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Recover keywords in bounds

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For example, this fixes a error for `impl fn()` (notice the capitalization)
This commit is contained in:
Maybe Waffle 2022-07-29 20:04:28 +04:00
parent e5682615bb
commit c6558c0bc7
3 changed files with 18 additions and 5 deletions
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8
compiler/rustc_parse/src/parser/ty.rs
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@ -640,7 +640,13 @@ impl<'a> Parser<'a> {
let mut bounds = Vec::new();
let mut negative_bounds = Vec::new();
while self.can_begin_bound() || self.token.is_keyword(kw::Dyn) {
while self.can_begin_bound()
// Continue even if we find a keyword.
// This is necessary for error recover on, for example, `impl fn()`.
//
// The only keyword that can go after generic bounds is `where`, so stop if it's it.
|| (self.token.is_reserved_ident() && !self.token.is_keyword(kw::Where))
{
if self.token.is_keyword(kw::Dyn) {
// Account for `&dyn Trait + dyn Other`.
self.struct_span_err(self.token.span, "invalid `dyn` keyword")