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+/////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2014-2014
+//
+// 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)
+//
+// See http://www.boost.org/libs/move for documentation.
+//
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef BOOST_MOVE_DETAIL_REVERSE_ITERATOR_HPP
+#define BOOST_MOVE_DETAIL_REVERSE_ITERATOR_HPP
+
+#ifndef BOOST_CONFIG_HPP
+# include <boost/config.hpp>
+#endif
+
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+# pragma once
+#endif
+
+#include <boost/move/detail/config_begin.hpp>
+#include <boost/move/detail/iterator_traits.hpp>
+#include <boost/move/detail/meta_utils.hpp>
+
+namespace boost {
+namespace movelib {
+
+template<class It>
+class reverse_iterator
+{
+ public:
+ typedef typename boost::movelib::iterator_traits<It>::pointer pointer;
+ typedef typename boost::movelib::iterator_traits<It>::reference reference;
+ typedef typename boost::movelib::iterator_traits<It>::difference_type difference_type;
+ typedef typename boost::movelib::iterator_traits<It>::iterator_category iterator_category;
+ typedef typename boost::movelib::iterator_traits<It>::value_type value_type;
+
+
+ typedef It iterator_type;
+
+ reverse_iterator()
+ : m_current() //Value initialization to achieve "null iterators" (N3644)
+ {}
+
+ explicit reverse_iterator(It r)
+ : m_current(r)
+ {}
+
+ reverse_iterator(const reverse_iterator& r)
+ : m_current(r.base())
+ {}
+
+ template<class OtherIt>
+ reverse_iterator( const reverse_iterator<OtherIt>& r
+ , typename boost::move_detail::enable_if_convertible<OtherIt, It>::type* =0
+ )
+ : m_current(r.base())
+ {}
+
+ reverse_iterator & operator=( const reverse_iterator& r)
+ { m_current = r.base(); return *this; }
+
+ template<class OtherIt>
+ typename boost::move_detail::enable_if_convertible<OtherIt, It, reverse_iterator &>::type
+ operator=( const reverse_iterator<OtherIt>& r)
+ { m_current = r.base(); return *this; }
+
+ It base() const
+ { return m_current; }
+
+ reference operator*() const
+ {
+ It temp(m_current);
+ --temp;
+ reference r = *temp;
+ return r;
+ }
+
+ pointer operator->() const
+ {
+ It temp(m_current);
+ --temp;
+ return iterator_arrow_result(temp);
+ }
+
+ reference operator[](difference_type off) const
+ {
+ return this->m_current[-off - 1];
+ }
+
+ reverse_iterator& operator++()
+ {
+ --m_current;
+ return *this;
+ }
+
+ reverse_iterator operator++(int)
+ {
+ reverse_iterator temp((*this));
+ --m_current;
+ return temp;
+ }
+
+ reverse_iterator& operator--()
+ {
+ ++m_current;
+ return *this;
+ }
+
+ reverse_iterator operator--(int)
+ {
+ reverse_iterator temp((*this));
+ ++m_current;
+ return temp;
+ }
+
+ friend bool operator==(const reverse_iterator& l, const reverse_iterator& r)
+ { return l.m_current == r.m_current; }
+
+ friend bool operator!=(const reverse_iterator& l, const reverse_iterator& r)
+ { return l.m_current != r.m_current; }
+
+ friend bool operator<(const reverse_iterator& l, const reverse_iterator& r)
+ { return l.m_current > r.m_current; }
+
+ friend bool operator<=(const reverse_iterator& l, const reverse_iterator& r)
+ { return l.m_current >= r.m_current; }
+
+ friend bool operator>(const reverse_iterator& l, const reverse_iterator& r)
+ { return l.m_current < r.m_current; }
+
+ friend bool operator>=(const reverse_iterator& l, const reverse_iterator& r)
+ { return l.m_current <= r.m_current; }
+
+ reverse_iterator& operator+=(difference_type off)
+ { m_current -= off; return *this; }
+
+ reverse_iterator& operator-=(difference_type off)
+ { m_current += off; return *this; }
+
+ friend reverse_iterator operator+(reverse_iterator l, difference_type off)
+ { return (l += off); }
+
+ friend reverse_iterator operator+(difference_type off, reverse_iterator r)
+ { return (r += off); }
+
+ friend reverse_iterator operator-(reverse_iterator l, difference_type off)
+ { return (l-= off); }
+
+ friend difference_type operator-(const reverse_iterator& l, const reverse_iterator& r)
+ { return r.m_current - l.m_current; }
+
+ private:
+ It m_current; // the wrapped iterator
+};
+
+template< class Iterator >
+reverse_iterator<Iterator> make_reverse_iterator( Iterator i )
+{
+ return reverse_iterator<Iterator>(i);
+}
+
+} //namespace movelib {
+} //namespace boost {
+
+#include <boost/move/detail/config_end.hpp>
+
+#endif //BOOST_MOVE_DETAIL_REVERSE_ITERATOR_HPP