1 files changed, 6 insertions, 4 deletions
diff --git a/src/components/script/dom/node.rs b/src/components/script/dom/node.rs
index d9ee80edaa1..edd108e6881 100644
--- a/src/components/script/dom/node.rs
+++ b/src/components/script/dom/node.rs
@@ -264,6 +264,11 @@ impl<'self, View> AbstractNode<View> {
         self.with_base(|b| b.next_sibling)
     }
 
+    /// Is this node a root?
+    pub fn is_root(self) -> bool {
+        self.parent_node().is_none()
+    }
+
     //
     // Downcasting borrows
     //
@@ -415,10 +420,7 @@ impl<'self, View> AbstractNode<View> {
 impl<View> Iterator<AbstractNode<View>> for AbstractNodeChildrenIterator<View> {
     pub fn next(&mut self) -> Option<AbstractNode<View>> {
         let node = self.current_node;
-        self.current_node = match self.current_node {
-            None => None,
-            Some(node) => node.next_sibling(),
-        };
+        self.current_node = self.current_node.chain(|node| node.next_sibling());
         node
     }
 }