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_MEMBER_VALUE_TRAITS_HPP
Chris@16: #define BOOST_INTRUSIVE_MEMBER_VALUE_TRAITS_HPP
Chris@16: 
Chris@101: #include <boost/intrusive/detail/config_begin.hpp>
Chris@101: #include <boost/intrusive/intrusive_fwd.hpp>
Chris@101: 
Chris@16: #include <boost/intrusive/link_mode.hpp>
Chris@16: #include <boost/intrusive/detail/parent_from_member.hpp>
Chris@16: #include <boost/intrusive/pointer_traits.hpp>
Chris@16: 
Chris@101: #if defined(BOOST_HAS_PRAGMA_ONCE)
Chris@101: #  pragma once
Chris@101: #endif
Chris@101: 
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: //!store a node_traits::node
Chris@16: template< class T, class NodeTraits
Chris@16:         , typename NodeTraits::node T::* PtrToMember
Chris@101:         , link_mode_type LinkMode
Chris@101:    #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
Chris@101:    = safe_link
Chris@101:    #endif
Chris@101: >
Chris@16: struct member_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 pointer_traits<node_ptr>                                     node_ptr_traits;
Chris@16:    typedef typename pointer_traits<node_ptr>::template
Chris@16:       rebind_pointer<T>::type                                           pointer;
Chris@16:    typedef typename pointer_traits<node_ptr>::template
Chris@16:       rebind_pointer<const T>::type                                     const_pointer;
Chris@16:    //typedef typename pointer_traits<pointer>::reference                  reference;
Chris@16:    //typedef typename pointer_traits<const_pointer>::reference            const_reference;
Chris@16:    typedef value_type &                                                 reference;
Chris@16:    typedef const value_type &                                           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@101:    {  return pointer_traits<node_ptr>::pointer_to(value.*PtrToMember);   }
Chris@16: 
Chris@16:    static const_node_ptr to_node_ptr(const_reference value)
Chris@101:    {  return pointer_traits<const_node_ptr>::pointer_to(value.*PtrToMember);   }
Chris@16: 
Chris@16:    static pointer to_value_ptr(const node_ptr &n)
Chris@16:    {
Chris@101:       return pointer_traits<pointer>::pointer_to(*detail::parent_from_member<value_type, node>
Chris@16:          (boost::intrusive::detail::to_raw_pointer(n), PtrToMember));
Chris@16:    }
Chris@16: 
Chris@16:    static const_pointer to_value_ptr(const const_node_ptr &n)
Chris@16:    {
Chris@101:       return pointer_traits<const_pointer>::pointer_to(*detail::parent_from_member<value_type, node>
Chris@16:          (boost::intrusive::detail::to_raw_pointer(n), PtrToMember));
Chris@101: 
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_MEMBER_VALUE_TRAITS_HPP