1
2#ifndef BOOST_MPL_PAIR_HPP_INCLUDED
3#define BOOST_MPL_PAIR_HPP_INCLUDED
4
5// Copyright Aleksey Gurtovoy 2001-2004
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_/msvc_eti_base.hpp>
18#include <boost/mpl/aux_/na_spec.hpp>
19#include <boost/mpl/aux_/lambda_support.hpp>
20#include <boost/mpl/aux_/config/eti.hpp>
21
22namespace boost { namespace mpl {
23
24template<
25 typename BOOST_MPL_AUX_NA_PARAM(T1)
26 , typename BOOST_MPL_AUX_NA_PARAM(T2)
27 >
28struct pair
29{
30 typedef pair type;
31 typedef T1 first;
32 typedef T2 second;
33
34 BOOST_MPL_AUX_LAMBDA_SUPPORT(2,pair,(T1,T2))
35};
36
37template<
38 typename BOOST_MPL_AUX_NA_PARAM(P)
39 >
40struct first
41{
42#if !defined(BOOST_MPL_CFG_MSVC_70_ETI_BUG)
43 typedef typename P::first type;
44#else
45 typedef typename aux::msvc_eti_base<P>::first type;
46#endif
47 BOOST_MPL_AUX_LAMBDA_SUPPORT(1,first,(P))
48};
49
50template<
51 typename BOOST_MPL_AUX_NA_PARAM(P)
52 >
53struct second
54{
55#if !defined(BOOST_MPL_CFG_MSVC_70_ETI_BUG)
56 typedef typename P::second type;
57#else
58 typedef typename aux::msvc_eti_base<P>::second type;
59#endif
60 BOOST_MPL_AUX_LAMBDA_SUPPORT(1,second,(P))
61};
62
63
64BOOST_MPL_AUX_NA_SPEC_NO_ETI(2, pair)
65BOOST_MPL_AUX_NA_SPEC(1, first)
66BOOST_MPL_AUX_NA_SPEC(1, second)
67
68}}
69
70#endif // BOOST_MPL_PAIR_HPP_INCLUDED
71

source code of include/boost/mpl/pair.hpp