when<TResult extends Object?> method

@optionalTypeArgs TResult when<TResult extends Object?>(TResult $default(XrayAddress? address, int? port, int? level, String? email, @JsonKey.new(name: 'user') String? username, @JsonKey.new(name: 'pass') String? password, List<SocksRemoteConfig>? servers,))

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs
TResult when<TResult extends Object?>(
  TResult Function(
          XrayAddress? address,
          int? port,
          int? level,
          String? email,
          @JsonKey(name: 'user') String? username,
          @JsonKey(name: 'pass') String? password,
          List<SocksRemoteConfig>? servers)
      $default,
) {
  final _that = this;
  switch (_that) {
    case _SocksClientConfig():
      return $default(_that.address, _that.port, _that.level, _that.email,
          _that.username, _that.password, _that.servers);
    case _:
      throw StateError('Unexpected subclass');
  }
}