diff options
Diffstat (limited to 'src/libsyntax_pos')
| -rw-r--r-- | src/libsyntax_pos/lib.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/libsyntax_pos/lib.rs b/src/libsyntax_pos/lib.rs index 0f171805bb0..b11bbea84ab 100644 --- a/src/libsyntax_pos/lib.rs +++ b/src/libsyntax_pos/lib.rs @@ -221,6 +221,25 @@ impl MultiSpan { &self.primary_spans } + /// Replaces all occurances of one Span with another. Used to move Spans in areas that don't + /// display well (like std macros). Returns true if replacements occurred. + pub fn replace(&mut self, before: Span, after: Span) -> bool { + let mut replacements_occurred = false; + for primary_span in &mut self.primary_spans { + if *primary_span == before { + *primary_span = after; + replacements_occurred = true; + } + } + for span_label in &mut self.span_labels { + if span_label.0 == before { + span_label.0 = after; + replacements_occurred = true; + } + } + replacements_occurred + } + /// Returns the strings to highlight. We always ensure that there /// is an entry for each of the primary spans -- for each primary /// span P, if there is at least one label with span P, we return |