| /*============================================================================= |
| Copyright (c) 2001-2007 Joel de Guzman |
| Copyright (c) 2007 Dan Marsden |
| |
| 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(BOOST_FUSION_FOLD_05052005_1214) |
| #define BOOST_FUSION_FOLD_05052005_1214 |
| |
| #include <boost/fusion/algorithm/iteration/detail/fold.hpp> |
| #include <boost/fusion/sequence/intrinsic/size.hpp> |
| #include <boost/fusion/support/category_of.hpp> |
| |
| #include <boost/type_traits/is_base_of.hpp> |
| #include <boost/static_assert.hpp> |
| |
| namespace boost { namespace fusion { |
| |
| struct random_access_traversal_tag; |
| |
| namespace result_of |
| { |
| template <typename Sequence, typename State, typename F> |
| struct fold |
| : fusion::detail::choose_fold< |
| Sequence, State, F |
| , is_base_of<random_access_traversal_tag, typename traits::category_of<Sequence>::type>::value> |
| {}; |
| } |
| |
| template <typename Sequence, typename State, typename F> |
| inline typename result_of::fold<Sequence, State, F>::type |
| fold(Sequence& seq, State const& state, F f) |
| { |
| return detail::fold(seq, state, f, typename traits::category_of<Sequence>::type()); |
| } |
| |
| template <typename Sequence, typename State, typename F> |
| inline typename result_of::fold<Sequence const, State, F>::type |
| fold(Sequence const& seq, State const& state, F f) |
| { |
| return detail::fold(seq, state, f, typename traits::category_of<Sequence>::type()); |
| } |
| }} |
| |
| #endif |
| |