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Diffstat (limited to 'vendor/rayon/src/iter/flatten_iter.rs')
-rw-r--r-- | vendor/rayon/src/iter/flatten_iter.rs | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/vendor/rayon/src/iter/flatten_iter.rs b/vendor/rayon/src/iter/flatten_iter.rs deleted file mode 100644 index 3ce0a3c..0000000 --- a/vendor/rayon/src/iter/flatten_iter.rs +++ /dev/null @@ -1,132 +0,0 @@ -use super::plumbing::*; -use super::*; - -/// `FlattenIter` turns each element to a serial iterator, then flattens these iterators -/// together. This struct is created by the [`flatten_iter()`] method on [`ParallelIterator`]. -/// -/// [`flatten_iter()`]: trait.ParallelIterator.html#method.flatten_iter -/// [`ParallelIterator`]: trait.ParallelIterator.html -#[must_use = "iterator adaptors are lazy and do nothing unless consumed"] -#[derive(Debug, Clone)] -pub struct FlattenIter<I: ParallelIterator> { - base: I, -} - -impl<I> FlattenIter<I> -where - I: ParallelIterator, - I::Item: IntoIterator, - <I::Item as IntoIterator>::Item: Send, -{ - /// Creates a new `FlattenIter` iterator. - pub(super) fn new(base: I) -> Self { - FlattenIter { base } - } -} - -impl<I> ParallelIterator for FlattenIter<I> -where - I: ParallelIterator, - I::Item: IntoIterator, - <I::Item as IntoIterator>::Item: Send, -{ - type Item = <I::Item as IntoIterator>::Item; - - fn drive_unindexed<C>(self, consumer: C) -> C::Result - where - C: UnindexedConsumer<Self::Item>, - { - let consumer = FlattenIterConsumer::new(consumer); - self.base.drive_unindexed(consumer) - } -} - -/// //////////////////////////////////////////////////////////////////////// -/// Consumer implementation - -struct FlattenIterConsumer<C> { - base: C, -} - -impl<C> FlattenIterConsumer<C> { - fn new(base: C) -> Self { - FlattenIterConsumer { base } - } -} - -impl<T, C> Consumer<T> for FlattenIterConsumer<C> -where - C: UnindexedConsumer<T::Item>, - T: IntoIterator, -{ - type Folder = FlattenIterFolder<C::Folder>; - type Reducer = C::Reducer; - type Result = C::Result; - - fn split_at(self, index: usize) -> (Self, Self, C::Reducer) { - let (left, right, reducer) = self.base.split_at(index); - ( - FlattenIterConsumer::new(left), - FlattenIterConsumer::new(right), - reducer, - ) - } - - fn into_folder(self) -> Self::Folder { - FlattenIterFolder { - base: self.base.into_folder(), - } - } - - fn full(&self) -> bool { - self.base.full() - } -} - -impl<T, C> UnindexedConsumer<T> for FlattenIterConsumer<C> -where - C: UnindexedConsumer<T::Item>, - T: IntoIterator, -{ - fn split_off_left(&self) -> Self { - FlattenIterConsumer::new(self.base.split_off_left()) - } - - fn to_reducer(&self) -> Self::Reducer { - self.base.to_reducer() - } -} - -struct FlattenIterFolder<C> { - base: C, -} - -impl<T, C> Folder<T> for FlattenIterFolder<C> -where - C: Folder<T::Item>, - T: IntoIterator, -{ - type Result = C::Result; - - fn consume(self, item: T) -> Self { - let base = self.base.consume_iter(item); - FlattenIterFolder { base } - } - - fn consume_iter<I>(self, iter: I) -> Self - where - I: IntoIterator<Item = T>, - { - let iter = iter.into_iter().flatten(); - let base = self.base.consume_iter(iter); - FlattenIterFolder { base } - } - - fn complete(self) -> Self::Result { - self.base.complete() - } - - fn full(&self) -> bool { - self.base.full() - } -} |