/*
 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

#ifndef SHARE_VM_UTILITIES_TRAITS_IS_CLASS_OR_UNION_HPP
#define SHARE_VM_UTILITIES_TRAITS_IS_CLASS_OR_UNION_HPP

/**
 * IsClassOrUnion<T>::value is true iff the type T is a class or union type.
 */
template<typename T>
class IsClassOrUnion {
  typedef char yes[1];
  typedef char no[2];
  
  template<typename U>
  static yes &check(int U::*);
  
  template<typename>
  static no &check(...);

public:
  static const bool value = (sizeof(check<T>(0)) == sizeof(yes));
};

#endif // SHARE_VM_UTILITIES_TRAITS_IS_CLASS_OR_UNION_HPP