// 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.

// @dart = 2.9

/// @assertionA 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 generic types 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
/// @author sgrekhov@unipro.ru
///
/// This test is generated from positional_function_types_A41.dart and 
/// arguments_binding_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.


// @dart = 2.9


class A {}

class C extends A {}

class U<X, Y, Z> {}

class B0<X, Y, Z> {}

class B1<X, Y, Z> {}

class V0<X, Y, Z> {}

class V1<X, Y, Z> {}

class V2<X, Y, Z> {}

class V3<X, Y, Z> {}

class V4<X, Y, Z> {}

typedef T0 = U<C, List<String>, int> Function<X extends B0, Y extends B1>(
    V0<A, List, num> x0, V1<A, List, num> x1,
    [V2<A, List, num> x2, V3<A, List, num> x3]);
typedef T1 = U<A, List, num> Function<X extends B0, Y extends B1>(
    V0<C, List<String>, int> y0, V1<C, List<String>, int> y1,
    [V2<C, List<String>, int> x2, V3<C, List<String>, int> x3]);

U<C, List<String>, int> t0Func<X extends B0, Y extends B1>(
        V0<A, List, num> x0, V1<A, List, num> x1,
        [V2<A, List, num> x2, V3<A, List, num> x3]) =>
    null;
U<A, List, num> t1Func<X extends B0, Y extends B1>(
        V0<C, List<String>, int> y0, V1<C, List<String>, int> y1,
        [V2<C, List<String>, int> x2, V3<C, List<String>, int> x3]) =>
    null;

T0 t0Instance = t0Func;
T1 t1Instance = t1Func;

// @dart = 2.9


namedArgumentsFunc1(T1 t1, {T1 t2}) {}
positionalArgumentsFunc1(T1 t1, [T1 t2]) {}

namedArgumentsFunc2<X>(X t1, {X t2}) {}
positionalArgumentsFunc2<X>(X t1, [X t2]) {}

class ArgumentsBindingClass {
  ArgumentsBindingClass(T1 t1) {}

  ArgumentsBindingClass.named(T1 t1, {T1 t2}) {}
  ArgumentsBindingClass.positional(T1 t1, [T1 t2]) {}

  factory ArgumentsBindingClass.fNamed(T1 t1, {T1 t2}) {
    return new ArgumentsBindingClass.named(t1, t2: t2);
  }
  factory ArgumentsBindingClass.fPositional(T1 t1, [T1 t2]) {
    return new ArgumentsBindingClass.positional(t1, t2);
  }

  static namedArgumentsStaticMethod(T1 t1, {T1 t2}) {}
  static positionalArgumentsStaticMethod(T1 t1, [T1 t2]) {}

  namedArgumentsMethod(T1 t1, {T1 t2}) {}
  positionalArgumentsMethod(T1 t1, [T1 t2]) {}

  set testSetter(T1 val) {}
}

class ArgumentsBindingGen<X>  {
  ArgumentsBindingGen(X t1) {}

  ArgumentsBindingGen.named(X t1, {X t2}) {}
  ArgumentsBindingGen.positional(X t1, [X t2]) {}

  factory ArgumentsBindingGen.fNamed(X t1, {X t2}) {
    return new ArgumentsBindingGen.named(t1, t2: t2);
  }
  factory ArgumentsBindingGen.fPositional(X t1, [X t2]) {
    return new ArgumentsBindingGen.positional(t1, t2);
  }

  namedArgumentsMethod(X t1, {X t2}) {}
  positionalArgumentsMethod(X t1, [X t2]){}

  set testSetter(X val) {}
}

main() {
  // test functions
  namedArgumentsFunc1(t0Instance, t2: t0Instance);
  positionalArgumentsFunc1(t0Instance, t0Instance);

  // test class constructors
  ArgumentsBindingClass instance1 = new ArgumentsBindingClass(t0Instance);
  instance1 = new ArgumentsBindingClass.fNamed(t0Instance, t2: t0Instance);
  instance1 = new ArgumentsBindingClass.fPositional(t0Instance, t0Instance);
  instance1 = new ArgumentsBindingClass.named(t0Instance, t2: t0Instance);
  instance1 = new ArgumentsBindingClass.positional(t0Instance, t0Instance);

  // tests methods and setters
  instance1.namedArgumentsMethod(t0Instance, t2: t0Instance);
  instance1.positionalArgumentsMethod(t0Instance, t0Instance);
  instance1.testSetter = t0Instance;

  // test static methods
  ArgumentsBindingClass.namedArgumentsStaticMethod(t0Instance, t2: t0Instance);
  ArgumentsBindingClass.positionalArgumentsStaticMethod(t0Instance, t0Instance);

  // Test type parameters

}