From 189f264926ff70b58c8907473de60766477e7dd6 Mon Sep 17 00:00:00 2001 From: Esteban Küber Date: Mon, 11 Aug 2025 01:46:34 +0000 Subject: Allow attr entries to declare list of alternatives for `List` and `NamedValueStr` Modify `AttributeTemplate` to support list of alternatives for list and name value attribute styles. Suggestions now provide more correct suggested code: ``` error[E0805]: malformed `used` attribute input --> $DIR/used_with_multi_args.rs:3:1 | LL | #[used(compiler, linker)] | ^^^^^^------------------^ | | | expected a single argument here | help: try changing it to one of the following valid forms of the attribute | LL - #[used(compiler, linker)] LL + #[used(compiler)] | LL - #[used(compiler, linker)] LL + #[used(linker)] | LL - #[used(compiler, linker)] LL + #[used] | ``` instead of the prior "masking" of the lack of this feature by suggesting pipe-separated lists: ``` error[E0805]: malformed `used` attribute input --> $DIR/used_with_multi_args.rs:3:1 | LL | #[used(compiler, linker)] | ^^^^^^------------------^ | | | expected a single argument here | help: try changing it to one of the following valid forms of the attribute | LL - #[used(compiler, linker)] LL + #[used(compiler|linker)] | LL - #[used(compiler, linker)] LL + #[used] | ``` --- compiler/rustc_parse/src/validate_attr.rs | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'compiler/rustc_parse/src') diff --git a/compiler/rustc_parse/src/validate_attr.rs b/compiler/rustc_parse/src/validate_attr.rs index a7f8d3b9139..3df9f426ed0 100644 --- a/compiler/rustc_parse/src/validate_attr.rs +++ b/compiler/rustc_parse/src/validate_attr.rs @@ -298,11 +298,15 @@ fn emit_malformed_attribute( suggestions.push(format!("#{inner}[{name}]")); } if let Some(descr) = template.list { - suggestions.push(format!("#{inner}[{name}({descr})]")); + for descr in descr { + suggestions.push(format!("#{inner}[{name}({descr})]")); + } } suggestions.extend(template.one_of.iter().map(|&word| format!("#{inner}[{name}({word})]"))); if let Some(descr) = template.name_value_str { - suggestions.push(format!("#{inner}[{name} = \"{descr}\"]")); + for descr in descr { + suggestions.push(format!("#{inner}[{name} = \"{descr}\"]")); + } } if should_warn(name) { psess.buffer_lint( -- cgit 1.4.1-3-g733a5 From 625143bac3e2917adb59314a408b17e8d2f9bd65 Mon Sep 17 00:00:00 2001 From: Esteban Küber Date: Mon, 11 Aug 2025 04:21:09 +0000 Subject: Add link to docs on malformed attributes --- compiler/rustc_feature/src/builtin_attrs.rs | 341 ++++++++++++++++----- compiler/rustc_lint/messages.ftl | 1 + compiler/rustc_lint/src/early/diagnostics.rs | 4 +- compiler/rustc_lint/src/lints.rs | 3 + compiler/rustc_lint_defs/src/lib.rs | 1 + compiler/rustc_parse/src/validate_attr.rs | 33 +- tests/ui/attributes/crate-name-macro-call.stderr | 2 + tests/ui/attributes/crate-type-delimited.stderr | 1 + tests/ui/attributes/crate-type-empty.stderr | 1 + tests/ui/attributes/crate-type-macro-call.stderr | 1 + tests/ui/attributes/malformed-attrs.stderr | 19 ++ ...-crate-name-request-malformed-crate-name.stderr | 2 + ...ile-names-request-malformed-crate-name-1.stderr | 2 + ...ile-names-request-malformed-crate-name-2.stderr | 2 + ...-file-names-request-malformed-crate-name.stderr | 2 + .../link-attr-validation-early.stderr | 2 + tests/ui/lint/lint-malformed.stderr | 1 + tests/ui/malformed/malformed-regressions.stderr | 3 + tests/ui/modules/path-invalid-form.stderr | 2 + tests/ui/modules/path-macro.stderr | 2 + tests/ui/recursion_limit/invalid_digit_type.stderr | 2 + tests/ui/recursion_limit/invalid_macro.stderr | 2 + tests/ui/recursion_limit/no-value.stderr | 2 + 23 files changed, 344 insertions(+), 87 deletions(-) (limited to 'compiler/rustc_parse/src') diff --git a/compiler/rustc_feature/src/builtin_attrs.rs b/compiler/rustc_feature/src/builtin_attrs.rs index 1ee0984c9f4..a16c99b4311 100644 --- a/compiler/rustc_feature/src/builtin_attrs.rs +++ b/compiler/rustc_feature/src/builtin_attrs.rs @@ -127,6 +127,8 @@ pub struct AttributeTemplate { /// If `Some`, the attribute is allowed to be a name/value pair where the /// value is a string, like `#[must_use = "reason"]`. pub name_value_str: Option<&'static [&'static str]>, + /// A link to the document for this attribute. + pub docs: Option<&'static str>, } impl AttributeTemplate { @@ -209,21 +211,33 @@ pub enum AttributeDuplicates { /// supports forms `#[attr]` and `#[attr(description)]`. #[macro_export] macro_rules! template { - (Word) => { $crate::template!(@ true, None, &[], None) }; - (List: $descr: expr) => { $crate::template!(@ false, Some($descr), &[], None) }; - (OneOf: $one_of: expr) => { $crate::template!(@ false, None, $one_of, None) }; - (NameValueStr: $descr: expr) => { $crate::template!(@ false, None, &[], Some(&[$descr])) }; - (OneOfNameValueStr: $descr: expr) => { $crate::template!(@ false, None, &[], Some($descr)) }; - (Word, List: $descr: expr) => { $crate::template!(@ true, Some($descr), &[], None) }; - (Word, NameValueStr: $descr: expr) => { $crate::template!(@ true, None, &[], Some(&[$descr])) }; + (Word) => { $crate::template!(@ true, None, &[], None, None) }; + (Word, $link: literal) => { $crate::template!(@ true, None, &[], None, Some($link)) }; + (List: $descr: expr) => { $crate::template!(@ false, Some($descr), &[], None, None) }; + (List: $descr: expr, $link: literal) => { $crate::template!(@ false, Some($descr), &[], None, Some($link)) }; + (OneOf: $one_of: expr) => { $crate::template!(@ false, None, $one_of, None, None) }; + (NameValueStr: $descr: expr) => { $crate::template!(@ false, None, &[], Some(&[$descr]), None) }; + (NameValueStr: $descr: expr, $link: literal) => { $crate::template!(@ false, None, &[], Some(&[$descr]), Some($link)) }; + (OneOfNameValueStr: $descr: expr) => { $crate::template!(@ false, None, &[], Some($descr), None) }; + (OneOfNameValueStr: $descr: expr, $link: literal) => { $crate::template!(@ false, None, &[], Some($descr), Some($link)) }; + (Word, List: $descr: expr) => { $crate::template!(@ true, Some($descr), &[], None, None) }; + (Word, List: $descr: expr, $link: literal) => { $crate::template!(@ true, Some($descr), &[], None, Some($link)) }; + (Word, NameValueStr: $descr: expr) => { $crate::template!(@ true, None, &[], Some(&[$descr]), None) }; + (Word, NameValueStr: $descr: expr, $link: literal) => { $crate::template!(@ true, None, &[], Some(&[$descr]), Some($link)) }; (List: $descr1: expr, NameValueStr: $descr2: expr) => { - $crate::template!(@ false, Some($descr1), &[], Some(&[$descr2])) + $crate::template!(@ false, Some($descr1), &[], Some(&[$descr2]), None) + }; + (List: $descr1: expr, NameValueStr: $descr2: expr, $link: literal) => { + $crate::template!(@ false, Some($descr1), &[], Some(&[$descr2]), Some($link)) }; (Word, List: $descr1: expr, NameValueStr: $descr2: expr) => { - $crate::template!(@ true, Some($descr1), &[], Some(&[$descr2])) + $crate::template!(@ true, Some($descr1), &[], Some(&[$descr2]), None) + }; + (Word, List: $descr1: expr, NameValueStr: $descr2: expr, $link: literal) => { + $crate::template!(@ true, Some($descr1), &[], Some(&[$descr2]), Some($link)) }; - (@ $word: expr, $list: expr, $one_of: expr, $name_value_str: expr) => { $crate::AttributeTemplate { - word: $word, list: $list, one_of: $one_of, name_value_str: $name_value_str + (@ $word: expr, $list: expr, $one_of: expr, $name_value_str: expr, $link: expr) => { $crate::AttributeTemplate { + word: $word, list: $list, one_of: $one_of, name_value_str: $name_value_str, docs: $link, } }; } @@ -396,18 +410,42 @@ pub static BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ // ========================================================================== // Conditional compilation: - ungated!(cfg, Normal, template!(List: &["predicate"]), DuplicatesOk, EncodeCrossCrate::Yes), - ungated!(cfg_attr, Normal, template!(List: &["predicate, attr1, attr2, ..."]), DuplicatesOk, EncodeCrossCrate::Yes), + ungated!( + cfg, Normal, + template!( + List: &["predicate"], + "https://doc.rust-lang.org/reference/conditional-compilation.html#the-cfg-attribute" + ), + DuplicatesOk, EncodeCrossCrate::Yes + ), + ungated!( + cfg_attr, Normal, + template!( + List: &["predicate, attr1, attr2, ..."], + "https://doc.rust-lang.org/reference/conditional-compilation.html#the-cfg_attr-attribute" + ), + DuplicatesOk, EncodeCrossCrate::Yes + ), // Testing: ungated!( - ignore, Normal, template!(Word, NameValueStr: "reason"), WarnFollowing, - EncodeCrossCrate::No, + ignore, Normal, + template!( + Word, + NameValueStr: "reason", + "https://doc.rust-lang.org/reference/attributes/testing.html#the-ignore-attribute" + ), + WarnFollowing, EncodeCrossCrate::No, ), ungated!( should_panic, Normal, - template!(Word, List: &[r#"expected = "reason""#], NameValueStr: "reason"), FutureWarnFollowing, - EncodeCrossCrate::No, + template!( + Word, + List: &[r#"expected = "reason""#], + NameValueStr: "reason", + "https://doc.rust-lang.org/reference/attributes/testing.html#the-should_panic-attribute" + ), + FutureWarnFollowing, EncodeCrossCrate::No, ), // FIXME(Centril): This can be used on stable but shouldn't. ungated!( @@ -416,46 +454,102 @@ pub static BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ ), // Macros: - ungated!(automatically_derived, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::Yes), ungated!( - macro_use, Normal, template!(Word, List: &["name1, name2, ..."]), WarnFollowingWordOnly, - EncodeCrossCrate::No, + automatically_derived, Normal, + template!( + Word, + "https://doc.rust-lang.org/reference/attributes/derive.html#the-automatically_derived-attribute" + ), + WarnFollowing, EncodeCrossCrate::Yes + ), + ungated!( + macro_use, Normal, + template!( + Word, + List: &["name1, name2, ..."], + "https://doc.rust-lang.org/reference/macros-by-example.html#the-macro_use-attribute" + ), + WarnFollowingWordOnly, EncodeCrossCrate::No, ), ungated!(macro_escape, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::No), // Deprecated synonym for `macro_use`. ungated!( - macro_export, Normal, template!(Word, List: &["local_inner_macros"]), + macro_export, Normal, + template!( + Word, + List: &["local_inner_macros"], + "https://doc.rust-lang.org/reference/macros-by-example.html#path-based-scope" + ), WarnFollowing, EncodeCrossCrate::Yes ), - ungated!(proc_macro, Normal, template!(Word), ErrorFollowing, EncodeCrossCrate::No), ungated!( - proc_macro_derive, Normal, template!(List: &["TraitName", "TraitName, attributes(name1, name2, ...)"]), + proc_macro, Normal, + template!( + Word, + "https://doc.rust-lang.org/reference/procedural-macros.html#function-like-procedural-macros"), + ErrorFollowing, EncodeCrossCrate::No + ), + ungated!( + proc_macro_derive, Normal, + template!( + List: &["TraitName", "TraitName, attributes(name1, name2, ...)"], + "https://doc.rust-lang.org/reference/procedural-macros.html#derive-macros" + ), ErrorFollowing, EncodeCrossCrate::No, ), - ungated!(proc_macro_attribute, Normal, template!(Word), ErrorFollowing, EncodeCrossCrate::No), + ungated!( + proc_macro_attribute, Normal, + template!(Word, "https://doc.rust-lang.org/reference/procedural-macros.html#attribute-macros"), + ErrorFollowing, EncodeCrossCrate::No + ), // Lints: ungated!( - warn, Normal, template!(List: &["lint1", "lint1, lint2, ...", r#"lint1, lint2, lint3, reason = "...""#]), + warn, Normal, + template!( + List: &["lint1", "lint1, lint2, ...", r#"lint1, lint2, lint3, reason = "...""#], + "https://doc.rust-lang.org/reference/attributes/diagnostics.html#lint-check-attributes" + ), DuplicatesOk, EncodeCrossCrate::No, ), ungated!( - allow, Normal, template!(List: &["lint1", "lint1, lint2, ...", r#"lint1, lint2, lint3, reason = "...""#]), + allow, Normal, + template!( + List: &["lint1", "lint1, lint2, ...", r#"lint1, lint2, lint3, reason = "...""#], + "https://doc.rust-lang.org/reference/attributes/diagnostics.html#lint-check-attributes" + ), DuplicatesOk, EncodeCrossCrate::No, ), ungated!( - expect, Normal, template!(List: &["lint1", "lint1, lint2, ...", r#"lint1, lint2, lint3, reason = "...""#]), + expect, Normal, + template!( + List: &["lint1", "lint1, lint2, ...", r#"lint1, lint2, lint3, reason = "...""#], + "https://doc.rust-lang.org/reference/attributes/diagnostics.html#lint-check-attributes" + ), DuplicatesOk, EncodeCrossCrate::No, ), ungated!( - forbid, Normal, template!(List: &["lint1", "lint1, lint2, ...", r#"lint1, lint2, lint3, reason = "...""#]), + forbid, Normal, + template!( + List: &["lint1", "lint1, lint2, ...", r#"lint1, lint2, lint3, reason = "...""#], + "https://doc.rust-lang.org/reference/attributes/diagnostics.html#lint-check-attributes" + ), DuplicatesOk, EncodeCrossCrate::No ), ungated!( - deny, Normal, template!(List: &["lint1", "lint1, lint2, ...", r#"lint1, lint2, lint3, reason = "...""#]), + deny, Normal, + template!( + List: &["lint1", "lint1, lint2, ...", r#"lint1, lint2, lint3, reason = "...""#], + "https://doc.rust-lang.org/reference/attributes/diagnostics.html#lint-check-attributes" + ), DuplicatesOk, EncodeCrossCrate::No ), ungated!( - must_use, Normal, template!(Word, NameValueStr: "reason"), + must_use, Normal, + template!( + Word, + NameValueStr: "reason", + "https://doc.rust-lang.org/reference/attributes/diagnostics.html#the-must_use-attribute" + ), FutureWarnFollowing, EncodeCrossCrate::Yes ), gated!( @@ -467,19 +561,28 @@ pub static BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ template!( Word, List: &[r#"/*opt*/ since = "version", /*opt*/ note = "reason""#], - NameValueStr: "reason" + NameValueStr: "reason", + "https://doc.rust-lang.org/reference/attributes/diagnostics.html#the-deprecated-attribute" ), ErrorFollowing, EncodeCrossCrate::Yes ), // Crate properties: ungated!( - crate_name, CrateLevel, template!(NameValueStr: "name"), FutureWarnFollowing, - EncodeCrossCrate::No, + crate_name, CrateLevel, + template!( + NameValueStr: "name", + "https://doc.rust-lang.org/reference/crates-and-source-files.html#the-crate_name-attribute" + ), + FutureWarnFollowing, EncodeCrossCrate::No, ), ungated!( - crate_type, CrateLevel, template!(OneOfNameValueStr: &["bin", "lib", "dylib", "cdylib", "rlib", "staticlib", "sdylib", "proc-macro"]), DuplicatesOk, - EncodeCrossCrate::No, + crate_type, CrateLevel, + template!( + OneOfNameValueStr: &["bin", "lib", "dylib", "cdylib", "rlib", "staticlib", "sdylib", "proc-macro"], + "https://doc.rust-lang.org/reference/linkage.html" + ), + DuplicatesOk, EncodeCrossCrate::No, ), // ABI, linking, symbols, and FFI @@ -491,33 +594,67 @@ pub static BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ r#"name = "...", wasm_import_module = "...""#, r#"name = "...", import_name_type = "decorated|noprefix|undecorated""#, r#"name = "...", kind = "dylib|static|...", wasm_import_module = "...", import_name_type = "decorated|noprefix|undecorated""#, - ]), - DuplicatesOk, - EncodeCrossCrate::No, + ], "https://doc.rust-lang.org/reference/items/external-blocks.html#the-link-attribute"), + DuplicatesOk, EncodeCrossCrate::No, ), ungated!( - link_name, Normal, template!(NameValueStr: "name"), + link_name, Normal, + template!(NameValueStr: "name", "https://doc.rust-lang.org/reference/items/external-blocks.html#the-link_name-attribute"), FutureWarnPreceding, EncodeCrossCrate::Yes ), - ungated!(no_link, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::No), - ungated!(repr, Normal, template!(List: &["C"]), DuplicatesOk, EncodeCrossCrate::No), + ungated!( + no_link, Normal, + template!(Word, "https://doc.rust-lang.org/reference/items/extern-crates.html#the-no_link-attribute"), + WarnFollowing, EncodeCrossCrate::No + ), + ungated!( + repr, Normal, + template!(List: &["C"], "https://doc.rust-lang.org/reference/type-layout.html#representations"), + DuplicatesOk, EncodeCrossCrate::No + ), // FIXME(#82232, #143834): temporarily renamed to mitigate `#[align]` nameres ambiguity gated!(rustc_align, Normal, template!(List: &["alignment"]), DuplicatesOk, EncodeCrossCrate::No, fn_align, experimental!(rustc_align)), - ungated!(unsafe(Edition2024) export_name, Normal, template!(NameValueStr: "name"), FutureWarnPreceding, EncodeCrossCrate::No), - ungated!(unsafe(Edition2024) link_section, Normal, template!(NameValueStr: "name"), FutureWarnPreceding, EncodeCrossCrate::No), - ungated!(unsafe(Edition2024) no_mangle, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::No), - ungated!(used, Normal, template!(Word, List: &["compiler", "linker"]), WarnFollowing, EncodeCrossCrate::No), - ungated!(link_ordinal, Normal, template!(List: &["ordinal"]), ErrorPreceding, EncodeCrossCrate::Yes), - ungated!(unsafe naked, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::No), + ungated!( + unsafe(Edition2024) export_name, Normal, + template!(NameValueStr: "name", "https://doc.rust-lang.org/reference/abi.html#the-export_name-attribute"), + FutureWarnPreceding, EncodeCrossCrate::No + ), + ungated!( + unsafe(Edition2024) link_section, Normal, + template!(NameValueStr: "name", "https://doc.rust-lang.org/reference/abi.html#the-link_section-attribute"), + FutureWarnPreceding, EncodeCrossCrate::No + ), + ungated!( + unsafe(Edition2024) no_mangle, Normal, + template!(Word, "https://doc.rust-lang.org/reference/abi.html#the-no_mangle-attribute"), + WarnFollowing, EncodeCrossCrate::No + ), + ungated!( + used, Normal, + template!(Word, List: &["compiler", "linker"], "https://doc.rust-lang.org/reference/abi.html#the-used-attribute"), + WarnFollowing, EncodeCrossCrate::No + ), + ungated!( + link_ordinal, Normal, + template!(List: &["ordinal"], "https://doc.rust-lang.org/reference/items/external-blocks.html#the-link_ordinal-attribute"), + ErrorPreceding, EncodeCrossCrate::Yes + ), + ungated!( + unsafe naked, Normal, + template!(Word, "https://doc.rust-lang.org/reference/attributes/codegen.html#the-naked-attribute"), + WarnFollowing, EncodeCrossCrate::No + ), // Limits: ungated!( - recursion_limit, CrateLevel, template!(NameValueStr: "N"), FutureWarnFollowing, - EncodeCrossCrate::No + recursion_limit, CrateLevel, + template!(NameValueStr: "N", "https://doc.rust-lang.org/reference/attributes/limits.html#the-recursion_limit-attribute"), + FutureWarnFollowing, EncodeCrossCrate::No ), ungated!( - type_length_limit, CrateLevel, template!(NameValueStr: "N"), FutureWarnFollowing, - EncodeCrossCrate::No + type_length_limit, CrateLevel, + template!(NameValueStr: "N", "https://doc.rust-lang.org/reference/attributes/limits.html#the-type_length_limit-attribute"), + FutureWarnFollowing, EncodeCrossCrate::No ), gated!( move_size_limit, CrateLevel, template!(NameValueStr: "N"), ErrorFollowing, @@ -525,32 +662,81 @@ pub static BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ ), // Entry point: - ungated!(no_main, CrateLevel, template!(Word), WarnFollowing, EncodeCrossCrate::No), + ungated!( + no_main, CrateLevel, + template!(Word, "https://doc.rust-lang.org/reference/crates-and-source-files.html#the-no_main-attribute"), + WarnFollowing, EncodeCrossCrate::No + ), // Modules, prelude, and resolution: - ungated!(path, Normal, template!(NameValueStr: "file"), FutureWarnFollowing, EncodeCrossCrate::No), - ungated!(no_std, CrateLevel, template!(Word), WarnFollowing, EncodeCrossCrate::No), - ungated!(no_implicit_prelude, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::No), - ungated!(non_exhaustive, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::Yes), + ungated!( + path, Normal, + template!(NameValueStr: "file", "https://doc.rust-lang.org/reference/items/modules.html#the-path-attribute"), + FutureWarnFollowing, EncodeCrossCrate::No + ), + ungated!( + no_std, CrateLevel, + template!(Word, "https://doc.rust-lang.org/reference/names/preludes.html#the-no_std-attribute"), + WarnFollowing, EncodeCrossCrate::No + ), + ungated!( + no_implicit_prelude, Normal, + template!(Word, "https://doc.rust-lang.org/reference/names/preludes.html#the-no_implicit_prelude-attribute"), + WarnFollowing, EncodeCrossCrate::No + ), + ungated!( + non_exhaustive, Normal, + template!(Word, "https://doc.rust-lang.org/reference/attributes/type_system.html#the-non_exhaustive-attribute"), + WarnFollowing, EncodeCrossCrate::Yes + ), // Runtime ungated!( windows_subsystem, CrateLevel, - template!(OneOfNameValueStr: &["windows", "console"]), FutureWarnFollowing, - EncodeCrossCrate::No + template!(OneOfNameValueStr: &["windows", "console"], "https://doc.rust-lang.org/reference/runtime.html#the-windows_subsystem-attribute"), + FutureWarnFollowing, EncodeCrossCrate::No + ), + ungated!( // RFC 2070 + panic_handler, Normal, + template!(Word, "https://doc.rust-lang.org/reference/panic.html#the-panic_handler-attribute"), + WarnFollowing, EncodeCrossCrate::Yes ), - ungated!(panic_handler, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::Yes), // RFC 2070 // Code generation: - ungated!(inline, Normal, template!(Word, List: &["always", "never"]), FutureWarnFollowing, EncodeCrossCrate::No), - ungated!(cold, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::No), - ungated!(no_builtins, CrateLevel, template!(Word), WarnFollowing, EncodeCrossCrate::Yes), ungated!( - target_feature, Normal, template!(List: &[r#"enable = "name""#]), + inline, Normal, + template!( + Word, + List: &["always", "never"], + "https://doc.rust-lang.org/reference/attributes/codegen.html#the-inline-attribute" + ), + FutureWarnFollowing, EncodeCrossCrate::No + ), + ungated!( + cold, Normal, + template!(Word, "https://doc.rust-lang.org/reference/attributes/codegen.html#the-cold-attribute"), + WarnFollowing, EncodeCrossCrate::No + ), + ungated!( + no_builtins, CrateLevel, + template!(Word, "https://doc.rust-lang.org/reference/attributes/codegen.html#the-no_builtins-attribute"), + WarnFollowing, EncodeCrossCrate::Yes + ), + ungated!( + target_feature, Normal, + template!(List: &[r#"enable = "name""#], "https://doc.rust-lang.org/reference/attributes/codegen.html#the-target_feature-attribute"), DuplicatesOk, EncodeCrossCrate::No, ), - ungated!(track_caller, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::Yes), - ungated!(instruction_set, Normal, template!(List: &["set"]), ErrorPreceding, EncodeCrossCrate::No), + ungated!( + track_caller, Normal, + template!(Word, "https://doc.rust-lang.org/reference/attributes/codegen.html#the-track_caller-attribute"), + WarnFollowing, EncodeCrossCrate::Yes + ), + ungated!( + instruction_set, Normal, + template!(List: &["set"], "https://doc.rust-lang.org/reference/attributes/codegen.html#the-instruction_set-attribute"), + ErrorPreceding, EncodeCrossCrate::No + ), gated!( no_sanitize, Normal, template!(List: &["address, kcfi, memory, thread"]), DuplicatesOk, @@ -563,18 +749,31 @@ pub static BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ ), ungated!( - doc, Normal, template!(List: &["hidden", "inline"], NameValueStr: "string"), DuplicatesOk, - EncodeCrossCrate::Yes + doc, Normal, + template!( + List: &["hidden", "inline"], + NameValueStr: "string", + "https://doc.rust-lang.org/rustdoc/write-documentation/the-doc-attribute.html" + ), + DuplicatesOk, EncodeCrossCrate::Yes ), // Debugging ungated!( debugger_visualizer, Normal, - template!(List: &[r#"natvis_file = "...", gdb_script_file = "...""#]), + template!( + List: &[r#"natvis_file = "...", gdb_script_file = "...""#], + "https://doc.rust-lang.org/reference/attributes/debugger.html#the-debugger_visualizer-attribute" + ), DuplicatesOk, EncodeCrossCrate::No ), - ungated!(collapse_debuginfo, Normal, template!(List: &["no", "external", "yes"]), ErrorFollowing, - EncodeCrossCrate::Yes + ungated!( + collapse_debuginfo, Normal, + template!( + List: &["no", "external", "yes"], + "https://doc.rust-lang.org/reference/attributes/debugger.html#the-collapse_debuginfo-attribute" + ), + ErrorFollowing, EncodeCrossCrate::Yes ), // ========================================================================== @@ -835,7 +1034,7 @@ pub static BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ "linkonce_odr", "weak", "weak_odr", - ]), + ], "https://doc.rust-lang.org/reference/linkage.html"), ErrorPreceding, EncodeCrossCrate::No, "the `linkage` attribute is experimental and not portable across platforms", ), diff --git a/compiler/rustc_lint/messages.ftl b/compiler/rustc_lint/messages.ftl index 4d0c0c94a81..776d8d35e05 100644 --- a/compiler/rustc_lint/messages.ftl +++ b/compiler/rustc_lint/messages.ftl @@ -349,6 +349,7 @@ lint_ill_formed_attribute_input = {$num_suggestions -> [1] attribute must be of the form {$suggestions} *[other] valid forms for the attribute are {$suggestions} } + .note = for more information, visit <{$docs}> lint_impl_trait_overcaptures = `{$self_ty}` will capture more lifetimes than possibly intended in edition 2024 .note = specifically, {$num_captured -> diff --git a/compiler/rustc_lint/src/early/diagnostics.rs b/compiler/rustc_lint/src/early/diagnostics.rs index f0fbf5bc81e..1e4bc79ce70 100644 --- a/compiler/rustc_lint/src/early/diagnostics.rs +++ b/compiler/rustc_lint/src/early/diagnostics.rs @@ -447,12 +447,14 @@ pub fn decorate_builtin_lint( BuiltinLintDiag::UnusedCrateDependency { extern_crate, local_crate } => { lints::UnusedCrateDependency { extern_crate, local_crate }.decorate_lint(diag) } - BuiltinLintDiag::IllFormedAttributeInput { suggestions } => { + BuiltinLintDiag::IllFormedAttributeInput { suggestions, docs } => { lints::IllFormedAttributeInput { num_suggestions: suggestions.len(), suggestions: DiagArgValue::StrListSepByAnd( suggestions.into_iter().map(|s| format!("`{s}`").into()).collect(), ), + has_docs: docs.is_some(), + docs: docs.unwrap_or(""), } .decorate_lint(diag) } diff --git a/compiler/rustc_lint/src/lints.rs b/compiler/rustc_lint/src/lints.rs index 73e69a1791a..ba0112c8ac6 100644 --- a/compiler/rustc_lint/src/lints.rs +++ b/compiler/rustc_lint/src/lints.rs @@ -2685,6 +2685,9 @@ pub(crate) struct UnusedCrateDependency { pub(crate) struct IllFormedAttributeInput { pub num_suggestions: usize, pub suggestions: DiagArgValue, + #[note] + pub has_docs: bool, + pub docs: &'static str, } #[derive(LintDiagnostic)] diff --git a/compiler/rustc_lint_defs/src/lib.rs b/compiler/rustc_lint_defs/src/lib.rs index fe068d96b74..dc5ea3922f1 100644 --- a/compiler/rustc_lint_defs/src/lib.rs +++ b/compiler/rustc_lint_defs/src/lib.rs @@ -793,6 +793,7 @@ pub enum BuiltinLintDiag { }, IllFormedAttributeInput { suggestions: Vec, + docs: Option<&'static str>, }, InnerAttributeUnstable { is_macro: bool, diff --git a/compiler/rustc_parse/src/validate_attr.rs b/compiler/rustc_parse/src/validate_attr.rs index 3df9f426ed0..68ef6d6f32c 100644 --- a/compiler/rustc_parse/src/validate_attr.rs +++ b/compiler/rustc_parse/src/validate_attr.rs @@ -313,24 +313,27 @@ fn emit_malformed_attribute( ILL_FORMED_ATTRIBUTE_INPUT, span, ast::CRATE_NODE_ID, - BuiltinLintDiag::IllFormedAttributeInput { suggestions: suggestions.clone() }, + BuiltinLintDiag::IllFormedAttributeInput { + suggestions: suggestions.clone(), + docs: template.docs, + }, ); } else { suggestions.sort(); - psess - .dcx() - .struct_span_err(span, error_msg) - .with_span_suggestions( - span, - if suggestions.len() == 1 { - "must be of the form" - } else { - "the following are the possible correct uses" - }, - suggestions, - Applicability::HasPlaceholders, - ) - .emit(); + let mut err = psess.dcx().struct_span_err(span, error_msg).with_span_suggestions( + span, + if suggestions.len() == 1 { + "must be of the form" + } else { + "the following are the possible correct uses" + }, + suggestions, + Applicability::HasPlaceholders, + ); + if let Some(link) = template.docs { + err.note(format!("for more information, visit <{link}>")); + } + err.emit(); } } diff --git a/tests/ui/attributes/crate-name-macro-call.stderr b/tests/ui/attributes/crate-name-macro-call.stderr index ab562b41a31..56827aa11a4 100644 --- a/tests/ui/attributes/crate-name-macro-call.stderr +++ b/tests/ui/attributes/crate-name-macro-call.stderr @@ -3,6 +3,8 @@ error: malformed `crate_name` attribute input | LL | #![crate_name = concat!("my", "crate")] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: must be of the form: `#![crate_name = "name"]` + | + = note: for more information, visit error: aborting due to 1 previous error diff --git a/tests/ui/attributes/crate-type-delimited.stderr b/tests/ui/attributes/crate-type-delimited.stderr index 8a377df8c73..7f080f74838 100644 --- a/tests/ui/attributes/crate-type-delimited.stderr +++ b/tests/ui/attributes/crate-type-delimited.stderr @@ -4,6 +4,7 @@ error: malformed `crate_type` attribute input LL | #![crate_type(lib)] | ^^^^^^^^^^^^^^^^^^^ | + = note: for more information, visit help: the following are the possible correct uses | LL - #![crate_type(lib)] diff --git a/tests/ui/attributes/crate-type-empty.stderr b/tests/ui/attributes/crate-type-empty.stderr index b80d2797c36..f50bb33d6bb 100644 --- a/tests/ui/attributes/crate-type-empty.stderr +++ b/tests/ui/attributes/crate-type-empty.stderr @@ -4,6 +4,7 @@ error: malformed `crate_type` attribute input LL | #![crate_type] | ^^^^^^^^^^^^^^ | + = note: for more information, visit help: the following are the possible correct uses | LL | #![crate_type = "bin"] diff --git a/tests/ui/attributes/crate-type-macro-call.stderr b/tests/ui/attributes/crate-type-macro-call.stderr index 77daba5c4d1..97938f7af24 100644 --- a/tests/ui/attributes/crate-type-macro-call.stderr +++ b/tests/ui/attributes/crate-type-macro-call.stderr @@ -4,6 +4,7 @@ error: malformed `crate_type` attribute input LL | #![crate_type = foo!()] | ^^^^^^^^^^^^^^^^^^^^^^^ | + = note: for more information, visit help: the following are the possible correct uses | LL - #![crate_type = foo!()] diff --git a/tests/ui/attributes/malformed-attrs.stderr b/tests/ui/attributes/malformed-attrs.stderr index 5f5ebbd281a..ac84cf0df17 100644 --- a/tests/ui/attributes/malformed-attrs.stderr +++ b/tests/ui/attributes/malformed-attrs.stderr @@ -31,6 +31,7 @@ error: malformed `windows_subsystem` attribute input LL | #![windows_subsystem] | ^^^^^^^^^^^^^^^^^^^^^ | + = note: for more information, visit help: the following are the possible correct uses | LL | #![windows_subsystem = "console"] @@ -43,6 +44,8 @@ error: malformed `crate_name` attribute input | LL | #[crate_name] | ^^^^^^^^^^^^^ help: must be of the form: `#[crate_name = "name"]` + | + = note: for more information, visit error: malformed `no_sanitize` attribute input --> $DIR/malformed-attrs.rs:89:1 @@ -55,6 +58,8 @@ error: malformed `instruction_set` attribute input | LL | #[instruction_set] | ^^^^^^^^^^^^^^^^^^ help: must be of the form: `#[instruction_set(set)]` + | + = note: for more information, visit error: malformed `patchable_function_entry` attribute input --> $DIR/malformed-attrs.rs:105:1 @@ -89,6 +94,7 @@ error: malformed `linkage` attribute input LL | #[linkage] | ^^^^^^^^^^ | + = note: for more information, visit help: the following are the possible correct uses | LL | #[linkage = "available_externally"] @@ -107,6 +113,7 @@ error: malformed `allow` attribute input LL | #[allow] | ^^^^^^^^ | + = note: for more information, visit help: the following are the possible correct uses | LL | #[allow(lint1)] @@ -122,6 +129,7 @@ error: malformed `expect` attribute input LL | #[expect] | ^^^^^^^^^ | + = note: for more information, visit help: the following are the possible correct uses | LL | #[expect(lint1)] @@ -137,6 +145,7 @@ error: malformed `warn` attribute input LL | #[warn] | ^^^^^^^ | + = note: for more information, visit help: the following are the possible correct uses | LL | #[warn(lint1)] @@ -152,6 +161,7 @@ error: malformed `deny` attribute input LL | #[deny] | ^^^^^^^ | + = note: for more information, visit help: the following are the possible correct uses | LL | #[deny(lint1)] @@ -167,6 +177,7 @@ error: malformed `forbid` attribute input LL | #[forbid] | ^^^^^^^^^ | + = note: for more information, visit help: the following are the possible correct uses | LL | #[forbid(lint1)] @@ -181,6 +192,8 @@ error: malformed `debugger_visualizer` attribute input | LL | #[debugger_visualizer] | ^^^^^^^^^^^^^^^^^^^^^^ help: must be of the form: `#[debugger_visualizer(natvis_file = "...", gdb_script_file = "...")]` + | + = note: for more information, visit error: malformed `thread_local` attribute input --> $DIR/malformed-attrs.rs:200:1 @@ -193,6 +206,8 @@ error: malformed `no_link` attribute input | LL | #[no_link()] | ^^^^^^^^^^^^ help: must be of the form: `#[no_link]` + | + = note: for more information, visit error: malformed `macro_export` attribute input --> $DIR/malformed-attrs.rs:211:1 @@ -200,6 +215,7 @@ error: malformed `macro_export` attribute input LL | #[macro_export = 18] | ^^^^^^^^^^^^^^^^^^^^ | + = note: for more information, visit help: the following are the possible correct uses | LL - #[macro_export = 18] @@ -250,6 +266,7 @@ LL | #[doc] | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #57571 + = note: for more information, visit = note: `#[deny(ill_formed_attribute_input)]` on by default error: valid forms for the attribute are `#[doc(hidden)]`, `#[doc(inline)]`, and `#[doc = "string"]` @@ -260,6 +277,7 @@ LL | #[doc] | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #57571 + = note: for more information, visit error: valid forms for the attribute are `#[link(name = "...")]`, `#[link(name = "...", kind = "dylib|static|...")]`, `#[link(name = "...", wasm_import_module = "...")]`, `#[link(name = "...", import_name_type = "decorated|noprefix|undecorated")]`, and `#[link(name = "...", kind = "dylib|static|...", wasm_import_module = "...", import_name_type = "decorated|noprefix|undecorated")]` --> $DIR/malformed-attrs.rs:80:1 @@ -269,6 +287,7 @@ LL | #[link] | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #57571 + = note: for more information, visit error: invalid argument --> $DIR/malformed-attrs.rs:185:1 diff --git a/tests/ui/invalid-compile-flags/print-crate-name-request-malformed-crate-name.stderr b/tests/ui/invalid-compile-flags/print-crate-name-request-malformed-crate-name.stderr index 6bf09a2b131..b773f7c97aa 100644 --- a/tests/ui/invalid-compile-flags/print-crate-name-request-malformed-crate-name.stderr +++ b/tests/ui/invalid-compile-flags/print-crate-name-request-malformed-crate-name.stderr @@ -3,6 +3,8 @@ error: malformed `crate_name` attribute input | LL | #![crate_name = concat!("wrapped")] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: must be of the form: `#![crate_name = "name"]` + | + = note: for more information, visit error: aborting due to 1 previous error diff --git a/tests/ui/invalid-compile-flags/print-file-names-request-malformed-crate-name-1.stderr b/tests/ui/invalid-compile-flags/print-file-names-request-malformed-crate-name-1.stderr index de62aed79fc..64e38ed8533 100644 --- a/tests/ui/invalid-compile-flags/print-file-names-request-malformed-crate-name-1.stderr +++ b/tests/ui/invalid-compile-flags/print-file-names-request-malformed-crate-name-1.stderr @@ -3,6 +3,8 @@ error: malformed `crate_name` attribute input | LL | #![crate_name] | ^^^^^^^^^^^^^^ help: must be of the form: `#![crate_name = "name"]` + | + = note: for more information, visit error: aborting due to 1 previous error diff --git a/tests/ui/invalid-compile-flags/print-file-names-request-malformed-crate-name-2.stderr b/tests/ui/invalid-compile-flags/print-file-names-request-malformed-crate-name-2.stderr index 42c33de1221..e9a5b58e4f9 100644 --- a/tests/ui/invalid-compile-flags/print-file-names-request-malformed-crate-name-2.stderr +++ b/tests/ui/invalid-compile-flags/print-file-names-request-malformed-crate-name-2.stderr @@ -3,6 +3,8 @@ error: malformed `crate_name` attribute input | LL | #![crate_name = concat!("this_one_is_not")] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: must be of the form: `#![crate_name = "name"]` + | + = note: for more information, visit error: aborting due to 1 previous error diff --git a/tests/ui/invalid-compile-flags/print-file-names-request-malformed-crate-name.stderr b/tests/ui/invalid-compile-flags/print-file-names-request-malformed-crate-name.stderr index cb5ffaab9ca..e63525c6a5d 100644 --- a/tests/ui/invalid-compile-flags/print-file-names-request-malformed-crate-name.stderr +++ b/tests/ui/invalid-compile-flags/print-file-names-request-malformed-crate-name.stderr @@ -3,6 +3,8 @@ error: malformed `crate_name` attribute input | LL | #![crate_name = concat!("wrapped")] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: must be of the form: `#![crate_name = "name"]` + | + = note: for more information, visit error: aborting due to 1 previous error diff --git a/tests/ui/link-native-libs/link-attr-validation-early.stderr b/tests/ui/link-native-libs/link-attr-validation-early.stderr index ab8698f4429..c6afbdff14f 100644 --- a/tests/ui/link-native-libs/link-attr-validation-early.stderr +++ b/tests/ui/link-native-libs/link-attr-validation-early.stderr @@ -6,6 +6,7 @@ LL | #[link] | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #57571 + = note: for more information, visit = note: `#[deny(ill_formed_attribute_input)]` on by default error: valid forms for the attribute are `#[link(name = "...")]`, `#[link(name = "...", kind = "dylib|static|...")]`, `#[link(name = "...", wasm_import_module = "...")]`, `#[link(name = "...", import_name_type = "decorated|noprefix|undecorated")]`, and `#[link(name = "...", kind = "dylib|static|...", wasm_import_module = "...", import_name_type = "decorated|noprefix|undecorated")]` @@ -16,6 +17,7 @@ LL | #[link = "foo"] | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #57571 + = note: for more information, visit error: aborting due to 2 previous errors diff --git a/tests/ui/lint/lint-malformed.stderr b/tests/ui/lint/lint-malformed.stderr index b8d96c6c689..25a4298bd75 100644 --- a/tests/ui/lint/lint-malformed.stderr +++ b/tests/ui/lint/lint-malformed.stderr @@ -18,6 +18,7 @@ error: malformed `deny` attribute input LL | #![deny = "foo"] | ^^^^^^^^^^^^^^^^ | + = note: for more information, visit help: the following are the possible correct uses | LL - #![deny = "foo"] diff --git a/tests/ui/malformed/malformed-regressions.stderr b/tests/ui/malformed/malformed-regressions.stderr index b6c28efeea9..656bb0b2924 100644 --- a/tests/ui/malformed/malformed-regressions.stderr +++ b/tests/ui/malformed/malformed-regressions.stderr @@ -6,6 +6,7 @@ LL | #[doc] | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #57571 + = note: for more information, visit = note: `#[deny(ill_formed_attribute_input)]` on by default error: valid forms for the attribute are `#[link(name = "...")]`, `#[link(name = "...", kind = "dylib|static|...")]`, `#[link(name = "...", wasm_import_module = "...")]`, `#[link(name = "...", import_name_type = "decorated|noprefix|undecorated")]`, and `#[link(name = "...", kind = "dylib|static|...", wasm_import_module = "...", import_name_type = "decorated|noprefix|undecorated")]` @@ -16,6 +17,7 @@ LL | #[link] | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #57571 + = note: for more information, visit error: valid forms for the attribute are `#[link(name = "...")]`, `#[link(name = "...", kind = "dylib|static|...")]`, `#[link(name = "...", wasm_import_module = "...")]`, `#[link(name = "...", import_name_type = "decorated|noprefix|undecorated")]`, and `#[link(name = "...", kind = "dylib|static|...", wasm_import_module = "...", import_name_type = "decorated|noprefix|undecorated")]` --> $DIR/malformed-regressions.rs:9:1 @@ -25,6 +27,7 @@ LL | #[link = ""] | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #57571 + = note: for more information, visit error: valid forms for the attribute are `#[ignore = "reason"]` and `#[ignore]` --> $DIR/malformed-regressions.rs:3:1 diff --git a/tests/ui/modules/path-invalid-form.stderr b/tests/ui/modules/path-invalid-form.stderr index e8ded1343f7..4e9a62fa7a9 100644 --- a/tests/ui/modules/path-invalid-form.stderr +++ b/tests/ui/modules/path-invalid-form.stderr @@ -3,6 +3,8 @@ error: malformed `path` attribute input | LL | #[path = 123] | ^^^^^^^^^^^^^ help: must be of the form: `#[path = "file"]` + | + = note: for more information, visit error: aborting due to 1 previous error diff --git a/tests/ui/modules/path-macro.stderr b/tests/ui/modules/path-macro.stderr index eb02c721edd..fd93871f3a6 100644 --- a/tests/ui/modules/path-macro.stderr +++ b/tests/ui/modules/path-macro.stderr @@ -3,6 +3,8 @@ error: malformed `path` attribute input | LL | #[path = foo!()] | ^^^^^^^^^^^^^^^^ help: must be of the form: `#[path = "file"]` + | + = note: for more information, visit error: aborting due to 1 previous error diff --git a/tests/ui/recursion_limit/invalid_digit_type.stderr b/tests/ui/recursion_limit/invalid_digit_type.stderr index 94442b5747f..a122262f1df 100644 --- a/tests/ui/recursion_limit/invalid_digit_type.stderr +++ b/tests/ui/recursion_limit/invalid_digit_type.stderr @@ -3,6 +3,8 @@ error: malformed `recursion_limit` attribute input | LL | #![recursion_limit = 123] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: must be of the form: `#![recursion_limit = "N"]` + | + = note: for more information, visit error: aborting due to 1 previous error diff --git a/tests/ui/recursion_limit/invalid_macro.stderr b/tests/ui/recursion_limit/invalid_macro.stderr index aa4894ec4d8..b4dbc9fcb13 100644 --- a/tests/ui/recursion_limit/invalid_macro.stderr +++ b/tests/ui/recursion_limit/invalid_macro.stderr @@ -3,6 +3,8 @@ error: malformed `recursion_limit` attribute input | LL | #![recursion_limit = foo!()] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: must be of the form: `#![recursion_limit = "N"]` + | + = note: for more information, visit error: aborting due to 1 previous error diff --git a/tests/ui/recursion_limit/no-value.stderr b/tests/ui/recursion_limit/no-value.stderr index b2e8c46c372..4a0ad04f271 100644 --- a/tests/ui/recursion_limit/no-value.stderr +++ b/tests/ui/recursion_limit/no-value.stderr @@ -3,6 +3,8 @@ error: malformed `recursion_limit` attribute input | LL | #![recursion_limit] | ^^^^^^^^^^^^^^^^^^^ help: must be of the form: `#![recursion_limit = "N"]` + | + = note: for more information, visit error: aborting due to 1 previous error -- cgit 1.4.1-3-g733a5 From fa733909edadf390cde8c36c303bce42d37f7a3b Mon Sep 17 00:00:00 2001 From: Cameron Steffen Date: Wed, 30 Jul 2025 16:33:59 -0500 Subject: Move trait impl modifier errors to parsing This is a technically a breaking change for what can be parsed in `#[cfg(false)]`. --- compiler/rustc_ast_passes/messages.ftl | 5 --- compiler/rustc_ast_passes/src/ast_validation.rs | 39 +++----------------- compiler/rustc_ast_passes/src/errors.rs | 14 -------- compiler/rustc_parse/messages.ftl | 5 +++ compiler/rustc_parse/src/errors.rs | 14 ++++++++ compiler/rustc_parse/src/parser/item.rs | 36 ++++++++++++++++++- tests/ui/parser/default-on-wrong-item-kind.rs | 8 ++--- tests/ui/parser/default-on-wrong-item-kind.stderr | 42 +++++++++++++++++++++- ...const-trait-bound-theoretical-regression.stderr | 22 ++++++------ tests/ui/traits/syntax-trait-polarity.stderr | 16 ++++----- 10 files changed, 123 insertions(+), 78 deletions(-) (limited to 'compiler/rustc_parse/src') diff --git a/compiler/rustc_ast_passes/messages.ftl b/compiler/rustc_ast_passes/messages.ftl index 53e64439afc..340a1a239c5 100644 --- a/compiler/rustc_ast_passes/messages.ftl +++ b/compiler/rustc_ast_passes/messages.ftl @@ -175,11 +175,6 @@ ast_passes_generic_default_trailing = generic parameters with a default must be ast_passes_incompatible_features = `{$f1}` and `{$f2}` are incompatible, using them at the same time is not allowed .help = remove one of these features -ast_passes_inherent_cannot_be = inherent impls cannot be {$annotation} - .because = {$annotation} because of this - .type = inherent impl for this type - .only_trait = only trait implementations may be annotated with {$annotation} - ast_passes_item_invalid_safety = items outside of `unsafe extern {"{ }"}` cannot be declared with `safe` safety qualifier .suggestion = remove safe from this item diff --git a/compiler/rustc_ast_passes/src/ast_validation.rs b/compiler/rustc_ast_passes/src/ast_validation.rs index 355721b66f9..1fffb617c50 100644 --- a/compiler/rustc_ast_passes/src/ast_validation.rs +++ b/compiler/rustc_ast_passes/src/ast_validation.rs @@ -26,7 +26,7 @@ use rustc_ast::visit::{AssocCtxt, BoundKind, FnCtxt, FnKind, Visitor, walk_list} use rustc_ast::*; use rustc_ast_pretty::pprust::{self, State}; use rustc_data_structures::fx::FxIndexMap; -use rustc_errors::{DiagCtxtHandle, E0197}; +use rustc_errors::DiagCtxtHandle; use rustc_feature::Features; use rustc_parse::validate_attr; use rustc_session::Session; @@ -993,49 +993,20 @@ impl<'a> Visitor<'a> for AstValidator<'a> { }); } ItemKind::Impl(box Impl { - safety, - polarity, - defaultness, - constness, + safety: _, + polarity: _, + defaultness: _, + constness: _, generics, of_trait: None, self_ty, items, }) => { - let error = |annotation_span, annotation, only_trait| errors::InherentImplCannot { - span: self_ty.span, - annotation_span, - annotation, - self_ty: self_ty.span, - only_trait, - }; - self.visit_attrs_vis(&item.attrs, &item.vis); self.visibility_not_permitted( &item.vis, errors::VisibilityNotPermittedNote::IndividualImplItems, ); - if let &Safety::Unsafe(span) = safety { - self.dcx() - .create_err(errors::InherentImplCannot { - span: self_ty.span, - annotation_span: span, - annotation: "unsafe", - self_ty: self_ty.span, - only_trait: true, - }) - .with_code(E0197) - .emit(); - } - if let &ImplPolarity::Negative(span) = polarity { - self.dcx().emit_err(error(span, "negative", false)); - } - if let &Defaultness::Default(def_span) = defaultness { - self.dcx().emit_err(error(def_span, "`default`", true)); - } - if let &Const::Yes(span) = constness { - self.dcx().emit_err(error(span, "`const`", true)); - } self.with_tilde_const(Some(TildeConstReason::Impl { span: item.span }), |this| { this.visit_generics(generics) diff --git a/compiler/rustc_ast_passes/src/errors.rs b/compiler/rustc_ast_passes/src/errors.rs index 4448945cd6d..1cb2493afe8 100644 --- a/compiler/rustc_ast_passes/src/errors.rs +++ b/compiler/rustc_ast_passes/src/errors.rs @@ -464,20 +464,6 @@ pub(crate) struct UnsafeNegativeImpl { pub r#unsafe: Span, } -#[derive(Diagnostic)] -#[diag(ast_passes_inherent_cannot_be)] -pub(crate) struct InherentImplCannot<'a> { - #[primary_span] - pub span: Span, - #[label(ast_passes_because)] - pub annotation_span: Span, - pub annotation: &'a str, - #[label(ast_passes_type)] - pub self_ty: Span, - #[note(ast_passes_only_trait)] - pub only_trait: bool, -} - #[derive(Diagnostic)] #[diag(ast_passes_unsafe_item)] pub(crate) struct UnsafeItem { diff --git a/compiler/rustc_parse/messages.ftl b/compiler/rustc_parse/messages.ftl index aaf1b6c05bf..7970d8d552f 100644 --- a/compiler/rustc_parse/messages.ftl +++ b/compiler/rustc_parse/messages.ftl @@ -869,6 +869,11 @@ parse_trait_alias_cannot_be_auto = trait aliases cannot be `auto` parse_trait_alias_cannot_be_const = trait aliases cannot be `const` parse_trait_alias_cannot_be_unsafe = trait aliases cannot be `unsafe` +parse_trait_impl_modifier_in_inherent_impl = inherent impls cannot be {$annotation} + .because = {$annotation} because of this + .type = inherent impl for this type + .only_trait = only trait implementations may be annotated with {$annotation} + parse_transpose_dyn_or_impl = `for<...>` expected after `{$kw}`, not before .suggestion = move `{$kw}` before the `for<...>` diff --git a/compiler/rustc_parse/src/errors.rs b/compiler/rustc_parse/src/errors.rs index ddb2c545c78..2a704ee61ec 100644 --- a/compiler/rustc_parse/src/errors.rs +++ b/compiler/rustc_parse/src/errors.rs @@ -71,6 +71,20 @@ pub(crate) struct BadQPathStage2 { pub wrap: WrapType, } +#[derive(Diagnostic)] +#[diag(parse_trait_impl_modifier_in_inherent_impl)] +pub(crate) struct TraitImplModifierInInherentImpl<'a> { + #[primary_span] + pub span: Span, + #[label(parse_because)] + pub annotation_span: Span, + pub annotation: &'a str, + #[label(parse_type)] + pub self_ty: Span, + #[note(parse_only_trait)] + pub only_trait: bool, +} + #[derive(Subdiagnostic)] #[multipart_suggestion(parse_suggestion, applicability = "machine-applicable")] pub(crate) struct WrapType { diff --git a/compiler/rustc_parse/src/parser/item.rs b/compiler/rustc_parse/src/parser/item.rs index 14a90e74049..96d7120e21e 100644 --- a/compiler/rustc_parse/src/parser/item.rs +++ b/compiler/rustc_parse/src/parser/item.rs @@ -665,7 +665,41 @@ impl<'a> Parser<'a> { (Some(trait_ref), ty_second) } - None => (None, ty_first), // impl Type + None => { + let self_ty = ty_first; + let error = |annotation_span, annotation, only_trait| { + errors::TraitImplModifierInInherentImpl { + span: self_ty.span, + annotation_span, + annotation, + self_ty: self_ty.span, + only_trait, + } + }; + + if let Safety::Unsafe(span) = safety { + self.dcx() + .create_err(errors::TraitImplModifierInInherentImpl { + span: self_ty.span, + annotation_span: span, + annotation: "unsafe", + self_ty: self_ty.span, + only_trait: true, + }) + .with_code(E0197) + .emit(); + } + if let ImplPolarity::Negative(span) = polarity { + self.dcx().emit_err(error(span, "negative", false)); + } + if let Defaultness::Default(def_span) = defaultness { + self.dcx().emit_err(error(def_span, "`default`", true)); + } + if let Const::Yes(span) = constness { + self.dcx().emit_err(error(span, "`const`", true)); + } + (None, self_ty) + } }; Ok(ItemKind::Impl(Box::new(Impl { safety, diff --git a/tests/ui/parser/default-on-wrong-item-kind.rs b/tests/ui/parser/default-on-wrong-item-kind.rs index da990a4b421..db4e41a28ac 100644 --- a/tests/ui/parser/default-on-wrong-item-kind.rs +++ b/tests/ui/parser/default-on-wrong-item-kind.rs @@ -19,7 +19,7 @@ mod free_items { default union foo {} //~ ERROR a union cannot be `default` default trait foo {} //~ ERROR a trait cannot be `default` default trait foo = Ord; //~ ERROR a trait alias cannot be `default` - default impl foo {} + default impl foo {} //~ ERROR inherent impls cannot be `default` default!(); default::foo::bar!(); default default!(); //~ ERROR an item macro invocation cannot be `default` @@ -53,7 +53,7 @@ extern "C" { //~^ ERROR trait is not supported in `extern` blocks default trait foo = Ord; //~ ERROR a trait alias cannot be `default` //~^ ERROR trait alias is not supported in `extern` blocks - default impl foo {} + default impl foo {} //~ ERROR inherent impls cannot be `default` //~^ ERROR implementation is not supported in `extern` blocks default!(); default::foo::bar!(); @@ -90,7 +90,7 @@ impl S { //~^ ERROR trait is not supported in `trait`s or `impl`s default trait foo = Ord; //~ ERROR a trait alias cannot be `default` //~^ ERROR trait alias is not supported in `trait`s or `impl`s - default impl foo {} + default impl foo {} //~ ERROR inherent impls cannot be `default` //~^ ERROR implementation is not supported in `trait`s or `impl`s default!(); default::foo::bar!(); @@ -127,7 +127,7 @@ trait T { //~^ ERROR trait is not supported in `trait`s or `impl`s default trait foo = Ord; //~ ERROR a trait alias cannot be `default` //~^ ERROR trait alias is not supported in `trait`s or `impl`s - default impl foo {} + default impl foo {} //~ ERROR inherent impls cannot be `default` //~^ ERROR implementation is not supported in `trait`s or `impl`s default!(); default::foo::bar!(); diff --git a/tests/ui/parser/default-on-wrong-item-kind.stderr b/tests/ui/parser/default-on-wrong-item-kind.stderr index 56641565b16..fb15af832ca 100644 --- a/tests/ui/parser/default-on-wrong-item-kind.stderr +++ b/tests/ui/parser/default-on-wrong-item-kind.stderr @@ -78,6 +78,16 @@ LL | default trait foo = Ord; | = note: only associated `fn`, `const`, and `type` items can be `default` +error: inherent impls cannot be `default` + --> $DIR/default-on-wrong-item-kind.rs:22:18 + | +LL | default impl foo {} + | ------- ^^^ inherent impl for this type + | | + | `default` because of this + | + = note: only trait implementations may be annotated with `default` + error: an item macro invocation cannot be `default` --> $DIR/default-on-wrong-item-kind.rs:25:5 | @@ -275,6 +285,16 @@ LL | default trait foo = Ord; | = help: consider moving the trait alias out to a nearby module scope +error: inherent impls cannot be `default` + --> $DIR/default-on-wrong-item-kind.rs:56:18 + | +LL | default impl foo {} + | ------- ^^^ inherent impl for this type + | | + | `default` because of this + | + = note: only trait implementations may be annotated with `default` + error: implementation is not supported in `extern` blocks --> $DIR/default-on-wrong-item-kind.rs:56:5 | @@ -489,6 +509,16 @@ LL | default trait foo = Ord; | = help: consider moving the trait alias out to a nearby module scope +error: inherent impls cannot be `default` + --> $DIR/default-on-wrong-item-kind.rs:93:18 + | +LL | default impl foo {} + | ------- ^^^ inherent impl for this type + | | + | `default` because of this + | + = note: only trait implementations may be annotated with `default` + error: implementation is not supported in `trait`s or `impl`s --> $DIR/default-on-wrong-item-kind.rs:93:5 | @@ -703,6 +733,16 @@ LL | default trait foo = Ord; | = help: consider moving the trait alias out to a nearby module scope +error: inherent impls cannot be `default` + --> $DIR/default-on-wrong-item-kind.rs:130:18 + | +LL | default impl foo {} + | ------- ^^^ inherent impl for this type + | | + | `default` because of this + | + = note: only trait implementations may be annotated with `default` + error: implementation is not supported in `trait`s or `impl`s --> $DIR/default-on-wrong-item-kind.rs:130:5 | @@ -759,5 +799,5 @@ LL | default macro_rules! foo {} | = help: consider moving the macro definition out to a nearby module scope -error: aborting due to 95 previous errors +error: aborting due to 99 previous errors diff --git a/tests/ui/traits/const-traits/macro-const-trait-bound-theoretical-regression.stderr b/tests/ui/traits/const-traits/macro-const-trait-bound-theoretical-regression.stderr index af160a45f3e..58d38a62c67 100644 --- a/tests/ui/traits/const-traits/macro-const-trait-bound-theoretical-regression.stderr +++ b/tests/ui/traits/const-traits/macro-const-trait-bound-theoretical-regression.stderr @@ -1,14 +1,3 @@ -error: macro expansion ignores keyword `dyn` and any tokens following - --> $DIR/macro-const-trait-bound-theoretical-regression.rs:14:31 - | -LL | (dyn $c:ident Trait) => { dyn $c Trait {} }; - | ^^^ -... -LL | demo! { dyn const Trait } - | ------------------------- caused by the macro expansion here - | - = note: the usage of `demo!` is likely invalid in item context - error: inherent impls cannot be `const` --> $DIR/macro-const-trait-bound-theoretical-regression.rs:10:40 | @@ -24,6 +13,17 @@ LL | demo! { impl const Trait } = note: only trait implementations may be annotated with `const` = note: this error originates in the macro `demo` (in Nightly builds, run with -Z macro-backtrace for more info) +error: macro expansion ignores keyword `dyn` and any tokens following + --> $DIR/macro-const-trait-bound-theoretical-regression.rs:14:31 + | +LL | (dyn $c:ident Trait) => { dyn $c Trait {} }; + | ^^^ +... +LL | demo! { dyn const Trait } + | ------------------------- caused by the macro expansion here + | + = note: the usage of `demo!` is likely invalid in item context + error[E0658]: const trait impls are experimental --> $DIR/macro-const-trait-bound-theoretical-regression.rs:17:14 | diff --git a/tests/ui/traits/syntax-trait-polarity.stderr b/tests/ui/traits/syntax-trait-polarity.stderr index 1fd40fb6657..a623cdbef3a 100644 --- a/tests/ui/traits/syntax-trait-polarity.stderr +++ b/tests/ui/traits/syntax-trait-polarity.stderr @@ -6,6 +6,14 @@ LL | impl !TestType {} | | | negative because of this +error: inherent impls cannot be negative + --> $DIR/syntax-trait-polarity.rs:18:10 + | +LL | impl !TestType2 {} + | -^^^^^^^^^^^^ inherent impl for this type + | | + | negative because of this + error[E0198]: negative impls cannot be unsafe --> $DIR/syntax-trait-polarity.rs:12:13 | @@ -15,14 +23,6 @@ LL | unsafe impl !Send for TestType {} | | negative because of this | unsafe because of this -error: inherent impls cannot be negative - --> $DIR/syntax-trait-polarity.rs:18:10 - | -LL | impl !TestType2 {} - | -^^^^^^^^^^^^ inherent impl for this type - | | - | negative because of this - error[E0198]: negative impls cannot be unsafe --> $DIR/syntax-trait-polarity.rs:21:16 | -- cgit 1.4.1-3-g733a5 From 3aa0ac0a8af32f2c5da106c5e89bd9712d5a9655 Mon Sep 17 00:00:00 2001 From: Cameron Steffen Date: Wed, 30 Jul 2025 18:00:53 -0500 Subject: Tweak trait modifier errors --- compiler/rustc_parse/messages.ftl | 6 ++--- compiler/rustc_parse/src/errors.rs | 10 ++++---- compiler/rustc_parse/src/parser/item.rs | 29 ++++++++-------------- tests/ui/error-codes/E0197.stderr | 2 +- tests/ui/parser/default-on-wrong-item-kind.rs | 8 +++--- tests/ui/parser/default-on-wrong-item-kind.stderr | 16 ++++++------ tests/ui/specialization/defaultimpl/validation.rs | 2 +- .../specialization/defaultimpl/validation.stderr | 4 +-- tests/ui/traits/const-traits/inherent-impl.rs | 4 +-- tests/ui/traits/const-traits/inherent-impl.stderr | 8 +++--- ...const-trait-bound-theoretical-regression.stderr | 4 +-- .../traits/const-traits/span-bug-issue-121418.rs | 2 +- .../const-traits/span-bug-issue-121418.stderr | 4 +-- tests/ui/traits/safety-inherent-impl.stderr | 2 +- tests/ui/traits/syntax-trait-polarity.stderr | 4 +++ 15 files changed, 50 insertions(+), 55 deletions(-) (limited to 'compiler/rustc_parse/src') diff --git a/compiler/rustc_parse/messages.ftl b/compiler/rustc_parse/messages.ftl index 7970d8d552f..3a21eea3d0a 100644 --- a/compiler/rustc_parse/messages.ftl +++ b/compiler/rustc_parse/messages.ftl @@ -869,10 +869,10 @@ parse_trait_alias_cannot_be_auto = trait aliases cannot be `auto` parse_trait_alias_cannot_be_const = trait aliases cannot be `const` parse_trait_alias_cannot_be_unsafe = trait aliases cannot be `unsafe` -parse_trait_impl_modifier_in_inherent_impl = inherent impls cannot be {$annotation} - .because = {$annotation} because of this +parse_trait_impl_modifier_in_inherent_impl = inherent impls cannot be {$modifier_name} + .because = {$modifier_name} because of this .type = inherent impl for this type - .only_trait = only trait implementations may be annotated with {$annotation} + .note = only trait implementations may be annotated with `{$modifier}` parse_transpose_dyn_or_impl = `for<...>` expected after `{$kw}`, not before .suggestion = move `{$kw}` before the `for<...>` diff --git a/compiler/rustc_parse/src/errors.rs b/compiler/rustc_parse/src/errors.rs index 2a704ee61ec..a07d0606fd0 100644 --- a/compiler/rustc_parse/src/errors.rs +++ b/compiler/rustc_parse/src/errors.rs @@ -73,16 +73,16 @@ pub(crate) struct BadQPathStage2 { #[derive(Diagnostic)] #[diag(parse_trait_impl_modifier_in_inherent_impl)] -pub(crate) struct TraitImplModifierInInherentImpl<'a> { +#[note] +pub(crate) struct TraitImplModifierInInherentImpl { #[primary_span] pub span: Span, + pub modifier: &'static str, + pub modifier_name: &'static str, #[label(parse_because)] - pub annotation_span: Span, - pub annotation: &'a str, + pub modifier_span: Span, #[label(parse_type)] pub self_ty: Span, - #[note(parse_only_trait)] - pub only_trait: bool, } #[derive(Subdiagnostic)] diff --git a/compiler/rustc_parse/src/parser/item.rs b/compiler/rustc_parse/src/parser/item.rs index 96d7120e21e..75cb103d5d6 100644 --- a/compiler/rustc_parse/src/parser/item.rs +++ b/compiler/rustc_parse/src/parser/item.rs @@ -667,36 +667,27 @@ impl<'a> Parser<'a> { } None => { let self_ty = ty_first; - let error = |annotation_span, annotation, only_trait| { - errors::TraitImplModifierInInherentImpl { + let error = |modifier, modifier_name, modifier_span| { + self.dcx().create_err(errors::TraitImplModifierInInherentImpl { span: self_ty.span, - annotation_span, - annotation, + modifier, + modifier_name, + modifier_span, self_ty: self_ty.span, - only_trait, - } + }) }; if let Safety::Unsafe(span) = safety { - self.dcx() - .create_err(errors::TraitImplModifierInInherentImpl { - span: self_ty.span, - annotation_span: span, - annotation: "unsafe", - self_ty: self_ty.span, - only_trait: true, - }) - .with_code(E0197) - .emit(); + error("unsafe", "unsafe", span).with_code(E0197).emit(); } if let ImplPolarity::Negative(span) = polarity { - self.dcx().emit_err(error(span, "negative", false)); + error("!", "negative", span).emit(); } if let Defaultness::Default(def_span) = defaultness { - self.dcx().emit_err(error(def_span, "`default`", true)); + error("default", "default", def_span).emit(); } if let Const::Yes(span) = constness { - self.dcx().emit_err(error(span, "`const`", true)); + error("const", "const", span).emit(); } (None, self_ty) } diff --git a/tests/ui/error-codes/E0197.stderr b/tests/ui/error-codes/E0197.stderr index e3d3c7dde9c..04c6174b9f1 100644 --- a/tests/ui/error-codes/E0197.stderr +++ b/tests/ui/error-codes/E0197.stderr @@ -6,7 +6,7 @@ LL | unsafe impl Foo { } | | | unsafe because of this | - = note: only trait implementations may be annotated with unsafe + = note: only trait implementations may be annotated with `unsafe` error: aborting due to 1 previous error diff --git a/tests/ui/parser/default-on-wrong-item-kind.rs b/tests/ui/parser/default-on-wrong-item-kind.rs index db4e41a28ac..9de85640565 100644 --- a/tests/ui/parser/default-on-wrong-item-kind.rs +++ b/tests/ui/parser/default-on-wrong-item-kind.rs @@ -19,7 +19,7 @@ mod free_items { default union foo {} //~ ERROR a union cannot be `default` default trait foo {} //~ ERROR a trait cannot be `default` default trait foo = Ord; //~ ERROR a trait alias cannot be `default` - default impl foo {} //~ ERROR inherent impls cannot be `default` + default impl foo {} //~ ERROR inherent impls cannot be default default!(); default::foo::bar!(); default default!(); //~ ERROR an item macro invocation cannot be `default` @@ -53,7 +53,7 @@ extern "C" { //~^ ERROR trait is not supported in `extern` blocks default trait foo = Ord; //~ ERROR a trait alias cannot be `default` //~^ ERROR trait alias is not supported in `extern` blocks - default impl foo {} //~ ERROR inherent impls cannot be `default` + default impl foo {} //~ ERROR inherent impls cannot be default //~^ ERROR implementation is not supported in `extern` blocks default!(); default::foo::bar!(); @@ -90,7 +90,7 @@ impl S { //~^ ERROR trait is not supported in `trait`s or `impl`s default trait foo = Ord; //~ ERROR a trait alias cannot be `default` //~^ ERROR trait alias is not supported in `trait`s or `impl`s - default impl foo {} //~ ERROR inherent impls cannot be `default` + default impl foo {} //~ ERROR inherent impls cannot be default //~^ ERROR implementation is not supported in `trait`s or `impl`s default!(); default::foo::bar!(); @@ -127,7 +127,7 @@ trait T { //~^ ERROR trait is not supported in `trait`s or `impl`s default trait foo = Ord; //~ ERROR a trait alias cannot be `default` //~^ ERROR trait alias is not supported in `trait`s or `impl`s - default impl foo {} //~ ERROR inherent impls cannot be `default` + default impl foo {} //~ ERROR inherent impls cannot be default //~^ ERROR implementation is not supported in `trait`s or `impl`s default!(); default::foo::bar!(); diff --git a/tests/ui/parser/default-on-wrong-item-kind.stderr b/tests/ui/parser/default-on-wrong-item-kind.stderr index fb15af832ca..0380fcdf775 100644 --- a/tests/ui/parser/default-on-wrong-item-kind.stderr +++ b/tests/ui/parser/default-on-wrong-item-kind.stderr @@ -78,13 +78,13 @@ LL | default trait foo = Ord; | = note: only associated `fn`, `const`, and `type` items can be `default` -error: inherent impls cannot be `default` +error: inherent impls cannot be default --> $DIR/default-on-wrong-item-kind.rs:22:18 | LL | default impl foo {} | ------- ^^^ inherent impl for this type | | - | `default` because of this + | default because of this | = note: only trait implementations may be annotated with `default` @@ -285,13 +285,13 @@ LL | default trait foo = Ord; | = help: consider moving the trait alias out to a nearby module scope -error: inherent impls cannot be `default` +error: inherent impls cannot be default --> $DIR/default-on-wrong-item-kind.rs:56:18 | LL | default impl foo {} | ------- ^^^ inherent impl for this type | | - | `default` because of this + | default because of this | = note: only trait implementations may be annotated with `default` @@ -509,13 +509,13 @@ LL | default trait foo = Ord; | = help: consider moving the trait alias out to a nearby module scope -error: inherent impls cannot be `default` +error: inherent impls cannot be default --> $DIR/default-on-wrong-item-kind.rs:93:18 | LL | default impl foo {} | ------- ^^^ inherent impl for this type | | - | `default` because of this + | default because of this | = note: only trait implementations may be annotated with `default` @@ -733,13 +733,13 @@ LL | default trait foo = Ord; | = help: consider moving the trait alias out to a nearby module scope -error: inherent impls cannot be `default` +error: inherent impls cannot be default --> $DIR/default-on-wrong-item-kind.rs:130:18 | LL | default impl foo {} | ------- ^^^ inherent impl for this type | | - | `default` because of this + | default because of this | = note: only trait implementations may be annotated with `default` diff --git a/tests/ui/specialization/defaultimpl/validation.rs b/tests/ui/specialization/defaultimpl/validation.rs index 14771be8982..78f6099c3dd 100644 --- a/tests/ui/specialization/defaultimpl/validation.rs +++ b/tests/ui/specialization/defaultimpl/validation.rs @@ -4,7 +4,7 @@ struct S; struct Z; -default impl S {} //~ ERROR inherent impls cannot be `default` +default impl S {} //~ ERROR inherent impls cannot be default default unsafe impl Send for S {} //~^ ERROR impls of auto traits cannot be default diff --git a/tests/ui/specialization/defaultimpl/validation.stderr b/tests/ui/specialization/defaultimpl/validation.stderr index 82a33bf9cdc..a8dfef2dcfb 100644 --- a/tests/ui/specialization/defaultimpl/validation.stderr +++ b/tests/ui/specialization/defaultimpl/validation.stderr @@ -1,10 +1,10 @@ -error: inherent impls cannot be `default` +error: inherent impls cannot be default --> $DIR/validation.rs:7:14 | LL | default impl S {} | ------- ^ inherent impl for this type | | - | `default` because of this + | default because of this | = note: only trait implementations may be annotated with `default` diff --git a/tests/ui/traits/const-traits/inherent-impl.rs b/tests/ui/traits/const-traits/inherent-impl.rs index 07b23adf9e1..5ca4c5d7863 100644 --- a/tests/ui/traits/const-traits/inherent-impl.rs +++ b/tests/ui/traits/const-traits/inherent-impl.rs @@ -5,9 +5,9 @@ struct S; trait T {} impl const S {} -//~^ ERROR inherent impls cannot be `const` +//~^ ERROR inherent impls cannot be const impl const dyn T {} -//~^ ERROR inherent impls cannot be `const` +//~^ ERROR inherent impls cannot be const fn main() {} diff --git a/tests/ui/traits/const-traits/inherent-impl.stderr b/tests/ui/traits/const-traits/inherent-impl.stderr index e4ec1e807b0..d828ecb6349 100644 --- a/tests/ui/traits/const-traits/inherent-impl.stderr +++ b/tests/ui/traits/const-traits/inherent-impl.stderr @@ -1,20 +1,20 @@ -error: inherent impls cannot be `const` +error: inherent impls cannot be const --> $DIR/inherent-impl.rs:7:12 | LL | impl const S {} | ----- ^ inherent impl for this type | | - | `const` because of this + | const because of this | = note: only trait implementations may be annotated with `const` -error: inherent impls cannot be `const` +error: inherent impls cannot be const --> $DIR/inherent-impl.rs:10:12 | LL | impl const dyn T {} | ----- ^^^^^ inherent impl for this type | | - | `const` because of this + | const because of this | = note: only trait implementations may be annotated with `const` diff --git a/tests/ui/traits/const-traits/macro-const-trait-bound-theoretical-regression.stderr b/tests/ui/traits/const-traits/macro-const-trait-bound-theoretical-regression.stderr index 58d38a62c67..9fad260f0be 100644 --- a/tests/ui/traits/const-traits/macro-const-trait-bound-theoretical-regression.stderr +++ b/tests/ui/traits/const-traits/macro-const-trait-bound-theoretical-regression.stderr @@ -1,4 +1,4 @@ -error: inherent impls cannot be `const` +error: inherent impls cannot be const --> $DIR/macro-const-trait-bound-theoretical-regression.rs:10:40 | LL | (impl $c:ident Trait) => { impl $c Trait {} }; @@ -7,7 +7,7 @@ LL | (impl $c:ident Trait) => { impl $c Trait {} }; LL | demo! { impl const Trait } | -------------------------- | | | - | | `const` because of this + | | const because of this | in this macro invocation | = note: only trait implementations may be annotated with `const` diff --git a/tests/ui/traits/const-traits/span-bug-issue-121418.rs b/tests/ui/traits/const-traits/span-bug-issue-121418.rs index 50a7e12f2a7..593180ac094 100644 --- a/tests/ui/traits/const-traits/span-bug-issue-121418.rs +++ b/tests/ui/traits/const-traits/span-bug-issue-121418.rs @@ -4,7 +4,7 @@ struct S; trait T {} impl const dyn T { - //~^ ERROR inherent impls cannot be `const` + //~^ ERROR inherent impls cannot be const pub const fn new() -> std::sync::Mutex {} //~^ ERROR mismatched types //~| ERROR cannot be known at compilation time diff --git a/tests/ui/traits/const-traits/span-bug-issue-121418.stderr b/tests/ui/traits/const-traits/span-bug-issue-121418.stderr index f31129d9cb7..0c8ca918a3e 100644 --- a/tests/ui/traits/const-traits/span-bug-issue-121418.stderr +++ b/tests/ui/traits/const-traits/span-bug-issue-121418.stderr @@ -1,10 +1,10 @@ -error: inherent impls cannot be `const` +error: inherent impls cannot be const --> $DIR/span-bug-issue-121418.rs:6:12 | LL | impl const dyn T { | ----- ^^^^^ inherent impl for this type | | - | `const` because of this + | const because of this | = note: only trait implementations may be annotated with `const` diff --git a/tests/ui/traits/safety-inherent-impl.stderr b/tests/ui/traits/safety-inherent-impl.stderr index f4443857dc9..45cdbe2b523 100644 --- a/tests/ui/traits/safety-inherent-impl.stderr +++ b/tests/ui/traits/safety-inherent-impl.stderr @@ -6,7 +6,7 @@ LL | unsafe impl SomeStruct { | | | unsafe because of this | - = note: only trait implementations may be annotated with unsafe + = note: only trait implementations may be annotated with `unsafe` error: aborting due to 1 previous error diff --git a/tests/ui/traits/syntax-trait-polarity.stderr b/tests/ui/traits/syntax-trait-polarity.stderr index a623cdbef3a..8ffcdc7d8b5 100644 --- a/tests/ui/traits/syntax-trait-polarity.stderr +++ b/tests/ui/traits/syntax-trait-polarity.stderr @@ -5,6 +5,8 @@ LL | impl !TestType {} | -^^^^^^^^ inherent impl for this type | | | negative because of this + | + = note: only trait implementations may be annotated with `!` error: inherent impls cannot be negative --> $DIR/syntax-trait-polarity.rs:18:10 @@ -13,6 +15,8 @@ LL | impl !TestType2 {} | -^^^^^^^^^^^^ inherent impl for this type | | | negative because of this + | + = note: only trait implementations may be annotated with `!` error[E0198]: negative impls cannot be unsafe --> $DIR/syntax-trait-polarity.rs:12:13 -- cgit 1.4.1-3-g733a5 From 5bc23ce25548d7f4a9f6ceaa48cc3d8fe7629f58 Mon Sep 17 00:00:00 2001 From: Cameron Steffen Date: Mon, 21 Jul 2025 20:05:16 -0500 Subject: Extract ast TraitImplHeader --- compiler/rustc_ast/src/ast.rs | 21 ++++---- compiler/rustc_ast/src/visit.rs | 9 +++- compiler/rustc_ast_lowering/src/item.rs | 45 +++++++++++------ compiler/rustc_ast_passes/src/ast_validation.rs | 26 ++++------ compiler/rustc_ast_passes/src/feature_gate.rs | 8 ++-- compiler/rustc_ast_pretty/src/pprust/state/item.rs | 56 +++++++++++----------- .../src/deriving/coerce_pointee.rs | 32 +++++++------ .../src/deriving/generic/mod.rs | 22 +++++---- compiler/rustc_lint/src/builtin.rs | 5 +- compiler/rustc_lint/src/internal.rs | 8 ++-- compiler/rustc_lint/src/nonstandard_style.rs | 2 +- compiler/rustc_parse/src/parser/item.rs | 27 +++++------ compiler/rustc_resolve/src/build_reduced_graph.rs | 7 +-- compiler/rustc_resolve/src/late.rs | 14 +++--- src/tools/clippy/clippy_utils/src/ast_utils/mod.rs | 26 ++++------ src/tools/rustfmt/src/items.rs | 51 ++++++++------------ src/tools/rustfmt/tests/source/negative-impl.rs | 4 -- src/tools/rustfmt/tests/target/negative-impl.rs | 8 ---- 18 files changed, 187 insertions(+), 184 deletions(-) (limited to 'compiler/rustc_parse/src') diff --git a/compiler/rustc_ast/src/ast.rs b/compiler/rustc_ast/src/ast.rs index 8160ed3cc46..87c9c797ea5 100644 --- a/compiler/rustc_ast/src/ast.rs +++ b/compiler/rustc_ast/src/ast.rs @@ -3661,15 +3661,19 @@ pub struct TyAlias { #[derive(Clone, Encodable, Decodable, Debug)] pub struct Impl { + pub generics: Generics, + pub of_trait: Option>, + pub self_ty: Box, + pub items: ThinVec>, +} + +#[derive(Clone, Encodable, Decodable, Debug)] +pub struct TraitImplHeader { pub defaultness: Defaultness, pub safety: Safety, - pub generics: Generics, pub constness: Const, pub polarity: ImplPolarity, - /// The trait being implemented, if any. - pub of_trait: Option, - pub self_ty: Box, - pub items: ThinVec>, + pub trait_ref: TraitRef, } #[derive(Clone, Encodable, Decodable, Debug, Default, Walkable)] @@ -3793,7 +3797,7 @@ pub enum ItemKind { /// An implementation. /// /// E.g., `impl Foo { .. }` or `impl Trait for Foo { .. }`. - Impl(Box), + Impl(Impl), /// A macro invocation. /// /// E.g., `foo!(..)`. @@ -3880,7 +3884,7 @@ impl ItemKind { | Self::Union(_, generics, _) | Self::Trait(box Trait { generics, .. }) | Self::TraitAlias(_, generics, _) - | Self::Impl(box Impl { generics, .. }) => Some(generics), + | Self::Impl(Impl { generics, .. }) => Some(generics), _ => None, } } @@ -4040,7 +4044,7 @@ mod size_asserts { static_assert_size!(GenericArg, 24); static_assert_size!(GenericBound, 88); static_assert_size!(Generics, 40); - static_assert_size!(Impl, 136); + static_assert_size!(Impl, 64); static_assert_size!(Item, 144); static_assert_size!(ItemKind, 80); static_assert_size!(LitKind, 24); @@ -4053,6 +4057,7 @@ mod size_asserts { static_assert_size!(PathSegment, 24); static_assert_size!(Stmt, 32); static_assert_size!(StmtKind, 16); + static_assert_size!(TraitImplHeader, 80); static_assert_size!(Ty, 64); static_assert_size!(TyKind, 40); // tidy-alphabetical-end diff --git a/compiler/rustc_ast/src/visit.rs b/compiler/rustc_ast/src/visit.rs index 5fdce27db53..68b3d2b0368 100644 --- a/compiler/rustc_ast/src/visit.rs +++ b/compiler/rustc_ast/src/visit.rs @@ -929,8 +929,13 @@ macro_rules! common_visitor_and_walkers { } impl_walkable!(|&$($mut)? $($lt)? self: Impl, vis: &mut V| { - let Impl { defaultness, safety, generics, constness, polarity, of_trait, self_ty, items } = self; - visit_visitable!($($mut)? vis, defaultness, safety, generics, constness, polarity, of_trait, self_ty); + let Impl { generics, of_trait, self_ty, items } = self; + try_visit!(vis.visit_generics(generics)); + if let Some(box of_trait) = of_trait { + let TraitImplHeader { defaultness, safety, constness, polarity, trait_ref } = of_trait; + visit_visitable!($($mut)? vis, defaultness, safety, constness, polarity, trait_ref); + } + try_visit!(vis.visit_ty(self_ty)); visit_visitable_with!($($mut)? vis, items, AssocCtxt::Impl { of_trait: of_trait.is_some() }); V::Result::output() }); diff --git a/compiler/rustc_ast_lowering/src/item.rs b/compiler/rustc_ast_lowering/src/item.rs index ac6fac4c08e..231752700ba 100644 --- a/compiler/rustc_ast_lowering/src/item.rs +++ b/compiler/rustc_ast_lowering/src/item.rs @@ -340,13 +340,9 @@ impl<'hir> LoweringContext<'_, 'hir> { ); hir::ItemKind::Union(ident, generics, vdata) } - ItemKind::Impl(box Impl { - safety, - polarity, - defaultness, - constness, + ItemKind::Impl(Impl { generics: ast_generics, - of_trait: trait_ref, + of_trait, self_ty: ty, items: impl_items, }) => { @@ -373,10 +369,10 @@ impl<'hir> LoweringContext<'_, 'hir> { polarity: BoundPolarity::Positive, }; - let trait_ref = trait_ref.as_ref().map(|trait_ref| { + let trait_ref = of_trait.as_ref().map(|of_trait| { this.lower_trait_ref( modifiers, - trait_ref, + &of_trait.trait_ref, ImplTraitContext::Disallowed(ImplTraitPosition::Trait), ) }); @@ -396,14 +392,35 @@ impl<'hir> LoweringContext<'_, 'hir> { // `defaultness.has_value()` is never called for an `impl`, always `true` in order // to not cause an assertion failure inside the `lower_defaultness` function. let has_val = true; - let (defaultness, defaultness_span) = self.lower_defaultness(*defaultness, has_val); - let polarity = match polarity { - ImplPolarity::Positive => ImplPolarity::Positive, - ImplPolarity::Negative(s) => ImplPolarity::Negative(self.lower_span(*s)), + let (constness, safety, polarity, defaultness, defaultness_span) = match *of_trait { + Some(box TraitImplHeader { + constness, + safety, + polarity, + defaultness, + trait_ref: _, + }) => { + let constness = self.lower_constness(constness); + let safety = self.lower_safety(safety, hir::Safety::Safe); + let polarity = match polarity { + ImplPolarity::Positive => ImplPolarity::Positive, + ImplPolarity::Negative(s) => ImplPolarity::Negative(self.lower_span(s)), + }; + let (defaultness, defaultness_span) = + self.lower_defaultness(defaultness, has_val); + (constness, safety, polarity, defaultness, defaultness_span) + } + None => ( + hir::Constness::NotConst, + hir::Safety::Safe, + ImplPolarity::Positive, + hir::Defaultness::Final, + None, + ), }; hir::ItemKind::Impl(self.arena.alloc(hir::Impl { - constness: self.lower_constness(*constness), - safety: self.lower_safety(*safety, hir::Safety::Safe), + constness, + safety, polarity, defaultness, defaultness_span, diff --git a/compiler/rustc_ast_passes/src/ast_validation.rs b/compiler/rustc_ast_passes/src/ast_validation.rs index 1fffb617c50..dc2eb17589c 100644 --- a/compiler/rustc_ast_passes/src/ast_validation.rs +++ b/compiler/rustc_ast_passes/src/ast_validation.rs @@ -954,13 +954,16 @@ impl<'a> Visitor<'a> for AstValidator<'a> { } match &item.kind { - ItemKind::Impl(box Impl { - safety, - polarity, - defaultness: _, - constness, + ItemKind::Impl(Impl { generics, - of_trait: Some(t), + of_trait: + Some(box TraitImplHeader { + safety, + polarity, + defaultness: _, + constness, + trait_ref: t, + }), self_ty, items, }) => { @@ -992,16 +995,7 @@ impl<'a> Visitor<'a> for AstValidator<'a> { walk_list!(this, visit_assoc_item, items, AssocCtxt::Impl { of_trait: true }); }); } - ItemKind::Impl(box Impl { - safety: _, - polarity: _, - defaultness: _, - constness: _, - generics, - of_trait: None, - self_ty, - items, - }) => { + ItemKind::Impl(Impl { generics, of_trait: None, self_ty, items }) => { self.visit_attrs_vis(&item.attrs, &item.vis); self.visibility_not_permitted( &item.vis, diff --git a/compiler/rustc_ast_passes/src/feature_gate.rs b/compiler/rustc_ast_passes/src/feature_gate.rs index 662357ce884..c9344a76a7b 100644 --- a/compiler/rustc_ast_passes/src/feature_gate.rs +++ b/compiler/rustc_ast_passes/src/feature_gate.rs @@ -217,18 +217,18 @@ impl<'a> Visitor<'a> for PostExpansionVisitor<'a> { } } - ast::ItemKind::Impl(box ast::Impl { polarity, defaultness, of_trait, .. }) => { - if let &ast::ImplPolarity::Negative(span) = polarity { + ast::ItemKind::Impl(ast::Impl { of_trait: Some(of_trait), .. }) => { + if let ast::ImplPolarity::Negative(span) = of_trait.polarity { gate!( &self, negative_impls, - span.to(of_trait.as_ref().map_or(span, |t| t.path.span)), + span.to(of_trait.trait_ref.path.span), "negative trait bounds are not fully implemented; \ use marker types for now" ); } - if let ast::Defaultness::Default(_) = defaultness { + if let ast::Defaultness::Default(_) = of_trait.defaultness { gate!(&self, specialization, i.span, "specialization is unstable"); } } diff --git a/compiler/rustc_ast_pretty/src/pprust/state/item.rs b/compiler/rustc_ast_pretty/src/pprust/state/item.rs index 6e34d1b61db..ab402cbb8dc 100644 --- a/compiler/rustc_ast_pretty/src/pprust/state/item.rs +++ b/compiler/rustc_ast_pretty/src/pprust/state/item.rs @@ -308,39 +308,41 @@ impl<'a> State<'a> { let (cb, ib) = self.head(visibility_qualified(&item.vis, "union")); self.print_struct(struct_def, generics, *ident, item.span, true, cb, ib); } - ast::ItemKind::Impl(box ast::Impl { - safety, - polarity, - defaultness, - constness, - generics, - of_trait, - self_ty, - items, - }) => { + ast::ItemKind::Impl(ast::Impl { generics, of_trait, self_ty, items }) => { let (cb, ib) = self.head(""); self.print_visibility(&item.vis); - self.print_defaultness(*defaultness); - self.print_safety(*safety); - self.word("impl"); - - if generics.params.is_empty() { - self.nbsp(); - } else { - self.print_generic_params(&generics.params); - self.space(); - } - self.print_constness(*constness); + let impl_generics = |this: &mut Self| { + this.word("impl"); - if let ast::ImplPolarity::Negative(_) = polarity { - self.word("!"); - } - - if let Some(t) = of_trait { - self.print_trait_ref(t); + if generics.params.is_empty() { + this.nbsp(); + } else { + this.print_generic_params(&generics.params); + this.space(); + } + }; + + if let Some(box of_trait) = of_trait { + let ast::TraitImplHeader { + defaultness, + safety, + constness, + polarity, + ref trait_ref, + } = *of_trait; + self.print_defaultness(defaultness); + self.print_safety(safety); + impl_generics(self); + self.print_constness(constness); + if let ast::ImplPolarity::Negative(_) = polarity { + self.word("!"); + } + self.print_trait_ref(trait_ref); self.space(); self.word_space("for"); + } else { + impl_generics(self); } self.print_type(self_ty); diff --git a/compiler/rustc_builtin_macros/src/deriving/coerce_pointee.rs b/compiler/rustc_builtin_macros/src/deriving/coerce_pointee.rs index 6082e376435..75db5d77783 100644 --- a/compiler/rustc_builtin_macros/src/deriving/coerce_pointee.rs +++ b/compiler/rustc_builtin_macros/src/deriving/coerce_pointee.rs @@ -108,11 +108,7 @@ pub(crate) fn expand_deriving_coerce_pointee( cx.item( span, attrs.clone(), - ast::ItemKind::Impl(Box::new(ast::Impl { - safety: ast::Safety::Default, - polarity: ast::ImplPolarity::Positive, - defaultness: ast::Defaultness::Final, - constness: ast::Const::No, + ast::ItemKind::Impl(ast::Impl { generics: Generics { params: generics .params @@ -137,10 +133,16 @@ pub(crate) fn expand_deriving_coerce_pointee( where_clause: generics.where_clause.clone(), span: generics.span, }, - of_trait: Some(trait_ref), + of_trait: Some(Box::new(ast::TraitImplHeader { + safety: ast::Safety::Default, + polarity: ast::ImplPolarity::Positive, + defaultness: ast::Defaultness::Final, + constness: ast::Const::No, + trait_ref, + })), self_ty: self_type.clone(), items: ThinVec::new(), - })), + }), ), )); } @@ -152,16 +154,18 @@ pub(crate) fn expand_deriving_coerce_pointee( let item = cx.item( span, attrs.clone(), - ast::ItemKind::Impl(Box::new(ast::Impl { - safety: ast::Safety::Default, - polarity: ast::ImplPolarity::Positive, - defaultness: ast::Defaultness::Final, - constness: ast::Const::No, + ast::ItemKind::Impl(ast::Impl { generics, - of_trait: Some(trait_ref), + of_trait: Some(Box::new(ast::TraitImplHeader { + safety: ast::Safety::Default, + polarity: ast::ImplPolarity::Positive, + defaultness: ast::Defaultness::Final, + constness: ast::Const::No, + trait_ref, + })), self_ty: self_type.clone(), items: ThinVec::new(), - })), + }), ); push(Annotatable::Item(item)); }; diff --git a/compiler/rustc_builtin_macros/src/deriving/generic/mod.rs b/compiler/rustc_builtin_macros/src/deriving/generic/mod.rs index 3f4b47152c4..3fcf9da9450 100644 --- a/compiler/rustc_builtin_macros/src/deriving/generic/mod.rs +++ b/compiler/rustc_builtin_macros/src/deriving/generic/mod.rs @@ -826,21 +826,25 @@ impl<'a> TraitDef<'a> { ) } - let opt_trait_ref = Some(trait_ref); - cx.item( self.span, attrs, - ast::ItemKind::Impl(Box::new(ast::Impl { - safety: ast::Safety::Default, - polarity: ast::ImplPolarity::Positive, - defaultness: ast::Defaultness::Final, - constness: if self.is_const { ast::Const::Yes(DUMMY_SP) } else { ast::Const::No }, + ast::ItemKind::Impl(ast::Impl { generics: trait_generics, - of_trait: opt_trait_ref, + of_trait: Some(Box::new(ast::TraitImplHeader { + safety: ast::Safety::Default, + polarity: ast::ImplPolarity::Positive, + defaultness: ast::Defaultness::Final, + constness: if self.is_const { + ast::Const::Yes(DUMMY_SP) + } else { + ast::Const::No + }, + trait_ref, + })), self_ty: self_type, items: methods.into_iter().chain(associated_types).collect(), - })), + }), ) } diff --git a/compiler/rustc_lint/src/builtin.rs b/compiler/rustc_lint/src/builtin.rs index c893b723375..54769f9e097 100644 --- a/compiler/rustc_lint/src/builtin.rs +++ b/compiler/rustc_lint/src/builtin.rs @@ -270,7 +270,10 @@ impl EarlyLintPass for UnsafeCode { self.report_unsafe(cx, it.span, BuiltinUnsafe::UnsafeTrait); } - ast::ItemKind::Impl(box ast::Impl { safety: ast::Safety::Unsafe(_), .. }) => { + ast::ItemKind::Impl(ast::Impl { + of_trait: Some(box ast::TraitImplHeader { safety: ast::Safety::Unsafe(_), .. }), + .. + }) => { self.report_unsafe(cx, it.span, BuiltinUnsafe::UnsafeImpl); } diff --git a/compiler/rustc_lint/src/internal.rs b/compiler/rustc_lint/src/internal.rs index 7dafcc199a3..9f02f1f0df3 100644 --- a/compiler/rustc_lint/src/internal.rs +++ b/compiler/rustc_lint/src/internal.rs @@ -411,11 +411,11 @@ declare_lint_pass!(LintPassImpl => [LINT_PASS_IMPL_WITHOUT_MACRO]); impl EarlyLintPass for LintPassImpl { fn check_item(&mut self, cx: &EarlyContext<'_>, item: &ast::Item) { - if let ast::ItemKind::Impl(box ast::Impl { of_trait: Some(lint_pass), .. }) = &item.kind - && let Some(last) = lint_pass.path.segments.last() + if let ast::ItemKind::Impl(ast::Impl { of_trait: Some(of_trait), .. }) = &item.kind + && let Some(last) = of_trait.trait_ref.path.segments.last() && last.ident.name == sym::LintPass { - let expn_data = lint_pass.path.span.ctxt().outer_expn_data(); + let expn_data = of_trait.trait_ref.path.span.ctxt().outer_expn_data(); let call_site = expn_data.call_site; if expn_data.kind != ExpnKind::Macro(MacroKind::Bang, sym::impl_lint_pass) && call_site.ctxt().outer_expn_data().kind @@ -423,7 +423,7 @@ impl EarlyLintPass for LintPassImpl { { cx.emit_span_lint( LINT_PASS_IMPL_WITHOUT_MACRO, - lint_pass.path.span, + of_trait.trait_ref.path.span, LintPassByHand, ); } diff --git a/compiler/rustc_lint/src/nonstandard_style.rs b/compiler/rustc_lint/src/nonstandard_style.rs index 7e5f43ba77f..8fafaa33d0c 100644 --- a/compiler/rustc_lint/src/nonstandard_style.rs +++ b/compiler/rustc_lint/src/nonstandard_style.rs @@ -187,7 +187,7 @@ impl EarlyLintPass for NonCamelCaseTypes { // N.B. This check is only for inherent associated types, so that we don't lint against // trait impls where we should have warned for the trait definition already. - ast::ItemKind::Impl(box ast::Impl { of_trait: None, items, .. }) => { + ast::ItemKind::Impl(ast::Impl { of_trait: None, items, .. }) => { for it in items { // FIXME: this doesn't respect `#[allow(..)]` on the item itself. if let ast::AssocItemKind::Type(alias) = &it.kind { diff --git a/compiler/rustc_parse/src/parser/item.rs b/compiler/rustc_parse/src/parser/item.rs index 75cb103d5d6..607adaf0829 100644 --- a/compiler/rustc_parse/src/parser/item.rs +++ b/compiler/rustc_parse/src/parser/item.rs @@ -663,7 +663,14 @@ impl<'a> Parser<'a> { }; let trait_ref = TraitRef { path, ref_id: ty_first.id }; - (Some(trait_ref), ty_second) + let of_trait = Some(Box::new(TraitImplHeader { + defaultness, + safety, + constness, + polarity, + trait_ref, + })); + (of_trait, ty_second) } None => { let self_ty = ty_first; @@ -692,16 +699,8 @@ impl<'a> Parser<'a> { (None, self_ty) } }; - Ok(ItemKind::Impl(Box::new(Impl { - safety, - polarity, - defaultness, - constness, - generics, - of_trait, - self_ty, - items: impl_items, - }))) + + Ok(ItemKind::Impl(Impl { generics, of_trait, self_ty, items: impl_items })) } fn parse_item_delegation(&mut self) -> PResult<'a, ItemKind> { @@ -1389,10 +1388,10 @@ impl<'a> Parser<'a> { }; match &mut item_kind { - ItemKind::Impl(box Impl { of_trait: Some(trai), constness, .. }) => { - *constness = Const::Yes(const_span); + ItemKind::Impl(Impl { of_trait: Some(of_trait), .. }) => { + of_trait.constness = Const::Yes(const_span); - let before_trait = trai.path.span.shrink_to_lo(); + let before_trait = of_trait.trait_ref.path.span.shrink_to_lo(); let const_up_to_impl = const_span.with_hi(impl_span.lo()); err.with_multipart_suggestion( "you might have meant to write a const trait impl", diff --git a/compiler/rustc_resolve/src/build_reduced_graph.rs b/compiler/rustc_resolve/src/build_reduced_graph.rs index d18d0fc16a8..3fee2ab6afe 100644 --- a/compiler/rustc_resolve/src/build_reduced_graph.rs +++ b/compiler/rustc_resolve/src/build_reduced_graph.rs @@ -11,7 +11,7 @@ use std::sync::Arc; use rustc_ast::visit::{self, AssocCtxt, Visitor, WalkItemKind}; use rustc_ast::{ self as ast, AssocItem, AssocItemKind, Block, ConstItem, Delegation, Fn, ForeignItem, - ForeignItemKind, Impl, Item, ItemKind, NodeId, StaticItem, StmtKind, TyAlias, + ForeignItemKind, Item, ItemKind, NodeId, StaticItem, StmtKind, TyAlias, }; use rustc_attr_parsing as attr; use rustc_attr_parsing::AttributeParser; @@ -906,10 +906,7 @@ impl<'a, 'ra, 'tcx> BuildReducedGraphVisitor<'a, 'ra, 'tcx> { } // These items do not add names to modules. - ItemKind::Impl(box Impl { of_trait: Some(..), .. }) - | ItemKind::Impl { .. } - | ItemKind::ForeignMod(..) - | ItemKind::GlobalAsm(..) => {} + ItemKind::Impl { .. } | ItemKind::ForeignMod(..) | ItemKind::GlobalAsm(..) => {} ItemKind::MacroDef(..) | ItemKind::MacCall(_) | ItemKind::DelegationMac(..) => { unreachable!() diff --git a/compiler/rustc_resolve/src/late.rs b/compiler/rustc_resolve/src/late.rs index 953b72fd72b..e52cbeb733a 100644 --- a/compiler/rustc_resolve/src/late.rs +++ b/compiler/rustc_resolve/src/late.rs @@ -2620,7 +2620,7 @@ impl<'a, 'ast, 'ra, 'tcx> LateResolutionVisitor<'a, 'ast, 'ra, 'tcx> { self.resolve_adt(item, generics); } - ItemKind::Impl(box Impl { + ItemKind::Impl(Impl { ref generics, ref of_trait, ref self_ty, @@ -2631,7 +2631,7 @@ impl<'a, 'ast, 'ra, 'tcx> LateResolutionVisitor<'a, 'ast, 'ra, 'tcx> { self.resolve_implementation( &item.attrs, generics, - of_trait, + of_trait.as_deref(), self_ty, item.id, impl_items, @@ -3177,7 +3177,7 @@ impl<'a, 'ast, 'ra, 'tcx> LateResolutionVisitor<'a, 'ast, 'ra, 'tcx> { &mut self, attrs: &[ast::Attribute], generics: &'ast Generics, - opt_trait_reference: &'ast Option, + of_trait: Option<&'ast ast::TraitImplHeader>, self_type: &'ast Ty, item_id: NodeId, impl_items: &'ast [Box], @@ -3201,7 +3201,7 @@ impl<'a, 'ast, 'ra, 'tcx> LateResolutionVisitor<'a, 'ast, 'ra, 'tcx> { |this| { // Resolve the trait reference, if necessary. this.with_optional_trait_ref( - opt_trait_reference.as_ref(), + of_trait.map(|t| &t.trait_ref), self_type, |this, trait_id| { this.resolve_doc_links(attrs, MaybeExported::Impl(trait_id)); @@ -3224,9 +3224,9 @@ impl<'a, 'ast, 'ra, 'tcx> LateResolutionVisitor<'a, 'ast, 'ra, 'tcx> { is_trait_impl: trait_id.is_some() }; this.with_self_rib(res, |this| { - if let Some(trait_ref) = opt_trait_reference.as_ref() { + if let Some(of_trait) = of_trait { // Resolve type arguments in the trait path. - visit::walk_trait_ref(this, trait_ref); + visit::walk_trait_ref(this, &of_trait.trait_ref); } // Resolve the self type. this.visit_ty(self_type); @@ -5183,7 +5183,7 @@ impl<'ast> Visitor<'ast> for ItemInfoCollector<'_, '_, '_> { | ItemKind::Enum(_, generics, _) | ItemKind::Struct(_, generics, _) | ItemKind::Union(_, generics, _) - | ItemKind::Impl(box Impl { generics, .. }) + | ItemKind::Impl(Impl { generics, .. }) | ItemKind::Trait(box Trait { generics, .. }) | ItemKind::TraitAlias(_, generics, _) => { if let ItemKind::Fn(box Fn { sig, .. }) = &item.kind { diff --git a/src/tools/clippy/clippy_utils/src/ast_utils/mod.rs b/src/tools/clippy/clippy_utils/src/ast_utils/mod.rs index 0312bf56e59..24e017f7cf7 100644 --- a/src/tools/clippy/clippy_utils/src/ast_utils/mod.rs +++ b/src/tools/clippy/clippy_utils/src/ast_utils/mod.rs @@ -473,33 +473,27 @@ pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { eq_id(*li, *ri) && eq_generics(lg, rg) && over(lb, rb, eq_generic_bound) }, ( - Impl(box ast::Impl { - safety: lu, - polarity: lp, - defaultness: ld, - constness: lc, + Impl(ast::Impl { generics: lg, of_trait: lot, self_ty: lst, items: li, }), - Impl(box ast::Impl { - safety: ru, - polarity: rp, - defaultness: rd, - constness: rc, + Impl(ast::Impl { 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_generics(lg, rg) + && both(lot.as_deref(), rot.as_deref(), |l, r| { + matches!(l.safety, Safety::Default) == matches!(r.safety, Safety::Default) + && matches!(l.polarity, ImplPolarity::Positive) == matches!(r.polarity, ImplPolarity::Positive) + && eq_defaultness(l.defaultness, r.defaultness) + && matches!(l.constness, ast::Const::No) == matches!(r.constness, ast::Const::No) + && eq_path(&l.trait_ref.path, &r.trait_ref.path) + }) && eq_ty(lst, rst) && over(li, ri, |l, r| eq_item(l, r, eq_assoc_item_kind)) }, diff --git a/src/tools/rustfmt/src/items.rs b/src/tools/rustfmt/src/items.rs index 57d4142ebe4..10df6f96702 100644 --- a/src/tools/rustfmt/src/items.rs +++ b/src/tools/rustfmt/src/items.rs @@ -958,20 +958,19 @@ fn format_impl_ref_and_type( offset: Indent, ) -> Option { let ast::Impl { - safety, - polarity, - defaultness, - constness, - ref generics, - of_trait: ref trait_ref, - ref self_ty, - .. - } = *iimpl; + generics, + of_trait, + self_ty, + items: _, + } = iimpl; let mut result = String::with_capacity(128); result.push_str(&format_visibility(context, &item.vis)); - result.push_str(format_defaultness(defaultness)); - result.push_str(format_safety(safety)); + + if let Some(of_trait) = of_trait.as_deref() { + result.push_str(format_defaultness(of_trait.defaultness)); + result.push_str(format_safety(of_trait.safety)); + } let shape = if context.config.style_edition() >= StyleEdition::Edition2024 { Shape::indented(offset + last_line_width(&result), context.config) @@ -984,28 +983,24 @@ fn format_impl_ref_and_type( }; let generics_str = rewrite_generics(context, "impl", generics, shape).ok()?; result.push_str(&generics_str); - result.push_str(format_constness_right(constness)); - let polarity_str = match polarity { - ast::ImplPolarity::Negative(_) => "!", - ast::ImplPolarity::Positive => "", - }; - - let polarity_overhead; let trait_ref_overhead; - if let Some(ref trait_ref) = *trait_ref { + if let Some(of_trait) = of_trait.as_deref() { + result.push_str(format_constness_right(of_trait.constness)); + let polarity_str = match of_trait.polarity { + ast::ImplPolarity::Negative(_) => "!", + ast::ImplPolarity::Positive => "", + }; let result_len = last_line_width(&result); result.push_str(&rewrite_trait_ref( context, - trait_ref, + &of_trait.trait_ref, offset, polarity_str, result_len, )?); - polarity_overhead = 0; // already written trait_ref_overhead = " for".len(); } else { - polarity_overhead = polarity_str.len(); trait_ref_overhead = 0; } @@ -1020,17 +1015,15 @@ fn format_impl_ref_and_type( } else { 0 }; - let used_space = - last_line_width(&result) + polarity_overhead + trait_ref_overhead + curly_brace_overhead; + let used_space = last_line_width(&result) + trait_ref_overhead + curly_brace_overhead; // 1 = space before the type. let budget = context.budget(used_space + 1); if let Some(self_ty_str) = self_ty.rewrite(context, Shape::legacy(budget, offset)) { if !self_ty_str.contains('\n') { - if trait_ref.is_some() { + if of_trait.is_some() { result.push_str(" for "); } else { result.push(' '); - result.push_str(polarity_str); } result.push_str(&self_ty_str); return Some(result); @@ -1042,12 +1035,10 @@ fn format_impl_ref_and_type( // Add indentation of one additional tab. let new_line_offset = offset.block_indent(context.config); result.push_str(&new_line_offset.to_string(context.config)); - if trait_ref.is_some() { + if of_trait.is_some() { result.push_str("for "); - } else { - result.push_str(polarity_str); } - let budget = context.budget(last_line_width(&result) + polarity_overhead); + let budget = context.budget(last_line_width(&result)); let type_offset = match context.config.indent_style() { IndentStyle::Visual => new_line_offset + trait_ref_overhead, IndentStyle::Block => new_line_offset, diff --git a/src/tools/rustfmt/tests/source/negative-impl.rs b/src/tools/rustfmt/tests/source/negative-impl.rs index da242d4f3dc..e8f9508e656 100644 --- a/src/tools/rustfmt/tests/source/negative-impl.rs +++ b/src/tools/rustfmt/tests/source/negative-impl.rs @@ -1,7 +1,3 @@ impl ! Display for JoinHandle { } -impl ! Box < JoinHandle > { } - impl ! std :: fmt :: Display for JoinHandle < T : std :: future :: Future + std :: marker :: Send + std :: marker :: Sync > { } - -impl ! JoinHandle < T : std :: future :: Future < Output > + std :: marker :: Send + std :: marker :: Sync + 'static > + 'static { } diff --git a/src/tools/rustfmt/tests/target/negative-impl.rs b/src/tools/rustfmt/tests/target/negative-impl.rs index 16ce7e26a99..bb53048dbc6 100644 --- a/src/tools/rustfmt/tests/target/negative-impl.rs +++ b/src/tools/rustfmt/tests/target/negative-impl.rs @@ -1,14 +1,6 @@ impl !Display for JoinHandle {} -impl !Box {} - impl !std::fmt::Display for JoinHandle { } - -impl - !JoinHandle + std::marker::Send + std::marker::Sync + 'static> - + 'static -{ -} -- cgit 1.4.1-3-g733a5