Updated boost to v1.55.0

[rsem.git] / boost / fusion / iterator / mpl / fusion_iterator.hpp

diff --git a/boost/fusion/iterator/mpl/fusion_iterator.hpp b/boost/fusion/iterator/mpl/fusion_iterator.hpp
new file mode 100644 (file)
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+++ b/boost/fusion/iterator/mpl/fusion_iterator.hpp
@@ -0,0 +1,79 @@
+/*=============================================================================
+    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_FUSION_ITERATOR_10012005_1551)
+#define FUSION_FUSION_ITERATOR_10012005_1551
+
+#include <boost/fusion/iterator/value_of.hpp>
+#include <boost/fusion/iterator/next.hpp>
+#include <boost/fusion/iterator/prior.hpp>
+#include <boost/fusion/iterator/advance.hpp>
+#include <boost/fusion/iterator/distance.hpp>
+#include <boost/fusion/support/category_of.hpp>
+#include <boost/mpl/next_prior.hpp>
+#include <boost/mpl/advance_fwd.hpp>
+#include <boost/mpl/distance_fwd.hpp>
+#include <boost/mpl/iterator_tags.hpp>
+#include <boost/mpl/eval_if.hpp>
+#include <boost/type_traits/is_base_of.hpp>
+
+namespace boost { namespace fusion { namespace detail
+{
+
+template<class Category>
+struct to_mpl_category {
+    typedef typename mpl::eval_if<
+        is_base_of<random_access_traversal_tag, Category>,
+        mpl::random_access_iterator_tag,
+        mpl::eval_if<
+            is_base_of<bidirectional_traversal_tag, Category>,
+            mpl::bidirectional_iterator_tag,
+            mpl::forward_iterator_tag
+        >
+    >::type type;
+};
+
+}}}
+
+namespace boost { namespace mpl
+{
+    template <typename Iterator>
+    struct fusion_iterator
+    {
+        typedef typename fusion::result_of::value_of<Iterator>::type type;
+        typedef typename fusion::traits::category_of<Iterator>::type fusion_category;
+        typedef typename fusion::detail::to_mpl_category<fusion_category>::type category;
+        typedef Iterator iterator;
+    };
+
+    template <typename Iterator>
+    struct next<fusion_iterator<Iterator> >
+    {
+        typedef fusion_iterator<typename fusion::result_of::next<Iterator>::type> type;
+    };
+
+    template <typename Iterator>
+    struct prior<fusion_iterator<Iterator> >
+    {
+        typedef fusion_iterator<typename fusion::result_of::prior<Iterator>::type> type;
+    };
+
+    template <typename Iterator, typename N>
+    struct advance<fusion_iterator<Iterator>, N>
+    {
+        typedef fusion_iterator<typename fusion::result_of::advance<Iterator, N>::type> type;
+    };
+
+    template <typename First, typename Last>
+    struct distance<fusion_iterator<First>, fusion_iterator<Last> >
+        : fusion::result_of::distance<First, Last>
+    {};
+
+}}
+
+#endif
+
+