// 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 and T1 satisfies the rules above, then T0 is
/// subtype of T1. Test the case when p == n and m == q.
/// @author sgrekhov@unipro.ru
///
/// @description Check that if type T0 is a subtype of a type T1, then instance
/// of T0 can be be used as an argument of type T1. Test mixin members
/// @author sgrekhov@unipro.ru
///
/// This test is generated from positional_function_types_A01.dart and 
/// arguments_binding_x03.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 extends 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 ArgumentsBindingMixin1_t03 {
  T1 m = t1Default;

  void superTest(T1 val) {}
  void superTestPositioned(T1 val, [T1 val2 = t1Default]) {}
  void superTestNamed(T1 val, {T1 val2 = t1Default}) {}
  T1 get superGetter => m;
  void set superSetter(T1 val) {}
}

class ArgumentsBinding1_t03 extends Object with ArgumentsBindingMixin1_t03 {

  test(dynamic t1, dynamic t2) {
    superTest(t1);
    superTestPositioned(t1);
    superTestPositioned(t2, t1);
    superTestNamed(t1);
    superTestNamed(t2, val2: t1);
    superSetter = t1;
    m = t1;
    superGetter;
  }
}

class ArgumentsBindingMixin2_t03<X> {
  void superTest(X val) {}
  void superTestNamed(X val, {required X val2}) {}
  void set superSetter(X val) {}
}

class ArgumentsBinding2_t03<X> extends Object with ArgumentsBindingMixin2_t03<X> {

  test(dynamic t1, dynamic t2) {
    superTest(t1);
    superTestNamed(t2, val2: t1);
    superSetter = t1;
  }
}

main() {
  ArgumentsBinding1_t03 c1 = new ArgumentsBinding1_t03();

  c1.test(t0Instance, t1Instance);
  c1.superTest(t0Instance);
  c1.superTestPositioned(t0Instance);
  c1.superTestPositioned(t1Instance, t0Instance);
  c1.superTestNamed(t0Instance);
  c1.superTestNamed(t1Instance, val2: t0Instance);
  c1.superSetter = t0Instance;
  c1.superGetter;

  // Test type parameters

  //# <-- NotGenericFunctionType
  ArgumentsBinding2_t03<T1> c2 = new ArgumentsBinding2_t03<T1>();
  c2.test(t0Instance, t1Instance);
  c2.superTest(t0Instance);
  c2.superTestNamed(t1Instance, val2: t0Instance);
  c2.superSetter = t0Instance;
  //# -->
}