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https://github.com/LadybirdBrowser/ladybird.git
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a6dfc74e93
Before this change, we were going through the chain of base classes for each IDL interface object and having them set the prototype to their prototype. Instead of doing that, reorder things so that we set the right prototype immediately in Foo::initialize(), and then don't bother in all the base class overrides. This knocks off a ~1% profile item on Speedometer 3.
77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
/*
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* Copyright (c) 2024, Sam Atkins <sam@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "CSSNestedDeclarations.h"
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#include <LibWeb/Bindings/CSSNestedDeclarationsPrototype.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/CSS/CSSStyleRule.h>
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namespace Web::CSS {
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GC_DEFINE_ALLOCATOR(CSSNestedDeclarations);
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GC::Ref<CSSNestedDeclarations> CSSNestedDeclarations::create(JS::Realm& realm, CSSStyleProperties& declaration)
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{
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return realm.create<CSSNestedDeclarations>(realm, declaration);
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}
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CSSNestedDeclarations::CSSNestedDeclarations(JS::Realm& realm, CSSStyleProperties& declaration)
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: CSSRule(realm, Type::NestedDeclarations)
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, m_declaration(declaration)
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{
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m_declaration->set_parent_rule(*this);
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}
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void CSSNestedDeclarations::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSNestedDeclarations);
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Base::initialize(realm);
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}
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void CSSNestedDeclarations::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_declaration);
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visitor.visit(m_parent_style_rule);
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}
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CSSStyleDeclaration* CSSNestedDeclarations::style()
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{
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return m_declaration;
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}
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CSSStyleRule const& CSSNestedDeclarations::parent_style_rule() const
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{
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if (m_parent_style_rule)
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return *m_parent_style_rule;
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for (auto* parent = parent_rule(); parent; parent = parent->parent_rule()) {
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if (is<CSSStyleRule>(parent)) {
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m_parent_style_rule = static_cast<CSSStyleRule const*>(parent);
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return *m_parent_style_rule;
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}
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}
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dbgln("CSSNestedDeclarations has no parent style rule!");
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VERIFY_NOT_REACHED();
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}
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String CSSNestedDeclarations::serialized() const
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{
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// NOTE: There's no proper spec for this yet, only this note:
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// "The CSSNestedDeclarations rule serializes as if its declaration block had been serialized directly."
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// - https://drafts.csswg.org/css-nesting-1/#ref-for-cssnesteddeclarations%E2%91%A1
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// So, we'll do the simple thing and hope it's good.
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return m_declaration->serialized();
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}
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void CSSNestedDeclarations::clear_caches()
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{
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Base::clear_caches();
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m_parent_style_rule = nullptr;
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}
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}
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