// 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 superclass member of type T1
/// @author sgrekhov@unipro.ru
///
/// This test is generated from positional_function_types_fail_A21.dart and 
/// class_member_fail_x02.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.


import '../../utils/common.dart';
import '../../../../Utils/expect.dart';

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_t02 {
  T1 m = t1Default;

  ClassMemberSuper1_t02(dynamic value) {
    m = value;
  }

  ClassMemberSuper1_t02.named(dynamic value) {
    m = value;
  }

  ClassMemberSuper1_t02.short(this.m);

  void set superSetter(T1 val) {}
}

class ClassMember1_t02 extends ClassMemberSuper1_t02 {

  ClassMember1_t02() : super(forgetType(t0Instance)) {}

  ClassMember1_t02.named() : super.named(forgetType(t0Instance)) {}

  ClassMember1_t02.short() : super.short(forgetType(t0Instance));

  ClassMember1_t02.valid() : super(null);

  test1() {
    m = forgetType(t0Instance);
  }

  test2() {
    superSetter = forgetType(t0Instance);
  }
}

class ClassMemberSuper2_t02<X> {
  X m;

  ClassMemberSuper2_t02(X value): m = value {
  }

  ClassMemberSuper2_t02.named(X value): m = value {
  }

  ClassMemberSuper2_t02.short(this.m);

  void set superSetter(X val) {}
}

class ClassMember2_t02<X> extends ClassMemberSuper2_t02<X> {

  ClassMember2_t02() : super(forgetType(t0Instance)) {}

  ClassMember2_t02.named() : super.named(forgetType(t0Instance)) {}

  ClassMember2_t02.short() : super.short(forgetType(t0Instance));

  test1() {
    m = forgetType(t0Instance);
  }

  test2() {
    superSetter = forgetType(t0Instance);
  }
}

main() {
  Expect.throws(() {
    new ClassMember1_t02();
  }, (e) => e is TypeError || e is CastError);
  Expect.throws(() {
    new ClassMember1_t02.short();
  }, (e) => e is TypeError || e is CastError);
  Expect.throws(() {
    new ClassMember1_t02.named();
  }, (e) => e is TypeError || e is CastError);
  Expect.throws(() {
    new ClassMember1_t02().m = forgetType(t0Instance);
  }, (e) => e is TypeError || e is CastError);
  Expect.throws(() {
    new ClassMember1_t02().superSetter = forgetType(t0Instance);
  }, (e) => e is TypeError || e is CastError);
  Expect.throws(() {
    new ClassMember1_t02().test1();
  }, (e) => e is TypeError || e is CastError);
  Expect.throws(() {
    new ClassMember1_t02().test2();
  }, (e) => e is TypeError || e is CastError);

  // Test type parameters

  //# <-- NotGenericFunctionType
  Expect.throws(() {
    new ClassMember2_t02<T1>();
  }, (e) => e is TypeError || e is CastError);
  Expect.throws(() {
    new ClassMember2_t02<T1>.short();
  }, (e) => e is TypeError || e is CastError);
  Expect.throws(() {
    new ClassMember2_t02<T1>.named();
  }, (e) => e is TypeError || e is CastError);
  Expect.throws(() {
    new ClassMember2_t02<T1>().m = forgetType(t0Instance);
  }, (e) => e is TypeError || e is CastError);
  Expect.throws(() {
    new ClassMember2_t02<T1>().superSetter = forgetType(t0Instance);
  }, (e) => e is TypeError || e is CastError);
  Expect.throws(() {
    new ClassMember2_t02<T1>().test1();
  }, (e) => e is TypeError || e is CastError);
  Expect.throws(() {
    new ClassMember2_t02<T1>().test2();
  }, (e) => e is TypeError || e is CastError);
  //# -->
}