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add `str::{SplitN, RSplitN, SplitTerminator, RSplitTerminator}::as_str` methods 

This commit entroduce 4 methods smililar to `Split::as_str` all under the same
gate "str_split_as_str".
This commit is contained in:
Waffle 2020-10-01 23:08:15 +03:00
parent 0b923d3ca0
commit 4747215d77
1 changed files with 89 additions and 0 deletions
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89
library/core/src/str/iter.rs
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@ -783,6 +783,48 @@ generate_pattern_iterators! {
delegate double ended;
}
impl<'a, P: Pattern<'a>> SplitTerminator<'a, P> {
/// Returns remainder of the splitted string
///
/// # Examples
///
/// ```
/// #![feature(str_split_as_str)]
/// let mut split = "A..B..".split_terminator('.');
/// assert_eq!(split.as_str(), "A..B..");
/// split.next();
/// assert_eq!(split.as_str(), ".B..");
/// split.by_ref().for_each(drop);
/// assert_eq!(split.as_str(), "");
/// ```
#[inline]
#[unstable(feature = "str_split_as_str", issue = "none")]
pub fn as_str(&self) -> &'a str {
self.0.as_str()
}
}
impl<'a, P: Pattern<'a>> RSplitTerminator<'a, P> {
/// Returns remainder of the splitted string
///
/// # Examples
///
/// ```
/// #![feature(str_split_as_str)]
/// let mut split = "A..B..".rsplit_terminator('.');
/// assert_eq!(split.as_str(), "A..B..");
/// split.next();
/// assert_eq!(split.as_str(), "A..B");
/// split.by_ref().for_each(drop);
/// assert_eq!(split.as_str(), "");
/// ```
#[inline]
#[unstable(feature = "str_split_as_str", issue = "none")]
pub fn as_str(&self) -> &'a str {
self.0.as_str()
}
}
derive_pattern_clone! {
clone SplitNInternal
with |s| SplitNInternal { iter: s.iter.clone(), ..*s }
@ -839,6 +881,11 @@ impl<'a, P: Pattern<'a>> SplitNInternal<'a, P> {
}
}
}
#[inline]
fn as_str(&self) -> &'a str {
self.iter.as_str()
}
}
generate_pattern_iterators! {
@ -859,6 +906,48 @@ generate_pattern_iterators! {
delegate single ended;
}
impl<'a, P: Pattern<'a>> SplitN<'a, P> {
/// Returns remainder of the splitted string
///
/// # Examples
///
/// ```
/// #![feature(str_split_as_str)]
/// let mut split = "Mary had a little lamb".splitn(3, ' ');
/// assert_eq!(split.as_str(), "Mary had a little lamb");
/// split.next();
/// assert_eq!(split.as_str(), "had a little lamb");
/// split.by_ref().for_each(drop);
/// assert_eq!(split.as_str(), "");
/// ```
#[inline]
#[unstable(feature = "str_split_as_str", issue = "none")]
pub fn as_str(&self) -> &'a str {
self.0.as_str()
}
}
impl<'a, P: Pattern<'a>> RSplitN<'a, P> {
/// Returns remainder of the splitted string
///
/// # Examples
///
/// ```
/// #![feature(str_split_as_str)]
/// let mut split = "Mary had a little lamb".rsplitn(3, ' ');
/// assert_eq!(split.as_str(), "Mary had a little lamb");
/// split.next();
/// assert_eq!(split.as_str(), "Mary had a little");
/// split.by_ref().for_each(drop);
/// assert_eq!(split.as_str(), "");
/// ```
#[inline]
#[unstable(feature = "str_split_as_str", issue = "none")]
pub fn as_str(&self) -> &'a str {
self.0.as_str()
}
}
derive_pattern_clone! {
clone MatchIndicesInternal
with |s| MatchIndicesInternal(s.0.clone())