1
2#ifndef BOOST_MPL_NEXT_PRIOR_HPP_INCLUDED
3#define BOOST_MPL_NEXT_PRIOR_HPP_INCLUDED
4
5// Copyright Aleksey Gurtovoy 2000-2004
6//
7// Distributed under the Boost Software License, Version 1.0.
8// (See accompanying file LICENSE_1_0.txt or copy at
9// http://www.boost.org/LICENSE_1_0.txt)
10//
11// See http://www.boost.org/libs/mpl for documentation.
12
13// $Id$
14// $Date$
15// $Revision$
16
17#include <boost/mpl/aux_/common_name_wknd.hpp>
18#include <boost/mpl/aux_/na_spec.hpp>
19#include <boost/mpl/aux_/lambda_support.hpp>
20
21namespace boost { namespace mpl {
22
23BOOST_MPL_AUX_COMMON_NAME_WKND(next)
24BOOST_MPL_AUX_COMMON_NAME_WKND(prior)
25
26template<
27 typename BOOST_MPL_AUX_NA_PARAM(T)
28 >
29struct next
30{
31 typedef typename T::next type;
32 BOOST_MPL_AUX_LAMBDA_SUPPORT(1,next,(T))
33};
34
35template<
36 typename BOOST_MPL_AUX_NA_PARAM(T)
37 >
38struct prior
39{
40 typedef typename T::prior type;
41 BOOST_MPL_AUX_LAMBDA_SUPPORT(1,prior,(T))
42};
43
44BOOST_MPL_AUX_NA_SPEC(1, next)
45BOOST_MPL_AUX_NA_SPEC(1, prior)
46
47}}
48
49#endif // BOOST_MPL_NEXT_PRIOR_HPP_INCLUDED
50