Initial import of rayon-1.5.0.

Bug: 155309706
Change-Id: I6ff7de1cb89d093d7938abf78d586ed76da85b0d

1 files changed, 59 insertions, 0 deletions

diff --git a/src/iter/noop.rs b/src/iter/noop.rs
new file mode 100644
index 0000000..1e55ecb
--- /dev/null
+++ b/src/iter/noop.rs
@@ -0,0 +1,59 @@
+use super::plumbing::*;
+
+pub(super) struct NoopConsumer;
+
+impl<T> Consumer<T> for NoopConsumer {
+    type Folder = NoopConsumer;
+    type Reducer = NoopReducer;
+    type Result = ();
+
+    fn split_at(self, _index: usize) -> (Self, Self, NoopReducer) {
+        (NoopConsumer, NoopConsumer, NoopReducer)
+    }
+
+    fn into_folder(self) -> Self {
+        self
+    }
+
+    fn full(&self) -> bool {
+        false
+    }
+}
+
+impl<T> Folder<T> for NoopConsumer {
+    type Result = ();
+
+    fn consume(self, _item: T) -> Self {
+        self
+    }
+
+    fn consume_iter<I>(self, iter: I) -> Self
+    where
+        I: IntoIterator<Item = T>,
+    {
+        iter.into_iter().for_each(drop);
+        self
+    }
+
+    fn complete(self) {}
+
+    fn full(&self) -> bool {
+        false
+    }
+}
+
+impl<T> UnindexedConsumer<T> for NoopConsumer {
+    fn split_off_left(&self) -> Self {
+        NoopConsumer
+    }
+
+    fn to_reducer(&self) -> NoopReducer {
+        NoopReducer
+    }
+}
+
+pub(super) struct NoopReducer;
+
+impl Reducer<()> for NoopReducer {
+    fn reduce(self, _left: (), _right: ()) {}
+}