Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/hir-expand/src/inert_attr_macro.rs')
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diff --git a/crates/hir-expand/src/inert_attr_macro.rs b/crates/hir-expand/src/inert_attr_macro.rs new file mode 100644 index 0000000000..35fd85bf45 --- /dev/null +++ b/crates/hir-expand/src/inert_attr_macro.rs @@ -0,0 +1,692 @@ +//! Builtin attributes resolved by nameres. +//! +//! The actual definitions were copied from rustc's `compiler/rustc_feature/src/builtin_attrs.rs`. +//! +//! It was last synchronized with upstream commit c3def263a44e07e09ae6d57abfc8650227fb4972. +//! +//! The macros were adjusted to only expand to the attribute name, since that is all we need to do +//! name resolution, and `BUILTIN_ATTRIBUTES` is almost entirely unchanged from the original, to +//! ease updating. + +use std::sync::OnceLock; + +use rustc_hash::FxHashMap; + +pub struct BuiltinAttribute { + pub name: &'static str, + pub template: AttributeTemplate, +} + +/// A template that the attribute input must match. +/// Only top-level shape (`#[attr]` vs `#[attr(...)]` vs `#[attr = ...]`) is considered now. +#[derive(Clone, Copy)] +pub struct AttributeTemplate { + pub word: bool, + pub list: Option<&'static str>, + pub name_value_str: Option<&'static str>, +} + +pub fn find_builtin_attr_idx(name: &str) -> Option<usize> { + static BUILTIN_LOOKUP_TABLE: OnceLock<FxHashMap<&'static str, usize>> = OnceLock::new(); + BUILTIN_LOOKUP_TABLE + .get_or_init(|| { + INERT_ATTRIBUTES.iter().map(|attr| attr.name).enumerate().map(|(a, b)| (b, a)).collect() + }) + .get(name) + .copied() +} + +/// A convenience macro for constructing attribute templates. +/// E.g., `template!(Word, List: "description")` means that the attribute +/// supports forms `#[attr]` and `#[attr(description)]`. +macro_rules! template { + (Word) => { template!(@ true, None, None) }; + (List: $descr: expr) => { template!(@ false, Some($descr), None) }; + (NameValueStr: $descr: expr) => { template!(@ false, None, Some($descr)) }; + (Word, List: $descr: expr) => { template!(@ true, Some($descr), None) }; + (Word, NameValueStr: $descr: expr) => { template!(@ true, None, Some($descr)) }; + (List: $descr1: expr, NameValueStr: $descr2: expr) => { + template!(@ false, Some($descr1), Some($descr2)) + }; + (Word, List: $descr1: expr, NameValueStr: $descr2: expr) => { + template!(@ true, Some($descr1), Some($descr2)) + }; + (@ $word: expr, $list: expr, $name_value_str: expr) => { + AttributeTemplate { + word: $word, list: $list, name_value_str: $name_value_str + } + }; +} + +macro_rules! ungated { + ($attr:ident, $typ:expr, $tpl:expr, $duplicates:expr $(, @only_local: $only_local:expr)? $(,)?) => { + BuiltinAttribute { name: stringify!($attr), template: $tpl } + }; +} + +macro_rules! gated { + ($attr:ident, $typ:expr, $tpl:expr, $duplicates:expr $(, @only_local: $only_local:expr)?, $gate:ident, $msg:expr $(,)?) => { + BuiltinAttribute { name: stringify!($attr), template: $tpl } + }; + ($attr:ident, $typ:expr, $tpl:expr, $duplicates:expr $(, @only_local: $only_local:expr)?, $msg:expr $(,)?) => { + BuiltinAttribute { name: stringify!($attr), template: $tpl } + }; +} + +macro_rules! rustc_attr { + (TEST, $attr:ident, $typ:expr, $tpl:expr, $duplicate:expr $(, @only_local: $only_local:expr)? $(,)?) => { + rustc_attr!( + $attr, + $typ, + $tpl, + $duplicate, + $(@only_local: $only_local,)? + concat!( + "the `#[", + stringify!($attr), + "]` attribute is just used for rustc unit tests \ + and will never be stable", + ), + ) + }; + ($attr:ident, $typ:expr, $tpl:expr, $duplicates:expr $(, @only_local: $only_local:expr)?, $msg:expr $(,)?) => { + BuiltinAttribute { name: stringify!($attr), template: $tpl } + }; +} + +#[allow(unused_macros)] +macro_rules! experimental { + ($attr:ident) => { + concat!("the `#[", stringify!($attr), "]` attribute is an experimental feature") + }; +} + +/// Attributes that have a special meaning to rustc or rustdoc. +#[rustfmt::skip] +pub const INERT_ATTRIBUTES: &[BuiltinAttribute] = &[ + // ========================================================================== + // Stable attributes: + // ========================================================================== + + // Conditional compilation: + ungated!(cfg, Normal, template!(List: "predicate"), DuplicatesOk), + ungated!(cfg_attr, Normal, template!(List: "predicate, attr1, attr2, ..."), DuplicatesOk), + + // Testing: + ungated!(ignore, Normal, template!(Word, NameValueStr: "reason"), WarnFollowing), + ungated!( + should_panic, Normal, + template!(Word, List: r#"expected = "reason""#, NameValueStr: "reason"), FutureWarnFollowing, + ), + // FIXME(Centril): This can be used on stable but shouldn't. + ungated!(reexport_test_harness_main, CrateLevel, template!(NameValueStr: "name"), ErrorFollowing), + + // Macros: + ungated!(automatically_derived, Normal, template!(Word), WarnFollowing), + ungated!(macro_use, Normal, template!(Word, List: "name1, name2, ..."), WarnFollowingWordOnly), + ungated!(macro_escape, Normal, template!(Word), WarnFollowing), // Deprecated synonym for `macro_use`. + ungated!(macro_export, Normal, template!(Word, List: "local_inner_macros"), WarnFollowing), + ungated!(proc_macro, Normal, template!(Word), ErrorFollowing), + ungated!( + proc_macro_derive, Normal, + template!(List: "TraitName, /*opt*/ attributes(name1, name2, ...)"), ErrorFollowing, + ), + ungated!(proc_macro_attribute, Normal, template!(Word), ErrorFollowing), + + // Lints: + ungated!( + warn, Normal, template!(List: r#"lint1, lint2, ..., /*opt*/ reason = "...""#), + DuplicatesOk, @only_local: true, + ), + ungated!( + allow, Normal, template!(List: r#"lint1, lint2, ..., /*opt*/ reason = "...""#), + DuplicatesOk, @only_local: true, + ), + gated!( + expect, Normal, template!(List: r#"lint1, lint2, ..., /*opt*/ reason = "...""#), DuplicatesOk, + lint_reasons, experimental!(expect) + ), + ungated!( + forbid, Normal, template!(List: r#"lint1, lint2, ..., /*opt*/ reason = "...""#), + DuplicatesOk, @only_local: true, + ), + ungated!( + deny, Normal, template!(List: r#"lint1, lint2, ..., /*opt*/ reason = "...""#), + DuplicatesOk, @only_local: true, + ), + ungated!(must_use, Normal, template!(Word, NameValueStr: "reason"), FutureWarnFollowing), + gated!( + must_not_suspend, Normal, template!(Word, NameValueStr: "reason"), WarnFollowing, + experimental!(must_not_suspend) + ), + ungated!( + deprecated, Normal, + template!( + Word, + List: r#"/*opt*/ since = "version", /*opt*/ note = "reason""#, + NameValueStr: "reason" + ), + ErrorFollowing + ), + + // Crate properties: + ungated!(crate_name, CrateLevel, template!(NameValueStr: "name"), FutureWarnFollowing), + ungated!(crate_type, CrateLevel, template!(NameValueStr: "bin|lib|..."), DuplicatesOk), + // crate_id is deprecated + ungated!(crate_id, CrateLevel, template!(NameValueStr: "ignored"), FutureWarnFollowing), + + // ABI, linking, symbols, and FFI + ungated!( + link, Normal, + template!(List: r#"name = "...", /*opt*/ kind = "dylib|static|...", /*opt*/ wasm_import_module = "...", /*opt*/ import_name_type = "decorated|noprefix|undecorated""#), + DuplicatesOk, + ), + ungated!(link_name, Normal, template!(NameValueStr: "name"), FutureWarnPreceding), + ungated!(no_link, Normal, template!(Word), WarnFollowing), + ungated!(repr, Normal, template!(List: "C"), DuplicatesOk, @only_local: true), + ungated!(export_name, Normal, template!(NameValueStr: "name"), FutureWarnPreceding), + ungated!(link_section, Normal, template!(NameValueStr: "name"), FutureWarnPreceding), + ungated!(no_mangle, Normal, template!(Word), WarnFollowing, @only_local: true), + ungated!(used, Normal, template!(Word, List: "compiler|linker"), WarnFollowing, @only_local: true), + ungated!(link_ordinal, Normal, template!(List: "ordinal"), ErrorPreceding), + + // Limits: + ungated!(recursion_limit, CrateLevel, template!(NameValueStr: "N"), FutureWarnFollowing), + ungated!(type_length_limit, CrateLevel, template!(NameValueStr: "N"), FutureWarnFollowing), + gated!( + move_size_limit, CrateLevel, template!(NameValueStr: "N"), ErrorFollowing, + large_assignments, experimental!(move_size_limit) + ), + + // Entry point: + ungated!(start, Normal, template!(Word), WarnFollowing), + ungated!(no_start, CrateLevel, template!(Word), WarnFollowing), + ungated!(no_main, CrateLevel, template!(Word), WarnFollowing), + + // Modules, prelude, and resolution: + ungated!(path, Normal, template!(NameValueStr: "file"), FutureWarnFollowing), + ungated!(no_std, CrateLevel, template!(Word), WarnFollowing), + ungated!(no_implicit_prelude, Normal, template!(Word), WarnFollowing), + ungated!(non_exhaustive, Normal, template!(Word), WarnFollowing), + + // Runtime + ungated!( + windows_subsystem, CrateLevel, + template!(NameValueStr: "windows|console"), FutureWarnFollowing + ), + ungated!(panic_handler, Normal, template!(Word), WarnFollowing), // RFC 2070 + + // Code generation: + ungated!(inline, Normal, template!(Word, List: "always|never"), FutureWarnFollowing, @only_local: true), + ungated!(cold, Normal, template!(Word), WarnFollowing, @only_local: true), + ungated!(no_builtins, CrateLevel, template!(Word), WarnFollowing), + ungated!( + target_feature, Normal, template!(List: r#"enable = "name""#), + DuplicatesOk, @only_local: true, + ), + ungated!(track_caller, Normal, template!(Word), WarnFollowing), + ungated!(instruction_set, Normal, template!(List: "set"), ErrorPreceding), + gated!( + no_sanitize, Normal, + template!(List: "address, kcfi, memory, thread"), DuplicatesOk, + experimental!(no_sanitize) + ), + gated!(coverage, Normal, template!(Word, List: "on|off"), WarnFollowing, coverage_attribute, experimental!(coverage)), + + ungated!( + doc, Normal, template!(List: "hidden|inline|...", NameValueStr: "string"), DuplicatesOk + ), + + // Debugging + ungated!( + debugger_visualizer, Normal, + template!(List: r#"natvis_file = "...", gdb_script_file = "...""#), DuplicatesOk + ), + + // ========================================================================== + // Unstable attributes: + // ========================================================================== + + // Linking: + gated!( + naked, Normal, template!(Word), WarnFollowing, @only_local: true, + naked_functions, experimental!(naked) + ), + + // Testing: + gated!( + test_runner, CrateLevel, template!(List: "path"), ErrorFollowing, custom_test_frameworks, + "custom test frameworks are an unstable feature", + ), + // RFC #1268 + gated!( + marker, Normal, template!(Word), WarnFollowing, @only_local: true, + marker_trait_attr, experimental!(marker) + ), + gated!( + thread_local, Normal, template!(Word), WarnFollowing, + "`#[thread_local]` is an experimental feature, and does not currently handle destructors", + ), + gated!(no_core, CrateLevel, template!(Word), WarnFollowing, experimental!(no_core)), + // RFC 2412 + gated!( + optimize, Normal, template!(List: "size|speed"), ErrorPreceding, optimize_attribute, + experimental!(optimize), + ), + + gated!(ffi_pure, Normal, template!(Word), WarnFollowing, experimental!(ffi_pure)), + gated!(ffi_const, Normal, template!(Word), WarnFollowing, experimental!(ffi_const)), + gated!( + register_tool, CrateLevel, template!(List: "tool1, tool2, ..."), DuplicatesOk, + experimental!(register_tool), + ), + + gated!( + cmse_nonsecure_entry, Normal, template!(Word), WarnFollowing, + experimental!(cmse_nonsecure_entry) + ), + // RFC 2632 + gated!( + const_trait, Normal, template!(Word), WarnFollowing, const_trait_impl, + "`const_trait` is a temporary placeholder for marking a trait that is suitable for `const` \ + `impls` and all default bodies as `const`, which may be removed or renamed in the \ + future." + ), + // lang-team MCP 147 + gated!( + deprecated_safe, Normal, template!(List: r#"since = "version", note = "...""#), ErrorFollowing, + experimental!(deprecated_safe), + ), + + // `#[collapse_debuginfo]` + gated!( + collapse_debuginfo, Normal, template!(Word), WarnFollowing, + experimental!(collapse_debuginfo) + ), + + // RFC 2397 + gated!(do_not_recommend, Normal, template!(Word), WarnFollowing, experimental!(do_not_recommend)), + + // `#[cfi_encoding = ""]` + gated!( + cfi_encoding, Normal, template!(NameValueStr: "encoding"), ErrorPreceding, + experimental!(cfi_encoding) + ), + + // ========================================================================== + // Internal attributes: Stability, deprecation, and unsafe: + // ========================================================================== + + ungated!( + feature, CrateLevel, + template!(List: "name1, name2, ..."), DuplicatesOk, @only_local: true, + ), + // DuplicatesOk since it has its own validation + ungated!( + stable, Normal, + template!(List: r#"feature = "name", since = "version""#), DuplicatesOk, @only_local: true, + ), + ungated!( + unstable, Normal, + template!(List: r#"feature = "name", reason = "...", issue = "N""#), DuplicatesOk, + ), + ungated!(rustc_const_unstable, Normal, template!(List: r#"feature = "name""#), DuplicatesOk), + ungated!( + rustc_const_stable, Normal, + template!(List: r#"feature = "name""#), DuplicatesOk, @only_local: true, + ), + ungated!( + rustc_default_body_unstable, Normal, + template!(List: r#"feature = "name", reason = "...", issue = "N""#), DuplicatesOk + ), + gated!( + allow_internal_unstable, Normal, template!(Word, List: "feat1, feat2, ..."), DuplicatesOk, + "allow_internal_unstable side-steps feature gating and stability checks", + ), + gated!( + rustc_allow_const_fn_unstable, Normal, + template!(Word, List: "feat1, feat2, ..."), DuplicatesOk, + "rustc_allow_const_fn_unstable side-steps feature gating and stability checks" + ), + gated!( + allow_internal_unsafe, Normal, template!(Word), WarnFollowing, + "allow_internal_unsafe side-steps the unsafe_code lint", + ), + rustc_attr!(rustc_allowed_through_unstable_modules, Normal, template!(Word), WarnFollowing, + "rustc_allowed_through_unstable_modules special cases accidental stabilizations of stable items \ + through unstable paths"), + + // ========================================================================== + // Internal attributes: Type system related: + // ========================================================================== + + gated!(fundamental, Normal, template!(Word), WarnFollowing, experimental!(fundamental)), + gated!( + may_dangle, Normal, template!(Word), WarnFollowing, dropck_eyepatch, + "`may_dangle` has unstable semantics and may be removed in the future", + ), + + // ========================================================================== + // Internal attributes: Runtime related: + // ========================================================================== + + rustc_attr!(rustc_allocator, Normal, template!(Word), WarnFollowing, IMPL_DETAIL), + rustc_attr!(rustc_nounwind, Normal, template!(Word), WarnFollowing, IMPL_DETAIL), + rustc_attr!(rustc_reallocator, Normal, template!(Word), WarnFollowing, IMPL_DETAIL), + rustc_attr!(rustc_deallocator, Normal, template!(Word), WarnFollowing, IMPL_DETAIL), + rustc_attr!(rustc_allocator_zeroed, Normal, template!(Word), WarnFollowing, IMPL_DETAIL), + gated!( + default_lib_allocator, Normal, template!(Word), WarnFollowing, allocator_internals, + experimental!(default_lib_allocator), + ), + gated!( + needs_allocator, Normal, template!(Word), WarnFollowing, allocator_internals, + experimental!(needs_allocator), + ), + gated!(panic_runtime, Normal, template!(Word), WarnFollowing, experimental!(panic_runtime)), + gated!( + needs_panic_runtime, Normal, template!(Word), WarnFollowing, + experimental!(needs_panic_runtime) + ), + gated!( + compiler_builtins, Normal, template!(Word), WarnFollowing, + "the `#[compiler_builtins]` attribute is used to identify the `compiler_builtins` crate \ + which contains compiler-rt intrinsics and will never be stable", + ), + gated!( + profiler_runtime, Normal, template!(Word), WarnFollowing, + "the `#[profiler_runtime]` attribute is used to identify the `profiler_builtins` crate \ + which contains the profiler runtime and will never be stable", + ), + + // ========================================================================== + // Internal attributes, Linkage: + // ========================================================================== + + gated!( + linkage, Normal, template!(NameValueStr: "external|internal|..."), ErrorPreceding, @only_local: true, + "the `linkage` attribute is experimental and not portable across platforms", + ), + rustc_attr!( + rustc_std_internal_symbol, Normal, template!(Word), WarnFollowing, @only_local: true, INTERNAL_UNSTABLE + ), + + // ========================================================================== + // Internal attributes, Macro related: + // ========================================================================== + + rustc_attr!( + rustc_builtin_macro, Normal, + template!(Word, List: "name, /*opt*/ attributes(name1, name2, ...)"), ErrorFollowing, + IMPL_DETAIL, + ), + rustc_attr!(rustc_proc_macro_decls, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE), + rustc_attr!( + rustc_macro_transparency, Normal, + template!(NameValueStr: "transparent|semitransparent|opaque"), ErrorFollowing, + "used internally for testing macro hygiene", + ), + + // ========================================================================== + // Internal attributes, Diagnostics related: + // ========================================================================== + + rustc_attr!( + rustc_on_unimplemented, Normal, + template!( + List: r#"/*opt*/ message = "...", /*opt*/ label = "...", /*opt*/ note = "...""#, + NameValueStr: "message" + ), + ErrorFollowing, + INTERNAL_UNSTABLE + ), + rustc_attr!( + rustc_confusables, Normal, + template!(List: r#""name1", "name2", ..."#), + ErrorFollowing, + INTERNAL_UNSTABLE, + ), + // Enumerates "identity-like" conversion methods to suggest on type mismatch. + rustc_attr!( + rustc_conversion_suggestion, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE + ), + // Prevents field reads in the marked trait or method to be considered + // during dead code analysis. + rustc_attr!( + rustc_trivial_field_reads, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE + ), + // Used by the `rustc::potential_query_instability` lint to warn methods which + // might not be stable during incremental compilation. + rustc_attr!(rustc_lint_query_instability, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE), + // Used by the `rustc::untranslatable_diagnostic` and `rustc::diagnostic_outside_of_impl` lints + // to assist in changes to diagnostic APIs. + rustc_attr!(rustc_lint_diagnostics, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE), + // Used by the `rustc::bad_opt_access` lint to identify `DebuggingOptions` and `CodegenOptions` + // types (as well as any others in future). + rustc_attr!(rustc_lint_opt_ty, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE), + // Used by the `rustc::bad_opt_access` lint on fields + // types (as well as any others in future). + rustc_attr!(rustc_lint_opt_deny_field_access, Normal, template!(List: "message"), WarnFollowing, INTERNAL_UNSTABLE), + + // ========================================================================== + // Internal attributes, Const related: + // ========================================================================== + + rustc_attr!(rustc_promotable, Normal, template!(Word), WarnFollowing, IMPL_DETAIL), + rustc_attr!( + rustc_legacy_const_generics, Normal, template!(List: "N"), ErrorFollowing, + INTERNAL_UNSTABLE + ), + // Do not const-check this function's body. It will always get replaced during CTFE. + rustc_attr!( + rustc_do_not_const_check, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE + ), + // Ensure the argument to this function is &&str during const-check. + rustc_attr!( + rustc_const_panic_str, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE + ), + + // ========================================================================== + // Internal attributes, Layout related: + // ========================================================================== + + rustc_attr!( + rustc_layout_scalar_valid_range_start, Normal, template!(List: "value"), ErrorFollowing, + "the `#[rustc_layout_scalar_valid_range_start]` attribute is just used to enable \ + niche optimizations in libcore and libstd and will never be stable", + ), + rustc_attr!( + rustc_layout_scalar_valid_range_end, Normal, template!(List: "value"), ErrorFollowing, + "the `#[rustc_layout_scalar_valid_range_end]` attribute is just used to enable \ + niche optimizations in libcore and libstd and will never be stable", + ), + rustc_attr!( + rustc_nonnull_optimization_guaranteed, Normal, template!(Word), WarnFollowing, + "the `#[rustc_nonnull_optimization_guaranteed]` attribute is just used to enable \ + niche optimizations in libcore and libstd and will never be stable", + ), + + // ========================================================================== + // Internal attributes, Misc: + // ========================================================================== + gated!( + lang, Normal, template!(NameValueStr: "name"), DuplicatesOk, @only_local: true, lang_items, + "language items are subject to change", + ), + rustc_attr!( + rustc_pass_by_value, Normal, template!(Word), ErrorFollowing, + "#[rustc_pass_by_value] is used to mark types that must be passed by value instead of reference." + ), + rustc_attr!( + rustc_never_returns_null_ptr, Normal, template!(Word), ErrorFollowing, + "#[rustc_never_returns_null_ptr] is used to mark functions returning non-null pointers." + ), + rustc_attr!( + rustc_coherence_is_core, AttributeType::CrateLevel, template!(Word), ErrorFollowing, @only_local: true, + "#![rustc_coherence_is_core] allows inherent methods on builtin types, only intended to be used in `core`." + ), + rustc_attr!( + rustc_coinductive, AttributeType::Normal, template!(Word), WarnFollowing, @only_local: true, + "#![rustc_coinductive] changes a trait to be coinductive, allowing cycles in the trait solver." + ), + rustc_attr!( + rustc_allow_incoherent_impl, AttributeType::Normal, template!(Word), ErrorFollowing, @only_local: true, + "#[rustc_allow_incoherent_impl] has to be added to all impl items of an incoherent inherent impl." + ), + rustc_attr!( + rustc_deny_explicit_impl, + AttributeType::Normal, + template!(List: "implement_via_object = (true|false)"), + ErrorFollowing, + @only_local: true, + "#[rustc_deny_explicit_impl] enforces that a trait can have no user-provided impls" + ), + rustc_attr!( + rustc_has_incoherent_inherent_impls, AttributeType::Normal, template!(Word), ErrorFollowing, + "#[rustc_has_incoherent_inherent_impls] allows the addition of incoherent inherent impls for \ + the given type by annotating all impl items with #[rustc_allow_incoherent_impl]." + ), + rustc_attr!( + rustc_box, AttributeType::Normal, template!(Word), ErrorFollowing, + "#[rustc_box] allows creating boxes \ + and it is only intended to be used in `alloc`." + ), + + BuiltinAttribute { + // name: sym::rustc_diagnostic_item, + name: "rustc_diagnostic_item", + // FIXME: This can be `true` once we always use `tcx.is_diagnostic_item`. + // only_local: false, + // type_: Normal, + template: template!(NameValueStr: "name"), + // duplicates: ErrorFollowing, + // gate: Gated( + // Stability::Unstable, + // sym::rustc_attrs, + // "diagnostic items compiler internal support for linting", + // cfg_fn!(rustc_attrs), + // ), + }, + gated!( + // Used in resolve: + prelude_import, Normal, template!(Word), WarnFollowing, + "`#[prelude_import]` is for use by rustc only", + ), + gated!( + rustc_paren_sugar, Normal, template!(Word), WarnFollowing, unboxed_closures, + "unboxed_closures are still evolving", + ), + rustc_attr!( + rustc_inherit_overflow_checks, Normal, template!(Word), WarnFollowing, @only_local: true, + "the `#[rustc_inherit_overflow_checks]` attribute is just used to control \ + overflow checking behavior of several libcore functions that are inlined \ + across crates and will never be stable", + ), + rustc_attr!( + rustc_reservation_impl, Normal, + template!(NameValueStr: "reservation message"), ErrorFollowing, + "the `#[rustc_reservation_impl]` attribute is internally used \ + for reserving for `for<T> From<!> for T` impl" + ), + rustc_attr!( + rustc_test_marker, Normal, template!(NameValueStr: "name"), WarnFollowing, + "the `#[rustc_test_marker]` attribute is used internally to track tests", + ), + rustc_attr!( + rustc_unsafe_specialization_marker, Normal, template!(Word), WarnFollowing, + "the `#[rustc_unsafe_specialization_marker]` attribute is used to check specializations" + ), + rustc_attr!( + rustc_specialization_trait, Normal, template!(Word), WarnFollowing, + "the `#[rustc_specialization_trait]` attribute is used to check specializations" + ), + rustc_attr!( + rustc_main, Normal, template!(Word), WarnFollowing, + "the `#[rustc_main]` attribute is used internally to specify test entry point function", + ), + rustc_attr!( + rustc_skip_array_during_method_dispatch, Normal, template!(Word), WarnFollowing, + "the `#[rustc_skip_array_during_method_dispatch]` attribute is used to exclude a trait \ + from method dispatch when the receiver is an array, for compatibility in editions < 2021." + ), + rustc_attr!( + rustc_must_implement_one_of, Normal, template!(List: "function1, function2, ..."), ErrorFollowing, + "the `#[rustc_must_implement_one_of]` attribute is used to change minimal complete \ + definition of a trait, it's currently in experimental form and should be changed before \ + being exposed outside of the std" + ), + rustc_attr!( + rustc_doc_primitive, Normal, template!(NameValueStr: "primitive name"), ErrorFollowing, + r#"`rustc_doc_primitive` is a rustc internal attribute"#, + ), + rustc_attr!( + rustc_safe_intrinsic, Normal, template!(Word), WarnFollowing, + "the `#[rustc_safe_intrinsic]` attribute is used internally to mark intrinsics as safe" + ), + rustc_attr!( + rustc_deprecated_safe_2024, Normal, template!(Word), WarnFollowing, + "the `#[rustc_safe_intrinsic]` marks functions as unsafe in Rust 2024", + ), + + // ========================================================================== + // Internal attributes, Testing: + // ========================================================================== + + rustc_attr!(TEST, rustc_effective_visibility, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_outlives, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_capture_analysis, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_insignificant_dtor, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_strict_coherence, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_variance, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_variance_of_opaques, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_hidden_type_of_opaques, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_layout, Normal, template!(List: "field1, field2, ..."), WarnFollowing), + rustc_attr!(TEST, rustc_abi, Normal, template!(List: "field1, field2, ..."), WarnFollowing), + rustc_attr!(TEST, rustc_regions, Normal, template!(Word), WarnFollowing), + rustc_attr!( + TEST, rustc_error, Normal, + template!(Word, List: "delayed_bug_from_inside_query"), WarnFollowingWordOnly + ), + rustc_attr!(TEST, rustc_dump_user_args, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_evaluate_where_clauses, Normal, template!(Word), WarnFollowing), + rustc_attr!( + TEST, rustc_if_this_changed, Normal, template!(Word, List: "DepNode"), DuplicatesOk + ), + rustc_attr!( + TEST, rustc_then_this_would_need, Normal, template!(List: "DepNode"), DuplicatesOk + ), + rustc_attr!( + TEST, rustc_clean, Normal, + template!(List: r#"cfg = "...", /*opt*/ label = "...", /*opt*/ except = "...""#), + DuplicatesOk, + ), + rustc_attr!( + TEST, rustc_partition_reused, Normal, + template!(List: r#"cfg = "...", module = "...""#), DuplicatesOk, + ), + rustc_attr!( + TEST, rustc_partition_codegened, Normal, + template!(List: r#"cfg = "...", module = "...""#), DuplicatesOk, + ), + rustc_attr!( + TEST, rustc_expected_cgu_reuse, Normal, + template!(List: r#"cfg = "...", module = "...", kind = "...""#), DuplicatesOk, + ), + rustc_attr!(TEST, rustc_symbol_name, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_polymorphize_error, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_def_path, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_mir, Normal, template!(List: "arg1, arg2, ..."), DuplicatesOk), + gated!( + custom_mir, Normal, template!(List: r#"dialect = "...", phase = "...""#), + ErrorFollowing, "the `#[custom_mir]` attribute is just used for the Rust test suite", + ), + rustc_attr!(TEST, rustc_dump_program_clauses, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_dump_env_program_clauses, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_object_lifetime_default, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_dump_vtable, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_dummy, Normal, template!(Word /* doesn't matter*/), DuplicatesOk), + gated!( + omit_gdb_pretty_printer_section, Normal, template!(Word), WarnFollowing, + "the `#[omit_gdb_pretty_printer_section]` attribute is just used for the Rust test suite", + ), +]; |