parse method

Implementation

@override
Result<List<O>>? parse(State<I> state) {
  final r = p.parse(state);
  if (r == null) {
    return null;
  }

  final list = [r.value];
  while (true) {
    final r = p.parse(state);
    if (r == null) {
      return Result(list);
    }

    list.add(r.value);
  }
}