| /*============================================================================= |
| Copyright (c) 2001-2006 Joel de Guzman |
| |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| ==============================================================================*/ |
| #if !defined(FUSION_SINGLE_VIEW_05052005_0335) |
| #define FUSION_SINGLE_VIEW_05052005_0335 |
| |
| #include <boost/fusion/support/detail/access.hpp> |
| #include <boost/fusion/support/detail/as_fusion_element.hpp> |
| #include <boost/fusion/support/sequence_base.hpp> |
| #include <boost/fusion/view/single_view/single_view_iterator.hpp> |
| #include <boost/fusion/view/single_view/detail/begin_impl.hpp> |
| #include <boost/fusion/view/single_view/detail/end_impl.hpp> |
| #include <boost/mpl/bool.hpp> |
| #include <boost/mpl/int.hpp> |
| #include <boost/config.hpp> |
| |
| #if defined (BOOST_MSVC) |
| # pragma warning(push) |
| # pragma warning (disable: 4512) // assignment operator could not be generated. |
| #endif |
| |
| namespace boost { namespace fusion |
| { |
| struct single_view_tag; |
| struct forward_traversal_tag; |
| struct fusion_sequence_tag; |
| |
| template <typename T> |
| struct single_view : sequence_base<single_view<T> > |
| { |
| typedef single_view_tag fusion_tag; |
| typedef fusion_sequence_tag tag; // this gets picked up by MPL |
| typedef forward_traversal_tag category; |
| typedef mpl::true_ is_view; |
| typedef mpl::int_<1> size; |
| typedef T value_type; |
| |
| single_view() |
| : val() {} |
| |
| explicit single_view(typename detail::call_param<T>::type in_val) |
| : val(in_val) {} |
| |
| value_type val; |
| }; |
| |
| template <typename T> |
| inline single_view<typename detail::as_fusion_element<T>::type> |
| make_single_view(T const& v) |
| { |
| return single_view<typename detail::as_fusion_element<T>::type>(v); |
| } |
| }} |
| |
| #if defined (BOOST_MSVC) |
| # pragma warning(pop) |
| #endif |
| |
| #endif |
| |
| |