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