(token::CloseDelim(Delimiter::Parenthesis), Some(begin_par_sp)) => {
self.bump();
+ let sm = self.sess.source_map();
+ let left = begin_par_sp;
+ let right = self.prev_token.span;
+ let left_snippet = if let Ok(snip) = sm.span_to_prev_source(left) &&
+ !snip.ends_with(" ") {
+ " ".to_string()
+ } else {
+ "".to_string()
+ };
+
+ let right_snippet = if let Ok(snip) = sm.span_to_next_source(right) &&
+ !snip.starts_with(" ") {
+ " ".to_string()
+ } else {
+ "".to_string()
+ };
+
self.sess.emit_err(ParenthesesInForHead {
- span: vec![begin_par_sp, self.prev_token.span],
+ span: vec![left, right],
// With e.g. `for (x) in y)` this would replace `(x) in y)`
// with `x) in y)` which is syntactically invalid.
// However, this is prevented before we get here.
- sugg: ParenthesesInForHeadSugg {
- left: begin_par_sp,
- right: self.prev_token.span,
- },
+ sugg: ParenthesesInForHeadSugg { left, right, left_snippet, right_snippet },
});
// Unwrap `(pat)` into `pat` to avoid the `unused_parens` lint.