comparison DEPENDENCIES/generic/include/boost/fusion/sequence/intrinsic/swap.hpp @ 16:2665513ce2d3

Add boost headers

+/*=============================================================================
+    Copyright (c) 2001-2011 Joel de Guzman
+    Copyright (c) 2006 Dan Marsden
+
+    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_SWAP_20070501_1956)
+#define BOOST_FUSION_SWAP_20070501_1956
+
+#include <algorithm>
+
+#include <boost/fusion/support/is_sequence.hpp>
+#include <boost/fusion/view/zip_view.hpp>
+#include <boost/fusion/algorithm/iteration/for_each.hpp>
+#include <boost/utility/enable_if.hpp>
+#include <boost/fusion/sequence/intrinsic/front.hpp>
+#include <boost/fusion/sequence/intrinsic/back.hpp>
+#include <boost/mpl/and.hpp>
+
+namespace boost { namespace fusion {
+    namespace result_of
+    {
+        template<typename Seq1, typename Seq2>
+        struct swap
+        {
+            typedef void type;
+        };
+    }
+
+    namespace detail
+    {
+        struct swap
+        {
+            template<typename Elem>
+            struct result
+            {
+                typedef void type;
+            };
+
+            template<typename Elem>
+            void operator()(Elem const& e) const
+            {
+                using std::swap;
+                swap(front(e), back(e));
+            }
+        };
+    }
+
+    template<typename Seq1, typename Seq2>
+    typename enable_if<mpl::and_<traits::is_sequence<Seq1>, traits::is_sequence<Seq2> >, void>::type 
+    swap(Seq1& lhs, Seq2& rhs)
+    {
+        typedef vector<Seq1&, Seq2&> references;
+        for_each(zip_view<references>(references(lhs, rhs)), detail::swap());
+    }
+}}
+
+#endif