int nextBreak()

in lib/src/grapheme_clusters/breaks.dart [113:144]

• 31 lines of code
• 11 McCabe index (conditional complexity)

  int nextBreak() {
    while (cursor > start) {
      var breakAt = cursor;
      var char = base.codeUnitAt(--cursor);
      if (char & 0xFC00 != 0xDC00) {
        state = moveBack(state, low(char));
        if (state >= stateLookaheadMin) state = _lookAhead(state);
        if (state & stateNoBreak == 0) {
          return breakAt;
        }
        continue;
      }
      // The category of an unpaired tail surrogate is Control.
      var category = categoryControl;
      if (cursor >= start) {
        var prevChar = base.codeUnitAt(cursor - 1);
        if (prevChar & 0xFC00 == 0xD800) {
          category = high(prevChar, char);
          cursor -= 1;
        }
      }
      state = moveBack(state, category);
      if (state >= stateLookaheadMin) state = _lookAhead(state);
      if (state & stateNoBreak == 0) {
        return breakAt;
      }
    }
    state = moveBack(state, categoryEoT);
    if (state >= stateLookaheadMin) state = _lookAhead(state);
    if (state & stateNoBreak == 0) return cursor;
    return -1;
  }