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LibJS: Implement WeakRef changes from 'Symbol as WeakMap Keys Proposal'

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This commit is contained in:
Idan Horowitz 2022-06-22 23:09:59 +03:00
parent dbd0110721
commit 53ed8decaf
6 changed files with 69 additions and 26 deletions
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12
Userland/Libraries/LibJS/Runtime/WeakRef.h
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
* Copyright (c) 2021-2022, Idan Horowitz <idan.horowitz@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -18,12 +18,14 @@ class WeakRef final
JS_OBJECT(WeakRef, Object);
public:
static WeakRef* create(GlobalObject&, Object*);
static WeakRef* create(GlobalObject&, Object&);
static WeakRef* create(GlobalObject&, Symbol&);
explicit WeakRef(Object*, Object& prototype);
explicit WeakRef(Object&, Object& prototype);
explicit WeakRef(Symbol&, Object& prototype);
virtual ~WeakRef() override = default;
Object* value() const { return m_value; };
auto const& value() const { return m_value; };
void update_execution_generation() { m_last_execution_generation = vm().execution_generation(); };
@ -32,7 +34,7 @@ public:
private:
virtual void visit_edges(Visitor&) override;
Object* m_value { nullptr };
Variant<Object*, Symbol*, Empty> m_value;
u32 m_last_execution_generation { 0 };
};