1/*=============================================================================
2 Copyright (c) 2001-2011 Joel de Guzman
3 Copyright (c) 2011 Eric Niebler
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_SINGLE_VIEW_05052005_0335)
9#define BOOST_FUSION_SINGLE_VIEW_05052005_0335
10
11#include <boost/fusion/support/config.hpp>
12#include <boost/fusion/support/detail/access.hpp>
13#include <boost/fusion/support/detail/as_fusion_element.hpp>
14#include <boost/fusion/support/sequence_base.hpp>
15#include <boost/fusion/view/single_view/single_view_iterator.hpp>
16#include <boost/fusion/view/single_view/detail/at_impl.hpp>
17#include <boost/fusion/view/single_view/detail/begin_impl.hpp>
18#include <boost/fusion/view/single_view/detail/end_impl.hpp>
19#include <boost/fusion/view/single_view/detail/size_impl.hpp>
20#include <boost/fusion/view/single_view/detail/value_at_impl.hpp>
21#include <boost/mpl/bool.hpp>
22#include <boost/mpl/int.hpp>
23#include <boost/config.hpp>
24
25#if defined (BOOST_MSVC)
26# pragma warning(push)
27# pragma warning (disable: 4512) // assignment operator could not be generated.
28#endif
29
30namespace boost { namespace fusion
31{
32 struct single_view_tag;
33 struct random_access_traversal_tag;
34 struct fusion_sequence_tag;
35
36 template <typename T>
37 struct single_view : sequence_base<single_view<T> >
38 {
39 typedef single_view_tag fusion_tag;
40 typedef fusion_sequence_tag tag; // this gets picked up by MPL
41 typedef random_access_traversal_tag category;
42 typedef mpl::true_ is_view;
43 typedef mpl::int_<1> size;
44 typedef T value_type;
45
46 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
47 single_view()
48 : val() {}
49
50 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
51 explicit single_view(typename detail::call_param<T>::type in_val)
52 : val(in_val) {}
53
54 value_type val;
55 };
56
57 template <typename T>
58 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
59 inline single_view<typename detail::as_fusion_element<T>::type>
60 make_single_view(T const& v)
61 {
62 return single_view<typename detail::as_fusion_element<T>::type>(v);
63 }
64}}
65
66#if defined (BOOST_MSVC)
67# pragma warning(pop)
68#endif
69
70#endif
71
72
73

source code of include/boost/fusion/view/single_view/single_view.hpp