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44e4ea3d7a
This makes cascade layer filtering take <2% of CPU time when loading https://vercel.com instead of 30%.
57 lines
1.6 KiB
C++
57 lines
1.6 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 "CSSLayerStatementRule.h"
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#include <LibWeb/Bindings/CSSLayerStatementRulePrototype.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/CSS/CSSLayerBlockRule.h>
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namespace Web::CSS {
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JS_DEFINE_ALLOCATOR(CSSLayerStatementRule);
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JS::NonnullGCPtr<CSSLayerStatementRule> CSSLayerStatementRule::create(JS::Realm& realm, Vector<FlyString> name_list)
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{
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return realm.heap().allocate<CSSLayerStatementRule>(realm, realm, move(name_list));
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}
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CSSLayerStatementRule::CSSLayerStatementRule(JS::Realm& realm, Vector<FlyString> name_list)
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: CSSRule(realm)
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, m_name_list(move(name_list))
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{
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}
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void CSSLayerStatementRule::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSLayerStatementRule);
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}
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String CSSLayerStatementRule::serialized() const
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{
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// AD-HOC: No spec yet.
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StringBuilder builder;
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builder.append("@layer "sv);
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builder.join(", "sv, m_name_list);
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builder.append(';');
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return builder.to_string_without_validation();
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}
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Vector<FlyString> CSSLayerStatementRule::internal_qualified_name_list(Badge<StyleComputer>) const
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{
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Vector<FlyString> qualified_layer_names;
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auto const& qualified_parent_layer_name = parent_layer_internal_qualified_name();
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if (qualified_parent_layer_name.is_empty())
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return m_name_list;
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for (auto const& name : m_name_list)
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qualified_layer_names.append(MUST(String::formatted("{}.{}", qualified_parent_layer_name, name)));
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return qualified_layer_names;
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}
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}
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