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Add an ErrorGuaranteed to ast::TyKind::Err.

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This makes it more like `hir::TyKind::Err`, and avoids a
`span_delayed_bug` call in `LoweringContext::lower_ty_direct`.

It also requires adding `ast::TyKind::Dummy`, now that
`ast::TyKind::Err` can't be used for that purpose in the absence of an
error emission.

There are a couple of cases that aren't as neat as I would have liked,
marked with `FIXME` comments.
This commit is contained in:
Nicholas Nethercote 2024-02-14 14:50:49 +11:00
parent b3b9f31a86
commit d2aa1beed7
1 changed files with 1 additions and 1 deletions
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clippy_utils/src/ast_utils.rs
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@ -690,7 +690,7 @@ pub fn eq_ty(l: &Ty, r: &Ty) -> bool {
match (&l.kind, &r.kind) {
(Paren(l), _) => eq_ty(l, r),
(_, Paren(r)) => eq_ty(l, r),
(Never, Never) | (Infer, Infer) | (ImplicitSelf, ImplicitSelf) | (Err, Err) | (CVarArgs, CVarArgs) => true,
(Never, Never) | (Infer, Infer) | (ImplicitSelf, ImplicitSelf) | (Err(_), Err(_)) | (CVarArgs, CVarArgs) => true,
(Slice(l), Slice(r)) => eq_ty(l, r),
(Array(le, ls), Array(re, rs)) => eq_ty(le, re) && eq_expr(&ls.value, &rs.value),
(Ptr(l), Ptr(r)) => l.mutbl == r.mutbl && eq_ty(&l.ty, &r.ty),