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020c2b59c4
These are similar to prototypes and constructors in that they will now be lazily instantiated when they are first requested.
97 lines
2.9 KiB
C++
97 lines
2.9 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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template<typename NamespaceType>
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JS::Object& ensure_web_namespace(DeprecatedString const& namespace_name)
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{
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if (auto it = m_namespaces.find(namespace_name); it != m_namespaces.end())
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return *it->value;
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create_web_namespace<NamespaceType>(*m_realm);
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return *m_namespaces.find(namespace_name)->value;
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}
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template<typename PrototypeType>
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JS::Object& ensure_web_prototype(DeprecatedString const& class_name)
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{
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if (auto it = m_prototypes.find(class_name); it != m_prototypes.end())
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return *it->value;
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create_web_prototype_and_constructor<PrototypeType>(*m_realm);
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return *m_prototypes.find(class_name)->value;
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}
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template<typename PrototypeType>
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JS::NativeFunction& ensure_web_constructor(DeprecatedString const& class_name)
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{
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if (auto it = m_constructors.find(class_name); it != m_constructors.end())
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return *it->value;
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create_web_prototype_and_constructor<PrototypeType>(*m_realm);
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return *m_constructors.find(class_name)->value;
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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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template<typename NamespaceType>
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void create_web_namespace(JS::Realm& realm);
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template<typename PrototypeType>
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void create_web_prototype_and_constructor(JS::Realm& realm);
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HashMap<DeprecatedString, JS::NonnullGCPtr<JS::Object>> m_namespaces;
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HashMap<DeprecatedString, JS::NonnullGCPtr<JS::Object>> m_prototypes;
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HashMap<DeprecatedString, JS::GCPtr<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_namespace(JS::Realm& realm, DeprecatedString const& namespace_name)
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{
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return host_defined_intrinsics(realm).ensure_web_namespace<T>(namespace_name);
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}
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template<typename T>
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[[nodiscard]] JS::Object& ensure_web_prototype(JS::Realm& realm, DeprecatedString 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, DeprecatedString 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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}
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