bool _advanceEnd()

in lib/src/characters_impl.dart [487:519]

• 33 lines of code
• 10 McCabe index (conditional complexity)

  bool _advanceEnd(int count, int newStart) {
    if (count > 0) {
      var state = stateSoTNoBreak;
      var index = _end;
      while (index < _string.length) {
        var char = _string.codeUnitAt(index);
        var category = categoryControl;
        var nextIndex = index + 1;
        if (char & 0xFC00 != 0xD800) {
          category = low(char);
        } else if (nextIndex < _string.length) {
          var nextChar = _string.codeUnitAt(nextIndex);
          if (nextChar & 0xFC00 == 0xDC00) {
            nextIndex += 1;
            category = high(char, nextChar);
          }
        }
        state = move(state, category);
        if (state & stateNoBreak == 0 && --count == 0) {
          _move(newStart, index);
          return true;
        }
        index = nextIndex;
      }
      _move(newStart, _string.length);
      return count == 1 && state != stateSoTNoBreak;
    } else if (count == 0) {
      _move(newStart, _end);
      return true;
    } else {
      throw RangeError.range(count, 0, null, "count");
    }
  }