parse method

@override Tuple1<List<E>>? parse(ParseState state)

Parses input data actively and produces the result.

Returns Tuple1 of the result if parsing was successful; otherwise returns null.

final r1 = p.parse(state);

Implementation

@override
Tuple1<List<E>>? parse(ParseState state) {
  final pos = state.pos;
  final r1 = p.parse(state);
  if (r1 == null) {
    return min == 0 ? Tuple1(<E>[]) : null;
  }

  final list = [r1.$0];
  while (list.length < max) {
    final r1 = p.parse(state);
    if (r1 == null) {
      break;
    }

    list.add(r1.$0);
  }

  if (list.length >= min) {
    return Tuple1(list);
  }

  state.pos = pos;
}