1 files changed, 115 insertions, 0 deletions
diff --git a/js/src/proxy/ScriptedProxyHandler.h b/js/src/proxy/ScriptedProxyHandler.h
new file mode 100644
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+++ b/js/src/proxy/ScriptedProxyHandler.h
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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_ScriptedProxyHandler_h
+#define proxy_ScriptedProxyHandler_h
+
+#include "js/Proxy.h"
+
+namespace js {
+
+/* Derived class for all scripted proxy handlers. */
+class ScriptedProxyHandler : public BaseProxyHandler {
+ public:
+  constexpr ScriptedProxyHandler() : BaseProxyHandler(&family) {}
+
+  /* Standard internal methods. */
+  virtual bool getOwnPropertyDescriptor(
+      JSContext* cx, JS::HandleObject proxy, JS::HandleId id,
+      JS::MutableHandle<mozilla::Maybe<JS::PropertyDescriptor>> desc)
+      const override;
+  virtual bool defineProperty(JSContext* cx, JS::HandleObject proxy,
+                              JS::HandleId id,
+                              JS::Handle<JS::PropertyDescriptor> desc,
+                              JS::ObjectOpResult& result) const override;
+  virtual bool ownPropertyKeys(JSContext* cx, JS::HandleObject proxy,
+                               JS::MutableHandleIdVector props) const override;
+  virtual bool delete_(JSContext* cx, JS::HandleObject proxy, JS::HandleId id,
+                       JS::ObjectOpResult& result) const override;
+
+  virtual bool getPrototype(JSContext* cx, JS::HandleObject proxy,
+                            JS::MutableHandleObject protop) const override;
+  virtual bool setPrototype(JSContext* cx, JS::HandleObject proxy,
+                            JS::HandleObject proto,
+                            JS::ObjectOpResult& result) const override;
+  /* Non-standard, but needed to correctly implement OrdinaryGetPrototypeOf. */
+  virtual bool getPrototypeIfOrdinary(
+      JSContext* cx, JS::HandleObject proxy, bool* isOrdinary,
+      JS::MutableHandleObject protop) const override;
+  /* Non-standard, but needed to handle revoked proxies. */
+  virtual bool setImmutablePrototype(JSContext* cx, JS::HandleObject proxy,
+                                     bool* succeeded) 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 has(JSContext* cx, JS::HandleObject proxy, JS::HandleId id,
+                   bool* bp) const override;
+  virtual bool get(JSContext* cx, JS::HandleObject proxy,
+                   JS::HandleValue receiver, JS::HandleId id,
+                   JS::MutableHandleValue vp) const override;
+  virtual bool set(JSContext* cx, JS::HandleObject proxy, JS::HandleId id,
+                   JS::HandleValue v, JS::HandleValue receiver,
+                   JS::ObjectOpResult& result) 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. */
+  virtual bool hasOwn(JSContext* cx, JS::HandleObject proxy, JS::HandleId id,
+                      bool* bp) const override {
+    return BaseProxyHandler::hasOwn(cx, proxy, id, bp);
+  }
+
+  // A scripted proxy should not be treated as generic in most contexts.
+  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;
+  virtual bool boxedValue_unbox(JSContext* cx, JS::HandleObject proxy,
+                                JS::MutableHandleValue vp) const override;
+
+  virtual bool isCallable(JSObject* obj) const override;
+  virtual bool isConstructor(JSObject* obj) const override;
+
+  virtual bool isScripted() const override { return true; }
+
+  static const char family;
+  static const ScriptedProxyHandler singleton;
+
+  // The "proxy extra" slot index in which the handler is stored. Revocable
+  // proxies need to set this at revocation time.
+  static const int HANDLER_EXTRA = 0;
+  static const int IS_CALLCONSTRUCT_EXTRA = 1;
+  // Bitmasks for the "call/construct" slot
+  static const int IS_CALLABLE = 1 << 0;
+  static const int IS_CONSTRUCTOR = 1 << 1;
+  // The "function extended" slot index in which the revocation object is
+  // stored. Per spec, this is to be cleared during the first revocation.
+  static const int REVOKE_SLOT = 0;
+
+  static JSObject* handlerObject(const JSObject* proxy);
+};
+
+bool proxy(JSContext* cx, unsigned argc, JS::Value* vp);
+
+bool proxy_revocable(JSContext* cx, unsigned argc, JS::Value* vp);
+
+} /* namespace js */
+
+#endif /* proxy_ScriptedProxyHandler_h */