projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /*============================================================================= |
| 2 | Copyright (c) 2011 Eric Niebler | |
| 3 | ||
| 4 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
| 5 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
| 6 | ==============================================================================*/ | |
| 7 | #if !defined(BOOST_FUSION_FOLD_S_HPP_INCLUDED) | |
| 8 | #define BOOST_FUSION_FOLD_S_HPP_INCLUDED | |
| 9 | ||
| 10 | #include <boost/fusion/support/config.hpp> | |
| 11 | #include <boost/fusion/algorithm/iteration/fold_fwd.hpp> | |
| 12 | #include <boost/fusion/support/segmented_fold_until.hpp> | |
| 13 | #include <boost/mpl/bool.hpp> | |
| 14 | ||
| 15 | namespace boost { namespace fusion { namespace detail | |
| 16 | { | |
| 17 | template <typename Fun> | |
| 18 | struct segmented_fold_fun | |
| 19 | { | |
| 20 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 21 | explicit segmented_fold_fun(Fun const& f) | |
| 22 | : fun(f) | |
| 23 | {} | |
| 24 | ||
| 25 | Fun const& fun; | |
| 26 | ||
| 27 | template <typename Sequence, typename State, typename Context> | |
| 28 | struct apply | |
| 29 | { | |
| 30 | typedef typename result_of::fold<Sequence, State, Fun>::type type; | |
| 31 | typedef mpl::true_ continue_type; | |
| 32 | ||
| 33 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 34 | static type call(Sequence& seq, State const& state, Context const&, segmented_fold_fun const& fun) | |
| 35 | { | |
| 36 | return fusion::fold(seq, state, fun.fun); | |
| 37 | } | |
| 38 | }; | |
| 39 | }; | |
| 40 | ||
| 41 | // The default implementation of this lives in detail/fold.hpp | |
| 42 | template <typename Sequence, typename State, typename Fun, bool IsSequence, bool IsSegmented> | |
| 43 | struct result_of_fold; | |
| 44 | ||
| 45 | template <typename Sequence, typename State, typename Fun> | |
| 46 | struct result_of_fold<Sequence, State, Fun, true, true> | |
| 47 | { | |
| 48 | typedef | |
| 49 | typename result_of::segmented_fold_until< | |
| 50 | Sequence, | |
| 51 | State, | |
| 52 | segmented_fold_fun<Fun> | |
| 53 | >::type | |
| 54 | type; | |
| 55 | ||
| 56 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 57 | static type call(Sequence& seq, State& state, Fun& fun) | |
| 58 | { | |
| 59 | return fusion::segmented_fold_until(seq, state, segmented_fold_fun<Fun>(fun)); | |
| 60 | } | |
| 61 | }; | |
| 62 | }}} | |
| 63 | ||
| 64 | #endif |