Chris@16: /*=============================================================================
Chris@16:     Copyright (c) 2001-2011 Joel de Guzman
Chris@16:     Copyright (c) 2011 Eric Niebler
Chris@16: 
Chris@16:     Distributed under the Boost Software License, Version 1.0. (See accompanying 
Chris@16:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: ==============================================================================*/
Chris@16: #if !defined(BOOST_FUSION_SINGLE_VIEW_05052005_0335)
Chris@16: #define BOOST_FUSION_SINGLE_VIEW_05052005_0335
Chris@16: 
Chris@101: #include <boost/fusion/support/config.hpp>
Chris@16: #include <boost/fusion/support/detail/access.hpp>
Chris@16: #include <boost/fusion/support/detail/as_fusion_element.hpp>
Chris@16: #include <boost/fusion/support/sequence_base.hpp>
Chris@16: #include <boost/fusion/view/single_view/single_view_iterator.hpp>
Chris@16: #include <boost/fusion/view/single_view/detail/at_impl.hpp>
Chris@16: #include <boost/fusion/view/single_view/detail/begin_impl.hpp>
Chris@16: #include <boost/fusion/view/single_view/detail/end_impl.hpp>
Chris@16: #include <boost/fusion/view/single_view/detail/size_impl.hpp>
Chris@16: #include <boost/fusion/view/single_view/detail/value_at_impl.hpp>
Chris@16: #include <boost/mpl/bool.hpp>
Chris@16: #include <boost/mpl/int.hpp>
Chris@16: #include <boost/config.hpp>
Chris@16: 
Chris@16: #if defined (BOOST_MSVC)
Chris@16: #  pragma warning(push)
Chris@16: #  pragma warning (disable: 4512) // assignment operator could not be generated.
Chris@16: #endif
Chris@16: 
Chris@16: namespace boost { namespace fusion
Chris@16: {
Chris@16:     struct single_view_tag;
Chris@16:     struct random_access_traversal_tag;
Chris@16:     struct fusion_sequence_tag;
Chris@16: 
Chris@16:     template <typename T>
Chris@16:     struct single_view : sequence_base<single_view<T> >
Chris@16:     {
Chris@16:         typedef single_view_tag fusion_tag;
Chris@16:         typedef fusion_sequence_tag tag; // this gets picked up by MPL
Chris@16:         typedef random_access_traversal_tag category;
Chris@16:         typedef mpl::true_ is_view;
Chris@16:         typedef mpl::int_<1> size;
Chris@16:         typedef T value_type;
Chris@16: 
Chris@101:         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         single_view()
Chris@16:             : val() {}
Chris@16: 
Chris@101:         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         explicit single_view(typename detail::call_param<T>::type in_val)
Chris@16:             : val(in_val) {}
Chris@16: 
Chris@16:         value_type val;
Chris@16:     };
Chris@16:     
Chris@16:     template <typename T>
Chris@101:     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:     inline single_view<typename detail::as_fusion_element<T>::type>
Chris@16:     make_single_view(T const& v)
Chris@16:     {
Chris@16:         return single_view<typename detail::as_fusion_element<T>::type>(v);
Chris@16:     }
Chris@16: }}
Chris@16: 
Chris@16: #if defined (BOOST_MSVC)
Chris@16: #  pragma warning(pop)
Chris@16: #endif
Chris@16: 
Chris@16: #endif
Chris@16: 
Chris@16: