public bool IsDerivableFrom(IEarleyData data)
{
var typedData = (OrientedTreeNode)data;
if (this.IsAdjunctionTree == AdjunctionType.Complex)
{
throw new InvalidOperationException("Complexe adjunction is not supported (yet).");
}
return(this.RootNode.Name == typedData.Node.Name &&
(typedData.Node.AcceptsAdjunction &&
(this.IsAdjunctionTree == AdjunctionType.Left && typedData.Direction == Direction.Right ||
this.IsAdjunctionTree == AdjunctionType.Right && typedData.Direction == Direction.Left) ||
this.IsAdjunctionTree == AdjunctionType.None && typedData.Node.AcceptsSubstitution));
}
public bool IsDerivableFrom(IEarleyData data)
{
return(this.Left.Equals(data));
}
public IEnumerable <IEarleyGrammarRule> GetRulesWithLeft(IEarleyData left)
{
return(this.rules.Where(rule => rule.IsDerivableFrom(left)));
}
