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https://github.com/LadybirdBrowser/ladybird.git
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07b950d8a6
Hopefully no one else will forget to call set_prototype with the cached prototype they just retrieved from a realm and spend a long time wondering why their object has no properties...
85 lines
2.3 KiB
C++
85 lines
2.3 KiB
C++
/*
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* Copyright (c) 2022, Andrew Kaster <akaster@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/Forward.h>
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#include <AK/HashMap.h>
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#include <LibJS/Forward.h>
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#include <LibJS/Heap/Cell.h>
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#include <LibJS/Heap/Heap.h>
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#include <LibJS/Runtime/VM.h>
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#include <LibWeb/Bindings/HostDefined.h>
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namespace Web::Bindings {
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class Intrinsics final : public JS::Cell {
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JS_CELL(Intrinsics, JS::Cell);
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public:
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Intrinsics(JS::Realm& realm)
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: m_realm(realm)
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{
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}
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JS::Object& cached_web_prototype(String const& class_name);
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template<typename T>
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JS::Object& ensure_web_prototype(String const& class_name)
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{
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auto it = m_prototypes.find(class_name);
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if (it != m_prototypes.end())
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return *it->value;
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auto& realm = *m_realm;
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auto* prototype = heap().allocate<T>(realm, realm);
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m_prototypes.set(class_name, prototype);
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return *prototype;
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}
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template<typename T>
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JS::NativeFunction& ensure_web_constructor(String const& class_name)
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{
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auto it = m_constructors.find(class_name);
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if (it != m_constructors.end())
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return *it->value;
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auto& realm = *m_realm;
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auto* constructor = heap().allocate<T>(realm, realm);
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m_constructors.set(class_name, constructor);
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return *constructor;
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}
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private:
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virtual void visit_edges(JS::Cell::Visitor&) override;
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HashMap<String, JS::Object*> m_prototypes;
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HashMap<String, JS::NativeFunction*> m_constructors;
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JS::NonnullGCPtr<JS::Realm> m_realm;
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};
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[[nodiscard]] inline Intrinsics& host_defined_intrinsics(JS::Realm& realm)
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{
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return *verify_cast<HostDefined>(realm.host_defined())->intrinsics;
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}
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template<typename T>
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[[nodiscard]] JS::Object& ensure_web_prototype(JS::Realm& realm, String const& class_name)
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{
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return host_defined_intrinsics(realm).ensure_web_prototype<T>(class_name);
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}
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template<typename T>
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[[nodiscard]] JS::NativeFunction& ensure_web_constructor(JS::Realm& realm, String const& class_name)
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{
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return host_defined_intrinsics(realm).ensure_web_constructor<T>(class_name);
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}
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[[nodiscard]] inline JS::Object& cached_web_prototype(JS::Realm& realm, String const& class_name)
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{
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return host_defined_intrinsics(realm).cached_web_prototype(class_name);
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}
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}
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