public int CompareTo(PRule <T> other)
{
var fromCmp = FromSymbol.CompareTo(other.FromSymbol);
var symbolCmp = Letter.CompareTo(other.Letter);
var toCmp = 1;
if (ToSymbol != null)
{
toCmp = ToSymbol.CompareTo(other.ToSymbol);
}
return(fromCmp != 0 ? fromCmp : (symbolCmp != 0 ? symbolCmp : toCmp));
}
public void AddProductionRule(PRule <T> rule)
{
this.ProductionRules.Add(rule);
if (rule.FromSymbol != null)
{
this.Symbols.Add(rule.FromSymbol);
}
if (rule.ToSymbol != null)
{
this.Symbols.Add(rule.ToSymbol);
}
}