// 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 A type T0 is a subtype of a type T1 (written T0 <: T1) when:
/// Positional Function Types: T0 is U0 Function<X0 extends B00, ... ,
/// Xk extends B0k>(V0 x0, ..., Vn xn, [Vn+1 xn+1, ..., Vm xm])
///
///  and T1 is U1 Function<Y0 extends B10, ..., Yk extends B1k>(S0 y0, ...,
///  Sp yp, [Sp+1 yp+1, ..., Sq yq])
///  and p >= n
///  and m >= q
///  and Si[Z0/Y0, ..., Zk/Yk] <: Vi[Z0/X0, ..., Zk/Xk] for i in 0...q
///  and U0[Z0/X0, ..., Zk/Xk] <: U1[Z0/Y0, ..., Zk/Yk]
///  and B0i[Z0/X0, ..., Zk/Xk] === B1i[Z0/Y0, ..., Zk/Yk] for i in 0...k
///  where the Zi are fresh type variables with bounds B0i[Z0/X0, ..., Zk/Xk]
///
/// @description Check that if T0 isn't a subtype of T1 if U0[Z0/X0, ..., Zk/Xk]
/// isn't a subtype of U1[Z0/Y0, ..., Zk/Yk].
/// @author sgrekhov@unipro.ru
/// @author ngl@unipro.ru
///
/// @description Check that if type T0 is not a subtype of a type T1, then
/// instance of T0 cannot be assigned to the mixin member of type T1.
/// Assignment to instance variable of super class is tested.
/// @author sgrekhov@unipro.ru
/// @author ngl@unipro.ru
///
/// This test is generated from positional_function_types_fail_A21.dart and 
/// class_member_mixin_fail_x01.dart.
/// Don't modify it. If you want to change this test, change one of the files 
/// above and then run generator.dart to regenerate the tests.


class U0 {} // U0 is not subtype of U1
class U1 {}
class V0 {}
class V1 {}
class V2 {}
class V3 {}
class S0 extends V0 {}
class S1 extends V1 {}
class S2 extends V2 {}
class S3 extends V3 {}

typedef T0 = U0 Function(V0 x0, V1 x1, [V2? x2, V3? x3]);
typedef T1 = U1 Function(S0 y0, S1 y1, [S2? y2, S3? y3]);

U0 t0Func(V0 x0, V1 x1, [V2? x2, V3? x3]) => new U0();
U1 t1Func(S0 y0, S1 y1, [S2? y2, S3? y3]) => new U1();

T0 t0Instance = t0Func;
T1 t1Instance = t1Func;
const t1Default = t1Func;


class ClassMemberSuper1_t03 {
  T1 m = t1Default;
  void set superSetter(T1 val) {}
}

class ClassMember1_t03 extends Object with ClassMemberSuper1_t03 {
  test1() {
    m = t0Instance;
//      ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
  }
  test2() {
    superSetter = t0Instance;
//                ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
  }
}

main() {
  new ClassMember1_t03().m = t0Instance;
//                           ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
  new ClassMember1_t03().superSetter = t0Instance;
//                                     ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
}