blob: 2ba128f558ab799d9768a1085e5a93e6e40579b9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
/*=============================================================================
Copyright (c) 2001-2011 Joel de Guzman
Copyright (c) 2006 Dan Marsden
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)
==============================================================================*/
#if !defined (BOOST_FUSION_PAIR_TIE_20060812_2058)
#define BOOST_FUSION_PAIR_TIE_20060812_2058
#include <boost/fusion/support/config.hpp>
#include <boost/type_traits/is_const.hpp>
#include <boost/utility/enable_if.hpp>
namespace boost { namespace fusion {
template<typename Key, typename T>
struct pair;
namespace result_of
{
template<typename Key, typename T>
struct pair_tie
{
typedef fusion::pair<Key, T&> type;
};
}
template<typename Key, typename T>
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
typename disable_if<is_const<T>, typename result_of::pair_tie<Key, T>::type>::type
pair_tie(T& t)
{
return typename result_of::pair_tie<Key, T>::type(t);
}
template<typename Key, typename T>
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
typename result_of::pair_tie<Key, T const>::type
pair_tie(T const& t)
{
return typename result_of::pair_tie<Key, T const>::type(t);
}
}}
#endif
|
