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// Copyright Steven Watanabe 2009
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/mpl for documentation.
// $Id$
// $Date: 2008-10-10 02:21:07 -0700 (Fri, 10 Oct 2008) $
// $Revision: 49240 $
#include <boost/mpl/push_back.hpp>
#include <boost/mpl/aux_/test.hpp>
struct no_push_back_tag {};
struct no_push_back
{
typedef no_push_back_tag tag;
};
struct has_push_back_tag {};
struct with_push_back
{
typedef has_push_back_tag tag;
};
namespace boost { namespace mpl {
template<>
struct push_back_impl< has_push_back_tag >
{
template<class Seq, class T> struct apply
{
typedef no_push_back type;
};
};
}}
MPL_TEST_CASE()
{
MPL_ASSERT_NOT(( has_push_back< no_push_back > ));
MPL_ASSERT(( has_push_back< with_push_back > ));
typedef push_back< with_push_back , int >::type test;
MPL_ASSERT(( is_same< test, no_push_back > ));
}
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