diff options
| -rw-r--r-- | clippy_lints/src/methods/mod.rs | 30 | ||||
| -rw-r--r-- | tests/ui/filter_map_next.stderr | 3 | ||||
| -rw-r--r-- | tests/ui/map_unwrap_or.stderr | 16 | ||||
| -rw-r--r-- | tests/ui/methods.stderr | 3 |
4 files changed, 22 insertions, 30 deletions
diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs index fc77cd52b8f..d3e26a09ad4 100644 --- a/clippy_lints/src/methods/mod.rs +++ b/clippy_lints/src/methods/mod.rs @@ -32,8 +32,7 @@ use crate::utils::{ is_copy, is_expn_of, is_type_diagnostic_item, iter_input_pats, last_path_segment, match_def_path, match_qpath, match_trait_method, match_type, match_var, method_calls, method_chain_args, paths, remove_blocks, return_ty, single_segment_path, snippet, snippet_with_applicability, snippet_with_macro_callsite, span_lint, - span_lint_and_help, span_lint_and_note, span_lint_and_sugg, span_lint_and_then, sugg, walk_ptrs_ty_depth, - SpanlessEq, + span_lint_and_help, span_lint_and_sugg, span_lint_and_then, sugg, walk_ptrs_ty_depth, SpanlessEq, }; declare_clippy_lint! { @@ -2753,16 +2752,15 @@ fn lint_map_unwrap_or_else<'tcx>( let multiline = map_snippet.lines().count() > 1 || unwrap_snippet.lines().count() > 1; let same_span = map_args[1].span.ctxt() == unwrap_args[1].span.ctxt(); if same_span && !multiline { - span_lint_and_note( + let var_snippet = snippet(cx, map_args[0].span, ".."); + span_lint_and_sugg( cx, MAP_UNWRAP_OR, expr.span, msg, - None, - &format!( - "replace `map({0}).unwrap_or_else({1})` with `map_or_else({1}, {0})`", - map_snippet, unwrap_snippet, - ), + "try this", + format!("{}.map_or_else({}, {})", var_snippet, unwrap_snippet, map_snippet), + Applicability::MachineApplicable, ); return true; } else if same_span && multiline { @@ -2852,14 +2850,16 @@ fn lint_filter_next<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>, fil `.find(..)` instead."; let filter_snippet = snippet(cx, filter_args[1].span, ".."); if filter_snippet.lines().count() <= 1 { + let iter_snippet = snippet(cx, filter_args[0].span, ".."); // add note if not multi-line - span_lint_and_note( + span_lint_and_sugg( cx, FILTER_NEXT, expr.span, msg, - None, - &format!("replace `filter({0}).next()` with `find({0})`", filter_snippet), + "try this", + format!("{}.find({})", iter_snippet, filter_snippet), + Applicability::MachineApplicable, ); } else { span_lint(cx, FILTER_NEXT, expr.span, msg); @@ -2908,13 +2908,15 @@ fn lint_filter_map_next<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>, `.find_map(..)` instead."; let filter_snippet = snippet(cx, filter_args[1].span, ".."); if filter_snippet.lines().count() <= 1 { - span_lint_and_note( + let iter_snippet = snippet(cx, filter_args[0].span, ".."); + span_lint_and_sugg( cx, FILTER_MAP_NEXT, expr.span, msg, - None, - &format!("replace `filter_map({0}).next()` with `find_map({0})`", filter_snippet), + "try this", + format!("{}.find_map({})", iter_snippet, filter_snippet), + Applicability::MachineApplicable, ); } else { span_lint(cx, FILTER_MAP_NEXT, expr.span, msg); diff --git a/tests/ui/filter_map_next.stderr b/tests/ui/filter_map_next.stderr index 01281ebaf6a..bcedf11e536 100644 --- a/tests/ui/filter_map_next.stderr +++ b/tests/ui/filter_map_next.stderr @@ -2,10 +2,9 @@ error: called `filter_map(..).next()` on an `Iterator`. This is more succinctly --> $DIR/filter_map_next.rs:6:32 | LL | let element: Option<i32> = a.iter().filter_map(|s| s.parse().ok()).next(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `a.iter().find_map(|s| s.parse().ok())` | = note: `-D clippy::filter-map-next` implied by `-D warnings` - = note: replace `filter_map(|s| s.parse().ok()).next()` with `find_map(|s| s.parse().ok())` error: called `filter_map(..).next()` on an `Iterator`. This is more succinctly expressed by calling `.find_map(..)` instead. --> $DIR/filter_map_next.rs:10:26 diff --git a/tests/ui/map_unwrap_or.stderr b/tests/ui/map_unwrap_or.stderr index 6fa2800e9bd..1975abb3e9f 100644 --- a/tests/ui/map_unwrap_or.stderr +++ b/tests/ui/map_unwrap_or.stderr @@ -109,9 +109,7 @@ LL | let _ = opt.map(|x| x + 1) | _____________^ LL | | // Should lint even though this call is on a separate line. LL | | .unwrap_or_else(|| 0); - | |_____________________________^ - | - = note: replace `map(|x| x + 1).unwrap_or_else(|| 0)` with `map_or_else(|| 0, |x| x + 1)` + | |_____________________________^ help: try this: `opt.map_or_else(|| 0, |x| x + 1)` error: called `map(<f>).unwrap_or_else(<g>)` on an `Option` value. This can be done more directly by calling `map_or_else(<g>, <f>)` instead --> $DIR/map_unwrap_or.rs:55:13 @@ -137,25 +135,19 @@ error: called `map(<f>).unwrap_or_else(<g>)` on a `Result` value. This can be do --> $DIR/map_unwrap_or.rs:88:13 | LL | let _ = res.map(|x| x + 1).unwrap_or_else(|e| 0); // should lint even though this call is on a separate line - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | - = note: replace `map(|x| x + 1).unwrap_or_else(|e| 0)` with `map_or_else(|e| 0, |x| x + 1)` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `res.map_or_else(|e| 0, |x| x + 1)` error: called `map(<f>).unwrap_or_else(<g>)` on a `Result` value. This can be done more directly by calling `.map_or_else(<g>, <f>)` instead --> $DIR/map_unwrap_or.rs:90:13 | LL | let _ = res.map(|x| x + 1).unwrap_or_else(|e| 0); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | - = note: replace `map(|x| x + 1).unwrap_or_else(|e| 0)` with `map_or_else(|e| 0, |x| x + 1)` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `res.map_or_else(|e| 0, |x| x + 1)` error: called `map(<f>).unwrap_or_else(<g>)` on a `Result` value. This can be done more directly by calling `.map_or_else(<g>, <f>)` instead --> $DIR/map_unwrap_or.rs:91:13 | LL | let _ = res.map(|x| x + 1).unwrap_or_else(|e| 0); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | - = note: replace `map(|x| x + 1).unwrap_or_else(|e| 0)` with `map_or_else(|e| 0, |x| x + 1)` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `res.map_or_else(|e| 0, |x| x + 1)` error: aborting due to 13 previous errors diff --git a/tests/ui/methods.stderr b/tests/ui/methods.stderr index 74d8533d4da..2df1941aaaa 100644 --- a/tests/ui/methods.stderr +++ b/tests/ui/methods.stderr @@ -12,10 +12,9 @@ error: called `filter(..).next()` on an `Iterator`. This is more succinctly expr --> $DIR/methods.rs:126:13 | LL | let _ = v.iter().filter(|&x| *x < 0).next(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `v.iter().find(|&x| *x < 0)` | = note: `-D clippy::filter-next` implied by `-D warnings` - = note: replace `filter(|&x| *x < 0).next()` with `find(|&x| *x < 0)` error: called `filter(..).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(..)` instead. --> $DIR/methods.rs:129:13 |