Initial Commit

2018-02-08 21:28:33 -05:00
commit 678c1d3966
14352 changed files with 3176737 additions and 0 deletions
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+/*=============================================================================
+    Copyright (c) 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_STD_TUPLE_05292014_0100)
+#define BOOST_FUSION_BUILD_STD_TUPLE_05292014_0100
+
+#include <boost/fusion/support/config.hpp>
+#include <boost/fusion/support/detail/index_sequence.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>
+#include <tuple>
+#include <cstddef>
+
+namespace boost { namespace fusion { namespace detail
+{
+    template <typename First, typename Last,
+              bool is_empty = result_of::equal_to<First, Last>::value>
+    struct build_std_tuple;
+
+    template <typename First, typename Last>
+    struct build_std_tuple<First, Last, true>
+    {
+        typedef std::tuple<> type;
+
+        BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+        static type
+        call(First const&, Last const&)
+        {
+            return type();
+        }
+    };
+
+    template <typename T, typename Rest>
+    struct push_front_std_tuple;
+
+    template <typename T, typename ...Rest>
+    struct push_front_std_tuple<T, std::tuple<Rest...> >
+    {
+        typedef std::tuple<T, Rest...> type;
+
+        template <std::size_t ...I>
+        BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+        static type
+        indexed_call(T const& first, std::tuple<Rest...> const& rest, index_sequence<I...>)
+        {
+            return type(first, std::get<I>(rest)...);
+        }
+
+        BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+        static type
+        call(T const& first, std::tuple<Rest...> const& rest)
+        {
+            typedef typename make_index_sequence<sizeof...(Rest)>::type gen;
+            return indexed_call(first, rest, gen());
+        }
+    };
+
+    template <typename First, typename Last>
+    struct build_std_tuple<First, Last, false>
+    {
+        typedef
+            build_std_tuple<typename result_of::next<First>::type, Last>
+        next_build_std_tuple;
+
+        typedef push_front_std_tuple<
+            typename result_of::value_of<First>::type
+          , typename next_build_std_tuple::type>
+        push_front;
+
+        typedef typename push_front::type type;
+
+        BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+        static type
+        call(First const& f, Last const& l)
+        {
+            typename result_of::value_of<First>::type v = *f;
+            return push_front::call(
+                v, next_build_std_tuple::call(fusion::next(f), l));
+        }
+    };
+}}}
+
+#endif