Chris@16: /////////////////////////////////////////////////////////////////////////////
Chris@16: //
Chris@16: // (C) Copyright Ion Gaztanaga  2006-2013
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0.
Chris@16: //    (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: //          http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // See http://www.boost.org/libs/intrusive for documentation.
Chris@16: //
Chris@16: /////////////////////////////////////////////////////////////////////////////
Chris@16: 
Chris@16: #ifndef BOOST_INTRUSIVE_DERIVATION_VALUE_TRAITS_HPP
Chris@16: #define BOOST_INTRUSIVE_DERIVATION_VALUE_TRAITS_HPP
Chris@16: 
Chris@101: #include <boost/intrusive/detail/config_begin.hpp>
Chris@101: #include <boost/intrusive/intrusive_fwd.hpp>
Chris@16: #include <boost/intrusive/link_mode.hpp>
Chris@101: #include <boost/intrusive/pointer_traits.hpp>
Chris@101: 
Chris@101: #if defined(BOOST_HAS_PRAGMA_ONCE)
Chris@101: #  pragma once
Chris@101: #endif
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace intrusive {
Chris@16: 
Chris@16: //!This value traits template is used to create value traits
Chris@16: //!from user defined node traits where value_traits::value_type will
Chris@16: //!derive from node_traits::node
Chris@101: 
Chris@101: template<class T, class NodeTraits, link_mode_type LinkMode
Chris@101:    #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
Chris@101:    = safe_link
Chris@101:    #endif
Chris@101: >
Chris@16: struct derivation_value_traits
Chris@16: {
Chris@16:    public:
Chris@16:    typedef NodeTraits                                                node_traits;
Chris@16:    typedef T                                                         value_type;
Chris@16:    typedef typename node_traits::node                                node;
Chris@16:    typedef typename node_traits::node_ptr                            node_ptr;
Chris@16:    typedef typename node_traits::const_node_ptr                      const_node_ptr;
Chris@101:    typedef typename pointer_traits<node_ptr>::
Chris@101:       template rebind_pointer<value_type>::type                      pointer;
Chris@101:    typedef typename pointer_traits<node_ptr>::
Chris@101:       template rebind_pointer<const value_type>::type                const_pointer;
Chris@16:    typedef typename boost::intrusive::
Chris@16:       pointer_traits<pointer>::reference                             reference;
Chris@16:    typedef typename boost::intrusive::
Chris@16:       pointer_traits<const_pointer>::reference                       const_reference;
Chris@16:    static const link_mode_type link_mode = LinkMode;
Chris@16: 
Chris@16:    static node_ptr to_node_ptr(reference value)
Chris@16:    { return node_ptr(&value); }
Chris@16: 
Chris@16:    static const_node_ptr to_node_ptr(const_reference value)
Chris@16:    { return node_ptr(&value); }
Chris@16: 
Chris@16:    static pointer to_value_ptr(const node_ptr &n)
Chris@16:    {
Chris@101:       return pointer_traits<pointer>::pointer_to(static_cast<reference>(*n));
Chris@16:    }
Chris@16: 
Chris@16:    static const_pointer to_value_ptr(const const_node_ptr &n)
Chris@16:    {
Chris@101:       return pointer_traits<pointer>::pointer_to(static_cast<const_reference>(*n));
Chris@16:    }
Chris@16: };
Chris@16: 
Chris@16: } //namespace intrusive
Chris@16: } //namespace boost
Chris@16: 
Chris@101: #include <boost/intrusive/detail/config_end.hpp>
Chris@101: 
Chris@16: #endif //BOOST_INTRUSIVE_DERIVATION_VALUE_TRAITS_HPP