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Auto merge of #19453 - emilio:is-root-is-slow, r=upsuper

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style: Add a fast-path for GeckoElement::is_root.

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bors-servo 2017-12-01 15:14:13 -06:00 • committed by GitHub
commit bca8951182
1 changed files with 9 additions and 0 deletions
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9
components/style/gecko/wrapper.rs
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@ -1917,6 +1917,15 @@ impl<'le> ::selectors::Element for GeckoElement<'le> {
#[inline] #[inline]
fn is_root(&self) -> bool { fn is_root(&self) -> bool {
let parent_node = match self.as_node().parent_node() {
Some(parent_node) => parent_node,
None => return false,
};
if !parent_node.is_document() {
return false;
}
unsafe { unsafe {
Gecko_IsRootElement(self.0) Gecko_IsRootElement(self.0)
} }