LanguageFeatures/Super-mixins/more_specific_t06.dart

/*
 * 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 If more than one super-constraint interface declares a member
 * with  the same name, at least one of those members is more specific than the
 * rest,  and this is the unique signature that super-invocations are allowed
 * to invoke.
 *
 * @description Checks that if more than one super-constraint interface declares
 * a member with the same name and there is no member that is more specific
 * than the rest, then this is a compile error. Test type parameters
 * @compile-error
 * @author sgrekhov@unipro.ru
 */

class S {}
class T {}
class X extends S {}
class Y extends T {}

class I {}
class J {}

abstract class B<T1> {
  T1 get b1;
}
abstract class C<T1> {
  T1 get b1;
}

mixin M<X extends S, Y extends T> on B<X>, C<Y> implements I, J {
}

class A implements B<S>, C<T> {
  T get b1 => new T();
}

class MA extends A with M<S, T> {
}

main() {
  new MA();
}