1/*=============================================================================
2 Copyright (c) 2001-2011 Joel de Guzman
3 Copyright (c) 2005-2006 Dan Marsden
4
5 Distributed under the Boost Software License, Version 1.0. (See accompanying
6 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7==============================================================================*/
8#if !defined(BOOST_FUSION_BEGIN_IMPL_31122005_1209)
9#define BOOST_FUSION_BEGIN_IMPL_31122005_1209
10
11#include <boost/fusion/support/config.hpp>
12#include <boost/fusion/adapted/mpl/mpl_iterator.hpp>
13#include <boost/mpl/begin.hpp>
14#include <boost/type_traits/remove_const.hpp>
15
16namespace boost { namespace fusion {
17
18 struct mpl_sequence_tag;
19
20 namespace extension
21 {
22 template <typename Tag>
23 struct begin_impl;
24
25 template <>
26 struct begin_impl<mpl_sequence_tag>
27 {
28 template <typename Sequence>
29 struct apply
30 {
31 typedef typename mpl::begin<
32 typename remove_const<Sequence>::type
33 >::type iterator;
34 typedef mpl_iterator<iterator> type;
35
36 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
37 static type
38 call(Sequence)
39 {
40 return type();
41 }
42 };
43 };
44 }
45}}
46
47#endif
48

source code of include/boost/fusion/adapted/mpl/detail/begin_impl.hpp