/*============================================================================= | |
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 | |