X-Git-Url: https://git.donarmstrong.com/?p=rsem.git;a=blobdiff_plain;f=boost%2Ffusion%2Fview%2Fsingle_view%2Fdetail%2Fat_impl.hpp;fp=boost%2Ffusion%2Fview%2Fsingle_view%2Fdetail%2Fat_impl.hpp;h=3e0915fce65471f01011c46f9f16fe2747365d90;hp=0000000000000000000000000000000000000000;hb=2d71eb92104693ca9baa5a2e1c23eeca776d8fd3;hpb=da57529b92adbb7ae74a89861cb39fb35ac7c62d

diff --git a/boost/fusion/view/single_view/detail/at_impl.hpp b/boost/fusion/view/single_view/detail/at_impl.hpp
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+++ b/boost/fusion/view/single_view/detail/at_impl.hpp
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+/*=============================================================================
+    Copyright (c) 2011 Eric Niebler
+
+    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_SINGLE_VIEW_AT_IMPL_JUL_07_2011_1348PM)
+#define BOOST_FUSION_SINGLE_VIEW_AT_IMPL_JUL_07_2011_1348PM
+
+#include <boost/mpl/int.hpp>
+#include <boost/mpl/assert.hpp>
+#include <boost/mpl/equal_to.hpp>
+
+namespace boost { namespace fusion 
+{
+    struct single_view_tag;
+
+    namespace extension
+    {
+        template<typename Tag>
+        struct at_impl;
+
+        template<>
+        struct at_impl<single_view_tag>
+        {
+            template<typename Sequence, typename N>
+            struct apply
+            {
+                BOOST_MPL_ASSERT((mpl::equal_to<N, mpl::int_<0> >));
+                typedef typename Sequence::value_type type;
+
+                static type 
+                call(Sequence& seq)
+                {
+                    return seq.val;
+                }
+            };
+        };
+    }
+
+}}
+
+#endif