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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.
117 lines
4 KiB
Rust
117 lines
4 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::attr::Attr;
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use dom::bindings::codegen::Bindings::HTMLBaseElementBinding;
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use dom::bindings::codegen::Bindings::HTMLBaseElementBinding::HTMLBaseElementMethods;
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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::{AttributeMutation, Element};
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use dom::htmlelement::HTMLElement;
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use dom::node::{Node, UnbindContext, document_from_node};
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use dom::virtualmethods::VirtualMethods;
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use dom_struct::dom_struct;
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use html5ever::{LocalName, Prefix};
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use servo_url::ServoUrl;
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#[dom_struct]
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pub struct HTMLBaseElement {
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htmlelement: HTMLElement
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}
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impl HTMLBaseElement {
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fn new_inherited(local_name: LocalName, prefix: Option<Prefix>, document: &Document) -> HTMLBaseElement {
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HTMLBaseElement {
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htmlelement: HTMLElement::new_inherited(local_name, prefix, document)
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}
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}
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#[allow(unrooted_must_root)]
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pub fn new(local_name: LocalName,
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prefix: Option<Prefix>,
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document: &Document) -> DomRoot<HTMLBaseElement> {
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Node::reflect_node(Box::new(HTMLBaseElement::new_inherited(local_name, prefix, document)),
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document,
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HTMLBaseElementBinding::Wrap)
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}
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/// https://html.spec.whatwg.org/multipage/#frozen-base-url
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pub fn frozen_base_url(&self) -> ServoUrl {
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let href = self.upcast::<Element>().get_attribute(&ns!(), &local_name!("href"))
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.expect("The frozen base url is only defined for base elements \
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that have a base url.");
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let document = document_from_node(self);
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let base = document.fallback_base_url();
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let parsed = base.join(&href.value());
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parsed.unwrap_or(base)
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}
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/// Update the cached base element in response to binding or unbinding from
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/// a tree.
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pub fn bind_unbind(&self, tree_in_doc: bool) {
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if !tree_in_doc {
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return;
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}
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if self.upcast::<Element>().has_attribute(&local_name!("href")) {
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let document = document_from_node(self);
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document.refresh_base_element();
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}
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}
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}
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impl HTMLBaseElementMethods for HTMLBaseElement {
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// https://html.spec.whatwg.org/multipage/#dom-base-href
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fn Href(&self) -> DOMString {
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// Step 1.
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let document = document_from_node(self);
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// Step 2.
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let attr = self.upcast::<Element>().get_attribute(&ns!(), &local_name!("href"));
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let value = attr.as_ref().map(|attr| attr.value());
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let url = value.as_ref().map_or("", |value| &**value);
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// Step 3.
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let url_record = document.fallback_base_url().join(url);
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match url_record {
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Err(_) => {
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// Step 4.
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url.into()
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}
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Ok(url_record) => {
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// Step 5.
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url_record.into_string().into()
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},
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}
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}
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// https://html.spec.whatwg.org/multipage/#dom-base-href
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make_setter!(SetHref, "href");
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}
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impl VirtualMethods for HTMLBaseElement {
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fn super_type(&self) -> Option<&VirtualMethods> {
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Some(self.upcast::<HTMLElement>() as &VirtualMethods)
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}
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fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation) {
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self.super_type().unwrap().attribute_mutated(attr, mutation);
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if *attr.local_name() == local_name!("href") {
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document_from_node(self).refresh_base_element();
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}
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}
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fn bind_to_tree(&self, tree_in_doc: bool) {
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self.super_type().unwrap().bind_to_tree(tree_in_doc);
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self.bind_unbind(tree_in_doc);
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}
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fn unbind_from_tree(&self, context: &UnbindContext) {
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self.super_type().unwrap().unbind_from_tree(context);
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self.bind_unbind(context.tree_in_doc);
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}
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}
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