Issue #1257 - Part1: Remove watch class-hook and proxy trap.

12 files changed, 2 insertions, 102 deletions

diff --git a/js/public/Class.h b/js/public/Class.h
index 3b5023875..f7533654b 100644
--- a/js/public/Class.h
+++ b/js/public/Class.h
@@ -425,12 +425,6 @@ typedef bool
 (* DeletePropertyOp)(JSContext* cx, JS::HandleObject obj, JS::HandleId id,
                      JS::ObjectOpResult& result);
 
-typedef bool
-(* WatchOp)(JSContext* cx, JS::HandleObject obj, JS::HandleId id, JS::HandleObject callable);
-
-typedef bool
-(* UnwatchOp)(JSContext* cx, JS::HandleObject obj, JS::HandleId id);
-
 class JS_FRIEND_API(ElementAdder)
 {
   public:
@@ -670,8 +664,6 @@ struct ObjectOps
     SetPropertyOp    setProperty;
     GetOwnPropertyOp getOwnPropertyDescriptor;
     DeletePropertyOp deleteProperty;
-    WatchOp          watch;
-    UnwatchOp        unwatch;
     GetElementsOp    getElements;
     JSNewEnumerateOp enumerate;
     JSFunToStringOp  funToString;
@@ -822,8 +814,8 @@ struct Class
      * Objects of this class aren't native objects. They don't have Shapes that
      * describe their properties and layout. Classes using this flag must
      * provide their own property behavior, either by being proxy classes (do
-     * this) or by overriding all the ObjectOps except getElements, watch and
-     * unwatch (don't do this).
+     * this) or by overriding all the ObjectOps except getElements
+     * (don't do this).
      */
     static const uint32_t NON_NATIVE = JSCLASS_INTERNAL_FLAG2;
 
@@ -900,8 +892,6 @@ struct Class
                                             const { return oOps ? oOps->getOwnPropertyDescriptor
                                                                                      : nullptr; }
     DeletePropertyOp getOpsDeleteProperty() const { return oOps ? oOps->deleteProperty : nullptr; }
-    WatchOp          getOpsWatch()          const { return oOps ? oOps->watch          : nullptr; }
-    UnwatchOp        getOpsUnwatch()        const { return oOps ? oOps->unwatch        : nullptr; }
     GetElementsOp    getOpsGetElements()    const { return oOps ? oOps->getElements    : nullptr; }
     JSNewEnumerateOp getOpsEnumerate()      const { return oOps ? oOps->enumerate      : nullptr; }
     JSFunToStringOp  getOpsFunToString()    const { return oOps ? oOps->funToString    : nullptr; }
diff --git a/js/public/Proxy.h b/js/public/Proxy.h
index 5acb91b26..f40772fb0 100644
--- a/js/public/Proxy.h
+++ b/js/public/Proxy.h
@@ -341,12 +341,6 @@ class JS_FRIEND_API(BaseProxyHandler)
     virtual bool isCallable(JSObject* obj) const;
     virtual bool isConstructor(JSObject* obj) const;
 
-    // These two hooks must be overridden, or not overridden, in tandem -- no
-    // overriding just one!
-    virtual bool watch(JSContext* cx, JS::HandleObject proxy, JS::HandleId id,
-                       JS::HandleObject callable) const;
-    virtual bool unwatch(JSContext* cx, JS::HandleObject proxy, JS::HandleId id) const;
-
     virtual bool getElements(JSContext* cx, HandleObject proxy, uint32_t begin, uint32_t end,
                              ElementAdder* adder) const;
 
diff --git a/js/src/builtin/TypedObject.cpp b/js/src/builtin/TypedObject.cpp
index ff3680774..50bf0b836 100644
--- a/js/src/builtin/TypedObject.cpp
+++ b/js/src/builtin/TypedObject.cpp
@@ -2215,7 +2215,6 @@ const ObjectOps TypedObject::objectOps_ = {
     TypedObject::obj_setProperty,
     TypedObject::obj_getOwnPropertyDescriptor,
     TypedObject::obj_deleteProperty,
-    nullptr, nullptr, /* watch/unwatch */
     nullptr,   /* getElements */
     TypedObject::obj_enumerate,
     nullptr, /* thisValue */
diff --git a/js/src/jsobj.cpp b/js/src/jsobj.cpp
index 6f9596924..ee66addc9 100644
--- a/js/src/jsobj.cpp
+++ b/js/src/jsobj.cpp
@@ -2836,9 +2836,6 @@ js::UnwatchGuts(JSContext* cx, JS::HandleObject origObj, JS::HandleId id)
 bool
 js::WatchProperty(JSContext* cx, HandleObject obj, HandleId id, HandleObject callable)
 {
-    if (WatchOp op = obj->getOpsWatch())
-        return op(cx, obj, id, callable);
-
     if (!obj->isNative() || obj->is<TypedArrayObject>()) {
         JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_CANT_WATCH,
                                   obj->getClass()->name);
@@ -2851,9 +2848,6 @@ js::WatchProperty(JSContext* cx, HandleObject obj, HandleId id, HandleObject cal
 bool
 js::UnwatchProperty(JSContext* cx, HandleObject obj, HandleId id)
 {
-    if (UnwatchOp op = obj->getOpsUnwatch())
-        return op(cx, obj, id);
-
     return UnwatchGuts(cx, obj, id);
 }
 
diff --git a/js/src/jsobj.h b/js/src/jsobj.h
index db2c22b76..8a41d155e 100644
--- a/js/src/jsobj.h
+++ b/js/src/jsobj.h
@@ -141,8 +141,6 @@ class JSObject : public js::gc::Cell
     js::GetOwnPropertyOp getOpsGetOwnPropertyDescriptor()
                                                 const { return getClass()->getOpsGetOwnPropertyDescriptor(); }
     js::DeletePropertyOp getOpsDeleteProperty() const { return getClass()->getOpsDeleteProperty(); }
-    js::WatchOp          getOpsWatch()          const { return getClass()->getOpsWatch(); }
-    js::UnwatchOp        getOpsUnwatch()        const { return getClass()->getOpsUnwatch(); }
     js::GetElementsOp    getOpsGetElements()    const { return getClass()->getOpsGetElements(); }
     JSNewEnumerateOp     getOpsEnumerate()      const { return getClass()->getOpsEnumerate(); }
     JSFunToStringOp      getOpsFunToString()    const { return getClass()->getOpsFunToString(); }
diff --git a/js/src/jswrapper.h b/js/src/jswrapper.h
index 5f3704e32..32336c68b 100644
--- a/js/src/jswrapper.h
+++ b/js/src/jswrapper.h
@@ -315,13 +315,6 @@ class JS_FRIEND_API(SecurityWrapper) : public Base
     virtual bool regexp_toShared(JSContext* cx, HandleObject proxy, RegExpGuard* g) const override;
     virtual bool boxedValue_unbox(JSContext* cx, HandleObject proxy, MutableHandleValue vp) const override;
 
-    // Allow isCallable and isConstructor. They used to be class-level, and so could not be guarded
-    // against.
-
-    virtual bool watch(JSContext* cx, JS::HandleObject proxy, JS::HandleId id,
-                       JS::HandleObject callable) const override;
-    virtual bool unwatch(JSContext* cx, JS::HandleObject proxy, JS::HandleId id) const override;
-
     /*
      * Allow our subclasses to select the superclass behavior they want without
      * needing to specify an exact superclass.
diff --git a/js/src/proxy/BaseProxyHandler.cpp b/js/src/proxy/BaseProxyHandler.cpp
index 8d5f30a19..423aa8671 100644
--- a/js/src/proxy/BaseProxyHandler.cpp
+++ b/js/src/proxy/BaseProxyHandler.cpp
@@ -419,20 +419,6 @@ BaseProxyHandler::setImmutablePrototype(JSContext* cx, HandleObject proxy, bool*
 }
 
 bool
-BaseProxyHandler::watch(JSContext* cx, HandleObject proxy, HandleId id, HandleObject callable) const
-{
-    JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_CANT_WATCH,
-                              proxy->getClass()->name);
-    return false;
-}
-
-bool
-BaseProxyHandler::unwatch(JSContext* cx, HandleObject proxy, HandleId id) const
-{
-    return true;
-}
-
-bool
 BaseProxyHandler::getElements(JSContext* cx, HandleObject proxy, uint32_t begin, uint32_t end,
                               ElementAdder* adder) const
 {
diff --git a/js/src/proxy/Proxy.cpp b/js/src/proxy/Proxy.cpp
index 2c1cffb77..6b3a3d1e9 100644
--- a/js/src/proxy/Proxy.cpp
+++ b/js/src/proxy/Proxy.cpp
@@ -505,20 +505,6 @@ Proxy::boxedValue_unbox(JSContext* cx, HandleObject proxy, MutableHandleValue vp
 JSObject * const TaggedProto::LazyProto = reinterpret_cast<JSObject*>(0x1);
 
 /* static */ bool
-Proxy::watch(JSContext* cx, JS::HandleObject proxy, JS::HandleId id, JS::HandleObject callable)
-{
-    JS_CHECK_RECURSION(cx, return false);
-    return proxy->as<ProxyObject>().handler()->watch(cx, proxy, id, callable);
-}
-
-/* static */ bool
-Proxy::unwatch(JSContext* cx, JS::HandleObject proxy, JS::HandleId id)
-{
-    JS_CHECK_RECURSION(cx, return false);
-    return proxy->as<ProxyObject>().handler()->unwatch(cx, proxy, id);
-}
-
-/* static */ bool
 Proxy::getElements(JSContext* cx, HandleObject proxy, uint32_t begin, uint32_t end,
                    ElementAdder* adder)
 {
@@ -699,18 +685,6 @@ js::proxy_Construct(JSContext* cx, unsigned argc, Value* vp)
 }
 
 bool
-js::proxy_Watch(JSContext* cx, HandleObject obj, HandleId id, HandleObject callable)
-{
-    return Proxy::watch(cx, obj, id, callable);
-}
-
-bool
-js::proxy_Unwatch(JSContext* cx, HandleObject obj, HandleId id)
-{
-    return Proxy::unwatch(cx, obj, id);
-}
-
-bool
 js::proxy_GetElements(JSContext* cx, HandleObject proxy, uint32_t begin, uint32_t end,
                       ElementAdder* adder)
 {
@@ -750,7 +724,6 @@ const ObjectOps js::ProxyObjectOps = {
     js::proxy_SetProperty,
     js::proxy_GetOwnPropertyDescriptor,
     js::proxy_DeleteProperty,
-    js::proxy_Watch, js::proxy_Unwatch,
     js::proxy_GetElements,
     nullptr,  /* enumerate */
     js::proxy_FunToString
diff --git a/js/src/proxy/Proxy.h b/js/src/proxy/Proxy.h
index 89909a085..4a8ecf8ab 100644
--- a/js/src/proxy/Proxy.h
+++ b/js/src/proxy/Proxy.h
@@ -65,9 +65,6 @@ class Proxy
     static bool regexp_toShared(JSContext* cx, HandleObject proxy, RegExpGuard* g);
     static bool boxedValue_unbox(JSContext* cx, HandleObject proxy, MutableHandleValue vp);
 
-    static bool watch(JSContext* cx, HandleObject proxy, HandleId id, HandleObject callable);
-    static bool unwatch(JSContext* cx, HandleObject proxy, HandleId id);
-
     static bool getElements(JSContext* cx, HandleObject obj, uint32_t begin, uint32_t end,
                             ElementAdder* adder);
 
diff --git a/js/src/proxy/SecurityWrapper.cpp b/js/src/proxy/SecurityWrapper.cpp
index 710faf9b0..71d22fca6 100644
--- a/js/src/proxy/SecurityWrapper.cpp
+++ b/js/src/proxy/SecurityWrapper.cpp
@@ -130,24 +130,5 @@ SecurityWrapper<Base>::defineProperty(JSContext* cx, HandleObject wrapper, Handl
     return Base::defineProperty(cx, wrapper, id, desc, result);
 }
 
-template <class Base>
-bool
-SecurityWrapper<Base>::watch(JSContext* cx, HandleObject proxy,
-                             HandleId id, HandleObject callable) const
-{
-    ReportUnwrapDenied(cx);
-    return false;
-}
-
-template <class Base>
-bool
-SecurityWrapper<Base>::unwatch(JSContext* cx, HandleObject proxy,
-                               HandleId id) const
-{
-    ReportUnwrapDenied(cx);
-    return false;
-}
-
-
 template class js::SecurityWrapper<Wrapper>;
 template class js::SecurityWrapper<CrossCompartmentWrapper>;
diff --git a/js/src/vm/EnvironmentObject.cpp b/js/src/vm/EnvironmentObject.cpp
index a5aac2ab4..3680c5b7b 100644
--- a/js/src/vm/EnvironmentObject.cpp
+++ b/js/src/vm/EnvironmentObject.cpp
@@ -408,7 +408,6 @@ const ObjectOps ModuleEnvironmentObject::objectOps_ = {
     ModuleEnvironmentObject::setProperty,
     ModuleEnvironmentObject::getOwnPropertyDescriptor,
     ModuleEnvironmentObject::deleteProperty,
-    nullptr, nullptr,                                    /* watch/unwatch */
     nullptr,                                             /* getElements */
     ModuleEnvironmentObject::enumerate,
     nullptr
@@ -790,7 +789,6 @@ static const ObjectOps WithEnvironmentObjectOps = {
     with_SetProperty,
     with_GetOwnPropertyDescriptor,
     with_DeleteProperty,
-    nullptr, nullptr,    /* watch/unwatch */
     nullptr,             /* getElements */
     nullptr,             /* enumerate (native enumeration of target doesn't work) */
     nullptr,
@@ -1159,7 +1157,6 @@ static const ObjectOps RuntimeLexicalErrorObjectObjectOps = {
     lexicalError_SetProperty,
     lexicalError_GetOwnPropertyDescriptor,
     lexicalError_DeleteProperty,
-    nullptr, nullptr,    /* watch/unwatch */
     nullptr,             /* getElements */
     nullptr,             /* enumerate (native enumeration of target doesn't work) */
     nullptr,             /* this */
diff --git a/js/xpconnect/src/XPCWrappedNativeJSOps.cpp b/js/xpconnect/src/XPCWrappedNativeJSOps.cpp
index 12b203b70..08ba8241a 100644
--- a/js/xpconnect/src/XPCWrappedNativeJSOps.cpp
+++ b/js/xpconnect/src/XPCWrappedNativeJSOps.cpp
@@ -924,8 +924,6 @@ const js::ObjectOps XPC_WN_ObjectOpsWithEnumerate = {
     nullptr,  // setProperty
     nullptr,  // getOwnPropertyDescriptor
     nullptr,  // deleteProperty
-    nullptr,  // watch
-    nullptr,  // unwatch
     nullptr,  // getElements
     XPC_WN_JSOp_Enumerate,
     nullptr,  // funToString