public override Type GetTypesToExtend(out IList <Type> interfacesToExtend)
{
interfacesToExtend = new List <Type>();
foreach (object b in bases)
{
if (b is OldClass)
{
continue;
}
PythonType baseType = b as PythonType;
IList <Type> baseTypeInterfaces;
baseType.GetTypesToExtend(out baseTypeInterfaces);
foreach (Type baseTypeInterface in baseTypeInterfaces)
{
interfacesToExtend.Add(baseTypeInterface);
}
}
// We dont use type.GetInterfaces() as it contains all the interfaces that are added by NewTypeMaker,
// as well as all the interfaces implemented by type.BaseType. Instead, we only want the new set of
// interfaces that need to be implemented by the new instance type.
Debug.Assert(interfacesToExtend.Count < type.GetInterfaces().Length);
// "type" is the instance type used for instances of this type. This will be a type created by NewTypeMaker.
Debug.Assert(NewTypeMaker.IsInstanceType(type));
// Its BaseType will the CLI type that needs to be inherited by instance types used by other UserTypes inheriting
// from the current UserType. For pure Python types, this will be System.Object.
Debug.Assert(!NewTypeMaker.IsInstanceType(type.BaseType));
return(type.BaseType);
}
