Initial Commit

2018-02-08 21:28:33 -05:00
commit 678c1d3966
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+/*=============================================================================
+    Copyright (c) 2001-2011 Joel de Guzman
+    Copyright (c) 2005-2006 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_CATEGORY_OF_IMPL_20060217_2141)
+#define BOOST_FUSION_CATEGORY_OF_IMPL_20060217_2141
+
+#include <boost/fusion/support/config.hpp>
+#include <boost/fusion/support/detail/mpl_iterator_category.hpp>
+#include <boost/mpl/begin_end.hpp>
+#include <boost/mpl/is_sequence.hpp>
+#include <boost/static_assert.hpp>
+
+namespace boost { namespace fusion {
+
+    namespace detail
+    {
+        template <typename T>
+        struct mpl_sequence_category_of
+        {
+            // assumes T is an mpl sequence
+            // there should be no way this will ever be
+            // called where T is an mpl iterator
+        
+            BOOST_STATIC_ASSERT(mpl::is_sequence<T>::value);
+            typedef typename 
+                mpl_iterator_category<
+                    typename mpl::begin<T>::type::category
+                >::type
+            type;
+        };
+    }
+
+    struct mpl_sequence_tag;
+
+    namespace extension
+    {
+        template<typename Tag>
+        struct category_of_impl;
+
+        template<>
+        struct category_of_impl<mpl_sequence_tag>
+        {
+            template<typename T>
+            struct apply
+                : detail::mpl_sequence_category_of<T>
+            {};
+        };
+    }
+}}
+
+#endif