diff options
Diffstat (limited to 'compiler/rustc_parse/src/parser/diagnostics.rs')
| -rw-r--r-- | compiler/rustc_parse/src/parser/diagnostics.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/compiler/rustc_parse/src/parser/diagnostics.rs b/compiler/rustc_parse/src/parser/diagnostics.rs index 2a8eb6edd23..8803b243aa8 100644 --- a/compiler/rustc_parse/src/parser/diagnostics.rs +++ b/compiler/rustc_parse/src/parser/diagnostics.rs @@ -610,6 +610,26 @@ impl<'a> Parser<'a> { // FIXME: translation requires list formatting (for `expect`) let mut err = self.struct_span_err(self.token.span, msg_exp); + // Look for usages of '=>' where '>=' was probably intended + if self.token == token::FatArrow + && expected + .iter() + .any(|tok| matches!(tok, TokenType::Operator | TokenType::Token(TokenKind::Le))) + && !expected.iter().any(|tok| { + matches!( + tok, + TokenType::Token(TokenKind::FatArrow) | TokenType::Token(TokenKind::Comma) + ) + }) + { + err.span_suggestion( + self.token.span, + "you might have meant to write a \"greater than or equal to\" comparison", + ">=", + Applicability::MaybeIncorrect, + ); + } + if let TokenKind::Ident(symbol, _) = &self.prev_token.kind { if ["def", "fun", "func", "function"].contains(&symbol.as_str()) { err.span_suggestion_short( |