int getOffset()

in lib/src/file.dart [193:212]

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

  int getOffset(int line, [int? column]) {
    column ??= 0;

    if (line < 0) {
      throw RangeError('Line may not be negative, was $line.');
    } else if (line >= lines) {
      throw RangeError('Line $line must be less than the number of '
          'lines in the file, $lines.');
    } else if (column < 0) {
      throw RangeError('Column may not be negative, was $column.');
    }

    final result = _lineStarts[line] + column;
    if (result > length ||
        (line + 1 < lines && result >= _lineStarts[line + 1])) {
      throw RangeError("Line $line doesn't have $column columns.");
    }

    return result;
  }