bfd354492e
With this change, we now have ~1200 CellAllocators across both LibJS and LibWeb in a normal WebContent instance. This gives us a minimum heap size of 4.7 MiB in the scenario where we only have one cell allocated per type. Of course, in practice there will be many more of each type, so the effective overhead is quite a bit smaller than that in practice. I left a few types unconverted to this mechanism because I got tired of doing this. :^)
112 lines
5.4 KiB
C++
112 lines
5.4 KiB
C++
/*
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* Copyright (c) 2023, Luke Wilde <lukew@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 <LibWeb/HTML/HTMLElement.h>
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#include <LibWeb/WebIDL/CallbackType.h>
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namespace Web::HTML {
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struct AlreadyConstructedCustomElementMarker {
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};
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// https://html.spec.whatwg.org/multipage/custom-elements.html#custom-element-definition
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class CustomElementDefinition : public JS::Cell {
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JS_CELL(CustomElementDefinition, JS::Cell);
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JS_DECLARE_ALLOCATOR(CustomElementDefinition);
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using LifecycleCallbacksStorage = OrderedHashMap<FlyString, JS::Handle<WebIDL::CallbackType>>;
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using ConstructionStackStorage = Vector<Variant<JS::Handle<DOM::Element>, AlreadyConstructedCustomElementMarker>>;
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static JS::NonnullGCPtr<CustomElementDefinition> create(JS::Realm& realm, String const& name, String const& local_name, WebIDL::CallbackType& constructor, Vector<String>&& observed_attributes, LifecycleCallbacksStorage&& lifecycle_callbacks, bool form_associated, bool disable_internals, bool disable_shadow)
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{
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return realm.heap().allocate<CustomElementDefinition>(realm, name, local_name, constructor, move(observed_attributes), move(lifecycle_callbacks), form_associated, disable_internals, disable_shadow);
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}
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~CustomElementDefinition() = default;
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String const& name() const { return m_name; }
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String const& local_name() const { return m_local_name; }
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WebIDL::CallbackType& constructor() { return *m_constructor; }
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WebIDL::CallbackType const& constructor() const { return *m_constructor; }
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Vector<String> const& observed_attributes() const { return m_observed_attributes; }
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LifecycleCallbacksStorage const& lifecycle_callbacks() const { return m_lifecycle_callbacks; }
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ConstructionStackStorage& construction_stack() { return m_construction_stack; }
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ConstructionStackStorage const& construction_stack() const { return m_construction_stack; }
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bool form_associated() const { return m_form_associated; }
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bool disable_internals() const { return m_disable_internals; }
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bool disable_shadow() const { return m_disable_shadow; }
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private:
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CustomElementDefinition(String const& name, String const& local_name, WebIDL::CallbackType& constructor, Vector<String>&& observed_attributes, LifecycleCallbacksStorage&& lifecycle_callbacks, bool form_associated, bool disable_internals, bool disable_shadow)
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: m_name(name)
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, m_local_name(local_name)
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, m_constructor(JS::make_handle(constructor))
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, m_observed_attributes(move(observed_attributes))
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, m_lifecycle_callbacks(move(lifecycle_callbacks))
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, m_form_associated(form_associated)
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, m_disable_internals(disable_internals)
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, m_disable_shadow(disable_shadow)
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{
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}
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// https://html.spec.whatwg.org/multipage/custom-elements.html#concept-custom-element-definition-name
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// A name
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// A valid custom element name
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String m_name;
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// https://html.spec.whatwg.org/multipage/custom-elements.html#concept-custom-element-definition-local-name
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// A local name
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// A local name
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String m_local_name;
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// https://html.spec.whatwg.org/multipage/custom-elements.html#concept-custom-element-definition-constructor
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// A Web IDL CustomElementConstructor callback function type value wrapping the custom element constructor
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JS::Handle<WebIDL::CallbackType> m_constructor;
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// https://html.spec.whatwg.org/multipage/custom-elements.html#concept-custom-element-definition-observed-attributes
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// A list of observed attributes
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// A sequence<DOMString>
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Vector<String> m_observed_attributes;
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// https://html.spec.whatwg.org/multipage/custom-elements.html#concept-custom-element-definition-lifecycle-callbacks
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// A collection of lifecycle callbacks
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// A map, whose keys are the strings "connectedCallback", "disconnectedCallback", "adoptedCallback", "attributeChangedCallback",
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// "formAssociatedCallback", "formDisabledCallback", "formResetCallback", and "formStateRestoreCallback".
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// The corresponding values are either a Web IDL Function callback function type value, or null.
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// By default the value of each entry is null.
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LifecycleCallbacksStorage m_lifecycle_callbacks;
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// https://html.spec.whatwg.org/multipage/custom-elements.html#concept-custom-element-definition-construction-stack
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// A construction stack
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// A list, initially empty, that is manipulated by the upgrade an element algorithm and the HTML element constructors.
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// Each entry in the list will be either an element or an already constructed marker.
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ConstructionStackStorage m_construction_stack;
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// https://html.spec.whatwg.org/multipage/custom-elements.html#concept-custom-element-definition-form-associated
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// A form-associated boolean
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// If this is true, user agent treats elements associated to this custom element definition as form-associated custom elements.
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bool m_form_associated { false };
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// https://html.spec.whatwg.org/multipage/custom-elements.html#concept-custom-element-definition-disable-internals
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// A disable internals boolean
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// Controls attachInternals().
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bool m_disable_internals { false };
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// https://html.spec.whatwg.org/multipage/custom-elements.html#concept-custom-element-definition-disable-shadow
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// A disable shadow boolean
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// Controls attachShadow().
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bool m_disable_shadow { false };
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};
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}
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