when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. XrayAddress? address,
    2. int? port,
    3. int? level,
    4. String? email,
    5. String? password,
    6. String? flow,
    7. List<TrojanServerTarget>? 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,
          String? password, String? flow, List<TrojanServerTarget>? servers)
      $default,
) {
  final _that = this;
  switch (_that) {
    case _TrojanClientConfig():
      return $default(_that.address, _that.port, _that.level, _that.email,
          _that.password, _that.flow, _that.servers);
    case _:
      throw StateError('Unexpected subclass');
  }
}