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Update varinfo.rs

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This commit is contained in:
Shunsuke Shibayama 2023-02-13 21:32:21 +09:00
parent 515b87b106
commit ecd8ea6769
1 changed files with 10 additions and 1 deletions
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11
crates/erg_compiler/varinfo.rs
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@ -117,11 +117,20 @@ impl AbsLocation {
let reader = BufReader::new(file);
reader
.lines()
.nth(self.loc.ln_begin().map(|l| l - 1).unwrap_or(0) as usize)
.nth(
self.loc
.ln_begin()
.map(|l| l.saturating_sub(1))
.unwrap_or(0) as usize,
)
.and_then(|res| {
let res = res.ok()?;
let begin = self.loc.col_begin().unwrap_or(0) as usize;
let end = self.loc.col_end().unwrap_or(0) as usize;
if begin > end {
return None;
}
let end = end.min(res.len());
let res = res[begin..end].to_string();
Some(res)
})