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Auto merge of #6778 - nox:childnodes, r=jdm

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Optimise Node.childNodes



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This commit is contained in:
bors-servo 2015-08-10 14:05:02 -06:00
commit 2b9590c5a5
5 changed files with 253 additions and 32 deletions
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3
components/layout/parallel.rs
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@ -123,8 +123,7 @@ pub trait ParallelPreorderDomTraversal : PreorderDomTraversal {
// Perform the appropriate traversal.
self.process(node);
// NB: O(n).
let child_count = node.children().count();
let child_count = node.children_count();
// Reset the count of children.
{

4
components/layout/wrapper.rs
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@ -237,6 +237,10 @@ impl<'ln> LayoutNode<'ln> {
self.node.next_sibling_ref().map(|node| self.new_with_this_lifetime(&node))
}
}
pub fn children_count(&self) -> u32 {
unsafe { self.node.children_count() }
}
}
impl<'ln> LayoutNode<'ln> {