| /*============================================================================= |
| 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_INSERT_07222005_0730) |
| #define FUSION_INSERT_07222005_0730 |
| |
| #include <boost/fusion/support/detail/as_fusion_element.hpp> |
| #include <boost/fusion/iterator/mpl/convert_iterator.hpp> |
| #include <boost/fusion/container/vector/vector10.hpp> |
| #include <boost/fusion/view/joint_view/joint_view.hpp> |
| #include <boost/fusion/view/single_view/single_view.hpp> |
| #include <boost/fusion/view/iterator_range/iterator_range.hpp> |
| #include <boost/fusion/sequence/intrinsic/begin.hpp> |
| #include <boost/fusion/sequence/intrinsic/end.hpp> |
| #include <boost/fusion/adapted/mpl/mpl_iterator.hpp> |
| |
| namespace boost { namespace fusion |
| { |
| namespace result_of |
| { |
| template <typename Sequence, typename Position, typename T> |
| struct insert |
| { |
| typedef typename detail::as_fusion_element<T>::type element_type; |
| typedef typename convert_iterator<Position>::type pos_type; |
| typedef typename result_of::begin<Sequence>::type first_type; |
| typedef typename result_of::end<Sequence>::type last_type; |
| |
| typedef iterator_range<first_type, pos_type> left_type; |
| typedef iterator_range<pos_type, last_type> right_type; |
| typedef fusion::single_view<element_type> single_view; |
| typedef joint_view<left_type, single_view const> left_insert_type; |
| typedef joint_view<left_insert_type, right_type> type; |
| }; |
| } |
| |
| template <typename Sequence, typename Position, typename T> |
| inline typename result_of::insert< |
| Sequence const, Position, T>::type |
| insert(Sequence const& seq, Position const& pos, T const& x) |
| { |
| typedef result_of::insert< |
| Sequence const, Position, T> |
| result_of; |
| typedef typename result_of::left_type left_type; |
| typedef typename result_of::right_type right_type; |
| typedef typename result_of::single_view single_view; |
| typedef typename result_of::left_insert_type left_insert_type; |
| typedef typename result_of::type result; |
| |
| left_type left(fusion::begin(seq), convert_iterator<Position>::call(pos)); |
| right_type right(convert_iterator<Position>::call(pos), fusion::end(seq)); |
| single_view insert(x); |
| left_insert_type left_insert(left, insert); |
| return result(left_insert, right); |
| } |
| }} |
| |
| #endif |
| |