| //! 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 e29821ff85a2a3000d226f99f62f89464028d5d6. |
| //! |
| //! 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; |
| |
| /// Ignored attribute namespaces used by tools. |
| pub const TOOL_MODULES: &[&str] = &["rustfmt", "clippy"]; |
| |
| 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() |
| } |
| |
| // impl AttributeTemplate { |
| // const DEFAULT: AttributeTemplate = |
| // AttributeTemplate { word: false, list: None, name_value_str: None }; |
| // } |
| |
| /// 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: |
| gated!(unix_sigpipe, Normal, template!(Word, NameValueStr: "inherit|sig_ign|sig_dfl"), ErrorFollowing, experimental!(unix_sigpipe)), |
| 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, 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_returns_twice, Normal, template!(Word), WarnFollowing, experimental!(ffi_returns_twice) |
| ), |
| 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", |
| ), |
| ungated!(rustc_safe_intrinsic, Normal, template!(Word), DuplicatesOk), |
| 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 |
| ), |
| // 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 |
| ), |
| |
| // ========================================================================== |
| // 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_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!(Word), ErrorFollowing, @only_local: false, |
| "#[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"#, |
| ), |
| |
| // ========================================================================== |
| // 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_layout, Normal, template!(List: "field1, field2, ..."), WarnFollowing), |
| rustc_attr!(TEST, rustc_regions, Normal, template!(Word), WarnFollowing), |
| rustc_attr!( |
| TEST, rustc_error, Normal, |
| template!(Word, List: "delay_span_bug_from_inside_query"), WarnFollowingWordOnly |
| ), |
| rustc_attr!(TEST, rustc_dump_user_substs, 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", |
| ), |
| ]; |
