Initial Commit

2018-02-08 21:28:33 -05:00
commit 678c1d3966
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+//---------------------------------------------------------------------------//
+// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
+//
+// 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
+//
+// See http://boostorg.github.com/compute for more information.
+//---------------------------------------------------------------------------//
+
+#ifndef BOOST_COMPUTE_DETAIL_MPL_VECTOR_TO_TUPLE_HPP
+#define BOOST_COMPUTE_DETAIL_MPL_VECTOR_TO_TUPLE_HPP
+
+#include <boost/mpl/copy.hpp>
+#include <boost/mpl/vector.hpp>
+#include <boost/tuple/tuple.hpp>
+#include <boost/fusion/include/mpl.hpp>
+#include <boost/fusion/adapted/boost_tuple.hpp>
+#include <boost/preprocessor/repetition.hpp>
+
+#include <boost/compute/config.hpp>
+
+namespace boost {
+namespace compute {
+namespace detail {
+
+namespace mpl = boost::mpl;
+
+template<class Vector, size_t N>
+struct mpl_vector_to_tuple_impl;
+
+#define BOOST_COMPUTE_PRINT_ELEM(z, n, unused)                                 \
+    typename mpl::at_c<Vector, n>::type
+
+#define BOOST_COMPUTE_VEC2TUP(z, n, unused)                                    \
+template<class Vector>                                                         \
+struct mpl_vector_to_tuple_impl<Vector, n>                                     \
+{                                                                              \
+    typedef typename                                                           \
+        boost::tuple<                                                          \
+            BOOST_PP_ENUM(n, BOOST_COMPUTE_PRINT_ELEM, ~)                      \
+        > type;                                                                \
+};
+
+BOOST_PP_REPEAT_FROM_TO(1, BOOST_COMPUTE_MAX_ARITY, BOOST_COMPUTE_VEC2TUP, ~)
+
+#undef BOOST_COMPUTE_VEC2TUP
+#undef BOOST_COMPUTE_PRINT_ELEM
+
+// meta-function which converts a mpl::vector to a boost::tuple
+template<class Vector>
+struct mpl_vector_to_tuple
+{
+    typedef typename
+        mpl_vector_to_tuple_impl<
+            Vector,
+            mpl::size<Vector>::value
+        >::type type;
+};
+
+} // end detail namespace
+} // end compute namespace
+} // end boost namespace
+
+#endif // BOOST_COMPUTE_DETAIL_MPL_VECTOR_TO_TUPLE_HPP