// 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 generic types with Null type 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_A31.dart and 
 * arguments_binding_x01.dart.
 * Don't modify it. If you want to change this file, change one of the files 
 * above and then run generator.dart to regenerate the tests.
 */


class A {}

class C extends A {}

class U0<X, Y, Z> extends U1<X, Y, Z> {}

class U1<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> {}

class S0<X, Y, Z> extends V0<X, Y, Z> {}

class S1<X, Y, Z> extends V1<X, Y, Z> {}

class S2<X, Y, Z> extends V2<X, Y, Z> {}

class S3<X, Y, Z> extends V3<X, Y, Z> {}

class X0<X, Y, Z> extends B0<X, Y, Z> {}

class X1<X, Y, Z> extends B1<X, Y, Z> {}

class Y0<X, Y, Z> extends B0<X, Y, Z> {}

class Y1<X, Y, Z> extends B1<X, Y, Z> {}

typedef T0 = U0<Null, Null, Null> 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 = U1<A?, List?, num?> Function<X extends B0, Y extends B1>(
    S0<Null, Null, Null> y0, S1<Null, Null, Null> y1,
    [S2<Null, Null, Null>? x2, S3<Null, Null, Null>? x3]);

U0<Null, Null, Null> 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]) =>
    new U0<Null, Null, Null>();
U1<A?, List?, num?> t1Func<X extends B0, Y extends B1>(
    S0<Null, Null, Null> y0, S1<Null, Null, Null> y1,
    [S2<Null, Null, Null>? x2, S3<Null, Null, Null>? x3]) =>
    new U1<A?, List?, num?>();

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


namedArgumentsFunc1(T1 t1, {T1 t2 = t1Default}) {}
positionalArgumentsFunc1(T1 t1, [T1 t2 = t1Default]) {}

namedArgumentsFunc2<X>(X t1, {required X t2}) {}

class ArgumentsBindingClass {
  ArgumentsBindingClass(T1 t1) {}

  ArgumentsBindingClass.named(T1 t1, {T1 t2 = t1Default}) {}
  ArgumentsBindingClass.positional(T1 t1, [T1 t2 = t1Default]) {}

  factory ArgumentsBindingClass.fNamed(T1 t1, {T1 t2 = t1Default}) {
    return new ArgumentsBindingClass.named(t1, t2: t2);
  }
  factory ArgumentsBindingClass.fPositional(T1 t1, [T1 t2 = t1Default]) {
    return new ArgumentsBindingClass.positional(t1, t2);
  }

  static namedArgumentsStaticMethod(T1 t1, {T1 t2 = t1Default}) {}
  static positionalArgumentsStaticMethod(T1 t1, [T1 t2 = t1Default]) {}

  namedArgumentsMethod(T1 t1, {T1 t2 = t1Default}) {}
  positionalArgumentsMethod(T1 t1, [T1 t2 = t1Default]) {}

  set testSetter(T1 val) {}
}

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

  ArgumentsBindingGen.named(X t1, {required X t2}) {}

  factory ArgumentsBindingGen.fNamed(X t1, {required X t2}) {
    return new ArgumentsBindingGen.named(t1, t2: t2);
  }

  namedArgumentsMethod(X t1, {required 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

}