private List<ForestNode[]> BuildChildren() {
var count = _family.Production.Rhs.Count;
if (count == 0) {
if (_family.Members.Count != 1) {
throw new Exception();
}
var leaf = new ForestLeaf((EpsilonNode)_family.Members[0]);
return new List<ForestNode[]> { new ForestNode[1] { leaf } };
}
var start = new ForestNode[count];
var startList = new List<ForestNode[]> { start };
BuildChildrenHelper(_family, startList, _family.Production.Rhs, count - 1);
return startList;
}
