when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. int version,
    2. String? auth,
    3. String? congestion,
    4. Bandwidth? up,
    5. Bandwidth? down,
    6. @JsonKey.new(name: 'udphop') UdpHop? udpHop,
    7. int? udpIdleTimeout,
    8. Masquerade? masquerade,
    )
)

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(
          int version,
          String? auth,
          String? congestion,
          Bandwidth? up,
          Bandwidth? down,
          @JsonKey(name: 'udphop') UdpHop? udpHop,
          int? udpIdleTimeout,
          Masquerade? masquerade)
      $default,
) {
  final _that = this;
  switch (_that) {
    case _HysteriaConfig():
      return $default(_that.version, _that.auth, _that.congestion, _that.up,
          _that.down, _that.udpHop, _that.udpIdleTimeout, _that.masquerade);
    case _:
      throw StateError('Unexpected subclass');
  }
}