1 /*============================================================================= 2 Copyright (c) 2014-2015 Kohei Takahashi 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 #ifndef FUSION_AS_SET_11062014_2121 8 #define FUSION_AS_SET_11062014_2121 9 10 #include <boost/fusion/support/config.hpp> 11 #include <boost/fusion/container/set/set_fwd.hpp> 12 13 /////////////////////////////////////////////////////////////////////////////// 14 // Without variadics, we will use the PP version 15 /////////////////////////////////////////////////////////////////////////////// 16 #if !defined(BOOST_FUSION_HAS_VARIADIC_SET) 17 # include <boost/fusion/container/set/detail/cpp03/as_set.hpp> 18 #else 19 20 /////////////////////////////////////////////////////////////////////////////// 21 // C++11 interface 22 /////////////////////////////////////////////////////////////////////////////// 23 #include <boost/fusion/support/detail/index_sequence.hpp> 24 #include <boost/fusion/container/set/set.hpp> 25 #include <boost/fusion/iterator/value_of.hpp> 26 #include <boost/fusion/iterator/deref.hpp> 27 #include <boost/fusion/iterator/advance.hpp> 28 #include <cstddef> 29 30 namespace boost { namespace fusion { namespace detail 31 { 32 BOOST_FUSION_BARRIER_BEGIN 33 34 template <int size 35 , typename = typename detail::make_index_sequence<size>::type> 36 struct as_set; 37 38 template <int size, std::size_t ...Indices> 39 struct as_set<size, detail::index_sequence<Indices...> > 40 { 41 template <typename I> 42 struct apply 43 { 44 typedef set< 45 typename result_of::value_of< 46 typename result_of::advance_c<I, Indices>::type 47 >::type... 48 > type; 49 }; 50 51 template <typename Iterator> 52 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED 53 static typename apply<Iterator>::type callboost::fusion::detail::as_set54 call(Iterator const& i) 55 { 56 typedef apply<Iterator> gen; 57 typedef typename gen::type result; 58 return result(*advance_c<Indices>(i)...); 59 } 60 }; 61 62 BOOST_FUSION_BARRIER_END 63 }}} 64 65 #endif 66 #endif 67 68