// Boost.Geometry Index
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//
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// R-tree subtree scoped destroyer
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//
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// Copyright (c) 2011-2015 Adam Wulkiewicz, Lodz, Poland.
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//
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// This file was modified by Oracle on 2019.
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// Modifications copyright (c) 2019 Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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//
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_SUBTREE_DESTROYED_HPP
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#define BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_SUBTREE_DESTROYED_HPP
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#include <boost/geometry/index/detail/rtree/visitors/destroy.hpp>
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namespace boost { namespace geometry { namespace index {
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namespace detail { namespace rtree {
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template <typename MembersHolder>
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class subtree_destroyer
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{
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typedef typename MembersHolder::node node;
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typedef typename MembersHolder::allocators_type allocators_type;
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typedef typename MembersHolder::node_pointer pointer;
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subtree_destroyer(subtree_destroyer const&);
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subtree_destroyer & operator=(subtree_destroyer const&);
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public:
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subtree_destroyer(pointer ptr, allocators_type & allocators)
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: m_ptr(ptr)
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, m_allocators(allocators)
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{}
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~subtree_destroyer()
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{
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reset();
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}
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void reset(pointer ptr = 0)
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{
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if ( m_ptr && m_ptr != ptr )
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{
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detail::rtree::visitors::destroy<MembersHolder>::apply(m_ptr, m_allocators);
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}
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m_ptr = ptr;
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}
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void release()
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{
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m_ptr = 0;
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}
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pointer get() const
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{
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return m_ptr;
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}
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node & operator*() const
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{
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return *m_ptr;
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}
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pointer operator->() const
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{
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return m_ptr;
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}
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private:
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pointer m_ptr;
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allocators_type & m_allocators;
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};
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}} // namespace detail::rtree
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}}} // namespace boost::geometry::index
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#endif // BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_SUBTREE_DESTROYED_HPP
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