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Rollup merge of #106960 - estebank:parse-anon-enums, r=cjgillot

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Teach parser to understand fake anonymous enum syntax

Parse `Ty | OtherTy` in function argument and return types.
Parse type ascription in top level patterns.

Minimally address #100741.
This commit is contained in:
Matthias Krüger 2023-01-26 06:15:24 +01:00 • committed by GitHub
commit ba928ba041
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9 changed files with 266 additions and 47 deletions
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4
compiler/rustc_ast/src/visit.rs
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@ -400,8 +400,8 @@ pub fn walk_ty<'a, V: Visitor<'a>>(visitor: &mut V, typ: &'a Ty) {
walk_list!(visitor, visit_lifetime, opt_lifetime, LifetimeCtxt::Ref);
visitor.visit_ty(&mutable_type.ty)
}
TyKind::Tup(tuple_element_types) => {
walk_list!(visitor, visit_ty, tuple_element_types);
TyKind::Tup(tys) => {
walk_list!(visitor, visit_ty, tys);
}
TyKind::BareFn(function_declaration) => {
walk_list!(visitor, visit_generic_param, &function_declaration.generic_params);