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Diffstat (limited to 'boost/fusion/algorithm/transformation/push_front.hpp')
| -rw-r--r-- | boost/fusion/algorithm/transformation/push_front.hpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/boost/fusion/algorithm/transformation/push_front.hpp b/boost/fusion/algorithm/transformation/push_front.hpp new file mode 100644 index 0000000000..d08ad27987 --- /dev/null +++ b/boost/fusion/algorithm/transformation/push_front.hpp @@ -0,0 +1,39 @@ +/*============================================================================= + Copyright (c) 2001-2011 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_PUSH_FRONT_07162005_0749) +#define FUSION_PUSH_FRONT_07162005_0749 + +#include <boost/fusion/support/detail/as_fusion_element.hpp> +#include <boost/fusion/view/joint_view/joint_view.hpp> +#include <boost/fusion/view/single_view/single_view.hpp> + +namespace boost { namespace fusion +{ + namespace result_of + { + template <typename Sequence, typename T> + struct push_front + { + typedef fusion::single_view<typename detail::as_fusion_element<T>::type> single_view; + typedef joint_view<single_view const, Sequence> type; + }; + } + + template <typename Sequence, typename T> + inline typename result_of::push_front<Sequence const, T>::type + push_front(Sequence const& seq, T const& x) + { + typedef typename result_of::push_front<Sequence const, T> push_front; + typedef typename push_front::single_view single_view; + typedef typename push_front::type result; + single_view x_(x); + return result(x_, seq); + } +}} + +#endif + |