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https://github.com/servo/servo.git
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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.
81 lines
2.7 KiB
Rust
81 lines
2.7 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::EventBinding::EventMethods;
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use dom::bindings::codegen::Bindings::PopStateEventBinding;
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use dom::bindings::codegen::Bindings::PopStateEventBinding::PopStateEventMethods;
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use dom::bindings::error::Fallible;
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use dom::bindings::inheritance::Castable;
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use dom::bindings::reflector::reflect_dom_object;
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use dom::bindings::root::DomRoot;
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use dom::bindings::str::DOMString;
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use dom::bindings::trace::RootedTraceableBox;
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use dom::event::Event;
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use dom::window::Window;
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use dom_struct::dom_struct;
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use js::jsapi::{Heap, HandleValue, JSContext};
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use js::jsval::JSVal;
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use servo_atoms::Atom;
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// https://html.spec.whatwg.org/multipage/#the-popstateevent-interface
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#[dom_struct]
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pub struct PopStateEvent {
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event: Event,
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#[ignore_heap_size_of = "Defined in rust-mozjs"]
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state: Heap<JSVal>,
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}
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impl PopStateEvent {
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fn new_inherited() -> PopStateEvent {
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PopStateEvent {
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event: Event::new_inherited(),
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state: Heap::default(),
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}
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}
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pub fn new_uninitialized(window: &Window) -> DomRoot<PopStateEvent> {
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reflect_dom_object(Box::new(PopStateEvent::new_inherited()),
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window,
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PopStateEventBinding::Wrap)
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}
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pub fn new(window: &Window,
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type_: Atom,
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bubbles: bool,
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cancelable: bool,
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state: HandleValue)
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-> DomRoot<PopStateEvent> {
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let ev = PopStateEvent::new_uninitialized(window);
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ev.state.set(state.get());
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{
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let event = ev.upcast::<Event>();
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event.init_event(type_, bubbles, cancelable);
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}
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ev
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}
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pub fn Constructor(window: &Window,
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type_: DOMString,
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init: RootedTraceableBox<PopStateEventBinding::PopStateEventInit>)
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-> Fallible<DomRoot<PopStateEvent>> {
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Ok(PopStateEvent::new(window,
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Atom::from(type_),
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init.parent.bubbles,
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init.parent.cancelable,
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init.state.handle()))
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}
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}
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impl PopStateEventMethods for PopStateEvent {
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#[allow(unsafe_code)]
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// https://html.spec.whatwg.org/multipage/#dom-popstateevent-state
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unsafe fn State(&self, _cx: *mut JSContext) -> JSVal {
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self.state.get()
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}
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// https://dom.spec.whatwg.org/#dom-event-istrusted
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fn IsTrusted(&self) -> bool {
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self.event.IsTrusted()
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}
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}
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