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Lowering field access for anonymous adts

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This commit is contained in:
Frank King
2024-01-04 21:45:06 +08:00
parent 36d7e7fd3f
commit 0c0df4efe0
18 changed files with 391 additions and 71 deletions
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27
compiler/rustc_ast_lowering/src/lib.rs
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@@ -1299,33 +1299,28 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
// // ^_____________________|
// }
// ```
TyKind::AnonStruct(def_node_id, fields) | TyKind::AnonUnion(def_node_id, fields) => {
let (def_kind, item_kind): (DefKind, fn(_, _) -> _) = match t.kind {
TyKind::AnonStruct(..) => (DefKind::Struct, hir::ItemKind::Struct),
TyKind::AnonUnion(..) => (DefKind::Union, hir::ItemKind::Union),
_ => unreachable!(),
};
let def_id = self.create_def(
self.current_hir_id_owner.def_id,
*def_node_id,
kw::Empty,
def_kind,
t.span,
);
TyKind::AnonStruct(node_id, fields) | TyKind::AnonUnion(node_id, fields) => {
// Here its `def_id` is created in `build_reduced_graph`.
let def_id = self.local_def_id(*node_id);
debug!(?def_id);
let owner_id = hir::OwnerId { def_id };
self.with_hir_id_owner(*def_node_id, |this| {
self.with_hir_id_owner(*node_id, |this| {
let fields = this.arena.alloc_from_iter(
fields.iter().enumerate().map(|f| this.lower_field_def(f)),
);
let span = t.span;
let variant_data = hir::VariantData::Struct(fields, false);
let variant_data = hir::VariantData::Struct { fields, recovered: false };
// FIXME: capture the generics from the outer adt.
let generics = hir::Generics::empty();
let kind = match t.kind {
TyKind::AnonStruct(..) => hir::ItemKind::Struct(variant_data, generics),
TyKind::AnonUnion(..) => hir::ItemKind::Union(variant_data, generics),
_ => unreachable!(),
};
hir::OwnerNode::Item(this.arena.alloc(hir::Item {
ident: Ident::new(kw::Empty, span),
owner_id,
kind: item_kind(variant_data, generics),
kind,
span: this.lower_span(span),
vis_span: this.lower_span(span.shrink_to_lo()),
}))