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aa15dc269f
http://www.robohornet.org gives a score of 101.36 on master, and 102.68 with this PR. The latter is slightly better, but probably within noise level. So it looks like this PR does not affect DOM performance. This is expected since `Box::new` is defined as: ```rust impl<T> Box<T> { #[inline(always)] pub fn new(x: T) -> Box<T> { box x } } ``` With inlining, it should compile to the same as box syntax.
102 lines
3.7 KiB
Rust
102 lines
3.7 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::bindings::codegen::Bindings::DocumentFragmentBinding;
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use dom::bindings::codegen::Bindings::DocumentFragmentBinding::DocumentFragmentMethods;
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use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
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use dom::bindings::codegen::UnionTypes::NodeOrString;
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use dom::bindings::error::{ErrorResult, Fallible};
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use dom::bindings::inheritance::Castable;
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use dom::bindings::root::DomRoot;
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use dom::bindings::str::DOMString;
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use dom::document::Document;
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use dom::element::Element;
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use dom::htmlcollection::HTMLCollection;
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use dom::node::{Node, window_from_node};
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use dom::nodelist::NodeList;
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use dom::window::Window;
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use dom_struct::dom_struct;
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use servo_atoms::Atom;
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// https://dom.spec.whatwg.org/#documentfragment
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#[dom_struct]
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pub struct DocumentFragment {
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node: Node,
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}
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impl DocumentFragment {
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/// Creates a new DocumentFragment.
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fn new_inherited(document: &Document) -> DocumentFragment {
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DocumentFragment {
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node: Node::new_inherited(document),
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}
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}
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pub fn new(document: &Document) -> DomRoot<DocumentFragment> {
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Node::reflect_node(Box::new(DocumentFragment::new_inherited(document)),
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document,
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DocumentFragmentBinding::Wrap)
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}
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pub fn Constructor(window: &Window) -> Fallible<DomRoot<DocumentFragment>> {
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let document = window.Document();
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Ok(DocumentFragment::new(&document))
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}
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}
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impl DocumentFragmentMethods for DocumentFragment {
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// https://dom.spec.whatwg.org/#dom-parentnode-children
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fn Children(&self) -> DomRoot<HTMLCollection> {
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let window = window_from_node(self);
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HTMLCollection::children(&window, self.upcast())
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}
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// https://dom.spec.whatwg.org/#dom-nonelementparentnode-getelementbyid
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fn GetElementById(&self, id: DOMString) -> Option<DomRoot<Element>> {
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let node = self.upcast::<Node>();
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let id = Atom::from(id);
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node.traverse_preorder().filter_map(DomRoot::downcast::<Element>).find(|descendant| {
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match descendant.get_attribute(&ns!(), &local_name!("id")) {
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None => false,
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Some(attr) => *attr.value().as_atom() == id,
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}
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})
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}
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// https://dom.spec.whatwg.org/#dom-parentnode-firstelementchild
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fn GetFirstElementChild(&self) -> Option<DomRoot<Element>> {
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self.upcast::<Node>().child_elements().next()
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}
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// https://dom.spec.whatwg.org/#dom-parentnode-lastelementchild
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fn GetLastElementChild(&self) -> Option<DomRoot<Element>> {
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self.upcast::<Node>().rev_children().filter_map(DomRoot::downcast::<Element>).next()
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}
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// https://dom.spec.whatwg.org/#dom-parentnode-childelementcount
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fn ChildElementCount(&self) -> u32 {
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self.upcast::<Node>().child_elements().count() as u32
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}
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// https://dom.spec.whatwg.org/#dom-parentnode-prepend
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fn Prepend(&self, nodes: Vec<NodeOrString>) -> ErrorResult {
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self.upcast::<Node>().prepend(nodes)
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}
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// https://dom.spec.whatwg.org/#dom-parentnode-append
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fn Append(&self, nodes: Vec<NodeOrString>) -> ErrorResult {
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self.upcast::<Node>().append(nodes)
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}
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// https://dom.spec.whatwg.org/#dom-parentnode-queryselector
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fn QuerySelector(&self, selectors: DOMString) -> Fallible<Option<DomRoot<Element>>> {
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self.upcast::<Node>().query_selector(selectors)
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}
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// https://dom.spec.whatwg.org/#dom-parentnode-queryselectorall
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fn QuerySelectorAll(&self, selectors: DOMString) -> Fallible<DomRoot<NodeList>> {
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self.upcast::<Node>().query_selector_all(selectors)
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}
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}
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