mirror of
https://github.com/RGBCube/serenity
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50428ea8d2
Intrinsics, i.e. mostly constructor and prototype objects, but also things like empty and new object shape now live on a new heap-allocated JS::Intrinsics object, thus completing the long journey of taking all the magic away from the global object. This represents the Realm's [[Intrinsics]] slot in the spec and matches its existing [[GlobalObject]] / [[GlobalEnv]] slots in terms of architecture. In the majority of cases it should now be possibly to fully allocate a regular object without the global object existing, and in fact that's what we do now - the realm is allocated before the global object, and the intrinsics between both :^)
59 lines
2 KiB
C++
59 lines
2 KiB
C++
/*
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* Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
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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/Badge.h>
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#include <AK/OwnPtr.h>
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#include <AK/StringView.h>
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#include <AK/Weakable.h>
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#include <LibJS/Heap/Cell.h>
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#include <LibJS/Runtime/Intrinsics.h>
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namespace JS {
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// 9.3 Realms, https://tc39.es/ecma262/#realm-record
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class Realm final
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: public Cell
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, public Weakable<Realm> {
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public:
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struct HostDefined {
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virtual ~HostDefined() = default;
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};
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Realm() = default;
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static Realm* create(VM&);
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static ThrowCompletionOr<NonnullOwnPtr<ExecutionContext>> initialize_host_defined_realm(VM&, Function<GlobalObject*(Realm&)> create_global_object, Function<GlobalObject*(Realm&)> create_global_this_value);
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void set_global_object(GlobalObject* global_object, GlobalObject* this_value);
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[[nodiscard]] GlobalObject& global_object() const { return *m_global_object; }
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[[nodiscard]] GlobalEnvironment& global_environment() const { return *m_global_environment; }
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[[nodiscard]] Intrinsics const& intrinsics() const { return *m_intrinsics; }
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[[nodiscard]] Intrinsics& intrinsics() { return *m_intrinsics; }
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void set_intrinsics(Badge<Intrinsics>, Intrinsics& intrinsics)
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{
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VERIFY(!m_intrinsics);
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m_intrinsics = &intrinsics;
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}
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HostDefined* host_defined() { return m_host_defined; }
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void set_host_defined(OwnPtr<HostDefined> host_defined) { m_host_defined = move(host_defined); }
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private:
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virtual StringView class_name() const override { return "Realm"sv; }
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virtual void visit_edges(Visitor&) override;
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Intrinsics* m_intrinsics { nullptr }; // [[Intrinsics]]
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GlobalObject* m_global_object { nullptr }; // [[GlobalObject]]
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GlobalEnvironment* m_global_environment { nullptr }; // [[GlobalEnv]]
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OwnPtr<HostDefined> m_host_defined; // [[HostDefined]]
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};
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}
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