66 lines
2.3 KiB
Plaintext
66 lines
2.3 KiB
Plaintext
//---------------------------------------------------------------------------//
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// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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// See http://boostorg.github.com/compute for more information.
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//---------------------------------------------------------------------------//
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#ifndef BOOST_COMPUTE_DETAIL_MPL_VECTOR_TO_TUPLE_HPP
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#define BOOST_COMPUTE_DETAIL_MPL_VECTOR_TO_TUPLE_HPP
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#include <boost/mpl/copy.hpp>
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#include <boost/mpl/vector.hpp>
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#include <boost/tuple/tuple.hpp>
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#include <boost/fusion/include/mpl.hpp>
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#include <boost/fusion/adapted/boost_tuple.hpp>
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#include <boost/preprocessor/repetition.hpp>
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#include <boost/compute/config.hpp>
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namespace boost {
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namespace compute {
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namespace detail {
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namespace mpl = boost::mpl;
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template<class Vector, size_t N>
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struct mpl_vector_to_tuple_impl;
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#define BOOST_COMPUTE_PRINT_ELEM(z, n, unused) \
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typename mpl::at_c<Vector, n>::type
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#define BOOST_COMPUTE_VEC2TUP(z, n, unused) \
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template<class Vector> \
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struct mpl_vector_to_tuple_impl<Vector, n> \
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{ \
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typedef typename \
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boost::tuple< \
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BOOST_PP_ENUM(n, BOOST_COMPUTE_PRINT_ELEM, ~) \
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> type; \
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};
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BOOST_PP_REPEAT_FROM_TO(1, BOOST_COMPUTE_MAX_ARITY, BOOST_COMPUTE_VEC2TUP, ~)
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#undef BOOST_COMPUTE_VEC2TUP
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#undef BOOST_COMPUTE_PRINT_ELEM
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// meta-function which converts a mpl::vector to a boost::tuple
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template<class Vector>
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struct mpl_vector_to_tuple
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{
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typedef typename
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mpl_vector_to_tuple_impl<
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Vector,
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mpl::size<Vector>::value
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>::type type;
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};
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} // end detail namespace
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} // end compute namespace
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} // end boost namespace
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#endif // BOOST_COMPUTE_DETAIL_MPL_VECTOR_TO_TUPLE_HPP
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