bjoernager/rust
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delay the bug once again, generalize turbofish suggestion

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This commit is contained in:
Michael Goulet 2022-01-25 11:08:37 -08:00
parent a090bb1dea
commit 37bed05986
6 changed files with 19 additions and 47 deletions
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7
compiler/rustc_parse/src/parser/expr.rs
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@ -1448,8 +1448,6 @@ impl<'a> Parser<'a> {
let lo = label.ident.span;
let label = Some(label);
let ate_colon = self.eat(&token::Colon);
let msg = "expected `while`, `for`, `loop` or `{` after a label";
let expr = if self.eat_keyword(kw::While) {
self.parse_while_expr(label, lo, attrs)
} else if self.eat_keyword(kw::For) {
@ -1459,12 +1457,13 @@ impl<'a> Parser<'a> {
} else if self.check(&token::OpenDelim(token::Brace)) || self.token.is_whole_block() {
self.parse_block_expr(label, lo, BlockCheckMode::Default, attrs)
} else if !ate_colon && (self.check(&TokenKind::Comma) || self.check(&TokenKind::Gt)) {
self.struct_span_err(self.token.span, msg).span_label(self.token.span, msg).emit();
// We're probably inside of a `Path<'a>` that needs a turbofish, so suppress the
// "must be followed by a colon" error.
// "must be followed by a colon" error, and the "expected one of" error.
self.diagnostic().delay_span_bug(lo, "this label wasn't parsed correctly");
consume_colon = false;
Ok(self.mk_expr_err(lo))
} else {
let msg = "expected `while`, `for`, `loop` or `{` after a label";
self.struct_span_err(self.token.span, msg).span_label(self.token.span, msg).emit();
// Continue as an expression in an effort to recover on `'label: non_block_expr`.
self.parse_expr()