/// <summary>
/// Execute the element by accepting the index of execution.
/// index of execution may differ on IndexInParentSequence.
/// </summary>
/// <param name="executionIndex">The real calling index.</param>
/// <returns></returns>
public QsValue Execute(int executionIndex)
{
if (ElementValue.GetType() == typeof(Func <int, QsValue>))
{
return(((Func <int, QsValue>)ElementValue)(executionIndex));
}
else if (ElementValue.GetType() == typeof(QsSequence))
{
QsSequence seq = (QsSequence)ElementValue;
return((QsValue)seq.GetElementValue(executionIndex));
}
else
{
return((QsValue)ElementValue);
}
}
