Chris@102: /////////////////////////////////////////////////////////////////////////////
Chris@102: //
Chris@102: // (C) Copyright Ion Gaztanaga  2014-2014
Chris@102: //
Chris@102: // Distributed under the Boost Software License, Version 1.0.
Chris@102: //    (See accompanying file LICENSE_1_0.txt or copy at
Chris@102: //          http://www.boost.org/LICENSE_1_0.txt)
Chris@102: //
Chris@102: // See http://www.boost.org/libs/intrusive for documentation.
Chris@102: //
Chris@102: /////////////////////////////////////////////////////////////////////////////
Chris@102: 
Chris@102: #ifndef BOOST_INTRUSIVE_DETAIL_EMPTY_NODE_CHECKER_HPP
Chris@102: #define BOOST_INTRUSIVE_DETAIL_EMPTY_NODE_CHECKER_HPP
Chris@102: 
Chris@102: #ifndef BOOST_CONFIG_HPP
Chris@102: #  include <boost/config.hpp>
Chris@102: #endif
Chris@102: 
Chris@102: #if defined(BOOST_HAS_PRAGMA_ONCE)
Chris@102: #  pragma once
Chris@102: #endif
Chris@102: 
Chris@102: namespace boost {
Chris@102: namespace intrusive {
Chris@102: namespace detail {
Chris@102: 
Chris@102: template<class ValueTraits>
Chris@102: struct empty_node_checker
Chris@102: {
Chris@102:    typedef ValueTraits                             value_traits;
Chris@102:    typedef typename value_traits::node_traits      node_traits;
Chris@102:    typedef typename node_traits::const_node_ptr    const_node_ptr;
Chris@102: 
Chris@102:    struct return_type {};
Chris@102: 
Chris@102:    void operator () (const const_node_ptr&, const return_type&, const return_type&, return_type&) {}
Chris@102: };
Chris@102: 
Chris@102: }  //namespace detail{
Chris@102: }  //namespace intrusive{
Chris@102: }  //namespace boost{
Chris@102: 
Chris@102: #endif //BOOST_INTRUSIVE_DETAIL_EMPTY_NODE_CHECKER_HPP