Hi,
Here's some code from jsproxy.h:
inline bool IsObjectProxyClass(const Class *clasp)
{
return clasp == &js::ObjectProxyClass || clasp ==
&js::OuterWindowProxyClass;
}
inline bool IsFunctionProxyClass(const Class *clasp)
{
return clasp == &js::FunctionProxyClass;
}
inline bool IsProxy(JSObject *obj)
{
Class *clasp = GetObjectClass(obj);
return IsObjectProxyClass(clasp) || IsFunctionProxyClass(clasp);
}
So... IsProxy() succeeds if an object has one of the following
classes: FunctionProxyClass, ObjectProxyClass, OuterWindowProxyClass.
However, it fails if the object's class is ProxyClass. This is...
surprising. Is it a bug?
If I try changing IsProxy() to allow ProxyClass I get assertion failures.
There's a similar case in jsfriendapi.h where ProxyClass is ignored:
inline bool
GetObjectProto(JSContext *cx, JS::Handle<JSObject*> obj,
JS::MutableHandle<JSObject*> proto)
{
// njn: hmm
js::Class *clasp = GetObjectClass(obj);
if (clasp == &js::ObjectProxyClass ||
clasp == &js::OuterWindowProxyClass ||
clasp == &js::FunctionProxyClass)
{
return JS_GetPrototype(cx, obj, proto.address());
}
Nick
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