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compress the function, remove the assert check.

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This commit is contained in:
Guanqun Lu 2019-10-12 22:47:17 +08:00
parent e0395341f7
commit 63cb2fa197
1 changed files with 2 additions and 11 deletions
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13
src/libsyntax/source_map.rs
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@ -878,17 +878,8 @@ impl SourceMap {
// Returns the index of the `SourceFile` (in `self.files`) that contains `pos`.
pub fn lookup_source_file_idx(&self, pos: BytePos) -> usize {
let files = self.files.borrow();
let files = &files.source_files;
let count = files.len();
// (p - 1) below will not underflow, this follows previous implementation's assumption.
assert!(count >= 1);
let ret = files.binary_search_by_key(&pos, |key| key.start_pos).unwrap_or_else(|p| p - 1);
assert!(ret < count, "position {} does not resolve to a source location", pos.to_usize());
return ret;
self.files.borrow().source_files.binary_search_by_key(&pos, |key| key.start_pos)
.unwrap_or_else(|p| p - 1)
}
pub fn count_lines(&self) -> usize {