bjoernager/rust
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When parsing patterns, bubble all errors except reserved idents that aren't likely to appear in for head or match arm

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This commit is contained in:
Esteban Küber 2023-11-06 21:06:20 +00:00
parent 44fd3b4d46
commit ed084a9343
6 changed files with 221 additions and 7 deletions
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14
compiler/rustc_parse/src/parser/pat.rs
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@ -141,7 +141,19 @@ impl<'a> Parser<'a> {
};
// Parse the first pattern (`p_0`).
let mut first_pat = self.parse_pat_no_top_alt(expected, syntax_loc)?;
let mut first_pat = match self.parse_pat_no_top_alt(expected, syntax_loc) {
Ok(pat) => pat,
Err(mut err)
if self.token.is_reserved_ident()
&& !self.token.is_keyword(kw::In)
&& !self.token.is_keyword(kw::If) =>
{
err.emit();
self.bump();
self.mk_pat(self.token.span, PatKind::Wild)
}
Err(err) => return Err(err),
};
if rc == RecoverComma::Yes {
self.maybe_recover_unexpected_comma(
first_pat.span,