addRange method

void addRange(int start, int end)

Adds all messages between start and end inclusive.

Implementation

void addRange(int start, int end) {
  // start:end
  if (start > maxId || end > maxId) {
    throw InvalidArgumentException('range $start:$end exceeds $maxId');
  }
  if ((start - end).abs() >= maxRangeLength) {
    throw InvalidArgumentException(
      'range $start:$end spans more than $maxRangeLength messages',
    );
  }
  if (start == end) {
    add(start);

    return;
  }
  final wasEmpty = isEmpty;
  if (start < end) {
    _ids.addAll([for (int i = start; i <= end; i++) i]);
  } else {
    _ids.addAll([for (int i = end; i <= start; i++) i]);
  }
  _text = wasEmpty ? '$start:$end' : null;
}