// Copyright (c) 2019, 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 generic type alias is a declaration [D] of one of the following
/// forms:
///   m typedef id<X1 extends B1, . . . , Xs extends Bs> = T;
///   ...
/// Under the assumption that X1, . . . , Xs are types such that Xj <: Bj, for
/// all j ∈ 1..s, it is a compile-time error if [T] is not regular-bounded, and
/// it is a compile-time error if any type occurring in [T] is not well-bounded.
/// @description Checks that there is no compile time error if [T] is well
/// bounded.
/// @author iarkh@unipro.ru


class A {}
class B<X> {}
class C<X extends C<X>> {}

typedef Alias<X> = Function<Y extends X> (X x);

typedef AAlias<X extends A> = Function<Y extends X> ();

typedef BAlias1<X extends B> = Function<Y extends X> (X x);
typedef BAlias2<X extends B<num>> = X Function<Y extends X> ();

typedef CAlias1<X extends C<X>> = X Function(X x);
typedef CAlias2<X extends C<C<dynamic>>> = X Function(X x);

main() {}