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Add IntoIter on Ranges #276

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merged 2 commits into from
Nov 12, 2024
Merged

Add IntoIter on Ranges #276

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38d11ae
Add `IntoIter` on `Ranges`
konstin Nov 8, 2024
d70a7d8
impl ExactSizeIterator and DoubleEndedIterator on ranges
konstin Nov 10, 2024
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33 changes: 33 additions & 0 deletions version-ranges/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -846,6 +846,39 @@ impl<V: Ord + Clone> Ranges<V> {
}
}

// Newtype to avoid leaking our internal representation.
pub struct RangesIter<V>(smallvec::IntoIter<[Interval<V>; 1]>);

impl<V> Iterator for RangesIter<V> {
type Item = Interval<V>;

fn next(&mut self) -> Option<Self::Item> {
self.0.next()
}

fn size_hint(&self) -> (usize, Option<usize>) {
(self.0.len(), Some(self.0.len()))
}
}

impl<V> ExactSizeIterator for RangesIter<V> {}

impl<V> DoubleEndedIterator for RangesIter<V> {
fn next_back(&mut self) -> Option<Self::Item> {
self.0.next_back()
}
}

impl<V> IntoIterator for Ranges<V> {
type Item = (Bound<V>, Bound<V>);
// Newtype to avoid leaking our internal representation.
type IntoIter = RangesIter<V>;

fn into_iter(self) -> Self::IntoIter {
RangesIter(self.segments.into_iter())
}
}

// REPORT ######################################################################

impl<V: Display + Eq> Display for Ranges<V> {
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