| /*============================================================================= |
| Copyright (c) 2011 Eric Niebler |
| |
| 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_S_HPP_INCLUDED) |
| #define BOOST_FUSION_FOLD_S_HPP_INCLUDED |
| |
| #include <boost/fusion/support/config.hpp> |
| #include <boost/fusion/algorithm/iteration/fold_fwd.hpp> |
| #include <boost/fusion/support/segmented_fold_until.hpp> |
| |
| namespace boost { namespace fusion { namespace detail |
| { |
| template <typename Fun> |
| struct segmented_fold_fun |
| { |
| BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED |
| explicit segmented_fold_fun(Fun const& f) |
| : fun(f) |
| {} |
| |
| Fun const& fun; |
| |
| template <typename Sequence, typename State, typename Context> |
| struct apply |
| { |
| typedef typename result_of::fold<Sequence, State, Fun>::type type; |
| typedef mpl::true_ continue_type; |
| |
| BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED |
| static type call(Sequence& seq, State const& state, Context const&, segmented_fold_fun const& fun) |
| { |
| return fusion::fold(seq, state, fun.fun); |
| } |
| }; |
| }; |
| |
| // The default implementation of this lives in detail/fold.hpp |
| template <typename Sequence, typename State, typename Fun, bool IsSegmented> |
| struct result_of_fold; |
| |
| template <typename Sequence, typename State, typename Fun> |
| struct result_of_fold<Sequence, State, Fun, true> |
| { |
| typedef |
| typename result_of::segmented_fold_until< |
| Sequence, |
| State, |
| segmented_fold_fun<Fun> |
| >::type |
| type; |
| |
| BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED |
| static type call(State& state, Sequence& seq, Fun fun) |
| { |
| return fusion::segmented_fold_until(seq, state, segmented_fold_fun<Fun>(fun)); |
| } |
| }; |
| }}} |
| |
| #endif |