fune/layout/style/CSSNamespaceRule.h
Emilio Cobos Álvarez 039592f4d8 Bug 1682003 - Avoid UTF-8 -> UTF-16 conversion during CSSOM serialization. r=heycam
This lifts a bunch of string conversions higher up the stack, but allows
us to make the servo code use utf-8 unconditionally, and seemed faster
in my benchmarking (see comment 0).

It should also make a bunch of attribute setters faster too (like
setting .cssText), now that we use UTF8String for them (we couldn't
because we couldn't specify different string types for the getter and
setters).

Differential Revision: https://phabricator.services.mozilla.com/D99590
2020-12-17 14:04:35 +00:00

65 lines
1.9 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_CSSNamespaceRule_h
#define mozilla_dom_CSSNamespaceRule_h
#include "mozilla/css/Rule.h"
#include "mozilla/dom/CSSNamespaceRuleBinding.h"
#include "mozilla/ServoBindingTypes.h"
class nsAtom;
namespace mozilla {
namespace dom {
class CSSNamespaceRule final : public css::Rule {
public:
CSSNamespaceRule(already_AddRefed<RawServoNamespaceRule> aRule,
StyleSheet* aSheet, css::Rule* aParentRule, uint32_t aLine,
uint32_t aColumn)
: css::Rule(aSheet, aParentRule, aLine, aColumn),
mRawRule(std::move(aRule)) {}
bool IsCCLeaf() const final { return Rule::IsCCLeaf(); }
#ifdef DEBUG
void List(FILE* out = stdout, int32_t aIndent = 0) const final;
#endif
nsAtom* GetPrefix() const;
void GetURLSpec(nsString& aURLSpec) const;
// WebIDL interface
void GetCssText(nsACString& aCssText) const final;
// WebIDL interfaces
uint16_t Type() const final { return CSSRule_Binding::NAMESPACE_RULE; }
const RawServoNamespaceRule* Raw() const { return mRawRule.get(); }
void GetNamespaceURI(nsString& aNamespaceURI) { GetURLSpec(aNamespaceURI); }
void GetPrefix(DOMString& aPrefix) {
aPrefix.SetKnownLiveAtom(GetPrefix(), DOMString::eTreatNullAsEmpty);
}
size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const final;
JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) final {
return CSSNamespaceRule_Binding::Wrap(aCx, this, aGivenProto);
}
private:
~CSSNamespaceRule();
RefPtr<RawServoNamespaceRule> mRawRule;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_CSSNamespaceRule_h