int? _getLineFromTokenPos()

in lib/src/collect.dart [204:222]

• 17 lines of code
• 5 McCabe index (conditional complexity)

int? _getLineFromTokenPos(Script script, int tokenPos) {
  // TODO(cbracken): investigate whether caching this lookup results in
  // significant performance gains.
  var min = 0;
  var max = script.tokenPosTable!.length;
  while (min < max) {
    final mid = min + ((max - min) >> 1);
    final row = script.tokenPosTable![mid];
    if (row[1] > tokenPos) {
      max = mid;
    } else {
      for (var i = 1; i < row.length; i += 2) {
        if (row[i] == tokenPos) return row.first;
      }
      min = mid + 1;
    }
  }
  return null;
}