1/*=============================================================================
2 Copyright (c) 2001-2011 Joel de Guzman
3
4 Distributed under the Boost Software License, Version 1.0. (See accompanying
5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6==============================================================================*/
7#if !defined(FUSION_CONVERT_10022005_1442)
8#define FUSION_CONVERT_10022005_1442
9
10#include <boost/fusion/support/config.hpp>
11#if BOOST_WORKAROUND(BOOST_GCC, < 30500)
12#include <boost/core/enable_if.hpp>
13#include <boost/type_traits/is_const.hpp>
14#define BOOST_FUSION_WA_GCC34(type1, type2) \
15 boost::lazy_disable_if<boost::is_const<Sequence>, type1, type2>
16#else
17#define BOOST_FUSION_WA_GCC34(type1, type2) type1, type2
18#endif
19
20namespace boost { namespace fusion
21{
22 namespace extension
23 {
24 template <typename Tag>
25 struct convert_impl;
26 }
27
28 namespace result_of
29 {
30 template <typename Tag, typename Sequence>
31 struct convert
32 {
33 typedef typename
34 extension::convert_impl<Tag>::template apply<Sequence>
35 gen;
36
37 typedef typename gen::type type;
38 };
39 }
40
41 template <typename Tag, typename Sequence>
42 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
43 inline typename BOOST_FUSION_WA_GCC34(result_of::convert<Tag, Sequence>)::type
44 convert(Sequence& seq)
45 {
46 typedef typename result_of::convert<Tag, Sequence>::gen gen;
47 return gen::call(seq);
48 }
49
50 template <typename Tag, typename Sequence>
51 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
52 inline typename result_of::convert<Tag, Sequence const>::type
53 convert(Sequence const& seq)
54 {
55 typedef typename result_of::convert<Tag, Sequence const>::gen gen;
56 return gen::call(seq);
57 }
58}}
59
60#undef BOOST_FUSION_WA_GCC34
61#endif
62

source code of include/boost/fusion/sequence/convert.hpp