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c62996abd7
`SlottableMixin::assigned_slot()` was using `as<DOM::Node>(*this)` to get a `Node` reference. Since `SlottableMixin` has no inheritance relationship with `Node`, `as_if<>` can't use `static_cast` and falls through to `dynamic_cast`, which is expensive. Replace this with a virtual `slottable_as_node()` accessor overridden in `Element` and `Text`. This showed up as hot in profiles when loading the GC heap explorer page.
59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2023, Sam Atkins <atkinssj@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 <LibWeb/DOM/CharacterData.h>
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#include <LibWeb/DOM/Element.h>
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#include <LibWeb/DOM/Slottable.h>
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#include <LibWeb/Export.h>
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namespace Web::DOM {
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class WEB_API Text
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: public CharacterData
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, public SlottableMixin {
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WEB_PLATFORM_OBJECT(Text, CharacterData);
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GC_DECLARE_ALLOCATOR(Text);
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public:
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virtual ~Text() override = default;
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static WebIDL::ExceptionOr<GC::Ref<Text>> construct_impl(JS::Realm& realm, Utf16String data);
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// ^Node
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virtual FlyString node_name() const override { return "#text"_fly_string; }
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virtual Node& slottable_as_node() override { return *this; }
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Optional<size_t> max_length() const { return m_max_length; }
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void set_max_length(Optional<size_t> max_length) { m_max_length = move(max_length); }
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WebIDL::ExceptionOr<GC::Ref<Text>> split_text(size_t offset);
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Utf16String whole_text();
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bool is_password_input() const { return m_is_password_input; }
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void set_is_password_input(Badge<HTML::HTMLInputElement>, bool b) { m_is_password_input = b; }
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Optional<Element::Directionality> directionality() const;
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protected:
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Text(Document&, Utf16String);
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Text(Document&, NodeType, Utf16String);
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(Cell::Visitor&) override;
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private:
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Optional<size_t> m_max_length {};
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bool m_is_password_input { false };
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};
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template<>
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inline bool Node::fast_is<Text>() const { return is_text(); }
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}
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