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cf27eef583
While this is used in the implementation of Runtime objects itself, Heap seems like a more appropriate home. This will also help in factoring out the GC implementation into it's own library as the heap explicitly has knowledge of WeakContainer.
44 lines
1.0 KiB
C++
44 lines
1.0 KiB
C++
/*
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* Copyright (c) 2021-2022, Idan Horowitz <idan.horowitz@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 <LibJS/Heap/WeakContainer.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/Object.h>
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namespace JS {
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class WeakRef final
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: public Object
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, public WeakContainer {
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JS_OBJECT(WeakRef, Object);
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JS_DECLARE_ALLOCATOR(WeakRef);
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public:
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static NonnullGCPtr<WeakRef> create(Realm&, Object&);
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static NonnullGCPtr<WeakRef> create(Realm&, Symbol&);
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virtual ~WeakRef() override = default;
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auto const& value() const { return m_value; }
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void update_execution_generation() { m_last_execution_generation = vm().execution_generation(); }
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virtual void remove_dead_cells(Badge<Heap>) override;
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private:
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explicit WeakRef(Object&, Object& prototype);
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explicit WeakRef(Symbol&, Object& prototype);
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virtual void visit_edges(Visitor&) override;
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Variant<GCPtr<Object>, GCPtr<Symbol>, Empty> m_value;
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u32 m_last_execution_generation { 0 };
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};
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}
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