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Rollup merge of #73336 - lzutao:pattern-group, r=sfackler

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Group `Pattern::strip_*` method together
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Ralf Jung 2020-06-15 09:57:30 +02:00 committed by GitHub
commit ec0cb57403
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1 changed files with 10 additions and 10 deletions
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20
src/libcore/str/pattern.rs
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@ -69,7 +69,7 @@
/// |--------------------------|-------------------------------------------|
/// | `&str` | is substring |
/// | `char` | is contained in string |
/// | `&[char] | any char in slice is contained in string |
/// | `&[char]` | any char in slice is contained in string |
/// | `F: FnMut(char) -> bool` | `F` returns `true` for a char in string |
/// | `&&str` | is substring |
/// | `&String` | is substring |
@ -117,6 +117,15 @@ fn is_prefix_of(self, haystack: &'a str) -> bool {
matches!(self.into_searcher(haystack).next(), SearchStep::Match(0, _))
}
/// Checks whether the pattern matches at the back of the haystack
#[inline]
fn is_suffix_of(self, haystack: &'a str) -> bool
where
Self::Searcher: ReverseSearcher<'a>,
{
matches!(self.into_searcher(haystack).next_back(), SearchStep::Match(_, j) if haystack.len() == j)
}
/// Removes the pattern from the front of haystack, if it matches.
#[inline]
fn strip_prefix_of(self, haystack: &'a str) -> Option<&'a str> {
@ -133,15 +142,6 @@ fn strip_prefix_of(self, haystack: &'a str) -> Option<&'a str> {
}
}
/// Checks whether the pattern matches at the back of the haystack
#[inline]
fn is_suffix_of(self, haystack: &'a str) -> bool
where
Self::Searcher: ReverseSearcher<'a>,
{
matches!(self.into_searcher(haystack).next_back(), SearchStep::Match(_, j) if haystack.len() == j)
}
/// Removes the pattern from the back of haystack, if it matches.
#[inline]
fn strip_suffix_of(self, haystack: &'a str) -> Option<&'a str>