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+// Boost.Geometry Index
+//
+// R-tree iterators
+//
+// Copyright (c) 2011-2015 Adam Wulkiewicz, Lodz, Poland.
+//
+// Use, modification and distribution is subject to 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)
+
+#ifndef BOOST_GEOMETRY_INDEX_DETAIL_RTREE_ITERATORS_HPP
+#define BOOST_GEOMETRY_INDEX_DETAIL_RTREE_ITERATORS_HPP
+
+namespace boost { namespace geometry { namespace index { namespace detail { namespace rtree { namespace iterators {
+
+template <typename Value, typename Allocators>
+struct end_iterator
+{
+ typedef std::forward_iterator_tag iterator_category;
+ typedef Value value_type;
+ typedef typename Allocators::const_reference reference;
+ typedef typename Allocators::difference_type difference_type;
+ typedef typename Allocators::const_pointer pointer;
+
+ reference operator*() const
+ {
+ BOOST_GEOMETRY_INDEX_ASSERT(false, "iterator not dereferencable");
+ pointer p(0);
+ return *p;
+ }
+
+ const value_type * operator->() const
+ {
+ BOOST_GEOMETRY_INDEX_ASSERT(false, "iterator not dereferencable");
+ const value_type * p = 0;
+ return p;
+ }
+
+ end_iterator & operator++()
+ {
+ BOOST_GEOMETRY_INDEX_ASSERT(false, "iterator not incrementable");
+ return *this;
+ }
+
+ end_iterator operator++(int)
+ {
+ BOOST_GEOMETRY_INDEX_ASSERT(false, "iterator not incrementable");
+ return *this;
+ }
+
+ friend bool operator==(end_iterator const& /*l*/, end_iterator const& /*r*/)
+ {
+ return true;
+ }
+};
+
+template <typename Value, typename Options, typename Translator, typename Box, typename Allocators>
+class iterator
+{
+ typedef visitors::iterator<Value, Options, Translator, Box, Allocators> visitor_type;
+ typedef typename visitor_type::node_pointer node_pointer;
+
+public:
+ typedef std::forward_iterator_tag iterator_category;
+ typedef Value value_type;
+ typedef typename Allocators::const_reference reference;
+ typedef typename Allocators::difference_type difference_type;
+ typedef typename Allocators::const_pointer pointer;
+
+ inline iterator()
+ {}
+
+ inline iterator(node_pointer root)
+ {
+ m_visitor.initialize(root);
+ }
+
+ reference operator*() const
+ {
+ return m_visitor.dereference();
+ }
+
+ const value_type * operator->() const
+ {
+ return boost::addressof(m_visitor.dereference());
+ }
+
+ iterator & operator++()
+ {
+ m_visitor.increment();
+ return *this;
+ }
+
+ iterator operator++(int)
+ {
+ iterator temp = *this;
+ this->operator++();
+ return temp;
+ }
+
+ friend bool operator==(iterator const& l, iterator const& r)
+ {
+ return l.m_visitor == r.m_visitor;
+ }
+
+ friend bool operator==(iterator const& l, end_iterator<Value, Allocators> const& /*r*/)
+ {
+ return l.m_visitor.is_end();
+ }
+
+ friend bool operator==(end_iterator<Value, Allocators> const& /*l*/, iterator const& r)
+ {
+ return r.m_visitor.is_end();
+ }
+
+private:
+ visitor_type m_visitor;
+};
+
+}}}}}} // namespace boost::geometry::index::detail::rtree::iterators
+
+#endif // BOOST_GEOMETRY_INDEX_DETAIL_RTREE_ITERATORS_HPP