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rustdoc: Reduce allocations in a theme function

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Roc Yu 2022-04-10 19:17:38 -04:00
parent 027a232755
commit 7feb7383d2
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1 changed files with 9 additions and 7 deletions
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16
src/librustdoc/theme.rs
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@ -173,15 +173,17 @@ fn build_rule(v: &[u8], positions: &[usize]) -> String {
.map(|x| ::std::str::from_utf8(&v[x[0]..x[1]]).unwrap_or("")) .map(|x| ::std::str::from_utf8(&v[x[0]..x[1]]).unwrap_or(""))
.collect::<String>() .collect::<String>()
.trim() .trim()
.replace('\n', " ") .chars()
.replace('/', "") .filter_map(|c| match c {
.replace('\t', " ") '\n' | '\t' => Some(' '),
.replace('{', "") '/' | '{' | '}' => None,
.replace('}', "") c => Some(c),
})
.collect::<String>()
.split(' ') .split(' ')
.filter(|s| !s.is_empty()) .filter(|s| !s.is_empty())
.collect::<Vec<&str>>() .intersperse(" ")
.join(" "), .collect::<String>(),
) )
.unwrap_or_else(|_| String::new()) .unwrap_or_else(|_| String::new())
} }