Updated boost to v1.55.0

[rsem.git] / boost / fusion / view / joint_view / joint_view.hpp

diff --git a/boost/fusion/view/joint_view/joint_view.hpp b/boost/fusion/view/joint_view/joint_view.hpp
new file mode 100644 (file)
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+++ b/boost/fusion/view/joint_view/joint_view.hpp
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+/*=============================================================================
+    Copyright (c) 2001-2011 Joel de Guzman
+
+    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(FUSION_JOINT_VIEW_07162005_0140)
+#define FUSION_JOINT_VIEW_07162005_0140
+
+#include <boost/fusion/view/joint_view/joint_view_fwd.hpp>
+#include <boost/fusion/support/detail/access.hpp>
+#include <boost/fusion/support/is_view.hpp>
+#include <boost/fusion/sequence/intrinsic/begin.hpp>
+#include <boost/fusion/sequence/intrinsic/end.hpp>
+#include <boost/fusion/sequence/intrinsic/size.hpp>
+#include <boost/fusion/view/joint_view/joint_view_iterator.hpp>
+#include <boost/fusion/view/joint_view/detail/begin_impl.hpp>
+#include <boost/fusion/view/joint_view/detail/end_impl.hpp>
+#include <boost/fusion/support/sequence_base.hpp>
+#include <boost/mpl/if.hpp>
+#include <boost/mpl/plus.hpp>
+#include <boost/mpl/bool.hpp>
+#include <boost/mpl/eval_if.hpp>
+#include <boost/mpl/inherit.hpp>
+#include <boost/mpl/identity.hpp>
+
+namespace boost { namespace fusion
+{
+    struct joint_view_tag;
+    struct forward_traversal_tag;
+    struct fusion_sequence_tag;
+
+    template <typename Sequence1, typename Sequence2>
+    struct joint_view : sequence_base<joint_view<Sequence1, Sequence2> >
+    {
+        typedef joint_view_tag fusion_tag;
+        typedef fusion_sequence_tag tag; // this gets picked up by MPL
+        typedef typename
+            mpl::eval_if<
+                mpl::and_<
+                    traits::is_associative<Sequence1>
+                  , traits::is_associative<Sequence2>
+                >
+              , mpl::inherit2<forward_traversal_tag,associative_tag>
+              , mpl::identity<forward_traversal_tag>
+            >::type
+        category;
+        typedef mpl::true_ is_view;
+
+        typedef typename result_of::begin<Sequence1>::type first_type;
+        typedef typename result_of::end<Sequence1>::type last_type;
+        typedef typename result_of::begin<Sequence2>::type concat_type;
+        typedef typename result_of::end<Sequence2>::type concat_last_type;
+        typedef typename mpl::int_<
+            result_of::size<Sequence1>::value + result_of::size<Sequence2>::value>
+        size;
+
+        joint_view(Sequence1& in_seq1, Sequence2& in_seq2)
+            : seq1(in_seq1)
+            , seq2(in_seq2)
+        {}
+
+        first_type first() const { return fusion::begin(seq1); }
+        concat_type concat() const { return fusion::begin(seq2); }
+        concat_last_type concat_last() const { return fusion::end(seq2); }
+
+    private:
+        // silence MSVC warning C4512: assignment operator could not be generated
+        joint_view& operator= (joint_view const&);
+
+        typename mpl::if_<traits::is_view<Sequence1>, Sequence1, Sequence1&>::type seq1;
+        typename mpl::if_<traits::is_view<Sequence2>, Sequence2, Sequence2&>::type seq2;
+    };
+}}
+
+#endif
+
+