The Tor Browser: js/ipc/JavaScriptParent.h@a63d609f5ebe

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     2  * vim: set ts=4 sw=4 et tw=80:

     3  *

     4  * This Source Code Form is subject to the terms of the Mozilla Public

     5  * License, v. 2.0. If a copy of the MPL was not distributed with this

     6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     8 #ifndef mozilla_jsipc_JavaScriptParent__

     9 #define mozilla_jsipc_JavaScriptParent__

    11 #include "JavaScriptShared.h"

    12 #include "mozilla/jsipc/PJavaScriptParent.h"

    13 #include "js/Class.h"

    15 #ifdef XP_WIN

    16 #undef GetClassName

    17 #undef GetClassInfo

    18 #endif

    20 namespace mozilla {

    21 namespace jsipc {

    23 class JavaScriptParent

    24   : public PJavaScriptParent,

    25     public JavaScriptShared

    26 {

    27   public:

    28     JavaScriptParent();

    30     bool init();

    32   public:

    33     // Fundamental proxy traps. These are required.

    34     // (The traps should be in the same order like js/src/jsproxy.h)

    35     bool preventExtensions(JSContext *cx, JS::HandleObject proxy);

    36     bool getPropertyDescriptor(JSContext *cx, JS::HandleObject proxy, JS::HandleId id,

    37                                JS::MutableHandle<JSPropertyDescriptor> desc);

    38     bool getOwnPropertyDescriptor(JSContext *cx, JS::HandleObject proxy, JS::HandleId id,

    39                                   JS::MutableHandle<JSPropertyDescriptor> desc);

    40     bool defineProperty(JSContext *cx, JS::HandleObject proxy, JS::HandleId id,

    41                         JS::MutableHandle<JSPropertyDescriptor> desc);

    42     bool getOwnPropertyNames(JSContext *cx, JS::HandleObject proxy, JS::AutoIdVector &props);

    43     bool delete_(JSContext *cx, JS::HandleObject proxy, JS::HandleId id, bool *bp);

    44     bool enumerate(JSContext *cx, JS::HandleObject proxy, JS::AutoIdVector &props);

    46     // Derived proxy traps. Implementing these is useful for perfomance.

    47     bool has(JSContext *cx, JS::HandleObject proxy, JS::HandleId id, bool *bp);

    48     bool hasOwn(JSContext *cx, JS::HandleObject proxy, JS::HandleId id, bool *bp);

    49     bool get(JSContext *cx, JS::HandleObject proxy, JS::HandleObject receiver,

    50              JS::HandleId id, JS::MutableHandleValue vp);

    51     bool set(JSContext *cx, JS::HandleObject proxy, JS::HandleObject receiver,

    52              JS::HandleId id, bool strict, JS::MutableHandleValue vp);

    53     bool keys(JSContext *cx, JS::HandleObject proxy, JS::AutoIdVector &props);

    54     // We use "iterate" provided by the base class here.

    56     // SpiderMonkey Extensions.

    57     bool isExtensible(JSContext *cx, JS::HandleObject proxy, bool *extensible);

    58     bool call(JSContext *cx, JS::HandleObject proxy, const JS::CallArgs &args);

    59     bool objectClassIs(JSContext *cx, JS::HandleObject obj, js::ESClassValue classValue);

    60     const char* className(JSContext *cx, JS::HandleObject proxy);

    62     virtual void ActorDestroy(ActorDestroyReason why);

    64     void decref();

    65     void incref();

    67     bool active() { return !inactive_; }

    69     void drop(JSObject *obj);

    71     static bool IsCPOW(JSObject *obj);

    73     static nsresult InstanceOf(JSObject *obj, const nsID *id, bool *bp);

    74     nsresult instanceOf(JSObject *obj, const nsID *id, bool *bp);

    76     /*

    77      * Check that |obj| is a DOM wrapper whose prototype chain contains

    78      * |prototypeID| at depth |depth|.

    79      */

    80     static bool DOMInstanceOf(JSContext *cx, JSObject *obj, int prototypeID, int depth, bool *bp);

    81     bool domInstanceOf(JSContext *cx, JSObject *obj, int prototypeID, int depth, bool *bp);

    83     mozilla::ipc::IProtocol*

    84     CloneProtocol(Channel* aChannel, ProtocolCloneContext* aCtx) MOZ_OVERRIDE;

    86   protected:

    87     JSObject *unwrap(JSContext *cx, ObjectId objId);

    89   private:

    90     bool makeId(JSContext *cx, JSObject *obj, ObjectId *idp);

    91     bool getPropertyNames(JSContext *cx, JS::HandleObject proxy, uint32_t flags,

    92                           JS::AutoIdVector &props);

    93     ObjectId idOf(JSObject *obj);

    95     // Catastrophic IPC failure.

    96     bool ipcfail(JSContext *cx);

    98     // Check whether a return status is okay, and if not, propagate its error.

    99     bool ok(JSContext *cx, const ReturnStatus &status);

   101   private:

   102     uintptr_t refcount_;

   103     bool inactive_;

   104 };

   106 } // jsipc

   107 } // mozilla

   109 #endif // mozilla_jsipc_JavaScriptWrapper_h__

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