Updated boost to v1.55.0

[rsem.git] / boost / fusion / adapted / mpl / mpl_iterator.hpp

diff --git a/boost/fusion/adapted/mpl/mpl_iterator.hpp b/boost/fusion/adapted/mpl/mpl_iterator.hpp
new file mode 100644 (file)
index 0000000..7caa8ea
--- /dev/null
+++ b/boost/fusion/adapted/mpl/mpl_iterator.hpp
@@ -0,0 +1,113 @@
+/*=============================================================================
+    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_MPL_ITERATOR_05052005_0731)
+#define FUSION_MPL_ITERATOR_05052005_0731
+
+#include <boost/fusion/support/detail/mpl_iterator_category.hpp>
+#include <boost/fusion/iterator/iterator_facade.hpp>
+#include <boost/type_traits/remove_const.hpp>
+#include <boost/mpl/deref.hpp>
+#include <boost/mpl/next.hpp>
+#include <boost/mpl/prior.hpp>
+#include <boost/mpl/advance.hpp>
+#include <boost/mpl/distance.hpp>
+
+namespace boost { namespace fusion
+{
+    template <typename Iterator_>
+    struct mpl_iterator
+        : iterator_facade<
+            mpl_iterator<Iterator_>
+          , typename detail::mpl_iterator_category<typename Iterator_::category>::type
+        >
+    {
+        typedef typename remove_const<Iterator_>::type iterator_type;
+
+        template <typename Iterator>
+        struct value_of : mpl::deref<typename Iterator::iterator_type> {};
+
+        template <typename Iterator>
+        struct deref
+        {
+            typedef typename mpl::deref<
+                typename Iterator::iterator_type>::type
+            type;
+
+            static type
+            call(Iterator)
+            {
+                return type();
+            }
+        };
+
+        template <typename Iterator>
+        struct next
+        {
+            typedef mpl_iterator<
+                typename mpl::next<typename Iterator::iterator_type>::type> 
+            type;
+
+            static type
+            call(Iterator)
+            {
+                return type();
+            }
+        };
+
+        template <typename Iterator>
+        struct prior
+        {
+            typedef mpl_iterator<
+                typename mpl::prior<typename Iterator::iterator_type>::type> 
+            type;
+
+            static type
+            call(Iterator)
+            {
+                return type();
+            }
+        };
+
+        template <typename Iterator, typename N>
+        struct advance
+        {
+            typedef mpl_iterator<
+                typename mpl::advance<typename Iterator::iterator_type, N>::type>
+            type;
+
+            static type
+            call(Iterator const& /*i*/)
+            {
+                return type();
+            }
+        };
+
+        template <typename I1, typename I2>
+        struct distance : 
+            mpl::distance<
+                typename I1::iterator_type
+              , typename I2::iterator_type>
+        {
+            typedef typename 
+                mpl::distance<
+                    typename I1::iterator_type
+                  , typename I2::iterator_type
+                >::type
+            type;
+            
+            static type
+            call(I1 const&, I2 const&)
+            {
+                return type();
+            }
+        };
+    };
+}}
+
+#endif
+
+