/*
 * 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.
 */
/**
 * @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
 */

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;
//# @T0 = T0
//# @T1 = T1
//# @GenericFunctionType