diff options
Diffstat (limited to 'compiler/rustc_parse/src/parser/expr.rs')
| -rw-r--r-- | compiler/rustc_parse/src/parser/expr.rs | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs index ed37ede65d5..1fdd312572a 100644 --- a/compiler/rustc_parse/src/parser/expr.rs +++ b/compiler/rustc_parse/src/parser/expr.rs @@ -660,9 +660,18 @@ impl<'a> Parser<'a> { fn recover_not_expr(&mut self, lo: Span) -> PResult<'a, (Span, ExprKind)> { // Emit the error... let negated_token = self.look_ahead(1, |t| t.clone()); + let negtated_msg = if negated_token.is_numeric_lit() { + "bitwise not" + } else if negated_token.is_bool_lit() { + "logical negation" + } else { + "logical negation or bitwise not" + }; + self.sess.emit_err(NotAsNegationOperator { negated: negated_token.span, negated_desc: super::token_descr(&negated_token), + negated_msg: negtated_msg.to_string(), // Span the `not` plus trailing whitespace to avoid // trailing whitespace after the `!` in our suggestion not: self.sess.source_map().span_until_non_whitespace(lo.to(negated_token.span)), |