sep 17 00:00:00 2001 From: Michael Howell Date: Wed, 27 Nov 2024 17:34:47 -0700 Subject: doc_lazy_continuation: Correctly count indent with backslashes changelog: [`doc_lazy_continuation`]: correctly count indent with backslashes --- clippy_lints/src/doc/mod.rs | 7 ++++++- tests/ui/doc/doc_lazy_list.fixed | 6 ++++++ tests/ui/doc/doc_lazy_list.rs | 6 ++++++ 3 files changed, 18 insertions(+), 1 deletion(-) diff --git a/clippy_lints/src/doc/mod.rs b/clippy_lints/src/doc/mod.rs index 2439ee23758..46571246052 100644 --- a/clippy_lints/src/doc/mod.rs +++ b/clippy_lints/src/doc/mod.rs @@ -948,7 +948,12 @@ fn check_doc<'a, Events: Iterator, Range 0 && doc.as_bytes().get(start - 1) == Some(&b'\\') { + // backslashes aren't in the event stream... + start -= 1; + } + start - range.start } } else { 0 diff --git a/tests/ui/doc/doc_lazy_list.fixed b/tests/ui/doc/doc_lazy_list.fixed index da537518a2b..0822cc7c635 100644 --- a/tests/ui/doc/doc_lazy_list.fixed +++ b/tests/ui/doc/doc_lazy_list.fixed @@ -75,3 +75,9 @@ fn seven() {} /// ] //~^ ERROR: doc list item without indentation fn eight() {} + +#[rustfmt::skip] +// https://github.com/rust-lang/rust-clippy/issues/13705 +/// - \[text in square brackets\] with a long following description +/// that goes over multiple lines +pub fn backslash_escaped_square_braces() {} diff --git a/tests/ui/doc/doc_lazy_list.rs b/tests/ui/doc/doc_lazy_list.rs index 3cc18e35780..068de140e00 100644 --- a/tests/ui/doc/doc_lazy_list.rs +++ b/tests/ui/doc/doc_lazy_list.rs @@ -75,3 +75,9 @@ fn seven() {} /// ] //~^ ERROR: doc list item without indentation fn eight() {} + +#[rustfmt::skip] +// https://github.com/rust-lang/rust-clippy/issues/13705 +/// - \[text in square brackets\] with a long following description +/// that goes over multiple lines +pub fn backslash_escaped_square_braces() {} -- cgit 1.4.1-3-g733a5 From ec243887d3524545922e340a4e55c4bd174e966e Mon Sep 17 00:00:00 2001 From: Scott Gerring Date: Tue, 3 Dec 2024 15:15:21 +0100 Subject: let_unit_value: Use multipart suggestions --- clippy_lints/src/unit_types/let_unit_value.rs | 35 +++-- tests/ui/let_unit.fixed | 196 ++++++++++++++++++++++++++ tests/ui/let_unit.rs | 2 - tests/ui/let_unit.stderr | 22 ++- 4 files changed, 228 insertions(+), 27 deletions(-) create mode 100644 tests/ui/let_unit.fixed diff --git a/clippy_lints/src/unit_types/let_unit_value.rs b/clippy_lints/src/unit_types/let_unit_value.rs index 0702f6d1e74..d2727968c0c 100644 --- a/clippy_lints/src/unit_types/let_unit_value.rs +++ b/clippy_lints/src/unit_types/let_unit_value.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::snippet_with_context; -use clippy_utils::visitors::{for_each_local_assignment, for_each_value_source, is_local_used}; +use clippy_utils::visitors::{for_each_local_assignment, for_each_value_source}; use core::ops::ControlFlow; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; @@ -71,25 +71,38 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, local: &'tcx LetStmt<'_>) { local.span, "this let-binding has unit value", |diag| { + let mut suggestions = Vec::new(); + + // Suggest omitting the `let` binding if let Some(expr) = &local.init { let mut app = Applicability::MachineApplicable; let snip = snippet_with_context(cx, expr.span, local.span.ctxt(), "()", &mut app).0; - diag.span_suggestion(local.span, "omit the `let` binding", format!("{snip};"), app); + suggestions.push((local.span, format!("{snip};"))); } - if let PatKind::Binding(_, binding_hir_id, ident, ..) = local.pat.kind + // If this is a binding pattern, we need to add suggestions to remove any usages + // of the variable + if let PatKind::Binding(_, binding_hir_id, ..) = local.pat.kind && let Some(body_id) = cx.enclosing_body.as_ref() - && let body = cx.tcx.hir().body(*body_id) - && is_local_used(cx, body, binding_hir_id) { - let identifier = ident.as_str(); + let body = cx.tcx.hir().body(*body_id); + + // Collect variable usages let mut visitor = UnitVariableCollector::new(binding_hir_id); walk_body(&mut visitor, body); - visitor.spans.into_iter().for_each(|span| { - let msg = - format!("variable `{identifier}` of type `()` can be replaced with explicit `()`"); - diag.span_suggestion(span, msg, "()", Applicability::MachineApplicable); - }); + + // Add suggestions for replacing variable usages + suggestions.extend(visitor.spans.into_iter().map(|span| (span, "()".to_string()))); + } + + // Emit appropriate diagnostic based on whether there are usages of the let binding + if !suggestions.is_empty() { + let message = if suggestions.len() == 1 { + "omit the `let` binding" + } else { + "omit the `let` binding and replace variable usages with `()`" + }; + diag.multipart_suggestion(message, suggestions, Applicability::MachineApplicable); } }, ); diff --git a/tests/ui/let_unit.fixed b/tests/ui/let_unit.fixed new file mode 100644 index 00000000000..3456e274f6a --- /dev/null +++ b/tests/ui/let_unit.fixed @@ -0,0 +1,196 @@ +#![warn(clippy::let_unit_value)] +#![allow(unused, clippy::no_effect, clippy::needless_late_init, path_statements)] + +macro_rules! let_and_return { + ($n:expr) => {{ + let ret = $n; + }}; +} + +fn main() { + println!("x"); + let _y = 1; // this is fine + let _z = ((), 1); // this as well + if true { + // do not lint this, since () is explicit + let _a = (); + let () = dummy(); + let () = (); + () = dummy(); + () = (); + let _a: () = (); + let _a: () = dummy(); + } + + consume_units_with_for_loop(); // should be fine as well + + multiline_sugg(); + + let_and_return!(()) // should be fine +} + +fn dummy() {} + +// Related to issue #1964 +fn consume_units_with_for_loop() { + // `for_let_unit` lint should not be triggered by consuming them using for loop. + let v = vec![(), (), ()]; + let mut count = 0; + for _ in v { + count += 1; + } + assert_eq!(count, 3); + + // Same for consuming from some other Iterator. + let (tx, rx) = ::std::sync::mpsc::channel(); + tx.send(()).unwrap(); + drop(tx); + + count = 0; + for _ in rx.iter() { + count += 1; + } + assert_eq!(count, 1); +} + +fn multiline_sugg() { + let v: Vec = vec![2]; + + v + .into_iter() + .map(|i| i * 2) + .filter(|i| i % 2 == 0) + .map(|_| ()) + .next() + .unwrap(); +} + +#[derive(Copy, Clone)] +pub struct ContainsUnit(()); // should be fine + +fn _returns_generic() { + fn f() -> T { + unimplemented!() + } + fn f2(_: T) -> U { + unimplemented!() + } + fn f3(x: T) -> T { + x + } + fn f5(x: bool) -> Option { + x.then(|| T::default()) + } + + let _: () = f(); + let x: () = f(); + + let _: () = f2(0i32); + let x: () = f2(0i32); + + let _: () = f3(()); + let x: () = f3(()); + + fn f4(mut x: Vec) -> T { + x.pop().unwrap() + } + let _: () = f4(vec![()]); + let x: () = f4(vec![()]); + + let _: () = { + let x = 5; + f2(x) + }; + + let _: () = if true { f() } else { f2(0) }; + let x: () = if true { f() } else { f2(0) }; + + match Some(0) { + None => f2(1), + Some(0) => f(), + Some(1) => f2(3), + Some(_) => (), + }; + + let _: () = f5(true).unwrap(); + + #[allow(clippy::let_unit_value)] + { + let x = f(); + let y; + let z; + match 0 { + 0 => { + y = f(); + z = f(); + }, + 1 => { + println!("test"); + y = f(); + z = f3(()); + }, + _ => panic!(), + } + + let x1; + let x2; + if true { + x1 = f(); + x2 = x1; + } else { + x2 = f(); + x1 = x2; + } + + let opt; + match f5(true) { + Some(x) => opt = x, + None => panic!(), + }; + + #[warn(clippy::let_unit_value)] + { + let _: () = x; + let _: () = y; + let _: () = z; + let _: () = x1; + let _: () = x2; + let _: () = opt; + } + } + + let () = f(); +} + +fn attributes() { + fn f() {} + + #[allow(clippy::let_unit_value)] + let _ = f(); + #[expect(clippy::let_unit_value)] + let _ = f(); +} + +async fn issue10433() { + let _pending: () = std::future::pending().await; +} + +pub async fn issue11502(a: ()) {} + +pub fn issue12594() { + fn returns_unit() {} + + fn returns_result(res: T) -> Result { + Ok(res) + } + + fn actual_test() { + // create first a unit value'd value + returns_unit(); + returns_result(()).unwrap(); + returns_result(()).unwrap(); + // make sure we replace only the first variable + let res = 1; + returns_result(res).unwrap(); + } +} diff --git a/tests/ui/let_unit.rs b/tests/ui/let_unit.rs index 530103ffaf6..e2dafbcb771 100644 --- a/tests/ui/let_unit.rs +++ b/tests/ui/let_unit.rs @@ -1,8 +1,6 @@ #![warn(clippy::let_unit_value)] #![allow(unused, clippy::no_effect, clippy::needless_late_init, path_statements)] -//@no-rustfix: need to change the suggestion to a multipart suggestion - macro_rules! let_and_return { ($n:expr) => {{ let ret = $n; diff --git a/tests/ui/let_unit.stderr b/tests/ui/let_unit.stderr index 6f149454af2..a2f368f22e5 100644 --- a/tests/ui/let_unit.stderr +++ b/tests/ui/let_unit.stderr @@ -1,5 +1,5 @@ error: this let-binding has unit value - --> tests/ui/let_unit.rs:13:5 + --> tests/ui/let_unit.rs:11:5 | LL | let _x = println!("x"); | ^^^^^^^^^^^^^^^^^^^^^^^ help: omit the `let` binding: `println!("x");` @@ -8,7 +8,7 @@ LL | let _x = println!("x"); = help: to override `-D warnings` add `#[allow(clippy::let_unit_value)]` error: this let-binding has unit value - --> tests/ui/let_unit.rs:61:5 + --> tests/ui/let_unit.rs:59:5 | LL | / let _ = v LL | | .into_iter() @@ -31,7 +31,7 @@ LL + .unwrap(); | error: this let-binding has unit value - --> tests/ui/let_unit.rs:110:5 + --> tests/ui/let_unit.rs:108:5 | LL | / let x = match Some(0) { LL | | None => f2(1), @@ -52,23 +52,17 @@ LL + }; | error: this let-binding has unit value - --> tests/ui/let_unit.rs:191:9 + --> tests/ui/let_unit.rs:189:9 | LL | let res = returns_unit(); | ^^^^^^^^^^^^^^^^^^^^^^^^^ | -help: omit the `let` binding - | -LL | returns_unit(); - | -help: variable `res` of type `()` can be replaced with explicit `()` +help: omit the `let` binding and replace variable usages with `()` | -LL | returns_result(()).unwrap(); - | ~~ -help: variable `res` of type `()` can be replaced with explicit `()` +LL ~ returns_unit(); +LL ~ returns_result(()).unwrap(); +LL ~ returns_result(()).unwrap(); | -LL | returns_result(()).unwrap(); - | ~~ error: aborting due to 4 previous errors -- cgit 1.4.1-3-g733a5 From e493664e1586ece0cbb17d31de6f5d06a496937d Mon Sep 17 00:00:00 2001 From: Scott Gerring Date: Tue, 3 Dec 2024 15:29:41 +0100 Subject: index_refutable_slice: use multipart suggestions --- clippy_lints/src/index_refutable_slice.rs | 36 ++--- .../index_refutable_slice.fixed | 24 +++ .../index_refutable_slice.rs | 2 - .../index_refutable_slice.stderr | 14 +- .../if_let_slice_binding.fixed | 177 +++++++++++++++++++++ .../index_refutable_slice/if_let_slice_binding.rs | 2 - .../if_let_slice_binding.stderr | 122 ++++++-------- .../slice_indexing_in_macro.fixed | 29 ++++ .../slice_indexing_in_macro.rs | 2 - .../slice_indexing_in_macro.stderr | 13 +- 10 files changed, 311 insertions(+), 110 deletions(-) create mode 100644 tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.fixed create mode 100644 tests/ui/index_refutable_slice/if_let_slice_binding.fixed create mode 100644 tests/ui/index_refutable_slice/slice_indexing_in_macro.fixed diff --git a/clippy_lints/src/index_refutable_slice.rs b/clippy_lints/src/index_refutable_slice.rs index c2030a5ab09..15650c4f732 100644 --- a/clippy_lints/src/index_refutable_slice.rs +++ b/clippy_lints/src/index_refutable_slice.rs @@ -135,7 +135,7 @@ fn lint_slice(cx: &LateContext<'_>, slice: &SliceLintInformation) { .map(|(index, _)| *index) .collect::>(); - let value_name = |index| format!("{}_{index}", slice.ident.name); + let value_name = |index| format!("{}_{}", slice.ident.name, index); if let Some(max_index) = used_indices.iter().max() { let opt_ref = if slice.needs_ref { "ref " } else { "" }; @@ -150,6 +150,18 @@ fn lint_slice(cx: &LateContext<'_>, slice: &SliceLintInformation) { .collect::>(); let pat_sugg = format!("[{}, ..]", pat_sugg_idents.join(", ")); + let mut suggestions = Vec::new(); + + // Add the binding pattern suggestion + if !slice.pattern_spans.is_empty() { + suggestions.extend(slice.pattern_spans.iter().map(|span| (*span, pat_sugg.clone()))); + } + + // Add the index replacement suggestions + if !slice.index_use.is_empty() { + suggestions.extend(slice.index_use.iter().map(|(index, span)| (*span, value_name(*index)))); + } + span_lint_and_then( cx, INDEX_REFUTABLE_SLICE, @@ -157,28 +169,10 @@ fn lint_slice(cx: &LateContext<'_>, slice: &SliceLintInformation) { "this binding can be a slice pattern to avoid indexing", |diag| { diag.multipart_suggestion( - "try using a slice pattern here", - slice - .pattern_spans - .iter() - .map(|span| (*span, pat_sugg.clone())) - .collect(), + "replace the binding and indexed access with a slice pattern", + suggestions, Applicability::MaybeIncorrect, ); - - diag.multipart_suggestion( - "and replace the index expressions here", - slice - .index_use - .iter() - .map(|(index, span)| (*span, value_name(*index))) - .collect(), - Applicability::MaybeIncorrect, - ); - - // The lint message doesn't contain a warning about the removed index expression, - // since `filter_lintable_slices` will only return slices where all access indices - // are known at compile time. Therefore, they can be removed without side effects. }, ); } diff --git a/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.fixed b/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.fixed new file mode 100644 index 00000000000..36540bf1dcf --- /dev/null +++ b/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.fixed @@ -0,0 +1,24 @@ +#![deny(clippy::index_refutable_slice)] + +fn below_limit() { + let slice: Option<&[u32]> = Some(&[1, 2, 3]); + if let Some([_, _, _, _, _, _, _, slice_7, ..]) = slice { + //~^ ERROR: binding can be a slice pattern + // This would usually not be linted but is included now due to the + // index limit in the config file + println!("{}", slice_7); + } +} + +fn above_limit() { + let slice: Option<&[u32]> = Some(&[1, 2, 3]); + if let Some(slice) = slice { + // This will not be linted as 8 is above the limit + println!("{}", slice[8]); + } +} + +fn main() { + below_limit(); + above_limit(); +} diff --git a/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.rs b/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.rs index e64c8ff3290..da76bb20fd9 100644 --- a/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.rs +++ b/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.rs @@ -1,7 +1,5 @@ #![deny(clippy::index_refutable_slice)] -//@no-rustfix: need to change the suggestion to a multipart suggestion - fn below_limit() { let slice: Option<&[u32]> = Some(&[1, 2, 3]); if let Some(slice) = slice { diff --git a/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.stderr b/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.stderr index 3ea600c7d7b..022deb330e6 100644 --- a/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.stderr +++ b/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.stderr @@ -1,5 +1,5 @@ error: this binding can be a slice pattern to avoid indexing - --> tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.rs:7:17 + --> tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.rs:5:17 | LL | if let Some(slice) = slice { | ^^^^^ @@ -9,14 +9,14 @@ note: the lint level is defined here | LL | #![deny(clippy::index_refutable_slice)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -help: try using a slice pattern here +help: replace the binding and indexed access with a slice pattern | -LL | if let Some([_, _, _, _, _, _, _, slice_7, ..]) = slice { - | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -help: and replace the index expressions here +LL ~ if let Some([_, _, _, _, _, _, _, slice_7, ..]) = slice { +LL | +LL | // This would usually not be linted but is included now due to the +LL | // index limit in the config file +LL ~ println!("{}", slice_7); | -LL | println!("{}", slice_7); - | ~~~~~~~ error: aborting due to 1 previous error diff --git a/tests/ui/index_refutable_slice/if_let_slice_binding.fixed b/tests/ui/index_refutable_slice/if_let_slice_binding.fixed new file mode 100644 index 00000000000..ea8e56e18b0 --- /dev/null +++ b/tests/ui/index_refutable_slice/if_let_slice_binding.fixed @@ -0,0 +1,177 @@ +#![deny(clippy::index_refutable_slice)] +#![allow(clippy::uninlined_format_args, clippy::needless_lifetimes)] + +enum SomeEnum { + One(T), + Two(T), + Three(T), + Four(T), +} + +fn lintable_examples() { + // Try with reference + let slice: Option<&[u32]> = Some(&[1, 2, 3]); + if let Some([slice_0, ..]) = slice { + //~^ ERROR: this binding can be a slice pattern to avoid indexing + println!("{}", slice_0); + } + + // Try with copy + let slice: Option<[u32; 3]> = Some([1, 2, 3]); + if let Some([slice_0, ..]) = slice { + //~^ ERROR: this binding can be a slice pattern to avoid indexing + println!("{}", slice_0); + } + + // Try with long slice and small indices + let slice: Option<[u32; 9]> = Some([1, 2, 3, 4, 5, 6, 7, 8, 9]); + if let Some([slice_0, _, slice_2, ..]) = slice { + //~^ ERROR: this binding can be a slice pattern to avoid indexing + println!("{}", slice_2); + println!("{}", slice_0); + } + + // Multiple bindings + let slice_wrapped: SomeEnum<[u32; 3]> = SomeEnum::One([5, 6, 7]); + if let SomeEnum::One([slice_0, ..]) | SomeEnum::Three([slice_0, ..]) = slice_wrapped { + //~^ ERROR: this binding can be a slice pattern to avoid indexing + println!("{}", slice_0); + } + + // Two lintable slices in one if let + let a_wrapped: SomeEnum<[u32; 3]> = SomeEnum::One([9, 5, 1]); + let b_wrapped: Option<[u32; 2]> = Some([4, 6]); + if let (SomeEnum::Three([_, _, a_2, ..]), Some([_, b_1, ..])) = (a_wrapped, b_wrapped) { + //~^ ERROR: this binding can be a slice pattern to avoid indexing + //~| ERROR: this binding can be a slice pattern to avoid indexing + println!("{} -> {}", a_2, b_1); + } + + // This requires the slice values to be borrowed as the slice values can only be + // borrowed and `String` doesn't implement copy + let slice: Option<[String; 2]> = Some([String::from("1"), String::from("2")]); + if let Some([_, ref slice_1, ..]) = slice { + //~^ ERROR: this binding can be a slice pattern to avoid indexing + println!("{:?}", slice_1); + } + println!("{:?}", slice); + + // This should not suggest using the `ref` keyword as the scrutinee is already + // a reference + let slice: Option<[String; 2]> = Some([String::from("1"), String::from("2")]); + if let Some([slice_0, ..]) = &slice { + //~^ ERROR: this binding can be a slice pattern to avoid indexing + println!("{:?}", slice_0); + } + println!("{:?}", slice); +} + +fn slice_index_above_limit() { + let slice: Option<&[u32]> = Some(&[1, 2, 3]); + + if let Some(slice) = slice { + // Would cause a panic, IDK + println!("{}", slice[7]); + } +} + +fn slice_is_used() { + let slice: Option<&[u32]> = Some(&[1, 2, 3]); + if let Some(slice) = slice { + println!("{:?}", slice.len()); + } + + let slice: Option<&[u32]> = Some(&[1, 2, 3]); + if let Some(slice) = slice { + println!("{:?}", slice.to_vec()); + } + + let opt: Option<[String; 2]> = Some([String::from("Hello"), String::from("world")]); + if let Some(slice) = opt { + if !slice.is_empty() { + println!("first: {}", slice[0]); + } + } +} + +/// The slice is used by an external function and should therefore not be linted +fn check_slice_as_arg() { + fn is_interesting(slice: &[T; 2]) -> bool { + !slice.is_empty() + } + + let slice_wrapped: Option<[String; 2]> = Some([String::from("Hello"), String::from("world")]); + if let Some(slice) = &slice_wrapped { + if is_interesting(slice) { + println!("This is interesting {}", slice[0]); + } + } + println!("{:?}", slice_wrapped); +} + +fn check_slice_in_struct() { + #[derive(Debug)] + struct Wrapper<'a> { + inner: Option<&'a [String]>, + is_awesome: bool, + } + + impl<'a> Wrapper<'a> { + fn is_super_awesome(&self) -> bool { + self.is_awesome + } + } + + let inner = &[String::from("New"), String::from("World")]; + let wrap = Wrapper { + inner: Some(inner), + is_awesome: true, + }; + + // Test 1: Field access + if let Some([slice_0, ..]) = wrap.inner { + //~^ ERROR: this binding can be a slice pattern to avoid indexing + if wrap.is_awesome { + println!("This is awesome! {}", slice_0); + } + } + + // Test 2: function access + if let Some([slice_0, ..]) = wrap.inner { + //~^ ERROR: this binding can be a slice pattern to avoid indexing + if wrap.is_super_awesome() { + println!("This is super awesome! {}", slice_0); + } + } + println!("Complete wrap: {:?}", wrap); +} + +/// This would be a nice additional feature to have in the future, but adding it +/// now would make the PR too large. This is therefore only a test that we don't +/// lint cases we can't make a reasonable suggestion for +fn mutable_slice_index() { + // Mut access + let mut slice: Option<[String; 1]> = Some([String::from("Penguin")]); + if let Some(ref mut slice) = slice { + slice[0] = String::from("Mr. Penguin"); + } + println!("Use after modification: {:?}", slice); + + // Mut access on reference + let mut slice: Option<[String; 1]> = Some([String::from("Cat")]); + if let Some(slice) = &mut slice { + slice[0] = String::from("Lord Meow Meow"); + } + println!("Use after modification: {:?}", slice); +} + +/// The lint will ignore bindings with sub patterns as it would be hard +/// to build correct suggestions for these instances :) +fn binding_with_sub_pattern() { + let slice: Option<&[u32]> = Some(&[1, 2, 3]); + if let Some(slice @ [_, _, _]) = slice { + println!("{:?}", slice[2]); + } +} + +fn main() {} diff --git a/tests/ui/index_refutable_slice/if_let_slice_binding.rs b/tests/ui/index_refutable_slice/if_let_slice_binding.rs index a4cb50bd682..1c1d1c4cbe4 100644 --- a/tests/ui/index_refutable_slice/if_let_slice_binding.rs +++ b/tests/ui/index_refutable_slice/if_let_slice_binding.rs @@ -1,8 +1,6 @@ #![deny(clippy::index_refutable_slice)] #![allow(clippy::uninlined_format_args, clippy::needless_lifetimes)] -//@no-rustfix: need to change the suggestion to a multipart suggestion - enum SomeEnum { One(T), Two(T), diff --git a/tests/ui/index_refutable_slice/if_let_slice_binding.stderr b/tests/ui/index_refutable_slice/if_let_slice_binding.stderr index 8819cb0e28b..14ee2e54cab 100644 --- a/tests/ui/index_refutable_slice/if_let_slice_binding.stderr +++ b/tests/ui/index_refutable_slice/if_let_slice_binding.stderr @@ -1,5 +1,5 @@ error: this binding can be a slice pattern to avoid indexing - --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:16:17 + --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:14:17 | LL | if let Some(slice) = slice { | ^^^^^ @@ -9,150 +9,134 @@ note: the lint level is defined here | LL | #![deny(clippy::index_refutable_slice)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -help: try using a slice pattern here +help: replace the binding and indexed access with a slice pattern | -LL | if let Some([slice_0, ..]) = slice { - | ~~~~~~~~~~~~~ -help: and replace the index expressions here +LL ~ if let Some([slice_0, ..]) = slice { +LL | +LL ~ println!("{}", slice_0); | -LL | println!("{}", slice_0); - | ~~~~~~~ error: this binding can be a slice pattern to avoid indexing - --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:23:17 + --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:21:17 | LL | if let Some(slice) = slice { | ^^^^^ | -help: try using a slice pattern here +help: replace the binding and indexed access with a slice pattern | -LL | if let Some([slice_0, ..]) = slice { - | ~~~~~~~~~~~~~ -help: and replace the index expressions here +LL ~ if let Some([slice_0, ..]) = slice { +LL | +LL ~ println!("{}", slice_0); | -LL | println!("{}", slice_0); - | ~~~~~~~ error: this binding can be a slice pattern to avoid indexing - --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:30:17 + --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:28:17 | LL | if let Some(slice) = slice { | ^^^^^ | -help: try using a slice pattern here - | -LL | if let Some([slice_0, _, slice_2, ..]) = slice { - | ~~~~~~~~~~~~~~~~~~~~~~~~~ -help: and replace the index expressions here +help: replace the binding and indexed access with a slice pattern | +LL ~ if let Some([slice_0, _, slice_2, ..]) = slice { +LL | LL ~ println!("{}", slice_2); LL ~ println!("{}", slice_0); | error: this binding can be a slice pattern to avoid indexing - --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:38:26 + --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:36:26 | LL | if let SomeEnum::One(slice) | SomeEnum::Three(slice) = slice_wrapped { | ^^^^^ | -help: try using a slice pattern here +help: replace the binding and indexed access with a slice pattern | -LL | if let SomeEnum::One([slice_0, ..]) | SomeEnum::Three([slice_0, ..]) = slice_wrapped { - | ~~~~~~~~~~~~~ ~~~~~~~~~~~~~ -help: and replace the index expressions here +LL ~ if let SomeEnum::One([slice_0, ..]) | SomeEnum::Three([slice_0, ..]) = slice_wrapped { +LL | +LL ~ println!("{}", slice_0); | -LL | println!("{}", slice_0); - | ~~~~~~~ error: this binding can be a slice pattern to avoid indexing - --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:46:29 + --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:44:29 | LL | if let (SomeEnum::Three(a), Some(b)) = (a_wrapped, b_wrapped) { | ^ | -help: try using a slice pattern here +help: replace the binding and indexed access with a slice pattern | -LL | if let (SomeEnum::Three([_, _, a_2, ..]), Some(b)) = (a_wrapped, b_wrapped) { - | ~~~~~~~~~~~~~~~ -help: and replace the index expressions here +LL ~ if let (SomeEnum::Three([_, _, a_2, ..]), Some(b)) = (a_wrapped, b_wrapped) { +LL | +LL | +LL ~ println!("{} -> {}", a_2, b[1]); | -LL | println!("{} -> {}", a_2, b[1]); - | ~~~ error: this binding can be a slice pattern to avoid indexing - --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:46:38 + --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:44:38 | LL | if let (SomeEnum::Three(a), Some(b)) = (a_wrapped, b_wrapped) { | ^ | -help: try using a slice pattern here +help: replace the binding and indexed access with a slice pattern | -LL | if let (SomeEnum::Three(a), Some([_, b_1, ..])) = (a_wrapped, b_wrapped) { - | ~~~~~~~~~~~~ -help: and replace the index expressions here +LL ~ if let (SomeEnum::Three(a), Some([_, b_1, ..])) = (a_wrapped, b_wrapped) { +LL | +LL | +LL ~ println!("{} -> {}", a[2], b_1); | -LL | println!("{} -> {}", a[2], b_1); - | ~~~ error: this binding can be a slice pattern to avoid indexing - --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:55:21 + --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:53:21 | LL | if let Some(ref slice) = slice { | ^^^^^ | -help: try using a slice pattern here +help: replace the binding and indexed access with a slice pattern | -LL | if let Some([_, ref slice_1, ..]) = slice { - | ~~~~~~~~~~~~~~~~~~~~ -help: and replace the index expressions here +LL ~ if let Some([_, ref slice_1, ..]) = slice { +LL | +LL ~ println!("{:?}", slice_1); | -LL | println!("{:?}", slice_1); - | ~~~~~~~ error: this binding can be a slice pattern to avoid indexing - --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:64:17 + --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:62:17 | LL | if let Some(slice) = &slice { | ^^^^^ | -help: try using a slice pattern here +help: replace the binding and indexed access with a slice pattern | -LL | if let Some([slice_0, ..]) = &slice { - | ~~~~~~~~~~~~~ -help: and replace the index expressions here +LL ~ if let Some([slice_0, ..]) = &slice { +LL | +LL ~ println!("{:?}", slice_0); | -LL | println!("{:?}", slice_0); - | ~~~~~~~ error: this binding can be a slice pattern to avoid indexing - --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:134:17 + --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:132:17 | LL | if let Some(slice) = wrap.inner { | ^^^^^ | -help: try using a slice pattern here +help: replace the binding and indexed access with a slice pattern | -LL | if let Some([slice_0, ..]) = wrap.inner { - | ~~~~~~~~~~~~~ -help: and replace the index expressions here +LL ~ if let Some([slice_0, ..]) = wrap.inner { +LL | +LL | if wrap.is_awesome { +LL ~ println!("This is awesome! {}", slice_0); | -LL | println!("This is awesome! {}", slice_0); - | ~~~~~~~ error: this binding can be a slice pattern to avoid indexing - --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:142:17 + --> tests/ui/index_refutable_slice/if_let_slice_binding.rs:140:17 | LL | if let Some(slice) = wrap.inner { | ^^^^^ | -help: try using a slice pattern here +help: replace the binding and indexed access with a slice pattern | -LL | if let Some([slice_0, ..]) = wrap.inner { - | ~~~~~~~~~~~~~ -help: and replace the index expressions here +LL ~ if let Some([slice_0, ..]) = wrap.inner { +LL | +LL | if wrap.is_super_awesome() { +LL ~ println!("This is super awesome! {}", slice_0); | -LL | println!("This is super awesome! {}", slice_0); - | ~~~~~~~ error: aborting due to 10 previous errors diff --git a/tests/ui/index_refutable_slice/slice_indexing_in_macro.fixed b/tests/ui/index_refutable_slice/slice_indexing_in_macro.fixed new file mode 100644 index 00000000000..72edc539f04 --- /dev/null +++ b/tests/ui/index_refutable_slice/slice_indexing_in_macro.fixed @@ -0,0 +1,29 @@ +#![deny(clippy::index_refutable_slice)] + +extern crate if_chain; +use if_chain::if_chain; + +macro_rules! if_let_slice_macro { + () => { + // This would normally be linted + let slice: Option<&[u32]> = Some(&[1, 2, 3]); + if let Some(slice) = slice { + println!("{}", slice[0]); + } + }; +} + +fn main() { + // Don't lint this + if_let_slice_macro!(); + + // Do lint this + if_chain! { + let slice: Option<&[u32]> = Some(&[1, 2, 3]); + if let Some([slice_0, ..]) = slice; + //~^ ERROR: this binding can be a slice pattern to avoid indexing + then { + println!("{}", slice_0); + } + } +} diff --git a/tests/ui/index_refutable_slice/slice_indexing_in_macro.rs b/tests/ui/index_refutable_slice/slice_indexing_in_macro.rs index 5d9fad48889..7b474ba423b 100644 --- a/tests/ui/index_refutable_slice/slice_indexing_in_macro.rs +++ b/tests/ui/index_refutable_slice/slice_indexing_in_macro.rs @@ -1,7 +1,5 @@ #![deny(clippy::index_refutable_slice)] -//@no-rustfix: need to change the suggestion to a multipart suggestion - extern crate if_chain; use if_chain::if_chain; diff --git a/tests/ui/index_refutable_slice/slice_indexing_in_macro.stderr b/tests/ui/index_refutable_slice/slice_indexing_in_macro.stderr index 69f0aaa9777..64741abb911 100644 --- a/tests/ui/index_refutable_slice/slice_indexing_in_macro.stderr +++ b/tests/ui/index_refutable_slice/slice_indexing_in_macro.stderr @@ -1,5 +1,5 @@ error: this binding can be a slice pattern to avoid indexing - --> tests/ui/index_refutable_slice/slice_indexing_in_macro.rs:25:21 + --> tests/ui/index_refutable_slice/slice_indexing_in_macro.rs:23:21 | LL | if let Some(slice) = slice; | ^^^^^ @@ -9,14 +9,13 @@ note: the lint level is defined here | LL | #![deny(clippy::index_refutable_slice)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -help: try using a slice pattern here +help: replace the binding and indexed access with a slice pattern | -LL | if let Some([slice_0, ..]) = slice; - | ~~~~~~~~~~~~~ -help: and replace the index expressions here +LL ~ if let Some([slice_0, ..]) = slice; +LL | +LL | then { +LL ~ println!("{}", slice_0); | -LL | println!("{}", slice_0); - | ~~~~~~~ error: aborting due to 1 previous error -- cgit 1.4.1-3-g733a5 From c8b10ac6712364c9b2ab9360ef739339d6477224 Mon Sep 17 00:00:00 2001 From: cyrgani Date: Thu, 5 Dec 2024 09:46:57 +0100 Subject: fix the order of emitting `ref_as_ptr` and `borrow_as_ptr` --- clippy_lints/src/casts/borrow_as_ptr.rs | 9 ++++++--- clippy_lints/src/casts/mod.rs | 9 ++++++--- tests/ui/borrow_and_ref_as_ptr.fixed | 11 +++++++++++ tests/ui/borrow_and_ref_as_ptr.rs | 11 +++++++++++ tests/ui/borrow_and_ref_as_ptr.stderr | 17 +++++++++++++++++ 5 files changed, 51 insertions(+), 6 deletions(-) create mode 100644 tests/ui/borrow_and_ref_as_ptr.fixed create mode 100644 tests/ui/borrow_and_ref_as_ptr.rs create mode 100644 tests/ui/borrow_and_ref_as_ptr.stderr diff --git a/clippy_lints/src/casts/borrow_as_ptr.rs b/clippy_lints/src/casts/borrow_as_ptr.rs index 4dd51dcbc9a..deecbce2c40 100644 --- a/clippy_lints/src/casts/borrow_as_ptr.rs +++ b/clippy_lints/src/casts/borrow_as_ptr.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_context; -use clippy_utils::std_or_core; +use clippy_utils::{is_lint_allowed, std_or_core}; use rustc_errors::Applicability; use rustc_hir::{BorrowKind, Expr, ExprKind, Mutability, Ty, TyKind}; use rustc_lint::LateContext; @@ -13,10 +13,11 @@ pub(super) fn check<'tcx>( expr: &'tcx Expr<'_>, cast_expr: &'tcx Expr<'_>, cast_to: &'tcx Ty<'_>, -) { +) -> bool { if matches!(cast_to.kind, TyKind::Ptr(_)) && let ExprKind::AddrOf(BorrowKind::Ref, mutability, e) = cast_expr.kind && let Some(std_or_core) = std_or_core(cx) + && !is_lint_allowed(cx, BORROW_AS_PTR, expr.hir_id) { let macro_name = match mutability { Mutability::Not => "addr_of", @@ -31,7 +32,7 @@ pub(super) fn check<'tcx>( .get(base.hir_id) .is_some_and(|x| x.iter().any(|adj| matches!(adj.kind, Adjust::Deref(_)))) }) { - return; + return false; } span_lint_and_sugg( @@ -43,5 +44,7 @@ pub(super) fn check<'tcx>( format!("{std_or_core}::ptr::{macro_name}!({snip})"), Applicability::MachineApplicable, ); + return true; } + false } diff --git a/clippy_lints/src/casts/mod.rs b/clippy_lints/src/casts/mod.rs index 8b884399f92..6f98b335fe2 100644 --- a/clippy_lints/src/casts/mod.rs +++ b/clippy_lints/src/casts/mod.rs @@ -806,10 +806,13 @@ impl<'tcx> LateLintPass<'tcx> for Casts { as_underscore::check(cx, expr, cast_to_hir); - if self.msrv.meets(msrvs::PTR_FROM_REF) { + let was_borrow_as_ptr_emitted = if self.msrv.meets(msrvs::BORROW_AS_PTR) { + borrow_as_ptr::check(cx, expr, cast_from_expr, cast_to_hir) + } else { + false + }; + if self.msrv.meets(msrvs::PTR_FROM_REF) && !was_borrow_as_ptr_emitted { ref_as_ptr::check(cx, expr, cast_from_expr, cast_to_hir); - } else if self.msrv.meets(msrvs::BORROW_AS_PTR) { - borrow_as_ptr::check(cx, expr, cast_from_expr, cast_to_hir); } } diff --git a/tests/ui/borrow_and_ref_as_ptr.fixed b/tests/ui/borrow_and_ref_as_ptr.fixed new file mode 100644 index 00000000000..2950b158deb --- /dev/null +++ b/tests/ui/borrow_and_ref_as_ptr.fixed @@ -0,0 +1,11 @@ +// Make sure that `ref_as_ptr` is not emitted when `borrow_as_ptr` is. + +#![warn(clippy::ref_as_ptr, clippy::borrow_as_ptr)] + +fn f(_: T) {} + +fn main() { + let mut val = 0; + f(&raw const val); + f(&raw mut val); +} diff --git a/tests/ui/borrow_and_ref_as_ptr.rs b/tests/ui/borrow_and_ref_as_ptr.rs new file mode 100644 index 00000000000..19eb8f29233 --- /dev/null +++ b/tests/ui/borrow_and_ref_as_ptr.rs @@ -0,0 +1,11 @@ +// Make sure that `ref_as_ptr` is not emitted when `borrow_as_ptr` is. + +#![warn(clippy::ref_as_ptr, clippy::borrow_as_ptr)] + +fn f(_: T) {} + +fn main() { + let mut val = 0; + f(&val as *const _); + f(&mut val as *mut i32); +} diff --git a/tests/ui/borrow_and_ref_as_ptr.stderr b/tests/ui/borrow_and_ref_as_ptr.stderr new file mode 100644 index 00000000000..82a27af303c --- /dev/null +++ b/tests/ui/borrow_and_ref_as_ptr.stderr @@ -0,0 +1,17 @@ +error: borrow as raw pointer + --> tests/ui/borrow_and_ref_as_ptr.rs:9:7 + | +LL | f(&val as *const _); + | ^^^^^^^^^^^^^^^^ help: try: `&raw const val` + | + = note: `-D clippy::borrow-as-ptr` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::borrow_as_ptr)]` + +error: borrow as raw pointer + --> tests/ui/borrow_and_ref_as_ptr.rs:10:7 + | +LL | f(&mut val as *mut i32); + | ^^^^^^^^^^^^^^^^^^^^ help: try: `&raw mut val` + +error: aborting due to 2 previous errors + -- cgit 1.4.1-3-g733a5 From 9925f999f6a3570a251aed2039bdb6d90de5b576 Mon Sep 17 00:00:00 2001 From: cyrgani Date: Thu, 5 Dec 2024 09:48:55 +0100 Subject: update `borrow_as_ptr` to suggest `&raw` when the MSRV allows it --- clippy_lints/src/casts/borrow_as_ptr.rs | 28 +++++++++++++++++++++------- clippy_lints/src/casts/mod.rs | 12 ++++++------ clippy_utils/src/msrvs.rs | 4 ++-- tests/ui/borrow_as_ptr_raw_ref.fixed | 19 +++++++++++++++++++ tests/ui/borrow_as_ptr_raw_ref.rs | 19 +++++++++++++++++++ tests/ui/borrow_as_ptr_raw_ref.stderr | 17 +++++++++++++++++ 6 files changed, 84 insertions(+), 15 deletions(-) create mode 100644 tests/ui/borrow_as_ptr_raw_ref.fixed create mode 100644 tests/ui/borrow_as_ptr_raw_ref.rs create mode 100644 tests/ui/borrow_as_ptr_raw_ref.stderr diff --git a/clippy_lints/src/casts/borrow_as_ptr.rs b/clippy_lints/src/casts/borrow_as_ptr.rs index deecbce2c40..67aa33ca06c 100644 --- a/clippy_lints/src/casts/borrow_as_ptr.rs +++ b/clippy_lints/src/casts/borrow_as_ptr.rs @@ -1,6 +1,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::msrvs::Msrv; use clippy_utils::source::snippet_with_context; -use clippy_utils::{is_lint_allowed, std_or_core}; +use clippy_utils::{is_lint_allowed, msrvs, std_or_core}; use rustc_errors::Applicability; use rustc_hir::{BorrowKind, Expr, ExprKind, Mutability, Ty, TyKind}; use rustc_lint::LateContext; @@ -13,16 +14,12 @@ pub(super) fn check<'tcx>( expr: &'tcx Expr<'_>, cast_expr: &'tcx Expr<'_>, cast_to: &'tcx Ty<'_>, + msrv: &Msrv, ) -> bool { if matches!(cast_to.kind, TyKind::Ptr(_)) && let ExprKind::AddrOf(BorrowKind::Ref, mutability, e) = cast_expr.kind - && let Some(std_or_core) = std_or_core(cx) && !is_lint_allowed(cx, BORROW_AS_PTR, expr.hir_id) { - let macro_name = match mutability { - Mutability::Not => "addr_of", - Mutability::Mut => "addr_of_mut", - }; let mut app = Applicability::MachineApplicable; let snip = snippet_with_context(cx, e.span, cast_expr.span.ctxt(), "..", &mut app).0; // Fix #9884 @@ -35,13 +32,30 @@ pub(super) fn check<'tcx>( return false; } + let suggestion = if msrv.meets(msrvs::RAW_REF_OP) { + let operator_kind = match mutability { + Mutability::Not => "const", + Mutability::Mut => "mut", + }; + format!("&raw {operator_kind} {snip}") + } else { + let Some(std_or_core) = std_or_core(cx) else { + return false; + }; + let macro_name = match mutability { + Mutability::Not => "addr_of", + Mutability::Mut => "addr_of_mut", + }; + format!("{std_or_core}::ptr::{macro_name}!({snip})") + }; + span_lint_and_sugg( cx, BORROW_AS_PTR, expr.span, "borrow as raw pointer", "try", - format!("{std_or_core}::ptr::{macro_name}!({snip})"), + suggestion, Applicability::MachineApplicable, ); return true; diff --git a/clippy_lints/src/casts/mod.rs b/clippy_lints/src/casts/mod.rs index 6f98b335fe2..84fab9cb75f 100644 --- a/clippy_lints/src/casts/mod.rs +++ b/clippy_lints/src/casts/mod.rs @@ -574,13 +574,13 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does /// Checks for the usage of `&expr as *const T` or - /// `&mut expr as *mut T`, and suggest using `ptr::addr_of` or - /// `ptr::addr_of_mut` instead. + /// `&mut expr as *mut T`, and suggest using `&raw const` or + /// `&raw mut` instead. /// /// ### Why is this bad? /// This would improve readability and avoid creating a reference /// that points to an uninitialized value or unaligned place. - /// Read the `ptr::addr_of` docs for more information. + /// Read the `&raw` explanation in the Reference for more information. /// /// ### Example /// ```no_run @@ -593,10 +593,10 @@ declare_clippy_lint! { /// Use instead: /// ```no_run /// let val = 1; - /// let p = std::ptr::addr_of!(val); + /// let p = &raw const val; /// /// let mut val_mut = 1; - /// let p_mut = std::ptr::addr_of_mut!(val_mut); + /// let p_mut = &raw mut val_mut; /// ``` #[clippy::version = "1.60.0"] pub BORROW_AS_PTR, @@ -807,7 +807,7 @@ impl<'tcx> LateLintPass<'tcx> for Casts { as_underscore::check(cx, expr, cast_to_hir); let was_borrow_as_ptr_emitted = if self.msrv.meets(msrvs::BORROW_AS_PTR) { - borrow_as_ptr::check(cx, expr, cast_from_expr, cast_to_hir) + borrow_as_ptr::check(cx, expr, cast_from_expr, cast_to_hir, &self.msrv) } else { false }; diff --git a/clippy_utils/src/msrvs.rs b/clippy_utils/src/msrvs.rs index 1eb7d54e133..f0381760709 100644 --- a/clippy_utils/src/msrvs.rs +++ b/clippy_utils/src/msrvs.rs @@ -19,9 +19,9 @@ macro_rules! msrv_aliases { // names may refer to stabilized feature flags or library items msrv_aliases! { 1,83,0 { CONST_EXTERN_FN, CONST_FLOAT_BITS_CONV, CONST_FLOAT_CLASSIFY } - 1,82,0 { IS_NONE_OR, REPEAT_N } + 1,82,0 { IS_NONE_OR, REPEAT_N, RAW_REF_OP } 1,81,0 { LINT_REASONS_STABILIZATION } - 1,80,0 { BOX_INTO_ITER} + 1,80,0 { BOX_INTO_ITER } 1,77,0 { C_STR_LITERALS } 1,76,0 { PTR_FROM_REF, OPTION_RESULT_INSPECT } 1,73,0 { MANUAL_DIV_CEIL } diff --git a/tests/ui/borrow_as_ptr_raw_ref.fixed b/tests/ui/borrow_as_ptr_raw_ref.fixed new file mode 100644 index 00000000000..d6842e60a3e --- /dev/null +++ b/tests/ui/borrow_as_ptr_raw_ref.fixed @@ -0,0 +1,19 @@ +#![warn(clippy::borrow_as_ptr)] +#![allow(clippy::useless_vec)] + +fn a() -> i32 { + 0 +} + +#[clippy::msrv = "1.82"] +fn main() { + let val = 1; + let _p = &raw const val; + let _p = &0 as *const i32; + let _p = &a() as *const i32; + let vec = vec![1]; + let _p = &vec.len() as *const usize; + + let mut val_mut = 1; + let _p_mut = &raw mut val_mut; +} diff --git a/tests/ui/borrow_as_ptr_raw_ref.rs b/tests/ui/borrow_as_ptr_raw_ref.rs new file mode 100644 index 00000000000..3c9daed18f1 --- /dev/null +++ b/tests/ui/borrow_as_ptr_raw_ref.rs @@ -0,0 +1,19 @@ +#![warn(clippy::borrow_as_ptr)] +#![allow(clippy::useless_vec)] + +fn a() -> i32 { + 0 +} + +#[clippy::msrv = "1.82"] +fn main() { + let val = 1; + let _p = &val as *const i32; + let _p = &0 as *const i32; + let _p = &a() as *const i32; + let vec = vec![1]; + let _p = &vec.len() as *const usize; + + let mut val_mut = 1; + let _p_mut = &mut val_mut as *mut i32; +} diff --git a/tests/ui/borrow_as_ptr_raw_ref.stderr b/tests/ui/borrow_as_ptr_raw_ref.stderr new file mode 100644 index 00000000000..5611fcae8d4 --- /dev/null +++ b/tests/ui/borrow_as_ptr_raw_ref.stderr @@ -0,0 +1,17 @@ +error: borrow as raw pointer + --> tests/ui/borrow_as_ptr_raw_ref.rs:11:14 + | +LL | let _p = &val as *const i32; + | ^^^^^^^^^^^^^^^^^^ help: try: `&raw const val` + | + = note: `-D clippy::borrow-as-ptr` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::borrow_as_ptr)]` + +error: borrow as raw pointer + --> tests/ui/borrow_as_ptr_raw_ref.rs:18:18 + | +LL | let _p_mut = &mut val_mut as *mut i32; + | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&raw mut val_mut` + +error: aborting due to 2 previous errors + -- cgit 1.4.1-3-g733a5 From 4907940a55103046e3cbf0bcd6ece9cb5a294e68 Mon Sep 17 00:00:00 2001 From: BD103 <59022059+BD103@users.noreply.github.com> Date: Wed, 4 Dec 2024 11:27:24 -0500 Subject: fix: various typos --- clippy_lints/src/manual_is_power_of_two.rs | 16 ++++++++-------- .../src/methods/map_with_unused_argument_over_ranges.rs | 2 +- clippy_lints/src/methods/mod.rs | 2 +- clippy_lints/src/question_mark.rs | 2 +- clippy_lints/src/unit_types/unit_arg.rs | 4 ++-- clippy_lints/src/unnecessary_literal_bound.rs | 2 +- .../src/utils/internal_lints/slow_symbol_comparisons.rs | 6 +++--- src/driver.rs | 2 +- util/gh-pages/script.js | 14 +++++++------- 9 files changed, 25 insertions(+), 25 deletions(-) diff --git a/clippy_lints/src/manual_is_power_of_two.rs b/clippy_lints/src/manual_is_power_of_two.rs index 4fee3bf7aa9..841adfec462 100644 --- a/clippy_lints/src/manual_is_power_of_two.rs +++ b/clippy_lints/src/manual_is_power_of_two.rs @@ -43,21 +43,21 @@ impl LateLintPass<'_> for ManualIsPowerOfTwo { && bin_op.node == BinOpKind::Eq { // a.count_ones() == 1 - if let ExprKind::MethodCall(method_name, reciever, [], _) = left.kind + if let ExprKind::MethodCall(method_name, receiver, [], _) = left.kind && method_name.ident.as_str() == "count_ones" - && let &Uint(_) = cx.typeck_results().expr_ty(reciever).kind() + && let &Uint(_) = cx.typeck_results().expr_ty(receiver).kind() && check_lit(right, 1) { - build_sugg(cx, expr, reciever, &mut applicability); + build_sugg(cx, expr, receiver, &mut applicability); } // 1 == a.count_ones() - if let ExprKind::MethodCall(method_name, reciever, [], _) = right.kind + if let ExprKind::MethodCall(method_name, receiver, [], _) = right.kind && method_name.ident.as_str() == "count_ones" - && let &Uint(_) = cx.typeck_results().expr_ty(reciever).kind() + && let &Uint(_) = cx.typeck_results().expr_ty(receiver).kind() && check_lit(left, 1) { - build_sugg(cx, expr, reciever, &mut applicability); + build_sugg(cx, expr, receiver, &mut applicability); } // a & (a - 1) == 0 @@ -115,8 +115,8 @@ impl LateLintPass<'_> for ManualIsPowerOfTwo { } } -fn build_sugg(cx: &LateContext<'_>, expr: &Expr<'_>, reciever: &Expr<'_>, applicability: &mut Applicability) { - let snippet = snippet_with_applicability(cx, reciever.span, "..", applicability); +fn build_sugg(cx: &LateContext<'_>, expr: &Expr<'_>, receiver: &Expr<'_>, applicability: &mut Applicability) { + let snippet = snippet_with_applicability(cx, receiver.span, "..", applicability); span_lint_and_sugg( cx, diff --git a/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs b/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs index 80703618a11..1ebb71e251a 100644 --- a/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs +++ b/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs @@ -19,7 +19,7 @@ fn extract_count_with_applicability( ) -> Option { let start = range.start?; let end = range.end?; - // TODO: This doens't handle if either the start or end are negative literals, or if the start is + // TODO: This doesn't handle if either the start or end are negative literals, or if the start is // not a literal. In the first case, we need to be careful about how we handle computing the // count to avoid overflows. In the second, we may need to add parenthesis to make the // suggestion correct. diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs index 941b086ab2e..5c6d59d2542 100644 --- a/clippy_lints/src/methods/mod.rs +++ b/clippy_lints/src/methods/mod.rs @@ -3969,7 +3969,7 @@ declare_clippy_lint! { /// /// ### Why is this bad? /// - /// In the aformentioned cases it is not necessary to call `min()` or `max()` + /// In the aforementioned cases it is not necessary to call `min()` or `max()` /// to compare values, it may even cause confusion. /// /// ### Example diff --git a/clippy_lints/src/question_mark.rs b/clippy_lints/src/question_mark.rs index 4b96858d8f6..d8bff0c6271 100644 --- a/clippy_lints/src/question_mark.rs +++ b/clippy_lints/src/question_mark.rs @@ -59,7 +59,7 @@ pub struct QuestionMark { /// As for why we need this in the first place: try_block_depth_stack: Vec, /// Keeps track of the number of inferred return type closures we are inside, to avoid problems - /// with the `Err(x.into())` expansion being ambiguious. + /// with the `Err(x.into())` expansion being ambiguous. inferred_ret_closure_stack: u16, } diff --git a/clippy_lints/src/unit_types/unit_arg.rs b/clippy_lints/src/unit_types/unit_arg.rs index 0f4bd286145..47d6fe7db76 100644 --- a/clippy_lints/src/unit_types/unit_arg.rs +++ b/clippy_lints/src/unit_types/unit_arg.rs @@ -25,13 +25,13 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { return; } - let (reciever, args) = match expr.kind { + let (receiver, args) = match expr.kind { ExprKind::Call(_, args) => (None, args), ExprKind::MethodCall(_, receiver, args, _) => (Some(receiver), args), _ => return, }; - let args_to_recover = reciever + let args_to_recover = receiver .into_iter() .chain(args) .filter(|arg| { diff --git a/clippy_lints/src/unnecessary_literal_bound.rs b/clippy_lints/src/unnecessary_literal_bound.rs index 80ce6711126..8165a45bc5b 100644 --- a/clippy_lints/src/unnecessary_literal_bound.rs +++ b/clippy_lints/src/unnecessary_literal_bound.rs @@ -17,7 +17,7 @@ declare_clippy_lint! { /// /// ### Why is this bad? /// - /// This leaves the caller unable to use the `&str` as `&'static str`, causing unneccessary allocations or confusion. + /// This leaves the caller unable to use the `&str` as `&'static str`, causing unnecessary allocations or confusion. /// This is also most likely what you meant to write. /// /// ### Example diff --git a/clippy_lints/src/utils/internal_lints/slow_symbol_comparisons.rs b/clippy_lints/src/utils/internal_lints/slow_symbol_comparisons.rs index 3742be0e103..631d9cc3f41 100644 --- a/clippy_lints/src/utils/internal_lints/slow_symbol_comparisons.rs +++ b/clippy_lints/src/utils/internal_lints/slow_symbol_comparisons.rs @@ -12,18 +12,18 @@ use rustc_span::Span; declare_clippy_lint! { /// ### What it does /// - /// Detects symbol comparision using `Symbol::intern`. + /// Detects symbol comparison using `Symbol::intern`. /// /// ### Why is this bad? /// - /// Comparision via `Symbol::as_str()` is faster if the interned symbols are not reused. + /// Comparison via `Symbol::as_str()` is faster if the interned symbols are not reused. /// /// ### Example /// /// None, see suggestion. pub SLOW_SYMBOL_COMPARISONS, internal, - "detects slow comparisions of symbol" + "detects slow comparisons of symbol" } declare_lint_pass!(SlowSymbolComparisons => [SLOW_SYMBOL_COMPARISONS]); diff --git a/src/driver.rs b/src/driver.rs index c66837dc998..5ba392c4b91 100644 --- a/src/driver.rs +++ b/src/driver.rs @@ -284,7 +284,7 @@ pub fn main() { let cap_lints_allow = arg_value(&orig_args, "--cap-lints", |val| val == "allow").is_some() && arg_value(&orig_args, "--force-warn", |val| val.contains("clippy::")).is_none(); - // If `--no-deps` is enabled only lint the primary pacakge + // If `--no-deps` is enabled only lint the primary package let relevant_package = !no_deps || env::var("CARGO_PRIMARY_PACKAGE").is_ok(); // Do not run Clippy for Cargo's info queries so that invalid CLIPPY_ARGS are not cached diff --git a/util/gh-pages/script.js b/util/gh-pages/script.js index 9a5365b2158..c2197b89c56 100644 --- a/util/gh-pages/script.js +++ b/util/gh-pages/script.js @@ -232,13 +232,13 @@ const APPLICABILITIES_FILTER_DEFAULT = { MaybeIncorrect: true, HasPlaceholders: true, }; -const URL_PARAMS_CORRESPONDANCE = { +const URL_PARAMS_CORRESPONDENCE = { "groups_filter": "groups", "levels_filter": "levels", "applicabilities_filter": "applicabilities", "version_filter": "versions", }; -const VERSIONS_CORRESPONDANCE = { +const VERSIONS_CORRESPONDENCE = { "lte": "≤", "gte": "≥", "eq": "=", @@ -285,7 +285,7 @@ window.filters = { } function updateIfNeeded(filterName, obj2) { const obj1 = filters[filterName]; - const name = URL_PARAMS_CORRESPONDANCE[filterName]; + const name = URL_PARAMS_CORRESPONDENCE[filterName]; if (!compareObjects(obj1, obj2)) { urlParams.set( name, @@ -316,9 +316,9 @@ window.filters = { versions.push(`lte:${filters.version_filter["≤"]}`); } if (versions.length !== 0) { - urlParams.set(URL_PARAMS_CORRESPONDANCE["version_filter"], versions.join(",")); + urlParams.set(URL_PARAMS_CORRESPONDENCE["version_filter"], versions.join(",")); } else { - urlParams.delete(URL_PARAMS_CORRESPONDANCE["version_filter"]); + urlParams.delete(URL_PARAMS_CORRESPONDENCE["version_filter"]); } let params = urlParams.toString(); @@ -532,7 +532,7 @@ function parseURLFilters() { const urlParams = new URLSearchParams(window.location.search); for (const [key, value] of urlParams.entries()) { - for (const [corres_key, corres_value] of Object.entries(URL_PARAMS_CORRESPONDANCE)) { + for (const [corres_key, corres_value] of Object.entries(URL_PARAMS_CORRESPONDENCE)) { if (corres_value === key) { if (key !== "versions") { const settings = new Set(value.split(",")); @@ -545,7 +545,7 @@ function parseURLFilters() { for (const [kind, value] of settings) { const elem = document.querySelector( - `#version-filter input[data-value="${VERSIONS_CORRESPONDANCE[kind]}"]`); + `#version-filter input[data-value="${VERSIONS_CORRESPONDENCE[kind]}"]`); elem.value = value; updateVersionFilters(elem, true); } -- cgit 1.4.1-3-g733a5 From c963e22f05a77c0b7a959f987c048fbbb8865583 Mon Sep 17 00:00:00 2001 From: Scott Gerring Date: Fri, 6 Dec 2024 15:40:50 +0100 Subject: chore: use multipart_suggestions for manual_async_fn --- clippy_lints/src/manual_async_fn.rs | 21 +++--- tests/ui/manual_async_fn.fixed | 116 +++++++++++++++++++++++++++++++ tests/ui/manual_async_fn.rs | 3 +- tests/ui/manual_async_fn.stderr | 134 +++++++++++------------------------- 4 files changed, 166 insertions(+), 108 deletions(-) create mode 100644 tests/ui/manual_async_fn.fixed diff --git a/clippy_lints/src/manual_async_fn.rs b/clippy_lints/src/manual_async_fn.rs index 3c77db84a40..9f3b0957eab 100644 --- a/clippy_lints/src/manual_async_fn.rs +++ b/clippy_lints/src/manual_async_fn.rs @@ -74,7 +74,7 @@ impl<'tcx> LateLintPass<'tcx> for ManualAsyncFn { if let Some(vis_snip) = vis_span.get_source_text(cx) && let Some(header_snip) = header_span.get_source_text(cx) && let Some(ret_pos) = position_before_rarrow(&header_snip) - && let Some((ret_sugg, ret_snip)) = suggested_ret(cx, output) + && let Some((_, ret_snip)) = suggested_ret(cx, output) { let header_snip = if vis_snip.is_empty() { format!("async {}", &header_snip[..ret_pos]) @@ -82,19 +82,14 @@ impl<'tcx> LateLintPass<'tcx> for ManualAsyncFn { format!("{} async {}", vis_snip, &header_snip[vis_snip.len() + 1..ret_pos]) }; - let help = format!("make the function `async` and {ret_sugg}"); - diag.span_suggestion( - header_span, - help, - format!("{header_snip}{ret_snip}"), - Applicability::MachineApplicable, - ); + let body_snip = snippet_block(cx, closure_body.value.span, "..", Some(block.span)).to_string(); - let body_snip = snippet_block(cx, closure_body.value.span, "..", Some(block.span)); - diag.span_suggestion( - block.span, - "move the body of the async block to the enclosing function", - body_snip, + diag.multipart_suggestion( + "make the function `async` and return the output of the future directly", + vec![ + (header_span, format!("{header_snip}{ret_snip}")), + (block.span, body_snip), + ], Applicability::MachineApplicable, ); } diff --git a/tests/ui/manual_async_fn.fixed b/tests/ui/manual_async_fn.fixed new file mode 100644 index 00000000000..dc1cb8e11fc --- /dev/null +++ b/tests/ui/manual_async_fn.fixed @@ -0,0 +1,116 @@ +#![warn(clippy::manual_async_fn)] +#![allow(clippy::needless_pub_self, unused)] + +use std::future::Future; + +async fn fut() -> i32 { 42 } + +#[rustfmt::skip] +async fn fut2() -> i32 { 42 } + +#[rustfmt::skip] +async fn fut3() -> i32 { 42 } + +async fn empty_fut() {} + +#[rustfmt::skip] +async fn empty_fut2() {} + +#[rustfmt::skip] +async fn empty_fut3() {} + +async fn core_fut() -> i32 { 42 } + +// should be ignored +fn has_other_stmts() -> impl core::future::Future { + let _ = 42; + async move { 42 } +} + +// should be ignored +fn not_fut() -> i32 { + 42 +} + +// should be ignored +async fn already_async() -> impl Future { + async { 42 } +} + +struct S; +impl S { + async fn inh_fut() -> i32 { + // NOTE: this code is here just to check that the indentation is correct in the suggested fix + let a = 42; + let b = 21; + if a < b { + let c = 21; + let d = 42; + if c < d { + let _ = 42; + } + } + 42 + } + + // should be ignored + fn not_fut(&self) -> i32 { + 42 + } + + // should be ignored + fn has_other_stmts() -> impl core::future::Future { + let _ = 42; + async move { 42 } + } + + // should be ignored + async fn already_async(&self) -> impl Future { + async { 42 } + } +} + +// Tests related to lifetime capture + +async fn elided(_: &i32) -> i32 { 42 } + +// should be ignored +fn elided_not_bound(_: &i32) -> impl Future { + async { 42 } +} + +#[allow(clippy::needless_lifetimes)] +async fn explicit<'a, 'b>(_: &'a i32, _: &'b i32) -> i32 { 42 } + +// should be ignored +#[allow(clippy::needless_lifetimes)] +fn explicit_not_bound<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future { + async { 42 } +} + +// should be ignored +mod issue_5765 { + use std::future::Future; + + struct A; + impl A { + fn f(&self) -> impl Future { + async {} + } + } + + fn test() { + let _future = { + let a = A; + a.f() + }; + } +} + +pub async fn issue_10450() -> i32 { 42 } + +pub(crate) async fn issue_10450_2() -> i32 { 42 } + +pub(self) async fn issue_10450_3() -> i32 { 42 } + +fn main() {} diff --git a/tests/ui/manual_async_fn.rs b/tests/ui/manual_async_fn.rs index 6b8ac5033a9..9ca7654a368 100644 --- a/tests/ui/manual_async_fn.rs +++ b/tests/ui/manual_async_fn.rs @@ -1,8 +1,6 @@ #![warn(clippy::manual_async_fn)] #![allow(clippy::needless_pub_self, unused)] -//@no-rustfix: need to change the suggestion to a multipart suggestion - use std::future::Future; fn fut() -> impl Future { @@ -99,6 +97,7 @@ fn elided_not_bound(_: &i32) -> impl Future { async { 42 } } +#[allow(clippy::needless_lifetimes)] fn explicit<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future + 'a + 'b { async { 42 } } diff --git a/tests/ui/manual_async_fn.stderr b/tests/ui/manual_async_fn.stderr index f88fc30b3b5..68a97243436 100644 --- a/tests/ui/manual_async_fn.stderr +++ b/tests/ui/manual_async_fn.stderr @@ -1,5 +1,5 @@ error: this function can be simplified using the `async fn` syntax - --> tests/ui/manual_async_fn.rs:8:1 + --> tests/ui/manual_async_fn.rs:6:1 | LL | fn fut() -> impl Future { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -8,116 +8,84 @@ LL | fn fut() -> impl Future { = help: to override `-D warnings` add `#[allow(clippy::manual_async_fn)]` help: make the function `async` and return the output of the future directly | -LL | async fn fut() -> i32 { - | ~~~~~~~~~~~~~~~~~~~~~ -help: move the body of the async block to the enclosing function - | -LL | fn fut() -> impl Future { 42 } - | ~~~~~~ +LL | async fn fut() -> i32 { 42 } + | ~~~~~~~~~~~~~~~~~~~~~ ~~~~~~ error: this function can be simplified using the `async fn` syntax - --> tests/ui/manual_async_fn.rs:13:1 + --> tests/ui/manual_async_fn.rs:11:1 | LL | fn fut2() ->impl Future { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: make the function `async` and return the output of the future directly | -LL | async fn fut2() -> i32 { - | ~~~~~~~~~~~~~~~~~~~~~~ -help: move the body of the async block to the enclosing function - | -LL | fn fut2() ->impl Future { 42 } - | ~~~~~~ +LL | async fn fut2() -> i32 { 42 } + | ~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~ error: this function can be simplified using the `async fn` syntax - --> tests/ui/manual_async_fn.rs:18:1 + --> tests/ui/manual_async_fn.rs:16:1 | LL | fn fut3()-> impl Future { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: make the function `async` and return the output of the future directly | -LL | async fn fut3() -> i32 { - | ~~~~~~~~~~~~~~~~~~~~~~ -help: move the body of the async block to the enclosing function - | -LL | fn fut3()-> impl Future { 42 } - | ~~~~~~ +LL | async fn fut3() -> i32 { 42 } + | ~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~ error: this function can be simplified using the `async fn` syntax - --> tests/ui/manual_async_fn.rs:22:1 + --> tests/ui/manual_async_fn.rs:20:1 | LL | fn empty_fut() -> impl Future { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | -help: make the function `async` and remove the return type - | -LL | async fn empty_fut() { - | ~~~~~~~~~~~~~~~~~~~~ -help: move the body of the async block to the enclosing function +help: make the function `async` and return the output of the future directly | -LL | fn empty_fut() -> impl Future {} - | ~~ +LL | async fn empty_fut() {} + | ~~~~~~~~~~~~~~~~~~~~ ~~ error: this function can be simplified using the `async fn` syntax - --> tests/ui/manual_async_fn.rs:27:1 + --> tests/ui/manual_async_fn.rs:25:1 | LL | fn empty_fut2() ->impl Future { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | -help: make the function `async` and remove the return type - | -LL | async fn empty_fut2() { - | ~~~~~~~~~~~~~~~~~~~~~ -help: move the body of the async block to the enclosing function +help: make the function `async` and return the output of the future directly | -LL | fn empty_fut2() ->impl Future {} - | ~~ +LL | async fn empty_fut2() {} + | ~~~~~~~~~~~~~~~~~~~~~ ~~ error: this function can be simplified using the `async fn` syntax - --> tests/ui/manual_async_fn.rs:32:1 + --> tests/ui/manual_async_fn.rs:30:1 | LL | fn empty_fut3()-> impl Future { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | -help: make the function `async` and remove the return type - | -LL | async fn empty_fut3() { - | ~~~~~~~~~~~~~~~~~~~~~ -help: move the body of the async block to the enclosing function +help: make the function `async` and return the output of the future directly | -LL | fn empty_fut3()-> impl Future {} - | ~~ +LL | async fn empty_fut3() {} + | ~~~~~~~~~~~~~~~~~~~~~ ~~ error: this function can be simplified using the `async fn` syntax - --> tests/ui/manual_async_fn.rs:36:1 + --> tests/ui/manual_async_fn.rs:34:1 | LL | fn core_fut() -> impl core::future::Future { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: make the function `async` and return the output of the future directly | -LL | async fn core_fut() -> i32 { - | ~~~~~~~~~~~~~~~~~~~~~~~~~~ -help: move the body of the async block to the enclosing function - | -LL | fn core_fut() -> impl core::future::Future { 42 } - | ~~~~~~ +LL | async fn core_fut() -> i32 { 42 } + | ~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~ error: this function can be simplified using the `async fn` syntax - --> tests/ui/manual_async_fn.rs:58:5 + --> tests/ui/manual_async_fn.rs:56:5 | LL | fn inh_fut() -> impl Future { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: make the function `async` and return the output of the future directly | -LL | async fn inh_fut() -> i32 { - | ~~~~~~~~~~~~~~~~~~~~~~~~~ -help: move the body of the async block to the enclosing function - | -LL ~ fn inh_fut() -> impl Future { +LL ~ async fn inh_fut() -> i32 { LL + // NOTE: this code is here just to check that the indentation is correct in the suggested fix LL + let a = 42; LL + let b = 21; @@ -133,79 +101,59 @@ LL + } | error: this function can be simplified using the `async fn` syntax - --> tests/ui/manual_async_fn.rs:93:1 + --> tests/ui/manual_async_fn.rs:91:1 | LL | fn elided(_: &i32) -> impl Future + '_ { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: make the function `async` and return the output of the future directly | -LL | async fn elided(_: &i32) -> i32 { - | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -help: move the body of the async block to the enclosing function - | -LL | fn elided(_: &i32) -> impl Future + '_ { 42 } - | ~~~~~~ +LL | async fn elided(_: &i32) -> i32 { 42 } + | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~ error: this function can be simplified using the `async fn` syntax - --> tests/ui/manual_async_fn.rs:102:1 + --> tests/ui/manual_async_fn.rs:101:1 | LL | fn explicit<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future + 'a + 'b { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: make the function `async` and return the output of the future directly | -LL | async fn explicit<'a, 'b>(_: &'a i32, _: &'b i32) -> i32 { - | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -help: move the body of the async block to the enclosing function - | -LL | fn explicit<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future + 'a + 'b { 42 } - | ~~~~~~ +LL | async fn explicit<'a, 'b>(_: &'a i32, _: &'b i32) -> i32 { 42 } + | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~ error: this function can be simplified using the `async fn` syntax - --> tests/ui/manual_async_fn.rs:131:1 + --> tests/ui/manual_async_fn.rs:130:1 | LL | pub fn issue_10450() -> impl Future { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: make the function `async` and return the output of the future directly | -LL | pub async fn issue_10450() -> i32 { - | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -help: move the body of the async block to the enclosing function - | -LL | pub fn issue_10450() -> impl Future { 42 } - | ~~~~~~ +LL | pub async fn issue_10450() -> i32 { 42 } + | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~ error: this function can be simplified using the `async fn` syntax - --> tests/ui/manual_async_fn.rs:135:1 + --> tests/ui/manual_async_fn.rs:134:1 | LL | pub(crate) fn issue_10450_2() -> impl Future { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: make the function `async` and return the output of the future directly | -LL | pub(crate) async fn issue_10450_2() -> i32 { - | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -help: move the body of the async block to the enclosing function - | -LL | pub(crate) fn issue_10450_2() -> impl Future { 42 } - | ~~~~~~ +LL | pub(crate) async fn issue_10450_2() -> i32 { 42 } + | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~ error: this function can be simplified using the `async fn` syntax - --> tests/ui/manual_async_fn.rs:139:1 + --> tests/ui/manual_async_fn.rs:138:1 | LL | pub(self) fn issue_10450_3() -> impl Future { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: make the function `async` and return the output of the future directly | -LL | pub(self) async fn issue_10450_3() -> i32 { - | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -help: move the body of the async block to the enclosing function - | -LL | pub(self) fn issue_10450_3() -> impl Future { 42 } - | ~~~~~~ +LL | pub(self) async fn issue_10450_3() -> i32 { 42 } + | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~ error: aborting due to 13 previous errors -- cgit 1.4.1-3-g733a5 From dcc4025405776dcf14dca05113070a6b60f02311 Mon Sep 17 00:00:00 2001 From: Scott Gerring Date: Fri, 6 Dec 2024 16:04:21 +0100 Subject: chore: use multipart_suggestions for str_splitn --- clippy_lints/src/methods/str_splitn.rs | 22 ++--- tests/ui/manual_split_once.fixed | 144 +++++++++++++++++++++++++++++++++ tests/ui/manual_split_once.rs | 2 - tests/ui/manual_split_once.stderr | 108 +++++++++---------------- 4 files changed, 196 insertions(+), 80 deletions(-) create mode 100644 tests/ui/manual_split_once.fixed diff --git a/clippy_lints/src/methods/str_splitn.rs b/clippy_lints/src/methods/str_splitn.rs index c91be33b1cd..c6d4ef5911e 100644 --- a/clippy_lints/src/methods/str_splitn.rs +++ b/clippy_lints/src/methods/str_splitn.rs @@ -129,7 +129,7 @@ fn check_manual_split_once_indirect( let ctxt = expr.span.ctxt(); let mut parents = cx.tcx.hir().parent_iter(expr.hir_id); if let (_, Node::LetStmt(local)) = parents.next()? - && let PatKind::Binding(BindingMode::MUT, iter_binding_id, iter_ident, None) = local.pat.kind + && let PatKind::Binding(BindingMode::MUT, iter_binding_id, _, None) = local.pat.kind && let (iter_stmt_id, Node::Stmt(_)) = parents.next()? && let (_, Node::Block(enclosing_block)) = parents.next()? && let mut stmts = enclosing_block @@ -162,16 +162,20 @@ fn check_manual_split_once_indirect( UnwrapKind::Unwrap => ".unwrap()", UnwrapKind::QuestionMark => "?", }; - diag.span_suggestion_verbose( - local.span, - format!("try `{r}split_once`"), - format!("let ({lhs}, {rhs}) = {self_snip}.{r}split_once({pat_snip}){unwrap};"), + + // Add a multipart suggestion + diag.multipart_suggestion( + format!("replace with `{r}split_once`"), + vec![ + ( + local.span, + format!("let ({lhs}, {rhs}) = {self_snip}.{r}split_once({pat_snip}){unwrap};"), + ), + (first.span, String::new()), // Remove the first usage + (second.span, String::new()), // Remove the second usage + ], app, ); - - let remove_msg = format!("remove the `{iter_ident}` usages"); - diag.span_suggestion(first.span, remove_msg.clone(), "", app); - diag.span_suggestion(second.span, remove_msg, "", app); }); } diff --git a/tests/ui/manual_split_once.fixed b/tests/ui/manual_split_once.fixed new file mode 100644 index 00000000000..aaac6a048e1 --- /dev/null +++ b/tests/ui/manual_split_once.fixed @@ -0,0 +1,144 @@ +#![warn(clippy::manual_split_once)] +#![allow(unused, clippy::iter_skip_next, clippy::iter_nth_zero)] + +extern crate itertools; + +#[allow(unused_imports)] +use itertools::Itertools; + +fn main() { + let _ = "key=value".splitn(2, '=').nth(2); + let _ = "key=value".split_once('=').unwrap().1; + let _ = "key=value".split_once('=').unwrap().1; + let (_, _) = "key=value".split_once('=').unwrap(); + + let s = String::from("key=value"); + let _ = s.split_once('=').unwrap().1; + + let s = Box::::from("key=value"); + let _ = s.split_once('=').unwrap().1; + + let s = &"key=value"; + let _ = s.split_once('=').unwrap().1; + + fn _f(s: &str) -> Option<&str> { + let _ = s.split_once('=')?.1; + let _ = s.split_once('=')?.1; + let _ = s.rsplit_once('=')?.0; + let _ = s.rsplit_once('=')?.0; + None + } + + // Don't lint, slices don't have `split_once` + let _ = [0, 1, 2].splitn(2, |&x| x == 1).nth(1).unwrap(); + + // `rsplitn` gives the results in the reverse order of `rsplit_once` + let _ = "key=value".rsplit_once('=').unwrap().0; + let (_, _) = "key=value".rsplit_once('=').map(|(x, y)| (y, x)).unwrap(); + let _ = s.rsplit_once('=').map(|x| x.0); +} + +fn indirect() -> Option<()> { + let (l, r) = "a.b.c".split_once('.').unwrap(); + + + + let (l, r) = "a.b.c".split_once('.')?; + + + + let (l, r) = "a.b.c".rsplit_once('.').unwrap(); + + + + let (l, r) = "a.b.c".rsplit_once('.')?; + + + + // could lint, currently doesn't + + let mut iter = "a.b.c".splitn(2, '.'); + let other = 1; + let l = iter.next()?; + let r = iter.next()?; + + let mut iter = "a.b.c".splitn(2, '.'); + let mut mut_binding = iter.next()?; + let r = iter.next()?; + + let mut iter = "a.b.c".splitn(2, '.'); + let tuple = (iter.next()?, iter.next()?); + + // should not lint + + let mut missing_unwrap = "a.b.c".splitn(2, '.'); + let l = missing_unwrap.next(); + let r = missing_unwrap.next(); + + let mut mixed_unrap = "a.b.c".splitn(2, '.'); + let unwrap = mixed_unrap.next().unwrap(); + let question_mark = mixed_unrap.next()?; + + let mut iter = "a.b.c".splitn(2, '.'); + let same_name = iter.next()?; + let same_name = iter.next()?; + + let mut iter = "a.b.c".splitn(2, '.'); + let shadows_existing = "d"; + let shadows_existing = iter.next()?; + let r = iter.next()?; + + let mut iter = "a.b.c".splitn(2, '.'); + let becomes_shadowed = iter.next()?; + let becomes_shadowed = "d"; + let r = iter.next()?; + + let mut iter = "a.b.c".splitn(2, '.'); + let l = iter.next()?; + let r = iter.next()?; + let third_usage = iter.next()?; + + let mut n_three = "a.b.c".splitn(3, '.'); + let l = n_three.next()?; + let r = n_three.next()?; + + let mut iter = "a.b.c".splitn(2, '.'); + { + let in_block = iter.next()?; + } + let r = iter.next()?; + + let mut lacks_binding = "a.b.c".splitn(2, '.'); + let _ = lacks_binding.next()?; + let r = lacks_binding.next()?; + + let mut mapped = "a.b.c".splitn(2, '.').map(|_| "~"); + let l = iter.next()?; + let r = iter.next()?; + + let mut assigned = ""; + let mut iter = "a.b.c".splitn(2, '.'); + let l = iter.next()?; + assigned = iter.next()?; + + None +} + +#[clippy::msrv = "1.51"] +fn _msrv_1_51() { + // `str::split_once` was stabilized in 1.52. Do not lint this + let _ = "key=value".splitn(2, '=').nth(1).unwrap(); + + let mut iter = "a.b.c".splitn(2, '.'); + let a = iter.next().unwrap(); + let b = iter.next().unwrap(); +} + +#[clippy::msrv = "1.52"] +fn _msrv_1_52() { + let _ = "key=value".split_once('=').unwrap().1; + + let (a, b) = "a.b.c".split_once('.').unwrap(); + + +} diff --git a/tests/ui/manual_split_once.rs b/tests/ui/manual_split_once.rs index e13c827468b..113e1737c97 100644 --- a/tests/ui/manual_split_once.rs +++ b/tests/ui/manual_split_once.rs @@ -1,8 +1,6 @@ #![warn(clippy::manual_split_once)] #![allow(unused, clippy::iter_skip_next, clippy::iter_nth_zero)] -//@no-rustfix: need to change the suggestion to a multipart suggestion - extern crate itertools; #[allow(unused_imports)] diff --git a/tests/ui/manual_split_once.stderr b/tests/ui/manual_split_once.stderr index 566204ad876..366d860f25e 100644 --- a/tests/ui/manual_split_once.stderr +++ b/tests/ui/manual_split_once.stderr @@ -1,5 +1,5 @@ error: manual implementation of `split_once` - --> tests/ui/manual_split_once.rs:13:13 + --> tests/ui/manual_split_once.rs:11:13 | LL | let _ = "key=value".splitn(2, '=').nth(1).unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `"key=value".split_once('=').unwrap().1` @@ -8,79 +8,79 @@ LL | let _ = "key=value".splitn(2, '=').nth(1).unwrap(); = help: to override `-D warnings` add `#[allow(clippy::manual_split_once)]` error: manual implementation of `split_once` - --> tests/ui/manual_split_once.rs:14:13 + --> tests/ui/manual_split_once.rs:12:13 | LL | let _ = "key=value".splitn(2, '=').skip(1).next().unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `"key=value".split_once('=').unwrap().1` error: manual implementation of `split_once` - --> tests/ui/manual_split_once.rs:15:18 + --> tests/ui/manual_split_once.rs:13:18 | LL | let (_, _) = "key=value".splitn(2, '=').next_tuple().unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `"key=value".split_once('=')` error: manual implementation of `split_once` - --> tests/ui/manual_split_once.rs:18:13 + --> tests/ui/manual_split_once.rs:16:13 | LL | let _ = s.splitn(2, '=').nth(1).unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `s.split_once('=').unwrap().1` error: manual implementation of `split_once` - --> tests/ui/manual_split_once.rs:21:13 + --> tests/ui/manual_split_once.rs:19:13 | LL | let _ = s.splitn(2, '=').nth(1).unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `s.split_once('=').unwrap().1` error: manual implementation of `split_once` - --> tests/ui/manual_split_once.rs:24:13 + --> tests/ui/manual_split_once.rs:22:13 | LL | let _ = s.splitn(2, '=').skip(1).next().unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `s.split_once('=').unwrap().1` error: manual implementation of `split_once` - --> tests/ui/manual_split_once.rs:27:17 + --> tests/ui/manual_split_once.rs:25:17 | LL | let _ = s.splitn(2, '=').nth(1)?; | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `s.split_once('=')?.1` error: manual implementation of `split_once` - --> tests/ui/manual_split_once.rs:28:17 + --> tests/ui/manual_split_once.rs:26:17 | LL | let _ = s.splitn(2, '=').skip(1).next()?; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `s.split_once('=')?.1` error: manual implementation of `rsplit_once` - --> tests/ui/manual_split_once.rs:29:17 + --> tests/ui/manual_split_once.rs:27:17 | LL | let _ = s.rsplitn(2, '=').nth(1)?; | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `s.rsplit_once('=')?.0` error: manual implementation of `rsplit_once` - --> tests/ui/manual_split_once.rs:30:17 + --> tests/ui/manual_split_once.rs:28:17 | LL | let _ = s.rsplitn(2, '=').skip(1).next()?; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `s.rsplit_once('=')?.0` error: manual implementation of `rsplit_once` - --> tests/ui/manual_split_once.rs:38:13 + --> tests/ui/manual_split_once.rs:36:13 | LL | let _ = "key=value".rsplitn(2, '=').nth(1).unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `"key=value".rsplit_once('=').unwrap().0` error: manual implementation of `rsplit_once` - --> tests/ui/manual_split_once.rs:39:18 + --> tests/ui/manual_split_once.rs:37:18 | LL | let (_, _) = "key=value".rsplitn(2, '=').next_tuple().unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `"key=value".rsplit_once('=').map(|(x, y)| (y, x))` error: manual implementation of `rsplit_once` - --> tests/ui/manual_split_once.rs:40:13 + --> tests/ui/manual_split_once.rs:38:13 | LL | let _ = s.rsplitn(2, '=').nth(1); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `s.rsplit_once('=').map(|x| x.0)` error: manual implementation of `split_once` - --> tests/ui/manual_split_once.rs:44:5 + --> tests/ui/manual_split_once.rs:42:5 | LL | let mut iter = "a.b.c".splitn(2, '.'); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -89,21 +89,15 @@ LL | let l = iter.next().unwrap(); LL | let r = iter.next().unwrap(); | ----------------------------- second usage here | -help: try `split_once` - | -LL | let (l, r) = "a.b.c".split_once('.').unwrap(); +help: replace with `split_once` | -help: remove the `iter` usages - | -LL - let l = iter.next().unwrap(); - | -help: remove the `iter` usages - | -LL - let r = iter.next().unwrap(); +LL ~ let (l, r) = "a.b.c".split_once('.').unwrap(); +LL ~ +LL ~ | error: manual implementation of `split_once` - --> tests/ui/manual_split_once.rs:48:5 + --> tests/ui/manual_split_once.rs:46:5 | LL | let mut iter = "a.b.c".splitn(2, '.'); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -112,21 +106,15 @@ LL | let l = iter.next()?; LL | let r = iter.next()?; | --------------------- second usage here | -help: try `split_once` - | -LL | let (l, r) = "a.b.c".split_once('.')?; - | -help: remove the `iter` usages - | -LL - let l = iter.next()?; +help: replace with `split_once` | -help: remove the `iter` usages - | -LL - let r = iter.next()?; +LL ~ let (l, r) = "a.b.c".split_once('.')?; +LL ~ +LL ~ | error: manual implementation of `rsplit_once` - --> tests/ui/manual_split_once.rs:52:5 + --> tests/ui/manual_split_once.rs:50:5 | LL | let mut iter = "a.b.c".rsplitn(2, '.'); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -135,21 +123,15 @@ LL | let r = iter.next().unwrap(); LL | let l = iter.next().unwrap(); | ----------------------------- second usage here | -help: try `rsplit_once` - | -LL | let (l, r) = "a.b.c".rsplit_once('.').unwrap(); - | -help: remove the `iter` usages - | -LL - let r = iter.next().unwrap(); +help: replace with `rsplit_once` | -help: remove the `iter` usages - | -LL - let l = iter.next().unwrap(); +LL ~ let (l, r) = "a.b.c".rsplit_once('.').unwrap(); +LL ~ +LL ~ | error: manual implementation of `rsplit_once` - --> tests/ui/manual_split_once.rs:56:5 + --> tests/ui/manual_split_once.rs:54:5 | LL | let mut iter = "a.b.c".rsplitn(2, '.'); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -158,27 +140,21 @@ LL | let r = iter.next()?; LL | let l = iter.next()?; | --------------------- second usage here | -help: try `rsplit_once` - | -LL | let (l, r) = "a.b.c".rsplit_once('.')?; - | -help: remove the `iter` usages +help: replace with `rsplit_once` | -LL - let r = iter.next()?; - | -help: remove the `iter` usages - | -LL - let l = iter.next()?; +LL ~ let (l, r) = "a.b.c".rsplit_once('.')?; +LL ~ +LL ~ | error: manual implementation of `split_once` - --> tests/ui/manual_split_once.rs:141:13 + --> tests/ui/manual_split_once.rs:139:13 | LL | let _ = "key=value".splitn(2, '=').nth(1).unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `"key=value".split_once('=').unwrap().1` error: manual implementation of `split_once` - --> tests/ui/manual_split_once.rs:143:5 + --> tests/ui/manual_split_once.rs:141:5 | LL | let mut iter = "a.b.c".splitn(2, '.'); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -187,17 +163,11 @@ LL | let a = iter.next().unwrap(); LL | let b = iter.next().unwrap(); | ----------------------------- second usage here | -help: try `split_once` - | -LL | let (a, b) = "a.b.c".split_once('.').unwrap(); - | -help: remove the `iter` usages - | -LL - let a = iter.next().unwrap(); - | -help: remove the `iter` usages +help: replace with `split_once` | -LL - let b = iter.next().unwrap(); +LL ~ let (a, b) = "a.b.c".split_once('.').unwrap(); +LL ~ +LL ~ | error: aborting due to 19 previous errors -- cgit 1.4.1-3-g733a5 From 63e49793997c3160c02b0ec4e14d75cedf08fc16 Mon Sep 17 00:00:00 2001 From: bjorn3 <17426603+bjorn3@users.noreply.github.com> Date: Sun, 3 Nov 2024 16:45:22 +0000 Subject: Remove all threading through of ErrorGuaranteed from the driver It was inconsistently done (sometimes even within a single function) and most of the rest of the compiler uses fatal errors instead, which need to be caught using catch_with_exit_code anyway. Using fatal errors instead of ErrorGuaranteed everywhere in the driver simplifies things a bit. --- src/driver.rs | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/src/driver.rs b/src/driver.rs index c66837dc998..32ee668cda1 100644 --- a/src/driver.rs +++ b/src/driver.rs @@ -236,7 +236,8 @@ pub fn main() { let mut args: Vec = orig_args.clone(); pass_sysroot_env_if_given(&mut args, sys_root_env); - return rustc_driver::RunCompiler::new(&args, &mut DefaultCallbacks).run(); + rustc_driver::RunCompiler::new(&args, &mut DefaultCallbacks).run(); + return Ok(()); } if orig_args.iter().any(|a| a == "--version" || a == "-V") { @@ -296,12 +297,13 @@ pub fn main() { args.extend(clippy_args); rustc_driver::RunCompiler::new(&args, &mut ClippyCallbacks { clippy_args_var }) .set_using_internal_features(using_internal_features) - .run() + .run(); } else { rustc_driver::RunCompiler::new(&args, &mut RustcCallbacks { clippy_args_var }) .set_using_internal_features(using_internal_features) - .run() + .run(); } + return Ok(()); })) } -- cgit 1.4.1-3-g733a5 From 149671192dcbdab92772a37f23cf9166c51be124 Mon Sep 17 00:00:00 2001 From: Soveu Date: Sat, 10 Aug 2024 21:25:35 +0200 Subject: new lint for `as *const _` and `as *mut _` casting --- CHANGELOG.md | 1 + clippy_lints/src/casts/as_pointer_underscore.rs | 19 ++++++++++++++++ clippy_lints/src/casts/mod.rs | 30 +++++++++++++++++++++++++ clippy_lints/src/declared_lints.rs | 1 + tests/ui/as_pointer_underscore.fixed | 15 +++++++++++++ tests/ui/as_pointer_underscore.rs | 15 +++++++++++++ tests/ui/as_pointer_underscore.stderr | 17 ++++++++++++++ 7 files changed, 98 insertions(+) create mode 100644 clippy_lints/src/casts/as_pointer_underscore.rs create mode 100644 tests/ui/as_pointer_underscore.fixed create mode 100644 tests/ui/as_pointer_underscore.rs create mode 100644 tests/ui/as_pointer_underscore.stderr diff --git a/CHANGELOG.md b/CHANGELOG.md index bf49ddfbd74..cc966972939 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -5380,6 +5380,7 @@ Released 2018-09-13 [`arc_with_non_send_sync`]: https://rust-lang.github.io/rust-clippy/master/index.html#arc_with_non_send_sync [`arithmetic_side_effects`]: https://rust-lang.github.io/rust-clippy/master/index.html#arithmetic_side_effects [`as_conversions`]: https://rust-lang.github.io/rust-clippy/master/index.html#as_conversions +[`as_pointer_underscore`]: https://rust-lang.github.io/rust-clippy/master/index.html#as_pointer_underscore [`as_ptr_cast_mut`]: https://rust-lang.github.io/rust-clippy/master/index.html#as_ptr_cast_mut [`as_underscore`]: https://rust-lang.github.io/rust-clippy/master/index.html#as_underscore [`assertions_on_constants`]: https://rust-lang.github.io/rust-clippy/master/index.html#assertions_on_constants diff --git a/clippy_lints/src/casts/as_pointer_underscore.rs b/clippy_lints/src/casts/as_pointer_underscore.rs new file mode 100644 index 00000000000..536126fd02b --- /dev/null +++ b/clippy_lints/src/casts/as_pointer_underscore.rs @@ -0,0 +1,19 @@ +use rustc_errors::Applicability; +use rustc_lint::LateContext; +use rustc_middle::ty::Ty; + +pub fn check<'tcx>(cx: &LateContext<'tcx>, ty_into: Ty<'_>, cast_to_hir: &'tcx rustc_hir::Ty<'tcx>) { + if let rustc_hir::TyKind::Ptr(rustc_hir::MutTy { ty, .. }) = cast_to_hir.kind + && matches!(ty.kind, rustc_hir::TyKind::Infer) + { + clippy_utils::diagnostics::span_lint_and_sugg( + cx, + super::AS_POINTER_UNDERSCORE, + cast_to_hir.span, + "using inferred pointer cast", + "use explicit type", + ty_into.to_string(), + Applicability::MachineApplicable, + ); + } +} diff --git a/clippy_lints/src/casts/mod.rs b/clippy_lints/src/casts/mod.rs index 84fab9cb75f..c64c0e15144 100644 --- a/clippy_lints/src/casts/mod.rs +++ b/clippy_lints/src/casts/mod.rs @@ -1,3 +1,4 @@ +mod as_pointer_underscore; mod as_ptr_cast_mut; mod as_underscore; mod borrow_as_ptr; @@ -726,6 +727,33 @@ declare_clippy_lint! { "using `as` to cast a reference to pointer" } +declare_clippy_lint! { + /// ### What it does + /// Checks for the usage of `as *const _` or `as *mut _` conversion using inferred type. + /// + /// ### Why restrict this? + /// The conversion might include a dangerous cast that might go undetected due to the type being inferred. + /// + /// ### Example + /// ```no_run + /// fn as_usize(t: &T) -> usize { + /// // BUG: `t` is already a reference, so we will here + /// // return a dangling pointer to a temporary value instead + /// &t as *const _ as usize + /// } + /// ``` + /// Use instead: + /// ```no_run + /// fn as_usize(t: &T) -> usize { + /// t as *const T as usize + /// } + /// ``` + #[clippy::version = "1.81.0"] + pub AS_POINTER_UNDERSCORE, + restriction, + "detects `as *mut _` and `as *const _` conversion" +} + pub struct Casts { msrv: Msrv, } @@ -763,6 +791,7 @@ impl_lint_pass!(Casts => [ CAST_NAN_TO_INT, ZERO_PTR, REF_AS_PTR, + AS_POINTER_UNDERSCORE, ]); impl<'tcx> LateLintPass<'tcx> for Casts { @@ -805,6 +834,7 @@ impl<'tcx> LateLintPass<'tcx> for Casts { } as_underscore::check(cx, expr, cast_to_hir); + as_pointer_underscore::check(cx, cast_to, cast_to_hir); let was_borrow_as_ptr_emitted = if self.msrv.meets(msrvs::BORROW_AS_PTR) { borrow_as_ptr::check(cx, expr, cast_from_expr, cast_to_hir, &self.msrv) diff --git a/clippy_lints/src/declared_lints.rs b/clippy_lints/src/declared_lints.rs index 1dcf3a87449..304622afe53 100644 --- a/clippy_lints/src/declared_lints.rs +++ b/clippy_lints/src/declared_lints.rs @@ -75,6 +75,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::cargo::NEGATIVE_FEATURE_NAMES_INFO, crate::cargo::REDUNDANT_FEATURE_NAMES_INFO, crate::cargo::WILDCARD_DEPENDENCIES_INFO, + crate::casts::AS_POINTER_UNDERSCORE_INFO, crate::casts::AS_PTR_CAST_MUT_INFO, crate::casts::AS_UNDERSCORE_INFO, crate::casts::BORROW_AS_PTR_INFO, diff --git a/tests/ui/as_pointer_underscore.fixed b/tests/ui/as_pointer_underscore.fixed new file mode 100644 index 00000000000..db06486ecb0 --- /dev/null +++ b/tests/ui/as_pointer_underscore.fixed @@ -0,0 +1,15 @@ +#![warn(clippy::as_pointer_underscore)] +#![crate_type = "lib"] +#![no_std] + +struct S; + +fn f(s: &S) -> usize { + &s as *const &S as usize + //~^ ERROR: using inferred pointer cast +} + +fn g(s: &mut S) -> usize { + s as *mut S as usize + //~^ ERROR: using inferred pointer cast +} diff --git a/tests/ui/as_pointer_underscore.rs b/tests/ui/as_pointer_underscore.rs new file mode 100644 index 00000000000..955c702ccc9 --- /dev/null +++ b/tests/ui/as_pointer_underscore.rs @@ -0,0 +1,15 @@ +#![warn(clippy::as_pointer_underscore)] +#![crate_type = "lib"] +#![no_std] + +struct S; + +fn f(s: &S) -> usize { + &s as *const _ as usize + //~^ ERROR: using inferred pointer cast +} + +fn g(s: &mut S) -> usize { + s as *mut _ as usize + //~^ ERROR: using inferred pointer cast +} diff --git a/tests/ui/as_pointer_underscore.stderr b/tests/ui/as_pointer_underscore.stderr new file mode 100644 index 00000000000..270056f3645 --- /dev/null +++ b/tests/ui/as_pointer_underscore.stderr @@ -0,0 +1,17 @@ +error: using inferred pointer cast + --> tests/ui/as_pointer_underscore.rs:8:11 + | +LL | &s as *const _ as usize + | ^^^^^^^^ help: use explicit type: `*const &S` + | + = note: `-D clippy::as-pointer-underscore` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::as_pointer_underscore)]` + +error: using inferred pointer cast + --> tests/ui/as_pointer_underscore.rs:13:10 + | +LL | s as *mut _ as usize + | ^^^^^^ help: use explicit type: `*mut S` + +error: aborting due to 2 previous errors + -- cgit 1.4.1-3-g733a5 From 0a99eec958e678e215c54fbf9adc13a9845a1d2a Mon Sep 17 00:00:00 2001 From: nora <48135649+Noratrieb@users.noreply.github.com> Date: Sat, 7 Dec 2024 13:35:05 +0100 Subject: Update known problems for default_numeric_fallback The existing known problem is not actually true, and the many false positives and false negatives should be mentioned. --- clippy_lints/src/default_numeric_fallback.rs | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/clippy_lints/src/default_numeric_fallback.rs b/clippy_lints/src/default_numeric_fallback.rs index ef6b141920d..c3f907ee7fb 100644 --- a/clippy_lints/src/default_numeric_fallback.rs +++ b/clippy_lints/src/default_numeric_fallback.rs @@ -26,7 +26,8 @@ declare_clippy_lint! { /// To ensure that every numeric type is chosen explicitly rather than implicitly. /// /// ### Known problems - /// This lint can only be allowed at the function level or above. + /// This lint is implemented using a custom algorithm independent of rustc's inference, + /// which results in many false positives and false negatives. /// /// ### Example /// ```no_run @@ -36,8 +37,8 @@ declare_clippy_lint! { /// /// Use instead: /// ```no_run - /// let i = 10i32; - /// let f = 1.23f64; + /// let i = 10_i32; + /// let f = 1.23_f64; /// ``` #[clippy::version = "1.52.0"] pub DEFAULT_NUMERIC_FALLBACK, -- cgit 1.4.1-3-g733a5 From cfee37d35872763f3af97da66081979f91141145 Mon Sep 17 00:00:00 2001 From: Jack Wrenn Date: Fri, 6 Dec 2024 17:11:36 +0000 Subject: Make `Copy` unsafe to implement for ADTs with `unsafe` fields As a rule, the application of `unsafe` to a declaration requires that use-sites of that declaration also require `unsafe`. For example, a field declared `unsafe` may only be read in the lexical context of an `unsafe` block. For nearly all safe traits, the safety obligations of fields are explicitly discharged when they are mentioned in method definitions. For example, idiomatically implementing `Clone` (a safe trait) for a type with unsafe fields will require `unsafe` to clone those fields. Prior to this commit, `Copy` violated this rule. The trait is marked safe, and although it has no explicit methods, its implementation permits reads of `Self`. This commit resolves this by making `Copy` conditionally safe to implement. It remains safe to implement for ADTs without unsafe fields, but unsafe to implement for ADTs with unsafe fields. Tracking: #132922 --- clippy_lints/src/needless_pass_by_value.rs | 1 + 1 file changed, 1 insertion(+) diff --git a/clippy_lints/src/needless_pass_by_value.rs b/clippy_lints/src/needless_pass_by_value.rs index cd90d2f90f7..6f3f371a68d 100644 --- a/clippy_lints/src/needless_pass_by_value.rs +++ b/clippy_lints/src/needless_pass_by_value.rs @@ -200,6 +200,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue { cx.param_env, ty, traits::ObligationCause::dummy_with_span(span), + rustc_hir::Safety::Safe, ) .is_ok() { -- cgit 1.4.1-3-g733a5 From 69411e0e760820052d9f77f0e0a3635e7bc76a00 Mon Sep 17 00:00:00 2001 From: Samuel Tardieu Date: Sat, 30 Nov 2024 14:53:17 +0100 Subject: Better help message for comparison_chain lint --- clippy_lints/src/comparison_chain.rs | 16 ++++++++--- tests/ui/comparison_chain.rs | 13 +++++++++ tests/ui/comparison_chain.stderr | 53 ++++++++++++++++++------------------ 3 files changed, 51 insertions(+), 31 deletions(-) diff --git a/clippy_lints/src/comparison_chain.rs b/clippy_lints/src/comparison_chain.rs index c85e3500ebd..61c92d441d0 100644 --- a/clippy_lints/src/comparison_chain.rs +++ b/clippy_lints/src/comparison_chain.rs @@ -1,6 +1,8 @@ -use clippy_utils::diagnostics::span_lint_and_help; +use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::sugg::Sugg; use clippy_utils::ty::implements_trait; use clippy_utils::{SpanlessEq, if_sequence, is_else_clause, is_in_const_context}; +use rustc_errors::Applicability; use rustc_hir::{BinOpKind, Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; @@ -120,13 +122,19 @@ impl<'tcx> LateLintPass<'tcx> for ComparisonChain { return; } } - span_lint_and_help( + let ExprKind::Binary(_, lhs, rhs) = conds[0].kind else { + unreachable!(); + }; + let lhs = Sugg::hir(cx, lhs, "..").maybe_par(); + let rhs = Sugg::hir(cx, rhs, "..").addr(); + span_lint_and_sugg( cx, COMPARISON_CHAIN, expr.span, "`if` chain can be rewritten with `match`", - None, - "consider rewriting the `if` chain to use `cmp` and `match`", + "consider rewriting the `if` chain with `match`", + format!("match {lhs}.cmp({rhs}) {{...}}"), + Applicability::HasPlaceholders, ); } } diff --git a/tests/ui/comparison_chain.rs b/tests/ui/comparison_chain.rs index 266cee4c338..cab460d100d 100644 --- a/tests/ui/comparison_chain.rs +++ b/tests/ui/comparison_chain.rs @@ -1,3 +1,4 @@ +//@no-rustfix #![allow(dead_code)] #![warn(clippy::comparison_chain)] @@ -238,4 +239,16 @@ const fn sign_i8(n: i8) -> Sign { } } +fn needs_parens() -> &'static str { + let (x, y) = (1, 2); + if x + 1 > y * 2 { + //~^ ERROR: `if` chain can be rewritten with `match` + "aa" + } else if x + 1 < y * 2 { + "bb" + } else { + "cc" + } +} + fn main() {} diff --git a/tests/ui/comparison_chain.stderr b/tests/ui/comparison_chain.stderr index 96d8d819e6a..814004e3d4b 100644 --- a/tests/ui/comparison_chain.stderr +++ b/tests/ui/comparison_chain.stderr @@ -1,5 +1,5 @@ error: `if` chain can be rewritten with `match` - --> tests/ui/comparison_chain.rs:14:5 + --> tests/ui/comparison_chain.rs:15:5 | LL | / if x > y { LL | | @@ -7,14 +7,13 @@ LL | | a() LL | | } else if x < y { LL | | b() LL | | } - | |_____^ + | |_____^ help: consider rewriting the `if` chain with `match`: `match x.cmp(&y) {...}` | - = help: consider rewriting the `if` chain to use `cmp` and `match` = note: `-D clippy::comparison-chain` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::comparison_chain)]` error: `if` chain can be rewritten with `match` - --> tests/ui/comparison_chain.rs:28:5 + --> tests/ui/comparison_chain.rs:29:5 | LL | / if x > y { LL | | @@ -23,12 +22,10 @@ LL | | } else if x < y { ... | LL | | c() LL | | } - | |_____^ - | - = help: consider rewriting the `if` chain to use `cmp` and `match` + | |_____^ help: consider rewriting the `if` chain with `match`: `match x.cmp(&y) {...}` error: `if` chain can be rewritten with `match` - --> tests/ui/comparison_chain.rs:37:5 + --> tests/ui/comparison_chain.rs:38:5 | LL | / if x > y { LL | | @@ -37,12 +34,10 @@ LL | | } else if y > x { ... | LL | | c() LL | | } - | |_____^ - | - = help: consider rewriting the `if` chain to use `cmp` and `match` + | |_____^ help: consider rewriting the `if` chain with `match`: `match x.cmp(&y) {...}` error: `if` chain can be rewritten with `match` - --> tests/ui/comparison_chain.rs:46:5 + --> tests/ui/comparison_chain.rs:47:5 | LL | / if x > 1 { LL | | @@ -51,12 +46,10 @@ LL | | } else if x < 1 { ... | LL | | c() LL | | } - | |_____^ - | - = help: consider rewriting the `if` chain to use `cmp` and `match` + | |_____^ help: consider rewriting the `if` chain with `match`: `match x.cmp(&1) {...}` error: `if` chain can be rewritten with `match` - --> tests/ui/comparison_chain.rs:121:5 + --> tests/ui/comparison_chain.rs:122:5 | LL | / if x > y { LL | | @@ -64,12 +57,10 @@ LL | | a() LL | | } else if x < y { LL | | b() LL | | } - | |_____^ - | - = help: consider rewriting the `if` chain to use `cmp` and `match` + | |_____^ help: consider rewriting the `if` chain with `match`: `match x.cmp(&y) {...}` error: `if` chain can be rewritten with `match` - --> tests/ui/comparison_chain.rs:128:5 + --> tests/ui/comparison_chain.rs:129:5 | LL | / if x > y { LL | | @@ -78,12 +69,10 @@ LL | | } else if x < y { ... | LL | | c() LL | | } - | |_____^ - | - = help: consider rewriting the `if` chain to use `cmp` and `match` + | |_____^ help: consider rewriting the `if` chain with `match`: `match x.cmp(&y) {...}` error: `if` chain can be rewritten with `match` - --> tests/ui/comparison_chain.rs:137:5 + --> tests/ui/comparison_chain.rs:138:5 | LL | / if x > y { LL | | @@ -92,9 +81,19 @@ LL | | } else if y > x { ... | LL | | c() LL | | } - | |_____^ + | |_____^ help: consider rewriting the `if` chain with `match`: `match x.cmp(&y) {...}` + +error: `if` chain can be rewritten with `match` + --> tests/ui/comparison_chain.rs:244:5 | - = help: consider rewriting the `if` chain to use `cmp` and `match` +LL | / if x + 1 > y * 2 { +LL | | +LL | | "aa" +LL | | } else if x + 1 < y * 2 { +... | +LL | | "cc" +LL | | } + | |_____^ help: consider rewriting the `if` chain with `match`: `match (x + 1).cmp(&(y * 2)) {...}` -error: aborting due to 7 previous errors +error: aborting due to 8 previous errors -- cgit 1.4.1-3-g733a5 From f51f72b400b554effa48811534219430b68f3861 Mon Sep 17 00:00:00 2001 From: Samuel Tardieu Date: Sun, 8 Dec 2024 22:33:39 +0100 Subject: Detect shadowing in pattern field --- clippy_lints/src/shadow.rs | 2 +- tests/ui/shadow.rs | 8 ++++++++ tests/ui/shadow.stderr | 14 +++++++++++++- 3 files changed, 22 insertions(+), 2 deletions(-) diff --git a/clippy_lints/src/shadow.rs b/clippy_lints/src/shadow.rs index 49d22377119..83199ba0f70 100644 --- a/clippy_lints/src/shadow.rs +++ b/clippy_lints/src/shadow.rs @@ -263,7 +263,7 @@ fn is_self_shadow(cx: &LateContext<'_>, pat: &Pat<'_>, mut expr: &Expr<'_>, hir_ fn find_init<'tcx>(cx: &LateContext<'tcx>, hir_id: HirId) -> Option<(&'tcx Expr<'tcx>, Option)> { for (hir_id, node) in cx.tcx.hir().parent_iter(hir_id) { let init = match node { - Node::Arm(_) | Node::Pat(_) | Node::Param(_) => continue, + Node::Arm(_) | Node::Pat(_) | Node::PatField(_) | Node::Param(_) => continue, Node::Expr(expr) => match expr.kind { ExprKind::Match(e, _, _) | ExprKind::Let(&LetExpr { init: e, .. }) => Some((e, None)), // If we're a closure argument, then a parent call is also an associated item. diff --git a/tests/ui/shadow.rs b/tests/ui/shadow.rs index 30b96277f99..31944f5ef1b 100644 --- a/tests/ui/shadow.rs +++ b/tests/ui/shadow.rs @@ -133,4 +133,12 @@ fn shadow_closure() { .collect(); } +struct Issue13795 { + value: i32, +} + +fn issue13795(value: Issue13795) { + let Issue13795 { value, .. } = value; +} + fn main() {} diff --git a/tests/ui/shadow.stderr b/tests/ui/shadow.stderr index 5d2d7060450..c8c524b3a2f 100644 --- a/tests/ui/shadow.stderr +++ b/tests/ui/shadow.stderr @@ -304,5 +304,17 @@ note: previous binding is here LL | .map(|i| i.map(|i| i - 10)) | ^ -error: aborting due to 25 previous errors +error: `value` is shadowed by itself in `value` + --> tests/ui/shadow.rs:141:22 + | +LL | let Issue13795 { value, .. } = value; + | ^^^^^ + | +note: previous binding is here + --> tests/ui/shadow.rs:140:15 + | +LL | fn issue13795(value: Issue13795) { + | ^^^^^ + +error: aborting due to 26 previous errors -- cgit 1.4.1-3-g733a5 From a9594c163578d4827b783fe7ee7929c8737c67ff Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Sat, 7 Dec 2024 17:22:09 +0100 Subject: fix ICE on type error in promoted --- clippy_lints/src/non_copy_const.rs | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/clippy_lints/src/non_copy_const.rs b/clippy_lints/src/non_copy_const.rs index 5f253b9e5d5..ebd301d5156 100644 --- a/clippy_lints/src/non_copy_const.rs +++ b/clippy_lints/src/non_copy_const.rs @@ -11,7 +11,7 @@ use rustc_hir::{ BodyId, Expr, ExprKind, HirId, Impl, ImplItem, ImplItemKind, Item, ItemKind, Node, TraitItem, TraitItemKind, UnOp, }; use rustc_lint::{LateContext, LateLintPass, Lint}; -use rustc_middle::mir::interpret::{ErrorHandled, EvalToValTreeResult, GlobalId}; +use rustc_middle::mir::interpret::{ErrorHandled, EvalToValTreeResult, GlobalId, ReportedErrorInfo}; use rustc_middle::ty::adjustment::Adjust; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_session::impl_lint_pass; @@ -302,7 +302,10 @@ impl<'tcx> NonCopyConst<'tcx> { tcx.const_eval_global_id_for_typeck(typing_env, cid, span) }, Ok(None) => Err(ErrorHandled::TooGeneric(span)), - Err(err) => Err(ErrorHandled::Reported(err.into(), span)), + Err(err) => Err(ErrorHandled::Reported( + ReportedErrorInfo::non_const_eval_error(err), + span, + )), } } } -- cgit 1.4.1-3-g733a5 From d5059d8c1db2db4bf8bdcef00deaed9c8f365ead Mon Sep 17 00:00:00 2001 From: lapla-cogito Date: Tue, 10 Dec 2024 00:00:51 +0900 Subject: remove unnecessary notations --- clippy_lints/src/disallowed_macros.rs | 1 - clippy_lints/src/disallowed_methods.rs | 2 -- clippy_lints/src/methods/mod.rs | 5 ----- clippy_lints/src/missing_const_for_thread_local.rs | 2 -- clippy_lints/src/strings.rs | 4 ---- 5 files changed, 14 deletions(-) diff --git a/clippy_lints/src/disallowed_macros.rs b/clippy_lints/src/disallowed_macros.rs index a0cb36f88dc..a78c392e208 100644 --- a/clippy_lints/src/disallowed_macros.rs +++ b/clippy_lints/src/disallowed_macros.rs @@ -43,7 +43,6 @@ declare_clippy_lint! { /// ```no_run /// use serde::Serialize; /// - /// // Example code where clippy issues a warning /// println!("warns"); /// /// // The diagnostic will contain the message "no serializing" diff --git a/clippy_lints/src/disallowed_methods.rs b/clippy_lints/src/disallowed_methods.rs index 1e660b1957a..c4ed118b7c9 100644 --- a/clippy_lints/src/disallowed_methods.rs +++ b/clippy_lints/src/disallowed_methods.rs @@ -35,7 +35,6 @@ declare_clippy_lint! { /// ``` /// /// ```rust,ignore - /// // Example code where clippy issues a warning /// let xs = vec![1, 2, 3, 4]; /// xs.leak(); // Vec::leak is disallowed in the config. /// // The diagnostic contains the message "no leaking memory". @@ -47,7 +46,6 @@ declare_clippy_lint! { /// /// Use instead: /// ```rust,ignore - /// // Example code which does not raise clippy warning /// let mut xs = Vec::new(); // Vec::new is _not_ disallowed in the config. /// xs.push(123); // Vec::push is _not_ disallowed in the config. /// ``` diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs index 5c6d59d2542..810287fa541 100644 --- a/clippy_lints/src/methods/mod.rs +++ b/clippy_lints/src/methods/mod.rs @@ -1864,7 +1864,6 @@ declare_clippy_lint! { /// /// ### Example /// ```no_run - /// // example code where clippy issues a warning /// let opt: Option = None; /// /// opt.unwrap_or_else(|| 42); @@ -3839,13 +3838,11 @@ declare_clippy_lint! { /// /// ### Example /// ```no_run - /// // example code where clippy issues a warning /// vec![Some(1)].into_iter().filter(Option::is_some); /// /// ``` /// Use instead: /// ```no_run - /// // example code which does not raise clippy warning /// vec![Some(1)].into_iter().flatten(); /// ``` #[clippy::version = "1.77.0"] @@ -3865,13 +3862,11 @@ declare_clippy_lint! { /// /// ### Example /// ```no_run - /// // example code where clippy issues a warning /// vec![Ok::(1)].into_iter().filter(Result::is_ok); /// /// ``` /// Use instead: /// ```no_run - /// // example code which does not raise clippy warning /// vec![Ok::(1)].into_iter().flatten(); /// ``` #[clippy::version = "1.77.0"] diff --git a/clippy_lints/src/missing_const_for_thread_local.rs b/clippy_lints/src/missing_const_for_thread_local.rs index 9a44a3c980c..e2ca4458eda 100644 --- a/clippy_lints/src/missing_const_for_thread_local.rs +++ b/clippy_lints/src/missing_const_for_thread_local.rs @@ -27,14 +27,12 @@ declare_clippy_lint! { /// /// ### Example /// ```no_run - /// // example code where clippy issues a warning /// thread_local! { /// static BUF: String = String::new(); /// } /// ``` /// Use instead: /// ```no_run - /// // example code which does not raise clippy warning /// thread_local! { /// static BUF: String = const { String::new() }; /// } diff --git a/clippy_lints/src/strings.rs b/clippy_lints/src/strings.rs index e09c0706006..2925f355d0b 100644 --- a/clippy_lints/src/strings.rs +++ b/clippy_lints/src/strings.rs @@ -370,12 +370,10 @@ declare_clippy_lint! { /// /// ### Example /// ```no_run - /// // example code where clippy issues a warning /// let _ = "str".to_string(); /// ``` /// Use instead: /// ```no_run - /// // example code which does not raise clippy warning /// let _ = "str".to_owned(); /// ``` #[clippy::version = "pre 1.29.0"] @@ -424,13 +422,11 @@ declare_clippy_lint! { /// /// ### Example /// ```no_run - /// // example code where clippy issues a warning /// let msg = String::from("Hello World"); /// let _ = msg.to_string(); /// ``` /// Use instead: /// ```no_run - /// // example code which does not raise clippy warning /// let msg = String::from("Hello World"); /// let _ = msg.clone(); /// ``` -- cgit 1.4.1-3-g733a5 From 7d1e0da510aa6689997cd2e9ee141aa8711e3369 Mon Sep 17 00:00:00 2001 From: Scott Gerring Date: Mon, 9 Dec 2024 17:46:00 +0100 Subject: chore: use multipart_suggestions for match_same_arms --- clippy_lints/src/matches/match_same_arms.rs | 20 +-- tests/ui/match_same_arms.stderr | 63 +++---- tests/ui/match_same_arms2.fixed | 259 ++++++++++++++++++++++++++++ tests/ui/match_same_arms2.rs | 2 - tests/ui/match_same_arms2.stderr | 141 ++++++--------- 5 files changed, 346 insertions(+), 139 deletions(-) create mode 100644 tests/ui/match_same_arms2.fixed diff --git a/clippy_lints/src/matches/match_same_arms.rs b/clippy_lints/src/matches/match_same_arms.rs index 20984bc40ca..b72a61a4384 100644 --- a/clippy_lints/src/matches/match_same_arms.rs +++ b/clippy_lints/src/matches/match_same_arms.rs @@ -74,8 +74,8 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, arms: &'tcx [Arm<'_>]) { // check if using the same bindings as before HirIdMapEntry::Occupied(entry) => return *entry.get() == b_id, } - // the names technically don't have to match; this makes the lint more conservative - && cx.tcx.hir().name(a_id) == cx.tcx.hir().name(b_id) + // the names technically don't have to match; this makes the lint more conservative + && cx.tcx.hir().name(a_id) == cx.tcx.hir().name(b_id) && cx.typeck_results().expr_ty(a) == cx.typeck_results().expr_ty(b) && pat_contains_local(lhs.pat, a_id) && pat_contains_local(rhs.pat, b_id) @@ -149,16 +149,12 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, arms: &'tcx [Arm<'_>]) { let move_pat_snip = snippet_with_applicability(cx, move_arm.pat.span, "", &mut appl); let keep_pat_snip = snippet_with_applicability(cx, keep_arm.pat.span, "", &mut appl); - diag.span_suggestion( - keep_arm.pat.span, - "or try merging the arm patterns", - format!("{keep_pat_snip} | {move_pat_snip}"), - appl, - ) - .span_suggestion( - adjusted_arm_span(cx, move_arm.span), - "and remove this obsolete arm", - "", + diag.multipart_suggestion( + "or try merging the arm patterns and removing the obsolete arm", + vec![ + (keep_arm.pat.span, format!("{keep_pat_snip} | {move_pat_snip}")), + (adjusted_arm_span(cx, move_arm.span), String::new()), + ], appl, ) .help("try changing either arm body"); diff --git a/tests/ui/match_same_arms.stderr b/tests/ui/match_same_arms.stderr index 3c0382767c3..4a4772da143 100644 --- a/tests/ui/match_same_arms.stderr +++ b/tests/ui/match_same_arms.stderr @@ -20,13 +20,10 @@ LL | (1, .., 3) => 42, | ^^^^^^^^^^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns +help: or try merging the arm patterns and removing the obsolete arm | -LL | (1, .., 3) | (.., 3) => 42, - | ~~~~~~~~~~~~~~~~~~~~ -help: and remove this obsolete arm - | -LL - (.., 3) => 42, +LL ~ (1, .., 3) | (.., 3) => 42, +LL ~ _ => 0, | error: this match arm has an identical body to another arm @@ -36,13 +33,11 @@ LL | 51 => 1, | ^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns - | -LL | 51 | 42 => 1, - | ~~~~~~~ -help: and remove this obsolete arm +help: or try merging the arm patterns and removing the obsolete arm | LL - 42 => 1, +LL - 51 => 1, +LL + 51 | 42 => 1, | error: this match arm has an identical body to another arm @@ -52,13 +47,10 @@ LL | 41 => 2, | ^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns +help: or try merging the arm patterns and removing the obsolete arm | -LL | 41 | 52 => 2, - | ~~~~~~~ -help: and remove this obsolete arm - | -LL - 52 => 2, +LL ~ 41 | 52 => 2, +LL ~ _ => 0, | error: this match arm has an identical body to another arm @@ -68,13 +60,11 @@ LL | 2 => 2, | ^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns - | -LL | 2 | 1 => 2, - | ~~~~~ -help: and remove this obsolete arm +help: or try merging the arm patterns and removing the obsolete arm | LL - 1 => 2, +LL - 2 => 2, +LL + 2 | 1 => 2, | error: this match arm has an identical body to another arm @@ -84,13 +74,11 @@ LL | 3 => 2, | ^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns +help: or try merging the arm patterns and removing the obsolete arm | -LL | 3 | 1 => 2, - | ~~~~~ -help: and remove this obsolete arm - | -LL - 1 => 2, +LL ~ 2 => 2, +LL | +LL ~ 3 | 1 => 2, | error: this match arm has an identical body to another arm @@ -100,14 +88,11 @@ LL | 2 => 2, | ^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns +help: or try merging the arm patterns and removing the obsolete arm | -LL | 2 | 3 => 2, - | ~~~~~ -help: and remove this obsolete arm - | -LL - 3 => 2, -LL + +LL ~ 2 | 3 => 2, +LL | +LL ~ | error: this match arm has an identical body to another arm @@ -117,13 +102,11 @@ LL | CommandInfo::External { name, .. } => name.to_string(), | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns - | -LL | CommandInfo::External { name, .. } | CommandInfo::BuiltIn { name, .. } => name.to_string(), - | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -help: and remove this obsolete arm +help: or try merging the arm patterns and removing the obsolete arm | LL - CommandInfo::BuiltIn { name, .. } => name.to_string(), +LL - CommandInfo::External { name, .. } => name.to_string(), +LL + CommandInfo::External { name, .. } | CommandInfo::BuiltIn { name, .. } => name.to_string(), | error: aborting due to 8 previous errors diff --git a/tests/ui/match_same_arms2.fixed b/tests/ui/match_same_arms2.fixed new file mode 100644 index 00000000000..b7d377f1ebf --- /dev/null +++ b/tests/ui/match_same_arms2.fixed @@ -0,0 +1,259 @@ +#![warn(clippy::match_same_arms)] +#![allow( + clippy::disallowed_names, + clippy::diverging_sub_expression, + clippy::uninlined_format_args, + clippy::match_single_binding, + clippy::match_like_matches_macro +)] + +fn bar(_: T) {} +fn foo() -> bool { + unimplemented!() +} + +fn match_same_arms() { + let _ = match 42 { + _ => { + foo(); + let mut a = 42 + [23].len() as i32; + if true { + a += 7; + } + a = -31 - a; + a + }, + }; + //~^^^^^^^^^^^^^^^^^^^ ERROR: this match arm has an identical body to the `_` wildcard arm + + let _ = match 42 { + 51 | 42 => foo(), //~ ERROR: this match arm has an identical body to another arm + _ => true, + }; + + let _ = match Some(42) { + None | Some(_) => 24, //~ ERROR: this match arm has an identical body to another arm + }; + + let _ = match Some(42) { + Some(foo) => 24, + None => 24, + }; + + let _ = match Some(42) { + Some(42) => 24, + Some(a) => 24, // bindings are different + None => 0, + }; + + let _ = match Some(42) { + Some(a) if a > 0 => 24, + Some(a) => 24, // one arm has a guard + None => 0, + }; + + match (Some(42), Some(42)) { + (None, Some(a)) | (Some(a), None) => bar(a), //~ ERROR: this match arm has an identical body to another arm + _ => (), + } + + // No warning because guards are different + let _ = match Some(42) { + Some(a) if a == 42 => a, + Some(a) if a == 24 => a, + Some(_) => 24, + None => 0, + }; + + let _ = match (Some(42), Some(42)) { + (None, Some(a)) | (Some(a), None) if a == 42 => a, //~ ERROR: this match arm has an identical body to another arm + _ => 0, + }; + + match (Some(42), Some(42)) { + (Some(a), ..) | (.., Some(a)) => bar(a), //~ ERROR: this match arm has an identical body to another arm + _ => (), + } + + let _ = match Some(()) { + Some(()) => 0.0, + None => -0.0, + }; + + match (Some(42), Some("")) { + (Some(a), None) => bar(a), + (None, Some(a)) => bar(a), // bindings have different types + _ => (), + } + + let x: Result = Ok(3); + + // No warning because of the guard. + match x { + Ok(x) if x * x == 64 => println!("ok"), + Ok(_) => println!("ok"), + Err(_) => println!("err"), + } + + // This used to be a false positive; see issue #1996. + match x { + Ok(3) => println!("ok"), + Ok(x) if x * x == 64 => println!("ok 64"), + Ok(_) => println!("ok"), + Err(_) => println!("err"), + } + + match (x, Some(1i32)) { + (Ok(x), Some(_)) | (Ok(_), Some(x)) => println!("ok {}", x), //~ ERROR: this match arm has an identical body to another arm + _ => println!("err"), + } + + // No warning; different types for `x`. + match (x, Some(1.0f64)) { + (Ok(x), Some(_)) => println!("ok {}", x), + (Ok(_), Some(x)) => println!("ok {}", x), + _ => println!("err"), + } + + // False negative #2251. + match x { + Ok(_tmp) => println!("ok"), + Ok(_) | Ok(3) => println!("ok"), //~ ERROR: this match arm has an identical body to another arm + Err(_) => { + unreachable!(); + }, + } + + // False positive #1390 + macro_rules! empty { + ($e:expr) => {}; + } + match 0 { + 0 => { + empty!(0); + }, + 1 => { + empty!(1); + }, + x => { + empty!(x); + }, + }; + + // still lint if the tokens are the same + match 0 { + 1 | 0 => { + empty!(0); + }, + x => { + empty!(x); + }, + } + //~^^^^^^^ ERROR: this match arm has an identical body to another arm + + match_expr_like_matches_macro_priority(); +} + +fn match_expr_like_matches_macro_priority() { + enum E { + A, + B, + C, + } + let x = E::A; + let _ans = match x { + E::A => false, + E::B => false, + _ => true, + }; +} + +fn main() { + let _ = match Some(0) { + Some(0) => 0, + Some(1) => 1, + #[cfg(feature = "foo")] + Some(2) => 2, + _ => 1, + }; + + enum Foo { + X(u32), + Y(u32), + Z(u32), + } + + // Don't lint. `Foo::X(0)` and `Foo::Z(_)` overlap with the arm in between. + let _ = match Foo::X(0) { + Foo::X(0) => 1, + Foo::X(_) | Foo::Y(_) | Foo::Z(0) => 2, + Foo::Z(_) => 1, + _ => 0, + }; + + // Suggest moving `Foo::Z(_)` up. + let _ = match Foo::X(0) { + Foo::X(0) | Foo::Z(_) => 1, //~ ERROR: this match arm has an identical body to another arm + Foo::X(_) | Foo::Y(_) => 2, + _ => 0, + }; + + // Suggest moving `Foo::X(0)` down. + let _ = match Foo::X(0) { + Foo::Y(_) | Foo::Z(0) => 2, + Foo::Z(_) | Foo::X(0) => 1, //~ ERROR: this match arm has an identical body to another arm + _ => 0, + }; + + // Don't lint. + let _ = match 0 { + -2 => 1, + -5..=50 => 2, + -150..=88 => 1, + _ => 3, + }; + + struct Bar { + x: u32, + y: u32, + z: u32, + } + + // Lint. + let _ = match None { + Some(Bar { y: 10, z: 0, .. }) => 2, + None => 50, + Some(Bar { y: 0, x: 5, .. }) | Some(Bar { x: 0, y: 5, .. }) => 1, //~ ERROR: this match arm has an identical body to another arm + _ => 200, + }; + + let _ = match 0 { + 0 => todo!(), + 1 => todo!(), + 2 => core::convert::identity::(todo!()), + 3 => core::convert::identity::(todo!()), + _ => 5, + }; + + let _ = match 0 { + 1 | 0 => cfg!(not_enable), + _ => false, + }; +} + +// issue #8919, fixed on https://github.com/rust-lang/rust/pull/97312 +mod with_lifetime { + enum MaybeStaticStr<'a> { + Static(&'static str), + Borrowed(&'a str), + } + + impl<'a> MaybeStaticStr<'a> { + fn get(&self) -> &'a str { + match *self { + MaybeStaticStr::Borrowed(s) | MaybeStaticStr::Static(s) => s, + //~^ ERROR: this match arm has an identical body to another arm + } + } + } +} diff --git a/tests/ui/match_same_arms2.rs b/tests/ui/match_same_arms2.rs index dedd02e7873..dfd15d10c3d 100644 --- a/tests/ui/match_same_arms2.rs +++ b/tests/ui/match_same_arms2.rs @@ -7,8 +7,6 @@ clippy::match_like_matches_macro )] -//@no-rustfix: need to change the suggestion to a multipart suggestion - fn bar(_: T) {} fn foo() -> bool { unimplemented!() diff --git a/tests/ui/match_same_arms2.stderr b/tests/ui/match_same_arms2.stderr index 3a28b5afc2b..525a25e9287 100644 --- a/tests/ui/match_same_arms2.stderr +++ b/tests/ui/match_same_arms2.stderr @@ -1,5 +1,5 @@ error: this match arm has an identical body to the `_` wildcard arm - --> tests/ui/match_same_arms2.rs:19:9 + --> tests/ui/match_same_arms2.rs:17:9 | LL | / 42 => { LL | | foo(); @@ -12,7 +12,7 @@ LL | | _ => { | = help: or try changing either arm body note: `_` wildcard arm here - --> tests/ui/match_same_arms2.rs:28:9 + --> tests/ui/match_same_arms2.rs:26:9 | LL | / _ => { LL | | foo(); @@ -26,119 +26,103 @@ LL | | }, = help: to override `-D warnings` add `#[allow(clippy::match_same_arms)]` error: this match arm has an identical body to another arm - --> tests/ui/match_same_arms2.rs:42:9 + --> tests/ui/match_same_arms2.rs:40:9 | LL | 51 => foo(), | ^^^^^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns - | -LL | 51 | 42 => foo(), - | ~~~~~~~ -help: and remove this obsolete arm +help: or try merging the arm patterns and removing the obsolete arm | LL - 42 => foo(), +LL - 51 => foo(), +LL + 51 | 42 => foo(), | error: this match arm has an identical body to another arm - --> tests/ui/match_same_arms2.rs:48:9 + --> tests/ui/match_same_arms2.rs:46:9 | LL | None => 24, | ^^^^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns - | -LL | None | Some(_) => 24, - | ~~~~~~~~~~~~~~ -help: and remove this obsolete arm +help: or try merging the arm patterns and removing the obsolete arm | LL - Some(_) => 24, +LL - None => 24, +LL + None | Some(_) => 24, | error: this match arm has an identical body to another arm - --> tests/ui/match_same_arms2.rs:70:9 + --> tests/ui/match_same_arms2.rs:68:9 | LL | (None, Some(a)) => bar(a), | ^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns - | -LL | (None, Some(a)) | (Some(a), None) => bar(a), - | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -help: and remove this obsolete arm +help: or try merging the arm patterns and removing the obsolete arm | LL - (Some(a), None) => bar(a), +LL - (None, Some(a)) => bar(a), +LL + (None, Some(a)) | (Some(a), None) => bar(a), | error: this match arm has an identical body to another arm - --> tests/ui/match_same_arms2.rs:84:9 + --> tests/ui/match_same_arms2.rs:82:9 | LL | (None, Some(a)) if a == 42 => a, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns - | -LL | (None, Some(a)) | (Some(a), None) if a == 42 => a, - | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -help: and remove this obsolete arm +help: or try merging the arm patterns and removing the obsolete arm | LL - (Some(a), None) if a == 42 => a, +LL - (None, Some(a)) if a == 42 => a, +LL + (None, Some(a)) | (Some(a), None) if a == 42 => a, | error: this match arm has an identical body to another arm - --> tests/ui/match_same_arms2.rs:89:9 + --> tests/ui/match_same_arms2.rs:87:9 | LL | (Some(a), ..) => bar(a), | ^^^^^^^^^^^^^^^^^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns +help: or try merging the arm patterns and removing the obsolete arm | -LL | (Some(a), ..) | (.., Some(a)) => bar(a), - | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -help: and remove this obsolete arm - | -LL - (.., Some(a)) => bar(a), +LL ~ (Some(a), ..) | (.., Some(a)) => bar(a), +LL ~ _ => (), | error: this match arm has an identical body to another arm - --> tests/ui/match_same_arms2.rs:123:9 + --> tests/ui/match_same_arms2.rs:121:9 | LL | (Ok(x), Some(_)) => println!("ok {}", x), | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns - | -LL | (Ok(x), Some(_)) | (Ok(_), Some(x)) => println!("ok {}", x), - | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -help: and remove this obsolete arm +help: or try merging the arm patterns and removing the obsolete arm | -LL - (Ok(_), Some(x)) => println!("ok {}", x), +LL ~ (Ok(x), Some(_)) | (Ok(_), Some(x)) => println!("ok {}", x), +LL ~ _ => println!("err"), | error: this match arm has an identical body to another arm - --> tests/ui/match_same_arms2.rs:139:9 + --> tests/ui/match_same_arms2.rs:137:9 | LL | Ok(_) => println!("ok"), | ^^^^^^^^^^^^^^^^^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns - | -LL | Ok(_) | Ok(3) => println!("ok"), - | ~~~~~~~~~~~~~ -help: and remove this obsolete arm +help: or try merging the arm patterns and removing the obsolete arm | LL - Ok(3) => println!("ok"), +LL - Ok(_) => println!("ok"), +LL + Ok(_) | Ok(3) => println!("ok"), | error: this match arm has an identical body to another arm - --> tests/ui/match_same_arms2.rs:166:9 + --> tests/ui/match_same_arms2.rs:164:9 | LL | / 1 => { LL | | empty!(0); @@ -146,95 +130,82 @@ LL | | }, | |_________^ | = help: try changing either arm body -help: or try merging the arm patterns - | -LL | 1 | 0 => { - | ~~~~~ -help: and remove this obsolete arm +help: or try merging the arm patterns and removing the obsolete arm | LL - 0 => { LL - empty!(0); LL - }, +LL - 1 => { +LL + 1 | 0 => { | error: this match arm has an identical body to another arm - --> tests/ui/match_same_arms2.rs:217:9 + --> tests/ui/match_same_arms2.rs:215:9 | LL | Foo::X(0) => 1, | ^^^^^^^^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns - | -LL | Foo::X(0) | Foo::Z(_) => 1, - | ~~~~~~~~~~~~~~~~~~~~~ -help: and remove this obsolete arm +help: or try merging the arm patterns and removing the obsolete arm | -LL - Foo::Z(_) => 1, +LL ~ Foo::X(0) | Foo::Z(_) => 1, +LL | Foo::X(_) | Foo::Y(_) => 2, +LL ~ _ => 0, | error: this match arm has an identical body to another arm - --> tests/ui/match_same_arms2.rs:227:9 + --> tests/ui/match_same_arms2.rs:225:9 | LL | Foo::Z(_) => 1, | ^^^^^^^^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns - | -LL | Foo::Z(_) | Foo::X(0) => 1, - | ~~~~~~~~~~~~~~~~~~~~~ -help: and remove this obsolete arm +help: or try merging the arm patterns and removing the obsolete arm | -LL - Foo::X(0) => 1, +LL ~ Foo::Y(_) | Foo::Z(0) => 2, +LL ~ Foo::Z(_) | Foo::X(0) => 1, | error: this match arm has an identical body to another arm - --> tests/ui/match_same_arms2.rs:250:9 + --> tests/ui/match_same_arms2.rs:248:9 | LL | Some(Bar { y: 0, x: 5, .. }) => 1, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns +help: or try merging the arm patterns and removing the obsolete arm | -LL | Some(Bar { y: 0, x: 5, .. }) | Some(Bar { x: 0, y: 5, .. }) => 1, - | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -help: and remove this obsolete arm - | -LL - Some(Bar { x: 0, y: 5, .. }) => 1, +LL ~ Some(Bar { y: 10, z: 0, .. }) => 2, +LL | None => 50, +LL ~ Some(Bar { y: 0, x: 5, .. }) | Some(Bar { x: 0, y: 5, .. }) => 1, | error: this match arm has an identical body to another arm - --> tests/ui/match_same_arms2.rs:264:9 + --> tests/ui/match_same_arms2.rs:262:9 | LL | 1 => cfg!(not_enable), | ^^^^^^^^^^^^^^^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns - | -LL | 1 | 0 => cfg!(not_enable), - | ~~~~~ -help: and remove this obsolete arm +help: or try merging the arm patterns and removing the obsolete arm | LL - 0 => cfg!(not_enable), +LL - 1 => cfg!(not_enable), +LL + 1 | 0 => cfg!(not_enable), | error: this match arm has an identical body to another arm - --> tests/ui/match_same_arms2.rs:280:17 + --> tests/ui/match_same_arms2.rs:278:17 | LL | MaybeStaticStr::Borrowed(s) => s, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: try changing either arm body -help: or try merging the arm patterns - | -LL | MaybeStaticStr::Borrowed(s) | MaybeStaticStr::Static(s) => s, - | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -help: and remove this obsolete arm +help: or try merging the arm patterns and removing the obsolete arm | LL - MaybeStaticStr::Static(s) => s, +LL - MaybeStaticStr::Borrowed(s) => s, +LL + MaybeStaticStr::Borrowed(s) | MaybeStaticStr::Static(s) => s, | error: aborting due to 14 previous errors -- cgit 1.4.1-3-g733a5 From e767daa45e041e7c9d9f9aaa4cae4081548a7df5 Mon Sep 17 00:00:00 2001 From: Wilfred Hughes Date: Wed, 4 Dec 2024 16:23:26 +0000 Subject: indexing_slicing: Clarify documentation Clarify the relationship between indexing_slicing and out_of_bound_indexing, clarify that this lint is about possible panics based on runtime values, and fix array example to not trigger the out_of_bound_indexing lint. --- clippy_lints/src/indexing_slicing.rs | 27 +++++++++++++++++---------- 1 file changed, 17 insertions(+), 10 deletions(-) diff --git a/clippy_lints/src/indexing_slicing.rs b/clippy_lints/src/indexing_slicing.rs index 15203b35b13..58346f78013 100644 --- a/clippy_lints/src/indexing_slicing.rs +++ b/clippy_lints/src/indexing_slicing.rs @@ -42,12 +42,15 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does - /// Checks for usage of indexing or slicing. Arrays are special cases, this lint - /// does report on arrays if we can tell that slicing operations are in bounds and does not - /// lint on constant `usize` indexing on arrays because that is handled by rustc's `const_err` lint. + /// Checks for usage of indexing or slicing that may panic at runtime. + /// + /// This lint does not report on indexing or slicing operations + /// that always panic, clippy's `out_of_bound_indexing` already + /// handles those cases. /// /// ### Why restrict this? /// To avoid implicit panics from indexing and slicing. + /// /// There are “checked” alternatives which do not panic, and can be used with `unwrap()` to make /// an explicit panic when it is desired. /// @@ -58,27 +61,31 @@ declare_clippy_lint! { /// ### Example /// ```rust,no_run /// // Vector - /// let x = vec![0; 5]; + /// let x = vec![0, 1, 2, 3]; /// /// x[2]; + /// x[100]; /// &x[2..100]; /// /// // Array /// let y = [0, 1, 2, 3]; /// - /// &y[10..100]; - /// &y[10..]; + /// let i = 10; // Could be a runtime value + /// let j = 20; + /// &y[i..j]; /// ``` /// /// Use instead: /// ```no_run - /// # let x = vec![0; 5]; - /// # let y = [0, 1, 2, 3]; + /// # let x = vec![0, 1, 2, 3]; /// x.get(2); + /// x.get(100); /// x.get(2..100); /// - /// y.get(10); - /// y.get(10..100); + /// # let y = [0, 1, 2, 3]; + /// let i = 10; + /// let j = 20; + /// y.get(i..j); /// ``` #[clippy::version = "pre 1.29.0"] pub INDEXING_SLICING, -- cgit 1.4.1-3-g733a5 From 59392bec75e210a27025e576883e7179e3b8c6ae Mon Sep 17 00:00:00 2001 From: Esteban Küber Date: Sat, 24 Aug 2024 17:22:48 +0000 Subject: Introduce `default_field_values` feature Initial implementation of `#[feature(default_field_values]`, proposed in https://github.com/rust-lang/rfcs/pull/3681. Support default fields in enum struct variant Allow default values in an enum struct variant definition: ```rust pub enum Bar { Foo { bar: S = S, baz: i32 = 42 + 3, } } ``` Allow using `..` without a base on an enum struct variant ```rust Bar::Foo { .. } ``` `#[derive(Default)]` doesn't account for these as it is still gating `#[default]` only being allowed on unit variants. Support `#[derive(Default)]` on enum struct variants with all defaulted fields ```rust pub enum Bar { #[default] Foo { bar: S = S, baz: i32 = 42 + 3, } } ``` Check for missing fields in typeck instead of mir_build. Expand test with `const` param case (needs `generic_const_exprs` enabled). Properly instantiate MIR const The following works: ```rust struct S { a: Vec = Vec::new(), } S:: { .. } ``` Add lint for default fields that will always fail const-eval We *allow* this to happen for API writers that might want to rely on users' getting a compile error when using the default field, different to the error that they would get when the field isn't default. We could change this to *always* error instead of being a lint, if we wanted. This will *not* catch errors for partially evaluated consts, like when the expression relies on a const parameter. Suggestions when encountering `Foo { .. }` without `#[feature(default_field_values)]`: - Suggest adding a base expression if there are missing fields. - Suggest enabling the feature if all the missing fields have optional values. - Suggest removing `..` if there are no missing fields. --- clippy_lints/src/default.rs | 4 ++-- clippy_lints/src/default_numeric_fallback.rs | 4 ++-- clippy_lints/src/inconsistent_struct_constructor.rs | 4 ++-- clippy_lints/src/init_numbered_fields.rs | 4 ++-- clippy_lints/src/loops/never_loop.rs | 4 ++-- clippy_lints/src/needless_update.rs | 4 ++-- clippy_lints/src/no_effect.rs | 11 +++++++++-- clippy_lints/src/single_range_in_vec_init.rs | 4 ++-- clippy_lints/src/unnecessary_struct_initialization.rs | 8 ++++---- clippy_lints/src/utils/author.rs | 7 +++++-- clippy_utils/src/higher.rs | 4 ++-- clippy_utils/src/hir_utils.rs | 11 ++++++++--- clippy_utils/src/visitors.rs | 4 ++-- 13 files changed, 44 insertions(+), 29 deletions(-) diff --git a/clippy_lints/src/default.rs b/clippy_lints/src/default.rs index de775b64795..ffdd946aadb 100644 --- a/clippy_lints/src/default.rs +++ b/clippy_lints/src/default.rs @@ -5,7 +5,7 @@ use clippy_utils::{contains_name, get_parent_expr, in_automatically_derived, is_ use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; use rustc_hir::def::Res; -use rustc_hir::{Block, Expr, ExprKind, PatKind, QPath, Stmt, StmtKind}; +use rustc_hir::{Block, Expr, ExprKind, PatKind, QPath, Stmt, StmtKind, StructTailExpr}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_middle::ty::print::with_forced_trimmed_paths; @@ -285,7 +285,7 @@ fn field_reassigned_by_stmt<'tcx>(this: &Stmt<'tcx>, binding_name: Symbol) -> Op /// Returns whether `expr` is the update syntax base: `Foo { a: 1, .. base }` fn is_update_syntax_base<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) -> bool { if let Some(parent) = get_parent_expr(cx, expr) - && let ExprKind::Struct(_, _, Some(base)) = parent.kind + && let ExprKind::Struct(_, _, StructTailExpr::Base(base)) = parent.kind { base.hir_id == expr.hir_id } else { diff --git a/clippy_lints/src/default_numeric_fallback.rs b/clippy_lints/src/default_numeric_fallback.rs index ef6b141920d..6819ad547f8 100644 --- a/clippy_lints/src/default_numeric_fallback.rs +++ b/clippy_lints/src/default_numeric_fallback.rs @@ -4,7 +4,7 @@ use clippy_utils::source::snippet_opt; use rustc_ast::ast::{LitFloatType, LitIntType, LitKind}; use rustc_errors::Applicability; use rustc_hir::intravisit::{Visitor, walk_expr, walk_stmt}; -use rustc_hir::{Block, Body, ConstContext, Expr, ExprKind, FnRetTy, HirId, Lit, Stmt, StmtKind}; +use rustc_hir::{Block, Body, ConstContext, Expr, ExprKind, FnRetTy, HirId, Lit, Stmt, StmtKind, StructTailExpr}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_middle::ty::{self, FloatTy, IntTy, PolyFnSig, Ty}; @@ -197,7 +197,7 @@ impl<'tcx> Visitor<'tcx> for NumericFallbackVisitor<'_, 'tcx> { } // Visit base with no bound. - if let Some(base) = base { + if let StructTailExpr::Base(base) = base { self.ty_bounds.push(ExplicitTyBound(false)); self.visit_expr(base); self.ty_bounds.pop(); diff --git a/clippy_lints/src/inconsistent_struct_constructor.rs b/clippy_lints/src/inconsistent_struct_constructor.rs index d386bfca6ba..4fcd2abb769 100644 --- a/clippy_lints/src/inconsistent_struct_constructor.rs +++ b/clippy_lints/src/inconsistent_struct_constructor.rs @@ -3,7 +3,7 @@ use clippy_utils::fulfill_or_allowed; use clippy_utils::source::snippet; use rustc_data_structures::fx::FxHashMap; use rustc_errors::Applicability; -use rustc_hir::{self as hir, ExprKind}; +use rustc_hir::{self as hir, ExprKind, StructTailExpr}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; use rustc_span::symbol::Symbol; @@ -95,7 +95,7 @@ impl<'tcx> LateLintPass<'tcx> for InconsistentStructConstructor { } fields_snippet.push_str(&last_ident.to_string()); - let base_snippet = if let Some(base) = base { + let base_snippet = if let StructTailExpr::Base(base) = base { format!(", ..{}", snippet(cx, base.span, "..")) } else { String::new() diff --git a/clippy_lints/src/init_numbered_fields.rs b/clippy_lints/src/init_numbered_fields.rs index 7f183bb601e..7a14bbfb9e8 100644 --- a/clippy_lints/src/init_numbered_fields.rs +++ b/clippy_lints/src/init_numbered_fields.rs @@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::{snippet_with_applicability, snippet_with_context}; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; -use rustc_hir::{Expr, ExprKind}; +use rustc_hir::{Expr, ExprKind, StructTailExpr}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; use rustc_span::SyntaxContext; @@ -43,7 +43,7 @@ declare_lint_pass!(NumberedFields => [INIT_NUMBERED_FIELDS]); impl<'tcx> LateLintPass<'tcx> for NumberedFields { fn check_expr(&mut self, cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) { - if let ExprKind::Struct(path, fields @ [field, ..], None) = e.kind + if let ExprKind::Struct(path, fields @ [field, ..], StructTailExpr::None) = e.kind // If the first character of any field is a digit it has to be a tuple. && field.ident.as_str().as_bytes().first().is_some_and(u8::is_ascii_digit) // Type aliases can't be used as functions. diff --git a/clippy_lints/src/loops/never_loop.rs b/clippy_lints/src/loops/never_loop.rs index 1c55e3e22e8..ed9879de13b 100644 --- a/clippy_lints/src/loops/never_loop.rs +++ b/clippy_lints/src/loops/never_loop.rs @@ -5,7 +5,7 @@ use clippy_utils::higher::ForLoop; use clippy_utils::macros::root_macro_call_first_node; use clippy_utils::source::snippet; use rustc_errors::Applicability; -use rustc_hir::{Block, Destination, Expr, ExprKind, HirId, InlineAsmOperand, Pat, Stmt, StmtKind}; +use rustc_hir::{Block, Destination, Expr, ExprKind, HirId, InlineAsmOperand, Pat, Stmt, StmtKind, StructTailExpr}; use rustc_lint::LateContext; use rustc_span::{Span, sym}; use std::iter::once; @@ -164,7 +164,7 @@ fn never_loop_expr<'tcx>( }, ExprKind::Struct(_, fields, base) => { let fields = never_loop_expr_all(cx, fields.iter().map(|f| f.expr), local_labels, main_loop_id); - if let Some(base) = base { + if let StructTailExpr::Base(base) = base { combine_seq(fields, || never_loop_expr(cx, base, local_labels, main_loop_id)) } else { fields diff --git a/clippy_lints/src/needless_update.rs b/clippy_lints/src/needless_update.rs index 6a2893cefbd..0cba72bd2c6 100644 --- a/clippy_lints/src/needless_update.rs +++ b/clippy_lints/src/needless_update.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint; -use rustc_hir::{Expr, ExprKind}; +use rustc_hir::{Expr, ExprKind, StructTailExpr}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::declare_lint_pass; @@ -51,7 +51,7 @@ declare_lint_pass!(NeedlessUpdate => [NEEDLESS_UPDATE]); impl<'tcx> LateLintPass<'tcx> for NeedlessUpdate { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { - if let ExprKind::Struct(_, fields, Some(base)) = expr.kind { + if let ExprKind::Struct(_, fields, StructTailExpr::Base(base)) = expr.kind { let ty = cx.typeck_results().expr_ty(expr); if let ty::Adt(def, _) = ty.kind() { if fields.len() == def.non_enum_variant().fields.len() diff --git a/clippy_lints/src/no_effect.rs b/clippy_lints/src/no_effect.rs index 8ecff9c3f9b..9e44bb02c56 100644 --- a/clippy_lints/src/no_effect.rs +++ b/clippy_lints/src/no_effect.rs @@ -8,7 +8,7 @@ use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; use rustc_hir::{ BinOpKind, BlockCheckMode, Expr, ExprKind, HirId, HirIdMap, ItemKind, LocalSource, Node, PatKind, Stmt, StmtKind, - UnsafeSource, is_range_literal, + UnsafeSource, StructTailExpr, is_range_literal, }; use rustc_infer::infer::TyCtxtInferExt as _; use rustc_lint::{LateContext, LateLintPass, LintContext}; @@ -238,7 +238,10 @@ fn has_no_effect(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { ExprKind::Struct(_, fields, ref base) => { !has_drop(cx, cx.typeck_results().expr_ty(expr)) && fields.iter().all(|field| has_no_effect(cx, field.expr)) - && base.as_ref().is_none_or(|base| has_no_effect(cx, base)) + && match &base { + StructTailExpr::None | StructTailExpr::DefaultFields(_) => true, + StructTailExpr::Base(base) => has_no_effect(cx, base), + } }, ExprKind::Call(callee, args) => { if let ExprKind::Path(ref qpath) = callee.kind { @@ -342,6 +345,10 @@ fn reduce_expression<'a>(cx: &LateContext<'_>, expr: &'a Expr<'a>) -> Option Some(base), + StructTailExpr::None | StructTailExpr::DefaultFields(_) => None, + }; Some(fields.iter().map(|f| &f.expr).chain(base).map(Deref::deref).collect()) } }, diff --git a/clippy_lints/src/single_range_in_vec_init.rs b/clippy_lints/src/single_range_in_vec_init.rs index 44e585953bf..bb11daecc07 100644 --- a/clippy_lints/src/single_range_in_vec_init.rs +++ b/clippy_lints/src/single_range_in_vec_init.rs @@ -6,7 +6,7 @@ use clippy_utils::source::SpanRangeExt; use clippy_utils::ty::implements_trait; use rustc_ast::{LitIntType, LitKind, UintTy}; use rustc_errors::Applicability; -use rustc_hir::{Expr, ExprKind, LangItem, QPath}; +use rustc_hir::{Expr, ExprKind, LangItem, QPath, StructTailExpr}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; use std::fmt::{self, Display, Formatter}; @@ -86,7 +86,7 @@ impl LateLintPass<'_> for SingleRangeInVecInit { return; }; - let ExprKind::Struct(QPath::LangItem(lang_item, ..), [start, end], None) = inner_expr.kind else { + let ExprKind::Struct(QPath::LangItem(lang_item, ..), [start, end], StructTailExpr::None) = inner_expr.kind else { return; }; diff --git a/clippy_lints/src/unnecessary_struct_initialization.rs b/clippy_lints/src/unnecessary_struct_initialization.rs index afdd3505cdd..0a90d31db7e 100644 --- a/clippy_lints/src/unnecessary_struct_initialization.rs +++ b/clippy_lints/src/unnecessary_struct_initialization.rs @@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet; use clippy_utils::ty::is_copy; use clippy_utils::{get_parent_expr, path_to_local}; -use rustc_hir::{BindingMode, Expr, ExprField, ExprKind, Node, PatKind, Path, QPath, UnOp}; +use rustc_hir::{BindingMode, Expr, ExprField, ExprKind, Node, PatKind, Path, QPath, UnOp, StructTailExpr}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; @@ -59,15 +59,15 @@ impl LateLintPass<'_> for UnnecessaryStruct { let field_path = same_path_in_all_fields(cx, expr, fields); let sugg = match (field_path, base) { - (Some(&path), None) => { + (Some(&path), StructTailExpr::None | StructTailExpr::DefaultFields(_)) => { // all fields match, no base given path.span }, - (Some(path), Some(base)) if base_is_suitable(cx, expr, base) && path_matches_base(path, base) => { + (Some(path), StructTailExpr::Base(base)) if base_is_suitable(cx, expr, base) && path_matches_base(path, base) => { // all fields match, has base: ensure that the path of the base matches base.span }, - (None, Some(base)) if fields.is_empty() && base_is_suitable(cx, expr, base) => { + (None, StructTailExpr::Base(base)) if fields.is_empty() && base_is_suitable(cx, expr, base) => { // just the base, no explicit fields base.span }, diff --git a/clippy_lints/src/utils/author.rs b/clippy_lints/src/utils/author.rs index 51001d374b4..311ed427cb9 100644 --- a/clippy_lints/src/utils/author.rs +++ b/clippy_lints/src/utils/author.rs @@ -4,7 +4,7 @@ use rustc_ast::ast::{LitFloatType, LitKind}; use rustc_data_structures::fx::FxHashMap; use rustc_hir::{ self as hir, BindingMode, CaptureBy, Closure, ClosureKind, ConstArg, ConstArgKind, CoroutineKind, - ExprKind, FnRetTy, HirId, Lit, PatKind, QPath, StmtKind, TyKind, + ExprKind, FnRetTy, HirId, Lit, PatKind, QPath, StmtKind, TyKind, StructTailExpr, }; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_session::declare_lint_pass; @@ -598,7 +598,10 @@ impl<'a, 'tcx> PrintVisitor<'a, 'tcx> { }, ExprKind::Struct(qpath, fields, base) => { bind!(self, qpath, fields); - opt_bind!(self, base); + let base = OptionPat::new(match base { + StructTailExpr::Base(base) => Some(self.bind("base", base)), + StructTailExpr::None | StructTailExpr::DefaultFields(_) => None, + }); kind!("Struct({qpath}, {fields}, {base})"); self.qpath(qpath); self.slice(fields, |field| { diff --git a/clippy_utils/src/higher.rs b/clippy_utils/src/higher.rs index 11bbe734844..d216879cbd2 100644 --- a/clippy_utils/src/higher.rs +++ b/clippy_utils/src/higher.rs @@ -8,7 +8,7 @@ use crate::ty::is_type_diagnostic_item; use rustc_ast::ast; use rustc_hir as hir; -use rustc_hir::{Arm, Block, Expr, ExprKind, HirId, LoopSource, MatchSource, Node, Pat, QPath}; +use rustc_hir::{Arm, Block, Expr, ExprKind, StructTailExpr, HirId, LoopSource, MatchSource, Node, Pat, QPath}; use rustc_lint::LateContext; use rustc_span::{Span, sym, symbol}; @@ -236,7 +236,7 @@ impl<'a> Range<'a> { limits: ast::RangeLimits::Closed, }) }, - ExprKind::Struct(path, fields, None) => match (path, fields) { + ExprKind::Struct(path, fields, StructTailExpr::None) => match (path, fields) { (QPath::LangItem(hir::LangItem::RangeFull, ..), []) => Some(Range { start: None, end: None, diff --git a/clippy_utils/src/hir_utils.rs b/clippy_utils/src/hir_utils.rs index 7f3e331e7f6..4be4340862d 100644 --- a/clippy_utils/src/hir_utils.rs +++ b/clippy_utils/src/hir_utils.rs @@ -10,7 +10,7 @@ use rustc_hir::{ AssocItemConstraint, BinOpKind, BindingMode, Block, BodyId, Closure, ConstArg, ConstArgKind, Expr, ExprField, ExprKind, FnRetTy, GenericArg, GenericArgs, HirId, HirIdMap, InlineAsmOperand, LetExpr, Lifetime, LifetimeName, Pat, PatField, PatKind, Path, PathSegment, PrimTy, QPath, Stmt, StmtKind, TraitBoundModifiers, Ty, - TyKind, + TyKind, StructTailExpr, }; use rustc_lexer::{TokenKind, tokenize}; use rustc_lint::LateContext; @@ -380,7 +380,12 @@ impl HirEqInterExpr<'_, '_, '_> { (ExprKind::Ret(l), ExprKind::Ret(r)) => both(l.as_ref(), r.as_ref(), |l, r| self.eq_expr(l, r)), (&ExprKind::Struct(l_path, lf, ref lo), &ExprKind::Struct(r_path, rf, ref ro)) => { self.eq_qpath(l_path, r_path) - && both(lo.as_ref(), ro.as_ref(), |l, r| self.eq_expr(l, r)) + && match (lo, ro) { + (StructTailExpr::Base(l),StructTailExpr::Base(r)) => self.eq_expr(l, r), + (StructTailExpr::None, StructTailExpr::None) => true, + (StructTailExpr::DefaultFields(_), StructTailExpr::DefaultFields(_)) => true, + _ => false, + } && over(lf, rf, |l, r| self.eq_expr_field(l, r)) }, (&ExprKind::Tup(l_tup), &ExprKind::Tup(r_tup)) => self.eq_exprs(l_tup, r_tup), @@ -1017,7 +1022,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { self.hash_expr(f.expr); } - if let Some(e) = *expr { + if let StructTailExpr::Base(e) = *expr { self.hash_expr(e); } }, diff --git a/clippy_utils/src/visitors.rs b/clippy_utils/src/visitors.rs index a79be5ca7d4..351e619d7b1 100644 --- a/clippy_utils/src/visitors.rs +++ b/clippy_utils/src/visitors.rs @@ -7,7 +7,7 @@ use rustc_hir::def::{CtorKind, DefKind, Res}; use rustc_hir::intravisit::{self, Visitor, walk_block, walk_expr}; use rustc_hir::{ AnonConst, Arm, Block, BlockCheckMode, Body, BodyId, Expr, ExprKind, HirId, ItemId, ItemKind, LetExpr, Pat, QPath, - Safety, Stmt, UnOp, UnsafeSource, + Safety, Stmt, UnOp, UnsafeSource, StructTailExpr, }; use rustc_lint::LateContext; use rustc_middle::hir::nested_filter; @@ -663,7 +663,7 @@ pub fn for_each_unconsumed_temporary<'tcx, B>( for field in fields { helper(typeck, true, field.expr, f)?; } - if let Some(default) = default { + if let StructTailExpr::Base(default) = default { helper(typeck, false, default, f)?; } }, -- cgit 1.4.1-3-g733a5 From a8d2960935d86596ba8c5ad0f2aa445f7e0eb6b0 Mon Sep 17 00:00:00 2001 From: Esteban Küber Date: Thu, 5 Dec 2024 21:19:08 +0000 Subject: Keep track of parse errors in `mod`s and don't emit resolve errors for paths involving them When we expand a `mod foo;` and parse `foo.rs`, we now track whether that file had an unrecovered parse error that reached the end of the file. If so, we keep that information around. When resolving a path like `foo::bar`, we do not emit any errors for "`bar` not found in `foo`", as we know that the parse error might have caused `bar` to not be parsed and accounted for. When this happens in an existing project, every path referencing `foo` would be an irrelevant compile error. Instead, we now skip emitting anything until `foo.rs` is fixed. Tellingly enough, we didn't have any test for errors caused by `mod` expansion. Fix #97734. --- clippy_lints/src/duplicate_mod.rs | 2 +- clippy_lints/src/excessive_nesting.rs | 2 +- clippy_utils/src/ast_utils.rs | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/clippy_lints/src/duplicate_mod.rs b/clippy_lints/src/duplicate_mod.rs index ed27e38ef2d..1dac7b971f9 100644 --- a/clippy_lints/src/duplicate_mod.rs +++ b/clippy_lints/src/duplicate_mod.rs @@ -63,7 +63,7 @@ impl_lint_pass!(DuplicateMod => [DUPLICATE_MOD]); impl EarlyLintPass for DuplicateMod { fn check_item(&mut self, cx: &EarlyContext<'_>, item: &Item) { - if let ItemKind::Mod(_, ModKind::Loaded(_, Inline::No, mod_spans)) = &item.kind + if let ItemKind::Mod(_, ModKind::Loaded(_, Inline::No, mod_spans, _)) = &item.kind && let FileName::Real(real) = cx.sess().source_map().span_to_filename(mod_spans.inner_span) && let Some(local_path) = real.into_local_path() && let Ok(absolute_path) = local_path.canonicalize() diff --git a/clippy_lints/src/excessive_nesting.rs b/clippy_lints/src/excessive_nesting.rs index ffc76366983..dfea40db182 100644 --- a/clippy_lints/src/excessive_nesting.rs +++ b/clippy_lints/src/excessive_nesting.rs @@ -163,7 +163,7 @@ impl Visitor<'_> for NestingVisitor<'_, '_> { } match &item.kind { - ItemKind::Trait(_) | ItemKind::Impl(_) | ItemKind::Mod(.., ModKind::Loaded(_, Inline::Yes, _)) => { + ItemKind::Trait(_) | ItemKind::Impl(_) | ItemKind::Mod(.., ModKind::Loaded(_, Inline::Yes, _, _)) => { self.nest_level += 1; if !self.check_indent(item.span, item.id) { diff --git a/clippy_utils/src/ast_utils.rs b/clippy_utils/src/ast_utils.rs index 620a9b56eb5..12074dd16e6 100644 --- a/clippy_utils/src/ast_utils.rs +++ b/clippy_utils/src/ast_utils.rs @@ -379,7 +379,7 @@ pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { (Mod(lu, lmk), Mod(ru, rmk)) => { lu == ru && match (lmk, rmk) { - (ModKind::Loaded(litems, linline, _), ModKind::Loaded(ritems, rinline, _)) => { + (ModKind::Loaded(litems, linline, _, _), ModKind::Loaded(ritems, rinline, _, _)) => { linline == rinline && over(litems, ritems, |l, r| eq_item(l, r, eq_item_kind)) }, (ModKind::Unloaded, ModKind::Unloaded) => true, -- cgit 1.4.1-3-g733a5 From f495cec548de88462818aa405ab37b2b701ef18f Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Tue, 10 Dec 2024 19:50:40 +0000 Subject: Remove more traces of anonymous ADTs --- clippy_lints/src/dereference.rs | 1 - clippy_utils/src/hir_utils.rs | 4 +--- 2 files changed, 1 insertion(+), 4 deletions(-) diff --git a/clippy_lints/src/dereference.rs b/clippy_lints/src/dereference.rs index c449a1a875b..c300f7cd665 100644 --- a/clippy_lints/src/dereference.rs +++ b/clippy_lints/src/dereference.rs @@ -818,7 +818,6 @@ impl TyCoercionStability { | TyKind::Typeof(..) | TyKind::TraitObject(..) | TyKind::InferDelegation(..) - | TyKind::AnonAdt(..) | TyKind::Err(_) => Self::Reborrow, }; } diff --git a/clippy_utils/src/hir_utils.rs b/clippy_utils/src/hir_utils.rs index 4be4340862d..e318ad8671c 100644 --- a/clippy_utils/src/hir_utils.rs +++ b/clippy_utils/src/hir_utils.rs @@ -596,7 +596,6 @@ impl HirEqInterExpr<'_, '_, '_> { (TyKind::Path(l), TyKind::Path(r)) => self.eq_qpath(l, r), (&TyKind::Tup(l), &TyKind::Tup(r)) => over(l, r, |l, r| self.eq_ty(l, r)), (&TyKind::Infer, &TyKind::Infer) => true, - (TyKind::AnonAdt(l_item_id), TyKind::AnonAdt(r_item_id)) => l_item_id == r_item_id, _ => false, } } @@ -1246,8 +1245,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { | TyKind::Infer | TyKind::Never | TyKind::InferDelegation(..) - | TyKind::OpaqueDef(_) - | TyKind::AnonAdt(_) => {}, + | TyKind::OpaqueDef(_) => {}, } } -- cgit 1.4.1-3-g733a5 From 1ace535bc25f64404c5d0435b93fe43e6146f2a7 Mon Sep 17 00:00:00 2001 From: lapla-cogito Date: Wed, 11 Dec 2024 12:38:03 +0900 Subject: suggest modified code for if_not_else lint --- clippy_lints/src/if_not_else.rs | 54 ++++++++++++++++++++++++++++++++++++++--- tests/ui/if_not_else.fixed | 31 +++++++++++++++++++++++ tests/ui/if_not_else.stderr | 20 +++++++++++++-- 3 files changed, 100 insertions(+), 5 deletions(-) create mode 100644 tests/ui/if_not_else.fixed diff --git a/clippy_lints/src/if_not_else.rs b/clippy_lints/src/if_not_else.rs index 120c5396a1c..2806d4d0e5d 100644 --- a/clippy_lints/src/if_not_else.rs +++ b/clippy_lints/src/if_not_else.rs @@ -1,9 +1,13 @@ use clippy_utils::consts::{ConstEvalCtxt, Constant}; -use clippy_utils::diagnostics::span_lint_and_help; +use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_sugg}; use clippy_utils::is_else_clause; +use clippy_utils::source::{HasSession, indent_of, reindent_multiline, snippet}; +use rustc_errors::Applicability; use rustc_hir::{BinOpKind, Expr, ExprKind, UnOp}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; +use rustc_span::Span; +use std::borrow::Cow; declare_clippy_lint! { /// ### What it does @@ -54,7 +58,7 @@ fn is_zero_const(expr: &Expr<'_>, cx: &LateContext<'_>) -> bool { impl LateLintPass<'_> for IfNotElse { fn check_expr(&mut self, cx: &LateContext<'_>, e: &Expr<'_>) { - if let ExprKind::If(cond, _, Some(els)) = e.kind + if let ExprKind::If(cond, cond_inner, Some(els)) = e.kind && let ExprKind::DropTemps(cond) = cond.kind && let ExprKind::Block(..) = els.kind { @@ -79,8 +83,52 @@ impl LateLintPass<'_> for IfNotElse { // } // ``` if !e.span.from_expansion() && !is_else_clause(cx.tcx, e) { - span_lint_and_help(cx, IF_NOT_ELSE, e.span, msg, None, help); + match cond.kind { + ExprKind::Unary(UnOp::Not, _) | ExprKind::Binary(_, _, _) => span_lint_and_sugg( + cx, + IF_NOT_ELSE, + e.span, + msg, + "try", + make_sugg(cx, &cond.kind, cond_inner.span, els.span, "..", Some(e.span)).to_string(), + Applicability::MachineApplicable, + ), + _ => span_lint_and_help(cx, IF_NOT_ELSE, e.span, msg, None, help), + } } } } } + +fn make_sugg<'a>( + sess: &impl HasSession, + cond_kind: &'a ExprKind<'a>, + cond_inner: Span, + els_span: Span, + default: &'a str, + indent_relative_to: Option, +) -> Cow<'a, str> { + let cond_inner_snip = snippet(sess, cond_inner, default); + let els_snip = snippet(sess, els_span, default); + let indent = indent_relative_to.and_then(|s| indent_of(sess, s)); + + let suggestion = match cond_kind { + ExprKind::Unary(UnOp::Not, cond_rest) => { + format!( + "if {} {} else {}", + snippet(sess, cond_rest.span, default), + els_snip, + cond_inner_snip + ) + }, + ExprKind::Binary(_, lhs, rhs) => { + let lhs_snip = snippet(sess, lhs.span, default); + let rhs_snip = snippet(sess, rhs.span, default); + + format!("if {lhs_snip} == {rhs_snip} {els_snip} else {cond_inner_snip}") + }, + _ => String::new(), + }; + + reindent_multiline(suggestion.into(), true, indent) +} diff --git a/tests/ui/if_not_else.fixed b/tests/ui/if_not_else.fixed new file mode 100644 index 00000000000..6c646b0b963 --- /dev/null +++ b/tests/ui/if_not_else.fixed @@ -0,0 +1,31 @@ +#![warn(clippy::all)] +#![warn(clippy::if_not_else)] + +fn foo() -> bool { + unimplemented!() +} +fn bla() -> bool { + unimplemented!() +} + +fn main() { + if bla() { + println!("Bunny"); + } else { + //~^ ERROR: unnecessary boolean `not` operation + println!("Bugs"); + } + if 4 == 5 { + println!("Bunny"); + } else { + //~^ ERROR: unnecessary `!=` operation + println!("Bugs"); + } + if !foo() { + println!("Foo"); + } else if !bla() { + println!("Bugs"); + } else { + println!("Bunny"); + } +} diff --git a/tests/ui/if_not_else.stderr b/tests/ui/if_not_else.stderr index 92fed7b1bf7..01d6767004d 100644 --- a/tests/ui/if_not_else.stderr +++ b/tests/ui/if_not_else.stderr @@ -9,9 +9,17 @@ LL | | println!("Bunny"); LL | | } | |_____^ | - = help: remove the `!` and swap the blocks of the `if`/`else` = note: `-D clippy::if-not-else` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::if_not_else)]` +help: try + | +LL ~ if bla() { +LL + println!("Bunny"); +LL + } else { +LL + +LL + println!("Bugs"); +LL + } + | error: unnecessary `!=` operation --> tests/ui/if_not_else.rs:18:5 @@ -24,7 +32,15 @@ LL | | println!("Bunny"); LL | | } | |_____^ | - = help: change to `==` and swap the blocks of the `if`/`else` +help: try + | +LL ~ if 4 == 5 { +LL + println!("Bunny"); +LL + } else { +LL + +LL + println!("Bugs"); +LL + } + | error: aborting due to 2 previous errors -- cgit 1.4.1-3-g733a5 From f865ada9db91f6d2cd9d11f26f347ef4099219a7 Mon Sep 17 00:00:00 2001 From: Oli Scherer Date: Tue, 10 Dec 2024 10:12:36 +0000 Subject: Require the `constness` query to only be invoked on things that can have constness --- clippy_lints/src/manual_float_methods.rs | 43 +++++++++++++++++++++++++++++++- 1 file changed, 42 insertions(+), 1 deletion(-) diff --git a/clippy_lints/src/manual_float_methods.rs b/clippy_lints/src/manual_float_methods.rs index b12f575e81a..0e08e2eb83d 100644 --- a/clippy_lints/src/manual_float_methods.rs +++ b/clippy_lints/src/manual_float_methods.rs @@ -6,8 +6,11 @@ use clippy_utils::source::SpanRangeExt; use clippy_utils::{is_from_proc_macro, path_to_local}; use rustc_errors::Applicability; use rustc_hir::{BinOpKind, Constness, Expr, ExprKind}; +use rustc_hir::def::DefKind; +use rustc_hir::def_id::DefId; use rustc_lint::{LateContext, LateLintPass, Lint, LintContext}; use rustc_middle::lint::in_external_macro; +use rustc_middle::ty::TyCtxt; use rustc_session::impl_lint_pass; declare_clippy_lint! { @@ -94,6 +97,44 @@ impl ManualFloatMethods { } } +fn is_not_const(tcx: TyCtxt<'_>, def_id: DefId) -> bool { + match tcx.def_kind(def_id) { + DefKind::Mod + | DefKind::Struct + | DefKind::Union + | DefKind::Enum + | DefKind::Variant + | DefKind::Trait + | DefKind::TyAlias + | DefKind::ForeignTy + | DefKind::TraitAlias + | DefKind::AssocTy + | DefKind::Macro(..) + | DefKind::Field + | DefKind::LifetimeParam + | DefKind::ExternCrate + | DefKind::Use + | DefKind::ForeignMod + | DefKind::GlobalAsm + | DefKind::Impl { .. } + | DefKind::OpaqueTy + | DefKind::SyntheticCoroutineBody + | DefKind::TyParam => true, + + DefKind::AnonConst + | DefKind::InlineConst + | DefKind::Const + | DefKind::ConstParam + | DefKind::Static { .. } + | DefKind::Ctor(..) + | DefKind::AssocConst => false, + + DefKind::Fn + | DefKind::AssocFn + | DefKind::Closure => tcx.constness(def_id) == Constness::NotConst, + } +} + impl<'tcx> LateLintPass<'tcx> for ManualFloatMethods { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { if let ExprKind::Binary(kind, lhs, rhs) = expr.kind @@ -105,7 +146,7 @@ impl<'tcx> LateLintPass<'tcx> for ManualFloatMethods { && exprs.iter_mut().partition_in_place(|i| path_to_local(i).is_some()) == 2 && !in_external_macro(cx.sess(), expr.span) && ( - matches!(cx.tcx.constness(cx.tcx.hir().enclosing_body_owner(expr.hir_id)), Constness::NotConst) + is_not_const(cx.tcx, cx.tcx.hir().enclosing_body_owner(expr.hir_id).into()) || self.msrv.meets(msrvs::CONST_FLOAT_CLASSIFY) ) && let [first, second, const_1, const_2] = exprs -- cgit 1.4.1-3-g733a5 From b8cd51313e0113835c68b2b312f78e9104336f99 Mon Sep 17 00:00:00 2001 From: Eric Date: Wed, 13 Nov 2024 19:39:08 -0800 Subject: allow needless_option_take to report for more cases In general, needless_option_take should report whenever take() is called on a temporary value, not just when the temporary value is created by as_ref() --- clippy_lints/src/methods/needless_option_take.rs | 55 ++++++++++-------- tests/ui/needless_option_take.fixed | 13 ----- tests/ui/needless_option_take.rs | 47 +++++++++++++++- tests/ui/needless_option_take.stderr | 71 +++++++++++++++++++++++- 4 files changed, 146 insertions(+), 40 deletions(-) delete mode 100644 tests/ui/needless_option_take.fixed diff --git a/clippy_lints/src/methods/needless_option_take.rs b/clippy_lints/src/methods/needless_option_take.rs index 829c118d291..c41ce2481d7 100644 --- a/clippy_lints/src/methods/needless_option_take.rs +++ b/clippy_lints/src/methods/needless_option_take.rs @@ -1,9 +1,6 @@ -use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::match_def_path; -use clippy_utils::source::snippet_with_applicability; +use clippy_utils::diagnostics::span_lint_and_note; use clippy_utils::ty::is_type_diagnostic_item; -use rustc_errors::Applicability; -use rustc_hir::Expr; +use rustc_hir::{Expr, ExprKind, QPath}; use rustc_lint::LateContext; use rustc_span::sym; @@ -11,20 +8,17 @@ use super::NEEDLESS_OPTION_TAKE; pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, recv: &'tcx Expr<'_>) { // Checks if expression type is equal to sym::Option and if the expr is not a syntactic place - if !recv.is_syntactic_place_expr() && is_expr_option(cx, recv) && has_expr_as_ref_path(cx, recv) { - let mut applicability = Applicability::MachineApplicable; - span_lint_and_sugg( - cx, - NEEDLESS_OPTION_TAKE, - expr.span, - "called `Option::take()` on a temporary value", - "try", - format!( - "{}", - snippet_with_applicability(cx, recv.span, "..", &mut applicability) - ), - applicability, - ); + if !recv.is_syntactic_place_expr() && is_expr_option(cx, recv) { + if let Some(function_name) = source_of_temporary_value(recv) { + span_lint_and_note( + cx, + NEEDLESS_OPTION_TAKE, + expr.span, + "called `Option::take()` on a temporary value", + None, + format!("`{function_name}` creates a temporary value, so calling take() has no effect"), + ); + } } } @@ -33,9 +27,24 @@ fn is_expr_option(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { is_type_diagnostic_item(cx, expr_type, sym::Option) } -fn has_expr_as_ref_path(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { - if let Some(ref_id) = cx.typeck_results().type_dependent_def_id(expr.hir_id) { - return match_def_path(cx, ref_id, &["core", "option", "Option", "as_ref"]); +/// Returns the string of the function call that creates the temporary. +/// When this function is called, we are reasonably certain that the `ExprKind` is either +/// `Call` or `MethodCall` because we already checked that the expression is not +/// `is_syntactic_place_expr()`. +fn source_of_temporary_value<'a>(expr: &'a Expr<'_>) -> Option<&'a str> { + match expr.peel_borrows().kind { + ExprKind::Call(function, _) => { + if let ExprKind::Path(QPath::Resolved(_, func_path)) = function.kind { + if !func_path.segments.is_empty() { + return Some(func_path.segments[0].ident.name.as_str()); + } + } + if let ExprKind::Path(QPath::TypeRelative(_, func_path_segment)) = function.kind { + return Some(func_path_segment.ident.name.as_str()); + } + None + }, + ExprKind::MethodCall(path_segment, ..) => Some(path_segment.ident.name.as_str()), + _ => None, } - false } diff --git a/tests/ui/needless_option_take.fixed b/tests/ui/needless_option_take.fixed deleted file mode 100644 index d732a2686cb..00000000000 --- a/tests/ui/needless_option_take.fixed +++ /dev/null @@ -1,13 +0,0 @@ -fn main() { - println!("Testing non erroneous option_take_on_temporary"); - let mut option = Some(1); - let _ = Box::new(move || option.take().unwrap()); - - println!("Testing non erroneous option_take_on_temporary"); - let x = Some(3); - x.as_ref(); - - println!("Testing erroneous option_take_on_temporary"); - let x = Some(3); - x.as_ref(); -} diff --git a/tests/ui/needless_option_take.rs b/tests/ui/needless_option_take.rs index f947d874e06..c6807718a75 100644 --- a/tests/ui/needless_option_take.rs +++ b/tests/ui/needless_option_take.rs @@ -1,3 +1,15 @@ +struct MyStruct; + +impl MyStruct { + pub fn get_option() -> Option { + todo!() + } +} + +fn return_option() -> Option { + todo!() +} + fn main() { println!("Testing non erroneous option_take_on_temporary"); let mut option = Some(1); @@ -7,7 +19,40 @@ fn main() { let x = Some(3); x.as_ref(); - println!("Testing erroneous option_take_on_temporary"); let x = Some(3); x.as_ref().take(); + //~^ ERROR: called `Option::take()` on a temporary value + + println!("Testing non erroneous option_take_on_temporary"); + let mut x = Some(3); + let y = x.as_mut(); + + let mut x = Some(3); + let y = x.as_mut().take(); + //~^ ERROR: called `Option::take()` on a temporary value + let y = x.replace(289).take(); + //~^ ERROR: called `Option::take()` on a temporary value + + let y = Some(3).as_mut().take(); + //~^ ERROR: called `Option::take()` on a temporary value + + let y = Option::as_mut(&mut x).take(); + //~^ ERROR: called `Option::take()` on a temporary value + + let x = return_option(); + let x = return_option().take(); + //~^ ERROR: called `Option::take()` on a temporary value + + let x = MyStruct::get_option(); + let x = MyStruct::get_option().take(); + //~^ ERROR: called `Option::take()` on a temporary value + + let mut my_vec = vec![1, 2, 3]; + my_vec.push(4); + let y = my_vec.first(); + let y = my_vec.first().take(); + //~^ ERROR: called `Option::take()` on a temporary value + + let y = my_vec.first().take(); + //~^ ERROR: called `Option::take()` on a temporary value } diff --git a/tests/ui/needless_option_take.stderr b/tests/ui/needless_option_take.stderr index 4a73ccb86d0..e036bd53170 100644 --- a/tests/ui/needless_option_take.stderr +++ b/tests/ui/needless_option_take.stderr @@ -1,11 +1,76 @@ error: called `Option::take()` on a temporary value - --> tests/ui/needless_option_take.rs:12:5 + --> tests/ui/needless_option_take.rs:23:5 | LL | x.as_ref().take(); - | ^^^^^^^^^^^^^^^^^ help: try: `x.as_ref()` + | ^^^^^^^^^^^^^^^^^ | + = note: `as_ref` creates a temporary value, so calling take() has no effect = note: `-D clippy::needless-option-take` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::needless_option_take)]` -error: aborting due to 1 previous error +error: called `Option::take()` on a temporary value + --> tests/ui/needless_option_take.rs:31:13 + | +LL | let y = x.as_mut().take(); + | ^^^^^^^^^^^^^^^^^ + | + = note: `as_mut` creates a temporary value, so calling take() has no effect + +error: called `Option::take()` on a temporary value + --> tests/ui/needless_option_take.rs:33:13 + | +LL | let y = x.replace(289).take(); + | ^^^^^^^^^^^^^^^^^^^^^ + | + = note: `replace` creates a temporary value, so calling take() has no effect + +error: called `Option::take()` on a temporary value + --> tests/ui/needless_option_take.rs:36:13 + | +LL | let y = Some(3).as_mut().take(); + | ^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `as_mut` creates a temporary value, so calling take() has no effect + +error: called `Option::take()` on a temporary value + --> tests/ui/needless_option_take.rs:39:13 + | +LL | let y = Option::as_mut(&mut x).take(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `as_mut` creates a temporary value, so calling take() has no effect + +error: called `Option::take()` on a temporary value + --> tests/ui/needless_option_take.rs:43:13 + | +LL | let x = return_option().take(); + | ^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `return_option` creates a temporary value, so calling take() has no effect + +error: called `Option::take()` on a temporary value + --> tests/ui/needless_option_take.rs:47:13 + | +LL | let x = MyStruct::get_option().take(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `get_option` creates a temporary value, so calling take() has no effect + +error: called `Option::take()` on a temporary value + --> tests/ui/needless_option_take.rs:53:13 + | +LL | let y = my_vec.first().take(); + | ^^^^^^^^^^^^^^^^^^^^^ + | + = note: `first` creates a temporary value, so calling take() has no effect + +error: called `Option::take()` on a temporary value + --> tests/ui/needless_option_take.rs:56:13 + | +LL | let y = my_vec.first().take(); + | ^^^^^^^^^^^^^^^^^^^^^ + | + = note: `first` creates a temporary value, so calling take() has no effect + +error: aborting due to 9 previous errors -- cgit 1.4.1-3-g733a5 From 35f4b924bc54b0b4fd50847e09ea319337d3db41 Mon Sep 17 00:00:00 2001 From: lapla-cogito Date: Thu, 12 Dec 2024 20:59:53 +0900 Subject: fix version attribute for arbitrary_source_item_ordering lint --- clippy_lints/src/arbitrary_source_item_ordering.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/clippy_lints/src/arbitrary_source_item_ordering.rs b/clippy_lints/src/arbitrary_source_item_ordering.rs index 8719f61a890..cf33e1444e4 100644 --- a/clippy_lints/src/arbitrary_source_item_ordering.rs +++ b/clippy_lints/src/arbitrary_source_item_ordering.rs @@ -126,7 +126,7 @@ declare_clippy_lint! { /// /// [cargo-pgo]: https://github.com/Kobzol/cargo-pgo/blob/main/README.md /// - #[clippy::version = "1.82.0"] + #[clippy::version = "1.84.0"] pub ARBITRARY_SOURCE_ITEM_ORDERING, restriction, "arbitrary source item ordering" -- cgit 1.4.1-3-g733a5 From db35e308c2b92ed13369ea53ad54625abcf4422c Mon Sep 17 00:00:00 2001 From: klensy Date: Thu, 12 Dec 2024 16:42:17 +0300 Subject: fix typo --- clippy_lints/src/operators/numeric_arithmetic.rs | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/clippy_lints/src/operators/numeric_arithmetic.rs b/clippy_lints/src/operators/numeric_arithmetic.rs index d369978b8be..2083f2bf628 100644 --- a/clippy_lints/src/operators/numeric_arithmetic.rs +++ b/clippy_lints/src/operators/numeric_arithmetic.rs @@ -43,8 +43,8 @@ impl Context { _ => (), } - let (_, r_ty) = (cx.typeck_results().expr_ty(l), cx.typeck_results().expr_ty(r)); - if r_ty.peel_refs().is_floating_point() && r_ty.peel_refs().is_floating_point() { + let (l_ty, r_ty) = (cx.typeck_results().expr_ty(l), cx.typeck_results().expr_ty(r)); + if l_ty.peel_refs().is_floating_point() && r_ty.peel_refs().is_floating_point() { span_lint(cx, FLOAT_ARITHMETIC, expr.span, "floating-point arithmetic detected"); self.expr_id = Some(expr.hir_id); } -- cgit 1.4.1-3-g733a5 From 87af9d0a0a34486ef902c017408502d97bd36b78 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Tue, 10 Dec 2024 19:41:48 +0000 Subject: Fix tools --- clippy_lints/src/dereference.rs | 1 + clippy_lints/src/loops/never_loop.rs | 3 ++- clippy_lints/src/utils/author.rs | 3 +++ clippy_utils/src/eager_or_lazy.rs | 3 ++- clippy_utils/src/hir_utils.rs | 15 +++++++++++++++ clippy_utils/src/sugg.rs | 6 ++++-- clippy_utils/src/visitors.rs | 1 + 7 files changed, 28 insertions(+), 4 deletions(-) diff --git a/clippy_lints/src/dereference.rs b/clippy_lints/src/dereference.rs index c300f7cd665..bd4ce7ab922 100644 --- a/clippy_lints/src/dereference.rs +++ b/clippy_lints/src/dereference.rs @@ -819,6 +819,7 @@ impl TyCoercionStability { | TyKind::TraitObject(..) | TyKind::InferDelegation(..) | TyKind::Err(_) => Self::Reborrow, + TyKind::UnsafeBinder(..) => Self::None, }; } } diff --git a/clippy_lints/src/loops/never_loop.rs b/clippy_lints/src/loops/never_loop.rs index ed9879de13b..b679fdfadc3 100644 --- a/clippy_lints/src/loops/never_loop.rs +++ b/clippy_lints/src/loops/never_loop.rs @@ -156,7 +156,8 @@ fn never_loop_expr<'tcx>( | ExprKind::Field(e, _) | ExprKind::AddrOf(_, _, e) | ExprKind::Repeat(e, _) - | ExprKind::DropTemps(e) => never_loop_expr(cx, e, local_labels, main_loop_id), + | ExprKind::DropTemps(e) + | ExprKind::UnsafeBinderCast(_, e, _) => never_loop_expr(cx, e, local_labels, main_loop_id), ExprKind::Let(let_expr) => never_loop_expr(cx, let_expr.init, local_labels, main_loop_id), ExprKind::Array(es) | ExprKind::Tup(es) => never_loop_expr_all(cx, es.iter(), local_labels, main_loop_id), ExprKind::MethodCall(_, receiver, es, _) => { diff --git a/clippy_lints/src/utils/author.rs b/clippy_lints/src/utils/author.rs index 311ed427cb9..521bf6a5fed 100644 --- a/clippy_lints/src/utils/author.rs +++ b/clippy_lints/src/utils/author.rs @@ -623,6 +623,9 @@ impl<'a, 'tcx> PrintVisitor<'a, 'tcx> { kind!("DropTemps({expr})"); self.expr(expr); }, + ExprKind::UnsafeBinderCast(..) => { + unimplemented!("unsafe binders are not implemented yet"); + } } } diff --git a/clippy_utils/src/eager_or_lazy.rs b/clippy_utils/src/eager_or_lazy.rs index 7f0363ac942..b5bb174e737 100644 --- a/clippy_utils/src/eager_or_lazy.rs +++ b/clippy_utils/src/eager_or_lazy.rs @@ -303,7 +303,8 @@ fn expr_eagerness<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> EagernessS | ExprKind::AddrOf(..) | ExprKind::Repeat(..) | ExprKind::Block(Block { stmts: [], .. }, _) - | ExprKind::OffsetOf(..) => (), + | ExprKind::OffsetOf(..) + | ExprKind::UnsafeBinderCast(..) => (), // Assignment might be to a local defined earlier, so don't eagerly evaluate. // Blocks with multiple statements might be expensive, so don't eagerly evaluate. diff --git a/clippy_utils/src/hir_utils.rs b/clippy_utils/src/hir_utils.rs index e318ad8671c..279025b9bf9 100644 --- a/clippy_utils/src/hir_utils.rs +++ b/clippy_utils/src/hir_utils.rs @@ -370,6 +370,10 @@ impl HirEqInterExpr<'_, '_, '_> { && self.eq_expr(l_receiver, r_receiver) && self.eq_exprs(l_args, r_args) }, + (&ExprKind::UnsafeBinderCast(lkind, le, None), &ExprKind::UnsafeBinderCast(rkind, re, None)) => + lkind == rkind && self.eq_expr(le, re), + (&ExprKind::UnsafeBinderCast(lkind, le, Some(lt)), &ExprKind::UnsafeBinderCast(rkind, re, Some(rt))) => + lkind == rkind && self.eq_expr(le, re) && self.eq_ty(lt, rt), (&ExprKind::OffsetOf(l_container, l_fields), &ExprKind::OffsetOf(r_container, r_fields)) => { self.eq_ty(l_container, r_container) && over(l_fields, r_fields, |l, r| l.name == r.name) }, @@ -424,6 +428,7 @@ impl HirEqInterExpr<'_, '_, '_> { | &ExprKind::Type(..) | &ExprKind::Unary(..) | &ExprKind::Yield(..) + | &ExprKind::UnsafeBinderCast(..) // --- Special cases that do not have a positive branch. @@ -1032,6 +1037,13 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { std::mem::discriminant(&lop).hash(&mut self.s); self.hash_expr(le); }, + ExprKind::UnsafeBinderCast(kind, expr, ty) => { + std::mem::discriminant(&kind).hash(&mut self.s); + self.hash_expr(expr); + if let Some(ty) = ty { + self.hash_ty(ty); + } + } ExprKind::Err(_) => {}, } } @@ -1241,6 +1253,9 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { TyKind::Typeof(anon_const) => { self.hash_body(anon_const.body); }, + TyKind::UnsafeBinder(binder) => { + self.hash_ty(binder.inner_ty); + } TyKind::Err(_) | TyKind::Infer | TyKind::Never diff --git a/clippy_utils/src/sugg.rs b/clippy_utils/src/sugg.rs index 25ebe879192..088abd7c479 100644 --- a/clippy_utils/src/sugg.rs +++ b/clippy_utils/src/sugg.rs @@ -151,7 +151,8 @@ impl<'a> Sugg<'a> { | ExprKind::Become(..) | ExprKind::Struct(..) | ExprKind::Tup(..) - | ExprKind::Err(_) => Sugg::NonParen(get_snippet(expr.span)), + | ExprKind::Err(_) + | ExprKind::UnsafeBinderCast(..) => Sugg::NonParen(get_snippet(expr.span)), ExprKind::DropTemps(inner) => Self::hir_from_snippet(inner, get_snippet), ExprKind::Assign(lhs, rhs, _) => { Sugg::BinOp(AssocOp::Assign, get_snippet(lhs.span), get_snippet(rhs.span)) @@ -226,7 +227,8 @@ impl<'a> Sugg<'a> { | ast::ExprKind::While(..) | ast::ExprKind::Await(..) | ast::ExprKind::Err(_) - | ast::ExprKind::Dummy => Sugg::NonParen(snippet(expr.span)), + | ast::ExprKind::Dummy + | ast::ExprKind::UnsafeBinderCast(..) => Sugg::NonParen(snippet(expr.span)), ast::ExprKind::Range(ref lhs, ref rhs, RangeLimits::HalfOpen) => Sugg::BinOp( AssocOp::DotDot, lhs.as_ref().map_or("".into(), |lhs| snippet(lhs.span)), diff --git a/clippy_utils/src/visitors.rs b/clippy_utils/src/visitors.rs index 351e619d7b1..ff58c6358ba 100644 --- a/clippy_utils/src/visitors.rs +++ b/clippy_utils/src/visitors.rs @@ -694,6 +694,7 @@ pub fn for_each_unconsumed_temporary<'tcx, B>( | ExprKind::Continue(_) | ExprKind::InlineAsm(_) | ExprKind::OffsetOf(..) + | ExprKind::UnsafeBinderCast(..) | ExprKind::Err(_) => (), } ControlFlow::Continue(()) -- cgit 1.4.1-3-g733a5 From f4db5f7bab133fc2951e1de5d2c0d259c62222ad Mon Sep 17 00:00:00 2001 From: Esteban Küber Date: Wed, 11 Dec 2024 21:17:33 +0000 Subject: Tweak multispan rendering Consider comments and bare delimiters the same as an "empty line" for purposes of hiding rendered code output of long multispans. This results in more aggressive shortening of rendered output without losing too much context, specially in `*.stderr` tests that have "hidden" comments. --- .../excessive_nesting/excessive_nesting.stderr | 3 +- tests/ui/async_yields_async.stderr | 1 - .../branches_sharing_code/shared_at_bottom.stderr | 6 ++-- tests/ui/collapsible_else_if.stderr | 5 --- tests/ui/crashes/ice-360.stderr | 6 ---- tests/ui/crate_level_checks/no_std_swap.stderr | 3 +- tests/ui/doc/unbalanced_ticks.stderr | 4 +-- tests/ui/empty_line_after/doc_comments.stderr | 5 +-- tests/ui/empty_line_after/outer_attribute.stderr | 3 +- tests/ui/enum_variants.stderr | 2 -- tests/ui/infinite_loops.stderr | 7 ++--- tests/ui/manual_find_fixable.stderr | 36 ++++++++-------------- tests/ui/map_flatten_fixable.stderr | 3 -- tests/ui/match_bool.stderr | 3 -- tests/ui/match_expr_like_matches_macro.stderr | 3 +- tests/ui/missing_doc_crate_missing.stderr | 4 +-- tests/ui/needless_doc_main.stderr | 14 +++------ tests/ui/needless_if.stderr | 1 - tests/ui/never_loop.stderr | 3 -- tests/ui/option_if_let_else.stderr | 3 +- tests/ui/question_mark.stderr | 3 +- tests/ui/significant_drop_tightening.stderr | 3 +- tests/ui/single_match.stderr | 5 +-- tests/ui/suspicious_doc_comments_unfixable.stderr | 9 ++---- tests/ui/temporary_assignment.stderr | 3 +- tests/ui/too_long_first_doc_paragraph-fix.stderr | 4 +-- tests/ui/too_long_first_doc_paragraph.stderr | 7 ++--- tests/ui/unnecessary_lazy_eval.stderr | 3 -- tests/ui/vec_init_then_push.stderr | 3 +- 29 files changed, 38 insertions(+), 117 deletions(-) diff --git a/tests/ui-toml/excessive_nesting/excessive_nesting.stderr b/tests/ui-toml/excessive_nesting/excessive_nesting.stderr index ccdaecdd481..9cf6fc66757 100644 --- a/tests/ui-toml/excessive_nesting/excessive_nesting.stderr +++ b/tests/ui-toml/excessive_nesting/excessive_nesting.stderr @@ -66,8 +66,7 @@ error: this block is too nested LL | if true { | _________________________^ LL | | if true { -LL | | -LL | | } +... | LL | | } | |_________________^ | diff --git a/tests/ui/async_yields_async.stderr b/tests/ui/async_yields_async.stderr index 861c3f2ce4a..54baa69a035 100644 --- a/tests/ui/async_yields_async.stderr +++ b/tests/ui/async_yields_async.stderr @@ -80,7 +80,6 @@ error: an async construct yields a type which is itself awaitable LL | let _m = async || { | _______________________- LL | | println!("I'm bored"); -LL | | // Some more stuff ... | LL | | CustomFutureType | | ^^^^^^^^^^^^^^^^ diff --git a/tests/ui/branches_sharing_code/shared_at_bottom.stderr b/tests/ui/branches_sharing_code/shared_at_bottom.stderr index 68ebb6ad781..36b17773973 100644 --- a/tests/ui/branches_sharing_code/shared_at_bottom.stderr +++ b/tests/ui/branches_sharing_code/shared_at_bottom.stderr @@ -115,8 +115,7 @@ error: all if blocks contain the same code at the end --> tests/ui/branches_sharing_code/shared_at_bottom.rs:183:5 | LL | / x << 2 -LL | | -LL | | +... | LL | | }; | |_____^ | @@ -131,8 +130,7 @@ error: all if blocks contain the same code at the end --> tests/ui/branches_sharing_code/shared_at_bottom.rs:192:5 | LL | / x * 4 -LL | | -LL | | +... | LL | | } | |_____^ | diff --git a/tests/ui/collapsible_else_if.stderr b/tests/ui/collapsible_else_if.stderr index 395c2dcf68d..c27a2967f3c 100644 --- a/tests/ui/collapsible_else_if.stderr +++ b/tests/ui/collapsible_else_if.stderr @@ -43,7 +43,6 @@ LL | } else { | ____________^ LL | | if y == "world" { LL | | println!("world") -LL | | } ... | LL | | } LL | | } @@ -66,7 +65,6 @@ LL | } else { | ____________^ LL | | if let Some(42) = Some(42) { LL | | println!("world") -LL | | } ... | LL | | } LL | | } @@ -89,7 +87,6 @@ LL | } else { | ____________^ LL | | if let Some(42) = Some(42) { LL | | println!("world") -LL | | } ... | LL | | } LL | | } @@ -112,7 +109,6 @@ LL | } else { | ____________^ LL | | if x == "hello" { LL | | println!("world") -LL | | } ... | LL | | } LL | | } @@ -135,7 +131,6 @@ LL | } else { | ____________^ LL | | if let Some(42) = Some(42) { LL | | println!("world") -LL | | } ... | LL | | } LL | | } diff --git a/tests/ui/crashes/ice-360.stderr b/tests/ui/crashes/ice-360.stderr index 50b245c65cd..d37e0216edf 100644 --- a/tests/ui/crashes/ice-360.stderr +++ b/tests/ui/crashes/ice-360.stderr @@ -2,9 +2,6 @@ error: this loop never actually loops --> tests/ui/crashes/ice-360.rs:5:5 | LL | / loop { -LL | | -LL | | -LL | | ... | LL | | LL | | } @@ -16,9 +13,6 @@ error: this loop could be written as a `while let` loop --> tests/ui/crashes/ice-360.rs:5:5 | LL | / loop { -LL | | -LL | | -LL | | ... | LL | | LL | | } diff --git a/tests/ui/crate_level_checks/no_std_swap.stderr b/tests/ui/crate_level_checks/no_std_swap.stderr index 7d7922ae8ca..bcc8684f7c2 100644 --- a/tests/ui/crate_level_checks/no_std_swap.stderr +++ b/tests/ui/crate_level_checks/no_std_swap.stderr @@ -2,8 +2,7 @@ error: this looks like you are trying to swap `a` and `b` --> tests/ui/crate_level_checks/no_std_swap.rs:12:5 | LL | / a = b; -LL | | -LL | | +... | LL | | b = a; | |_________^ help: try: `core::mem::swap(&mut a, &mut b)` | diff --git a/tests/ui/doc/unbalanced_ticks.stderr b/tests/ui/doc/unbalanced_ticks.stderr index 50324010e97..3bcf65c4595 100644 --- a/tests/ui/doc/unbalanced_ticks.stderr +++ b/tests/ui/doc/unbalanced_ticks.stderr @@ -3,9 +3,7 @@ error: backticks are unbalanced | LL | /// This is a doc comment with `unbalanced_tick marks and several words that | _____^ -LL | | -LL | | /// should be `encompassed_by` tick marks because they `contain_underscores`. -LL | | /// Because of the initial `unbalanced_tick` pair, the error message is +... | LL | | /// very `confusing_and_misleading`. | |____________________________________^ | diff --git a/tests/ui/empty_line_after/doc_comments.stderr b/tests/ui/empty_line_after/doc_comments.stderr index 2852e26680f..475a817eff9 100644 --- a/tests/ui/empty_line_after/doc_comments.stderr +++ b/tests/ui/empty_line_after/doc_comments.stderr @@ -96,10 +96,7 @@ error: empty lines after doc comment --> tests/ui/empty_line_after/doc_comments.rs:63:5 | LL | / /// for OldA -LL | | // struct OldA; -LL | | -LL | | /// Docs -LL | | /// for OldB +... | LL | | // struct OldB; LL | | | |_^ diff --git a/tests/ui/empty_line_after/outer_attribute.stderr b/tests/ui/empty_line_after/outer_attribute.stderr index 75fc23e9e7e..a95306e2fa3 100644 --- a/tests/ui/empty_line_after/outer_attribute.stderr +++ b/tests/ui/empty_line_after/outer_attribute.stderr @@ -103,8 +103,7 @@ error: empty lines after outer attribute --> tests/ui/empty_line_after/outer_attribute.rs:64:1 | LL | / #[allow(unused)] -LL | | -LL | | // This comment is isolated +... | LL | | | |_^ LL | pub fn isolated_comment() {} diff --git a/tests/ui/enum_variants.stderr b/tests/ui/enum_variants.stderr index aaac3cbb82d..c118ac80a92 100644 --- a/tests/ui/enum_variants.stderr +++ b/tests/ui/enum_variants.stderr @@ -13,7 +13,6 @@ error: all variants have the same prefix: `c` LL | / enum Foo { LL | | LL | | cFoo, -LL | | ... | LL | | cBaz, LL | | } @@ -45,7 +44,6 @@ error: all variants have the same prefix: `Food` LL | / enum Food { LL | | LL | | FoodGood, -LL | | ... | LL | | LL | | } diff --git a/tests/ui/infinite_loops.stderr b/tests/ui/infinite_loops.stderr index 3a3ed7d0fe8..5b5cd78108e 100644 --- a/tests/ui/infinite_loops.stderr +++ b/tests/ui/infinite_loops.stderr @@ -20,7 +20,6 @@ error: infinite loop detected LL | / loop { LL | | LL | | loop { -LL | | ... | LL | | do_something(); LL | | } @@ -37,8 +36,7 @@ error: infinite loop detected LL | / loop { LL | | LL | | loop { -LL | | -LL | | do_something(); +... | LL | | } LL | | } | |_________^ @@ -79,8 +77,7 @@ error: infinite loop detected LL | / loop { LL | | fn inner_fn() -> ! { LL | | std::process::exit(0); -LL | | } -LL | | do_something(); +... | LL | | } | |_____^ | diff --git a/tests/ui/manual_find_fixable.stderr b/tests/ui/manual_find_fixable.stderr index c3f48fb9f98..5ed8be1b3ee 100644 --- a/tests/ui/manual_find_fixable.stderr +++ b/tests/ui/manual_find_fixable.stderr @@ -4,8 +4,7 @@ error: manual implementation of `Iterator::find` LL | / for &v in ARRAY { LL | | if v == n { LL | | return Some(v); -LL | | } -LL | | } +... | LL | | None | |________^ help: replace with an iterator: `ARRAY.iter().find(|&&v| v == n).copied()` | @@ -18,8 +17,7 @@ error: manual implementation of `Iterator::find` LL | / for (a, _) in arr { LL | | if a % 2 == 0 { LL | | return Some(a); -LL | | } -LL | | } +... | LL | | None | |________^ help: replace with an iterator: `arr.into_iter().map(|(a, _)| a).find(|&a| a % 2 == 0)` @@ -29,8 +27,7 @@ error: manual implementation of `Iterator::find` LL | / for el in arr { LL | | if el.name.len() == 10 { LL | | return Some(el); -LL | | } -LL | | } +... | LL | | None | |________^ help: replace with an iterator: `arr.into_iter().find(|el| el.name.len() == 10)` | @@ -42,8 +39,7 @@ error: manual implementation of `Iterator::find` LL | / for Tuple(a, _) in arr { LL | | if a >= 3 { LL | | return Some(a); -LL | | } -LL | | } +... | LL | | None | |________^ help: replace with an iterator: `arr.into_iter().map(|Tuple(a, _)| a).find(|&a| a >= 3)` @@ -53,8 +49,7 @@ error: manual implementation of `Iterator::find` LL | / for el in arr { LL | | if el.should_keep() { LL | | return Some(el); -LL | | } -LL | | } +... | LL | | None | |________^ help: replace with an iterator: `arr.into_iter().find(|el| el.should_keep())` | @@ -66,8 +61,7 @@ error: manual implementation of `Iterator::find` LL | / for el in arr { LL | | if f(el) == 20 { LL | | return Some(el); -LL | | } -LL | | } +... | LL | | None | |________^ help: replace with an iterator: `arr.into_iter().find(|&el| f(el) == 20)` @@ -77,8 +71,7 @@ error: manual implementation of `Iterator::find` LL | / for &el in arr.values() { LL | | if f(el) { LL | | return Some(el); -LL | | } -LL | | } +... | LL | | None | |________^ help: replace with an iterator: `arr.values().find(|&&el| f(el)).copied()` @@ -88,8 +81,7 @@ error: manual implementation of `Iterator::find` LL | / for el in arr { LL | | if el.is_true { LL | | return Some(el); -LL | | } -LL | | } +... | LL | | None | |________^ help: replace with an iterator: `arr.into_iter().find(|el| el.is_true)` | @@ -101,8 +93,7 @@ error: manual implementation of `Iterator::find` LL | / for (_, &x) in v { LL | | if x > 10 { LL | | return Some(x); -LL | | } -LL | | } +... | LL | | None | |________^ help: replace with an iterator: `v.into_iter().map(|(_, &x)| x).find(|&x| x > 10)` @@ -112,8 +103,7 @@ error: manual implementation of `Iterator::find` LL | / for &(_, &x) in v { LL | | if x > 10 { LL | | return Some(x); -LL | | } -LL | | } +... | LL | | None | |________^ help: replace with an iterator: `v.iter().map(|&(_, &x)| x).find(|&x| x > 10)` @@ -123,8 +113,7 @@ error: manual implementation of `Iterator::find` LL | / for x in arr { LL | | if x >= 5 { LL | | return Some(x); -LL | | } -LL | | } +... | LL | | return None; | |________________^ help: replace with an iterator: `arr.into_iter().find(|&x| x >= 5)` @@ -134,8 +123,7 @@ error: manual implementation of `Iterator::find` LL | / for x in arr { LL | | if x < 1 { LL | | return Some(x); -LL | | } -LL | | } +... | LL | | None | |____________^ help: replace with an iterator: `arr.into_iter().find(|&x| x < 1)` diff --git a/tests/ui/map_flatten_fixable.stderr b/tests/ui/map_flatten_fixable.stderr index 128c95146aa..095bee52d6d 100644 --- a/tests/ui/map_flatten_fixable.stderr +++ b/tests/ui/map_flatten_fixable.stderr @@ -77,9 +77,6 @@ error: called `map(..).flatten()` on `Option` | LL | .map(|_| { | __________^ -LL | | // we need some newlines -LL | | // so that the span is big enough -LL | | // for a split output of the diagnostic ... | LL | | }) LL | | .flatten(); diff --git a/tests/ui/match_bool.stderr b/tests/ui/match_bool.stderr index 1303e082daf..fb24e67ecee 100644 --- a/tests/ui/match_bool.stderr +++ b/tests/ui/match_bool.stderr @@ -75,9 +75,6 @@ error: you seem to be trying to match on a boolean expression --> tests/ui/match_bool.rs:36:5 | LL | / match test && test { -LL | | -LL | | -LL | | ... | LL | | _ => (), LL | | }; diff --git a/tests/ui/match_expr_like_matches_macro.stderr b/tests/ui/match_expr_like_matches_macro.stderr index 201b977e558..ffe5772ece9 100644 --- a/tests/ui/match_expr_like_matches_macro.stderr +++ b/tests/ui/match_expr_like_matches_macro.stderr @@ -68,8 +68,7 @@ LL | let _ans = match x { | ____________________^ LL | | E::A(_) => { LL | | true -LL | | } -LL | | E::B(_) => true, +... | LL | | _ => false, LL | | }; | |_________^ help: try: `matches!(x, E::A(_) | E::B(_))` diff --git a/tests/ui/missing_doc_crate_missing.stderr b/tests/ui/missing_doc_crate_missing.stderr index a421fb986d3..d6a4342c503 100644 --- a/tests/ui/missing_doc_crate_missing.stderr +++ b/tests/ui/missing_doc_crate_missing.stderr @@ -2,9 +2,7 @@ error: missing documentation for the crate --> tests/ui/missing_doc_crate_missing.rs:1:1 | LL | / #![warn(clippy::missing_docs_in_private_items)] -LL | | -LL | | -LL | | +... | LL | | fn main() {} | |____________^ | diff --git a/tests/ui/needless_doc_main.stderr b/tests/ui/needless_doc_main.stderr index 7e362cf377c..cfb389801db 100644 --- a/tests/ui/needless_doc_main.stderr +++ b/tests/ui/needless_doc_main.stderr @@ -3,9 +3,7 @@ error: needless `fn main` in doctest | LL | /// fn main() { | _____^ -LL | | -LL | | -LL | | /// unimplemented!(); +... | LL | | /// } | |_____^ | @@ -17,8 +15,7 @@ error: needless `fn main` in doctest | LL | /// fn main() -> () { | _____^ -LL | | -LL | | /// unimplemented!(); +... | LL | | /// } | |_____^ @@ -27,8 +24,7 @@ error: needless `fn main` in doctest | LL | /// fn main() { | _____^ -LL | | -LL | | /// unimplemented!(); +... | LL | | /// } | |_____^ @@ -37,9 +33,7 @@ error: needless `fn main` in doctest | LL | /// // the fn is not always the first line | _____^ -LL | | -LL | | /// fn main() { -LL | | /// unimplemented!(); +... | LL | | /// } | |_____^ diff --git a/tests/ui/needless_if.stderr b/tests/ui/needless_if.stderr index 9beae596ee3..cbfeb979d2f 100644 --- a/tests/ui/needless_if.stderr +++ b/tests/ui/needless_if.stderr @@ -34,7 +34,6 @@ error: this `if` branch is empty LL | / if { LL | | if let true = true LL | | && true -LL | | { ... | LL | | } && true LL | | {} diff --git a/tests/ui/never_loop.stderr b/tests/ui/never_loop.stderr index 440a2b5aaba..bd9bdc4addb 100644 --- a/tests/ui/never_loop.stderr +++ b/tests/ui/never_loop.stderr @@ -2,9 +2,6 @@ error: this loop never actually loops --> tests/ui/never_loop.rs:12:5 | LL | / loop { -LL | | -LL | | -LL | | // clippy::never_loop ... | LL | | break; LL | | } diff --git a/tests/ui/option_if_let_else.stderr b/tests/ui/option_if_let_else.stderr index 37ef791edb0..32ff2276323 100644 --- a/tests/ui/option_if_let_else.stderr +++ b/tests/ui/option_if_let_else.stderr @@ -115,8 +115,7 @@ LL | let _ = if let Some(x) = arg { | _____________^ LL | | x LL | | } else { -LL | | // map_or_else must be suggested -LL | | side_effect() +... | LL | | }; | |_____^ help: try: `arg.map_or_else(side_effect, |x| x)` diff --git a/tests/ui/question_mark.stderr b/tests/ui/question_mark.stderr index 0a48c4e80cb..06a8bd0de34 100644 --- a/tests/ui/question_mark.stderr +++ b/tests/ui/question_mark.stderr @@ -183,8 +183,7 @@ error: this block may be rewritten with the `?` operator | LL | / if a.is_none() { LL | | return None; -LL | | // do lint here, the outer `try` is not relevant here -LL | | // https://github.com/rust-lang/rust-clippy/pull/11001#issuecomment-1610636867 +... | LL | | } | |_____________^ help: replace it with: `a?;` diff --git a/tests/ui/significant_drop_tightening.stderr b/tests/ui/significant_drop_tightening.stderr index 2d7da4f394d..7d7e3ac7d0a 100644 --- a/tests/ui/significant_drop_tightening.stderr +++ b/tests/ui/significant_drop_tightening.stderr @@ -5,8 +5,7 @@ LL | pub fn complex_return_triggers_the_lint() -> i32 { | __________________________________________________- LL | | fn foo() -> i32 { LL | | 1 -LL | | } -LL | | let mutex = Mutex::new(1); +... | LL | | let lock = mutex.lock().unwrap(); | | ^^^^ ... | diff --git a/tests/ui/single_match.stderr b/tests/ui/single_match.stderr index 9240b09c50a..dd03737279a 100644 --- a/tests/ui/single_match.stderr +++ b/tests/ui/single_match.stderr @@ -22,10 +22,7 @@ error: you seem to be trying to use `match` for destructuring a single pattern. --> tests/ui/single_match.rs:23:5 | LL | / match x { -LL | | // Note the missing block braces. -LL | | // We suggest `if let Some(y) = x { .. }` because the macro -LL | | // is expanded before we can do anything. -LL | | Some(y) => println!("{:?}", y), +... | LL | | _ => (), LL | | } | |_____^ help: try: `if let Some(y) = x { println!("{:?}", y) }` diff --git a/tests/ui/suspicious_doc_comments_unfixable.stderr b/tests/ui/suspicious_doc_comments_unfixable.stderr index d15f16f7c50..2209a63d2c0 100644 --- a/tests/ui/suspicious_doc_comments_unfixable.stderr +++ b/tests/ui/suspicious_doc_comments_unfixable.stderr @@ -2,10 +2,7 @@ error: this is an outer doc comment and does not apply to the parent module or c --> tests/ui/suspicious_doc_comments_unfixable.rs:4:1 | LL | / ///! a -LL | | -LL | | -LL | | ///! b -LL | | /// c +... | LL | | ///! d | |______^ | @@ -25,9 +22,7 @@ error: this is an outer doc comment and does not apply to the parent module or c --> tests/ui/suspicious_doc_comments_unfixable.rs:12:1 | LL | / ///! a -LL | | -LL | | ///! b -LL | | /// c +... | LL | | ///! d | |______^ | diff --git a/tests/ui/temporary_assignment.stderr b/tests/ui/temporary_assignment.stderr index 8c284594075..7e6529cb213 100644 --- a/tests/ui/temporary_assignment.stderr +++ b/tests/ui/temporary_assignment.stderr @@ -13,8 +13,7 @@ error: assignment to temporary LL | / MultiStruct { LL | | LL | | structure: Struct { field: 0 }, -LL | | } -LL | | .structure +... | LL | | .field = 1; | |______________^ diff --git a/tests/ui/too_long_first_doc_paragraph-fix.stderr b/tests/ui/too_long_first_doc_paragraph-fix.stderr index 6ef333f0cfd..5925d2f902a 100644 --- a/tests/ui/too_long_first_doc_paragraph-fix.stderr +++ b/tests/ui/too_long_first_doc_paragraph-fix.stderr @@ -2,9 +2,7 @@ error: first doc comment paragraph is too long --> tests/ui/too_long_first_doc_paragraph-fix.rs:3:1 | LL | / /// A very short summary. -LL | | /// A much longer explanation that goes into a lot more detail about -LL | | /// how the thing works, possibly with doclinks and so one, -LL | | /// and probably spanning a many rows. Blablabla, it needs to be over +... | LL | | /// 200 characters so I needed to write something longeeeeeeer. | |_^ | diff --git a/tests/ui/too_long_first_doc_paragraph.stderr b/tests/ui/too_long_first_doc_paragraph.stderr index 95f42349b9b..c40ee2fcb48 100644 --- a/tests/ui/too_long_first_doc_paragraph.stderr +++ b/tests/ui/too_long_first_doc_paragraph.stderr @@ -2,9 +2,7 @@ error: first doc comment paragraph is too long --> tests/ui/too_long_first_doc_paragraph.rs:8:5 | LL | / //! A very short summary. -LL | | //! A much longer explanation that goes into a lot more detail about -LL | | //! how the thing works, possibly with doclinks and so one, -LL | | //! and probably spanning a many rows. Blablabla, it needs to be over +... | LL | | //! 200 characters so I needed to write something longeeeeeeer. | |____^ | @@ -29,8 +27,7 @@ error: first doc comment paragraph is too long --> tests/ui/too_long_first_doc_paragraph.rs:36:1 | LL | / /// Lorem -LL | | /// ipsum dolor sit amet, consectetur adipiscing elit. Nunc turpis nunc, lacinia -LL | | /// a dolor in, pellentesque aliquet enim. Cras nec maximus sem. Mauris arcu libero, +... | LL | | /// gravida non lacinia at, rhoncus eu lacus. | |_^ diff --git a/tests/ui/unnecessary_lazy_eval.stderr b/tests/ui/unnecessary_lazy_eval.stderr index bcdf65b217e..27c064b8b7f 100644 --- a/tests/ui/unnecessary_lazy_eval.stderr +++ b/tests/ui/unnecessary_lazy_eval.stderr @@ -434,9 +434,6 @@ error: unnecessary closure used to substitute value for `Result::Err` | LL | let _: Result = res. | ___________________________________^ -LL | | // some lines -LL | | // some lines -LL | | // some lines ... | LL | | // some lines LL | | or_else(|_| Ok(ext_str.some_field)); diff --git a/tests/ui/vec_init_then_push.stderr b/tests/ui/vec_init_then_push.stderr index 58720c9a181..f35625c9b08 100644 --- a/tests/ui/vec_init_then_push.stderr +++ b/tests/ui/vec_init_then_push.stderr @@ -2,8 +2,7 @@ error: calls to `push` immediately after creation --> tests/ui/vec_init_then_push.rs:5:5 | LL | / let mut def_err: Vec = Default::default(); -LL | | -LL | | +... | LL | | def_err.push(0); | |____________________^ help: consider using the `vec![]` macro: `let def_err: Vec = vec![..];` | -- cgit 1.4.1-3-g733a5 From cc9d9ccd11e9de89c2c48259f080b35eff902fe7 Mon Sep 17 00:00:00 2001 From: Esteban Küber Date: Wed, 11 Dec 2024 21:48:33 +0000 Subject: Filter empty lines, comments and delimiters from previous to last multiline span rendering --- .../arbitrary_source_item_ordering/ordering_mixed.default.stderr | 2 -- .../undocumented_unsafe_blocks.default.stderr | 1 - .../undocumented_unsafe_blocks.disabled.stderr | 1 - tests/ui/bind_instead_of_map_multipart.stderr | 1 - tests/ui/collapsible_else_if.stderr | 5 ----- tests/ui/copy_iterator.stderr | 1 - tests/ui/crashes/ice-360.stderr | 2 -- tests/ui/derivable_impls.stderr | 1 - tests/ui/empty_line_after/doc_comments.stderr | 1 - tests/ui/entry.stderr | 5 +---- tests/ui/enum_variants.stderr | 1 - tests/ui/fallible_impl_from.stderr | 3 --- tests/ui/if_same_then_else2.stderr | 2 -- tests/ui/infinite_loops.stderr | 6 ------ tests/ui/into_iter_without_iter.stderr | 8 +------- tests/ui/manual_find.stderr | 2 -- tests/ui/manual_flatten.stderr | 1 - tests/ui/manual_let_else.stderr | 4 ---- tests/ui/manual_unwrap_or.stderr | 2 -- tests/ui/missing_doc.stderr | 1 - tests/ui/missing_fields_in_debug.stderr | 3 --- tests/ui/needless_for_each_unfixable.stderr | 1 - tests/ui/never_loop.stderr | 2 -- tests/ui/single_match_else.stderr | 6 ++---- tests/ui/unit_cmp.stderr | 4 ---- tests/ui/unnecessary_lazy_eval.stderr | 1 - tests/ui/unnecessary_wraps.stderr | 3 --- tests/ui/unwrap_in_result.stderr | 1 - tests/ui/while_let_loop.stderr | 2 -- 29 files changed, 4 insertions(+), 69 deletions(-) diff --git a/tests/ui-toml/arbitrary_source_item_ordering/ordering_mixed.default.stderr b/tests/ui-toml/arbitrary_source_item_ordering/ordering_mixed.default.stderr index 062bf25ea62..ee2868869de 100644 --- a/tests/ui-toml/arbitrary_source_item_ordering/ordering_mixed.default.stderr +++ b/tests/ui-toml/arbitrary_source_item_ordering/ordering_mixed.default.stderr @@ -20,7 +20,6 @@ LL | | fn clone_self(&self) -> Self { LL | | Self { LL | | a: true, ... | -LL | | } LL | | } | |_^ | @@ -32,7 +31,6 @@ LL | | fn default() -> Self { LL | | Self { LL | | a: true, ... | -LL | | } LL | | } | |_^ diff --git a/tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.default.stderr b/tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.default.stderr index a44c810b135..9677beeb2c2 100644 --- a/tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.default.stderr +++ b/tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.default.stderr @@ -286,7 +286,6 @@ LL | | if unsafe { true } { LL | | todo!(); LL | | } else { ... | -LL | | } LL | | }; | |______^ | diff --git a/tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.disabled.stderr b/tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.disabled.stderr index db5ea5b6289..0eccdd42800 100644 --- a/tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.disabled.stderr +++ b/tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.disabled.stderr @@ -294,7 +294,6 @@ LL | | if unsafe { true } { LL | | todo!(); LL | | } else { ... | -LL | | } LL | | }; | |______^ | diff --git a/tests/ui/bind_instead_of_map_multipart.stderr b/tests/ui/bind_instead_of_map_multipart.stderr index 2adaecc96d6..d271381adea 100644 --- a/tests/ui/bind_instead_of_map_multipart.stderr +++ b/tests/ui/bind_instead_of_map_multipart.stderr @@ -44,7 +44,6 @@ LL | | if { LL | | if s == "43" { LL | | return Some(43); ... | -LL | | } LL | | }); | |______^ | diff --git a/tests/ui/collapsible_else_if.stderr b/tests/ui/collapsible_else_if.stderr index c27a2967f3c..45566a78bd8 100644 --- a/tests/ui/collapsible_else_if.stderr +++ b/tests/ui/collapsible_else_if.stderr @@ -44,7 +44,6 @@ LL | } else { LL | | if y == "world" { LL | | println!("world") ... | -LL | | } LL | | } | |_____^ | @@ -66,7 +65,6 @@ LL | } else { LL | | if let Some(42) = Some(42) { LL | | println!("world") ... | -LL | | } LL | | } | |_____^ | @@ -88,7 +86,6 @@ LL | } else { LL | | if let Some(42) = Some(42) { LL | | println!("world") ... | -LL | | } LL | | } | |_____^ | @@ -110,7 +107,6 @@ LL | } else { LL | | if x == "hello" { LL | | println!("world") ... | -LL | | } LL | | } | |_____^ | @@ -132,7 +128,6 @@ LL | } else { LL | | if let Some(42) = Some(42) { LL | | println!("world") ... | -LL | | } LL | | } | |_____^ | diff --git a/tests/ui/copy_iterator.stderr b/tests/ui/copy_iterator.stderr index 990b1ce628d..2f6378a85fe 100644 --- a/tests/ui/copy_iterator.stderr +++ b/tests/ui/copy_iterator.stderr @@ -6,7 +6,6 @@ LL | | LL | | LL | | type Item = u8; ... | -LL | | } LL | | } | |_^ | diff --git a/tests/ui/crashes/ice-360.stderr b/tests/ui/crashes/ice-360.stderr index d37e0216edf..9961eb21485 100644 --- a/tests/ui/crashes/ice-360.stderr +++ b/tests/ui/crashes/ice-360.stderr @@ -3,7 +3,6 @@ error: this loop never actually loops | LL | / loop { ... | -LL | | LL | | } | |_____^ | @@ -14,7 +13,6 @@ error: this loop could be written as a `while let` loop | LL | / loop { ... | -LL | | LL | | } | |_____^ help: try: `while let Some(ele) = iter.next() { .. }` | diff --git a/tests/ui/derivable_impls.stderr b/tests/ui/derivable_impls.stderr index c22569145bd..0caea892358 100644 --- a/tests/ui/derivable_impls.stderr +++ b/tests/ui/derivable_impls.stderr @@ -6,7 +6,6 @@ LL | | fn default() -> Self { LL | | Self { LL | | a: false, ... | -LL | | } LL | | } | |_^ | diff --git a/tests/ui/empty_line_after/doc_comments.stderr b/tests/ui/empty_line_after/doc_comments.stderr index 475a817eff9..c4d4dde7f73 100644 --- a/tests/ui/empty_line_after/doc_comments.stderr +++ b/tests/ui/empty_line_after/doc_comments.stderr @@ -97,7 +97,6 @@ error: empty lines after doc comment | LL | / /// for OldA ... | -LL | | // struct OldB; LL | | | |_^ ... diff --git a/tests/ui/entry.stderr b/tests/ui/entry.stderr index fb467676606..4b6bd3b4a25 100644 --- a/tests/ui/entry.stderr +++ b/tests/ui/entry.stderr @@ -16,8 +16,7 @@ LL | / if !m.contains_key(&k) { LL | | if true { LL | | m.insert(k, v); LL | | } else { -LL | | m.insert(k, v2); -LL | | } +... | LL | | } | |_____^ | @@ -63,7 +62,6 @@ LL | | if true { LL | | m.insert(k, v); LL | | } else { ... | -LL | | } LL | | } | |_____^ | @@ -154,7 +152,6 @@ LL | | foo(); LL | | match 0 { LL | | 0 if false => { ... | -LL | | } LL | | } | |_____^ | diff --git a/tests/ui/enum_variants.stderr b/tests/ui/enum_variants.stderr index c118ac80a92..ecca6c833ac 100644 --- a/tests/ui/enum_variants.stderr +++ b/tests/ui/enum_variants.stderr @@ -45,7 +45,6 @@ LL | / enum Food { LL | | LL | | FoodGood, ... | -LL | | LL | | } | |_^ | diff --git a/tests/ui/fallible_impl_from.stderr b/tests/ui/fallible_impl_from.stderr index 62496148924..cc3739031b7 100644 --- a/tests/ui/fallible_impl_from.stderr +++ b/tests/ui/fallible_impl_from.stderr @@ -29,7 +29,6 @@ LL | | LL | | fn from(i: usize) -> Invalid { LL | | if i != 42 { ... | -LL | | } LL | | } | |_^ | @@ -49,7 +48,6 @@ LL | | LL | | fn from(s: Option) -> Invalid { LL | | let s = s.unwrap(); ... | -LL | | } LL | | } | |_^ | @@ -76,7 +74,6 @@ LL | | LL | | fn from(s: &'a mut as ProjStrTrait>::ProjString) -> Invalid { LL | | if s.parse::().ok().unwrap() != 42 { ... | -LL | | } LL | | } | |_^ | diff --git a/tests/ui/if_same_then_else2.stderr b/tests/ui/if_same_then_else2.stderr index 93507eb2c6f..369d6f66737 100644 --- a/tests/ui/if_same_then_else2.stderr +++ b/tests/ui/if_same_then_else2.stderr @@ -7,7 +7,6 @@ LL | | for _ in &[42] { LL | | let foo: &Option<_> = &Some::(42); LL | | if foo.is_some() { ... | -LL | | } LL | | } else { | |_____^ | @@ -20,7 +19,6 @@ LL | | for _ in &[42] { LL | | let bar: &Option<_> = &Some::(42); LL | | if bar.is_some() { ... | -LL | | } LL | | } | |_____^ = note: `-D clippy::if-same-then-else` implied by `-D warnings` diff --git a/tests/ui/infinite_loops.stderr b/tests/ui/infinite_loops.stderr index 5b5cd78108e..ac7b25323d2 100644 --- a/tests/ui/infinite_loops.stderr +++ b/tests/ui/infinite_loops.stderr @@ -37,7 +37,6 @@ LL | / loop { LL | | LL | | loop { ... | -LL | | } LL | | } | |_________^ | @@ -94,7 +93,6 @@ LL | | LL | | loop { LL | | if cond { ... | -LL | | } LL | | } | |_____^ | @@ -111,7 +109,6 @@ LL | | LL | | 'inner: loop { LL | | loop { ... | -LL | | } LL | | } | |_____^ | @@ -142,7 +139,6 @@ LL | | LL | | 'inner: loop { LL | | loop { ... | -LL | | } LL | | } | |_________^ | @@ -159,7 +155,6 @@ LL | | LL | | match opt { LL | | Some(v) => { ... | -LL | | } LL | | } | |_____^ | @@ -276,7 +271,6 @@ LL | | LL | | 'inner: loop { LL | | loop { ... | -LL | | } LL | | } | |_____^ | diff --git a/tests/ui/into_iter_without_iter.stderr b/tests/ui/into_iter_without_iter.stderr index 533a7f68593..cde1b60c2ab 100644 --- a/tests/ui/into_iter_without_iter.stderr +++ b/tests/ui/into_iter_without_iter.stderr @@ -6,7 +6,6 @@ LL | | LL | | type IntoIter = std::slice::Iter<'a, u8>; LL | | type Item = &'a u8; ... | -LL | | } LL | | } | |_^ | @@ -30,7 +29,6 @@ LL | | LL | | type IntoIter = std::slice::IterMut<'a, u8>; LL | | type Item = &'a mut u8; ... | -LL | | } LL | | } | |_^ | @@ -52,7 +50,6 @@ LL | | LL | | type IntoIter = std::slice::Iter<'a, T>; LL | | type Item = &'a T; ... | -LL | | } LL | | } | |_^ | @@ -74,7 +71,6 @@ LL | | LL | | type IntoIter = std::slice::IterMut<'a, T>; LL | | type Item = &'a mut T; ... | -LL | | } LL | | } | |_^ | @@ -96,7 +92,6 @@ LL | | LL | | type IntoIter = std::slice::IterMut<'a, T>; LL | | type Item = &'a mut T; ... | -LL | | } LL | | } | |_^ | @@ -117,8 +112,7 @@ LL | / impl<'a> IntoIterator for &'a Issue12037 { LL | | type IntoIter = std::slice::Iter<'a, u8>; LL | | type Item = &'a u8; LL | | fn into_iter(self) -> Self::IntoIter { -LL | | todo!() -LL | | } +... | LL | | } | |_________^ ... diff --git a/tests/ui/manual_find.stderr b/tests/ui/manual_find.stderr index eb55a0c11f2..a4e7878a247 100644 --- a/tests/ui/manual_find.stderr +++ b/tests/ui/manual_find.stderr @@ -6,7 +6,6 @@ LL | | LL | | LL | | if s == String::new() { ... | -LL | | } LL | | None | |________^ help: replace with an iterator: `strings.into_iter().find(|s| s == String::new())` | @@ -22,7 +21,6 @@ LL | | LL | | LL | | if s == String::new() { ... | -LL | | } LL | | None | |________^ help: replace with an iterator: `arr.into_iter().map(|(s, _)| s).find(|s| s == String::new())` | diff --git a/tests/ui/manual_flatten.stderr b/tests/ui/manual_flatten.stderr index 3b64d9ef859..cf1b0a1c8bb 100644 --- a/tests/ui/manual_flatten.stderr +++ b/tests/ui/manual_flatten.stderr @@ -184,7 +184,6 @@ LL | | LL | | Some(1), LL | | Some(2), ... | -LL | | } LL | | } | |_____^ | diff --git a/tests/ui/manual_let_else.stderr b/tests/ui/manual_let_else.stderr index 55a410982ad..dcd5d456111 100644 --- a/tests/ui/manual_let_else.stderr +++ b/tests/ui/manual_let_else.stderr @@ -148,7 +148,6 @@ LL | | LL | | v_some LL | | } else { ... | -LL | | } LL | | }; | |______^ | @@ -175,7 +174,6 @@ LL | | LL | | v_some LL | | } else { ... | -LL | | } LL | | }; | |______^ | @@ -197,7 +195,6 @@ LL | | LL | | v_some LL | | } else { ... | -LL | | } LL | | }; | |______^ | @@ -306,7 +303,6 @@ LL | | LL | | v_some LL | | } else { ... | -LL | | } LL | | }; | |______^ | diff --git a/tests/ui/manual_unwrap_or.stderr b/tests/ui/manual_unwrap_or.stderr index c93a8952a08..a5a64ecb9a3 100644 --- a/tests/ui/manual_unwrap_or.stderr +++ b/tests/ui/manual_unwrap_or.stderr @@ -36,7 +36,6 @@ LL | | Some(i) => i, LL | | None => { LL | | 42 + 42 ... | -LL | | } LL | | }; | |_____^ | @@ -130,7 +129,6 @@ LL | | Ok(i) => i, LL | | Err(_) => { LL | | 42 + 42 ... | -LL | | } LL | | }; | |_____^ | diff --git a/tests/ui/missing_doc.stderr b/tests/ui/missing_doc.stderr index 133c76ac9d4..6554eed1610 100644 --- a/tests/ui/missing_doc.stderr +++ b/tests/ui/missing_doc.stderr @@ -72,7 +72,6 @@ LL | | /// dox LL | | pub fn documented() {} LL | | pub fn undocumented1() {} ... | -LL | | } LL | | } | |_^ diff --git a/tests/ui/missing_fields_in_debug.stderr b/tests/ui/missing_fields_in_debug.stderr index 8c1810909dd..5e51194c4b3 100644 --- a/tests/ui/missing_fields_in_debug.stderr +++ b/tests/ui/missing_fields_in_debug.stderr @@ -6,7 +6,6 @@ LL | | LL | | // unused field: hidden LL | | fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result { ... | -LL | | } LL | | } | |_^ | @@ -28,7 +27,6 @@ LL | | LL | | // unused fields: hidden, hidden2, hidden4 LL | | fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result { ... | -LL | | } LL | | } | |_^ | @@ -58,7 +56,6 @@ LL | | LL | | fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result { LL | | let mut f = formatter.debug_struct("MultiExprDebugImpl"); ... | -LL | | } LL | | } | |_^ | diff --git a/tests/ui/needless_for_each_unfixable.stderr b/tests/ui/needless_for_each_unfixable.stderr index 9d3f639efbf..682140a1dfd 100644 --- a/tests/ui/needless_for_each_unfixable.stderr +++ b/tests/ui/needless_for_each_unfixable.stderr @@ -6,7 +6,6 @@ LL | | LL | | LL | | if *v == 10 { ... | -LL | | } LL | | }); | |_______^ | diff --git a/tests/ui/never_loop.stderr b/tests/ui/never_loop.stderr index bd9bdc4addb..dab3488af10 100644 --- a/tests/ui/never_loop.stderr +++ b/tests/ui/never_loop.stderr @@ -72,7 +72,6 @@ LL | | LL | | // never loops LL | | match x { ... | -LL | | } LL | | } | |_____^ | @@ -123,7 +122,6 @@ LL | | LL | | 'b: { LL | | break 'b 'c: { ... | -LL | | } LL | | } | |_____^ diff --git a/tests/ui/single_match_else.stderr b/tests/ui/single_match_else.stderr index a2801751a43..aa494520b84 100644 --- a/tests/ui/single_match_else.stderr +++ b/tests/ui/single_match_else.stderr @@ -68,8 +68,7 @@ LL | / match Result::::Ok(1) { LL | | Ok(a) => println!("${:?}", a), LL | | Err(_) => { LL | | println!("else block"); -LL | | return; -LL | | } +... | LL | | } | |_____^ | @@ -88,8 +87,7 @@ LL | / match Cow::from("moo") { LL | | Cow::Owned(a) => println!("${:?}", a), LL | | Cow::Borrowed(_) => { LL | | println!("else block"); -LL | | return; -LL | | } +... | LL | | } | |_____^ | diff --git a/tests/ui/unit_cmp.stderr b/tests/ui/unit_cmp.stderr index f9473d3be26..9e067edb846 100644 --- a/tests/ui/unit_cmp.stderr +++ b/tests/ui/unit_cmp.stderr @@ -34,7 +34,6 @@ LL | | LL | | { LL | | true; ... | -LL | | } LL | | ); | |_____^ @@ -46,7 +45,6 @@ LL | | LL | | { LL | | true; ... | -LL | | } LL | | ); | |_____^ @@ -58,7 +56,6 @@ LL | | LL | | { LL | | true; ... | -LL | | } LL | | ); | |_____^ @@ -70,7 +67,6 @@ LL | | LL | | { LL | | true; ... | -LL | | } LL | | ); | |_____^ diff --git a/tests/ui/unnecessary_lazy_eval.stderr b/tests/ui/unnecessary_lazy_eval.stderr index 27c064b8b7f..35a2144c389 100644 --- a/tests/ui/unnecessary_lazy_eval.stderr +++ b/tests/ui/unnecessary_lazy_eval.stderr @@ -435,7 +435,6 @@ error: unnecessary closure used to substitute value for `Result::Err` LL | let _: Result = res. | ___________________________________^ ... | -LL | | // some lines LL | | or_else(|_| Ok(ext_str.some_field)); | |_______________________________________^ | diff --git a/tests/ui/unnecessary_wraps.stderr b/tests/ui/unnecessary_wraps.stderr index 59986d895b3..b304d4dce6e 100644 --- a/tests/ui/unnecessary_wraps.stderr +++ b/tests/ui/unnecessary_wraps.stderr @@ -6,7 +6,6 @@ LL | | LL | | LL | | if a && b { ... | -LL | | } LL | | } | |_^ | @@ -112,7 +111,6 @@ LL | | LL | | if a && b { LL | | return Some(()); ... | -LL | | } LL | | } | |_^ | @@ -139,7 +137,6 @@ LL | | LL | | if a && b { LL | | return Ok(()); ... | -LL | | } LL | | } | |_^ | diff --git a/tests/ui/unwrap_in_result.stderr b/tests/ui/unwrap_in_result.stderr index 752177aaca5..201d4ae36ae 100644 --- a/tests/ui/unwrap_in_result.stderr +++ b/tests/ui/unwrap_in_result.stderr @@ -6,7 +6,6 @@ LL | | LL | | // checks whether a string represents a number divisible by 3 LL | | let i = i_str.parse::().unwrap(); ... | -LL | | } LL | | } | |_____^ | diff --git a/tests/ui/while_let_loop.stderr b/tests/ui/while_let_loop.stderr index 5212d4fdcc7..10c2311d82f 100644 --- a/tests/ui/while_let_loop.stderr +++ b/tests/ui/while_let_loop.stderr @@ -6,7 +6,6 @@ LL | | LL | | LL | | if let Some(_x) = y { ... | -LL | | } LL | | } | |_____^ help: try: `while let Some(_x) = y { .. }` | @@ -45,7 +44,6 @@ LL | | LL | | let x = match y { LL | | Some(x) => x, ... | -LL | | } LL | | } | |_____^ help: try: `while let Some(x) = y { .. }` -- cgit 1.4.1-3-g733a5 From 51ff9843146313daf676158d0e765a86e58637f8 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Wed, 6 Nov 2024 17:53:59 +0000 Subject: Stabilize async closures --- tests/ui/async_yields_async.fixed | 1 - tests/ui/async_yields_async.rs | 1 - tests/ui/async_yields_async.stderr | 12 ++++---- tests/ui/author/blocks.rs | 1 - tests/ui/infinite_loops.rs | 1 - tests/ui/infinite_loops.stderr | 42 +++++++++++++------------- tests/ui/redundant_closure_call_fixable.fixed | 1 - tests/ui/redundant_closure_call_fixable.rs | 1 - tests/ui/redundant_closure_call_fixable.stderr | 34 ++++++++++----------- tests/ui/redundant_locals.rs | 2 +- 10 files changed, 45 insertions(+), 51 deletions(-) diff --git a/tests/ui/async_yields_async.fixed b/tests/ui/async_yields_async.fixed index 208651bab1f..48402164a82 100644 --- a/tests/ui/async_yields_async.fixed +++ b/tests/ui/async_yields_async.fixed @@ -1,4 +1,3 @@ -#![feature(async_closure)] #![warn(clippy::async_yields_async)] #![allow(clippy::redundant_async_block)] diff --git a/tests/ui/async_yields_async.rs b/tests/ui/async_yields_async.rs index b124c994442..8ad016b6bb4 100644 --- a/tests/ui/async_yields_async.rs +++ b/tests/ui/async_yields_async.rs @@ -1,4 +1,3 @@ -#![feature(async_closure)] #![warn(clippy::async_yields_async)] #![allow(clippy::redundant_async_block)] diff --git a/tests/ui/async_yields_async.stderr b/tests/ui/async_yields_async.stderr index 861c3f2ce4a..c900a9d7421 100644 --- a/tests/ui/async_yields_async.stderr +++ b/tests/ui/async_yields_async.stderr @@ -1,5 +1,5 @@ error: an async construct yields a type which is itself awaitable - --> tests/ui/async_yields_async.rs:38:9 + --> tests/ui/async_yields_async.rs:37:9 | LL | let _h = async { | _____________________- @@ -20,7 +20,7 @@ LL + }.await | error: an async construct yields a type which is itself awaitable - --> tests/ui/async_yields_async.rs:43:9 + --> tests/ui/async_yields_async.rs:42:9 | LL | let _i = async { | ____________________- @@ -33,7 +33,7 @@ LL | | }; | |_____- outer async construct error: an async construct yields a type which is itself awaitable - --> tests/ui/async_yields_async.rs:49:9 + --> tests/ui/async_yields_async.rs:48:9 | LL | let _j = async || { | ________________________- @@ -52,7 +52,7 @@ LL + }.await | error: an async construct yields a type which is itself awaitable - --> tests/ui/async_yields_async.rs:54:9 + --> tests/ui/async_yields_async.rs:53:9 | LL | let _k = async || { | _______________________- @@ -65,7 +65,7 @@ LL | | }; | |_____- outer async construct error: an async construct yields a type which is itself awaitable - --> tests/ui/async_yields_async.rs:56:23 + --> tests/ui/async_yields_async.rs:55:23 | LL | let _l = async || CustomFutureType; | ^^^^^^^^^^^^^^^^ @@ -75,7 +75,7 @@ LL | let _l = async || CustomFutureType; | help: consider awaiting this value: `CustomFutureType.await` error: an async construct yields a type which is itself awaitable - --> tests/ui/async_yields_async.rs:62:9 + --> tests/ui/async_yields_async.rs:61:9 | LL | let _m = async || { | _______________________- diff --git a/tests/ui/author/blocks.rs b/tests/ui/author/blocks.rs index 164f7d0d9d6..e9db611a2aa 100644 --- a/tests/ui/author/blocks.rs +++ b/tests/ui/author/blocks.rs @@ -2,7 +2,6 @@ #![allow(redundant_semicolons, clippy::no_effect)] #![feature(stmt_expr_attributes)] -#![feature(async_closure)] #[rustfmt::skip] fn main() { diff --git a/tests/ui/infinite_loops.rs b/tests/ui/infinite_loops.rs index 0613eddce26..d7be6f9ce7e 100644 --- a/tests/ui/infinite_loops.rs +++ b/tests/ui/infinite_loops.rs @@ -3,7 +3,6 @@ #![allow(clippy::never_loop)] #![warn(clippy::infinite_loop)] -#![feature(async_closure)] extern crate proc_macros; use proc_macros::{external, with_span}; diff --git a/tests/ui/infinite_loops.stderr b/tests/ui/infinite_loops.stderr index 3a3ed7d0fe8..7635a7442f4 100644 --- a/tests/ui/infinite_loops.stderr +++ b/tests/ui/infinite_loops.stderr @@ -1,5 +1,5 @@ error: infinite loop detected - --> tests/ui/infinite_loops.rs:14:5 + --> tests/ui/infinite_loops.rs:13:5 | LL | / loop { LL | | @@ -15,7 +15,7 @@ LL | fn no_break() -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:21:5 + --> tests/ui/infinite_loops.rs:20:5 | LL | / loop { LL | | @@ -32,7 +32,7 @@ LL | fn all_inf() -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:23:9 + --> tests/ui/infinite_loops.rs:22:9 | LL | / loop { LL | | @@ -49,7 +49,7 @@ LL | fn all_inf() -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:25:13 + --> tests/ui/infinite_loops.rs:24:13 | LL | / loop { LL | | @@ -63,7 +63,7 @@ LL | fn all_inf() -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:39:5 + --> tests/ui/infinite_loops.rs:38:5 | LL | / loop { LL | | @@ -74,7 +74,7 @@ LL | | } = help: if this is not intended, try adding a `break` or `return` condition in the loop error: infinite loop detected - --> tests/ui/infinite_loops.rs:52:5 + --> tests/ui/infinite_loops.rs:51:5 | LL | / loop { LL | | fn inner_fn() -> ! { @@ -90,7 +90,7 @@ LL | fn no_break_never_ret_noise() -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:95:5 + --> tests/ui/infinite_loops.rs:94:5 | LL | / loop { LL | | @@ -107,7 +107,7 @@ LL | fn break_inner_but_not_outer_1(cond: bool) -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:106:5 + --> tests/ui/infinite_loops.rs:105:5 | LL | / loop { LL | | @@ -124,7 +124,7 @@ LL | fn break_inner_but_not_outer_2(cond: bool) -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:120:9 + --> tests/ui/infinite_loops.rs:119:9 | LL | / loop { LL | | @@ -138,7 +138,7 @@ LL | fn break_outer_but_not_inner() -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:143:9 + --> tests/ui/infinite_loops.rs:142:9 | LL | / loop { LL | | @@ -155,7 +155,7 @@ LL | fn break_wrong_loop(cond: bool) -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:183:5 + --> tests/ui/infinite_loops.rs:182:5 | LL | / loop { LL | | @@ -172,7 +172,7 @@ LL | fn match_like() -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:224:5 + --> tests/ui/infinite_loops.rs:223:5 | LL | / loop { LL | | @@ -186,7 +186,7 @@ LL | fn match_like() -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:229:5 + --> tests/ui/infinite_loops.rs:228:5 | LL | / loop { LL | | @@ -203,7 +203,7 @@ LL | fn match_like() -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:334:9 + --> tests/ui/infinite_loops.rs:333:9 | LL | / loop { LL | | @@ -217,7 +217,7 @@ LL | fn problematic_trait_method() -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:344:9 + --> tests/ui/infinite_loops.rs:343:9 | LL | / loop { LL | | @@ -231,7 +231,7 @@ LL | fn could_be_problematic() -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:353:9 + --> tests/ui/infinite_loops.rs:352:9 | LL | / loop { LL | | @@ -245,7 +245,7 @@ LL | let _loop_forever = || -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:367:8 + --> tests/ui/infinite_loops.rs:366:8 | LL | Ok(loop { | ________^ @@ -256,7 +256,7 @@ LL | | }) = help: if this is not intended, try adding a `break` or `return` condition in the loop error: infinite loop detected - --> tests/ui/infinite_loops.rs:409:5 + --> tests/ui/infinite_loops.rs:408:5 | LL | / 'infinite: loop { LL | | @@ -272,7 +272,7 @@ LL | fn continue_outer() -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:416:5 + --> tests/ui/infinite_loops.rs:415:5 | LL | / loop { LL | | @@ -289,7 +289,7 @@ LL | fn continue_outer() -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:418:9 + --> tests/ui/infinite_loops.rs:417:9 | LL | / 'inner: loop { LL | | loop { @@ -304,7 +304,7 @@ LL | fn continue_outer() -> ! { | ++++ error: infinite loop detected - --> tests/ui/infinite_loops.rs:426:5 + --> tests/ui/infinite_loops.rs:425:5 | LL | / loop { LL | | diff --git a/tests/ui/redundant_closure_call_fixable.fixed b/tests/ui/redundant_closure_call_fixable.fixed index 191f7719904..9138a8bacfe 100644 --- a/tests/ui/redundant_closure_call_fixable.fixed +++ b/tests/ui/redundant_closure_call_fixable.fixed @@ -1,4 +1,3 @@ -#![feature(async_closure)] #![warn(clippy::redundant_closure_call)] #![allow(clippy::redundant_async_block)] #![allow(clippy::type_complexity)] diff --git a/tests/ui/redundant_closure_call_fixable.rs b/tests/ui/redundant_closure_call_fixable.rs index 33a3b90f9cf..ede6fa27778 100644 --- a/tests/ui/redundant_closure_call_fixable.rs +++ b/tests/ui/redundant_closure_call_fixable.rs @@ -1,4 +1,3 @@ -#![feature(async_closure)] #![warn(clippy::redundant_closure_call)] #![allow(clippy::redundant_async_block)] #![allow(clippy::type_complexity)] diff --git a/tests/ui/redundant_closure_call_fixable.stderr b/tests/ui/redundant_closure_call_fixable.stderr index 000d81f811f..8e0d37df96b 100644 --- a/tests/ui/redundant_closure_call_fixable.stderr +++ b/tests/ui/redundant_closure_call_fixable.stderr @@ -1,5 +1,5 @@ error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:16:13 + --> tests/ui/redundant_closure_call_fixable.rs:15:13 | LL | let a = (|| 42)(); | ^^^^^^^^^ help: try doing something like: `42` @@ -8,7 +8,7 @@ LL | let a = (|| 42)(); = help: to override `-D warnings` add `#[allow(clippy::redundant_closure_call)]` error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:17:13 + --> tests/ui/redundant_closure_call_fixable.rs:16:13 | LL | let b = (async || { | _____________^ @@ -28,7 +28,7 @@ LL ~ }; | error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:22:13 + --> tests/ui/redundant_closure_call_fixable.rs:21:13 | LL | let c = (|| { | _____________^ @@ -48,13 +48,13 @@ LL ~ }; | error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:27:13 + --> tests/ui/redundant_closure_call_fixable.rs:26:13 | LL | let d = (async || something().await)(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try doing something like: `async { something().await }` error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:36:13 + --> tests/ui/redundant_closure_call_fixable.rs:35:13 | LL | (|| m!())() | ^^^^^^^^^^^ help: try doing something like: `m!()` @@ -65,7 +65,7 @@ LL | m2!(); = note: this error originates in the macro `m2` (in Nightly builds, run with -Z macro-backtrace for more info) error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:31:13 + --> tests/ui/redundant_closure_call_fixable.rs:30:13 | LL | (|| 0)() | ^^^^^^^^ help: try doing something like: `0` @@ -76,67 +76,67 @@ LL | m2!(); = note: this error originates in the macro `m` which comes from the expansion of the macro `m2` (in Nightly builds, run with -Z macro-backtrace for more info) error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:44:16 + --> tests/ui/redundant_closure_call_fixable.rs:43:16 | LL | assert_eq!((|| || 43)()(), 42); | ^^^^^^^^^^^^^^ help: try doing something like: `43` error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:53:10 + --> tests/ui/redundant_closure_call_fixable.rs:52:10 | LL | dbg!((|| 42)()); | ^^^^^^^^^ help: try doing something like: `42` error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:56:13 + --> tests/ui/redundant_closure_call_fixable.rs:55:13 | LL | let a = (|| || || 123)(); | ^^^^^^^^^^^^^^^^ help: try doing something like: `(|| || 123)` error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:60:13 + --> tests/ui/redundant_closure_call_fixable.rs:59:13 | LL | let a = (|| || || || async || 1)()()()()(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try doing something like: `async { 1 }` error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:69:13 + --> tests/ui/redundant_closure_call_fixable.rs:68:13 | LL | let a = (|| echo!(|| echo!(|| 1)))()()(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try doing something like: `1` error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:71:13 + --> tests/ui/redundant_closure_call_fixable.rs:70:13 | LL | let a = (|| echo!((|| 123)))()(); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try doing something like: `123` error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:84:11 + --> tests/ui/redundant_closure_call_fixable.rs:83:11 | LL | bar()((|| || 42)()(), 5); | ^^^^^^^^^^^^^^ help: try doing something like: `42` error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:85:9 + --> tests/ui/redundant_closure_call_fixable.rs:84:9 | LL | foo((|| || 42)()(), 5); | ^^^^^^^^^^^^^^ help: try doing something like: `42` error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:89:5 + --> tests/ui/redundant_closure_call_fixable.rs:88:5 | LL | (|| async {})().await; | ^^^^^^^^^^^^^^^ help: try doing something like: `async {}` error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:98:18 + --> tests/ui/redundant_closure_call_fixable.rs:97:18 | LL | spawn_on((|| async move {})()); | ^^^^^^^^^^^^^^^^^^^^ help: try doing something like: `async move {}` error: try not to call a closure in the expression where it is declared - --> tests/ui/redundant_closure_call_fixable.rs:103:28 + --> tests/ui/redundant_closure_call_fixable.rs:102:28 | LL | std::convert::identity((|| 13_i32 + 36_i32)()).leading_zeros(); | ^^^^^^^^^^^^^^^^^^^^^^ help: try doing something like: `13_i32 + 36_i32` diff --git a/tests/ui/redundant_locals.rs b/tests/ui/redundant_locals.rs index d21aa240b2d..3e7695106a7 100644 --- a/tests/ui/redundant_locals.rs +++ b/tests/ui/redundant_locals.rs @@ -1,7 +1,7 @@ //@aux-build:proc_macros.rs #![allow(unused, clippy::no_effect, clippy::needless_pass_by_ref_mut)] #![warn(clippy::redundant_locals)] -#![feature(async_closure, coroutines, stmt_expr_attributes)] +#![feature(coroutines, stmt_expr_attributes)] extern crate proc_macros; use proc_macros::{external, with_span}; -- cgit 1.4.1-3-g733a5 From db7e4531243d11ddf88a068afbb15339f76115ef Mon Sep 17 00:00:00 2001 From: Scott Gerring Date: Fri, 13 Dec 2024 10:41:10 +0100 Subject: chore: use multipart_suggestion in significant_drop_tightening lint --- clippy_lints/src/significant_drop_tightening.rs | 12 +- tests/ui/significant_drop_tightening.fixed | 144 ++++++++++++++++++++++++ tests/ui/significant_drop_tightening.rs | 2 - tests/ui/significant_drop_tightening.stderr | 18 +-- 4 files changed, 153 insertions(+), 23 deletions(-) create mode 100644 tests/ui/significant_drop_tightening.fixed diff --git a/clippy_lints/src/significant_drop_tightening.rs b/clippy_lints/src/significant_drop_tightening.rs index 1a5b958e6a6..c690696aefc 100644 --- a/clippy_lints/src/significant_drop_tightening.rs +++ b/clippy_lints/src/significant_drop_tightening.rs @@ -99,16 +99,10 @@ impl<'tcx> LateLintPass<'tcx> for SignificantDropTightening<'tcx> { snippet(cx, apa.last_bind_ident.span, ".."), ) }; - diag.span_suggestion_verbose( - apa.first_stmt_span, + + diag.multipart_suggestion_verbose( "merge the temporary construction with its single usage", - stmt, - Applicability::MaybeIncorrect, - ); - diag.span_suggestion( - apa.last_stmt_span, - "remove separated single usage", - "", + vec![(apa.first_stmt_span, stmt), (apa.last_stmt_span, String::new())], Applicability::MaybeIncorrect, ); }, diff --git a/tests/ui/significant_drop_tightening.fixed b/tests/ui/significant_drop_tightening.fixed new file mode 100644 index 00000000000..ed05f6e0c8d --- /dev/null +++ b/tests/ui/significant_drop_tightening.fixed @@ -0,0 +1,144 @@ +#![warn(clippy::significant_drop_tightening)] + +use std::sync::Mutex; + +pub fn complex_return_triggers_the_lint() -> i32 { + fn foo() -> i32 { + 1 + } + let mutex = Mutex::new(1); + let lock = mutex.lock().unwrap(); + let _ = *lock; + let _ = *lock; + drop(lock); + foo() +} + +pub fn issue_10413() { + let mutex = Mutex::new(Some(1)); + let opt = Some(1); + if opt.is_some() { + let lock = mutex.lock().unwrap(); + let _ = *lock; + if opt.is_some() { + let _ = *lock; + } + } +} + +pub fn issue_11128() { + use std::mem::drop as unlock; + + struct Foo { + droppable: Option>, + mutex: Mutex>, + } + + impl Drop for Foo { + fn drop(&mut self) { + if let Some(droppable) = self.droppable.take() { + let lock = self.mutex.lock().unwrap(); + let idx_opt = lock.iter().copied().find(|el| Some(el) == droppable.first()); + if let Some(idx) = idx_opt { + let local_droppable = vec![lock.first().copied().unwrap_or_default()]; + unlock(lock); + drop(local_droppable); + } + } + } + } +} + +pub fn issue_11160() -> bool { + let mutex = Mutex::new(1i32); + let lock = mutex.lock().unwrap(); + let _ = lock.abs(); + true +} + +pub fn issue_11189() { + struct Number { + pub value: u32, + } + + fn do_something() -> Result<(), ()> { + let number = Mutex::new(Number { value: 1 }); + let number2 = Mutex::new(Number { value: 2 }); + let number3 = Mutex::new(Number { value: 3 }); + let mut lock = number.lock().unwrap(); + let mut lock2 = number2.lock().unwrap(); + let mut lock3 = number3.lock().unwrap(); + lock.value += 1; + lock2.value += 1; + lock3.value += 1; + drop((lock, lock2, lock3)); + Ok(()) + } +} + +pub fn path_return_can_be_ignored() -> i32 { + let mutex = Mutex::new(1); + let lock = mutex.lock().unwrap(); + let rslt = *lock; + let _ = *lock; + rslt +} + +pub fn post_bindings_can_be_ignored() { + let mutex = Mutex::new(1); + let lock = mutex.lock().unwrap(); + let rslt = *lock; + let another = rslt; + let _ = another; +} + +pub fn unnecessary_contention_with_multiple_owned_results() { + { + let mutex = Mutex::new(1i32); + let lock = mutex.lock().unwrap(); + let _ = lock.abs(); + let _ = lock.is_positive(); + } + + { + let mutex = Mutex::new(1i32); + let lock = mutex.lock().unwrap(); + let rslt0 = lock.abs(); + let rslt1 = lock.is_positive(); + drop(lock); + do_heavy_computation_that_takes_time((rslt0, rslt1)); + } +} + +pub fn unnecessary_contention_with_single_owned_results() { + { + let mutex = Mutex::new(1i32); + let lock = mutex.lock().unwrap(); + let _ = lock.abs(); + } + { + let mutex = Mutex::new(vec![1i32]); + let mut lock = mutex.lock().unwrap(); + lock.clear(); + } + + { + let mutex = Mutex::new(1i32); + + let rslt0 = mutex.lock().unwrap().abs(); + + do_heavy_computation_that_takes_time(rslt0); + } + { + let mutex = Mutex::new(vec![1i32]); + + mutex.lock().unwrap().clear(); + + do_heavy_computation_that_takes_time(()); + } +} + +// Marker used for illustration purposes. +pub fn do_heavy_computation_that_takes_time(_: T) {} + +fn main() {} diff --git a/tests/ui/significant_drop_tightening.rs b/tests/ui/significant_drop_tightening.rs index 77538167548..e5f17278f0f 100644 --- a/tests/ui/significant_drop_tightening.rs +++ b/tests/ui/significant_drop_tightening.rs @@ -1,7 +1,5 @@ #![warn(clippy::significant_drop_tightening)] -//@no-rustfix: need to change the suggestion to a multipart suggestion - use std::sync::Mutex; pub fn complex_return_triggers_the_lint() -> i32 { diff --git a/tests/ui/significant_drop_tightening.stderr b/tests/ui/significant_drop_tightening.stderr index 2d7da4f394d..0da2d69d9af 100644 --- a/tests/ui/significant_drop_tightening.stderr +++ b/tests/ui/significant_drop_tightening.stderr @@ -1,5 +1,5 @@ error: temporary with significant `Drop` can be early dropped - --> tests/ui/significant_drop_tightening.rs:12:9 + --> tests/ui/significant_drop_tightening.rs:10:9 | LL | pub fn complex_return_triggers_the_lint() -> i32 { | __________________________________________________- @@ -24,7 +24,7 @@ LL + drop(lock); | error: temporary with significant `Drop` can be early dropped - --> tests/ui/significant_drop_tightening.rs:106:13 + --> tests/ui/significant_drop_tightening.rs:104:13 | LL | / { LL | | let mutex = Mutex::new(1i32); @@ -44,7 +44,7 @@ LL + drop(lock); | error: temporary with significant `Drop` can be early dropped - --> tests/ui/significant_drop_tightening.rs:127:13 + --> tests/ui/significant_drop_tightening.rs:125:13 | LL | / { LL | | let mutex = Mutex::new(1i32); @@ -60,14 +60,11 @@ help: merge the temporary construction with its single usage | LL ~ LL + let rslt0 = mutex.lock().unwrap().abs(); - | -help: remove separated single usage - | -LL - let rslt0 = lock.abs(); +LL ~ | error: temporary with significant `Drop` can be early dropped - --> tests/ui/significant_drop_tightening.rs:133:17 + --> tests/ui/significant_drop_tightening.rs:131:17 | LL | / { LL | | let mutex = Mutex::new(vec![1i32]); @@ -83,10 +80,7 @@ help: merge the temporary construction with its single usage | LL ~ LL + mutex.lock().unwrap().clear(); - | -help: remove separated single usage - | -LL - lock.clear(); +LL ~ | error: aborting due to 4 previous errors -- cgit 1.4.1-3-g733a5 From efe3fe9b8c5f16bbf39af7415bbde9441bc54dbb Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Sat, 30 Nov 2024 22:42:27 +0100 Subject: Fix `single_match` lint being emitted when it should not --- clippy_lints/src/matches/mod.rs | 27 +++++++++++++++++++++++++-- clippy_utils/src/lib.rs | 14 ++++++++++---- tests/ui/single_match.fixed | 30 ++++++++++++++++++++++++++++-- tests/ui/single_match.rs | 20 ++++++++++++++++++++ tests/ui/single_match.stderr | 16 ++-------------- 5 files changed, 85 insertions(+), 22 deletions(-) diff --git a/clippy_lints/src/matches/mod.rs b/clippy_lints/src/matches/mod.rs index 64969271764..1fd2ebcb54a 100644 --- a/clippy_lints/src/matches/mod.rs +++ b/clippy_lints/src/matches/mod.rs @@ -27,7 +27,9 @@ mod wild_in_or_pats; use clippy_config::Conf; use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::walk_span_to_context; -use clippy_utils::{higher, is_direct_expn_of, is_in_const_context, is_span_match, span_contains_cfg}; +use clippy_utils::{ + higher, is_direct_expn_of, is_in_const_context, is_span_match, span_contains_cfg, span_extract_comments, +}; use rustc_hir::{Arm, Expr, ExprKind, LetStmt, MatchSource, Pat, PatKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; @@ -1059,7 +1061,28 @@ impl<'tcx> LateLintPass<'tcx> for Matches { } redundant_pattern_match::check_match(cx, expr, ex, arms); - single_match::check(cx, ex, arms, expr); + let source_map = cx.tcx.sess.source_map(); + let mut match_comments = span_extract_comments(source_map, expr.span); + // We remove comments from inside arms block. + if !match_comments.is_empty() { + for arm in arms { + for comment in span_extract_comments(source_map, arm.body.span) { + if let Some(index) = match_comments + .iter() + .enumerate() + .find(|(_, cm)| **cm == comment) + .map(|(index, _)| index) + { + match_comments.remove(index); + } + } + } + } + // If there are still comments, it means they are outside of the arms, therefore + // we should not lint. + if match_comments.is_empty() { + single_match::check(cx, ex, arms, expr); + } match_bool::check(cx, ex, arms, expr); overlapping_arms::check(cx, ex, arms); match_wild_enum::check(cx, ex, arms); diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs index 434c26d687d..d57b872c759 100644 --- a/clippy_utils/src/lib.rs +++ b/clippy_utils/src/lib.rs @@ -2977,12 +2977,18 @@ pub fn span_contains_comment(sm: &SourceMap, span: Span) -> bool { /// /// Comments are returned wrapped with their relevant delimiters pub fn span_extract_comment(sm: &SourceMap, span: Span) -> String { + span_extract_comments(sm, span).join("\n") +} + +/// Returns all the comments a given span contains. +/// +/// Comments are returned wrapped with their relevant delimiters. +pub fn span_extract_comments(sm: &SourceMap, span: Span) -> Vec { let snippet = sm.span_to_snippet(span).unwrap_or_default(); - let res = tokenize_with_text(&snippet) + tokenize_with_text(&snippet) .filter(|(t, ..)| matches!(t, TokenKind::BlockComment { .. } | TokenKind::LineComment { .. })) - .map(|(_, s, _)| s) - .join("\n"); - res + .map(|(_, s, _)| s.to_string()) + .collect::>() } pub fn span_find_starting_semi(sm: &SourceMap, span: Span) -> Span { diff --git a/tests/ui/single_match.fixed b/tests/ui/single_match.fixed index 4016b2699d6..3fb9afa86a5 100644 --- a/tests/ui/single_match.fixed +++ b/tests/ui/single_match.fixed @@ -17,7 +17,13 @@ fn single_match() { }; let x = Some(1u8); - if let Some(y) = x { println!("{:?}", y) } + match x { + // Note the missing block braces. + // We suggest `if let Some(y) = x { .. }` because the macro + // is expanded before we can do anything. + Some(y) => println!("{:?}", y), + _ => (), + } let z = (1u8, 1u8); if let (2..=3, 7..=9) = z { dummy() }; @@ -318,5 +324,25 @@ fn irrefutable_match() { - println!() + println!(); + + let mut x = vec![1i8]; + + // Should not lint. + match x.pop() { + // bla + Some(u) => println!("{u}"), + // more comments! + None => {}, + } + // Should not lint. + match x.pop() { + // bla + Some(u) => { + // bla + println!("{u}"); + }, + // bla + None => {}, + } } diff --git a/tests/ui/single_match.rs b/tests/ui/single_match.rs index 75edaa60605..b7d2e011151 100644 --- a/tests/ui/single_match.rs +++ b/tests/ui/single_match.rs @@ -401,4 +401,24 @@ fn irrefutable_match() { CONST_I32 => println!(), _ => {}, } + + let mut x = vec![1i8]; + + // Should not lint. + match x.pop() { + // bla + Some(u) => println!("{u}"), + // more comments! + None => {}, + } + // Should not lint. + match x.pop() { + // bla + Some(u) => { + // bla + println!("{u}"); + }, + // bla + None => {}, + } } diff --git a/tests/ui/single_match.stderr b/tests/ui/single_match.stderr index 9240b09c50a..d691b627abe 100644 --- a/tests/ui/single_match.stderr +++ b/tests/ui/single_match.stderr @@ -18,18 +18,6 @@ LL + println!("{:?}", y); LL ~ }; | -error: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let` - --> tests/ui/single_match.rs:23:5 - | -LL | / match x { -LL | | // Note the missing block braces. -LL | | // We suggest `if let Some(y) = x { .. }` because the macro -LL | | // is expanded before we can do anything. -LL | | Some(y) => println!("{:?}", y), -LL | | _ => (), -LL | | } - | |_____^ help: try: `if let Some(y) = x { println!("{:?}", y) }` - error: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let` --> tests/ui/single_match.rs:32:5 | @@ -279,7 +267,7 @@ LL | / match CONST_I32 { LL | | CONST_I32 => println!(), LL | | _ => {}, LL | | } - | |_____^ help: try: `println!()` + | |_____^ help: try: `println!();` -error: aborting due to 26 previous errors +error: aborting due to 25 previous errors -- cgit 1.4.1-3-g733a5 From f3a8d4c715372b0720b3a2fe9b4c72c37ee3f1e5 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Fri, 13 Dec 2024 16:18:37 +0000 Subject: Rename ty_def_id so people will stop using it by accident --- clippy_lints/src/methods/unnecessary_filter_map.rs | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/clippy_lints/src/methods/unnecessary_filter_map.rs b/clippy_lints/src/methods/unnecessary_filter_map.rs index 3de51bc661e..5b9e9e70e47 100644 --- a/clippy_lints/src/methods/unnecessary_filter_map.rs +++ b/clippy_lints/src/methods/unnecessary_filter_map.rs @@ -3,13 +3,12 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::ty::is_copy; use clippy_utils::usage::mutated_variables; use clippy_utils::visitors::{Descend, for_each_expr_without_closures}; -use clippy_utils::{MaybePath, is_res_lang_ctor, is_trait_method, path_res, path_to_local_id}; +use clippy_utils::{is_res_lang_ctor, is_trait_method, path_res, path_to_local_id}; use core::ops::ControlFlow; use rustc_errors::Applicability; use rustc_hir as hir; use rustc_hir::LangItem::{OptionNone, OptionSome}; use rustc_lint::LateContext; -use rustc_middle::query::Key; use rustc_middle::ty; use rustc_span::sym; @@ -44,7 +43,6 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'tcx>, a if name == "filter_map" && let hir::ExprKind::Call(expr, args) = body.value.kind && is_res_lang_ctor(cx, path_res(cx, expr), OptionSome) - && arg_id.ty_def_id() == args[0].hir_id().ty_def_id() && let hir::ExprKind::Path(_) = args[0].kind { span_lint_and_sugg( -- cgit 1.4.1-3-g733a5 From e38fa003013781a1c51ce6e94b4e4ad276096131 Mon Sep 17 00:00:00 2001 From: lapla-cogito Date: Fri, 13 Dec 2024 19:07:10 +0900 Subject: address wrong suggestions when using comparing with byte literal string in single_match lint --- clippy_lints/src/matches/single_match.rs | 2 +- tests/ui/single_match.fixed | 4 ++++ tests/ui/single_match.rs | 7 +++++++ tests/ui/single_match.stderr | 23 ++++++++++++++++------- 4 files changed, 28 insertions(+), 8 deletions(-) diff --git a/clippy_lints/src/matches/single_match.rs b/clippy_lints/src/matches/single_match.rs index 95a4bf6f60d..3ca20479f8e 100644 --- a/clippy_lints/src/matches/single_match.rs +++ b/clippy_lints/src/matches/single_match.rs @@ -129,7 +129,7 @@ fn report_single_pattern(cx: &LateContext<'_>, ex: &Expr<'_>, arm: &Arm<'_>, exp PatKind::Lit(Expr { kind: ExprKind::Lit(lit), .. - }) if lit.node.is_str() => pat_ref_count + 1, + }) if lit.node.is_str() || lit.node.is_bytestr() => pat_ref_count + 1, _ => pat_ref_count, }; // References are only implicitly added to the pattern, so no overflow here. diff --git a/tests/ui/single_match.fixed b/tests/ui/single_match.fixed index 3fb9afa86a5..d3d5fd8b35c 100644 --- a/tests/ui/single_match.fixed +++ b/tests/ui/single_match.fixed @@ -303,6 +303,10 @@ fn issue11365() { if let Some(A | B) = &Some(A) { println!() } } +fn issue12758(s: &[u8]) { + if &s[0..3] == b"foo" { println!() } +} + #[derive(Eq, PartialEq)] pub struct Data([u8; 4]); diff --git a/tests/ui/single_match.rs b/tests/ui/single_match.rs index b7d2e011151..2f3547c5063 100644 --- a/tests/ui/single_match.rs +++ b/tests/ui/single_match.rs @@ -361,6 +361,13 @@ fn issue11365() { } } +fn issue12758(s: &[u8]) { + match &s[0..3] { + b"foo" => println!(), + _ => {}, + } +} + #[derive(Eq, PartialEq)] pub struct Data([u8; 4]); diff --git a/tests/ui/single_match.stderr b/tests/ui/single_match.stderr index d691b627abe..54bbfbac093 100644 --- a/tests/ui/single_match.stderr +++ b/tests/ui/single_match.stderr @@ -204,8 +204,17 @@ LL | | None | Some(_) => {}, LL | | } | |_____^ help: try: `if let Some(A | B) = &Some(A) { println!() }` +error: you seem to be trying to use `match` for an equality check. Consider using `if` + --> tests/ui/single_match.rs:365:5 + | +LL | / match &s[0..3] { +LL | | b"foo" => println!(), +LL | | _ => {}, +LL | | } + | |_____^ help: try: `if &s[0..3] == b"foo" { println!() }` + error: this pattern is irrefutable, `match` is useless - --> tests/ui/single_match.rs:371:5 + --> tests/ui/single_match.rs:378:5 | LL | / match DATA { LL | | DATA => println!(), @@ -214,7 +223,7 @@ LL | | } | |_____^ help: try: `println!();` error: this pattern is irrefutable, `match` is useless - --> tests/ui/single_match.rs:376:5 + --> tests/ui/single_match.rs:383:5 | LL | / match CONST_I32 { LL | | CONST_I32 => println!(), @@ -223,7 +232,7 @@ LL | | } | |_____^ help: try: `println!();` error: this pattern is irrefutable, `match` is useless - --> tests/ui/single_match.rs:382:5 + --> tests/ui/single_match.rs:389:5 | LL | / match i { LL | | i => { @@ -243,7 +252,7 @@ LL + } | error: this pattern is irrefutable, `match` is useless - --> tests/ui/single_match.rs:390:5 + --> tests/ui/single_match.rs:397:5 | LL | / match i { LL | | i => {}, @@ -252,7 +261,7 @@ LL | | } | |_____^ help: `match` expression can be removed error: this pattern is irrefutable, `match` is useless - --> tests/ui/single_match.rs:395:5 + --> tests/ui/single_match.rs:402:5 | LL | / match i { LL | | i => (), @@ -261,7 +270,7 @@ LL | | } | |_____^ help: `match` expression can be removed error: this pattern is irrefutable, `match` is useless - --> tests/ui/single_match.rs:400:5 + --> tests/ui/single_match.rs:407:5 | LL | / match CONST_I32 { LL | | CONST_I32 => println!(), @@ -269,5 +278,5 @@ LL | | _ => {}, LL | | } | |_____^ help: try: `println!();` -error: aborting due to 25 previous errors +error: aborting due to 26 previous errors -- cgit 1.4.1-3-g733a5 From f33deb7511087f0dbaa343dc92927e4ac20c52b9 Mon Sep 17 00:00:00 2001 From: Esteban Küber Date: Fri, 13 Dec 2024 18:18:19 +0000 Subject: Account for `///` when rendering multiline spans Don't consider `///` and `//!` docstrings to be empty for the purposes of multiline span rendering. --- tests/ui/doc/unbalanced_ticks.stderr | 4 +++- tests/ui/empty_line_after/doc_comments.stderr | 3 +++ tests/ui/needless_doc_main.stderr | 14 ++++++++++---- tests/ui/suspicious_doc_comments_unfixable.stderr | 9 +++++++-- tests/ui/too_long_first_doc_paragraph-fix.stderr | 4 +++- tests/ui/too_long_first_doc_paragraph.stderr | 7 +++++-- 6 files changed, 31 insertions(+), 10 deletions(-) diff --git a/tests/ui/doc/unbalanced_ticks.stderr b/tests/ui/doc/unbalanced_ticks.stderr index 3bcf65c4595..50324010e97 100644 --- a/tests/ui/doc/unbalanced_ticks.stderr +++ b/tests/ui/doc/unbalanced_ticks.stderr @@ -3,7 +3,9 @@ error: backticks are unbalanced | LL | /// This is a doc comment with `unbalanced_tick marks and several words that | _____^ -... | +LL | | +LL | | /// should be `encompassed_by` tick marks because they `contain_underscores`. +LL | | /// Because of the initial `unbalanced_tick` pair, the error message is LL | | /// very `confusing_and_misleading`. | |____________________________________^ | diff --git a/tests/ui/empty_line_after/doc_comments.stderr b/tests/ui/empty_line_after/doc_comments.stderr index c4d4dde7f73..c5d5f3d3759 100644 --- a/tests/ui/empty_line_after/doc_comments.stderr +++ b/tests/ui/empty_line_after/doc_comments.stderr @@ -96,6 +96,9 @@ error: empty lines after doc comment --> tests/ui/empty_line_after/doc_comments.rs:63:5 | LL | / /// for OldA +LL | | // struct OldA; +LL | | +LL | | /// Docs ... | LL | | | |_^ diff --git a/tests/ui/needless_doc_main.stderr b/tests/ui/needless_doc_main.stderr index cfb389801db..7e362cf377c 100644 --- a/tests/ui/needless_doc_main.stderr +++ b/tests/ui/needless_doc_main.stderr @@ -3,7 +3,9 @@ error: needless `fn main` in doctest | LL | /// fn main() { | _____^ -... | +LL | | +LL | | +LL | | /// unimplemented!(); LL | | /// } | |_____^ | @@ -15,7 +17,8 @@ error: needless `fn main` in doctest | LL | /// fn main() -> () { | _____^ -... | +LL | | +LL | | /// unimplemented!(); LL | | /// } | |_____^ @@ -24,7 +27,8 @@ error: needless `fn main` in doctest | LL | /// fn main() { | _____^ -... | +LL | | +LL | | /// unimplemented!(); LL | | /// } | |_____^ @@ -33,7 +37,9 @@ error: needless `fn main` in doctest | LL | /// // the fn is not always the first line | _____^ -... | +LL | | +LL | | /// fn main() { +LL | | /// unimplemented!(); LL | | /// } | |_____^ diff --git a/tests/ui/suspicious_doc_comments_unfixable.stderr b/tests/ui/suspicious_doc_comments_unfixable.stderr index 2209a63d2c0..d15f16f7c50 100644 --- a/tests/ui/suspicious_doc_comments_unfixable.stderr +++ b/tests/ui/suspicious_doc_comments_unfixable.stderr @@ -2,7 +2,10 @@ error: this is an outer doc comment and does not apply to the parent module or c --> tests/ui/suspicious_doc_comments_unfixable.rs:4:1 | LL | / ///! a -... | +LL | | +LL | | +LL | | ///! b +LL | | /// c LL | | ///! d | |______^ | @@ -22,7 +25,9 @@ error: this is an outer doc comment and does not apply to the parent module or c --> tests/ui/suspicious_doc_comments_unfixable.rs:12:1 | LL | / ///! a -... | +LL | | +LL | | ///! b +LL | | /// c LL | | ///! d | |______^ | diff --git a/tests/ui/too_long_first_doc_paragraph-fix.stderr b/tests/ui/too_long_first_doc_paragraph-fix.stderr index 5925d2f902a..6ef333f0cfd 100644 --- a/tests/ui/too_long_first_doc_paragraph-fix.stderr +++ b/tests/ui/too_long_first_doc_paragraph-fix.stderr @@ -2,7 +2,9 @@ error: first doc comment paragraph is too long --> tests/ui/too_long_first_doc_paragraph-fix.rs:3:1 | LL | / /// A very short summary. -... | +LL | | /// A much longer explanation that goes into a lot more detail about +LL | | /// how the thing works, possibly with doclinks and so one, +LL | | /// and probably spanning a many rows. Blablabla, it needs to be over LL | | /// 200 characters so I needed to write something longeeeeeeer. | |_^ | diff --git a/tests/ui/too_long_first_doc_paragraph.stderr b/tests/ui/too_long_first_doc_paragraph.stderr index c40ee2fcb48..95f42349b9b 100644 --- a/tests/ui/too_long_first_doc_paragraph.stderr +++ b/tests/ui/too_long_first_doc_paragraph.stderr @@ -2,7 +2,9 @@ error: first doc comment paragraph is too long --> tests/ui/too_long_first_doc_paragraph.rs:8:5 | LL | / //! A very short summary. -... | +LL | | //! A much longer explanation that goes into a lot more detail about +LL | | //! how the thing works, possibly with doclinks and so one, +LL | | //! and probably spanning a many rows. Blablabla, it needs to be over LL | | //! 200 characters so I needed to write something longeeeeeeer. | |____^ | @@ -27,7 +29,8 @@ error: first doc comment paragraph is too long --> tests/ui/too_long_first_doc_paragraph.rs:36:1 | LL | / /// Lorem -... | +LL | | /// ipsum dolor sit amet, consectetur adipiscing elit. Nunc turpis nunc, lacinia +LL | | /// a dolor in, pellentesque aliquet enim. Cras nec maximus sem. Mauris arcu libero, LL | | /// gravida non lacinia at, rhoncus eu lacus. | |_^ -- cgit 1.4.1-3-g733a5 From c9c62c432903dd286ca81edde1cc19721b231632 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Wed, 11 Dec 2024 22:18:39 +0000 Subject: (Re-)Implement impl_trait_in_bindings --- clippy_lints/src/dereference.rs | 1 + clippy_utils/src/hir_utils.rs | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/clippy_lints/src/dereference.rs b/clippy_lints/src/dereference.rs index bd4ce7ab922..e3959903fdd 100644 --- a/clippy_lints/src/dereference.rs +++ b/clippy_lints/src/dereference.rs @@ -814,6 +814,7 @@ impl TyCoercionStability { | TyKind::Tup(_) | TyKind::Path(_) => Self::Deref, TyKind::OpaqueDef(..) + | TyKind::TraitAscription(..) | TyKind::Infer | TyKind::Typeof(..) | TyKind::TraitObject(..) diff --git a/clippy_utils/src/hir_utils.rs b/clippy_utils/src/hir_utils.rs index 279025b9bf9..4b604f658b8 100644 --- a/clippy_utils/src/hir_utils.rs +++ b/clippy_utils/src/hir_utils.rs @@ -1260,7 +1260,8 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { | TyKind::Infer | TyKind::Never | TyKind::InferDelegation(..) - | TyKind::OpaqueDef(_) => {}, + | TyKind::OpaqueDef(_) + | TyKind::TraitAscription(_) => {}, } } -- cgit 1.4.1-3-g733a5 From bd078ad1b5fc9882a115cf4cc98f01c0f913bfd4 Mon Sep 17 00:00:00 2001 From: lapla-cogito Date: Sat, 14 Dec 2024 21:19:49 +0900 Subject: don't lint for creating an iterator from an empty array in filter_map_identity lint --- clippy_lints/src/methods/filter_map_identity.rs | 10 ++++++++++ tests/ui/filter_map_identity.fixed | 5 +++++ tests/ui/filter_map_identity.rs | 5 +++++ 3 files changed, 20 insertions(+) diff --git a/clippy_lints/src/methods/filter_map_identity.rs b/clippy_lints/src/methods/filter_map_identity.rs index cf7f276dabb..b04d761d486 100644 --- a/clippy_lints/src/methods/filter_map_identity.rs +++ b/clippy_lints/src/methods/filter_map_identity.rs @@ -2,6 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::{is_expr_identity_function, is_expr_untyped_identity_function, is_trait_method}; use rustc_errors::Applicability; use rustc_hir as hir; +use rustc_hir::ExprKind; use rustc_lint::LateContext; use rustc_span::{Span, sym}; @@ -21,6 +22,15 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>, filter_map_arg: if is_trait_method(cx, expr, sym::Iterator) && let Some(applicability) = is_identity(cx, filter_map_arg) { + // check if the iterator is from an empty array, see issue #12653 + if let ExprKind::MethodCall(_, recv, ..) = expr.kind + && let ExprKind::MethodCall(_, recv2, ..) = recv.kind + && let ExprKind::Array(arr) = recv2.kind + && arr.is_empty() + { + return; + } + span_lint_and_sugg( cx, FILTER_MAP_IDENTITY, diff --git a/tests/ui/filter_map_identity.fixed b/tests/ui/filter_map_identity.fixed index f3f6848e5f9..fdd020fcd77 100644 --- a/tests/ui/filter_map_identity.fixed +++ b/tests/ui/filter_map_identity.fixed @@ -81,3 +81,8 @@ fn main() { //~^ ERROR: use of } } + +fn issue12653() -> impl Iterator { + [].into_iter().filter_map(|x| x) + // No lint +} diff --git a/tests/ui/filter_map_identity.rs b/tests/ui/filter_map_identity.rs index b9aa9c05be8..a626de9f5bb 100644 --- a/tests/ui/filter_map_identity.rs +++ b/tests/ui/filter_map_identity.rs @@ -81,3 +81,8 @@ fn main() { //~^ ERROR: use of } } + +fn issue12653() -> impl Iterator { + [].into_iter().filter_map(|x| x) + // No lint +} -- cgit 1.4.1-3-g733a5 From bc410fc9f59e0cfbda6a6b4a96bf3d975227bbbe Mon Sep 17 00:00:00 2001 From: bjorn3 <17426603+bjorn3@users.noreply.github.com> Date: Sat, 14 Dec 2024 14:53:11 +0000 Subject: Stop handling specialization in clippy's to_string_trait_impl lint ToString can no longer be specialized, so no need to account for it in to_string_trait_impl either. --- clippy_lints/src/to_string_trait_impl.rs | 3 --- tests/ui/to_string_trait_impl.rs | 43 -------------------------------- tests/ui/to_string_trait_impl.stderr | 14 +---------- 3 files changed, 1 insertion(+), 59 deletions(-) diff --git a/clippy_lints/src/to_string_trait_impl.rs b/clippy_lints/src/to_string_trait_impl.rs index 0361836cdec..9596b85664b 100644 --- a/clippy_lints/src/to_string_trait_impl.rs +++ b/clippy_lints/src/to_string_trait_impl.rs @@ -1,5 +1,4 @@ use clippy_utils::diagnostics::span_lint_and_help; -use clippy_utils::ty::implements_trait; use rustc_hir::{Impl, Item, ItemKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; @@ -54,8 +53,6 @@ impl<'tcx> LateLintPass<'tcx> for ToStringTraitImpl { }) = it.kind && let Some(trait_did) = trait_ref.trait_def_id() && cx.tcx.is_diagnostic_item(sym::ToString, trait_did) - && let Some(display_did) = cx.tcx.get_diagnostic_item(sym::Display) - && !implements_trait(cx, cx.tcx.type_of(it.owner_id).instantiate_identity(), display_did, &[]) { span_lint_and_help( cx, diff --git a/tests/ui/to_string_trait_impl.rs b/tests/ui/to_string_trait_impl.rs index 4c1202d4203..7be9f7994f0 100644 --- a/tests/ui/to_string_trait_impl.rs +++ b/tests/ui/to_string_trait_impl.rs @@ -30,46 +30,3 @@ impl Bar { String::from("Bar") } } - -mod issue12263 { - pub struct MyStringWrapper<'a>(&'a str); - - impl std::fmt::Display for MyStringWrapper<'_> { - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { - self.0.fmt(f) - } - } - - impl ToString for MyStringWrapper<'_> { - fn to_string(&self) -> String { - self.0.to_string() - } - } - - pub struct S(T); - impl std::fmt::Display for S { - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { - todo!() - } - } - // no specialization if the generics differ, so lint - impl ToString for S { - fn to_string(&self) -> String { - todo!() - } - } - - pub struct S2(T); - impl std::fmt::Display for S2 { - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { - todo!() - } - } - - // also specialization if the generics don't differ - impl ToString for S2 { - fn to_string(&self) -> String { - todo!() - } - } -} diff --git a/tests/ui/to_string_trait_impl.stderr b/tests/ui/to_string_trait_impl.stderr index 304c9a5e1fb..fe8afc215f0 100644 --- a/tests/ui/to_string_trait_impl.stderr +++ b/tests/ui/to_string_trait_impl.stderr @@ -12,17 +12,5 @@ LL | | } = note: `-D clippy::to-string-trait-impl` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::to_string_trait_impl)]` -error: direct implementation of `ToString` - --> tests/ui/to_string_trait_impl.rs:56:5 - | -LL | / impl ToString for S { -LL | | fn to_string(&self) -> String { -LL | | todo!() -LL | | } -LL | | } - | |_____^ - | - = help: prefer implementing `Display` instead - -error: aborting due to 2 previous errors +error: aborting due to 1 previous error -- cgit 1.4.1-3-g733a5 From acf9177431d34f027d4a59d2775c77e37104b9e1 Mon Sep 17 00:00:00 2001 From: Oli Scherer Date: Fri, 13 Dec 2024 12:19:46 +0000 Subject: Add some convenience helper methods on `hir::Safety` --- clippy_lints/src/derive.rs | 4 ++-- clippy_lints/src/eta_reduction.rs | 2 +- clippy_lints/src/functions/misnamed_getters.rs | 4 ++-- clippy_lints/src/functions/not_unsafe_ptr_arg_deref.rs | 4 ++-- clippy_lints/src/inherent_to_string.rs | 4 ++-- clippy_lints/src/multiple_unsafe_ops_per_block.rs | 6 +++--- clippy_lints/src/new_without_default.rs | 2 +- clippy_lints/src/ptr.rs | 4 ++-- clippy_lints/src/undocumented_unsafe_blocks.rs | 4 ++-- clippy_utils/src/check_proc_macro.rs | 2 +- clippy_utils/src/ty.rs | 4 ++-- clippy_utils/src/visitors.rs | 10 +++++----- 12 files changed, 25 insertions(+), 25 deletions(-) diff --git a/clippy_lints/src/derive.rs b/clippy_lints/src/derive.rs index 8125dab8adf..f65edd36253 100644 --- a/clippy_lints/src/derive.rs +++ b/clippy_lints/src/derive.rs @@ -7,7 +7,7 @@ use rustc_errors::Applicability; use rustc_hir::def_id::DefId; use rustc_hir::intravisit::{FnKind, Visitor, walk_expr, walk_fn, walk_item}; use rustc_hir::{ - self as hir, BlockCheckMode, BodyId, Expr, ExprKind, FnDecl, Impl, Item, ItemKind, Safety, UnsafeSource, + self as hir, BlockCheckMode, BodyId, Expr, ExprKind, FnDecl, Impl, Item, ItemKind, UnsafeSource, }; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::hir::nested_filter; @@ -421,7 +421,7 @@ impl<'tcx> Visitor<'tcx> for UnsafeVisitor<'_, 'tcx> { id: LocalDefId, ) -> Self::Result { if let Some(header) = kind.header() - && header.safety == Safety::Unsafe + && header.safety.is_unsafe() { ControlFlow::Break(()) } else { diff --git a/clippy_lints/src/eta_reduction.rs b/clippy_lints/src/eta_reduction.rs index 8c22e43349f..2cd48ef98e5 100644 --- a/clippy_lints/src/eta_reduction.rs +++ b/clippy_lints/src/eta_reduction.rs @@ -281,7 +281,7 @@ fn check_inputs( } fn check_sig<'tcx>(closure_sig: FnSig<'tcx>, call_sig: FnSig<'tcx>) -> bool { - call_sig.safety == Safety::Safe && !has_late_bound_to_non_late_bound_regions(closure_sig, call_sig) + call_sig.safety.is_safe() && !has_late_bound_to_non_late_bound_regions(closure_sig, call_sig) } /// This walks through both signatures and checks for any time a late-bound region is expected by an diff --git a/clippy_lints/src/functions/misnamed_getters.rs b/clippy_lints/src/functions/misnamed_getters.rs index 2cbc4b07234..017571c38db 100644 --- a/clippy_lints/src/functions/misnamed_getters.rs +++ b/clippy_lints/src/functions/misnamed_getters.rs @@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::snippet; use rustc_errors::Applicability; use rustc_hir::intravisit::FnKind; -use rustc_hir::{Body, ExprKind, FnDecl, ImplicitSelfKind, Safety}; +use rustc_hir::{Body, ExprKind, FnDecl, ImplicitSelfKind}; use rustc_lint::LateContext; use rustc_middle::ty; use rustc_span::Span; @@ -34,7 +34,7 @@ pub fn check_fn(cx: &LateContext<'_>, kind: FnKind<'_>, decl: &FnDecl<'_>, body: ImplicitSelfKind::None => return, }; - let name = if sig.header.safety == Safety::Unsafe { + let name = if sig.header.safety.is_unsafe() { name.strip_suffix("_unchecked").unwrap_or(name) } else { name diff --git a/clippy_lints/src/functions/not_unsafe_ptr_arg_deref.rs b/clippy_lints/src/functions/not_unsafe_ptr_arg_deref.rs index 4986a311eba..3ded8dc3012 100644 --- a/clippy_lints/src/functions/not_unsafe_ptr_arg_deref.rs +++ b/clippy_lints/src/functions/not_unsafe_ptr_arg_deref.rs @@ -42,7 +42,7 @@ fn check_raw_ptr<'tcx>( body: &'tcx hir::Body<'tcx>, def_id: LocalDefId, ) { - if safety == hir::Safety::Safe && cx.effective_visibilities.is_exported(def_id) { + if safety.is_safe() && cx.effective_visibilities.is_exported(def_id) { let raw_ptrs = iter_input_pats(decl, body) .filter_map(|arg| raw_ptr_arg(cx, arg)) .collect::(); @@ -58,7 +58,7 @@ fn check_raw_ptr<'tcx>( }, hir::ExprKind::MethodCall(_, recv, args, _) => { let def_id = typeck.type_dependent_def_id(e.hir_id).unwrap(); - if cx.tcx.fn_sig(def_id).skip_binder().skip_binder().safety == hir::Safety::Unsafe { + if cx.tcx.fn_sig(def_id).skip_binder().skip_binder().safety.is_unsafe() { check_arg(cx, &raw_ptrs, recv); for arg in args { check_arg(cx, &raw_ptrs, arg); diff --git a/clippy_lints/src/inherent_to_string.rs b/clippy_lints/src/inherent_to_string.rs index ec6174bc030..e096dd25175 100644 --- a/clippy_lints/src/inherent_to_string.rs +++ b/clippy_lints/src/inherent_to_string.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::span_lint_and_help; use clippy_utils::ty::{implements_trait, is_type_lang_item}; use clippy_utils::{return_ty, trait_ref_of_method}; -use rustc_hir::{GenericParamKind, ImplItem, ImplItemKind, LangItem, Safety}; +use rustc_hir::{GenericParamKind, ImplItem, ImplItemKind, LangItem}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; use rustc_span::sym; @@ -95,7 +95,7 @@ impl<'tcx> LateLintPass<'tcx> for InherentToString { if let ImplItemKind::Fn(ref signature, _) = impl_item.kind // #11201 && let header = signature.header - && header.safety == Safety::Safe + && header.safety.is_safe() && header.abi == Abi::Rust && impl_item.ident.name == sym::to_string && let decl = signature.decl diff --git a/clippy_lints/src/multiple_unsafe_ops_per_block.rs b/clippy_lints/src/multiple_unsafe_ops_per_block.rs index 12bcc608174..79252bba74d 100644 --- a/clippy_lints/src/multiple_unsafe_ops_per_block.rs +++ b/clippy_lints/src/multiple_unsafe_ops_per_block.rs @@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::visitors::{Descend, Visitable, for_each_expr}; use core::ops::ControlFlow::Continue; use hir::def::{DefKind, Res}; -use hir::{BlockCheckMode, ExprKind, QPath, Safety, UnOp}; +use hir::{BlockCheckMode, ExprKind, QPath, UnOp}; use rustc_ast::Mutability; use rustc_hir as hir; use rustc_lint::{LateContext, LateLintPass}; @@ -133,7 +133,7 @@ fn collect_unsafe_exprs<'tcx>( ty::FnPtr(sig_tys, hdr) => sig_tys.with(hdr), _ => return Continue(Descend::Yes), }; - if sig.safety() == Safety::Unsafe { + if sig.safety().is_unsafe() { unsafe_ops.push(("unsafe function call occurs here", expr.span)); } }, @@ -144,7 +144,7 @@ fn collect_unsafe_exprs<'tcx>( .type_dependent_def_id(expr.hir_id) .map(|def_id| cx.tcx.fn_sig(def_id)) { - if sig.skip_binder().safety() == Safety::Unsafe { + if sig.skip_binder().safety().is_unsafe() { unsafe_ops.push(("unsafe method call occurs here", expr.span)); } } diff --git a/clippy_lints/src/new_without_default.rs b/clippy_lints/src/new_without_default.rs index b60fea3f03e..abdce69e764 100644 --- a/clippy_lints/src/new_without_default.rs +++ b/clippy_lints/src/new_without_default.rs @@ -75,7 +75,7 @@ impl<'tcx> LateLintPass<'tcx> for NewWithoutDefault { if let hir::ImplItemKind::Fn(ref sig, _) = impl_item.kind { let name = impl_item.ident.name; let id = impl_item.owner_id; - if sig.header.safety == hir::Safety::Unsafe { + if sig.header.safety.is_unsafe() { // can't be implemented for unsafe new return; } diff --git a/clippy_lints/src/ptr.rs b/clippy_lints/src/ptr.rs index dec4c18a309..44a8789462b 100644 --- a/clippy_lints/src/ptr.rs +++ b/clippy_lints/src/ptr.rs @@ -8,7 +8,7 @@ use rustc_hir::hir_id::{HirId, HirIdMap}; use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{ self as hir, AnonConst, BinOpKind, BindingMode, Body, Expr, ExprKind, FnRetTy, FnSig, GenericArg, ImplItemKind, - ItemKind, Lifetime, Mutability, Node, Param, PatKind, QPath, Safety, TraitFn, TraitItem, TraitItemKind, TyKind, + ItemKind, Lifetime, Mutability, Node, Param, PatKind, QPath, TraitFn, TraitItem, TraitItemKind, TyKind, }; use rustc_infer::infer::TyCtxtInferExt; use rustc_infer::traits::{Obligation, ObligationCause}; @@ -541,7 +541,7 @@ fn check_mut_from_ref<'tcx>(cx: &LateContext<'tcx>, sig: &FnSig<'_>, body: Optio .collect(); if let Some(args) = args && !args.is_empty() - && body.is_none_or(|body| sig.header.safety == Safety::Unsafe || contains_unsafe_block(cx, body.value)) + && body.is_none_or(|body| sig.header.safety.is_unsafe() || contains_unsafe_block(cx, body.value)) { span_lint_and_then( cx, diff --git a/clippy_lints/src/undocumented_unsafe_blocks.rs b/clippy_lints/src/undocumented_unsafe_blocks.rs index b79e59f857b..45d730985bb 100644 --- a/clippy_lints/src/undocumented_unsafe_blocks.rs +++ b/clippy_lints/src/undocumented_unsafe_blocks.rs @@ -203,7 +203,7 @@ impl<'tcx> LateLintPass<'tcx> for UndocumentedUnsafeBlocks { let item_has_safety_comment = item_has_safety_comment(cx, item); match (&item.kind, item_has_safety_comment) { // lint unsafe impl without safety comment - (ItemKind::Impl(impl_), HasSafetyComment::No) if impl_.safety == hir::Safety::Unsafe => { + (ItemKind::Impl(impl_), HasSafetyComment::No) if impl_.safety.is_unsafe() => { if !is_lint_allowed(cx, UNDOCUMENTED_UNSAFE_BLOCKS, item.hir_id()) && !is_unsafe_from_proc_macro(cx, item.span) { @@ -227,7 +227,7 @@ impl<'tcx> LateLintPass<'tcx> for UndocumentedUnsafeBlocks { } }, // lint safe impl with unnecessary safety comment - (ItemKind::Impl(impl_), HasSafetyComment::Yes(pos)) if impl_.safety == hir::Safety::Safe => { + (ItemKind::Impl(impl_), HasSafetyComment::Yes(pos)) if impl_.safety.is_safe() => { if !is_lint_allowed(cx, UNNECESSARY_SAFETY_COMMENT, item.hir_id()) { let (span, help_span) = mk_spans(pos); diff --git a/clippy_utils/src/check_proc_macro.rs b/clippy_utils/src/check_proc_macro.rs index 3269bf758ac..b71b53ea3bb 100644 --- a/clippy_utils/src/check_proc_macro.rs +++ b/clippy_utils/src/check_proc_macro.rs @@ -373,7 +373,7 @@ fn ty_search_pat(ty: &Ty<'_>) -> (Pat, Pat) { TyKind::Ptr(MutTy { ty, .. }) => (Pat::Str("*"), ty_search_pat(ty).1), TyKind::Ref(_, MutTy { ty, .. }) => (Pat::Str("&"), ty_search_pat(ty).1), TyKind::BareFn(bare_fn) => ( - if bare_fn.safety == Safety::Unsafe { + if bare_fn.safety.is_unsafe() { Pat::Str("unsafe") } else if bare_fn.abi != Abi::Rust { Pat::Str("extern") diff --git a/clippy_utils/src/ty.rs b/clippy_utils/src/ty.rs index 260d1b801e3..bc3c3ca5c21 100644 --- a/clippy_utils/src/ty.rs +++ b/clippy_utils/src/ty.rs @@ -9,7 +9,7 @@ use rustc_data_structures::fx::{FxHashMap, FxHashSet}; use rustc_hir as hir; use rustc_hir::def::{CtorKind, CtorOf, DefKind, Res}; use rustc_hir::def_id::DefId; -use rustc_hir::{Expr, FnDecl, LangItem, Safety, TyKind}; +use rustc_hir::{Expr, FnDecl, LangItem, TyKind}; use rustc_infer::infer::TyCtxtInferExt; use rustc_lint::LateContext; use rustc_middle::mir::ConstValue; @@ -531,7 +531,7 @@ pub fn peel_mid_ty_refs_is_mutable(ty: Ty<'_>) -> (Ty<'_>, usize, Mutability) { /// Returns `true` if the given type is an `unsafe` function. pub fn type_is_unsafe_function<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { match ty.kind() { - ty::FnDef(..) | ty::FnPtr(..) => ty.fn_sig(cx.tcx).safety() == Safety::Unsafe, + ty::FnDef(..) | ty::FnPtr(..) => ty.fn_sig(cx.tcx).safety().is_unsafe(), _ => false, } } diff --git a/clippy_utils/src/visitors.rs b/clippy_utils/src/visitors.rs index 351e619d7b1..b3d998fbc52 100644 --- a/clippy_utils/src/visitors.rs +++ b/clippy_utils/src/visitors.rs @@ -7,7 +7,7 @@ use rustc_hir::def::{CtorKind, DefKind, Res}; use rustc_hir::intravisit::{self, Visitor, walk_block, walk_expr}; use rustc_hir::{ AnonConst, Arm, Block, BlockCheckMode, Body, BodyId, Expr, ExprKind, HirId, ItemId, ItemKind, LetExpr, Pat, QPath, - Safety, Stmt, UnOp, UnsafeSource, StructTailExpr, + Stmt, UnOp, UnsafeSource, StructTailExpr, }; use rustc_lint::LateContext; use rustc_middle::hir::nested_filter; @@ -426,15 +426,15 @@ pub fn is_expr_unsafe<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> bool { .cx .typeck_results() .type_dependent_def_id(e.hir_id) - .is_some_and(|id| self.cx.tcx.fn_sig(id).skip_binder().safety() == Safety::Unsafe) => + .is_some_and(|id| self.cx.tcx.fn_sig(id).skip_binder().safety().is_unsafe()) => { ControlFlow::Break(()) }, ExprKind::Call(func, _) => match *self.cx.typeck_results().expr_ty(func).peel_refs().kind() { - ty::FnDef(id, _) if self.cx.tcx.fn_sig(id).skip_binder().safety() == Safety::Unsafe => { + ty::FnDef(id, _) if self.cx.tcx.fn_sig(id).skip_binder().safety().is_unsafe() => { ControlFlow::Break(()) }, - ty::FnPtr(_, hdr) if hdr.safety == Safety::Unsafe => ControlFlow::Break(()), + ty::FnPtr(_, hdr) if hdr.safety.is_unsafe() => ControlFlow::Break(()), _ => walk_expr(self, e), }, ExprKind::Path(ref p) @@ -458,7 +458,7 @@ pub fn is_expr_unsafe<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> bool { } fn visit_nested_item(&mut self, id: ItemId) -> Self::Result { if let ItemKind::Impl(i) = &self.cx.tcx.hir().item(id).kind - && i.safety == Safety::Unsafe + && i.safety.is_unsafe() { ControlFlow::Break(()) } else { -- cgit 1.4.1-3-g733a5 From e7c27c67748717f85d4934dc0034aff95ffb6121 Mon Sep 17 00:00:00 2001 From: lapla-cogito Date: Sun, 15 Dec 2024 20:28:38 +0900 Subject: correct suggestion for must_use_unit when there are multiple attributes --- clippy_lints/src/functions/must_use.rs | 58 +++++++++++++++++++++++++++------- tests/ui/must_use_unit.fixed | 6 ++++ tests/ui/must_use_unit.rs | 6 ++++ tests/ui/must_use_unit.stderr | 18 ++++++++++- 4 files changed, 75 insertions(+), 13 deletions(-) diff --git a/clippy_lints/src/functions/must_use.rs b/clippy_lints/src/functions/must_use.rs index 175d92d2d79..80813d3ccf1 100644 --- a/clippy_lints/src/functions/must_use.rs +++ b/clippy_lints/src/functions/must_use.rs @@ -29,7 +29,7 @@ pub(super) fn check_item<'tcx>(cx: &LateContext<'tcx>, item: &'tcx hir::Item<'_> let is_public = cx.effective_visibilities.is_exported(item.owner_id.def_id); let fn_header_span = item.span.with_hi(sig.decl.output.span().hi()); if let Some(attr) = attr { - check_needless_must_use(cx, sig.decl, item.owner_id, item.span, fn_header_span, attr, sig); + check_needless_must_use(cx, sig.decl, item.owner_id, item.span, fn_header_span, attr, attrs, sig); } else if is_public && !is_proc_macro(attrs) && !attrs.iter().any(|a| a.has_name(sym::no_mangle)) { check_must_use_candidate( cx, @@ -51,7 +51,7 @@ pub(super) fn check_impl_item<'tcx>(cx: &LateContext<'tcx>, item: &'tcx hir::Imp let attrs = cx.tcx.hir().attrs(item.hir_id()); let attr = cx.tcx.get_attr(item.owner_id, sym::must_use); if let Some(attr) = attr { - check_needless_must_use(cx, sig.decl, item.owner_id, item.span, fn_header_span, attr, sig); + check_needless_must_use(cx, sig.decl, item.owner_id, item.span, fn_header_span, attr, attrs, sig); } else if is_public && !is_proc_macro(attrs) && trait_ref_of_method(cx, item.owner_id.def_id).is_none() { check_must_use_candidate( cx, @@ -74,7 +74,7 @@ pub(super) fn check_trait_item<'tcx>(cx: &LateContext<'tcx>, item: &'tcx hir::Tr let attrs = cx.tcx.hir().attrs(item.hir_id()); let attr = cx.tcx.get_attr(item.owner_id, sym::must_use); if let Some(attr) = attr { - check_needless_must_use(cx, sig.decl, item.owner_id, item.span, fn_header_span, attr, sig); + check_needless_must_use(cx, sig.decl, item.owner_id, item.span, fn_header_span, attr, attrs, sig); } else if let hir::TraitFn::Provided(eid) = *eid { let body = cx.tcx.hir().body(eid); if attr.is_none() && is_public && !is_proc_macro(attrs) { @@ -92,6 +92,7 @@ pub(super) fn check_trait_item<'tcx>(cx: &LateContext<'tcx>, item: &'tcx hir::Tr } } +#[allow(clippy::too_many_arguments)] fn check_needless_must_use( cx: &LateContext<'_>, decl: &hir::FnDecl<'_>, @@ -99,21 +100,54 @@ fn check_needless_must_use( item_span: Span, fn_header_span: Span, attr: &Attribute, + attrs: &[Attribute], sig: &FnSig<'_>, ) { if in_external_macro(cx.sess(), item_span) { return; } if returns_unit(decl) { - span_lint_and_then( - cx, - MUST_USE_UNIT, - fn_header_span, - "this unit-returning function has a `#[must_use]` attribute", - |diag| { - diag.span_suggestion(attr.span, "remove the attribute", "", Applicability::MachineApplicable); - }, - ); + if attrs.len() == 1 { + span_lint_and_then( + cx, + MUST_USE_UNIT, + fn_header_span, + "this unit-returning function has a `#[must_use]` attribute", + |diag| { + diag.span_suggestion(attr.span, "remove the attribute", "", Applicability::MachineApplicable); + }, + ); + } else { + // When there are multiple attributes, it is not sufficient to simply make `must_use` empty, see + // issue #12320. + span_lint_and_then( + cx, + MUST_USE_UNIT, + fn_header_span, + "this unit-returning function has a `#[must_use]` attribute", + |diag| { + let mut attrs_without_must_use = attrs.to_vec(); + attrs_without_must_use.retain(|a| a.id != attr.id); + let sugg_str = attrs_without_must_use + .iter() + .map(|a| { + if a.value_str().is_none() { + return a.name_or_empty().to_string(); + } + format!("{} = \"{}\"", a.name_or_empty(), a.value_str().unwrap()) + }) + .collect::>() + .join(", "); + + diag.span_suggestion( + attrs[0].span.with_hi(attrs[attrs.len() - 1].span.hi()), + "change these attributes to", + sugg_str, + Applicability::MachineApplicable, + ); + }, + ); + } } else if attr.value_str().is_none() && is_must_use_ty(cx, return_ty(cx, item_id)) { // Ignore async functions unless Future::Output type is a must_use type if sig.header.is_async() { diff --git a/tests/ui/must_use_unit.fixed b/tests/ui/must_use_unit.fixed index f255cb66652..b92d9379c90 100644 --- a/tests/ui/must_use_unit.fixed +++ b/tests/ui/must_use_unit.fixed @@ -23,3 +23,9 @@ fn main() { fn foo() {} ); } + +#[cfg_attr(all(), deprecated)] +fn issue_12320() {} + +#[cfg_attr(all(), deprecated, doc = "foo")] +fn issue_12320_2() {} diff --git a/tests/ui/must_use_unit.rs b/tests/ui/must_use_unit.rs index 1305910ed0e..c77e7282750 100644 --- a/tests/ui/must_use_unit.rs +++ b/tests/ui/must_use_unit.rs @@ -26,3 +26,9 @@ fn main() { fn foo() {} ); } + +#[cfg_attr(all(), must_use, deprecated)] +fn issue_12320() {} + +#[cfg_attr(all(), deprecated, doc = "foo", must_use)] +fn issue_12320_2() {} diff --git a/tests/ui/must_use_unit.stderr b/tests/ui/must_use_unit.stderr index c2ee2edda7d..b435568deea 100644 --- a/tests/ui/must_use_unit.stderr +++ b/tests/ui/must_use_unit.stderr @@ -25,5 +25,21 @@ LL | #[must_use = "With note"] LL | pub fn must_use_with_note() {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ -error: aborting due to 3 previous errors +error: this unit-returning function has a `#[must_use]` attribute + --> tests/ui/must_use_unit.rs:31:1 + | +LL | #[cfg_attr(all(), must_use, deprecated)] + | -------------------- help: change these attributes to: `deprecated` +LL | fn issue_12320() {} + | ^^^^^^^^^^^^^^^^ + +error: this unit-returning function has a `#[must_use]` attribute + --> tests/ui/must_use_unit.rs:34:1 + | +LL | #[cfg_attr(all(), deprecated, doc = "foo", must_use)] + | --------------------------------- help: change these attributes to: `deprecated, doc = "foo"` +LL | fn issue_12320_2() {} + | ^^^^^^^^^^^^^^^^^^ + +error: aborting due to 5 previous errors -- cgit 1.4.1-3-g733a5 From 028d87b01883aaa40d55892ba6fb1191d7a5a94d Mon Sep 17 00:00:00 2001 From: Philipp Krones Date: Sun, 15 Dec 2024 16:49:23 +0100 Subject: Bump nightly version -> 2024-12-15 --- clippy_utils/README.md | 2 +- rust-toolchain | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/clippy_utils/README.md b/clippy_utils/README.md index 61476a82ba0..395c4a23e76 100644 --- a/clippy_utils/README.md +++ b/clippy_utils/README.md @@ -8,7 +8,7 @@ This crate is only guaranteed to build with this `nightly` toolchain: ``` -nightly-2024-11-28 +nightly-2024-12-15 ``` diff --git a/rust-toolchain b/rust-toolchain index fb159ca2ae0..874893691c0 100644 --- a/rust-toolchain +++ b/rust-toolchain @@ -1,6 +1,6 @@ [toolchain] # begin autogenerated nightly -channel = "nightly-2024-11-28" +channel = "nightly-2024-12-15" # end autogenerated nightly components = ["cargo", "llvm-tools", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"] profile = "minimal" -- cgit 1.4.1-3-g733a5 From f332026bc750db559f4ac204a8fe24d5029a9710 Mon Sep 17 00:00:00 2001 From: Oli Scherer Date: Mon, 2 Dec 2024 11:27:57 +0000 Subject: Rename `value` field to `expr` to simplify later commits' diffs --- clippy_lints/src/attrs/should_panic_without_expect.rs | 2 +- clippy_lints/src/doc/include_in_doc_without_cfg.rs | 2 +- clippy_lints/src/large_include_file.rs | 2 +- clippy_utils/src/ast_utils.rs | 4 ++-- 4 files changed, 5 insertions(+), 5 deletions(-) diff --git a/clippy_lints/src/attrs/should_panic_without_expect.rs b/clippy_lints/src/attrs/should_panic_without_expect.rs index 97cffeb098e..1d6b3388e59 100644 --- a/clippy_lints/src/attrs/should_panic_without_expect.rs +++ b/clippy_lints/src/attrs/should_panic_without_expect.rs @@ -9,7 +9,7 @@ use rustc_span::sym; pub(super) fn check(cx: &EarlyContext<'_>, attr: &Attribute) { if let AttrKind::Normal(normal_attr) = &attr.kind { - if let AttrArgs::Eq { value: AttrArgsEq::Ast(_), .. } = &normal_attr.item.args { + if let AttrArgs::Eq { expr: AttrArgsEq::Ast(_), .. } = &normal_attr.item.args { // `#[should_panic = ".."]` found, good return; } diff --git a/clippy_lints/src/doc/include_in_doc_without_cfg.rs b/clippy_lints/src/doc/include_in_doc_without_cfg.rs index 2182689f985..f2886164a46 100644 --- a/clippy_lints/src/doc/include_in_doc_without_cfg.rs +++ b/clippy_lints/src/doc/include_in_doc_without_cfg.rs @@ -12,7 +12,7 @@ pub fn check(cx: &LateContext<'_>, attrs: &[Attribute]) { if !attr.span.from_expansion() && let AttrKind::Normal(ref normal) = attr.kind && normal.item.path == sym::doc - && let AttrArgs::Eq { value: AttrArgsEq::Hir(ref meta), .. } = normal.item.args + && let AttrArgs::Eq { expr: AttrArgsEq::Hir(ref meta), .. } = normal.item.args && !attr.span.contains(meta.span) // Since the `include_str` is already expanded at this point, we can only take the // whole attribute snippet and then modify for our suggestion. diff --git a/clippy_lints/src/large_include_file.rs b/clippy_lints/src/large_include_file.rs index b38e362410e..a0657a233c1 100644 --- a/clippy_lints/src/large_include_file.rs +++ b/clippy_lints/src/large_include_file.rs @@ -96,7 +96,7 @@ impl LateLintPass<'_> for LargeIncludeFile { && let AttrKind::Normal(ref normal) = attr.kind && let Some(doc) = attr.doc_str() && doc.as_str().len() as u64 > self.max_file_size - && let AttrArgs::Eq { value: AttrArgsEq::Hir(ref meta), .. } = normal.item.args + && let AttrArgs::Eq { expr: AttrArgsEq::Hir(ref meta), .. } = normal.item.args && !attr.span.contains(meta.span) // Since the `include_str` is already expanded at this point, we can only take the // whole attribute snippet and then modify for our suggestion. diff --git a/clippy_utils/src/ast_utils.rs b/clippy_utils/src/ast_utils.rs index 12074dd16e6..6df0748c117 100644 --- a/clippy_utils/src/ast_utils.rs +++ b/clippy_utils/src/ast_utils.rs @@ -872,8 +872,8 @@ pub fn eq_attr_args(l: &AttrArgs, r: &AttrArgs) -> bool { match (l, r) { (Empty, Empty) => true, (Delimited(la), Delimited(ra)) => eq_delim_args(la, ra), - (Eq { value: AttrArgsEq::Ast(le), .. }, Eq{ value: AttrArgsEq::Ast(re), .. }) => eq_expr(le, re), - (Eq { value: AttrArgsEq::Hir(ll), .. }, Eq{ value: AttrArgsEq::Hir(rl), .. }) => ll.kind == rl.kind, + (Eq { expr: AttrArgsEq::Ast(le), .. }, Eq{ expr: AttrArgsEq::Ast(re), .. }) => eq_expr(le, re), + (Eq { expr: AttrArgsEq::Hir(ll), .. }, Eq{ expr: AttrArgsEq::Hir(rl), .. }) => ll.kind == rl.kind, _ => false, } } -- cgit 1.4.1-3-g733a5 From 6dfa37f02a86b4474fbae70e724f7fd6c9f32985 Mon Sep 17 00:00:00 2001 From: Jonathan Dönszelmann Date: Thu, 17 Oct 2024 01:14:01 +0200 Subject: Add hir::Attribute --- clippy_lints/src/attrs/inline_always.rs | 2 +- .../src/attrs/should_panic_without_expect.rs | 4 +- clippy_lints/src/cognitive_complexity.rs | 3 +- clippy_lints/src/doc/empty_line_after.rs | 4 +- clippy_lints/src/doc/include_in_doc_without_cfg.rs | 10 ++-- clippy_lints/src/doc/mod.rs | 3 +- clippy_lints/src/doc/suspicious_doc_comments.rs | 5 +- .../src/doc/too_long_first_doc_paragraph.rs | 3 +- clippy_lints/src/functions/must_use.rs | 3 +- clippy_lints/src/large_include_file.rs | 8 +-- clippy_lints/src/macro_use.rs | 3 +- clippy_lints/src/matches/match_like_matches.rs | 4 +- clippy_lints/src/missing_doc.rs | 16 +++--- clippy_lints/src/missing_inline.rs | 4 +- clippy_lints/src/needless_pass_by_value.rs | 5 +- clippy_utils/src/ast_utils.rs | 3 +- clippy_utils/src/attrs.rs | 58 +++++++++++----------- clippy_utils/src/lib.rs | 31 ++++++------ clippy_utils/src/msrvs.rs | 16 +++--- 19 files changed, 90 insertions(+), 95 deletions(-) diff --git a/clippy_lints/src/attrs/inline_always.rs b/clippy_lints/src/attrs/inline_always.rs index d41bb580c6c..2325f914b0b 100644 --- a/clippy_lints/src/attrs/inline_always.rs +++ b/clippy_lints/src/attrs/inline_always.rs @@ -1,7 +1,7 @@ use super::INLINE_ALWAYS; use super::utils::is_word; use clippy_utils::diagnostics::span_lint; -use rustc_ast::Attribute; +use rustc_hir::Attribute; use rustc_lint::LateContext; use rustc_span::symbol::Symbol; use rustc_span::{Span, sym}; diff --git a/clippy_lints/src/attrs/should_panic_without_expect.rs b/clippy_lints/src/attrs/should_panic_without_expect.rs index 1d6b3388e59..b4ed8a68a32 100644 --- a/clippy_lints/src/attrs/should_panic_without_expect.rs +++ b/clippy_lints/src/attrs/should_panic_without_expect.rs @@ -2,14 +2,14 @@ use super::{Attribute, SHOULD_PANIC_WITHOUT_EXPECT}; use clippy_utils::diagnostics::span_lint_and_sugg; use rustc_ast::token::{Token, TokenKind}; use rustc_ast::tokenstream::TokenTree; -use rustc_ast::{AttrArgs, AttrArgsEq, AttrKind}; +use rustc_ast::{AttrArgs, AttrKind}; use rustc_errors::Applicability; use rustc_lint::EarlyContext; use rustc_span::sym; pub(super) fn check(cx: &EarlyContext<'_>, attr: &Attribute) { if let AttrKind::Normal(normal_attr) = &attr.kind { - if let AttrArgs::Eq { expr: AttrArgsEq::Ast(_), .. } = &normal_attr.item.args { + if let AttrArgs::Eq { .. } = &normal_attr.item.args { // `#[should_panic = ".."]` found, good return; } diff --git a/clippy_lints/src/cognitive_complexity.rs b/clippy_lints/src/cognitive_complexity.rs index 383fae7992b..a1ff20dee72 100644 --- a/clippy_lints/src/cognitive_complexity.rs +++ b/clippy_lints/src/cognitive_complexity.rs @@ -5,9 +5,8 @@ use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::visitors::for_each_expr_without_closures; use clippy_utils::{LimitStack, get_async_fn_body, is_async_fn}; use core::ops::ControlFlow; -use rustc_ast::ast::Attribute; use rustc_hir::intravisit::FnKind; -use rustc_hir::{Body, Expr, ExprKind, FnDecl}; +use rustc_hir::{Attribute, Body, Expr, ExprKind, FnDecl}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_session::impl_lint_pass; use rustc_span::def_id::LocalDefId; diff --git a/clippy_lints/src/doc/empty_line_after.rs b/clippy_lints/src/doc/empty_line_after.rs index de7a2c2433f..099194d4e74 100644 --- a/clippy_lints/src/doc/empty_line_after.rs +++ b/clippy_lints/src/doc/empty_line_after.rs @@ -2,10 +2,10 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::{SpanRangeExt, snippet_indent}; use clippy_utils::tokenize_with_text; use itertools::Itertools; +use rustc_ast::AttrStyle; use rustc_ast::token::CommentKind; -use rustc_ast::{AttrKind, AttrStyle, Attribute}; use rustc_errors::{Applicability, Diag, SuggestionStyle}; -use rustc_hir::{ItemKind, Node}; +use rustc_hir::{AttrKind, Attribute, ItemKind, Node}; use rustc_lexer::TokenKind; use rustc_lint::LateContext; use rustc_span::{BytePos, ExpnKind, InnerSpan, Span, SpanData}; diff --git a/clippy_lints/src/doc/include_in_doc_without_cfg.rs b/clippy_lints/src/doc/include_in_doc_without_cfg.rs index f2886164a46..0bb16a0c77d 100644 --- a/clippy_lints/src/doc/include_in_doc_without_cfg.rs +++ b/clippy_lints/src/doc/include_in_doc_without_cfg.rs @@ -1,18 +1,18 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_opt; -use rustc_ast::{AttrArgs, AttrArgsEq, AttrKind, AttrStyle, Attribute}; +use rustc_ast::{AttrStyle}; use rustc_errors::Applicability; use rustc_lint::LateContext; -use rustc_span::sym; +use rustc_hir::{Attribute, AttrKind, AttrArgs}; use super::DOC_INCLUDE_WITHOUT_CFG; pub fn check(cx: &LateContext<'_>, attrs: &[Attribute]) { for attr in attrs { if !attr.span.from_expansion() - && let AttrKind::Normal(ref normal) = attr.kind - && normal.item.path == sym::doc - && let AttrArgs::Eq { expr: AttrArgsEq::Hir(ref meta), .. } = normal.item.args + && let AttrKind::Normal(ref item) = attr.kind + && attr.doc_str().is_some() + && let AttrArgs::Eq { expr: meta, .. } = &item.args && !attr.span.contains(meta.span) // Since the `include_str` is already expanded at this point, we can only take the // whole attribute snippet and then modify for our suggestion. diff --git a/clippy_lints/src/doc/mod.rs b/clippy_lints/src/doc/mod.rs index 88ac871acf6..f65acd7978a 100644 --- a/clippy_lints/src/doc/mod.rs +++ b/clippy_lints/src/doc/mod.rs @@ -16,10 +16,9 @@ use pulldown_cmark::Event::{ }; use pulldown_cmark::Tag::{BlockQuote, CodeBlock, FootnoteDefinition, Heading, Item, Link, Paragraph}; use pulldown_cmark::{BrokenLink, CodeBlockKind, CowStr, Options, TagEnd}; -use rustc_ast::ast::Attribute; use rustc_data_structures::fx::FxHashSet; use rustc_hir::intravisit::{self, Visitor}; -use rustc_hir::{AnonConst, Expr, ImplItemKind, ItemKind, Node, Safety, TraitItemKind}; +use rustc_hir::{AnonConst, Attribute, Expr, ImplItemKind, ItemKind, Node, Safety, TraitItemKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::hir::nested_filter; use rustc_middle::lint::in_external_macro; diff --git a/clippy_lints/src/doc/suspicious_doc_comments.rs b/clippy_lints/src/doc/suspicious_doc_comments.rs index f6f942b10ca..84393213e6f 100644 --- a/clippy_lints/src/doc/suspicious_doc_comments.rs +++ b/clippy_lints/src/doc/suspicious_doc_comments.rs @@ -1,7 +1,8 @@ use clippy_utils::diagnostics::span_lint_and_then; +use rustc_ast::AttrStyle; use rustc_ast::token::CommentKind; -use rustc_ast::{AttrKind, AttrStyle, Attribute}; use rustc_errors::Applicability; +use rustc_hir::Attribute; use rustc_lint::LateContext; use rustc_span::Span; @@ -35,7 +36,7 @@ fn collect_doc_replacements(attrs: &[Attribute]) -> Vec<(Span, String)> { attrs .iter() .filter_map(|attr| { - if let AttrKind::DocComment(com_kind, sym) = attr.kind + if let Some((sym, com_kind)) = attr.doc_str_and_comment_kind() && let AttrStyle::Outer = attr.style && let Some(com) = sym.as_str().strip_prefix('!') { diff --git a/clippy_lints/src/doc/too_long_first_doc_paragraph.rs b/clippy_lints/src/doc/too_long_first_doc_paragraph.rs index 0165d24c7df..0f9ff550853 100644 --- a/clippy_lints/src/doc/too_long_first_doc_paragraph.rs +++ b/clippy_lints/src/doc/too_long_first_doc_paragraph.rs @@ -1,6 +1,5 @@ -use rustc_ast::ast::Attribute; use rustc_errors::Applicability; -use rustc_hir::{Item, ItemKind}; +use rustc_hir::{Attribute, Item, ItemKind}; use rustc_lint::LateContext; use clippy_utils::diagnostics::span_lint_and_then; diff --git a/clippy_lints/src/functions/must_use.rs b/clippy_lints/src/functions/must_use.rs index 175d92d2d79..2b26285429a 100644 --- a/clippy_lints/src/functions/must_use.rs +++ b/clippy_lints/src/functions/must_use.rs @@ -1,9 +1,8 @@ use hir::FnSig; -use rustc_ast::ast::Attribute; use rustc_errors::Applicability; use rustc_hir::def::Res; use rustc_hir::def_id::DefIdSet; -use rustc_hir::{self as hir, QPath}; +use rustc_hir::{self as hir, Attribute, QPath}; use rustc_infer::infer::TyCtxtInferExt; use rustc_lint::{LateContext, LintContext}; use rustc_middle::lint::in_external_macro; diff --git a/clippy_lints/src/large_include_file.rs b/clippy_lints/src/large_include_file.rs index a0657a233c1..66d4c40ab5e 100644 --- a/clippy_lints/src/large_include_file.rs +++ b/clippy_lints/src/large_include_file.rs @@ -2,8 +2,8 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::macros::root_macro_call_first_node; use clippy_utils::source::snippet_opt; -use rustc_ast::{AttrArgs, AttrArgsEq, AttrKind, Attribute, LitKind}; -use rustc_hir::{Expr, ExprKind}; +use rustc_ast::{LitKind}; +use rustc_hir::{Expr, ExprKind, Attribute, AttrArgs, AttrKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; use rustc_span::{Span, sym}; @@ -93,10 +93,10 @@ impl LateLintPass<'_> for LargeIncludeFile { if !attr.span.from_expansion() // Currently, rustc limits the usage of macro at the top-level of attributes, // so we don't need to recurse into each level. - && let AttrKind::Normal(ref normal) = attr.kind + && let AttrKind::Normal(ref item) = attr.kind && let Some(doc) = attr.doc_str() && doc.as_str().len() as u64 > self.max_file_size - && let AttrArgs::Eq { expr: AttrArgsEq::Hir(ref meta), .. } = normal.item.args + && let AttrArgs::Eq { expr: meta, .. } = &item.args && !attr.span.contains(meta.span) // Since the `include_str` is already expanded at this point, we can only take the // whole attribute snippet and then modify for our suggestion. diff --git a/clippy_lints/src/macro_use.rs b/clippy_lints/src/macro_use.rs index 22aa681b681..3c669d94d69 100644 --- a/clippy_lints/src/macro_use.rs +++ b/clippy_lints/src/macro_use.rs @@ -1,7 +1,6 @@ use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::source::snippet; use hir::def::{DefKind, Res}; -use rustc_ast::ast; use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; use rustc_hir as hir; @@ -104,7 +103,7 @@ impl LateLintPass<'_> for MacroUseImports { self.push_unique_macro_pat_ty(cx, item.span); } } - fn check_attribute(&mut self, cx: &LateContext<'_>, attr: &ast::Attribute) { + fn check_attribute(&mut self, cx: &LateContext<'_>, attr: &hir::Attribute) { if attr.span.from_expansion() { self.push_unique_macro(cx, attr.span); } diff --git a/clippy_lints/src/matches/match_like_matches.rs b/clippy_lints/src/matches/match_like_matches.rs index 47472ab831f..223d0dc7656 100644 --- a/clippy_lints/src/matches/match_like_matches.rs +++ b/clippy_lints/src/matches/match_like_matches.rs @@ -2,9 +2,9 @@ use super::REDUNDANT_PATTERN_MATCHING; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_applicability; use clippy_utils::{is_lint_allowed, is_wild, span_contains_comment}; -use rustc_ast::{Attribute, LitKind}; +use rustc_ast::LitKind; use rustc_errors::Applicability; -use rustc_hir::{Arm, BorrowKind, Expr, ExprKind, Pat, PatKind, QPath}; +use rustc_hir::{Arm, Attribute, BorrowKind, Expr, ExprKind, Pat, PatKind, QPath}; use rustc_lint::{LateContext, LintContext}; use rustc_middle::ty; use rustc_span::source_map::Spanned; diff --git a/clippy_lints/src/missing_doc.rs b/clippy_lints/src/missing_doc.rs index 1300c7d1062..b6f49dcc163 100644 --- a/clippy_lints/src/missing_doc.rs +++ b/clippy_lints/src/missing_doc.rs @@ -10,8 +10,9 @@ use clippy_utils::attrs::is_doc_hidden; use clippy_utils::diagnostics::span_lint; use clippy_utils::is_from_proc_macro; use clippy_utils::source::SpanRangeExt; -use rustc_ast::ast::{self, MetaItem, MetaItemKind}; +use rustc_ast::ast::MetaItemInner; use rustc_hir as hir; +use rustc_hir::Attribute; use rustc_hir::def::DefKind; use rustc_hir::def_id::LocalDefId; use rustc_lint::{LateContext, LateLintPass, LintContext}; @@ -67,9 +68,8 @@ impl MissingDoc { *self.doc_hidden_stack.last().expect("empty doc_hidden_stack") } - fn has_include(meta: Option) -> bool { - if let Some(meta) = meta - && let MetaItemKind::List(list) = meta.kind + fn has_include(meta: Option<&[MetaItemInner]>) -> bool { + if let Some(list) = meta && let Some(meta) = list.first() && let Some(name) = meta.ident() { @@ -83,7 +83,7 @@ impl MissingDoc { &self, cx: &LateContext<'_>, def_id: LocalDefId, - attrs: &[ast::Attribute], + attrs: &[Attribute], sp: Span, article: &'static str, desc: &'static str, @@ -129,7 +129,7 @@ impl MissingDoc { let has_doc = attrs .iter() - .any(|a| a.doc_str().is_some() || Self::has_include(a.meta())) + .any(|a| a.doc_str().is_some() || Self::has_include(a.meta_item_list().as_deref())) || matches!(self.search_span(sp), Some(span) if span_to_snippet_contains_docs(cx, span)); if !has_doc { @@ -172,12 +172,12 @@ impl MissingDoc { impl_lint_pass!(MissingDoc => [MISSING_DOCS_IN_PRIVATE_ITEMS]); impl<'tcx> LateLintPass<'tcx> for MissingDoc { - fn check_attributes(&mut self, _: &LateContext<'tcx>, attrs: &'tcx [ast::Attribute]) { + fn check_attributes(&mut self, _: &LateContext<'tcx>, attrs: &'tcx [Attribute]) { let doc_hidden = self.doc_hidden() || is_doc_hidden(attrs); self.doc_hidden_stack.push(doc_hidden); } - fn check_attributes_post(&mut self, _: &LateContext<'tcx>, _: &'tcx [ast::Attribute]) { + fn check_attributes_post(&mut self, _: &LateContext<'tcx>, _: &'tcx [Attribute]) { self.doc_hidden_stack.pop().expect("empty doc_hidden_stack"); } diff --git a/clippy_lints/src/missing_inline.rs b/clippy_lints/src/missing_inline.rs index e587d695c84..11ff779d531 100644 --- a/clippy_lints/src/missing_inline.rs +++ b/clippy_lints/src/missing_inline.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint; -use rustc_ast::ast; use rustc_hir as hir; +use rustc_hir::Attribute; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::ty::AssocItemContainer; use rustc_session::declare_lint_pass; @@ -63,7 +63,7 @@ declare_clippy_lint! { "detects missing `#[inline]` attribute for public callables (functions, trait methods, methods...)" } -fn check_missing_inline_attrs(cx: &LateContext<'_>, attrs: &[ast::Attribute], sp: Span, desc: &'static str) { +fn check_missing_inline_attrs(cx: &LateContext<'_>, attrs: &[Attribute], sp: Span, desc: &'static str) { let has_inline = attrs.iter().any(|a| a.has_name(sym::inline)); if !has_inline { span_lint( diff --git a/clippy_lints/src/needless_pass_by_value.rs b/clippy_lints/src/needless_pass_by_value.rs index 6f3f371a68d..30846fb46ac 100644 --- a/clippy_lints/src/needless_pass_by_value.rs +++ b/clippy_lints/src/needless_pass_by_value.rs @@ -5,12 +5,11 @@ use clippy_utils::source::{SpanRangeExt, snippet}; use clippy_utils::ty::{ implements_trait, implements_trait_with_env_from_iter, is_copy, is_type_diagnostic_item, is_type_lang_item, }; -use rustc_ast::ast::Attribute; use rustc_errors::{Applicability, Diag}; use rustc_hir::intravisit::FnKind; use rustc_hir::{ - BindingMode, Body, FnDecl, GenericArg, HirId, HirIdSet, Impl, ItemKind, LangItem, Mutability, Node, PatKind, QPath, - TyKind, + Attribute, BindingMode, Body, FnDecl, GenericArg, HirId, HirIdSet, Impl, ItemKind, LangItem, Mutability, Node, + PatKind, QPath, TyKind, }; use rustc_hir_typeck::expr_use_visitor as euv; use rustc_lint::{LateContext, LateLintPass}; diff --git a/clippy_utils/src/ast_utils.rs b/clippy_utils/src/ast_utils.rs index 6df0748c117..623d9c76086 100644 --- a/clippy_utils/src/ast_utils.rs +++ b/clippy_utils/src/ast_utils.rs @@ -872,8 +872,7 @@ pub fn eq_attr_args(l: &AttrArgs, r: &AttrArgs) -> bool { match (l, r) { (Empty, Empty) => true, (Delimited(la), Delimited(ra)) => eq_delim_args(la, ra), - (Eq { expr: AttrArgsEq::Ast(le), .. }, Eq{ expr: AttrArgsEq::Ast(re), .. }) => eq_expr(le, re), - (Eq { expr: AttrArgsEq::Hir(ll), .. }, Eq{ expr: AttrArgsEq::Hir(rl), .. }) => ll.kind == rl.kind, + (Eq { eq_span: _, expr: le }, Eq { eq_span: _, expr: re }) => eq_expr(le, re), _ => false, } } diff --git a/clippy_utils/src/attrs.rs b/clippy_utils/src/attrs.rs index b2a6657baad..922afffb876 100644 --- a/clippy_utils/src/attrs.rs +++ b/clippy_utils/src/attrs.rs @@ -1,4 +1,5 @@ -use rustc_ast::{ast, attr}; +use rustc_ast::attr; +use rustc_ast::attr::AttributeExt; use rustc_errors::Applicability; use rustc_lexer::TokenKind; use rustc_lint::LateContext; @@ -51,33 +52,31 @@ impl LimitStack { pub fn limit(&self) -> u64 { *self.stack.last().expect("there should always be a value in the stack") } - pub fn push_attrs(&mut self, sess: &Session, attrs: &[ast::Attribute], name: &'static str) { + pub fn push_attrs(&mut self, sess: &Session, attrs: &[impl AttributeExt], name: &'static str) { let stack = &mut self.stack; parse_attrs(sess, attrs, name, |val| stack.push(val)); } - pub fn pop_attrs(&mut self, sess: &Session, attrs: &[ast::Attribute], name: &'static str) { + pub fn pop_attrs(&mut self, sess: &Session, attrs: &[impl AttributeExt], name: &'static str) { let stack = &mut self.stack; parse_attrs(sess, attrs, name, |val| assert_eq!(stack.pop(), Some(val))); } } -pub fn get_attr<'a>( +pub fn get_attr<'a, A: AttributeExt + 'a>( sess: &'a Session, - attrs: &'a [ast::Attribute], + attrs: &'a [A], name: &'static str, -) -> impl Iterator { +) -> impl Iterator { attrs.iter().filter(move |attr| { - let attr = if let ast::AttrKind::Normal(ref normal) = attr.kind { - &normal.item - } else { + let Some(attr_segments) = attr.ident_path() else { return false; }; - let attr_segments = &attr.path.segments; - if attr_segments.len() == 2 && attr_segments[0].ident.name == sym::clippy { + + if attr_segments.len() == 2 && attr_segments[0].name == sym::clippy { BUILTIN_ATTRIBUTES .iter() .find_map(|&(builtin_name, ref deprecation_status)| { - if attr_segments[1].ident.name.as_str() == builtin_name { + if attr_segments[1].name.as_str() == builtin_name { Some(deprecation_status) } else { None @@ -85,14 +84,13 @@ pub fn get_attr<'a>( }) .map_or_else( || { - sess.dcx() - .span_err(attr_segments[1].ident.span, "usage of unknown attribute"); + sess.dcx().span_err(attr_segments[1].span, "usage of unknown attribute"); false }, |deprecation_status| { let mut diag = sess .dcx() - .struct_span_err(attr_segments[1].ident.span, "usage of deprecated attribute"); + .struct_span_err(attr_segments[1].span, "usage of deprecated attribute"); match *deprecation_status { DeprecationStatus::Deprecated => { diag.emit(); @@ -100,7 +98,7 @@ pub fn get_attr<'a>( }, DeprecationStatus::Replaced(new_name) => { diag.span_suggestion( - attr_segments[1].ident.span, + attr_segments[1].span, "consider using", new_name, Applicability::MachineApplicable, @@ -110,7 +108,7 @@ pub fn get_attr<'a>( }, DeprecationStatus::None => { diag.cancel(); - attr_segments[1].ident.name.as_str() == name + attr_segments[1].as_str() == name }, } }, @@ -121,31 +119,31 @@ pub fn get_attr<'a>( }) } -fn parse_attrs(sess: &Session, attrs: &[ast::Attribute], name: &'static str, mut f: F) { +fn parse_attrs(sess: &Session, attrs: &[impl AttributeExt], name: &'static str, mut f: F) { for attr in get_attr(sess, attrs, name) { if let Some(ref value) = attr.value_str() { if let Ok(value) = FromStr::from_str(value.as_str()) { f(value); } else { - sess.dcx().span_err(attr.span, "not a number"); + sess.dcx().span_err(attr.span(), "not a number"); } } else { - sess.dcx().span_err(attr.span, "bad clippy attribute"); + sess.dcx().span_err(attr.span(), "bad clippy attribute"); } } } -pub fn get_unique_attr<'a>( +pub fn get_unique_attr<'a, A: AttributeExt>( sess: &'a Session, - attrs: &'a [ast::Attribute], + attrs: &'a [A], name: &'static str, -) -> Option<&'a ast::Attribute> { - let mut unique_attr: Option<&ast::Attribute> = None; +) -> Option<&'a A> { + let mut unique_attr: Option<&A> = None; for attr in get_attr(sess, attrs, name) { if let Some(duplicate) = unique_attr { sess.dcx() - .struct_span_err(attr.span, format!("`{name}` is defined multiple times")) - .with_span_note(duplicate.span, "first definition found here") + .struct_span_err(attr.span(), format!("`{name}` is defined multiple times")) + .with_span_note(duplicate.span(), "first definition found here") .emit(); } else { unique_attr = Some(attr); @@ -156,16 +154,16 @@ pub fn get_unique_attr<'a>( /// Returns true if the attributes contain any of `proc_macro`, /// `proc_macro_derive` or `proc_macro_attribute`, false otherwise -pub fn is_proc_macro(attrs: &[ast::Attribute]) -> bool { - attrs.iter().any(rustc_ast::Attribute::is_proc_macro_attr) +pub fn is_proc_macro(attrs: &[impl AttributeExt]) -> bool { + attrs.iter().any(AttributeExt::is_proc_macro_attr) } /// Returns true if the attributes contain `#[doc(hidden)]` -pub fn is_doc_hidden(attrs: &[ast::Attribute]) -> bool { +pub fn is_doc_hidden(attrs: &[impl AttributeExt]) -> bool { attrs .iter() .filter(|attr| attr.has_name(sym::doc)) - .filter_map(ast::Attribute::meta_item_list) + .filter_map(AttributeExt::meta_item_list) .any(|l| attr::list_contains_name(&l, sym::hidden)) } diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs index 8d48cdd3cbb..96139a08c3d 100644 --- a/clippy_utils/src/lib.rs +++ b/clippy_utils/src/lib.rs @@ -135,13 +135,24 @@ use rustc_middle::hir::nested_filter; #[macro_export] macro_rules! extract_msrv_attr { - ($context:ident) => { - fn check_attributes(&mut self, cx: &rustc_lint::$context<'_>, attrs: &[rustc_ast::ast::Attribute]) { + (LateContext) => { + fn check_attributes(&mut self, cx: &rustc_lint::LateContext<'_>, attrs: &[rustc_hir::Attribute]) { let sess = rustc_lint::LintContext::sess(cx); self.msrv.check_attributes(sess, attrs); } - fn check_attributes_post(&mut self, cx: &rustc_lint::$context<'_>, attrs: &[rustc_ast::ast::Attribute]) { + fn check_attributes_post(&mut self, cx: &rustc_lint::LateContext<'_>, attrs: &[rustc_hir::Attribute]) { + let sess = rustc_lint::LintContext::sess(cx); + self.msrv.check_attributes_post(sess, attrs); + } + }; + (EarlyContext) => { + fn check_attributes(&mut self, cx: &rustc_lint::EarlyContext<'_>, attrs: &[rustc_ast::Attribute]) { + let sess = rustc_lint::LintContext::sess(cx); + self.msrv.check_attributes(sess, attrs); + } + + fn check_attributes_post(&mut self, cx: &rustc_lint::EarlyContext<'_>, attrs: &[rustc_ast::Attribute]) { let sess = rustc_lint::LintContext::sess(cx); self.msrv.check_attributes_post(sess, attrs); } @@ -1912,7 +1923,7 @@ pub fn clip(tcx: TyCtxt<'_>, u: u128, ity: UintTy) -> u128 { (u << amt) >> amt } -pub fn has_attr(attrs: &[ast::Attribute], symbol: Symbol) -> bool { +pub fn has_attr(attrs: &[hir::Attribute], symbol: Symbol) -> bool { attrs.iter().any(|attr| attr.has_name(symbol)) } @@ -2263,21 +2274,13 @@ pub fn std_or_core(cx: &LateContext<'_>) -> Option<&'static str> { pub fn is_no_std_crate(cx: &LateContext<'_>) -> bool { cx.tcx.hir().attrs(hir::CRATE_HIR_ID).iter().any(|attr| { - if let ast::AttrKind::Normal(ref normal) = attr.kind { - normal.item.path == sym::no_std - } else { - false - } + attr.name_or_empty() == sym::no_std }) } pub fn is_no_core_crate(cx: &LateContext<'_>) -> bool { cx.tcx.hir().attrs(hir::CRATE_HIR_ID).iter().any(|attr| { - if let ast::AttrKind::Normal(ref normal) = attr.kind { - normal.item.path == sym::no_core - } else { - false - } + attr.name_or_empty() == sym::no_core }) } diff --git a/clippy_utils/src/msrvs.rs b/clippy_utils/src/msrvs.rs index 1eb7d54e133..5b1c3465d05 100644 --- a/clippy_utils/src/msrvs.rs +++ b/clippy_utils/src/msrvs.rs @@ -1,4 +1,4 @@ -use rustc_ast::Attribute; +use rustc_attr::AttributeExt; use rustc_attr::parse_version; use rustc_session::{RustcVersion, Session}; use rustc_span::{Symbol, sym}; @@ -124,15 +124,15 @@ impl Msrv { self.current().is_none_or(|msrv| msrv >= required) } - fn parse_attr(sess: &Session, attrs: &[Attribute]) -> Option { + fn parse_attr(sess: &Session, attrs: &[impl AttributeExt]) -> Option { let sym_msrv = Symbol::intern("msrv"); let mut msrv_attrs = attrs.iter().filter(|attr| attr.path_matches(&[sym::clippy, sym_msrv])); if let Some(msrv_attr) = msrv_attrs.next() { if let Some(duplicate) = msrv_attrs.last() { sess.dcx() - .struct_span_err(duplicate.span, "`clippy::msrv` is defined multiple times") - .with_span_note(msrv_attr.span, "first definition found here") + .struct_span_err(duplicate.span(), "`clippy::msrv` is defined multiple times") + .with_span_note(msrv_attr.span(), "first definition found here") .emit(); } @@ -142,22 +142,22 @@ impl Msrv { } sess.dcx() - .span_err(msrv_attr.span, format!("`{msrv}` is not a valid Rust version")); + .span_err(msrv_attr.span(), format!("`{msrv}` is not a valid Rust version")); } else { - sess.dcx().span_err(msrv_attr.span, "bad clippy attribute"); + sess.dcx().span_err(msrv_attr.span(), "bad clippy attribute"); } } None } - pub fn check_attributes(&mut self, sess: &Session, attrs: &[Attribute]) { + pub fn check_attributes(&mut self, sess: &Session, attrs: &[impl AttributeExt]) { if let Some(version) = Self::parse_attr(sess, attrs) { self.stack.push(version); } } - pub fn check_attributes_post(&mut self, sess: &Session, attrs: &[Attribute]) { + pub fn check_attributes_post(&mut self, sess: &Session, attrs: &[impl AttributeExt]) { if Self::parse_attr(sess, attrs).is_some() { self.stack.pop(); } -- cgit 1.4.1-3-g733a5 From 7a80f7b790333aed3b456db01d6c3dd26c69d487 Mon Sep 17 00:00:00 2001 From: Lukas Lueg Date: Sun, 15 Sep 2024 18:53:10 +0200 Subject: Initial impl `repr_packed_without_abi` Fixes #13375 --- CHANGELOG.md | 1 + clippy_lints/src/attrs/mod.rs | 41 ++++++++++++++++++++++++++ clippy_lints/src/attrs/repr_attributes.rs | 43 ++++++++++++++++++++++++++++ clippy_lints/src/declared_lints.rs | 1 + clippy_utils/src/msrvs.rs | 1 + tests/ui/default_union_representation.rs | 1 + tests/ui/default_union_representation.stderr | 8 +++--- tests/ui/derive.rs | 1 + tests/ui/derive.stderr | 20 ++++++------- tests/ui/repr_packed_without_abi.rs | 37 ++++++++++++++++++++++++ tests/ui/repr_packed_without_abi.stderr | 35 ++++++++++++++++++++++ tests/ui/trailing_empty_array.rs | 1 + tests/ui/trailing_empty_array.stderr | 22 +++++++------- 13 files changed, 187 insertions(+), 25 deletions(-) create mode 100644 clippy_lints/src/attrs/repr_attributes.rs create mode 100644 tests/ui/repr_packed_without_abi.rs create mode 100644 tests/ui/repr_packed_without_abi.stderr diff --git a/CHANGELOG.md b/CHANGELOG.md index cc966972939..529ab6c20d6 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -5969,6 +5969,7 @@ Released 2018-09-13 [`repeat_once`]: https://rust-lang.github.io/rust-clippy/master/index.html#repeat_once [`repeat_vec_with_capacity`]: https://rust-lang.github.io/rust-clippy/master/index.html#repeat_vec_with_capacity [`replace_consts`]: https://rust-lang.github.io/rust-clippy/master/index.html#replace_consts +[`repr_packed_without_abi`]: https://rust-lang.github.io/rust-clippy/master/index.html#repr_packed_without_abi [`reserve_after_initialization`]: https://rust-lang.github.io/rust-clippy/master/index.html#reserve_after_initialization [`rest_pat_in_fully_bound_structs`]: https://rust-lang.github.io/rust-clippy/master/index.html#rest_pat_in_fully_bound_structs [`result_expect_used`]: https://rust-lang.github.io/rust-clippy/master/index.html#result_expect_used diff --git a/clippy_lints/src/attrs/mod.rs b/clippy_lints/src/attrs/mod.rs index a9766597d50..92efd1a4ddc 100644 --- a/clippy_lints/src/attrs/mod.rs +++ b/clippy_lints/src/attrs/mod.rs @@ -7,6 +7,7 @@ mod duplicated_attributes; mod inline_always; mod mixed_attributes_style; mod non_minimal_cfg; +mod repr_attributes; mod should_panic_without_expect; mod unnecessary_clippy_cfg; mod useless_attribute; @@ -272,6 +273,44 @@ declare_clippy_lint! { "ensures that all `should_panic` attributes specify its expected panic message" } +declare_clippy_lint! { + /// ### What it does + /// Checks for items with `#[repr(packed)]`-attribute without ABI qualification + /// + /// ### Why is this bad? + /// Without qualification, `repr(packed)` implies `repr(Rust)`. The Rust-ABI is inherently unstable. + /// While this is fine as long as the type is accessed correctly within Rust-code, most uses + /// of `#[repr(packed)]` involve FFI and/or data structures specified by network-protocols or + /// other external specifications. In such situations, the unstable Rust-ABI implied in + /// `#[repr(packed)]` may lead to future bugs should the Rust-ABI change. + /// + /// In case you are relying on a well defined and stable memory layout, qualify the type's + /// representation using the `C`-ABI. Otherwise, if the type in question is only ever + /// accessed from Rust-code according to Rust's rules, use the `Rust`-ABI explicitly. + /// + /// ### Example + /// ```no_run + /// #[repr(packed)] + /// struct NetworkPacketHeader { + /// header_length: u8, + /// header_version: u16 + /// } + /// ``` + /// + /// Use instead: + /// ```no_run + /// #[repr(C, packed)] + /// struct NetworkPacketHeader { + /// header_length: u8, + /// header_version: u16 + /// } + /// ``` + #[clippy::version = "1.84.0"] + pub REPR_PACKED_WITHOUT_ABI, + suspicious, + "ensures that `repr(packed)` always comes with a qualified ABI" +} + declare_clippy_lint! { /// ### What it does /// Checks for `any` and `all` combinators in `cfg` with only one condition. @@ -415,6 +454,7 @@ pub struct Attributes { impl_lint_pass!(Attributes => [ INLINE_ALWAYS, + REPR_PACKED_WITHOUT_ABI, ]); impl Attributes { @@ -431,6 +471,7 @@ impl<'tcx> LateLintPass<'tcx> for Attributes { if is_relevant_item(cx, item) { inline_always::check(cx, item.span, item.ident.name, attrs); } + repr_attributes::check(cx, item.span, attrs, &self.msrv); } fn check_impl_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx ImplItem<'_>) { diff --git a/clippy_lints/src/attrs/repr_attributes.rs b/clippy_lints/src/attrs/repr_attributes.rs new file mode 100644 index 00000000000..e55a85b6267 --- /dev/null +++ b/clippy_lints/src/attrs/repr_attributes.rs @@ -0,0 +1,43 @@ +use rustc_ast::Attribute; +use rustc_lint::LateContext; +use rustc_span::{Span, sym}; + +use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs; + +use super::REPR_PACKED_WITHOUT_ABI; + +pub(super) fn check(cx: &LateContext<'_>, item_span: Span, attrs: &[Attribute], msrv: &msrvs::Msrv) { + if msrv.meets(msrvs::REPR_RUST) { + check_packed(cx, item_span, attrs); + } +} + +fn check_packed(cx: &LateContext<'_>, item_span: Span, attrs: &[Attribute]) { + if let Some(items) = attrs.iter().find_map(|attr| { + if attr.ident().is_some_and(|ident| matches!(ident.name, sym::repr)) { + attr.meta_item_list() + } else { + None + } + }) && let Some(packed) = items + .iter() + .find(|item| item.ident().is_some_and(|ident| matches!(ident.name, sym::packed))) + && !items.iter().any(|item| { + item.ident() + .is_some_and(|ident| matches!(ident.name, sym::C | sym::Rust)) + }) + { + span_lint_and_then( + cx, + REPR_PACKED_WITHOUT_ABI, + item_span, + "item uses `packed` representation without ABI-qualification", + |diag| { + diag.warn("unqualified `#[repr(packed)]` defaults to `#[repr(Rust, packed)]`, which has no stable ABI") + .help("qualify the desired ABI explicity via `#[repr(C, packed)]` or `#[repr(Rust, packed)]`") + .span_label(packed.span(), "`packed` representation set here"); + }, + ); + } +} diff --git a/clippy_lints/src/declared_lints.rs b/clippy_lints/src/declared_lints.rs index 304622afe53..d2a8f23b60f 100644 --- a/clippy_lints/src/declared_lints.rs +++ b/clippy_lints/src/declared_lints.rs @@ -55,6 +55,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::attrs::INLINE_ALWAYS_INFO, crate::attrs::MIXED_ATTRIBUTES_STYLE_INFO, crate::attrs::NON_MINIMAL_CFG_INFO, + crate::attrs::REPR_PACKED_WITHOUT_ABI_INFO, crate::attrs::SHOULD_PANIC_WITHOUT_EXPECT_INFO, crate::attrs::UNNECESSARY_CLIPPY_CFG_INFO, crate::attrs::USELESS_ATTRIBUTE_INFO, diff --git a/clippy_utils/src/msrvs.rs b/clippy_utils/src/msrvs.rs index f0381760709..35f552c15a3 100644 --- a/clippy_utils/src/msrvs.rs +++ b/clippy_utils/src/msrvs.rs @@ -24,6 +24,7 @@ msrv_aliases! { 1,80,0 { BOX_INTO_ITER } 1,77,0 { C_STR_LITERALS } 1,76,0 { PTR_FROM_REF, OPTION_RESULT_INSPECT } + 1,74,0 { REPR_RUST } 1,73,0 { MANUAL_DIV_CEIL } 1,71,0 { TUPLE_ARRAY_CONVERSIONS, BUILD_HASHER_HASH_ONE } 1,70,0 { OPTION_RESULT_IS_VARIANT_AND, BINARY_HEAP_RETAIN } diff --git a/tests/ui/default_union_representation.rs b/tests/ui/default_union_representation.rs index 41308b077ba..ba63cde2fa9 100644 --- a/tests/ui/default_union_representation.rs +++ b/tests/ui/default_union_representation.rs @@ -1,5 +1,6 @@ #![feature(transparent_unions)] #![warn(clippy::default_union_representation)] +#![allow(clippy::repr_packed_without_abi)] union NoAttribute { //~^ ERROR: this union has the default representation diff --git a/tests/ui/default_union_representation.stderr b/tests/ui/default_union_representation.stderr index c7ef70a0b8e..d558a3e8de1 100644 --- a/tests/ui/default_union_representation.stderr +++ b/tests/ui/default_union_representation.stderr @@ -1,5 +1,5 @@ error: this union has the default representation - --> tests/ui/default_union_representation.rs:4:1 + --> tests/ui/default_union_representation.rs:5:1 | LL | / union NoAttribute { LL | | @@ -13,7 +13,7 @@ LL | | } = help: to override `-D warnings` add `#[allow(clippy::default_union_representation)]` error: this union has the default representation - --> tests/ui/default_union_representation.rs:17:1 + --> tests/ui/default_union_representation.rs:18:1 | LL | / union ReprPacked { LL | | @@ -25,7 +25,7 @@ LL | | } = help: consider annotating `ReprPacked` with `#[repr(C)]` to explicitly specify memory layout error: this union has the default representation - --> tests/ui/default_union_representation.rs:36:1 + --> tests/ui/default_union_representation.rs:37:1 | LL | / union ReprAlign { LL | | @@ -37,7 +37,7 @@ LL | | } = help: consider annotating `ReprAlign` with `#[repr(C)]` to explicitly specify memory layout error: this union has the default representation - --> tests/ui/default_union_representation.rs:57:1 + --> tests/ui/default_union_representation.rs:58:1 | LL | / union ZSTAndTwoFields { LL | | diff --git a/tests/ui/derive.rs b/tests/ui/derive.rs index 3647b242505..dabc06bd7d1 100644 --- a/tests/ui/derive.rs +++ b/tests/ui/derive.rs @@ -2,6 +2,7 @@ clippy::non_canonical_clone_impl, clippy::non_canonical_partial_ord_impl, clippy::needless_lifetimes, + clippy::repr_packed_without_abi, dead_code )] #![warn(clippy::expl_impl_clone_on_copy)] diff --git a/tests/ui/derive.stderr b/tests/ui/derive.stderr index c072a9a6277..0eb4b3c1ada 100644 --- a/tests/ui/derive.stderr +++ b/tests/ui/derive.stderr @@ -1,5 +1,5 @@ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:12:1 + --> tests/ui/derive.rs:13:1 | LL | / impl Clone for Qux { LL | | @@ -10,7 +10,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:12:1 + --> tests/ui/derive.rs:13:1 | LL | / impl Clone for Qux { LL | | @@ -23,7 +23,7 @@ LL | | } = help: to override `-D warnings` add `#[allow(clippy::expl_impl_clone_on_copy)]` error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:37:1 + --> tests/ui/derive.rs:38:1 | LL | / impl<'a> Clone for Lt<'a> { LL | | @@ -34,7 +34,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:37:1 + --> tests/ui/derive.rs:38:1 | LL | / impl<'a> Clone for Lt<'a> { LL | | @@ -45,7 +45,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:49:1 + --> tests/ui/derive.rs:50:1 | LL | / impl Clone for BigArray { LL | | @@ -56,7 +56,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:49:1 + --> tests/ui/derive.rs:50:1 | LL | / impl Clone for BigArray { LL | | @@ -67,7 +67,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:61:1 + --> tests/ui/derive.rs:62:1 | LL | / impl Clone for FnPtr { LL | | @@ -78,7 +78,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:61:1 + --> tests/ui/derive.rs:62:1 | LL | / impl Clone for FnPtr { LL | | @@ -89,7 +89,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:82:1 + --> tests/ui/derive.rs:83:1 | LL | / impl Clone for Generic2 { LL | | @@ -100,7 +100,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:82:1 + --> tests/ui/derive.rs:83:1 | LL | / impl Clone for Generic2 { LL | | diff --git a/tests/ui/repr_packed_without_abi.rs b/tests/ui/repr_packed_without_abi.rs new file mode 100644 index 00000000000..16b5ededee9 --- /dev/null +++ b/tests/ui/repr_packed_without_abi.rs @@ -0,0 +1,37 @@ +#![deny(clippy::repr_packed_without_abi)] + +#[repr(packed)] +struct NetworkPacketHeader { + header_length: u8, + header_version: u16, +} + +#[repr(packed)] +union Foo { + a: u8, + b: u16, +} + +#[repr(C, packed)] +struct NoLintCNetworkPacketHeader { + header_length: u8, + header_version: u16, +} + +#[repr(Rust, packed)] +struct NoLintRustNetworkPacketHeader { + header_length: u8, + header_version: u16, +} + +#[repr(packed, C)] +union NotLintCFoo { + a: u8, + b: u16, +} + +#[repr(packed, Rust)] +union NotLintRustFoo { + a: u8, + b: u16, +} diff --git a/tests/ui/repr_packed_without_abi.stderr b/tests/ui/repr_packed_without_abi.stderr new file mode 100644 index 00000000000..4f7acd00db3 --- /dev/null +++ b/tests/ui/repr_packed_without_abi.stderr @@ -0,0 +1,35 @@ +error: item uses `packed` representation without ABI-qualification + --> tests/ui/repr_packed_without_abi.rs:4:1 + | +LL | #[repr(packed)] + | ------ `packed` representation set here +LL | / struct NetworkPacketHeader { +LL | | header_length: u8, +LL | | header_version: u16, +LL | | } + | |_^ + | + = warning: unqualified `#[repr(packed)]` defaults to `#[repr(Rust, packed)]`, which has no stable ABI + = help: qualify the desired ABI explicity via `#[repr(C, packed)]` or `#[repr(Rust, packed)]` +note: the lint level is defined here + --> tests/ui/repr_packed_without_abi.rs:1:9 + | +LL | #![deny(clippy::repr_packed_without_abi)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: item uses `packed` representation without ABI-qualification + --> tests/ui/repr_packed_without_abi.rs:10:1 + | +LL | #[repr(packed)] + | ------ `packed` representation set here +LL | / union Foo { +LL | | a: u8, +LL | | b: u16, +LL | | } + | |_^ + | + = warning: unqualified `#[repr(packed)]` defaults to `#[repr(Rust, packed)]`, which has no stable ABI + = help: qualify the desired ABI explicity via `#[repr(C, packed)]` or `#[repr(Rust, packed)]` + +error: aborting due to 2 previous errors + diff --git a/tests/ui/trailing_empty_array.rs b/tests/ui/trailing_empty_array.rs index 3d06c262168..309a5920dfd 100644 --- a/tests/ui/trailing_empty_array.rs +++ b/tests/ui/trailing_empty_array.rs @@ -1,4 +1,5 @@ #![warn(clippy::trailing_empty_array)] +#![allow(clippy::repr_packed_without_abi)] // Do lint: diff --git a/tests/ui/trailing_empty_array.stderr b/tests/ui/trailing_empty_array.stderr index 756381478f2..7ebff372cf7 100644 --- a/tests/ui/trailing_empty_array.stderr +++ b/tests/ui/trailing_empty_array.stderr @@ -1,5 +1,5 @@ error: trailing zero-sized array in a struct which is not marked with a `repr` attribute - --> tests/ui/trailing_empty_array.rs:5:1 + --> tests/ui/trailing_empty_array.rs:6:1 | LL | / struct RarelyUseful { LL | | @@ -13,7 +13,7 @@ LL | | } = help: to override `-D warnings` add `#[allow(clippy::trailing_empty_array)]` error: trailing zero-sized array in a struct which is not marked with a `repr` attribute - --> tests/ui/trailing_empty_array.rs:11:1 + --> tests/ui/trailing_empty_array.rs:12:1 | LL | / struct OnlyField { LL | | @@ -24,7 +24,7 @@ LL | | } = help: consider annotating `OnlyField` with `#[repr(C)]` or another `repr` attribute error: trailing zero-sized array in a struct which is not marked with a `repr` attribute - --> tests/ui/trailing_empty_array.rs:16:1 + --> tests/ui/trailing_empty_array.rs:17:1 | LL | / struct GenericArrayType { LL | | @@ -36,7 +36,7 @@ LL | | } = help: consider annotating `GenericArrayType` with `#[repr(C)]` or another `repr` attribute error: trailing zero-sized array in a struct which is not marked with a `repr` attribute - --> tests/ui/trailing_empty_array.rs:23:1 + --> tests/ui/trailing_empty_array.rs:24:1 | LL | / struct OnlyAnotherAttribute { LL | | @@ -48,7 +48,7 @@ LL | | } = help: consider annotating `OnlyAnotherAttribute` with `#[repr(C)]` or another `repr` attribute error: trailing zero-sized array in a struct which is not marked with a `repr` attribute - --> tests/ui/trailing_empty_array.rs:30:1 + --> tests/ui/trailing_empty_array.rs:31:1 | LL | / struct OnlyADeriveAttribute { LL | | @@ -60,7 +60,7 @@ LL | | } = help: consider annotating `OnlyADeriveAttribute` with `#[repr(C)]` or another `repr` attribute error: trailing zero-sized array in a struct which is not marked with a `repr` attribute - --> tests/ui/trailing_empty_array.rs:37:1 + --> tests/ui/trailing_empty_array.rs:38:1 | LL | / struct ZeroSizedWithConst { LL | | @@ -72,7 +72,7 @@ LL | | } = help: consider annotating `ZeroSizedWithConst` with `#[repr(C)]` or another `repr` attribute error: trailing zero-sized array in a struct which is not marked with a `repr` attribute - --> tests/ui/trailing_empty_array.rs:47:1 + --> tests/ui/trailing_empty_array.rs:48:1 | LL | / struct ZeroSizedWithConstFunction { LL | | @@ -84,7 +84,7 @@ LL | | } = help: consider annotating `ZeroSizedWithConstFunction` with `#[repr(C)]` or another `repr` attribute error: trailing zero-sized array in a struct which is not marked with a `repr` attribute - --> tests/ui/trailing_empty_array.rs:56:1 + --> tests/ui/trailing_empty_array.rs:57:1 | LL | / struct ZeroSizedWithConstFunction2 { LL | | @@ -96,7 +96,7 @@ LL | | } = help: consider annotating `ZeroSizedWithConstFunction2` with `#[repr(C)]` or another `repr` attribute error: trailing zero-sized array in a struct which is not marked with a `repr` attribute - --> tests/ui/trailing_empty_array.rs:62:1 + --> tests/ui/trailing_empty_array.rs:63:1 | LL | struct ZeroSizedArrayWrapper([usize; 0]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -104,7 +104,7 @@ LL | struct ZeroSizedArrayWrapper([usize; 0]); = help: consider annotating `ZeroSizedArrayWrapper` with `#[repr(C)]` or another `repr` attribute error: trailing zero-sized array in a struct which is not marked with a `repr` attribute - --> tests/ui/trailing_empty_array.rs:65:1 + --> tests/ui/trailing_empty_array.rs:66:1 | LL | struct TupleStruct(i32, [usize; 0]); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -112,7 +112,7 @@ LL | struct TupleStruct(i32, [usize; 0]); = help: consider annotating `TupleStruct` with `#[repr(C)]` or another `repr` attribute error: trailing zero-sized array in a struct which is not marked with a `repr` attribute - --> tests/ui/trailing_empty_array.rs:68:1 + --> tests/ui/trailing_empty_array.rs:69:1 | LL | / struct LotsOfFields { LL | | -- cgit 1.4.1-3-g733a5 From 4c0177cbbc31bb58b3c5c0b24af1ae802353d492 Mon Sep 17 00:00:00 2001 From: Samuel Tardieu Date: Mon, 16 Dec 2024 00:25:55 +0100 Subject: Do not suggest using `Error` in `no_std` before Rust 1.81 --- clippy_lints/src/functions/mod.rs | 11 ++++++++--- clippy_lints/src/functions/result.rs | 29 ++++++++++++++++++++--------- clippy_utils/src/msrvs.rs | 2 +- tests/ui/result_unit_error_no_std.rs | 26 ++++++++++++++++++++++++++ tests/ui/result_unit_error_no_std.stderr | 12 ++++++++++++ 5 files changed, 67 insertions(+), 13 deletions(-) create mode 100644 tests/ui/result_unit_error_no_std.rs create mode 100644 tests/ui/result_unit_error_no_std.stderr diff --git a/clippy_lints/src/functions/mod.rs b/clippy_lints/src/functions/mod.rs index be3d0f7ad63..243eb5cbfd4 100644 --- a/clippy_lints/src/functions/mod.rs +++ b/clippy_lints/src/functions/mod.rs @@ -10,6 +10,7 @@ mod too_many_lines; use clippy_config::Conf; use clippy_utils::def_path_def_ids; +use clippy_utils::msrvs::Msrv; use rustc_hir as hir; use rustc_hir::intravisit; use rustc_lint::{LateContext, LateLintPass}; @@ -455,6 +456,7 @@ pub struct Functions { /// A set of resolved `def_id` of traits that are configured to allow /// function params renaming. trait_ids: DefIdSet, + msrv: Msrv, } impl Functions { @@ -469,6 +471,7 @@ impl Functions { .iter() .flat_map(|p| def_path_def_ids(tcx, &p.split("::").collect::>())) .collect(), + msrv: conf.msrv.clone(), } } } @@ -518,12 +521,12 @@ impl<'tcx> LateLintPass<'tcx> for Functions { fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx hir::Item<'_>) { must_use::check_item(cx, item); - result::check_item(cx, item, self.large_error_threshold); + result::check_item(cx, item, self.large_error_threshold, &self.msrv); } fn check_impl_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx hir::ImplItem<'_>) { must_use::check_impl_item(cx, item); - result::check_impl_item(cx, item, self.large_error_threshold); + result::check_impl_item(cx, item, self.large_error_threshold, &self.msrv); impl_trait_in_params::check_impl_item(cx, item); renamed_function_params::check_impl_item(cx, item, &self.trait_ids); } @@ -532,8 +535,10 @@ impl<'tcx> LateLintPass<'tcx> for Functions { too_many_arguments::check_trait_item(cx, item, self.too_many_arguments_threshold); not_unsafe_ptr_arg_deref::check_trait_item(cx, item); must_use::check_trait_item(cx, item); - result::check_trait_item(cx, item, self.large_error_threshold); + result::check_trait_item(cx, item, self.large_error_threshold, &self.msrv); impl_trait_in_params::check_trait_item(cx, item, self.avoid_breaking_exported_api); ref_option::check_trait_item(cx, item, self.avoid_breaking_exported_api); } + + extract_msrv_attr!(LateContext); } diff --git a/clippy_lints/src/functions/result.rs b/clippy_lints/src/functions/result.rs index d4eaa166320..674d78eaae7 100644 --- a/clippy_lints/src/functions/result.rs +++ b/clippy_lints/src/functions/result.rs @@ -1,3 +1,4 @@ +use clippy_utils::msrvs::{self, Msrv}; use rustc_errors::Diag; use rustc_hir as hir; use rustc_lint::{LateContext, LintContext}; @@ -6,8 +7,8 @@ use rustc_middle::ty::{self, Ty}; use rustc_span::{Span, sym}; use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_then}; -use clippy_utils::trait_ref_of_method; use clippy_utils::ty::{AdtVariantInfo, approx_ty_size, is_type_diagnostic_item}; +use clippy_utils::{is_no_std_crate, trait_ref_of_method}; use super::{RESULT_LARGE_ERR, RESULT_UNIT_ERR}; @@ -34,19 +35,24 @@ fn result_err_ty<'tcx>( } } -pub(super) fn check_item<'tcx>(cx: &LateContext<'tcx>, item: &hir::Item<'tcx>, large_err_threshold: u64) { +pub(super) fn check_item<'tcx>(cx: &LateContext<'tcx>, item: &hir::Item<'tcx>, large_err_threshold: u64, msrv: &Msrv) { if let hir::ItemKind::Fn(ref sig, _generics, _) = item.kind && let Some((hir_ty, err_ty)) = result_err_ty(cx, sig.decl, item.owner_id.def_id, item.span) { if cx.effective_visibilities.is_exported(item.owner_id.def_id) { let fn_header_span = item.span.with_hi(sig.decl.output.span().hi()); - check_result_unit_err(cx, err_ty, fn_header_span); + check_result_unit_err(cx, err_ty, fn_header_span, msrv); } check_result_large_err(cx, err_ty, hir_ty.span, large_err_threshold); } } -pub(super) fn check_impl_item<'tcx>(cx: &LateContext<'tcx>, item: &hir::ImplItem<'tcx>, large_err_threshold: u64) { +pub(super) fn check_impl_item<'tcx>( + cx: &LateContext<'tcx>, + item: &hir::ImplItem<'tcx>, + large_err_threshold: u64, + msrv: &Msrv, +) { // Don't lint if method is a trait's implementation, we can't do anything about those if let hir::ImplItemKind::Fn(ref sig, _) = item.kind && let Some((hir_ty, err_ty)) = result_err_ty(cx, sig.decl, item.owner_id.def_id, item.span) @@ -54,26 +60,31 @@ pub(super) fn check_impl_item<'tcx>(cx: &LateContext<'tcx>, item: &hir::ImplItem { if cx.effective_visibilities.is_exported(item.owner_id.def_id) { let fn_header_span = item.span.with_hi(sig.decl.output.span().hi()); - check_result_unit_err(cx, err_ty, fn_header_span); + check_result_unit_err(cx, err_ty, fn_header_span, msrv); } check_result_large_err(cx, err_ty, hir_ty.span, large_err_threshold); } } -pub(super) fn check_trait_item<'tcx>(cx: &LateContext<'tcx>, item: &hir::TraitItem<'tcx>, large_err_threshold: u64) { +pub(super) fn check_trait_item<'tcx>( + cx: &LateContext<'tcx>, + item: &hir::TraitItem<'tcx>, + large_err_threshold: u64, + msrv: &Msrv, +) { if let hir::TraitItemKind::Fn(ref sig, _) = item.kind { let fn_header_span = item.span.with_hi(sig.decl.output.span().hi()); if let Some((hir_ty, err_ty)) = result_err_ty(cx, sig.decl, item.owner_id.def_id, item.span) { if cx.effective_visibilities.is_exported(item.owner_id.def_id) { - check_result_unit_err(cx, err_ty, fn_header_span); + check_result_unit_err(cx, err_ty, fn_header_span, msrv); } check_result_large_err(cx, err_ty, hir_ty.span, large_err_threshold); } } } -fn check_result_unit_err(cx: &LateContext<'_>, err_ty: Ty<'_>, fn_header_span: Span) { - if err_ty.is_unit() { +fn check_result_unit_err(cx: &LateContext<'_>, err_ty: Ty<'_>, fn_header_span: Span, msrv: &Msrv) { + if err_ty.is_unit() && (!is_no_std_crate(cx) || msrv.meets(msrvs::ERROR_IN_CORE)) { span_lint_and_help( cx, RESULT_UNIT_ERR, diff --git a/clippy_utils/src/msrvs.rs b/clippy_utils/src/msrvs.rs index f0381760709..9e90d186670 100644 --- a/clippy_utils/src/msrvs.rs +++ b/clippy_utils/src/msrvs.rs @@ -20,7 +20,7 @@ macro_rules! msrv_aliases { msrv_aliases! { 1,83,0 { CONST_EXTERN_FN, CONST_FLOAT_BITS_CONV, CONST_FLOAT_CLASSIFY } 1,82,0 { IS_NONE_OR, REPEAT_N, RAW_REF_OP } - 1,81,0 { LINT_REASONS_STABILIZATION } + 1,81,0 { LINT_REASONS_STABILIZATION, ERROR_IN_CORE } 1,80,0 { BOX_INTO_ITER } 1,77,0 { C_STR_LITERALS } 1,76,0 { PTR_FROM_REF, OPTION_RESULT_INSPECT } diff --git a/tests/ui/result_unit_error_no_std.rs b/tests/ui/result_unit_error_no_std.rs new file mode 100644 index 00000000000..1e7a028a7fc --- /dev/null +++ b/tests/ui/result_unit_error_no_std.rs @@ -0,0 +1,26 @@ +#![feature(lang_items, start, libc)] +#![no_std] +#![warn(clippy::result_unit_err)] + +#[clippy::msrv = "1.80"] +pub fn returns_unit_error_no_lint() -> Result { + Err(()) +} + +#[clippy::msrv = "1.81"] +pub fn returns_unit_error_lint() -> Result { + Err(()) +} + +#[start] +fn main(_argc: isize, _argv: *const *const u8) -> isize { + 0 +} + +#[panic_handler] +fn panic(_info: &core::panic::PanicInfo) -> ! { + loop {} +} + +#[lang = "eh_personality"] +extern "C" fn eh_personality() {} diff --git a/tests/ui/result_unit_error_no_std.stderr b/tests/ui/result_unit_error_no_std.stderr new file mode 100644 index 00000000000..33692e60554 --- /dev/null +++ b/tests/ui/result_unit_error_no_std.stderr @@ -0,0 +1,12 @@ +error: this returns a `Result<_, ()>` + --> tests/ui/result_unit_error_no_std.rs:11:1 + | +LL | pub fn returns_unit_error_lint() -> Result { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: use a custom `Error` type instead + = note: `-D clippy::result-unit-err` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::result_unit_err)]` + +error: aborting due to 1 previous error + -- cgit 1.4.1-3-g733a5 From 1a23b5b51765a9f47e9afafbd9b611c5d11b5dfd Mon Sep 17 00:00:00 2001 From: lapla-cogito Date: Mon, 16 Dec 2024 18:07:47 +0900 Subject: correct suggestion for unnecessary_sort_by in no_std --- clippy_lints/src/methods/unnecessary_sort_by.rs | 8 +++++--- tests/ui/unnecessary_sort_by_no_std.fixed | 20 ++++++++++++++++++++ tests/ui/unnecessary_sort_by_no_std.rs | 20 ++++++++++++++++++++ tests/ui/unnecessary_sort_by_no_std.stderr | 17 +++++++++++++++++ 4 files changed, 62 insertions(+), 3 deletions(-) create mode 100644 tests/ui/unnecessary_sort_by_no_std.fixed create mode 100644 tests/ui/unnecessary_sort_by_no_std.rs create mode 100644 tests/ui/unnecessary_sort_by_no_std.stderr diff --git a/clippy_lints/src/methods/unnecessary_sort_by.rs b/clippy_lints/src/methods/unnecessary_sort_by.rs index 8ba10938ce6..2732a89e07b 100644 --- a/clippy_lints/src/methods/unnecessary_sort_by.rs +++ b/clippy_lints/src/methods/unnecessary_sort_by.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::is_trait_method; use clippy_utils::sugg::Sugg; use clippy_utils::ty::implements_trait; +use clippy_utils::{is_trait_method, std_or_core}; use rustc_errors::Applicability; use rustc_hir::{Closure, Expr, ExprKind, Mutability, Param, Pat, PatKind, Path, PathSegment, QPath}; use rustc_lint::LateContext; @@ -212,8 +212,10 @@ pub(super) fn check<'tcx>( trigger.vec_name, if is_unstable { "_unstable" } else { "" }, trigger.closure_arg, - if trigger.reverse { - format!("std::cmp::Reverse({})", trigger.closure_body) + if let Some(std_or_core) = std_or_core(cx) + && trigger.reverse + { + format!("{}::cmp::Reverse({})", std_or_core, trigger.closure_body) } else { trigger.closure_body.to_string() }, diff --git a/tests/ui/unnecessary_sort_by_no_std.fixed b/tests/ui/unnecessary_sort_by_no_std.fixed new file mode 100644 index 00000000000..c7be000b820 --- /dev/null +++ b/tests/ui/unnecessary_sort_by_no_std.fixed @@ -0,0 +1,20 @@ +#![no_std] +extern crate alloc; +use alloc::vec; +use alloc::vec::Vec; + +fn issue_11524() -> Vec { + let mut vec = vec![1, 2, 3]; + + // Should lint and suggest `vec.sort_by_key(|a| a + 1);` + vec.sort_by_key(|a| a + 1); + vec +} + +fn issue_11524_2() -> Vec { + let mut vec = vec![1, 2, 3]; + + // Should lint and suggest `vec.sort_by_key(|b| core::cmp::Reverse(b + 1));` + vec.sort_by_key(|b| core::cmp::Reverse(b + 1)); + vec +} diff --git a/tests/ui/unnecessary_sort_by_no_std.rs b/tests/ui/unnecessary_sort_by_no_std.rs new file mode 100644 index 00000000000..5f44be97c61 --- /dev/null +++ b/tests/ui/unnecessary_sort_by_no_std.rs @@ -0,0 +1,20 @@ +#![no_std] +extern crate alloc; +use alloc::vec; +use alloc::vec::Vec; + +fn issue_11524() -> Vec { + let mut vec = vec![1, 2, 3]; + + // Should lint and suggest `vec.sort_by_key(|a| a + 1);` + vec.sort_by(|a, b| (a + 1).cmp(&(b + 1))); + vec +} + +fn issue_11524_2() -> Vec { + let mut vec = vec![1, 2, 3]; + + // Should lint and suggest `vec.sort_by_key(|b| core::cmp::Reverse(b + 1));` + vec.sort_by(|a, b| (b + 1).cmp(&(a + 1))); + vec +} diff --git a/tests/ui/unnecessary_sort_by_no_std.stderr b/tests/ui/unnecessary_sort_by_no_std.stderr new file mode 100644 index 00000000000..a57fbc7a632 --- /dev/null +++ b/tests/ui/unnecessary_sort_by_no_std.stderr @@ -0,0 +1,17 @@ +error: consider using `sort_by_key` + --> tests/ui/unnecessary_sort_by_no_std.rs:10:5 + | +LL | vec.sort_by(|a, b| (a + 1).cmp(&(b + 1))); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `vec.sort_by_key(|a| a + 1)` + | + = note: `-D clippy::unnecessary-sort-by` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::unnecessary_sort_by)]` + +error: consider using `sort_by_key` + --> tests/ui/unnecessary_sort_by_no_std.rs:18:5 + | +LL | vec.sort_by(|a, b| (b + 1).cmp(&(a + 1))); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `vec.sort_by_key(|b| core::cmp::Reverse(b + 1))` + +error: aborting due to 2 previous errors + -- cgit 1.4.1-3-g733a5 From ad695da7d2c1d9c01f08a5be84ccff02df70eb68 Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Mon, 16 Dec 2024 16:55:09 +0100 Subject: Correctly handle string indices in `literal_string_with_formatting_arg` --- clippy_lints/src/lib.rs | 1 + clippy_lints/src/literal_string_with_formatting_args.rs | 10 +++++++++- tests/ui/literal_string_with_formatting_arg.rs | 4 ++++ 3 files changed, 14 insertions(+), 1 deletion(-) diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs index 25713001f21..95f26818c09 100644 --- a/clippy_lints/src/lib.rs +++ b/clippy_lints/src/lib.rs @@ -9,6 +9,7 @@ #![feature(iter_partition_in_place)] #![feature(let_chains)] #![feature(never_type)] +#![feature(round_char_boundary)] #![feature(rustc_private)] #![feature(stmt_expr_attributes)] #![feature(unwrap_infallible)] diff --git a/clippy_lints/src/literal_string_with_formatting_args.rs b/clippy_lints/src/literal_string_with_formatting_args.rs index 378be37fbac..49353a1b76b 100644 --- a/clippy_lints/src/literal_string_with_formatting_args.rs +++ b/clippy_lints/src/literal_string_with_formatting_args.rs @@ -108,7 +108,15 @@ impl LateLintPass<'_> for LiteralStringWithFormattingArg { if error.span.end >= current.len() { break; } - current = ¤t[error.span.end + 1..]; + // We find the closest char to where the error location ends. + let pos = current.floor_char_boundary(error.span.end); + // We get the next character. + current = if let Some((next_char_pos, _)) = current[pos..].char_indices().nth(1) { + // We make the parser start from this new location. + ¤t[pos + next_char_pos..] + } else { + break; + }; diff_len = fmt_str.len() - current.len(); parser = Parser::new(current, None, None, false, ParseMode::Format); } else if let Piece::NextArgument(arg) = piece { diff --git a/tests/ui/literal_string_with_formatting_arg.rs b/tests/ui/literal_string_with_formatting_arg.rs index 20bd243aa30..f257c66f59d 100644 --- a/tests/ui/literal_string_with_formatting_arg.rs +++ b/tests/ui/literal_string_with_formatting_arg.rs @@ -30,4 +30,8 @@ fn main() { }"; // Unicode characters escape should not lint either. "\u{0052}".to_string(); + + // Regression test for . + let x: Option = Some(0); + x.expect("{…}"); } -- cgit 1.4.1-3-g733a5 From 6f65a813a2db23e0a7e42ab1b319ad59d27a26e7 Mon Sep 17 00:00:00 2001 From: Jonathan Dönszelmann Date: Sat, 7 Dec 2024 15:27:17 +0100 Subject: split attributes --- clippy_utils/src/msrvs.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/clippy_utils/src/msrvs.rs b/clippy_utils/src/msrvs.rs index 5b1c3465d05..55986acea3d 100644 --- a/clippy_utils/src/msrvs.rs +++ b/clippy_utils/src/msrvs.rs @@ -1,4 +1,4 @@ -use rustc_attr::AttributeExt; +use rustc_ast::attr::AttributeExt; use rustc_attr::parse_version; use rustc_session::{RustcVersion, Session}; use rustc_span::{Symbol, sym}; -- cgit 1.4.1-3-g733a5 From 4d05825f3eada471dd1a83bbe9110fc3e8bc1903 Mon Sep 17 00:00:00 2001 From: Jonathan Dönszelmann Date: Fri, 13 Dec 2024 14:47:11 +0100 Subject: rename rustc_attr to rustc_attr_parsing and create rustc_attr_data_structures --- clippy_lints/src/approx_const.rs | 3 ++- clippy_lints/src/booleans.rs | 3 ++- clippy_lints/src/incompatible_msrv.rs | 4 ++-- clippy_lints/src/lib.rs | 2 +- clippy_lints/src/std_instead_of_core.rs | 2 +- clippy_lints/src/utils/internal_lints/lint_without_lint_pass.rs | 2 +- clippy_utils/src/lib.rs | 2 +- clippy_utils/src/msrvs.rs | 4 ++-- clippy_utils/src/qualify_min_const_fn.rs | 6 +++--- 9 files changed, 15 insertions(+), 13 deletions(-) diff --git a/clippy_lints/src/approx_const.rs b/clippy_lints/src/approx_const.rs index ebd35fd2b27..95c85f250e9 100644 --- a/clippy_lints/src/approx_const.rs +++ b/clippy_lints/src/approx_const.rs @@ -2,9 +2,10 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_and_help; use clippy_utils::msrvs::{self, Msrv}; use rustc_ast::ast::{FloatTy, LitFloatType, LitKind}; +use rustc_attr_parsing::RustcVersion; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; -use rustc_session::{RustcVersion, impl_lint_pass}; +use rustc_session::impl_lint_pass; use rustc_span::symbol; use std::f64::consts as f64; diff --git a/clippy_lints/src/booleans.rs b/clippy_lints/src/booleans.rs index 6eef0d42a55..f68a7a89b39 100644 --- a/clippy_lints/src/booleans.rs +++ b/clippy_lints/src/booleans.rs @@ -9,7 +9,8 @@ use rustc_errors::Applicability; use rustc_hir::intravisit::{FnKind, Visitor, walk_expr}; use rustc_hir::{BinOpKind, Body, Expr, ExprKind, FnDecl, UnOp}; use rustc_lint::{LateContext, LateLintPass, Level}; -use rustc_session::{RustcVersion, impl_lint_pass}; +use rustc_attr_parsing::RustcVersion; +use rustc_session::impl_lint_pass; use rustc_span::def_id::LocalDefId; use rustc_span::{Span, sym}; diff --git a/clippy_lints/src/incompatible_msrv.rs b/clippy_lints/src/incompatible_msrv.rs index f3467adacc5..6cee7cfaca2 100644 --- a/clippy_lints/src/incompatible_msrv.rs +++ b/clippy_lints/src/incompatible_msrv.rs @@ -2,12 +2,12 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint; use clippy_utils::is_in_test; use clippy_utils::msrvs::Msrv; -use rustc_attr::{StabilityLevel, StableSince}; +use rustc_attr_parsing::{StabilityLevel, StableSince, RustcVersion}; use rustc_data_structures::fx::FxHashMap; use rustc_hir::{Expr, ExprKind, HirId}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::TyCtxt; -use rustc_session::{RustcVersion, impl_lint_pass}; +use rustc_session::impl_lint_pass; use rustc_span::def_id::DefId; use rustc_span::{ExpnKind, Span}; diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs index e80cca6e7db..3e8315588cc 100644 --- a/clippy_lints/src/lib.rs +++ b/clippy_lints/src/lib.rs @@ -35,7 +35,7 @@ extern crate rustc_abi; extern crate rustc_arena; extern crate rustc_ast; extern crate rustc_ast_pretty; -extern crate rustc_attr; +extern crate rustc_attr_parsing; extern crate rustc_data_structures; extern crate rustc_driver; extern crate rustc_errors; diff --git a/clippy_lints/src/std_instead_of_core.rs b/clippy_lints/src/std_instead_of_core.rs index 2941b9c3960..82ff13a5aff 100644 --- a/clippy_lints/src/std_instead_of_core.rs +++ b/clippy_lints/src/std_instead_of_core.rs @@ -2,7 +2,7 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_from_proc_macro; use clippy_utils::msrvs::Msrv; -use rustc_attr::{StabilityLevel, StableSince}; +use rustc_attr_parsing::{StabilityLevel, StableSince}; use rustc_errors::Applicability; use rustc_hir::def::Res; use rustc_hir::def_id::DefId; diff --git a/clippy_lints/src/utils/internal_lints/lint_without_lint_pass.rs b/clippy_lints/src/utils/internal_lints/lint_without_lint_pass.rs index af38e066559..496343d82c8 100644 --- a/clippy_lints/src/utils/internal_lints/lint_without_lint_pass.rs +++ b/clippy_lints/src/utils/internal_lints/lint_without_lint_pass.rs @@ -222,7 +222,7 @@ fn check_invalid_clippy_version_attribute(cx: &LateContext<'_>, item: &'_ Item<' return; } - if rustc_attr::parse_version(value).is_none() { + if rustc_attr_parsing::parse_version(value).is_none() { span_lint_and_help( cx, INVALID_CLIPPY_VERSION_ATTRIBUTE, diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs index 96139a08c3d..02bbddb413a 100644 --- a/clippy_utils/src/lib.rs +++ b/clippy_utils/src/lib.rs @@ -31,7 +31,7 @@ // (Currently there is no way to opt into sysroot crates without `extern crate`.) extern crate rustc_ast; extern crate rustc_ast_pretty; -extern crate rustc_attr; +extern crate rustc_attr_parsing; extern crate rustc_const_eval; extern crate rustc_data_structures; // The `rustc_driver` crate seems to be required in order to use the `rust_ast` crate. diff --git a/clippy_utils/src/msrvs.rs b/clippy_utils/src/msrvs.rs index 55986acea3d..1e6368fab36 100644 --- a/clippy_utils/src/msrvs.rs +++ b/clippy_utils/src/msrvs.rs @@ -1,6 +1,6 @@ use rustc_ast::attr::AttributeExt; -use rustc_attr::parse_version; -use rustc_session::{RustcVersion, Session}; +use rustc_attr_parsing::{parse_version, RustcVersion}; +use rustc_session::Session; use rustc_span::{Symbol, sym}; use serde::Deserialize; use smallvec::{SmallVec, smallvec}; diff --git a/clippy_utils/src/qualify_min_const_fn.rs b/clippy_utils/src/qualify_min_const_fn.rs index df3f10d6179..104ae154e36 100644 --- a/clippy_utils/src/qualify_min_const_fn.rs +++ b/clippy_utils/src/qualify_min_const_fn.rs @@ -5,7 +5,7 @@ use crate::msrvs::{self, Msrv}; use hir::LangItem; -use rustc_attr::StableSince; +use rustc_attr_parsing::{RustcVersion, StableSince}; use rustc_const_eval::check_consts::ConstCx; use rustc_hir as hir; use rustc_hir::def_id::DefId; @@ -381,14 +381,14 @@ fn check_terminator<'tcx>( fn is_stable_const_fn(tcx: TyCtxt<'_>, def_id: DefId, msrv: &Msrv) -> bool { tcx.is_const_fn(def_id) && tcx.lookup_const_stability(def_id).is_none_or(|const_stab| { - if let rustc_attr::StabilityLevel::Stable { since, .. } = const_stab.level { + if let rustc_attr_parsing::StabilityLevel::Stable { since, .. } = const_stab.level { // Checking MSRV is manually necessary because `rustc` has no such concept. This entire // function could be removed if `rustc` provided a MSRV-aware version of `is_stable_const_fn`. // as a part of an unimplemented MSRV check https://github.com/rust-lang/rust/issues/65262. let const_stab_rust_version = match since { StableSince::Version(version) => version, - StableSince::Current => rustc_session::RustcVersion::CURRENT, + StableSince::Current => RustcVersion::CURRENT, StableSince::Err => return false, }; -- cgit 1.4.1-3-g733a5 From 81c0cf8a2dab808224187265b009ddf248215906 Mon Sep 17 00:00:00 2001 From: lapla-cogito Date: Tue, 17 Dec 2024 21:53:50 +0900 Subject: fix the team anchor in book --- book/src/development/the_team.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/book/src/development/the_team.md b/book/src/development/the_team.md index 10341791cec..6bc0783b166 100644 --- a/book/src/development/the_team.md +++ b/book/src/development/the_team.md @@ -72,7 +72,7 @@ you to the alumni group. You're always welcome to come back. ## The Clippy Team -[The Clippy team](https://www.rust-lang.org/governance/teams/dev-tools#Clippy%20team) +[The Clippy team](https://www.rust-lang.org/governance/teams/dev-tools#team-clippy) is responsible for maintaining Clippy. ### Duties -- cgit 1.4.1-3-g733a5 From 8fe39b276f56863e77bf4b7c3192a339a8a1ec58 Mon Sep 17 00:00:00 2001 From: Scott Gerring Date: Tue, 17 Dec 2024 18:14:34 +0100 Subject: Change unnecessary_iter_cloned to use multipart_suggestion --- .../src/methods/unnecessary_iter_cloned.rs | 16 +- tests/ui/unnecessary_iter_cloned.fixed | 201 +++++++++++++++++++++ tests/ui/unnecessary_iter_cloned.rs | 2 - tests/ui/unnecessary_iter_cloned.stderr | 43 ++--- tests/ui/unnecessary_to_owned.stderr | 8 +- 5 files changed, 226 insertions(+), 44 deletions(-) create mode 100644 tests/ui/unnecessary_iter_cloned.fixed diff --git a/clippy_lints/src/methods/unnecessary_iter_cloned.rs b/clippy_lints/src/methods/unnecessary_iter_cloned.rs index 029704882dd..671c189a98e 100644 --- a/clippy_lints/src/methods/unnecessary_iter_cloned.rs +++ b/clippy_lints/src/methods/unnecessary_iter_cloned.rs @@ -6,6 +6,7 @@ use clippy_utils::ty::{get_iterator_item_ty, implements_trait}; use clippy_utils::visitors::for_each_expr_without_closures; use clippy_utils::{can_mut_borrow_both, fn_def_id, get_parent_expr, path_to_local}; use core::ops::ControlFlow; +use itertools::Itertools; use rustc_errors::Applicability; use rustc_hir::def_id::DefId; use rustc_hir::{BindingMode, Expr, ExprKind, Node, PatKind}; @@ -122,14 +123,13 @@ pub fn check_for_loop_iter( } else { Applicability::MachineApplicable }; - diag.span_suggestion(expr.span, "use", snippet.to_owned(), applicability); - if !references_to_binding.is_empty() { - diag.multipart_suggestion( - "remove any references to the binding", - references_to_binding, - applicability, - ); - } + + let combined = references_to_binding + .into_iter() + .chain(vec![(expr.span, snippet.to_owned())]) + .collect_vec(); + + diag.multipart_suggestion("remove any references to the binding", combined, applicability); }, ); return true; diff --git a/tests/ui/unnecessary_iter_cloned.fixed b/tests/ui/unnecessary_iter_cloned.fixed new file mode 100644 index 00000000000..dc5e163ff04 --- /dev/null +++ b/tests/ui/unnecessary_iter_cloned.fixed @@ -0,0 +1,201 @@ +#![allow(unused_assignments)] +#![warn(clippy::unnecessary_to_owned)] + +#[allow(dead_code)] +#[derive(Clone, Copy)] +enum FileType { + Account, + PrivateKey, + Certificate, +} + +fn main() { + let path = std::path::Path::new("x"); + + let _ = check_files(&[(FileType::Account, path)]); + let _ = check_files_vec(vec![(FileType::Account, path)]); + + // negative tests + let _ = check_files_ref(&[(FileType::Account, path)]); + let _ = check_files_mut(&[(FileType::Account, path)]); + let _ = check_files_ref_mut(&[(FileType::Account, path)]); + let _ = check_files_self_and_arg(&[(FileType::Account, path)]); + let _ = check_files_mut_path_buf(&[(FileType::Account, std::path::PathBuf::new())]); + + check_mut_iteratee_and_modify_inner_variable(); +} + +// `check_files` and its variants are based on: +// https://github.com/breard-r/acmed/blob/1f0dcc32aadbc5e52de6d23b9703554c0f925113/acmed/src/storage.rs#L262 +fn check_files(files: &[(FileType, &std::path::Path)]) -> bool { + for (t, path) in files { + let other = match get_file_path(t) { + Ok(p) => p, + Err(_) => { + return false; + }, + }; + if !path.is_file() || !other.is_file() { + return false; + } + } + true +} + +fn check_files_vec(files: Vec<(FileType, &std::path::Path)>) -> bool { + for (t, path) in files.iter() { + let other = match get_file_path(t) { + Ok(p) => p, + Err(_) => { + return false; + }, + }; + if !path.is_file() || !other.is_file() { + return false; + } + } + true +} + +fn check_files_ref(files: &[(FileType, &std::path::Path)]) -> bool { + for (ref t, path) in files.iter().copied() { + let other = match get_file_path(t) { + Ok(p) => p, + Err(_) => { + return false; + }, + }; + if !path.is_file() || !other.is_file() { + return false; + } + } + true +} + +#[allow(unused_assignments)] +fn check_files_mut(files: &[(FileType, &std::path::Path)]) -> bool { + for (mut t, path) in files.iter().copied() { + t = FileType::PrivateKey; + let other = match get_file_path(&t) { + Ok(p) => p, + Err(_) => { + return false; + }, + }; + if !path.is_file() || !other.is_file() { + return false; + } + } + true +} + +fn check_files_ref_mut(files: &[(FileType, &std::path::Path)]) -> bool { + for (ref mut t, path) in files.iter().copied() { + *t = FileType::PrivateKey; + let other = match get_file_path(t) { + Ok(p) => p, + Err(_) => { + return false; + }, + }; + if !path.is_file() || !other.is_file() { + return false; + } + } + true +} + +fn check_files_self_and_arg(files: &[(FileType, &std::path::Path)]) -> bool { + for (t, path) in files.iter().copied() { + let other = match get_file_path(&t) { + Ok(p) => p, + Err(_) => { + return false; + }, + }; + if !path.join(path).is_file() || !other.is_file() { + return false; + } + } + true +} + +#[allow(unused_assignments)] +fn check_files_mut_path_buf(files: &[(FileType, std::path::PathBuf)]) -> bool { + for (mut t, path) in files.iter().cloned() { + t = FileType::PrivateKey; + let other = match get_file_path(&t) { + Ok(p) => p, + Err(_) => { + return false; + }, + }; + if !path.is_file() || !other.is_file() { + return false; + } + } + true +} + +fn get_file_path(_file_type: &FileType) -> Result { + Ok(std::path::PathBuf::new()) +} + +// Issue 12098 +// https://github.com/rust-lang/rust-clippy/issues/12098 +// no message emits +fn check_mut_iteratee_and_modify_inner_variable() { + struct Test { + list: Vec, + mut_this: bool, + } + + impl Test { + fn list(&self) -> &[String] { + &self.list + } + } + + let mut test = Test { + list: vec![String::from("foo"), String::from("bar")], + mut_this: false, + }; + + for _item in test.list().to_vec() { + println!("{}", _item); + + test.mut_this = true; + { + test.mut_this = true; + } + } +} + +mod issue_12821 { + fn foo() { + let v: Vec<_> = "hello".chars().collect(); + for c in v.iter() { + //~^ ERROR: unnecessary use of `cloned` + println!("{c}"); // should not suggest to remove `&` + } + } + + fn bar() { + let v: Vec<_> = "hello".chars().collect(); + for c in v.iter() { + //~^ ERROR: unnecessary use of `cloned` + let ref_c = c; //~ HELP: remove any references to the binding + println!("{ref_c}"); + } + } + + fn baz() { + let v: Vec<_> = "hello".chars().enumerate().collect(); + for (i, c) in v.iter() { + //~^ ERROR: unnecessary use of `cloned` + let ref_c = c; //~ HELP: remove any references to the binding + let ref_i = i; + println!("{i} {ref_c}"); // should not suggest to remove `&` from `i` + } + } +} diff --git a/tests/ui/unnecessary_iter_cloned.rs b/tests/ui/unnecessary_iter_cloned.rs index 331b7b25271..8f797ac717f 100644 --- a/tests/ui/unnecessary_iter_cloned.rs +++ b/tests/ui/unnecessary_iter_cloned.rs @@ -1,8 +1,6 @@ #![allow(unused_assignments)] #![warn(clippy::unnecessary_to_owned)] -//@no-rustfix: need to change the suggestion to a multipart suggestion - #[allow(dead_code)] #[derive(Clone, Copy)] enum FileType { diff --git a/tests/ui/unnecessary_iter_cloned.stderr b/tests/ui/unnecessary_iter_cloned.stderr index e3592e3cbbd..6f2ae0ab1f3 100644 --- a/tests/ui/unnecessary_iter_cloned.stderr +++ b/tests/ui/unnecessary_iter_cloned.stderr @@ -1,71 +1,58 @@ error: unnecessary use of `copied` - --> tests/ui/unnecessary_iter_cloned.rs:33:22 + --> tests/ui/unnecessary_iter_cloned.rs:31:22 | LL | for (t, path) in files.iter().copied() { | ^^^^^^^^^^^^^^^^^^^^^ | = note: `-D clippy::unnecessary-to-owned` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::unnecessary_to_owned)]` -help: use - | -LL | for (t, path) in files { - | ~~~~~ help: remove any references to the binding | -LL - let other = match get_file_path(&t) { -LL + let other = match get_file_path(t) { +LL ~ for (t, path) in files { +LL ~ let other = match get_file_path(t) { | error: unnecessary use of `copied` - --> tests/ui/unnecessary_iter_cloned.rs:48:22 + --> tests/ui/unnecessary_iter_cloned.rs:46:22 | LL | for (t, path) in files.iter().copied() { | ^^^^^^^^^^^^^^^^^^^^^ | -help: use - | -LL | for (t, path) in files.iter() { - | ~~~~~~~~~~~~ help: remove any references to the binding | -LL - let other = match get_file_path(&t) { -LL + let other = match get_file_path(t) { +LL ~ for (t, path) in files.iter() { +LL ~ let other = match get_file_path(t) { | error: unnecessary use of `cloned` - --> tests/ui/unnecessary_iter_cloned.rs:179:18 + --> tests/ui/unnecessary_iter_cloned.rs:177:18 | LL | for c in v.iter().cloned() { - | ^^^^^^^^^^^^^^^^^ help: use: `v.iter()` + | ^^^^^^^^^^^^^^^^^ help: remove any references to the binding: `v.iter()` error: unnecessary use of `cloned` - --> tests/ui/unnecessary_iter_cloned.rs:187:18 + --> tests/ui/unnecessary_iter_cloned.rs:185:18 | LL | for c in v.iter().cloned() { | ^^^^^^^^^^^^^^^^^ | -help: use - | -LL | for c in v.iter() { - | ~~~~~~~~ help: remove any references to the binding | -LL - let ref_c = &c; -LL + let ref_c = c; +LL ~ for c in v.iter() { +LL | +LL ~ let ref_c = c; | error: unnecessary use of `cloned` - --> tests/ui/unnecessary_iter_cloned.rs:196:23 + --> tests/ui/unnecessary_iter_cloned.rs:194:23 | LL | for (i, c) in v.iter().cloned() { | ^^^^^^^^^^^^^^^^^ | -help: use - | -LL | for (i, c) in v.iter() { - | ~~~~~~~~ help: remove any references to the binding | +LL ~ for (i, c) in v.iter() { +LL | LL ~ let ref_c = c; LL ~ let ref_i = i; | diff --git a/tests/ui/unnecessary_to_owned.stderr b/tests/ui/unnecessary_to_owned.stderr index 7ab1f667d9b..396802e16d5 100644 --- a/tests/ui/unnecessary_to_owned.stderr +++ b/tests/ui/unnecessary_to_owned.stderr @@ -519,14 +519,10 @@ error: unnecessary use of `to_vec` LL | for t in file_types.to_vec() { | ^^^^^^^^^^^^^^^^^^^ | -help: use - | -LL | for t in file_types { - | ~~~~~~~~~~ help: remove any references to the binding | -LL - let path = match get_file_path(&t) { -LL + let path = match get_file_path(t) { +LL ~ for t in file_types { +LL ~ let path = match get_file_path(t) { | error: unnecessary use of `to_vec` -- cgit 1.4.1-3-g733a5 From 5c200c225514ef98abaef295af027333b2f6765e Mon Sep 17 00:00:00 2001 From: Nicholas Nethercote Date: Wed, 11 Dec 2024 12:29:04 +1100 Subject: Simplify `RefTokenTreeCursor::look_ahead`. It's only ever used with a lookahead of 0, so this commit removes the lookahead and renames it `peek`. --- clippy_lints/src/crate_in_macro_def.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/clippy_lints/src/crate_in_macro_def.rs b/clippy_lints/src/crate_in_macro_def.rs index c8f81413728..76b88b746cb 100644 --- a/clippy_lints/src/crate_in_macro_def.rs +++ b/clippy_lints/src/crate_in_macro_def.rs @@ -86,7 +86,7 @@ fn contains_unhygienic_crate_reference(tts: &TokenStream) -> Option { while let Some(curr) = cursor.next() { if !prev_is_dollar && let Some(span) = is_crate_keyword(curr) - && let Some(next) = cursor.look_ahead(0) + && let Some(next) = cursor.peek() && is_token(next, &TokenKind::PathSep) { return Some(span); -- cgit 1.4.1-3-g733a5 From 1cb4dcafd1a65370af636f43f8f3a718e4bc66d1 Mon Sep 17 00:00:00 2001 From: Nicholas Nethercote Date: Wed, 11 Dec 2024 14:38:09 +1100 Subject: Rename `RefTokenTreeCursor`. Because `TokenStreamIter` is a much better name for a `TokenStream` iterator. Also rename the `TokenStream::trees` method as `TokenStream::iter`, and some local variables. --- clippy_lints/src/attrs/should_panic_without_expect.rs | 2 +- clippy_lints/src/crate_in_macro_def.rs | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/clippy_lints/src/attrs/should_panic_without_expect.rs b/clippy_lints/src/attrs/should_panic_without_expect.rs index b4ed8a68a32..fd27e30a67f 100644 --- a/clippy_lints/src/attrs/should_panic_without_expect.rs +++ b/clippy_lints/src/attrs/should_panic_without_expect.rs @@ -15,7 +15,7 @@ pub(super) fn check(cx: &EarlyContext<'_>, attr: &Attribute) { } if let AttrArgs::Delimited(args) = &normal_attr.item.args - && let mut tt_iter = args.tokens.trees() + && let mut tt_iter = args.tokens.iter() && let Some(TokenTree::Token( Token { kind: TokenKind::Ident(sym::expected, _), diff --git a/clippy_lints/src/crate_in_macro_def.rs b/clippy_lints/src/crate_in_macro_def.rs index 76b88b746cb..7d86bd3e540 100644 --- a/clippy_lints/src/crate_in_macro_def.rs +++ b/clippy_lints/src/crate_in_macro_def.rs @@ -82,11 +82,11 @@ fn is_macro_export(attr: &Attribute) -> bool { fn contains_unhygienic_crate_reference(tts: &TokenStream) -> Option { let mut prev_is_dollar = false; - let mut cursor = tts.trees(); - while let Some(curr) = cursor.next() { + let mut iter = tts.iter(); + while let Some(curr) = iter.next() { if !prev_is_dollar && let Some(span) = is_crate_keyword(curr) - && let Some(next) = cursor.peek() + && let Some(next) = iter.peek() && is_token(next, &TokenKind::PathSep) { return Some(span); -- cgit 1.4.1-3-g733a5 From f415510fba005a75d206f54807109471f4766d0b Mon Sep 17 00:00:00 2001 From: lcnr Date: Fri, 6 Dec 2024 14:46:28 +0100 Subject: introduce `LateParamRegionKind` --- clippy_lints/src/ptr.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/clippy_lints/src/ptr.rs b/clippy_lints/src/ptr.rs index 44a8789462b..b674b01406d 100644 --- a/clippy_lints/src/ptr.rs +++ b/clippy_lints/src/ptr.rs @@ -475,7 +475,7 @@ fn check_fn_args<'cx, 'tcx: 'cx>( .def_id, ), ty::ReBound(_, r) => r.kind.get_id(), - ty::ReLateParam(r) => r.bound_region.get_id(), + ty::ReLateParam(r) => r.kind.get_id(), ty::ReStatic | ty::ReVar(_) | ty::RePlaceholder(_) -- cgit 1.4.1-3-g733a5 From 1e0b59d6a610699e7108176a9380c73fbf62329d Mon Sep 17 00:00:00 2001 From: Oleksandr Polieno Date: Tue, 17 Dec 2024 17:57:43 +0700 Subject: Use multipart suggestion in unnecessary_to_owned --- tests/ui/unnecessary_to_owned.fixed | 587 +++++++++++++++++++++++++++++++++++ tests/ui/unnecessary_to_owned.rs | 2 - tests/ui/unnecessary_to_owned.stderr | 186 +++++------ 3 files changed, 680 insertions(+), 95 deletions(-) create mode 100644 tests/ui/unnecessary_to_owned.fixed diff --git a/tests/ui/unnecessary_to_owned.fixed b/tests/ui/unnecessary_to_owned.fixed new file mode 100644 index 00000000000..fdcac8fb08d --- /dev/null +++ b/tests/ui/unnecessary_to_owned.fixed @@ -0,0 +1,587 @@ +#![allow( + clippy::needless_borrow, + clippy::needless_borrows_for_generic_args, + clippy::ptr_arg, + clippy::manual_async_fn, + clippy::needless_lifetimes +)] +#![warn(clippy::unnecessary_to_owned, clippy::redundant_clone)] + +use std::borrow::Cow; +use std::ffi::{CStr, CString, OsStr, OsString}; +use std::ops::Deref; + +#[derive(Clone)] +struct X(String); + +impl Deref for X { + type Target = [u8]; + fn deref(&self) -> &[u8] { + self.0.as_bytes() + } +} + +impl AsRef for X { + fn as_ref(&self) -> &str { + self.0.as_str() + } +} + +#[allow(clippy::to_string_trait_impl)] +impl ToString for X { + fn to_string(&self) -> String { + self.0.to_string() + } +} + +impl X { + fn join(&self, other: impl AsRef) -> Self { + let mut s = self.0.clone(); + s.push_str(other.as_ref()); + Self(s) + } +} + +#[allow(dead_code)] +#[derive(Clone)] +enum FileType { + Account, + PrivateKey, + Certificate, +} + +fn main() { + let c_str = CStr::from_bytes_with_nul(&[0]).unwrap(); + let os_str = OsStr::new("x"); + let path = std::path::Path::new("x"); + let s = "x"; + let array = ["x"]; + let array_ref = &["x"]; + let slice = &["x"][..]; + let x = X(String::from("x")); + let x_ref = &x; + + require_c_str(&Cow::from(c_str)); + require_c_str(c_str); + + require_os_str(os_str); + require_os_str(&Cow::from(os_str)); + require_os_str(os_str); + + require_path(path); + require_path(&Cow::from(path)); + require_path(path); + + require_str(s); + require_str(&Cow::from(s)); + require_str(s); + require_str(x_ref.as_ref()); + + require_slice(slice); + require_slice(&Cow::from(slice)); + require_slice(array.as_ref()); + require_slice(array_ref.as_ref()); + require_slice(slice); + require_slice(&x_ref.to_owned()); // No longer flagged because of #8759. + + require_x(&Cow::::Owned(x.clone())); + require_x(&x_ref.to_owned()); // No longer flagged because of #8759. + + require_deref_c_str(c_str); + require_deref_os_str(os_str); + require_deref_path(path); + require_deref_str(s); + require_deref_slice(slice); + + require_impl_deref_c_str(c_str); + require_impl_deref_os_str(os_str); + require_impl_deref_path(path); + require_impl_deref_str(s); + require_impl_deref_slice(slice); + + require_deref_str_slice(s, slice); + require_deref_slice_str(slice, s); + + require_as_ref_c_str(c_str); + require_as_ref_os_str(os_str); + require_as_ref_path(path); + require_as_ref_str(s); + require_as_ref_str(&x); + require_as_ref_slice(array); + require_as_ref_slice(array_ref); + require_as_ref_slice(slice); + + require_impl_as_ref_c_str(c_str); + require_impl_as_ref_os_str(os_str); + require_impl_as_ref_path(path); + require_impl_as_ref_str(s); + require_impl_as_ref_str(&x); + require_impl_as_ref_slice(array); + require_impl_as_ref_slice(array_ref); + require_impl_as_ref_slice(slice); + + require_as_ref_str_slice(s, array); + require_as_ref_str_slice(s, array_ref); + require_as_ref_str_slice(s, slice); + require_as_ref_slice_str(array, s); + require_as_ref_slice_str(array_ref, s); + require_as_ref_slice_str(slice, s); + + let _ = x.join(x_ref); + + let _ = slice.iter().copied(); + let _ = slice.iter().copied(); + let _ = [std::path::PathBuf::new()][..].iter().cloned(); + let _ = [std::path::PathBuf::new()][..].iter().cloned(); + + let _ = slice.iter().copied(); + let _ = slice.iter().copied(); + let _ = [std::path::PathBuf::new()][..].iter().cloned(); + let _ = [std::path::PathBuf::new()][..].iter().cloned(); + + let _ = check_files(&[FileType::Account]); + + // negative tests + require_string(&s.to_string()); + require_string(&Cow::from(s).into_owned()); + require_string(&s.to_owned()); + require_string(&x_ref.to_string()); + + // `X` isn't copy. + require_slice(&x.to_owned()); + require_deref_slice(x.to_owned()); + + // The following should be flagged by `redundant_clone`, but not by this lint. + require_c_str(&CString::from_vec_with_nul(vec![0]).unwrap()); + require_os_str(&OsString::from("x")); + require_path(&std::path::PathBuf::from("x")); + require_str(&String::from("x")); + require_slice(&[String::from("x")]); + + let slice = [0u8; 1024]; + let _ref_str: &str = core::str::from_utf8(&slice).expect("not UTF-8"); + let _ref_str: &str = core::str::from_utf8(b"foo").unwrap(); + let _ref_str: &str = core::str::from_utf8(b"foo".as_slice()).unwrap(); + // Expression is of type `&String`, can't suggest `str::from_utf8` here + let _ref_string = &String::from_utf8(b"foo".to_vec()).unwrap(); + macro_rules! arg_from_macro { + () => { + b"foo".to_vec() + }; + } + macro_rules! string_from_utf8_from_macro { + () => { + &String::from_utf8(b"foo".to_vec()).unwrap() + }; + } + let _ref_str: &str = &String::from_utf8(arg_from_macro!()).unwrap(); + let _ref_str: &str = string_from_utf8_from_macro!(); +} + +fn require_c_str(_: &CStr) {} +fn require_os_str(_: &OsStr) {} +fn require_path(_: &std::path::Path) {} +fn require_str(_: &str) {} +fn require_slice(_: &[T]) {} +fn require_x(_: &X) {} + +fn require_deref_c_str>(_: T) {} +fn require_deref_os_str>(_: T) {} +fn require_deref_path>(_: T) {} +fn require_deref_str>(_: T) {} +fn require_deref_slice>(_: U) {} + +fn require_impl_deref_c_str(_: impl Deref) {} +fn require_impl_deref_os_str(_: impl Deref) {} +fn require_impl_deref_path(_: impl Deref) {} +fn require_impl_deref_str(_: impl Deref) {} +fn require_impl_deref_slice(_: impl Deref) {} + +fn require_deref_str_slice, U, V: Deref>(_: T, _: V) {} +fn require_deref_slice_str, V: Deref>(_: U, _: V) {} + +fn require_as_ref_c_str>(_: T) {} +fn require_as_ref_os_str>(_: T) {} +fn require_as_ref_path>(_: T) {} +fn require_as_ref_str>(_: T) {} +fn require_as_ref_slice>(_: U) {} + +fn require_impl_as_ref_c_str(_: impl AsRef) {} +fn require_impl_as_ref_os_str(_: impl AsRef) {} +fn require_impl_as_ref_path(_: impl AsRef) {} +fn require_impl_as_ref_str(_: impl AsRef) {} +fn require_impl_as_ref_slice(_: impl AsRef<[T]>) {} + +fn require_as_ref_str_slice, U, V: AsRef<[U]>>(_: T, _: V) {} +fn require_as_ref_slice_str, V: AsRef>(_: U, _: V) {} + +// `check_files` is based on: +// https://github.com/breard-r/acmed/blob/1f0dcc32aadbc5e52de6d23b9703554c0f925113/acmed/src/storage.rs#L262 +fn check_files(file_types: &[FileType]) -> bool { + for t in file_types { + let path = match get_file_path(t) { + Ok(p) => p, + Err(_) => { + return false; + }, + }; + if !path.is_file() { + return false; + } + } + true +} + +fn get_file_path(_file_type: &FileType) -> Result { + Ok(std::path::PathBuf::new()) +} + +fn require_string(_: &String) {} + +#[clippy::msrv = "1.35"] +fn _msrv_1_35() { + // `copied` was stabilized in 1.36, so clippy should use `cloned`. + let _ = &["x"][..].iter().cloned(); +} + +#[clippy::msrv = "1.36"] +fn _msrv_1_36() { + let _ = &["x"][..].iter().copied(); +} + +// https://github.com/rust-lang/rust-clippy/issues/8507 +mod issue_8507 { + #![allow(dead_code)] + + struct Opaque

(P); + + pub trait Abstracted {} + + impl

Abstracted for Opaque

{} + + fn build

(p: P) -> Opaque

+ where + P: AsRef, + { + Opaque(p) + } + + // Should not lint. + fn test_str(s: &str) -> Box { + Box::new(build(s.to_string())) + } + + // Should not lint. + fn test_x(x: super::X) -> Box { + Box::new(build(x)) + } + + #[derive(Clone, Copy)] + struct Y(&'static str); + + impl AsRef for Y { + fn as_ref(&self) -> &str { + self.0 + } + } + + #[allow(clippy::to_string_trait_impl)] + impl ToString for Y { + fn to_string(&self) -> String { + self.0.to_string() + } + } + + // Should lint because Y is copy. + fn test_y(y: Y) -> Box { + Box::new(build(y)) + } +} + +// https://github.com/rust-lang/rust-clippy/issues/8759 +mod issue_8759 { + #![allow(dead_code)] + + #[derive(Default)] + struct View {} + + impl std::borrow::ToOwned for View { + type Owned = View; + fn to_owned(&self) -> Self::Owned { + View {} + } + } + + #[derive(Default)] + struct RenderWindow { + default_view: View, + } + + impl RenderWindow { + fn default_view(&self) -> &View { + &self.default_view + } + fn set_view(&mut self, _view: &View) {} + } + + fn main() { + let mut rw = RenderWindow::default(); + rw.set_view(&rw.default_view().to_owned()); + } +} + +mod issue_8759_variant { + #![allow(dead_code)] + + #[derive(Clone, Default)] + struct View {} + + #[derive(Default)] + struct RenderWindow { + default_view: View, + } + + impl RenderWindow { + fn default_view(&self) -> &View { + &self.default_view + } + fn set_view(&mut self, _view: &View) {} + } + + fn main() { + let mut rw = RenderWindow::default(); + rw.set_view(&rw.default_view().to_owned()); + } +} + +mod issue_9317 { + #![allow(dead_code)] + + struct Bytes {} + + #[allow(clippy::to_string_trait_impl)] + impl ToString for Bytes { + fn to_string(&self) -> String { + "123".to_string() + } + } + + impl AsRef<[u8]> for Bytes { + fn as_ref(&self) -> &[u8] { + &[1, 2, 3] + } + } + + fn consume>(c: C) { + let _ = c; + } + + pub fn main() { + let b = Bytes {}; + // Should not lint. + consume(b.to_string()); + } +} + +mod issue_9351 { + #![allow(dead_code)] + + use std::ops::Deref; + use std::path::{Path, PathBuf}; + + fn require_deref_path>(x: T) -> T { + x + } + + fn generic_arg_used_elsewhere>(_x: T, _y: T) {} + + fn id>(x: T) -> T { + x + } + + fn predicates_are_satisfied(_x: impl std::fmt::Write) {} + + // Should lint + fn single_return() -> impl AsRef { + id("abc") + } + + // Should not lint + fn multiple_returns(b: bool) -> impl AsRef { + if b { + return String::new(); + } + + id("abc".to_string()) + } + + struct S1(String); + + // Should not lint + fn fields1() -> S1 { + S1(id("abc".to_string())) + } + + struct S2 { + s: String, + } + + // Should not lint + fn fields2() { + let mut s = S2 { s: "abc".into() }; + s.s = id("abc".to_string()); + } + + pub fn main() { + let path = std::path::Path::new("x"); + let path_buf = path.to_owned(); + + // Should not lint. + let _x: PathBuf = require_deref_path(path.to_owned()); + generic_arg_used_elsewhere(path.to_owned(), path_buf); + predicates_are_satisfied(id("abc".to_string())); + } +} + +mod issue_9504 { + #![allow(dead_code)] + + async fn foo>(_: S) {} + async fn bar() { + foo(std::path::PathBuf::new().to_string_lossy().to_string()).await; + } +} + +mod issue_9771a { + #![allow(dead_code)] + + use std::marker::PhantomData; + + pub struct Key, V: ?Sized>(K, PhantomData); + + impl, V: ?Sized> Key { + pub fn new(key: K) -> Key { + Key(key, PhantomData) + } + } + + pub fn pkh(pkh: &[u8]) -> Key, String> { + Key::new([b"pkh-", pkh].concat().to_vec()) + } +} + +mod issue_9771b { + #![allow(dead_code)] + + pub struct Key>(K); + + pub fn from(c: &[u8]) -> Key> { + let v = [c].concat(); + Key(v.to_vec()) + } +} + +// This is a watered down version of the code in: https://github.com/oxigraph/rio +// The ICE is triggered by the call to `to_owned` on this line: +// https://github.com/oxigraph/rio/blob/66635b9ff8e5423e58932353fa40d6e64e4820f7/testsuite/src/parser_evaluator.rs#L116 +mod issue_10021 { + #![allow(unused)] + + pub struct Iri(T); + + impl> Iri { + pub fn parse(iri: T) -> Result { + unimplemented!() + } + } + + pub fn parse_w3c_rdf_test_file(url: &str) -> Result<(), ()> { + let base_iri = Iri::parse(url.to_owned())?; + Ok(()) + } +} + +mod issue_10033 { + #![allow(dead_code)] + use std::fmt::Display; + use std::ops::Deref; + + fn _main() { + let f = Foo; + + // Not actually unnecessary - this calls `Foo`'s `Display` impl, not `str`'s (even though `Foo` does + // deref to `str`) + foo(&f.to_string()); + } + + fn foo(s: &str) { + println!("{}", s); + } + + struct Foo; + + impl Deref for Foo { + type Target = str; + + fn deref(&self) -> &Self::Target { + "str" + } + } + + impl Display for Foo { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + write!(f, "Foo") + } + } +} + +mod issue_11952 { + use core::future::{Future, IntoFuture}; + + fn foo<'a, T: AsRef<[u8]>>(x: T, y: &'a i32) -> impl 'a + Future> { + async move { + let _y = y; + Ok(()) + } + } + + fn bar() { + IntoFuture::into_future(foo([], &0)); + } +} + +fn borrow_checks() { + use std::borrow::Borrow; + use std::collections::HashSet; + + fn inner(a: &[&str]) { + let mut s = HashSet::from([vec!["a"]]); + s.remove(a); //~ ERROR: unnecessary use of `to_vec` + } + + let mut s = HashSet::from(["a".to_string()]); + s.remove("b"); //~ ERROR: unnecessary use of `to_owned` + s.remove("b"); //~ ERROR: unnecessary use of `to_string` + // Should not warn. + s.remove("b"); + + let mut s = HashSet::from([vec!["a"]]); + s.remove(["b"].as_slice()); //~ ERROR: unnecessary use of `to_vec` + s.remove((&["b"]).as_slice()); //~ ERROR: unnecessary use of `to_vec` + + // Should not warn. + s.remove(&["b"].to_vec().clone()); + s.remove(["a"].as_slice()); + + trait SetExt { + fn foo>(&self, _: &String); + } + + impl SetExt for HashSet { + fn foo>(&self, _: &String) {} + } + + // Should not lint! + HashSet::::new().foo::<&str>(&"".to_owned()); + HashSet::::new().get(&1.to_string()); +} diff --git a/tests/ui/unnecessary_to_owned.rs b/tests/ui/unnecessary_to_owned.rs index da0c761f795..10a9727a9a7 100644 --- a/tests/ui/unnecessary_to_owned.rs +++ b/tests/ui/unnecessary_to_owned.rs @@ -7,8 +7,6 @@ )] #![warn(clippy::unnecessary_to_owned, clippy::redundant_clone)] -//@no-rustfix: need to change the suggestion to a multipart suggestion - use std::borrow::Cow; use std::ffi::{CStr, CString, OsStr, OsString}; use std::ops::Deref; diff --git a/tests/ui/unnecessary_to_owned.stderr b/tests/ui/unnecessary_to_owned.stderr index 396802e16d5..498ac68cdaa 100644 --- a/tests/ui/unnecessary_to_owned.stderr +++ b/tests/ui/unnecessary_to_owned.stderr @@ -1,11 +1,11 @@ error: redundant clone - --> tests/ui/unnecessary_to_owned.rs:157:64 + --> tests/ui/unnecessary_to_owned.rs:155:64 | LL | require_c_str(&CString::from_vec_with_nul(vec![0]).unwrap().to_owned()); | ^^^^^^^^^^^ help: remove this | note: this value is dropped without further use - --> tests/ui/unnecessary_to_owned.rs:157:20 + --> tests/ui/unnecessary_to_owned.rs:155:20 | LL | require_c_str(&CString::from_vec_with_nul(vec![0]).unwrap().to_owned()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -13,55 +13,55 @@ LL | require_c_str(&CString::from_vec_with_nul(vec![0]).unwrap().to_owned()) = help: to override `-D warnings` add `#[allow(clippy::redundant_clone)]` error: redundant clone - --> tests/ui/unnecessary_to_owned.rs:158:40 + --> tests/ui/unnecessary_to_owned.rs:156:40 | LL | require_os_str(&OsString::from("x").to_os_string()); | ^^^^^^^^^^^^^^^ help: remove this | note: this value is dropped without further use - --> tests/ui/unnecessary_to_owned.rs:158:21 + --> tests/ui/unnecessary_to_owned.rs:156:21 | LL | require_os_str(&OsString::from("x").to_os_string()); | ^^^^^^^^^^^^^^^^^^^ error: redundant clone - --> tests/ui/unnecessary_to_owned.rs:159:48 + --> tests/ui/unnecessary_to_owned.rs:157:48 | LL | require_path(&std::path::PathBuf::from("x").to_path_buf()); | ^^^^^^^^^^^^^^ help: remove this | note: this value is dropped without further use - --> tests/ui/unnecessary_to_owned.rs:159:19 + --> tests/ui/unnecessary_to_owned.rs:157:19 | LL | require_path(&std::path::PathBuf::from("x").to_path_buf()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: redundant clone - --> tests/ui/unnecessary_to_owned.rs:160:35 + --> tests/ui/unnecessary_to_owned.rs:158:35 | LL | require_str(&String::from("x").to_string()); | ^^^^^^^^^^^^ help: remove this | note: this value is dropped without further use - --> tests/ui/unnecessary_to_owned.rs:160:18 + --> tests/ui/unnecessary_to_owned.rs:158:18 | LL | require_str(&String::from("x").to_string()); | ^^^^^^^^^^^^^^^^^ error: redundant clone - --> tests/ui/unnecessary_to_owned.rs:161:39 + --> tests/ui/unnecessary_to_owned.rs:159:39 | LL | require_slice(&[String::from("x")].to_owned()); | ^^^^^^^^^^^ help: remove this | note: this value is dropped without further use - --> tests/ui/unnecessary_to_owned.rs:161:20 + --> tests/ui/unnecessary_to_owned.rs:159:20 | LL | require_slice(&[String::from("x")].to_owned()); | ^^^^^^^^^^^^^^^^^^^ error: unnecessary use of `into_owned` - --> tests/ui/unnecessary_to_owned.rs:66:36 + --> tests/ui/unnecessary_to_owned.rs:64:36 | LL | require_c_str(&Cow::from(c_str).into_owned()); | ^^^^^^^^^^^^^ help: remove this @@ -70,415 +70,415 @@ LL | require_c_str(&Cow::from(c_str).into_owned()); = help: to override `-D warnings` add `#[allow(clippy::unnecessary_to_owned)]` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:67:19 + --> tests/ui/unnecessary_to_owned.rs:65:19 | LL | require_c_str(&c_str.to_owned()); | ^^^^^^^^^^^^^^^^^ help: use: `c_str` error: unnecessary use of `to_os_string` - --> tests/ui/unnecessary_to_owned.rs:69:20 + --> tests/ui/unnecessary_to_owned.rs:67:20 | LL | require_os_str(&os_str.to_os_string()); | ^^^^^^^^^^^^^^^^^^^^^^ help: use: `os_str` error: unnecessary use of `into_owned` - --> tests/ui/unnecessary_to_owned.rs:70:38 + --> tests/ui/unnecessary_to_owned.rs:68:38 | LL | require_os_str(&Cow::from(os_str).into_owned()); | ^^^^^^^^^^^^^ help: remove this error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:71:20 + --> tests/ui/unnecessary_to_owned.rs:69:20 | LL | require_os_str(&os_str.to_owned()); | ^^^^^^^^^^^^^^^^^^ help: use: `os_str` error: unnecessary use of `to_path_buf` - --> tests/ui/unnecessary_to_owned.rs:73:18 + --> tests/ui/unnecessary_to_owned.rs:71:18 | LL | require_path(&path.to_path_buf()); | ^^^^^^^^^^^^^^^^^^^ help: use: `path` error: unnecessary use of `into_owned` - --> tests/ui/unnecessary_to_owned.rs:74:34 + --> tests/ui/unnecessary_to_owned.rs:72:34 | LL | require_path(&Cow::from(path).into_owned()); | ^^^^^^^^^^^^^ help: remove this error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:75:18 + --> tests/ui/unnecessary_to_owned.rs:73:18 | LL | require_path(&path.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `path` error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:77:17 + --> tests/ui/unnecessary_to_owned.rs:75:17 | LL | require_str(&s.to_string()); | ^^^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `into_owned` - --> tests/ui/unnecessary_to_owned.rs:78:30 + --> tests/ui/unnecessary_to_owned.rs:76:30 | LL | require_str(&Cow::from(s).into_owned()); | ^^^^^^^^^^^^^ help: remove this error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:79:17 + --> tests/ui/unnecessary_to_owned.rs:77:17 | LL | require_str(&s.to_owned()); | ^^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:80:17 + --> tests/ui/unnecessary_to_owned.rs:78:17 | LL | require_str(&x_ref.to_string()); | ^^^^^^^^^^^^^^^^^^ help: use: `x_ref.as_ref()` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:82:19 + --> tests/ui/unnecessary_to_owned.rs:80:19 | LL | require_slice(&slice.to_vec()); | ^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `into_owned` - --> tests/ui/unnecessary_to_owned.rs:83:36 + --> tests/ui/unnecessary_to_owned.rs:81:36 | LL | require_slice(&Cow::from(slice).into_owned()); | ^^^^^^^^^^^^^ help: remove this error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:84:19 + --> tests/ui/unnecessary_to_owned.rs:82:19 | LL | require_slice(&array.to_owned()); | ^^^^^^^^^^^^^^^^^ help: use: `array.as_ref()` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:85:19 + --> tests/ui/unnecessary_to_owned.rs:83:19 | LL | require_slice(&array_ref.to_owned()); | ^^^^^^^^^^^^^^^^^^^^^ help: use: `array_ref.as_ref()` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:86:19 + --> tests/ui/unnecessary_to_owned.rs:84:19 | LL | require_slice(&slice.to_owned()); | ^^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `into_owned` - --> tests/ui/unnecessary_to_owned.rs:89:42 + --> tests/ui/unnecessary_to_owned.rs:87:42 | LL | require_x(&Cow::::Owned(x.clone()).into_owned()); | ^^^^^^^^^^^^^ help: remove this error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:92:25 + --> tests/ui/unnecessary_to_owned.rs:90:25 | LL | require_deref_c_str(c_str.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `c_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:93:26 + --> tests/ui/unnecessary_to_owned.rs:91:26 | LL | require_deref_os_str(os_str.to_owned()); | ^^^^^^^^^^^^^^^^^ help: use: `os_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:94:24 + --> tests/ui/unnecessary_to_owned.rs:92:24 | LL | require_deref_path(path.to_owned()); | ^^^^^^^^^^^^^^^ help: use: `path` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:95:23 + --> tests/ui/unnecessary_to_owned.rs:93:23 | LL | require_deref_str(s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:96:25 + --> tests/ui/unnecessary_to_owned.rs:94:25 | LL | require_deref_slice(slice.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:98:30 + --> tests/ui/unnecessary_to_owned.rs:96:30 | LL | require_impl_deref_c_str(c_str.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `c_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:99:31 + --> tests/ui/unnecessary_to_owned.rs:97:31 | LL | require_impl_deref_os_str(os_str.to_owned()); | ^^^^^^^^^^^^^^^^^ help: use: `os_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:100:29 + --> tests/ui/unnecessary_to_owned.rs:98:29 | LL | require_impl_deref_path(path.to_owned()); | ^^^^^^^^^^^^^^^ help: use: `path` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:101:28 + --> tests/ui/unnecessary_to_owned.rs:99:28 | LL | require_impl_deref_str(s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:102:30 + --> tests/ui/unnecessary_to_owned.rs:100:30 | LL | require_impl_deref_slice(slice.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:104:29 + --> tests/ui/unnecessary_to_owned.rs:102:29 | LL | require_deref_str_slice(s.to_owned(), slice.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:104:43 + --> tests/ui/unnecessary_to_owned.rs:102:43 | LL | require_deref_str_slice(s.to_owned(), slice.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:105:29 + --> tests/ui/unnecessary_to_owned.rs:103:29 | LL | require_deref_slice_str(slice.to_owned(), s.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:105:47 + --> tests/ui/unnecessary_to_owned.rs:103:47 | LL | require_deref_slice_str(slice.to_owned(), s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:107:26 + --> tests/ui/unnecessary_to_owned.rs:105:26 | LL | require_as_ref_c_str(c_str.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `c_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:108:27 + --> tests/ui/unnecessary_to_owned.rs:106:27 | LL | require_as_ref_os_str(os_str.to_owned()); | ^^^^^^^^^^^^^^^^^ help: use: `os_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:109:25 + --> tests/ui/unnecessary_to_owned.rs:107:25 | LL | require_as_ref_path(path.to_owned()); | ^^^^^^^^^^^^^^^ help: use: `path` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:110:24 + --> tests/ui/unnecessary_to_owned.rs:108:24 | LL | require_as_ref_str(s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:111:24 + --> tests/ui/unnecessary_to_owned.rs:109:24 | LL | require_as_ref_str(x.to_owned()); | ^^^^^^^^^^^^ help: use: `&x` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:112:26 + --> tests/ui/unnecessary_to_owned.rs:110:26 | LL | require_as_ref_slice(array.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `array` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:113:26 + --> tests/ui/unnecessary_to_owned.rs:111:26 | LL | require_as_ref_slice(array_ref.to_owned()); | ^^^^^^^^^^^^^^^^^^^^ help: use: `array_ref` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:114:26 + --> tests/ui/unnecessary_to_owned.rs:112:26 | LL | require_as_ref_slice(slice.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:116:31 + --> tests/ui/unnecessary_to_owned.rs:114:31 | LL | require_impl_as_ref_c_str(c_str.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `c_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:117:32 + --> tests/ui/unnecessary_to_owned.rs:115:32 | LL | require_impl_as_ref_os_str(os_str.to_owned()); | ^^^^^^^^^^^^^^^^^ help: use: `os_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:118:30 + --> tests/ui/unnecessary_to_owned.rs:116:30 | LL | require_impl_as_ref_path(path.to_owned()); | ^^^^^^^^^^^^^^^ help: use: `path` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:119:29 + --> tests/ui/unnecessary_to_owned.rs:117:29 | LL | require_impl_as_ref_str(s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:120:29 + --> tests/ui/unnecessary_to_owned.rs:118:29 | LL | require_impl_as_ref_str(x.to_owned()); | ^^^^^^^^^^^^ help: use: `&x` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:121:31 + --> tests/ui/unnecessary_to_owned.rs:119:31 | LL | require_impl_as_ref_slice(array.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `array` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:122:31 + --> tests/ui/unnecessary_to_owned.rs:120:31 | LL | require_impl_as_ref_slice(array_ref.to_owned()); | ^^^^^^^^^^^^^^^^^^^^ help: use: `array_ref` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:123:31 + --> tests/ui/unnecessary_to_owned.rs:121:31 | LL | require_impl_as_ref_slice(slice.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:125:30 + --> tests/ui/unnecessary_to_owned.rs:123:30 | LL | require_as_ref_str_slice(s.to_owned(), array.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:125:44 + --> tests/ui/unnecessary_to_owned.rs:123:44 | LL | require_as_ref_str_slice(s.to_owned(), array.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `array` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:126:30 + --> tests/ui/unnecessary_to_owned.rs:124:30 | LL | require_as_ref_str_slice(s.to_owned(), array_ref.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:126:44 + --> tests/ui/unnecessary_to_owned.rs:124:44 | LL | require_as_ref_str_slice(s.to_owned(), array_ref.to_owned()); | ^^^^^^^^^^^^^^^^^^^^ help: use: `array_ref` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:127:30 + --> tests/ui/unnecessary_to_owned.rs:125:30 | LL | require_as_ref_str_slice(s.to_owned(), slice.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:127:44 + --> tests/ui/unnecessary_to_owned.rs:125:44 | LL | require_as_ref_str_slice(s.to_owned(), slice.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:128:30 + --> tests/ui/unnecessary_to_owned.rs:126:30 | LL | require_as_ref_slice_str(array.to_owned(), s.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `array` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:128:48 + --> tests/ui/unnecessary_to_owned.rs:126:48 | LL | require_as_ref_slice_str(array.to_owned(), s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:129:30 + --> tests/ui/unnecessary_to_owned.rs:127:30 | LL | require_as_ref_slice_str(array_ref.to_owned(), s.to_owned()); | ^^^^^^^^^^^^^^^^^^^^ help: use: `array_ref` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:129:52 + --> tests/ui/unnecessary_to_owned.rs:127:52 | LL | require_as_ref_slice_str(array_ref.to_owned(), s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:130:30 + --> tests/ui/unnecessary_to_owned.rs:128:30 | LL | require_as_ref_slice_str(slice.to_owned(), s.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:130:48 + --> tests/ui/unnecessary_to_owned.rs:128:48 | LL | require_as_ref_slice_str(slice.to_owned(), s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:132:20 + --> tests/ui/unnecessary_to_owned.rs:130:20 | LL | let _ = x.join(&x_ref.to_string()); | ^^^^^^^^^^^^^^^^^^ help: use: `x_ref` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:134:13 + --> tests/ui/unnecessary_to_owned.rs:132:13 | LL | let _ = slice.to_vec().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `slice.iter().copied()` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:135:13 + --> tests/ui/unnecessary_to_owned.rs:133:13 | LL | let _ = slice.to_owned().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `slice.iter().copied()` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:136:13 + --> tests/ui/unnecessary_to_owned.rs:134:13 | LL | let _ = [std::path::PathBuf::new()][..].to_vec().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `[std::path::PathBuf::new()][..].iter().cloned()` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:137:13 + --> tests/ui/unnecessary_to_owned.rs:135:13 | LL | let _ = [std::path::PathBuf::new()][..].to_owned().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `[std::path::PathBuf::new()][..].iter().cloned()` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:139:13 + --> tests/ui/unnecessary_to_owned.rs:137:13 | LL | let _ = IntoIterator::into_iter(slice.to_vec()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `slice.iter().copied()` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:140:13 + --> tests/ui/unnecessary_to_owned.rs:138:13 | LL | let _ = IntoIterator::into_iter(slice.to_owned()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `slice.iter().copied()` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:141:13 + --> tests/ui/unnecessary_to_owned.rs:139:13 | LL | let _ = IntoIterator::into_iter([std::path::PathBuf::new()][..].to_vec()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `[std::path::PathBuf::new()][..].iter().cloned()` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:142:13 + --> tests/ui/unnecessary_to_owned.rs:140:13 | LL | let _ = IntoIterator::into_iter([std::path::PathBuf::new()][..].to_owned()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `[std::path::PathBuf::new()][..].iter().cloned()` error: allocating a new `String` only to create a temporary `&str` from it - --> tests/ui/unnecessary_to_owned.rs:164:26 + --> tests/ui/unnecessary_to_owned.rs:162:26 | LL | let _ref_str: &str = &String::from_utf8(slice.to_vec()).expect("not UTF-8"); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -490,7 +490,7 @@ LL + let _ref_str: &str = core::str::from_utf8(&slice).expect("not UTF-8"); | error: allocating a new `String` only to create a temporary `&str` from it - --> tests/ui/unnecessary_to_owned.rs:165:26 + --> tests/ui/unnecessary_to_owned.rs:163:26 | LL | let _ref_str: &str = &String::from_utf8(b"foo".to_vec()).unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -502,7 +502,7 @@ LL + let _ref_str: &str = core::str::from_utf8(b"foo").unwrap(); | error: allocating a new `String` only to create a temporary `&str` from it - --> tests/ui/unnecessary_to_owned.rs:166:26 + --> tests/ui/unnecessary_to_owned.rs:164:26 | LL | let _ref_str: &str = &String::from_utf8(b"foo".as_slice().to_owned()).unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -514,7 +514,7 @@ LL + let _ref_str: &str = core::str::from_utf8(b"foo".as_slice()).unwrap(); | error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:223:14 + --> tests/ui/unnecessary_to_owned.rs:221:14 | LL | for t in file_types.to_vec() { | ^^^^^^^^^^^^^^^^^^^ @@ -526,61 +526,61 @@ LL ~ let path = match get_file_path(t) { | error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:246:14 + --> tests/ui/unnecessary_to_owned.rs:244:14 | LL | let _ = &["x"][..].to_vec().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `["x"][..].iter().cloned()` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:251:14 + --> tests/ui/unnecessary_to_owned.rs:249:14 | LL | let _ = &["x"][..].to_vec().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `["x"][..].iter().copied()` error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:299:24 + --> tests/ui/unnecessary_to_owned.rs:297:24 | LL | Box::new(build(y.to_string())) | ^^^^^^^^^^^^^ help: use: `y` error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:408:12 + --> tests/ui/unnecessary_to_owned.rs:406:12 | LL | id("abc".to_string()) | ^^^^^^^^^^^^^^^^^ help: use: `"abc"` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:551:37 + --> tests/ui/unnecessary_to_owned.rs:549:37 | LL | IntoFuture::into_future(foo([].to_vec(), &0)); | ^^^^^^^^^^^ help: use: `[]` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:561:18 + --> tests/ui/unnecessary_to_owned.rs:559:18 | LL | s.remove(&a.to_vec()); | ^^^^^^^^^^^ help: replace it with: `a` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:565:14 + --> tests/ui/unnecessary_to_owned.rs:563:14 | LL | s.remove(&"b".to_owned()); | ^^^^^^^^^^^^^^^ help: replace it with: `"b"` error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:566:14 + --> tests/ui/unnecessary_to_owned.rs:564:14 | LL | s.remove(&"b".to_string()); | ^^^^^^^^^^^^^^^^ help: replace it with: `"b"` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:571:14 + --> tests/ui/unnecessary_to_owned.rs:569:14 | LL | s.remove(&["b"].to_vec()); | ^^^^^^^^^^^^^^^ help: replace it with: `["b"].as_slice()` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:572:14 + --> tests/ui/unnecessary_to_owned.rs:570:14 | LL | s.remove(&(&["b"]).to_vec()); | ^^^^^^^^^^^^^^^^^^ help: replace it with: `(&["b"]).as_slice()` -- cgit 1.4.1-3-g733a5 From 6f6ddd299c5ab87a8df5404d9ccbd16a5f358aa8 Mon Sep 17 00:00:00 2001 From: Alexey Semenyuk Date: Fri, 20 Dec 2024 00:58:03 +0500 Subject: Add allow-indexing-slicing-in-tests option --- CHANGELOG.md | 1 + book/src/lint_configuration.md | 10 ++++++++++ clippy_config/src/conf.rs | 3 +++ clippy_lints/src/indexing_slicing.rs | 13 ++++++++++++- tests/ui-toml/indexing_slicing/clippy.toml | 1 + tests/ui-toml/indexing_slicing/indexing_slicing.rs | 19 +++++++++++++++++++ .../ui-toml/indexing_slicing/indexing_slicing.stderr | 12 ++++++++++++ .../ui-toml/toml_unknown_key/conf_unknown_key.stderr | 3 +++ 8 files changed, 61 insertions(+), 1 deletion(-) create mode 100644 tests/ui-toml/indexing_slicing/clippy.toml create mode 100644 tests/ui-toml/indexing_slicing/indexing_slicing.rs create mode 100644 tests/ui-toml/indexing_slicing/indexing_slicing.stderr diff --git a/CHANGELOG.md b/CHANGELOG.md index cc966972939..b8e5dc66365 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -6213,6 +6213,7 @@ Released 2018-09-13 [`allow-comparison-to-zero`]: https://doc.rust-lang.org/clippy/lint_configuration.html#allow-comparison-to-zero [`allow-dbg-in-tests`]: https://doc.rust-lang.org/clippy/lint_configuration.html#allow-dbg-in-tests [`allow-expect-in-tests`]: https://doc.rust-lang.org/clippy/lint_configuration.html#allow-expect-in-tests +[`allow-indexing-slicing-in-tests`]: https://doc.rust-lang.org/clippy/lint_configuration.html#allow-indexing-slicing-in-tests [`allow-mixed-uninlined-format-args`]: https://doc.rust-lang.org/clippy/lint_configuration.html#allow-mixed-uninlined-format-args [`allow-one-hash-in-raw-strings`]: https://doc.rust-lang.org/clippy/lint_configuration.html#allow-one-hash-in-raw-strings [`allow-panic-in-tests`]: https://doc.rust-lang.org/clippy/lint_configuration.html#allow-panic-in-tests diff --git a/book/src/lint_configuration.md b/book/src/lint_configuration.md index 275d125096e..ea1d7d11389 100644 --- a/book/src/lint_configuration.md +++ b/book/src/lint_configuration.md @@ -81,6 +81,16 @@ Whether `expect` should be allowed in test functions or `#[cfg(test)]` * [`expect_used`](https://rust-lang.github.io/rust-clippy/master/index.html#expect_used) +## `allow-indexing-slicing-in-tests` +Whether `indexing_slicing` should be allowed in test functions or `#[cfg(test)]` + +**Default Value:** `false` + +--- +**Affected lints:** +* [`indexing_slicing`](https://rust-lang.github.io/rust-clippy/master/index.html#indexing_slicing) + + ## `allow-mixed-uninlined-format-args` Whether to allow mixed uninlined format args, e.g. `format!("{} {}", a, foo.bar)` diff --git a/clippy_config/src/conf.rs b/clippy_config/src/conf.rs index 41b56b45d9a..bffa04f6f09 100644 --- a/clippy_config/src/conf.rs +++ b/clippy_config/src/conf.rs @@ -291,6 +291,9 @@ define_Conf! { /// Whether `expect` should be allowed in test functions or `#[cfg(test)]` #[lints(expect_used)] allow_expect_in_tests: bool = false, + /// Whether `indexing_slicing` should be allowed in test functions or `#[cfg(test)]` + #[lints(indexing_slicing)] + allow_indexing_slicing_in_tests: bool = false, /// Whether to allow mixed uninlined format args, e.g. `format!("{} {}", a, foo.bar)` #[lints(uninlined_format_args)] allow_mixed_uninlined_format_args: bool = true, diff --git a/clippy_lints/src/indexing_slicing.rs b/clippy_lints/src/indexing_slicing.rs index 15203b35b13..21b8aeefe22 100644 --- a/clippy_lints/src/indexing_slicing.rs +++ b/clippy_lints/src/indexing_slicing.rs @@ -2,7 +2,7 @@ use clippy_config::Conf; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::{span_lint, span_lint_and_then}; use clippy_utils::ty::{deref_chain, get_adt_inherent_method}; -use clippy_utils::{higher, is_from_proc_macro}; +use clippy_utils::{higher, is_from_proc_macro, is_in_test}; use rustc_ast::ast::RangeLimits; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; @@ -89,12 +89,14 @@ declare_clippy_lint! { impl_lint_pass!(IndexingSlicing => [INDEXING_SLICING, OUT_OF_BOUNDS_INDEXING]); pub struct IndexingSlicing { + allow_indexing_slicing_in_tests: bool, suppress_restriction_lint_in_const: bool, } impl IndexingSlicing { pub fn new(conf: &'static Conf) -> Self { Self { + allow_indexing_slicing_in_tests: conf.allow_indexing_slicing_in_tests, suppress_restriction_lint_in_const: conf.suppress_restriction_lint_in_const, } } @@ -115,6 +117,7 @@ impl<'tcx> LateLintPass<'tcx> for IndexingSlicing { { let note = "the suggestion might not be applicable in constant blocks"; let ty = cx.typeck_results().expr_ty(array).peel_refs(); + let allowed_in_tests = self.allow_indexing_slicing_in_tests && is_in_test(cx.tcx, expr.hir_id); if let Some(range) = higher::Range::hir(index) { // Ranged indexes, i.e., &x[n..m], &x[n..], &x[..n] and &x[..] if let ty::Array(_, s) = ty.kind() { @@ -164,6 +167,10 @@ impl<'tcx> LateLintPass<'tcx> for IndexingSlicing { (None, None) => return, // [..] is ok. }; + if allowed_in_tests { + return; + } + span_lint_and_then(cx, INDEXING_SLICING, expr.span, "slicing may panic", |diag| { diag.help(help_msg); @@ -202,6 +209,10 @@ impl<'tcx> LateLintPass<'tcx> for IndexingSlicing { } } + if allowed_in_tests { + return; + } + span_lint_and_then(cx, INDEXING_SLICING, expr.span, "indexing may panic", |diag| { diag.help("consider using `.get(n)` or `.get_mut(n)` instead"); diff --git a/tests/ui-toml/indexing_slicing/clippy.toml b/tests/ui-toml/indexing_slicing/clippy.toml new file mode 100644 index 00000000000..7e83868332f --- /dev/null +++ b/tests/ui-toml/indexing_slicing/clippy.toml @@ -0,0 +1 @@ +allow-indexing-slicing-in-tests = true diff --git a/tests/ui-toml/indexing_slicing/indexing_slicing.rs b/tests/ui-toml/indexing_slicing/indexing_slicing.rs new file mode 100644 index 00000000000..0a0da88ea1f --- /dev/null +++ b/tests/ui-toml/indexing_slicing/indexing_slicing.rs @@ -0,0 +1,19 @@ +//@compile-flags: --test +#![warn(clippy::indexing_slicing)] +#![allow(clippy::no_effect)] + +fn main() { + let x = [1, 2, 3, 4]; + let index: usize = 1; + &x[index..]; +} + +#[cfg(test)] +mod tests { + #[test] + fn test_fn() { + let x = [1, 2, 3, 4]; + let index: usize = 1; + &x[index..]; + } +} diff --git a/tests/ui-toml/indexing_slicing/indexing_slicing.stderr b/tests/ui-toml/indexing_slicing/indexing_slicing.stderr new file mode 100644 index 00000000000..5a4de8337b4 --- /dev/null +++ b/tests/ui-toml/indexing_slicing/indexing_slicing.stderr @@ -0,0 +1,12 @@ +error: slicing may panic + --> tests/ui-toml/indexing_slicing/indexing_slicing.rs:8:6 + | +LL | &x[index..]; + | ^^^^^^^^^^ + | + = help: consider using `.get(n..)` or .get_mut(n..)` instead + = note: `-D clippy::indexing-slicing` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::indexing_slicing)]` + +error: aborting due to 1 previous error + diff --git a/tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr b/tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr index 6fa583fc041..200129da25f 100644 --- a/tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr +++ b/tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr @@ -6,6 +6,7 @@ error: error reading Clippy's configuration file: unknown field `foobar`, expect allow-comparison-to-zero allow-dbg-in-tests allow-expect-in-tests + allow-indexing-slicing-in-tests allow-mixed-uninlined-format-args allow-one-hash-in-raw-strings allow-panic-in-tests @@ -93,6 +94,7 @@ error: error reading Clippy's configuration file: unknown field `barfoo`, expect allow-comparison-to-zero allow-dbg-in-tests allow-expect-in-tests + allow-indexing-slicing-in-tests allow-mixed-uninlined-format-args allow-one-hash-in-raw-strings allow-panic-in-tests @@ -180,6 +182,7 @@ error: error reading Clippy's configuration file: unknown field `allow_mixed_uni allow-comparison-to-zero allow-dbg-in-tests allow-expect-in-tests + allow-indexing-slicing-in-tests allow-mixed-uninlined-format-args allow-one-hash-in-raw-strings allow-panic-in-tests -- cgit 1.4.1-3-g733a5 From c772140a1fc8cbb6a87db332ce021db7f42857bf Mon Sep 17 00:00:00 2001 From: Scott McMurray Date: Sat, 14 Dec 2024 23:20:48 -0800 Subject: Update clippy --- clippy_utils/src/qualify_min_const_fn.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/clippy_utils/src/qualify_min_const_fn.rs b/clippy_utils/src/qualify_min_const_fn.rs index 104ae154e36..428b40c5771 100644 --- a/clippy_utils/src/qualify_min_const_fn.rs +++ b/clippy_utils/src/qualify_min_const_fn.rs @@ -109,7 +109,7 @@ fn check_rvalue<'tcx>( ) -> McfResult { match rvalue { Rvalue::ThreadLocalRef(_) => Err((span, "cannot access thread local storage in const fn".into())), - Rvalue::Len(place) | Rvalue::Discriminant(place) | Rvalue::Ref(_, _, place) | Rvalue::RawPtr(_, place) => { + Rvalue::Discriminant(place) | Rvalue::Ref(_, _, place) | Rvalue::RawPtr(_, place) => { check_place(tcx, *place, span, body, msrv) }, Rvalue::CopyForDeref(place) => check_place(tcx, *place, span, body, msrv), -- cgit 1.4.1-3-g733a5 From 4d735d831e1144319b19d06d930e6c0d31f3cf30 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Sat, 21 Dec 2024 17:05:40 +0000 Subject: Begin to implement type system layer of unsafe binders --- clippy_lints/src/dereference.rs | 3 ++- clippy_utils/src/visitors.rs | 4 +++- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/clippy_lints/src/dereference.rs b/clippy_lints/src/dereference.rs index e3959903fdd..821312a9e40 100644 --- a/clippy_lints/src/dereference.rs +++ b/clippy_lints/src/dereference.rs @@ -877,7 +877,8 @@ impl TyCoercionStability { | ty::CoroutineClosure(..) | ty::Never | ty::Tuple(_) - | ty::Alias(ty::Projection, _) => Self::Deref, + | ty::Alias(ty::Projection, _) + | ty::UnsafeBinder(_) => Self::Deref, }; } } diff --git a/clippy_utils/src/visitors.rs b/clippy_utils/src/visitors.rs index 71499b1293a..afceeec2272 100644 --- a/clippy_utils/src/visitors.rs +++ b/clippy_utils/src/visitors.rs @@ -677,6 +677,9 @@ pub fn for_each_unconsumed_temporary<'tcx, B>( ExprKind::Type(e, _) => { helper(typeck, consume, e, f)?; }, + ExprKind::UnsafeBinderCast(_, e, _) => { + helper(typeck, consume, e, f)?; + }, // Either drops temporaries, jumps out of the current expression, or has no sub expression. ExprKind::DropTemps(_) @@ -694,7 +697,6 @@ pub fn for_each_unconsumed_temporary<'tcx, B>( | ExprKind::Continue(_) | ExprKind::InlineAsm(_) | ExprKind::OffsetOf(..) - | ExprKind::UnsafeBinderCast(..) | ExprKind::Err(_) => (), } ControlFlow::Continue(()) -- cgit 1.4.1-3-g733a5 From 1f8ba334a56455ba19570d75cc3575773a12a469 Mon Sep 17 00:00:00 2001 From: Samuel Tardieu Date: Mon, 23 Dec 2024 00:06:00 +0100 Subject: Fix `has_iter_method` documentation --- clippy_utils/src/ty/mod.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/clippy_utils/src/ty/mod.rs b/clippy_utils/src/ty/mod.rs index 260d1b801e3..670c1661ddc 100644 --- a/clippy_utils/src/ty/mod.rs +++ b/clippy_utils/src/ty/mod.rs @@ -171,7 +171,7 @@ pub fn should_call_clone_as_function(cx: &LateContext<'_>, ty: Ty<'_>) -> bool { ) } -/// Returns true if ty has `iter` or `iter_mut` methods +/// If `ty` is known to have a `iter` or `iter_mut` method, returns a symbol representing the type. pub fn has_iter_method(cx: &LateContext<'_>, probably_ref_ty: Ty<'_>) -> Option { // FIXME: instead of this hard-coded list, we should check if `::iter` // exists and has the desired signature. Unfortunately FnCtxt is not exported -- cgit 1.4.1-3-g733a5 From 887aa269b6657d53d4d074b6b34ad417fef1e271 Mon Sep 17 00:00:00 2001 From: lapla-cogito Date: Tue, 24 Dec 2024 21:10:43 +0900 Subject: add more tests --- tests/ui/if_not_else.fixed | 42 ++++++++++++++++++++ tests/ui/if_not_else.rs | 42 ++++++++++++++++++++ tests/ui/if_not_else.stderr | 96 ++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 179 insertions(+), 1 deletion(-) diff --git a/tests/ui/if_not_else.fixed b/tests/ui/if_not_else.fixed index 6c646b0b963..11d1e13179c 100644 --- a/tests/ui/if_not_else.fixed +++ b/tests/ui/if_not_else.fixed @@ -28,4 +28,46 @@ fn main() { } else { println!("Bunny"); } + + if (foo() && bla()) { + println!("both true"); + } else { + #[cfg(not(debug_assertions))] + println!("not debug"); + #[cfg(debug_assertions)] + println!("debug"); + if foo() { + println!("foo"); + } else if bla() { + println!("bla"); + } else { + println!("both false"); + } + } +} + +fn with_comments() { + if foo() { + println!("foo"); /* foo */ + } else { + /* foo is false */ + println!("foo is false"); + } + + if bla() { + println!("bla"); // bla + } else { + // bla is false + println!("bla"); + } +} + +fn with_annotations() { + #[cfg(debug_assertions)] + if foo() { + println!("foo"); /* foo */ + } else { + /* foo is false */ + println!("foo is false"); + } } diff --git a/tests/ui/if_not_else.rs b/tests/ui/if_not_else.rs index fd30e3702a2..fcc67e163e8 100644 --- a/tests/ui/if_not_else.rs +++ b/tests/ui/if_not_else.rs @@ -28,4 +28,46 @@ fn main() { } else { println!("Bunny"); } + + if !(foo() && bla()) { + #[cfg(not(debug_assertions))] + println!("not debug"); + #[cfg(debug_assertions)] + println!("debug"); + if foo() { + println!("foo"); + } else if bla() { + println!("bla"); + } else { + println!("both false"); + } + } else { + println!("both true"); + } +} + +fn with_comments() { + if !foo() { + /* foo is false */ + println!("foo is false"); + } else { + println!("foo"); /* foo */ + } + + if !bla() { + // bla is false + println!("bla"); + } else { + println!("bla"); // bla + } +} + +fn with_annotations() { + #[cfg(debug_assertions)] + if !foo() { + /* foo is false */ + println!("foo is false"); + } else { + println!("foo"); /* foo */ + } } diff --git a/tests/ui/if_not_else.stderr b/tests/ui/if_not_else.stderr index 01d6767004d..b01cb5af11f 100644 --- a/tests/ui/if_not_else.stderr +++ b/tests/ui/if_not_else.stderr @@ -42,5 +42,99 @@ LL + println!("Bugs"); LL + } | -error: aborting due to 2 previous errors +error: unnecessary boolean `not` operation + --> tests/ui/if_not_else.rs:32:5 + | +LL | / if !(foo() && bla()) { +LL | | #[cfg(not(debug_assertions))] +LL | | println!("not debug"); +LL | | #[cfg(debug_assertions)] +... | +LL | | println!("both true"); +LL | | } + | |_____^ + | +help: try + | +LL ~ if (foo() && bla()) { +LL + println!("both true"); +LL + } else { +LL + #[cfg(not(debug_assertions))] +LL + println!("not debug"); +LL + #[cfg(debug_assertions)] +LL + println!("debug"); +LL + if foo() { +LL + println!("foo"); +LL + } else if bla() { +LL + println!("bla"); +LL + } else { +LL + println!("both false"); +LL + } +LL + } + | + +error: unnecessary boolean `not` operation + --> tests/ui/if_not_else.rs:50:5 + | +LL | / if !foo() { +LL | | /* foo is false */ +LL | | println!("foo is false"); +LL | | } else { +LL | | println!("foo"); /* foo */ +LL | | } + | |_____^ + | +help: try + | +LL ~ if foo() { +LL + println!("foo"); /* foo */ +LL + } else { +LL + /* foo is false */ +LL + println!("foo is false"); +LL + } + | + +error: unnecessary boolean `not` operation + --> tests/ui/if_not_else.rs:57:5 + | +LL | / if !bla() { +LL | | // bla is false +LL | | println!("bla"); +LL | | } else { +LL | | println!("bla"); // bla +LL | | } + | |_____^ + | +help: try + | +LL ~ if bla() { +LL + println!("bla"); // bla +LL + } else { +LL + // bla is false +LL + println!("bla"); +LL + } + | + +error: unnecessary boolean `not` operation + --> tests/ui/if_not_else.rs:67:5 + | +LL | / if !foo() { +LL | | /* foo is false */ +LL | | println!("foo is false"); +LL | | } else { +LL | | println!("foo"); /* foo */ +LL | | } + | |_____^ + | +help: try + | +LL ~ if foo() { +LL + println!("foo"); /* foo */ +LL + } else { +LL + /* foo is false */ +LL + println!("foo is false"); +LL + } + | + +error: aborting due to 6 previous errors -- cgit 1.4.1-3-g733a5 From b28bfbceeb16610b9c7d8658069252b571dea3a1 Mon Sep 17 00:00:00 2001 From: lapla-cogito Date: Wed, 25 Dec 2024 13:59:48 +0900 Subject: fix examples using Ty.kind() --- book/src/development/common_tools_writing_lints.md | 2 +- book/src/development/type_checking.md | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/book/src/development/common_tools_writing_lints.md b/book/src/development/common_tools_writing_lints.md index 77910917963..c354e8914f5 100644 --- a/book/src/development/common_tools_writing_lints.md +++ b/book/src/development/common_tools_writing_lints.md @@ -37,7 +37,7 @@ impl LateLintPass<'_> for MyStructLint { // Get type of `expr` let ty = cx.typeck_results().expr_ty(expr); // Match its kind to enter its type - match ty.kind { + match ty.kind() { ty::Adt(adt_def, _) if adt_def.is_struct() => println!("Our `expr` is a struct!"), _ => () } diff --git a/book/src/development/type_checking.md b/book/src/development/type_checking.md index e6da4322a17..578836ecc56 100644 --- a/book/src/development/type_checking.md +++ b/book/src/development/type_checking.md @@ -94,7 +94,7 @@ impl LateLintPass<'_> for MyStructLint { // Get type of `expr` let ty = cx.typeck_results().expr_ty(expr); // Match its kind to enter the type - match ty.kind { + match ty.kind() { ty::Adt(adt_def, _) if adt_def.is_struct() => println!("Our `expr` is a struct!"), _ => () } -- cgit 1.4.1-3-g733a5 From 416f7e84c0cb385378a4d5187655e05e7b673ee3 Mon Sep 17 00:00:00 2001 From: Philipp Krones Date: Thu, 26 Dec 2024 14:47:30 +0100 Subject: Bump nightly version -> 2024-12-26 --- clippy_utils/README.md | 2 +- rust-toolchain | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/clippy_utils/README.md b/clippy_utils/README.md index 395c4a23e76..73fefbcd570 100644 --- a/clippy_utils/README.md +++ b/clippy_utils/README.md @@ -8,7 +8,7 @@ This crate is only guaranteed to build with this `nightly` toolchain: ``` -nightly-2024-12-15 +nightly-2024-12-26 ``` diff --git a/rust-toolchain b/rust-toolchain index 874893691c0..1000d90f52a 100644 --- a/rust-toolchain +++ b/rust-toolchain @@ -1,6 +1,6 @@ [toolchain] # begin autogenerated nightly -channel = "nightly-2024-12-15" +channel = "nightly-2024-12-26" # end autogenerated nightly components = ["cargo", "llvm-tools", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"] profile = "minimal" -- cgit 1.4.1-3-g733a5