parseNumber method

Implementation

@override
Int64? parseNumber(String? input) {
  if (input == null || input.isEmpty) {
    return null;
  }

  try {
    // If using formatting, we must firsrt parse back to a non-formatted
    // String representation as Int64 cannot handle commas.
    if (_numberFormat != null) {
      input = _numberFormat!.parse(input).toString();
    }

    return Int64.parseInt(input);
  } on FormatException {
    return null;
  }
}