/* PRBool resolve (in nsIXPConnectWrappedNative wrapper, in JSContextPtr cx, in JSObjectPtr obj, in jsval id); */
NS_IMETHODIMP
nsJSIID::NewResolve(nsIXPConnectWrappedNative *wrapper,
JSContext * cx, JSObject * obj,
jsid id, PRUint32 flags,
JSObject * *objp, PRBool *_retval)
{
XPCCallContext ccx(JS_CALLER, cx);
AutoMarkingNativeInterfacePtr iface(ccx);
const nsIID* iid;
mInfo->GetIIDShared(&iid);
iface = XPCNativeInterface::GetNewOrUsed(ccx, iid);
if(!iface)
return NS_OK;
XPCNativeMember* member = iface->FindMember(id);
if(member && member->IsConstant())
{
jsval val;
if(!member->GetConstantValue(ccx, iface, &val))
return NS_ERROR_OUT_OF_MEMORY;
*objp = obj;
*_retval = JS_DefinePropertyById(cx, obj, id, val, nsnull, nsnull,
JSPROP_ENUMERATE | JSPROP_READONLY |
JSPROP_PERMANENT);
}
return NS_OK;
}
NS_IMETHODIMP
nsJSIID::Resolve(nsIXPConnectWrappedNative* wrapper,
JSContext * cx, JSObject * objArg,
jsid idArg, bool* resolvedp,
bool* _retval)
{
RootedObject obj(cx, objArg);
RootedId id(cx, idArg);
XPCCallContext ccx(JS_CALLER, cx);
AutoMarkingNativeInterfacePtr iface(ccx);
iface = XPCNativeInterface::GetNewOrUsed(mInfo);
if (!iface)
return NS_OK;
XPCNativeMember* member = iface->FindMember(id);
if (member && member->IsConstant()) {
RootedValue val(cx);
if (!member->GetConstantValue(ccx, iface, val.address()))
return NS_ERROR_OUT_OF_MEMORY;
*resolvedp = true;
*_retval = JS_DefinePropertyById(cx, obj, id, val,
JSPROP_ENUMERATE | JSPROP_READONLY |
JSPROP_PERMANENT | JSPROP_RESOLVING);
}
return NS_OK;
}
static bool
ResolveNativeProperty(JSContext *cx, JSObject *wrapper, JSObject *holder, jsid id, bool set,
JSPropertyDescriptor *desc)
{
desc->obj = NULL;
NS_ASSERTION(holder->getJSClass() == &HolderClass, "expected a native property holder object");
JSObject *wnObject = GetWrappedNativeObjectFromHolder(holder);
XPCWrappedNative *wn = GetWrappedNative(wnObject);
// This will do verification and the method lookup for us.
XPCCallContext ccx(JS_CALLER, cx, wnObject, nsnull, id);
// There are no native numeric properties, so we can shortcut here. We will not
// find the property.
if (!JSID_IS_ATOM(id)) {
/* Not found */
return true;
}
XPCNativeInterface *iface;
XPCNativeMember *member;
if (ccx.GetWrapper() != wn ||
!wn->IsValid() ||
!(iface = ccx.GetInterface()) ||
!(member = ccx.GetMember())) {
/* Not found */
return true;
}
desc->obj = holder;
desc->attrs = JSPROP_ENUMERATE;
desc->getter = NULL;
desc->setter = NULL;
desc->shortid = 0;
desc->value = JSVAL_VOID;
jsval fval = JSVAL_VOID;
if (member->IsConstant()) {
if (!member->GetConstantValue(ccx, iface, &desc->value)) {
JS_ReportError(cx, "Failed to convert constant native property to JS value");
return false;
}
} else if (member->IsAttribute()) {
// This is a getter/setter. Clone a function for it.
if (!member->NewFunctionObject(ccx, iface, wrapper, &fval)) {
JS_ReportError(cx, "Failed to clone function object for native getter/setter");
return false;
}
desc->attrs |= JSPROP_GETTER;
if (member->IsWritableAttribute())
desc->attrs |= JSPROP_SETTER;
// Make the property shared on the holder so no slot is allocated
// for it. This avoids keeping garbage alive through that slot.
desc->attrs |= JSPROP_SHARED;
} else {
// This is a method. Clone a function for it.
if (!member->NewFunctionObject(ccx, iface, wrapper, &desc->value)) {
JS_ReportError(cx, "Failed to clone function object for native function");
return false;
}
// Without a wrapper the function would live on the prototype. Since we
// don't have one, we have to avoid calling the scriptable helper's
// GetProperty method for this property, so stub out the getter and
// setter here explicitly.
desc->getter = JS_PropertyStub;
desc->setter = JS_StrictPropertyStub;
}
if (!JS_WrapValue(cx, &desc->value) || !JS_WrapValue(cx, &fval))
return false;
if (desc->attrs & JSPROP_GETTER)
desc->getter = CastAsJSPropertyOp(JSVAL_TO_OBJECT(fval));
if (desc->attrs & JSPROP_SETTER)
desc->setter = CastAsJSStrictPropertyOp(JSVAL_TO_OBJECT(fval));
// Define the property.
return JS_DefinePropertyById(cx, holder, id, desc->value,
desc->getter, desc->setter, desc->attrs);
}