void _addOption()

in lib/src/arg_parser.dart [274:321]

• 43 lines of code
• 7 McCabe index (conditional complexity)

  void _addOption(
      String name,
      String? abbr,
      String? help,
      String? valueHelp,
      Iterable<String>? allowed,
      Map<String, String>? allowedHelp,
      defaultsTo,
      Function? callback,
      OptionType type,
      {bool negatable = false,
      bool? splitCommas,
      bool mandatory = false,
      bool hide = false,
      List<String> aliases = const []}) {
    var allNames = [name, ...aliases];
    if (allNames.any((name) => findByNameOrAlias(name) != null)) {
      throw ArgumentError('Duplicate option or alias "$name".');
    }

    // Make sure the abbreviation isn't too long or in use.
    if (abbr != null) {
      var existing = findByAbbreviation(abbr);
      if (existing != null) {
        throw ArgumentError(
            'Abbreviation "$abbr" is already used by "${existing.name}".');
      }
    }

    // Make sure the option is not mandatory with a default value.
    if (mandatory && defaultsTo != null) {
      throw ArgumentError(
          'The option $name cannot be mandatory and have a default value.');
    }

    var option = newOption(name, abbr, help, valueHelp, allowed, allowedHelp,
        defaultsTo, callback, type,
        negatable: negatable,
        splitCommas: splitCommas,
        mandatory: mandatory,
        hide: hide,
        aliases: aliases);
    _options[name] = option;
    _optionsAndSeparators.add(option);
    for (var alias in aliases) {
      _aliases[alias] = name;
    }
  }