maybeWhen<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeWhen<TResult extends Object?>({
  1. TResult httpStub(
    1. String responseStubValue,
    2. int? statusCodeStubValue,
    3. Map<String, String> headersStubValue
    )?,
  2. TResult genericStub(
    1. void setUp(
      1. dynamic params
      )
    )?,
  3. required TResult orElse(),
})

A variant of when that fallback to an orElse callback.

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return orElse();
}

Implementation

@optionalTypeArgs
TResult maybeWhen<TResult extends Object?>({
  TResult Function(String responseStubValue, int? statusCodeStubValue,
          Map<String, String> headersStubValue)?
      httpStub,
  TResult Function(void Function(dynamic params) setUp)? genericStub,
  required TResult orElse(),
}) {
  final _that = this;
  switch (_that) {
    case _HttpStub() when httpStub != null:
      return httpStub(_that.responseStubValue, _that.statusCodeStubValue,
          _that.headersStubValue);
    case _GenericStub() when genericStub != null:
      return genericStub(_that.setUp);
    case _:
      return orElse();
  }
}