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_POP_FRONT_09172005_1115)
8 #define FUSION_POP_FRONT_09172005_1115
9 
10 #include <boost/fusion/support/config.hpp>
11 #include <boost/fusion/view/iterator_range/iterator_range.hpp>
12 #include <boost/fusion/sequence/intrinsic/begin.hpp>
13 #include <boost/fusion/sequence/intrinsic/end.hpp>
14 #include <boost/fusion/iterator/next.hpp>
15 
16 namespace boost { namespace fusion
17 {
18     namespace result_of
19     {
20         template <typename Sequence>
21         struct pop_front
22         {
23             typedef
24                 iterator_range<
25                     typename next<
26                         typename begin<Sequence>::type
27                     >::type
28                   , typename end<Sequence>::type
29                 >
30             type;
31         };
32     }
33 
34     template <typename Sequence>
35     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
36     inline typename result_of::pop_front<Sequence const>::type
37     pop_front(Sequence const& seq)
38     {
39         typedef typename result_of::pop_front<Sequence const>::type result;
40         return result(fusion::next(fusion::begin(seq)), fusion::end(seq));
41     }
42 }}
43 
44 #endif
45 
46