public override bool Evaluate()
{
// Drill down to a single POSPhrase
List <IParsedPhrase> unmatched = new List <IParsedPhrase>(matcher.Unmatched);
IParsedPhrase input = matcher.Input;
while (!input.IsLeaf)
{
GroupPhrase groupPhrase = new GroupPhrase(input);
unmatched.InsertRange(0, groupPhrase.GetRange(1));
input = groupPhrase.GetBranch(0);
}
List <IContent> elements = matcher.Context.LookupDefaulted <List <IContent> >(name, new List <IContent>());
elements.Add(new Word(input.Text));
Context eaten;
if (needRemoval)
{
eaten = new Context(matcher.Context, matcher.Context.Contents.GetRange(1, matcher.Context.Contents.Count - 1));
}
else
{
eaten = new Context(matcher.Context, matcher.Context.Contents);
}
eaten.Map.Add(name, elements);
// Continue matcher
if (unmatched.Count == 0)
{
if (eaten.Contents.Count == 0 || Matcher.IsRemainderOptional(eaten.Contents))
{
matcher.Success.Continue(eaten, matcher.Failure);
}
else
{
matcher.Failure.Fail("Ran out of input after *.", matcher.Success);
}
}
else
{
// This matcher is for StarEater to eat another
Matcher clone = (Matcher)matcher.Clone();
clone.Context = eaten;
clone.Input = unmatched[0];
clone.Unmatched = unmatched.GetRange(1, unmatched.Count - 1);
StarEater eater = new StarEater(coderack, salience, clone, name, false);
if (eaten.Contents.Count == 0)
{
// Just add ourselves again
coderack.AddCodelet(eater, "Evaluate empty");
}
else
{
Matcher.MatchAgainst(salience, eaten, clone.Input, clone.Unmatched, matcher.Success, eater);
}
}
return(true);
}
