// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

/// @assertion Let [G] be a generic class or parameterized type alias with formal
/// type parameter declarations [F1] .. [Fk] containing formal type parameters
/// [X1] .. [Xk] and bounds [B1] .. [Bk]. We say that the formal type parameter
/// [Xj] has a simple bound when one of the following requirements is satisfied:
/// [Bj] is omitted.
/// [Bj] is included, but does not contain any of [X1] .. [Xk]. If [Bj] contains
/// a type [T] on the form qualified (for instance, [C] or [p.D]) which denotes a
/// generic class or parameterized type alias [G1] (that is, [T] is a raw type),
/// every type argument of [G1] has a simple bound.
/// @description Checks that instantiate-to-bounds work as expected for
/// non-nullable non-function type alias with two depending type parameters.
/// @author iarkh@unipro.ru

// SharedOptions=--enable-experiment=nonfunction-type-aliases

import "../../../../Utils/expect.dart";

class C<X, Y> {}

class A<X> {}
typedef B<X extends A, Y extends X> = C<X, Y?>;

main() {
  B? source;
  var fsource = toF(source);

  F<B<A<dynamic>, A<dynamic>>?>? target = fsource;

  F<B<A<dynamic>?, A<dynamic>?>?>? target0 = fsource;
//                                           ^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  F<B<A<int>, A<dynamic>>?>? target1  = fsource;
//                                      ^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  F<B<A<dynamic>, A<int>>?>? target2  = fsource;
//                                      ^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  F<B<A<Null>, A<dynamic>>?>? target3 = fsource;
//                                      ^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  F<B<A<dynamic>, A<Null>>?>? target4 = fsource;
//                                      ^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  F<B<A<int>, A<int>>?>? target5 = fsource;
//                                 ^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  F<B<A<Never>, A<Never>>?>? target6 = fsource;
//                                   ^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  B();
}