private static PythonDictionary?GetInitializedSlotValues(object obj)
{
PythonDictionary initializedSlotValues = new PythonDictionary();
IList <PythonType> mro = DynamicHelpers.GetPythonType(obj).ResolutionOrder;
foreach (object type in mro)
{
if (PythonOps.TryGetBoundAttr(type, "__slots__", out object?slots))
{
List <string> slotNames = PythonType.SlotsToList(slots);
foreach (string slotName in slotNames)
{
if (slotName == "__dict__")
{
continue;
}
// don't reassign same-named slots from types earlier in the MRO
if (initializedSlotValues.__contains__(slotName))
{
continue;
}
if (PythonOps.TryGetBoundAttr(obj, slotName, out object?slotValue))
{
initializedSlotValues[slotName] = slotValue;
}
}
}
}
if (initializedSlotValues.Count == 0)
{
return(null);
}
return(initializedSlotValues);
}