/* bool hasInstance (in nsIXPConnectWrappedNative wrapper, in JSContextPtr cx, in JSObjectPtr obj, in jsval val, out bool bp); */
NS_IMETHODIMP
nsJSCID::HasInstance(nsIXPConnectWrappedNative *wrapper,
JSContext * cx, JSObject * obj,
const jsval &val, bool *bp, bool *_retval)
{
*bp = false;
nsresult rv = NS_OK;
if (!JSVAL_IS_PRIMITIVE(val)) {
// we have a JSObject
JSObject* obj = JSVAL_TO_OBJECT(val);
NS_ASSERTION(obj, "when is an object not an object?");
// is this really a native xpcom object with a wrapper?
JSObject* obj2;
XPCWrappedNative* other_wrapper =
XPCWrappedNative::GetWrappedNativeOfJSObject(cx, obj, nsnull, &obj2);
if (!other_wrapper && !obj2)
return NS_OK;
nsIClassInfo* ci = other_wrapper ?
other_wrapper->GetClassInfo() :
GetSlimWrapperProto(obj2)->GetClassInfo();
// We consider CID equality to be the thing that matters here.
// This is perhaps debatable.
if (ci) {
nsID cid;
if (NS_SUCCEEDED(ci->GetClassIDNoAlloc(&cid)))
*bp = cid.Equals(mDetails.ID());
}
}
return rv;
}
/* PRBool hasInstance (in nsIXPConnectWrappedNative wrapper, in JSContextPtr cx, in JSObjectPtr obj, in jsval val, out PRBool bp); */
NS_IMETHODIMP
nsJSIID::HasInstance(nsIXPConnectWrappedNative *wrapper,
JSContext * cx, JSObject * obj,
const jsval &val, PRBool *bp, PRBool *_retval)
{
*bp = JS_FALSE;
nsresult rv = NS_OK;
if(!JSVAL_IS_PRIMITIVE(val))
{
// we have a JSObject
JSObject* obj = JSVAL_TO_OBJECT(val);
NS_ASSERTION(obj, "when is an object not an object?");
// is this really a native xpcom object with a wrapper?
const nsIID* iid;
mInfo->GetIIDShared(&iid);
if(IS_SLIM_WRAPPER(obj))
{
XPCWrappedNativeProto* proto = GetSlimWrapperProto(obj);
if(proto->GetSet()->HasInterfaceWithAncestor(iid))
{
*bp = JS_TRUE;
return NS_OK;
}
#ifdef DEBUG_slimwrappers
char foo[NSID_LENGTH];
iid->ToProvidedString(foo);
SLIM_LOG_WILL_MORPH_FOR_PROP(cx, obj, foo);
#endif
if(!MorphSlimWrapper(cx, obj))
return NS_ERROR_FAILURE;
}
XPCWrappedNative* other_wrapper =
XPCWrappedNative::GetWrappedNativeOfJSObject(cx, obj);
if(!other_wrapper)
return NS_OK;
// We'll trust the interface set of the wrapper if this is known
// to be an interface that the objects *expects* to be able to
// handle.
if(other_wrapper->HasInterfaceNoQI(*iid))
{
*bp = JS_TRUE;
return NS_OK;
}
// Otherwise, we'll end up Querying the native object to be sure.
XPCCallContext ccx(JS_CALLER, cx);
AutoMarkingNativeInterfacePtr iface(ccx);
iface = XPCNativeInterface::GetNewOrUsed(ccx, iid);
if(iface && other_wrapper->FindTearOff(ccx, iface))
*bp = JS_TRUE;
}
return rv;
}
/* bool hasInstance (in nsIXPConnectWrappedNative wrapper, in JSContextPtr cx, in JSObjectPtr obj, in jsval val, out bool bp); */
NS_IMETHODIMP
nsJSIID::HasInstance(nsIXPConnectWrappedNative *wrapper,
JSContext * cx, JSObject * obj,
const jsval &val, bool *bp, bool *_retval)
{
*bp = false;
nsresult rv = NS_OK;
if (!JSVAL_IS_PRIMITIVE(val)) {
// we have a JSObject
JSObject* obj = JSVAL_TO_OBJECT(val);
NS_ASSERTION(obj, "when is an object not an object?");
// is this really a native xpcom object with a wrapper?
const nsIID* iid;
mInfo->GetIIDShared(&iid);
if (IS_SLIM_WRAPPER(obj)) {
XPCWrappedNativeProto* proto = GetSlimWrapperProto(obj);
if (proto->GetSet()->HasInterfaceWithAncestor(iid)) {
*bp = true;
return NS_OK;
}
#ifdef DEBUG_slimwrappers
char foo[NSID_LENGTH];
iid->ToProvidedString(foo);
SLIM_LOG_WILL_MORPH_FOR_PROP(cx, obj, foo);
#endif
if (!MorphSlimWrapper(cx, obj))
return NS_ERROR_FAILURE;
}
nsISupports *identity;
if (mozilla::dom::binding::instanceIsProxy(obj)) {
identity =
static_cast<nsISupports*>(js::GetProxyPrivate(obj).toPrivate());
} else if (mozilla::dom::bindings::IsDOMClass(js::GetObjectJSClass(obj))) {
NS_ASSERTION(mozilla::dom::bindings::DOMJSClass::FromJSClass(
js::GetObjectJSClass(obj))->mDOMObjectIsISupports,
"This only works on nsISupports classes!");
identity =
mozilla::dom::bindings::UnwrapDOMObject<nsISupports>(obj,
js::GetObjectJSClass(obj));
} else {
identity = nsnull;
}
if (identity) {
nsCOMPtr<nsIClassInfo> ci = do_QueryInterface(identity);
XPCCallContext ccx(JS_CALLER, cx);
AutoMarkingNativeSetPtr set(ccx);
set = XPCNativeSet::GetNewOrUsed(ccx, ci);
if (!set)
return NS_ERROR_FAILURE;
*bp = set->HasInterfaceWithAncestor(iid);
return NS_OK;
}
XPCWrappedNative* other_wrapper =
XPCWrappedNative::GetWrappedNativeOfJSObject(cx, obj);
if (!other_wrapper)
return NS_OK;
// We'll trust the interface set of the wrapper if this is known
// to be an interface that the objects *expects* to be able to
// handle.
if (other_wrapper->HasInterfaceNoQI(*iid)) {
*bp = true;
return NS_OK;
}
// Otherwise, we'll end up Querying the native object to be sure.
XPCCallContext ccx(JS_CALLER, cx);
AutoMarkingNativeInterfacePtr iface(ccx);
iface = XPCNativeInterface::GetNewOrUsed(ccx, iid);
nsresult findResult = NS_OK;
if (iface && other_wrapper->FindTearOff(ccx, iface, false, &findResult))
*bp = true;
if (NS_FAILED(findResult) && findResult != NS_ERROR_NO_INTERFACE)
rv = findResult;
}
return rv;
}
