when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String? action,
    2. XrayNetworkList? network,
    3. XrayPortList? port,
    4. XrayStringList? ip,
    5. XrayInt32Range? blockDelay,
    )
)

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(String? action, XrayNetworkList? network,
          XrayPortList? port, XrayStringList? ip, XrayInt32Range? blockDelay)
      $default,
) {
  final _that = this;
  switch (_that) {
    case _FreedomFinalRuleConfig():
      return $default(_that.action, _that.network, _that.port, _that.ip,
          _that.blockDelay);
    case _:
      throw StateError('Unexpected subclass');
  }
}