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author | Valentin Popov <valentin@popov.link> | 2024-07-19 15:37:58 +0300 |
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committer | Valentin Popov <valentin@popov.link> | 2024-07-19 15:37:58 +0300 |
commit | a990de90fe41456a23e58bd087d2f107d321f3a1 (patch) | |
tree | 15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/rayon/src/iter/step_by.rs | |
parent | 3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff) | |
download | fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip |
Deleted vendor folder
Diffstat (limited to 'vendor/rayon/src/iter/step_by.rs')
-rw-r--r-- | vendor/rayon/src/iter/step_by.rs | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/vendor/rayon/src/iter/step_by.rs b/vendor/rayon/src/iter/step_by.rs deleted file mode 100644 index 94b8334..0000000 --- a/vendor/rayon/src/iter/step_by.rs +++ /dev/null @@ -1,143 +0,0 @@ -use std::cmp::min; - -use super::plumbing::*; -use super::*; -use crate::math::div_round_up; -use std::iter; -use std::usize; - -/// `StepBy` is an iterator that skips `n` elements between each yield, where `n` is the given step. -/// This struct is created by the [`step_by()`] method on [`IndexedParallelIterator`] -/// -/// [`step_by()`]: trait.IndexedParallelIterator.html#method.step_by -/// [`IndexedParallelIterator`]: trait.IndexedParallelIterator.html -#[must_use = "iterator adaptors are lazy and do nothing unless consumed"] -#[derive(Debug, Clone)] -pub struct StepBy<I: IndexedParallelIterator> { - base: I, - step: usize, -} - -impl<I> StepBy<I> -where - I: IndexedParallelIterator, -{ - /// Creates a new `StepBy` iterator. - pub(super) fn new(base: I, step: usize) -> Self { - StepBy { base, step } - } -} - -impl<I> ParallelIterator for StepBy<I> -where - I: IndexedParallelIterator, -{ - type Item = I::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<I> IndexedParallelIterator for StepBy<I> -where - I: IndexedParallelIterator, -{ - fn drive<C: Consumer<Self::Item>>(self, consumer: C) -> C::Result { - bridge(self, consumer) - } - - fn len(&self) -> usize { - div_round_up(self.base.len(), self.step) - } - - fn with_producer<CB>(self, callback: CB) -> CB::Output - where - CB: ProducerCallback<Self::Item>, - { - let len = self.base.len(); - return self.base.with_producer(Callback { - callback, - step: self.step, - len, - }); - - struct Callback<CB> { - callback: CB, - step: usize, - len: usize, - } - - impl<T, CB> ProducerCallback<T> for Callback<CB> - where - CB: ProducerCallback<T>, - { - type Output = CB::Output; - fn callback<P>(self, base: P) -> CB::Output - where - P: Producer<Item = T>, - { - let producer = StepByProducer { - base, - step: self.step, - len: self.len, - }; - self.callback.callback(producer) - } - } - } -} - -/// //////////////////////////////////////////////////////////////////////// -/// Producer implementation - -struct StepByProducer<P> { - base: P, - step: usize, - len: usize, -} - -impl<P> Producer for StepByProducer<P> -where - P: Producer, -{ - type Item = P::Item; - type IntoIter = iter::StepBy<P::IntoIter>; - - fn into_iter(self) -> Self::IntoIter { - self.base.into_iter().step_by(self.step) - } - - fn split_at(self, index: usize) -> (Self, Self) { - let elem_index = min(index * self.step, self.len); - - let (left, right) = self.base.split_at(elem_index); - ( - StepByProducer { - base: left, - step: self.step, - len: elem_index, - }, - StepByProducer { - base: right, - step: self.step, - len: self.len - elem_index, - }, - ) - } - - fn min_len(&self) -> usize { - div_round_up(self.base.min_len(), self.step) - } - - fn max_len(&self) -> usize { - self.base.max_len() / self.step - } -} |