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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 */