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b2aff403fc
And also make it inline. We were spending 8% of selector matching on creating and destroying FlyString copies here. With this change, it's now ~1%.
76 lines
2 KiB
C++
76 lines
2 KiB
C++
/*
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* Copyright (c) 2021, the SerenityOS developers.
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* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/String.h>
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#include <LibJS/Heap/GCPtr.h>
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#include <LibWeb/Bindings/PlatformObject.h>
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#include <LibWeb/CSS/CSSStyleDeclaration.h>
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#include <LibWeb/CSS/Selector.h>
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namespace Web::CSS {
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class CSSRule : public Bindings::PlatformObject {
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WEB_PLATFORM_OBJECT(CSSRule, Bindings::PlatformObject);
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public:
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virtual ~CSSRule() = default;
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// https://drafts.csswg.org/cssom/#dom-cssrule-type
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enum class Type : u16 {
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Style = 1,
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Import = 3,
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Media = 4,
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FontFace = 5,
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Keyframes = 7,
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Keyframe = 8,
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Namespace = 10,
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Supports = 12,
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// AD-HOC: These are not included in the spec, but we need them internally. So, their numbers are arbitrary.
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LayerBlock = 100,
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LayerStatement = 101,
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};
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virtual Type type() const = 0;
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String css_text() const;
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void set_css_text(StringView);
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CSSRule* parent_rule() { return m_parent_rule.ptr(); }
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CSSRule const* parent_rule() const { return m_parent_rule.ptr(); }
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void set_parent_rule(CSSRule*);
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CSSStyleSheet* parent_style_sheet() { return m_parent_style_sheet.ptr(); }
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virtual void set_parent_style_sheet(CSSStyleSheet*);
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template<typename T>
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bool fast_is() const = delete;
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protected:
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explicit CSSRule(JS::Realm&);
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virtual String serialized() const = 0;
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virtual void visit_edges(Cell::Visitor&) override;
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[[nodiscard]] FlyString const& parent_layer_internal_qualified_name() const
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{
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if (!m_cached_layer_name.has_value())
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return parent_layer_internal_qualified_name_slow_case();
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return m_cached_layer_name.value();
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}
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[[nodiscard]] FlyString const& parent_layer_internal_qualified_name_slow_case() const;
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JS::GCPtr<CSSRule> m_parent_rule;
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JS::GCPtr<CSSStyleSheet> m_parent_style_sheet;
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mutable Optional<FlyString> m_cached_layer_name;
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};
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}
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