Add missing FusedIterator impls

rossmacarthur · Dec 7, 2023 · efe54e9 · efe54e9
1 parent 0e9855a
commit efe54e9
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diff --git a/src/adaptors/array_chunks.rs b/src/adaptors/array_chunks.rs
@@ -1,3 +1,5 @@
+use core::iter::FusedIterator;
+
 /// An extension trait that provides the [`array_chunks`] method for iterators.
 ///
 /// Note: the method provided here has a nightly API:
@@ -129,3 +131,5 @@ where
         self.iter.len() / N
     }
 }
+
+impl<I, const N: usize> FusedIterator for ArrayChunks<I, N> where I: FusedIterator {}
diff --git a/src/adaptors/array_windows.rs b/src/adaptors/array_windows.rs
@@ -1,3 +1,5 @@
+use core::iter::FusedIterator;
+
 /// An extension trait that provides the [`array_windows`] method for iterators.
 ///
 /// [`array_windows`]: IterArrayWindows::array_windows
@@ -120,3 +122,10 @@ where
         self.iter.count().saturating_sub(N - 1)
     }
 }
+
+impl<I, const N: usize> FusedIterator for ArrayWindows<I, N>
+where
+    I: FusedIterator + Clone,
+    I::Item: Clone,
+{
+}
diff --git a/src/adaptors/cartesian_product.rs b/src/adaptors/cartesian_product.rs
@@ -1,3 +1,5 @@
+use core::iter::FusedIterator;
+
 /// An extension trait that provides the [`cartesian_product`] method for
 /// iterators.
 ///
@@ -85,6 +87,14 @@ where
     }
 }
 
+impl<I, J> FusedIterator for CartesianProduct<I, J>
+where
+    I: FusedIterator,
+    J: FusedIterator + Clone,
+    I::Item: Clone,
+{
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Macro
 ////////////////////////////////////////////////////////////////////////////////