bjoernager/rust
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Store the laziness of type aliases in the DefKind

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León Orell Valerian Liehr 2023-08-06 23:02:27 +02:00
parent 34ccd04859
commit 5468336d6b
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GPG key ID: D17A07215F68E713
49 changed files with 208 additions and 93 deletions
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4
compiler/rustc_ty_utils/src/implied_bounds.rs
View file

@ -128,7 +128,7 @@ fn assumed_wf_types<'tcx>(tcx: TyCtxt<'tcx>, def_id: LocalDefId) -> &'tcx [(Ty<'
},
DefKind::AssocConst | DefKind::AssocTy => tcx.assumed_wf_types(tcx.local_parent(def_id)),
DefKind::OpaqueTy => match tcx.def_kind(tcx.local_parent(def_id)) {
DefKind::TyAlias => ty::List::empty(),
DefKind::TyAlias { .. } => ty::List::empty(),
DefKind::AssocTy => tcx.assumed_wf_types(tcx.local_parent(def_id)),
// Nested opaque types only occur in associated types:
// ` type Opaque<T> = impl Trait<&'static T, AssocTy = impl Nested>; `
@ -145,7 +145,7 @@ fn assumed_wf_types<'tcx>(tcx: TyCtxt<'tcx>, def_id: LocalDefId) -> &'tcx [(Ty<'
| DefKind::Enum
| DefKind::Variant
| DefKind::Trait
| DefKind::TyAlias
| DefKind::TyAlias { .. }
| DefKind::ForeignTy
| DefKind::TraitAlias
| DefKind::TyParam

8
compiler/rustc_ty_utils/src/opaque_types.rs
View file

@ -53,7 +53,9 @@ impl<'tcx> OpaqueTypeCollector<'tcx> {
fn parent(&self) -> Option<LocalDefId> {
match self.tcx.def_kind(self.item) {
DefKind::AnonConst | DefKind::InlineConst | DefKind::Fn | DefKind::TyAlias => None,
DefKind::AnonConst | DefKind::InlineConst | DefKind::Fn | DefKind::TyAlias { .. } => {
None
}
DefKind::AssocFn | DefKind::AssocTy | DefKind::AssocConst => {
Some(self.tcx.local_parent(self.item))
}
@ -116,7 +118,7 @@ impl<'tcx> OpaqueTypeCollector<'tcx> {
#[instrument(level = "trace", skip(self))]
fn visit_nested_item(&mut self, id: rustc_hir::ItemId) {
let id = id.owner_id.def_id;
if let DefKind::TyAlias = self.collector.tcx.def_kind(id) {
if let DefKind::TyAlias { .. } = self.collector.tcx.def_kind(id) {
let items = self.collector.tcx.opaque_types_defined_by(id);
self.collector.opaques.extend(items);
}
@ -295,7 +297,7 @@ fn opaque_types_defined_by<'tcx>(tcx: TyCtxt<'tcx>, item: LocalDefId) -> &'tcx [
collector.collect_body_and_predicate_taits();
}
// We're also doing this for `AssocTy` for the wf checks in `check_opaque_meets_bounds`
DefKind::TyAlias | DefKind::AssocTy => {
DefKind::TyAlias { .. } | DefKind::AssocTy => {
tcx.type_of(item).instantiate_identity().visit_with(&mut collector);
}
DefKind::OpaqueTy => {