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get_attr should check that no duplicates are allowed

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This commit is contained in:
yukang 2022-09-06 14:16:54 +08:00
parent 676afc5149
commit 00b10a5552
7 changed files with 38 additions and 5 deletions
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8
compiler/rustc_feature/src/builtin_attrs.rs
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@ -823,6 +823,14 @@ pub fn is_builtin_only_local(name: Symbol) -> bool {
BUILTIN_ATTRIBUTE_MAP.get(&name).map_or(false, |attr| attr.only_local)
}
pub fn is_valid_for_get_attr(name: Symbol) -> bool {
BUILTIN_ATTRIBUTE_MAP.get(&name).map_or(false, |attr| match attr.duplicates {
WarnFollowing | ErrorFollowing | ErrorPreceding | FutureWarnFollowing
| FutureWarnPreceding => true,
DuplicatesOk | WarnFollowingWordOnly => false,
})
}
pub static BUILTIN_ATTRIBUTE_MAP: LazyLock<FxHashMap<Symbol, &BuiltinAttribute>> =
LazyLock::new(|| {
let mut map = FxHashMap::default();