bjoernager/rust
bjoernager/rust
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add a #[rustc_coinductive] attribute

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This commit is contained in:
lcnr 2023-02-14 10:17:19 +01:00
parent e9ab7872fd
commit 646e667200
7 changed files with 44 additions and 33 deletions
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12
compiler/rustc_hir_analysis/src/collect.rs
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@ -934,9 +934,10 @@ fn trait_def(tcx: TyCtxt<'_>, def_id: DefId) -> ty::TraitDef {
}
let is_marker = tcx.has_attr(def_id, sym::marker);
let rustc_coinductive = tcx.has_attr(def_id, sym::rustc_coinductive);
let skip_array_during_method_dispatch =
tcx.has_attr(def_id, sym::rustc_skip_array_during_method_dispatch);
let spec_kind = if tcx.has_attr(def_id, sym::rustc_unsafe_specialization_marker) {
let specialization_kind = if tcx.has_attr(def_id, sym::rustc_unsafe_specialization_marker) {
ty::trait_def::TraitSpecializationKind::Marker
} else if tcx.has_attr(def_id, sym::rustc_specialization_trait) {
ty::trait_def::TraitSpecializationKind::AlwaysApplicable
@ -1036,16 +1037,17 @@ fn trait_def(tcx: TyCtxt<'_>, def_id: DefId) -> ty::TraitDef {
no_dups.then_some(list)
});
ty::TraitDef::new(
ty::TraitDef {
def_id,
unsafety,
paren_sugar,
is_auto,
has_auto_impl: is_auto,
is_marker,
is_coinductive: rustc_coinductive || is_auto,
skip_array_during_method_dispatch,
spec_kind,
specialization_kind,
must_implement_one_of,
)
}
}
fn are_suggestable_generic_args(generic_args: &[hir::GenericArg<'_>]) -> bool {