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Diffstat (limited to 'vendor/rayon/src/iter/zip.rs')
-rw-r--r-- | vendor/rayon/src/iter/zip.rs | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/vendor/rayon/src/iter/zip.rs b/vendor/rayon/src/iter/zip.rs deleted file mode 100644 index 33823db..0000000 --- a/vendor/rayon/src/iter/zip.rs +++ /dev/null @@ -1,159 +0,0 @@ -use super::plumbing::*; -use super::*; -use std::cmp; -use std::iter; - -/// `Zip` is an iterator that zips up `a` and `b` into a single iterator -/// of pairs. This struct is created by the [`zip()`] method on -/// [`IndexedParallelIterator`] -/// -/// [`zip()`]: trait.IndexedParallelIterator.html#method.zip -/// [`IndexedParallelIterator`]: trait.IndexedParallelIterator.html -#[must_use = "iterator adaptors are lazy and do nothing unless consumed"] -#[derive(Debug, Clone)] -pub struct Zip<A: IndexedParallelIterator, B: IndexedParallelIterator> { - a: A, - b: B, -} - -impl<A, B> Zip<A, B> -where - A: IndexedParallelIterator, - B: IndexedParallelIterator, -{ - /// Creates a new `Zip` iterator. - pub(super) fn new(a: A, b: B) -> Self { - Zip { a, b } - } -} - -impl<A, B> ParallelIterator for Zip<A, B> -where - A: IndexedParallelIterator, - B: IndexedParallelIterator, -{ - type Item = (A::Item, B::Item); - - fn drive_unindexed<C>(self, consumer: C) -> C::Result - where - C: UnindexedConsumer<Self::Item>, - { - bridge(self, consumer) - } - - fn opt_len(&self) -> Option<usize> { - Some(self.len()) - } -} - -impl<A, B> IndexedParallelIterator for Zip<A, B> -where - A: IndexedParallelIterator, - B: IndexedParallelIterator, -{ - fn drive<C>(self, consumer: C) -> C::Result - where - C: Consumer<Self::Item>, - { - bridge(self, consumer) - } - - fn len(&self) -> usize { - cmp::min(self.a.len(), self.b.len()) - } - - fn with_producer<CB>(self, callback: CB) -> CB::Output - where - CB: ProducerCallback<Self::Item>, - { - return self.a.with_producer(CallbackA { - callback, - b: self.b, - }); - - struct CallbackA<CB, B> { - callback: CB, - b: B, - } - - impl<CB, ITEM, B> ProducerCallback<ITEM> for CallbackA<CB, B> - where - B: IndexedParallelIterator, - CB: ProducerCallback<(ITEM, B::Item)>, - { - type Output = CB::Output; - - fn callback<A>(self, a_producer: A) -> Self::Output - where - A: Producer<Item = ITEM>, - { - self.b.with_producer(CallbackB { - a_producer, - callback: self.callback, - }) - } - } - - struct CallbackB<CB, A> { - a_producer: A, - callback: CB, - } - - impl<CB, A, ITEM> ProducerCallback<ITEM> for CallbackB<CB, A> - where - A: Producer, - CB: ProducerCallback<(A::Item, ITEM)>, - { - type Output = CB::Output; - - fn callback<B>(self, b_producer: B) -> Self::Output - where - B: Producer<Item = ITEM>, - { - self.callback.callback(ZipProducer { - a: self.a_producer, - b: b_producer, - }) - } - } - } -} - -/// //////////////////////////////////////////////////////////////////////// - -struct ZipProducer<A: Producer, B: Producer> { - a: A, - b: B, -} - -impl<A: Producer, B: Producer> Producer for ZipProducer<A, B> { - type Item = (A::Item, B::Item); - type IntoIter = iter::Zip<A::IntoIter, B::IntoIter>; - - fn into_iter(self) -> Self::IntoIter { - self.a.into_iter().zip(self.b.into_iter()) - } - - fn min_len(&self) -> usize { - cmp::max(self.a.min_len(), self.b.min_len()) - } - - fn max_len(&self) -> usize { - cmp::min(self.a.max_len(), self.b.max_len()) - } - - fn split_at(self, index: usize) -> (Self, Self) { - let (a_left, a_right) = self.a.split_at(index); - let (b_left, b_right) = self.b.split_at(index); - ( - ZipProducer { - a: a_left, - b: b_left, - }, - ZipProducer { - a: a_right, - b: b_right, - }, - ) - } -} |