static { epsilon.add(Sequence.empty); }
// FIXME
- private Forest.Ref epsilonForm = null;
+ private Forest.Many epsilonForm = null;
Forest epsilonForm() {
if (epsilonForm != null) return epsilonForm;
- epsilonForm = new Forest.Ref();
+ epsilonForm = new Forest.Many();
for(Sequence s : this) {
// FIXME FIXME FIXME
if (new Walk.Cache().possiblyEpsilon(s))