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Diffstat (limited to 'vendor/rayon/src/iter/inspect.rs')
-rw-r--r-- | vendor/rayon/src/iter/inspect.rs | 257 |
1 files changed, 0 insertions, 257 deletions
diff --git a/vendor/rayon/src/iter/inspect.rs b/vendor/rayon/src/iter/inspect.rs deleted file mode 100644 index c50ca02..0000000 --- a/vendor/rayon/src/iter/inspect.rs +++ /dev/null @@ -1,257 +0,0 @@ -use super::plumbing::*; -use super::*; - -use std::fmt::{self, Debug}; -use std::iter; - -/// `Inspect` is an iterator that calls a function with a reference to each -/// element before yielding it. -/// -/// This struct is created by the [`inspect()`] method on [`ParallelIterator`] -/// -/// [`inspect()`]: trait.ParallelIterator.html#method.inspect -/// [`ParallelIterator`]: trait.ParallelIterator.html -#[must_use = "iterator adaptors are lazy and do nothing unless consumed"] -#[derive(Clone)] -pub struct Inspect<I: ParallelIterator, F> { - base: I, - inspect_op: F, -} - -impl<I: ParallelIterator + Debug, F> Debug for Inspect<I, F> { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - f.debug_struct("Inspect").field("base", &self.base).finish() - } -} - -impl<I, F> Inspect<I, F> -where - I: ParallelIterator, -{ - /// Creates a new `Inspect` iterator. - pub(super) fn new(base: I, inspect_op: F) -> Self { - Inspect { base, inspect_op } - } -} - -impl<I, F> ParallelIterator for Inspect<I, F> -where - I: ParallelIterator, - F: Fn(&I::Item) + Sync + Send, -{ - type Item = I::Item; - - fn drive_unindexed<C>(self, consumer: C) -> C::Result - where - C: UnindexedConsumer<Self::Item>, - { - let consumer1 = InspectConsumer::new(consumer, &self.inspect_op); - self.base.drive_unindexed(consumer1) - } - - fn opt_len(&self) -> Option<usize> { - self.base.opt_len() - } -} - -impl<I, F> IndexedParallelIterator for Inspect<I, F> -where - I: IndexedParallelIterator, - F: Fn(&I::Item) + Sync + Send, -{ - fn drive<C>(self, consumer: C) -> C::Result - where - C: Consumer<Self::Item>, - { - let consumer1 = InspectConsumer::new(consumer, &self.inspect_op); - self.base.drive(consumer1) - } - - fn len(&self) -> usize { - self.base.len() - } - - fn with_producer<CB>(self, callback: CB) -> CB::Output - where - CB: ProducerCallback<Self::Item>, - { - return self.base.with_producer(Callback { - callback, - inspect_op: self.inspect_op, - }); - - struct Callback<CB, F> { - callback: CB, - inspect_op: F, - } - - impl<T, F, CB> ProducerCallback<T> for Callback<CB, F> - where - CB: ProducerCallback<T>, - F: Fn(&T) + Sync, - { - type Output = CB::Output; - - fn callback<P>(self, base: P) -> CB::Output - where - P: Producer<Item = T>, - { - let producer = InspectProducer { - base, - inspect_op: &self.inspect_op, - }; - self.callback.callback(producer) - } - } - } -} - -/// //////////////////////////////////////////////////////////////////////// - -struct InspectProducer<'f, P, F> { - base: P, - inspect_op: &'f F, -} - -impl<'f, P, F> Producer for InspectProducer<'f, P, F> -where - P: Producer, - F: Fn(&P::Item) + Sync, -{ - type Item = P::Item; - type IntoIter = iter::Inspect<P::IntoIter, &'f F>; - - fn into_iter(self) -> Self::IntoIter { - self.base.into_iter().inspect(self.inspect_op) - } - - fn min_len(&self) -> usize { - self.base.min_len() - } - - fn max_len(&self) -> usize { - self.base.max_len() - } - - fn split_at(self, index: usize) -> (Self, Self) { - let (left, right) = self.base.split_at(index); - ( - InspectProducer { - base: left, - inspect_op: self.inspect_op, - }, - InspectProducer { - base: right, - inspect_op: self.inspect_op, - }, - ) - } - - fn fold_with<G>(self, folder: G) -> G - where - G: Folder<Self::Item>, - { - let folder1 = InspectFolder { - base: folder, - inspect_op: self.inspect_op, - }; - self.base.fold_with(folder1).base - } -} - -/// //////////////////////////////////////////////////////////////////////// -/// Consumer implementation - -struct InspectConsumer<'f, C, F> { - base: C, - inspect_op: &'f F, -} - -impl<'f, C, F> InspectConsumer<'f, C, F> { - fn new(base: C, inspect_op: &'f F) -> Self { - InspectConsumer { base, inspect_op } - } -} - -impl<'f, T, C, F> Consumer<T> for InspectConsumer<'f, C, F> -where - C: Consumer<T>, - F: Fn(&T) + Sync, -{ - type Folder = InspectFolder<'f, C::Folder, F>; - type Reducer = C::Reducer; - type Result = C::Result; - - fn split_at(self, index: usize) -> (Self, Self, Self::Reducer) { - let (left, right, reducer) = self.base.split_at(index); - ( - InspectConsumer::new(left, self.inspect_op), - InspectConsumer::new(right, self.inspect_op), - reducer, - ) - } - - fn into_folder(self) -> Self::Folder { - InspectFolder { - base: self.base.into_folder(), - inspect_op: self.inspect_op, - } - } - - fn full(&self) -> bool { - self.base.full() - } -} - -impl<'f, T, C, F> UnindexedConsumer<T> for InspectConsumer<'f, C, F> -where - C: UnindexedConsumer<T>, - F: Fn(&T) + Sync, -{ - fn split_off_left(&self) -> Self { - InspectConsumer::new(self.base.split_off_left(), self.inspect_op) - } - - fn to_reducer(&self) -> Self::Reducer { - self.base.to_reducer() - } -} - -struct InspectFolder<'f, C, F> { - base: C, - inspect_op: &'f F, -} - -impl<'f, T, C, F> Folder<T> for InspectFolder<'f, C, F> -where - C: Folder<T>, - F: Fn(&T), -{ - type Result = C::Result; - - fn consume(self, item: T) -> Self { - (self.inspect_op)(&item); - InspectFolder { - base: self.base.consume(item), - inspect_op: self.inspect_op, - } - } - - fn consume_iter<I>(mut self, iter: I) -> Self - where - I: IntoIterator<Item = T>, - { - self.base = self - .base - .consume_iter(iter.into_iter().inspect(self.inspect_op)); - self - } - - fn complete(self) -> C::Result { - self.base.complete() - } - - fn full(&self) -> bool { - self.base.full() - } -} |