Auto merge of #35856 - phimuemue:master, r=brson

[rust.git] / src / libcollections / btree / map.rs

diff --git a/src/libcollections/btree/map.rs b/src/libcollections/btree/map.rs
index a2e2ad37acb848e44fbd011379a8704891ae8550..79840df1677eaf0c4c55ab0347f8891bd803d091 100644 (file)
--- a/src/libcollections/btree/map.rs
+++ b/src/libcollections/btree/map.rs
@@ -11,7 +11,7 @@
 use core::cmp::Ordering;
 use core::fmt::Debug;
 use core::hash::{Hash, Hasher};
-use core::iter::{FromIterator, Peekable};
+use core::iter::{FromIterator, Peekable, FusedIterator};
 use core::marker::PhantomData;
 use core::ops::Index;
 use core::{fmt, intrinsics, mem, ptr};
@@ -1147,6 +1147,9 @@ fn size_hint(&self) -> (usize, Option<usize>) {
     }
 }
 
+#[unstable(feature = "fused", issue = "35602")]
+impl<'a, K, V> FusedIterator for Iter<'a, K, V> {}
+
 impl<'a, K: 'a, V: 'a> DoubleEndedIterator for Iter<'a, K, V> {
     fn next_back(&mut self) -> Option<(&'a K, &'a V)> {
         if self.length == 0 {
@@ -1216,6 +1219,9 @@ fn len(&self) -> usize {
     }
 }
 
+#[unstable(feature = "fused", issue = "35602")]
+impl<'a, K, V> FusedIterator for IterMut<'a, K, V> {}
+
 impl<K, V> IntoIterator for BTreeMap<K, V> {
     type Item = (K, V);
     type IntoIter = IntoIter<K, V>;
@@ -1338,6 +1344,9 @@ fn len(&self) -> usize {
     }
 }
 
+#[unstable(feature = "fused", issue = "35602")]
+impl<K, V> FusedIterator for IntoIter<K, V> {}
+
 impl<'a, K, V> Iterator for Keys<'a, K, V> {
     type Item = &'a K;
 
@@ -1362,6 +1371,9 @@ fn len(&self) -> usize {
     }
 }
 
+#[unstable(feature = "fused", issue = "35602")]
+impl<'a, K, V> FusedIterator for Keys<'a, K, V> {}
+
 impl<'a, K, V> Clone for Keys<'a, K, V> {
     fn clone(&self) -> Keys<'a, K, V> {
         Keys { inner: self.inner.clone() }
@@ -1392,6 +1404,9 @@ fn len(&self) -> usize {
     }
 }
 
+#[unstable(feature = "fused", issue = "35602")]
+impl<'a, K, V> FusedIterator for Values<'a, K, V> {}
+
 impl<'a, K, V> Clone for Values<'a, K, V> {
     fn clone(&self) -> Values<'a, K, V> {
         Values { inner: self.inner.clone() }
@@ -1437,6 +1452,10 @@ fn len(&self) -> usize {
     }
 }
 
+#[unstable(feature = "fused", issue = "35602")]
+impl<'a, K, V> FusedIterator for ValuesMut<'a, K, V> {}
+
+
 impl<'a, K, V> Range<'a, K, V> {
     unsafe fn next_unchecked(&mut self) -> (&'a K, &'a V) {
         let handle = self.front;
@@ -1511,6 +1530,9 @@ unsafe fn next_back_unchecked(&mut self) -> (&'a K, &'a V) {
     }
 }
 
+#[unstable(feature = "fused", issue = "35602")]
+impl<'a, K, V> FusedIterator for Range<'a, K, V> {}
+
 impl<'a, K, V> Clone for Range<'a, K, V> {
     fn clone(&self) -> Range<'a, K, V> {
         Range {
@@ -1574,6 +1596,9 @@ fn next_back(&mut self) -> Option<(&'a K, &'a mut V)> {
     }
 }
 
+#[unstable(feature = "fused", issue = "35602")]
+impl<'a, K, V> FusedIterator for RangeMut<'a, K, V> {}
+
 impl<'a, K, V> RangeMut<'a, K, V> {
     unsafe fn next_back_unchecked(&mut self) -> (&'a K, &'a mut V) {
         let handle = ptr::read(&self.back);