protected override long EvaluateInternal(RollData data, DiceAST root, int depth)
{
if (Success == null)
{
throw new DiceException(DiceErrorCode.InvalidSuccess);
}
long rolls = Expression.Evaluate(data, root, depth + 1);
rolls += Success.Evaluate(data, root, depth + 1);
rolls += Failure?.Evaluate(data, root, depth + 1) ?? 0;
CountSuccesses();
return(rolls);
}