/*============================================================================= Copyright (c) 2001-2003 Joel de Guzman Use, modification and distribution is subject to 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(FUSION_SEQUENCE_DETAIL_TUPLE_BUILDER_HPP) #define FUSION_SEQUENCE_DETAIL_TUPLE_BUILDER_HPP #include <boost/spirit/fusion/detail/config.hpp> #include <boost/spirit/fusion/sequence/limits.hpp> // include tuple0..N where N is FUSION_MAX_TUPLE_SIZE #include <boost/spirit/fusion/sequence/tuple10.hpp> #if (FUSION_MAX_TUPLE_SIZE > 10) #include <boost/spirit/fusion/sequence/tuple20.hpp> #endif #if (FUSION_MAX_TUPLE_SIZE > 20) #include <boost/spirit/fusion/sequence/tuple30.hpp> #endif #if (FUSION_MAX_TUPLE_SIZE > 30) #include <boost/spirit/fusion/sequence/tuple40.hpp> #endif #if (FUSION_MAX_TUPLE_SIZE > 40) #include <boost/spirit/fusion/sequence/tuple50.hpp> #endif #include <boost/mpl/not.hpp> #include <boost/mpl/distance.hpp> #include <boost/mpl/find.hpp> #include <boost/mpl/begin_end.hpp> #include <boost/preprocessor/cat.hpp> #include <boost/preprocessor/repetition/enum_params.hpp> #include <boost/preprocessor/repetition/repeat_from_to.hpp> namespace boost { namespace fusion { struct void_t; }} namespace boost { namespace fusion { namespace detail { template <int N> struct get_tuple_n; template <> struct get_tuple_n<0> { template <BOOST_PP_ENUM_PARAMS(FUSION_MAX_TUPLE_SIZE, typename T)> struct call { typedef tuple0 type; }; }; #define FUSION_GET_TUPLE_N(z, n, _) \ template <> \ struct get_tuple_n<n> \ { \ template <BOOST_PP_ENUM_PARAMS(FUSION_MAX_TUPLE_SIZE, typename T)> \ struct call \ { \ typedef BOOST_PP_CAT(tuple, n)<BOOST_PP_ENUM_PARAMS(n, T)> type; \ }; \ }; BOOST_PP_REPEAT_FROM_TO(1, FUSION_MAX_TUPLE_SIZE, FUSION_GET_TUPLE_N, _) #undef FUSION_GET_TUPLE_N template <BOOST_PP_ENUM_PARAMS(FUSION_MAX_TUPLE_SIZE, typename T)> struct tuple_builder { typedef mpl::BOOST_PP_CAT(vector, FUSION_MAX_TUPLE_SIZE) <BOOST_PP_ENUM_PARAMS(FUSION_MAX_TUPLE_SIZE, T)> input; typedef typename mpl::begin<input>::type begin; typedef typename mpl::find<input, void_t>::type end; typedef typename mpl::distance<begin, end>::type size; typedef typename get_tuple_n<FUSION_GET_VALUE(size)>::template call<BOOST_PP_ENUM_PARAMS(FUSION_MAX_TUPLE_SIZE, T)>::type type; }; }}} #endif