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// Boost.Geometry Index
//
// R-tree subtree scoped destroyer
//
// 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_NODE_SUBTREE_DESTROYED_HPP
#define BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_SUBTREE_DESTROYED_HPP
#include <boost/geometry/index/detail/rtree/visitors/destroy.hpp>
namespace boost { namespace geometry { namespace index {
namespace detail { namespace rtree {
template <typename Value, typename Options, typename Translator, typename Box, typename Allocators>
class subtree_destroyer
{
typedef typename rtree::node<Value, typename Options::parameters_type, Box, Allocators, typename Options::node_tag>::type node;
typedef typename Allocators::node_pointer pointer;
subtree_destroyer(subtree_destroyer const&);
subtree_destroyer & operator=(subtree_destroyer const&);
public:
subtree_destroyer(pointer ptr, Allocators & allocators)
: m_ptr(ptr)
, m_allocators(allocators)
{}
~subtree_destroyer()
{
reset();
}
void reset(pointer ptr = 0)
{
if ( m_ptr && m_ptr != 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_SUBTREE_DESTROYED_HPP
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