Iterable split()

in lib/src/characters_impl.dart [158:186]

• 28 lines of code
• 9 McCabe index (conditional complexity)

  Iterable<Characters> split(Characters pattern, [int maxParts = 0]) sync* {
    if (maxParts == 1 || string.isEmpty) {
      yield this;
      return;
    }
    var patternString = pattern.string;
    var start = 0;
    if (patternString.isNotEmpty) {
      do {
        var match = _indexOf(string, patternString, start, string.length);
        if (match < 0) break;
        yield StringCharacters(string.substring(start, match));
        start = match + patternString.length;
        maxParts--;
      } while (maxParts != 1);
    } else {
      // Empty pattern. Split on internal boundaries only.
      var breaks = Breaks(string, 0, string.length, stateSoTNoBreak);
      do {
        var match = breaks.nextBreak();
        if (match < 0) return;
        yield StringCharacters(string.substring(start, match));
        start = match;
        maxParts--;
      } while (maxParts != 1);
      if (start == string.length) return;
    }
    yield StringCharacters(string.substring(start));
  }