when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String? name,
    2. String? alpn,
    3. String? path,
    4. XrayFallbackType? type,
    5. Object? dest,
    6. int? xver,
    )
)

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? name, String? alpn, String? path,
          XrayFallbackType? type, Object? dest, int? xver)
      $default,
) {
  final _that = this;
  switch (_that) {
    case _VLessInboundFallback():
      return $default(_that.name, _that.alpn, _that.path, _that.type,
          _that.dest, _that.xver);
    case _:
      throw StateError('Unexpected subclass');
  }
}