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Cleaned up recursive code in Node.clone

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This commit is contained in:
Bruno de Oliveira Abinader 2014-03-17 23:39:08 -04:00
parent 990545c310
commit b05e3666e4
1 changed files with 6 additions and 13 deletions
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19
src/components/script/dom/node.rs
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@ -728,6 +728,7 @@ fn gather_abstract_nodes(cur: &JS<Node>, refs: &mut ~[JS<Node>], postorder: bool
}
/// Specifies whether children must be recursively cloned or not.
#[deriving(Eq)]
pub enum CloneChildrenFlag {
CloneChildren,
DoNotCloneChildren
@ -1289,16 +1290,6 @@ impl Node {
// http://dom.spec.whatwg.org/#concept-node-clone
pub fn clone(node: &JS<Node>, maybe_doc: Option<&JS<Document>>,
clone_children: CloneChildrenFlag) -> JS<Node> {
fn clone_recursively(node: &JS<Node>, copy: &mut JS<Node>, doc: &JS<Document>) {
for ref child in node.get().children() {
let mut cloned = Node::clone(child, Some(doc), DoNotCloneChildren);
match Node::pre_insert(&mut cloned, copy, None) {
Ok(ref mut appended) => clone_recursively(child, appended, doc),
Err(..) => fail!("an error occurred while appending children")
}
}
}
// Step 1.
let mut document = match maybe_doc {
Some(doc) => doc.clone(),
@ -1395,9 +1386,11 @@ impl Node {
// Step 5: cloning steps.
// Step 6.
match clone_children {
CloneChildren => clone_recursively(node, &mut copy, &document),
DoNotCloneChildren => ()
if clone_children == CloneChildren {
for ref child in node.get().children() {
let mut child_copy = Node::clone(child, Some(&document), clone_children);
let _inserted_node = Node::pre_insert(&mut child_copy, &mut copy, None);
}
}
// Step 7.