// Constructor call
public override IMember CreateInstance(IArgumentSet args)
{
var builtins = DeclaringModule.Interpreter.ModuleResolution.BuiltinsModule;
// Specializations
switch (Name)
{
case "list":
return(PythonCollectionType.CreateList(builtins, args));
case "dict": {
// self, then contents
var contents = args.Values <IMember>().Skip(1).FirstOrDefault();
return(new PythonDictionary(builtins, contents));
}
case "tuple": {
var contents = args.Values <IMember>();
return(PythonCollectionType.CreateTuple(builtins, contents));
}
}
// Metaclasses return type, not instance.
if (Bases.MaybeEnumerate().Any(b => b.Name == "type" && b.DeclaringModule.ModuleType == ModuleType.Builtins))
{
return(this);
}
return(new PythonInstance(this));
}
public override IMember Index(IPythonInstance instance, IArgumentSet args)
{
var defaultReturn = base.Index(instance, args);
var fromBases = Bases
.MaybeEnumerate()
.Select(b => b.Index(instance, args))
.Except(new[] { defaultReturn, UnknownType })
.FirstOrDefault();
return(fromBases ?? defaultReturn);
}
