int JavaObject::getObjectId(JSContext* ctx, JSObject* obj) {
jsval val;
const JSClass* jsClass = JS_GET_CLASS(ctx, obj);
if (jsClass != &JavaObjectClass) {
Debug::log(Debug::Error)
<< "JavaObject::getObjectId called on non-JavaObject: " << jsClass->name
<< Debug::flush;
return -1;
}
if (JSCLASS_RESERVED_SLOTS(jsClass) < 1) {
Debug::log(Debug::Error)
<< "JavaObject::getObjectId -- " << static_cast<void*>(obj)
<< " has only " << (JSCLASS_RESERVED_SLOTS(jsClass))
<< " reserved slots, no objectId present" << Debug::flush;
return -1;
}
#if GECKO_VERSION >= 13000
val = JS_GetReservedSlot(obj, 0);
#else
if (!JS_GetReservedSlot(ctx, obj, 0, &val)) {
Debug::log(Debug::Error) << "Error getting reserved slot" << Debug::flush;
return -1;
}
#endif
// TODO: assert JSVAL_IS_INT(val)
return JSVAL_TO_INT(val);
}
static JSObject* FindNamedConstructorForXray(
JSContext* aCx, JS::Handle<jsid> aId, const WebIDLNameTableEntry* aEntry) {
JSObject* interfaceObject =
GetPerInterfaceObjectHandle(aCx, aEntry->mConstructorId, aEntry->mCreate,
/* aDefineOnGlobal = */ false);
if (!interfaceObject) {
return nullptr;
}
// This is a call over Xrays, so we will actually use the return value
// (instead of just having it defined on the global now). Check for named
// constructors with this id, in case that's what the caller is asking for.
for (unsigned slot = DOM_INTERFACE_SLOTS_BASE;
slot < JSCLASS_RESERVED_SLOTS(js::GetObjectClass(interfaceObject));
++slot) {
JSObject* constructor =
&js::GetReservedSlot(interfaceObject, slot).toObject();
if (JS_GetFunctionId(JS_GetObjectFunction(constructor)) ==
JSID_TO_STRING(aId)) {
return constructor;
}
}
// None of the named constructors match, so the caller must want the
// interface object itself.
return interfaceObject;
}
