//public WordDerivation[] LaterDerivations { get; set; }
public WordDerivation(Rule rule, Word original, Word derived, WordDerivation previous)
{
Rule = rule;
Original = original;
Derived = derived;
Previous = previous;
}
public WordDerivation[] Derive(ExecutionContext context, Word word)
{
var originalDerivation = WordDerivation.Origin(word);
var derivations = new WordDerivation[] { originalDerivation };
var newDerivations = new List <WordDerivation>();
foreach (var rule in Rules)
{
foreach (var derivation in derivations)
{
try
{
var results = rule.Derive(context, derivation);
if (results.Length > 0)
{
newDerivations.AddRange(results);
}
else
{
newDerivations.Add(derivation);
}
}
catch (Exception e)
{
throw new RuleException(rule, e);
}
}
derivations = newDerivations.ToArray();
newDerivations.Clear();
}
return(derivations.ToArray());
}