protected override void ValidateRepeat(RomanCalculator connector)
{
if (connector.Contains($"{this.ToString()}{this.ToString()}"))
{
throw new Exception($"{this.ToString()} can nerver be repeated.");
}
}
protected virtual void ValidateRepeat(RomanCalculator connector)
{
if (connector.Contains($"{this.ToString()}{this.ToString()}{this.ToString()}{this.ToString()}"))
{
throw new Exception($"{this.Symbol} can not be repeated over than 3 times in successive.");
}
MatchCollection matches = null;
if (connector.Contains(new Regex("^[" + this.ToString() + "]{3}([.]){1}" + this.ToString() + "$"), out matches))
{
var midNumber = RomanNumber.Create(matches[0].Value);
if (midNumber.Value >= this.Value)
{
throw new Exception($"{midNumber.Symbol} must be less than {this.ToString()}'s value : {this.ToString()}.");
}
}
}