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_BUILD_CONS_09232005_1222)
8 #define FUSION_BUILD_CONS_09232005_1222
9 
10 #include <boost/fusion/support/config.hpp>
11 #include <boost/fusion/container/list/cons.hpp>
12 #include <boost/fusion/iterator/equal_to.hpp>
13 #include <boost/fusion/iterator/next.hpp>
14 #include <boost/fusion/iterator/value_of.hpp>
15 #include <boost/fusion/iterator/deref.hpp>
16 
17 namespace boost { namespace fusion { namespace detail
18 {
19     template <
20         typename First
21       , typename Last
22       , bool is_empty = result_of::equal_to<First, Last>::value>
23     struct build_cons;
24 
25     template <typename First, typename Last>
26     struct build_cons<First, Last, true>
27     {
28         typedef nil_ type;
29 
30         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
31         static nil_
callboost::fusion::detail::build_cons32         call(First const&, Last const&)
33         {
34             return nil_();
35         }
36     };
37 
38     template <typename First, typename Last>
39     struct build_cons<First, Last, false>
40     {
41         typedef
42             build_cons<typename result_of::next<First>::type, Last>
43         next_build_cons;
44 
45         typedef cons<
46             typename result_of::value_of<First>::type
47           , typename next_build_cons::type>
48         type;
49 
50         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
51         static type
callboost::fusion::detail::build_cons52         call(First const& f, Last const& l)
53         {
54             typename result_of::value_of<First>::type v = *f;
55             return type(v, next_build_cons::call(fusion::next(f), l));
56         }
57     };
58 
59 }}}
60 
61 #endif
62