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63 lines
2.6 KiB
63 lines
2.6 KiB
/*============================================================================= |
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Copyright (c) 2001-2011 Joel de Guzman |
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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(FUSION_INSERT_07222005_0730) |
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#define FUSION_INSERT_07222005_0730 |
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#include <boost/fusion/support/detail/as_fusion_element.hpp> |
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#include <boost/fusion/iterator/mpl/convert_iterator.hpp> |
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#include <boost/fusion/container/vector/vector10.hpp> |
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#include <boost/fusion/view/joint_view/joint_view.hpp> |
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#include <boost/fusion/view/single_view/single_view.hpp> |
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#include <boost/fusion/view/iterator_range/iterator_range.hpp> |
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#include <boost/fusion/sequence/intrinsic/begin.hpp> |
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#include <boost/fusion/sequence/intrinsic/end.hpp> |
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#include <boost/fusion/adapted/mpl/mpl_iterator.hpp> |
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namespace boost { namespace fusion |
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{ |
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namespace result_of |
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{ |
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template <typename Sequence, typename Position, typename T> |
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struct insert |
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{ |
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typedef typename detail::as_fusion_element<T>::type element_type; |
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typedef typename convert_iterator<Position>::type pos_type; |
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typedef typename result_of::begin<Sequence>::type first_type; |
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typedef typename result_of::end<Sequence>::type last_type; |
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typedef iterator_range<first_type, pos_type> left_type; |
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typedef iterator_range<pos_type, last_type> right_type; |
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typedef fusion::single_view<element_type> single_view; |
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typedef joint_view<left_type, single_view const> left_insert_type; |
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typedef joint_view<left_insert_type, right_type> type; |
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}; |
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} |
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template <typename Sequence, typename Position, typename T> |
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inline typename result_of::insert< |
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Sequence const, Position, T>::type |
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insert(Sequence const& seq, Position const& pos, T const& x) |
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{ |
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typedef result_of::insert< |
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Sequence const, Position, T> |
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result_of; |
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typedef typename result_of::left_type left_type; |
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typedef typename result_of::right_type right_type; |
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typedef typename result_of::single_view single_view; |
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typedef typename result_of::left_insert_type left_insert_type; |
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typedef typename result_of::type result; |
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left_type left(fusion::begin(seq), convert_iterator<Position>::call(pos)); |
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right_type right(convert_iterator<Position>::call(pos), fusion::end(seq)); |
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single_view insert(x); |
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left_insert_type left_insert(left, insert); |
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return result(left_insert, right); |
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} |
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}} |
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#endif |
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