Imported Upstream version 1.57.0upstream/1.57.0

1 files changed, 81 insertions, 0 deletions

diff --git a/boost/geometry/index/detail/rtree/node/node_auto_ptr.hpp b/boost/geometry/index/detail/rtree/node/node_auto_ptr.hpp
new file mode 100644
index 0000000000..c19e123b62
--- /dev/null
+++ b/boost/geometry/index/detail/rtree/node/node_auto_ptr.hpp
@@ -0,0 +1,81 @@
+// Boost.Geometry Index
+//
+// R-tree node auto ptr
+//
+// Copyright (c) 2011-2013 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_NODE_NODE_AUTO_PTR_HPP
+#define BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_NODE_AUTO_PTR_HPP
+
+#include <boost/geometry/index/detail/rtree/visitors/destroy.hpp>
+
+namespace boost { namespace geometry { namespace index {
+
+namespace detail { namespace rtree {
+
+// TODO - change the name to node_scoped_ptr
+
+template <typename Value, typename Options, typename Translator, typename Box, typename Allocators>
+class node_auto_ptr
+{
+    typedef typename rtree::node<Value, typename Options::parameters_type, Box, Allocators, typename Options::node_tag>::type node;
+    typedef typename Allocators::node_pointer pointer;
+
+    node_auto_ptr(node_auto_ptr const&);
+    node_auto_ptr & operator=(node_auto_ptr const&);
+
+public:
+    node_auto_ptr(pointer ptr, Allocators & allocators)
+        : m_ptr(ptr)
+        , m_allocators(allocators)
+    {}
+
+    ~node_auto_ptr()
+    {
+        reset();
+    }
+
+    void reset(pointer ptr = 0)
+    {
+        if ( m_ptr )
+        {
+            detail::rtree::visitors::destroy<Value, Options, Translator, Box, Allocators> del_v(m_ptr, m_allocators);
+            detail::rtree::apply_visitor(del_v, *m_ptr);
+        }
+        m_ptr = ptr;
+    }
+
+    void release()
+    {
+        m_ptr = 0;
+    }
+
+    pointer get() const
+    {
+        return m_ptr;
+    }
+
+    node & operator*() const
+    {
+        return *m_ptr;
+    }
+
+    pointer operator->() const
+    {
+        return m_ptr;
+    }
+
+private:
+    pointer m_ptr;
+    Allocators & m_allocators;
+};
+
+}} // namespace detail::rtree
+
+}}} // namespace boost::geometry::index
+
+#endif // BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_NODE_AUTO_PTR_HPP