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63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef builtin_WeakRefObject_h
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#define builtin_WeakRefObject_h
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#include "gc/Barrier.h"
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#include "vm/NativeObject.h"
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namespace js {
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class WeakRefObject : public NativeObject
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{
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public:
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struct Referent {
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explicit Referent(JSObject* obj, bool enabled)
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: target(obj), enabled(enabled) {}
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WeakRef<JSObject*> target;
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bool enabled;
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};
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static const Class class_;
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static JSObject* initClass(JSContext* cx, HandleObject obj);
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static WeakRefObject* create(JSContext* cx, HandleObject target, HandleObject proto = nullptr);
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static void trace(JSTracer* trc, JSObject* obj);
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static void finalize(FreeOp* fop, JSObject* obj);
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[[nodiscard]] static bool construct(JSContext* cx, unsigned argc, Value* vp);
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static bool deref(JSContext* cx, unsigned argc, Value* vp);
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Referent* getData() const {
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return static_cast<Referent*>(getPrivate());
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}
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WeakRef<JSObject*>& target() {
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MOZ_ASSERT(getData());
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return getData()->target;
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}
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static const JSPropertySpec properties[];
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static const JSFunctionSpec methods[];
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private:
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};
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extern JSObject*
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InitWeakRefClass(JSContext* cx, HandleObject obj);
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extern JSObject*
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InitBareWeakRefCtor(JSContext* cx, HandleObject obj);
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static inline bool
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CanBeHeldWeakly(const Value& value)
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{
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return value.isObject() || value.isSymbol();
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}
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} // namespace js
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#endif /* builtin_WeakRefObject_h */
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