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_SEGMENTED_FOR_EACH_HPP_INCLUDED) 8 #define BOOST_FUSION_SEGMENTED_FOR_EACH_HPP_INCLUDED 9 10 #include <boost/fusion/support/config.hpp> 11 #include <boost/mpl/bool.hpp> 12 #include <boost/fusion/support/void.hpp> 13 #include <boost/fusion/algorithm/iteration/for_each_fwd.hpp> 14 #include <boost/fusion/support/segmented_fold_until.hpp> 15 16 namespace boost { namespace fusion { namespace detail 17 { 18 template <typename Fun> 19 struct segmented_for_each_fun 20 { 21 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED segmented_for_each_funboost::fusion::detail::segmented_for_each_fun22 explicit segmented_for_each_fun(Fun& f) 23 : fun(f) 24 {} 25 26 Fun& fun; 27 28 template <typename Sequence, typename State, typename Context> 29 struct apply 30 { 31 typedef void_ type; 32 typedef mpl::true_ continue_type; 33 34 BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED callboost::fusion::detail::segmented_for_each_fun::apply35 static type call(Sequence& seq, State const&, Context const&, segmented_for_each_fun const& fun) 36 { 37 fusion::for_each(seq, fun.fun); 38 return void_(); 39 } 40 }; 41 }; 42 43 template <typename Sequence, typename F> 44 BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED 45 inline void for_each(Sequence & seq,F & f,mpl::true_)46 for_each(Sequence& seq, F& f, mpl::true_) // segmented implementation 47 { 48 fusion::segmented_fold_until(seq, void_(), segmented_for_each_fun<F>(f)); 49 } 50 }}} 51 52 #endif 53