lo.line != hi.line
}
- pub fn span_to_lines(&self, sp: Span) -> FileLinesResult {
- debug!("span_to_lines(sp={:?})", sp);
-
+ pub fn is_valid_span(&self, sp: Span) -> Result<(Loc, Loc), SpanLinesError> {
let lo = self.lookup_char_pos(sp.lo());
debug!("span_to_lines: lo={:?}", lo);
let hi = self.lookup_char_pos(sp.hi());
debug!("span_to_lines: hi={:?}", hi);
-
if lo.file.start_pos != hi.file.start_pos {
return Err(SpanLinesError::DistinctSources(DistinctSources {
begin: (lo.file.name.clone(), lo.file.start_pos),
end: (hi.file.name.clone(), hi.file.start_pos),
}));
}
+ Ok((lo, hi))
+ }
+
+ pub fn span_to_lines(&self, sp: Span) -> FileLinesResult {
+ debug!("span_to_lines(sp={:?})", sp);
+ let (lo, hi) = self.is_valid_span(sp)?;
assert!(hi.line >= lo.line);
let mut lines = Vec::with_capacity(hi.line - lo.line + 1);