diff options
Diffstat (limited to 'compiler/rustc_parse/src')
| -rw-r--r-- | compiler/rustc_parse/src/lexer/tokentrees.rs | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/compiler/rustc_parse/src/lexer/tokentrees.rs b/compiler/rustc_parse/src/lexer/tokentrees.rs index 8e543454691..fc6257d8090 100644 --- a/compiler/rustc_parse/src/lexer/tokentrees.rs +++ b/compiler/rustc_parse/src/lexer/tokentrees.rs @@ -72,16 +72,31 @@ impl<'psess, 'src> TokenTreesReader<'psess, 'src> { fn eof_err(&mut self) -> PErr<'psess> { let msg = "this file contains an unclosed delimiter"; let mut err = self.string_reader.dcx().struct_span_err(self.token.span, msg); - for &(_, sp) in &self.diag_info.open_braces { - err.span_label(sp, "unclosed delimiter"); + + let unclosed_delimiter_show_limit = 5; + let len = usize::min(unclosed_delimiter_show_limit, self.diag_info.open_braces.len()); + for &(_, span) in &self.diag_info.open_braces[..len] { + err.span_label(span, "unclosed delimiter"); self.diag_info.unmatched_delims.push(UnmatchedDelim { found_delim: None, found_span: self.token.span, - unclosed_span: Some(sp), + unclosed_span: Some(span), candidate_span: None, }); } + if let Some((_, span)) = self.diag_info.open_braces.get(unclosed_delimiter_show_limit) + && self.diag_info.open_braces.len() >= unclosed_delimiter_show_limit + 2 + { + err.span_label( + *span, + format!( + "another {} unclosed delimiters begin from here", + self.diag_info.open_braces.len() - unclosed_delimiter_show_limit + ), + ); + } + if let Some((delim, _)) = self.diag_info.open_braces.last() { report_suspicious_mismatch_block( &mut err, |