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/////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2006-2013
//
// Distributed under 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)
//
// See http://www.boost.org/libs/intrusive for documentation.
//
/////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_INTRUSIVE_MEMBER_VALUE_TRAITS_HPP
#define BOOST_INTRUSIVE_MEMBER_VALUE_TRAITS_HPP
#include <boost/intrusive/detail/config_begin.hpp>
#include <boost/intrusive/intrusive_fwd.hpp>
#include <boost/intrusive/link_mode.hpp>
#include <boost/intrusive/detail/parent_from_member.hpp>
#include <boost/move/detail/to_raw_pointer.hpp>
#include <boost/intrusive/pointer_traits.hpp>
#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#endif
namespace boost {
namespace intrusive {
//!This value traits template is used to create value traits
//!from user defined node traits where value_traits::value_type will
//!store a node_traits::node
template< class T, class NodeTraits
, typename NodeTraits::node T::* PtrToMember
, link_mode_type LinkMode
#ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
= safe_link
#endif
>
struct member_value_traits
{
public:
typedef NodeTraits node_traits;
typedef T value_type;
typedef typename node_traits::node node;
typedef typename node_traits::node_ptr node_ptr;
typedef typename node_traits::const_node_ptr const_node_ptr;
typedef pointer_traits<node_ptr> node_ptr_traits;
typedef typename pointer_traits<node_ptr>::template
rebind_pointer<T>::type pointer;
typedef typename pointer_traits<node_ptr>::template
rebind_pointer<const T>::type const_pointer;
//typedef typename pointer_traits<pointer>::reference reference;
//typedef typename pointer_traits<const_pointer>::reference const_reference;
typedef value_type & reference;
typedef const value_type & const_reference;
static const link_mode_type link_mode = LinkMode;
BOOST_INTRUSIVE_FORCEINLINE static node_ptr to_node_ptr(reference value)
{ return pointer_traits<node_ptr>::pointer_to(value.*PtrToMember); }
BOOST_INTRUSIVE_FORCEINLINE static const_node_ptr to_node_ptr(const_reference value)
{ return pointer_traits<const_node_ptr>::pointer_to(value.*PtrToMember); }
BOOST_INTRUSIVE_FORCEINLINE static pointer to_value_ptr(const node_ptr &n)
{
return pointer_traits<pointer>::pointer_to(*detail::parent_from_member<value_type, node>
(boost::movelib::to_raw_pointer(n), PtrToMember));
}
BOOST_INTRUSIVE_FORCEINLINE static const_pointer to_value_ptr(const const_node_ptr &n)
{
return pointer_traits<const_pointer>::pointer_to(*detail::parent_from_member<value_type, node>
(boost::movelib::to_raw_pointer(n), PtrToMember));
}
};
} //namespace intrusive
} //namespace boost
#include <boost/intrusive/detail/config_end.hpp>
#endif //BOOST_INTRUSIVE_MEMBER_VALUE_TRAITS_HPP
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