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-rw-r--r--vendor/rayon/src/slice/chunks.rs389
1 files changed, 0 insertions, 389 deletions
diff --git a/vendor/rayon/src/slice/chunks.rs b/vendor/rayon/src/slice/chunks.rs
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--- a/vendor/rayon/src/slice/chunks.rs
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-use crate::iter::plumbing::*;
-use crate::iter::*;
-use crate::math::div_round_up;
-use std::cmp;
-
-/// Parallel iterator over immutable non-overlapping chunks of a slice
-#[derive(Debug)]
-pub struct Chunks<'data, T: Sync> {
- chunk_size: usize,
- slice: &'data [T],
-}
-
-impl<'data, T: Sync> Chunks<'data, T> {
- pub(super) fn new(chunk_size: usize, slice: &'data [T]) -> Self {
- Self { chunk_size, slice }
- }
-}
-
-impl<'data, T: Sync> Clone for Chunks<'data, T> {
- fn clone(&self) -> Self {
- Chunks { ..*self }
- }
-}
-
-impl<'data, T: Sync + 'data> ParallelIterator for Chunks<'data, T> {
- type Item = &'data [T];
-
- 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<'data, T: Sync + 'data> IndexedParallelIterator for Chunks<'data, T> {
- fn drive<C>(self, consumer: C) -> C::Result
- where
- C: Consumer<Self::Item>,
- {
- bridge(self, consumer)
- }
-
- fn len(&self) -> usize {
- div_round_up(self.slice.len(), self.chunk_size)
- }
-
- fn with_producer<CB>(self, callback: CB) -> CB::Output
- where
- CB: ProducerCallback<Self::Item>,
- {
- callback.callback(ChunksProducer {
- chunk_size: self.chunk_size,
- slice: self.slice,
- })
- }
-}
-
-struct ChunksProducer<'data, T: Sync> {
- chunk_size: usize,
- slice: &'data [T],
-}
-
-impl<'data, T: 'data + Sync> Producer for ChunksProducer<'data, T> {
- type Item = &'data [T];
- type IntoIter = ::std::slice::Chunks<'data, T>;
-
- fn into_iter(self) -> Self::IntoIter {
- self.slice.chunks(self.chunk_size)
- }
-
- fn split_at(self, index: usize) -> (Self, Self) {
- let elem_index = cmp::min(index * self.chunk_size, self.slice.len());
- let (left, right) = self.slice.split_at(elem_index);
- (
- ChunksProducer {
- chunk_size: self.chunk_size,
- slice: left,
- },
- ChunksProducer {
- chunk_size: self.chunk_size,
- slice: right,
- },
- )
- }
-}
-
-/// Parallel iterator over immutable non-overlapping chunks of a slice
-#[derive(Debug)]
-pub struct ChunksExact<'data, T: Sync> {
- chunk_size: usize,
- slice: &'data [T],
- rem: &'data [T],
-}
-
-impl<'data, T: Sync> ChunksExact<'data, T> {
- pub(super) fn new(chunk_size: usize, slice: &'data [T]) -> Self {
- let rem_len = slice.len() % chunk_size;
- let len = slice.len() - rem_len;
- let (slice, rem) = slice.split_at(len);
- Self {
- chunk_size,
- slice,
- rem,
- }
- }
-
- /// Return the remainder of the original slice that is not going to be
- /// returned by the iterator. The returned slice has at most `chunk_size-1`
- /// elements.
- pub fn remainder(&self) -> &'data [T] {
- self.rem
- }
-}
-
-impl<'data, T: Sync> Clone for ChunksExact<'data, T> {
- fn clone(&self) -> Self {
- ChunksExact { ..*self }
- }
-}
-
-impl<'data, T: Sync + 'data> ParallelIterator for ChunksExact<'data, T> {
- type Item = &'data [T];
-
- 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<'data, T: Sync + 'data> IndexedParallelIterator for ChunksExact<'data, T> {
- fn drive<C>(self, consumer: C) -> C::Result
- where
- C: Consumer<Self::Item>,
- {
- bridge(self, consumer)
- }
-
- fn len(&self) -> usize {
- self.slice.len() / self.chunk_size
- }
-
- fn with_producer<CB>(self, callback: CB) -> CB::Output
- where
- CB: ProducerCallback<Self::Item>,
- {
- callback.callback(ChunksExactProducer {
- chunk_size: self.chunk_size,
- slice: self.slice,
- })
- }
-}
-
-struct ChunksExactProducer<'data, T: Sync> {
- chunk_size: usize,
- slice: &'data [T],
-}
-
-impl<'data, T: 'data + Sync> Producer for ChunksExactProducer<'data, T> {
- type Item = &'data [T];
- type IntoIter = ::std::slice::ChunksExact<'data, T>;
-
- fn into_iter(self) -> Self::IntoIter {
- self.slice.chunks_exact(self.chunk_size)
- }
-
- fn split_at(self, index: usize) -> (Self, Self) {
- let elem_index = index * self.chunk_size;
- let (left, right) = self.slice.split_at(elem_index);
- (
- ChunksExactProducer {
- chunk_size: self.chunk_size,
- slice: left,
- },
- ChunksExactProducer {
- chunk_size: self.chunk_size,
- slice: right,
- },
- )
- }
-}
-
-/// Parallel iterator over mutable non-overlapping chunks of a slice
-#[derive(Debug)]
-pub struct ChunksMut<'data, T: Send> {
- chunk_size: usize,
- slice: &'data mut [T],
-}
-
-impl<'data, T: Send> ChunksMut<'data, T> {
- pub(super) fn new(chunk_size: usize, slice: &'data mut [T]) -> Self {
- Self { chunk_size, slice }
- }
-}
-
-impl<'data, T: Send + 'data> ParallelIterator for ChunksMut<'data, T> {
- type Item = &'data mut [T];
-
- 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<'data, T: Send + 'data> IndexedParallelIterator for ChunksMut<'data, T> {
- fn drive<C>(self, consumer: C) -> C::Result
- where
- C: Consumer<Self::Item>,
- {
- bridge(self, consumer)
- }
-
- fn len(&self) -> usize {
- div_round_up(self.slice.len(), self.chunk_size)
- }
-
- fn with_producer<CB>(self, callback: CB) -> CB::Output
- where
- CB: ProducerCallback<Self::Item>,
- {
- callback.callback(ChunksMutProducer {
- chunk_size: self.chunk_size,
- slice: self.slice,
- })
- }
-}
-
-struct ChunksMutProducer<'data, T: Send> {
- chunk_size: usize,
- slice: &'data mut [T],
-}
-
-impl<'data, T: 'data + Send> Producer for ChunksMutProducer<'data, T> {
- type Item = &'data mut [T];
- type IntoIter = ::std::slice::ChunksMut<'data, T>;
-
- fn into_iter(self) -> Self::IntoIter {
- self.slice.chunks_mut(self.chunk_size)
- }
-
- fn split_at(self, index: usize) -> (Self, Self) {
- let elem_index = cmp::min(index * self.chunk_size, self.slice.len());
- let (left, right) = self.slice.split_at_mut(elem_index);
- (
- ChunksMutProducer {
- chunk_size: self.chunk_size,
- slice: left,
- },
- ChunksMutProducer {
- chunk_size: self.chunk_size,
- slice: right,
- },
- )
- }
-}
-
-/// Parallel iterator over mutable non-overlapping chunks of a slice
-#[derive(Debug)]
-pub struct ChunksExactMut<'data, T: Send> {
- chunk_size: usize,
- slice: &'data mut [T],
- rem: &'data mut [T],
-}
-
-impl<'data, T: Send> ChunksExactMut<'data, T> {
- pub(super) fn new(chunk_size: usize, slice: &'data mut [T]) -> Self {
- let rem_len = slice.len() % chunk_size;
- let len = slice.len() - rem_len;
- let (slice, rem) = slice.split_at_mut(len);
- Self {
- chunk_size,
- slice,
- rem,
- }
- }
-
- /// Return the remainder of the original slice that is not going to be
- /// returned by the iterator. The returned slice has at most `chunk_size-1`
- /// elements.
- ///
- /// Note that this has to consume `self` to return the original lifetime of
- /// the data, which prevents this from actually being used as a parallel
- /// iterator since that also consumes. This method is provided for parity
- /// with `std::iter::ChunksExactMut`, but consider calling `remainder()` or
- /// `take_remainder()` as alternatives.
- pub fn into_remainder(self) -> &'data mut [T] {
- self.rem
- }
-
- /// Return the remainder of the original slice that is not going to be
- /// returned by the iterator. The returned slice has at most `chunk_size-1`
- /// elements.
- ///
- /// Consider `take_remainder()` if you need access to the data with its
- /// original lifetime, rather than borrowing through `&mut self` here.
- pub fn remainder(&mut self) -> &mut [T] {
- self.rem
- }
-
- /// Return the remainder of the original slice that is not going to be
- /// returned by the iterator. The returned slice has at most `chunk_size-1`
- /// elements. Subsequent calls will return an empty slice.
- pub fn take_remainder(&mut self) -> &'data mut [T] {
- std::mem::take(&mut self.rem)
- }
-}
-
-impl<'data, T: Send + 'data> ParallelIterator for ChunksExactMut<'data, T> {
- type Item = &'data mut [T];
-
- 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<'data, T: Send + 'data> IndexedParallelIterator for ChunksExactMut<'data, T> {
- fn drive<C>(self, consumer: C) -> C::Result
- where
- C: Consumer<Self::Item>,
- {
- bridge(self, consumer)
- }
-
- fn len(&self) -> usize {
- self.slice.len() / self.chunk_size
- }
-
- fn with_producer<CB>(self, callback: CB) -> CB::Output
- where
- CB: ProducerCallback<Self::Item>,
- {
- callback.callback(ChunksExactMutProducer {
- chunk_size: self.chunk_size,
- slice: self.slice,
- })
- }
-}
-
-struct ChunksExactMutProducer<'data, T: Send> {
- chunk_size: usize,
- slice: &'data mut [T],
-}
-
-impl<'data, T: 'data + Send> Producer for ChunksExactMutProducer<'data, T> {
- type Item = &'data mut [T];
- type IntoIter = ::std::slice::ChunksExactMut<'data, T>;
-
- fn into_iter(self) -> Self::IntoIter {
- self.slice.chunks_exact_mut(self.chunk_size)
- }
-
- fn split_at(self, index: usize) -> (Self, Self) {
- let elem_index = index * self.chunk_size;
- let (left, right) = self.slice.split_at_mut(elem_index);
- (
- ChunksExactMutProducer {
- chunk_size: self.chunk_size,
- slice: left,
- },
- ChunksExactMutProducer {
- chunk_size: self.chunk_size,
- slice: right,
- },
- )
- }
-}