bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

get_attr should check that no duplicates are allowed

Browse source
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
Download patch file Download diff file Expand all files Collapse all files

8
compiler/rustc_feature/src/builtin_attrs.rs
View file

@ -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();

4
compiler/rustc_feature/src/lib.rs
View file

@ -151,7 +151,7 @@ pub use active::{Features, ACTIVE_FEATURES, INCOMPATIBLE_FEATURES};
pub use builtin_attrs::AttributeDuplicates;
pub use builtin_attrs::{
deprecated_attributes, find_gated_cfg, is_builtin_attr_name, is_builtin_only_local,
AttributeGate, AttributeTemplate, AttributeType, BuiltinAttribute, GatedCfg,
BUILTIN_ATTRIBUTES, BUILTIN_ATTRIBUTE_MAP,
is_valid_for_get_attr, AttributeGate, AttributeTemplate, AttributeType, BuiltinAttribute,
GatedCfg, BUILTIN_ATTRIBUTES, BUILTIN_ATTRIBUTE_MAP,
};
pub use removed::{REMOVED_FEATURES, STABLE_REMOVED_FEATURES};