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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef proxy_DeadObjectProxy_h
#define proxy_DeadObjectProxy_h
#include "js/Proxy.h"
namespace js {
class ProxyObject;
enum DeadObjectProxyFlags {
DeadObjectProxyIsCallable = 1 << 0,
DeadObjectProxyIsConstructor = 1 << 1,
DeadObjectProxyIsBackgroundFinalized = 1 << 2
};
class DeadObjectProxy : public BaseProxyHandler {
public:
explicit constexpr DeadObjectProxy() : BaseProxyHandler(&family) {}
/* Standard internal methods. */
virtual bool getOwnPropertyDescriptor(
JSContext* cx, JS::HandleObject wrapper, JS::HandleId id,
JS::MutableHandle<mozilla::Maybe<JS::PropertyDescriptor>> desc)
const override;
virtual bool defineProperty(JSContext* cx, JS::HandleObject wrapper,
JS::HandleId id,
JS::Handle<JS::PropertyDescriptor> desc,
JS::ObjectOpResult& result) const override;
virtual bool ownPropertyKeys(JSContext* cx, JS::HandleObject wrapper,
JS::MutableHandleIdVector props) const override;
virtual bool delete_(JSContext* cx, JS::HandleObject wrapper, JS::HandleId id,
JS::ObjectOpResult& result) const override;
virtual bool getPrototype(JSContext* cx, JS::HandleObject proxy,
JS::MutableHandleObject protop) const override;
virtual bool getPrototypeIfOrdinary(
JSContext* cx, JS::HandleObject proxy, bool* isOrdinary,
JS::MutableHandleObject protop) const override;
virtual bool preventExtensions(JSContext* cx, JS::HandleObject proxy,
JS::ObjectOpResult& result) const override;
virtual bool isExtensible(JSContext* cx, JS::HandleObject proxy,
bool* extensible) const override;
virtual bool call(JSContext* cx, JS::HandleObject proxy,
const JS::CallArgs& args) const override;
virtual bool construct(JSContext* cx, JS::HandleObject proxy,
const JS::CallArgs& args) const override;
/* SpiderMonkey extensions. */
// BaseProxyHandler::enumerate will throw by calling ownKeys.
virtual bool nativeCall(JSContext* cx, JS::IsAcceptableThis test,
JS::NativeImpl impl,
const JS::CallArgs& args) const override;
virtual bool getBuiltinClass(JSContext* cx, JS::HandleObject proxy,
ESClass* cls) const override;
virtual bool isArray(JSContext* cx, JS::HandleObject proxy,
JS::IsArrayAnswer* answer) const override;
virtual const char* className(JSContext* cx,
JS::HandleObject proxy) const override;
virtual JSString* fun_toString(JSContext* cx, JS::HandleObject proxy,
bool isToSource) const override;
virtual RegExpShared* regexp_toShared(JSContext* cx,
JS::HandleObject proxy) const override;
// Use the regular paths for private values
virtual bool useProxyExpandoObjectForPrivateFields() const override {
return false;
}
virtual bool isCallable(JSObject* obj) const override {
return flags(obj) & DeadObjectProxyIsCallable;
}
virtual bool isConstructor(JSObject* obj) const override {
return flags(obj) & DeadObjectProxyIsConstructor;
}
virtual bool finalizeInBackground(const JS::Value& priv) const override {
return priv.toInt32() & DeadObjectProxyIsBackgroundFinalized;
}
static const DeadObjectProxy singleton;
static const char family;
private:
static int32_t flags(JSObject* obj) { return GetProxyPrivate(obj).toInt32(); }
};
bool IsDeadProxyObject(const JSObject* obj);
JS::Value DeadProxyTargetValue(JSObject* obj);
JSObject* NewDeadProxyObject(JSContext* cx, JSObject* origObj = nullptr);
} /* namespace js */
#endif /* proxy_DeadObjectProxy_h */
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