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- /*=============================================================================
- Copyright (c) 2012-2014 Kohei Takahashi
- 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_BUILD_CONS_10172012_0130)
- #define BOOST_FUSION_BUILD_CONS_10172012_0130
- #include <boost/tuple/tuple.hpp>
- #include <boost/fusion/iterator/equal_to.hpp>
- #include <boost/fusion/iterator/next.hpp>
- #include <boost/fusion/iterator/value_of.hpp>
- #include <boost/fusion/iterator/deref.hpp>
- namespace boost { namespace fusion { namespace detail
- {
- template <
- typename First
- , typename Last
- , bool is_empty = result_of::equal_to<First, Last>::value>
- struct build_tuple_cons;
- template <typename First, typename Last>
- struct build_tuple_cons<First, Last, true>
- {
- typedef boost::tuples::null_type type;
- BOOST_FUSION_GPU_ENABLED
- static type
- call(First const&, Last const&)
- {
- return type();
- }
- };
- template <typename First, typename Last>
- struct build_tuple_cons<First, Last, false>
- {
- typedef
- build_tuple_cons<typename result_of::next<First>::type, Last>
- next_build_tuple_cons;
- typedef boost::tuples::cons<
- typename result_of::value_of<First>::type
- , typename next_build_tuple_cons::type>
- type;
- BOOST_FUSION_GPU_ENABLED
- static type
- call(First const& f, Last const& l)
- {
- typename result_of::value_of<First>::type v = *f;
- return type(v, next_build_tuple_cons::call(fusion::next(f), l));
- }
- };
- }}}
- #endif
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