#ifndef BOOST_SERIALIZATION_NVP_HPP

#define BOOST_SERIALIZATION_NVP_HPP

// MS compatible compilers support #pragma once

#if defined(_MSC_VER) && (_MSC_VER >= 1020)

# pragma once

#endif

/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8

// nvp.hpp: interface for serialization system.

// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 

// Use, modification and distribution is subject to 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 for updates, documentation, and revision history.

#include <utility>

#include <boost/config.hpp>

#include <boost/detail/workaround.hpp>

// supress noise

#if BOOST_WORKAROUND(BOOST_MSVC, <= 1200)

# pragma warning (disable : 4786) // too long name, harmless warning

#endif

#include <boost/mpl/integral_c.hpp>

#include <boost/mpl/integral_c_tag.hpp>

#include <boost/serialization/level.hpp>

#include <boost/serialization/tracking.hpp>

#include <boost/serialization/split_member.hpp>

#include <boost/serialization/base_object.hpp>

#include <boost/serialization/traits.hpp>

namespace boost {

namespace serialization {

template<class T>

struct nvp : 

    public std::pair<const char *, T *>,

    public traits<nvp<T>, object_serializable, track_never>

{

    explicit nvp(const char * name, T & t) :

        // note: redundant cast works around borland issue

        std::pair<const char *, T *>(name, (T*)(& t))

    {}

    nvp(const nvp & rhs) : 

        // note: redundant cast works around borland issue

        std::pair<const char *, T *>(rhs.first, (T*)rhs.second)

    {}

    const char * name() const {

        return this->first;

    }

    T & value() const {

        return *(this->second);

    }

    const T & const_value() const {

        return *(this->second);

    }

    // True64 compiler complains with a warning about the use of

    // the name "Archive" hiding some higher level usage.  I'm sure this

    // is an error but I want to accomodated as it generates a long warning

    // listing and might be related to a lot of test failures.

    // default treatment for name-value pairs. The name is

    // just discarded and only the value is serialized. 

    template<class Archivex>

    void save(

        Archivex & ar, 

        const unsigned int /* file_version */

    ) const {

        // CodeWarrior 8.x can't seem to resolve the << op for a rhs of "const T *"

        ar.operator<<(const_value());

    }

    template<class Archivex>

    void load(

        Archivex & ar, 

        const unsigned int /* file_version */

    ){

        // CodeWarrior 8.x can't seem to resolve the >> op for a rhs of "const T *"

        ar.operator>>(value());

    }

    BOOST_SERIALIZATION_SPLIT_MEMBER()

};

template<class T>

inline

#ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING

const

#endif

nvp<T> make_nvp(const char * name, T & t){

    return nvp<T>(name, t);

}

// to maintain efficiency and portability, we want to assign

// specific serialization traits to all instances of this wrappers.

// we can't strait forward method below as it depends upon

// Partial Template Specialization and doing so would mean that wrappers

// wouldn't be treated the same on different platforms.  This would

// break archive portability. Leave this here as reminder not to use it !!!

#if 0 // #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION

template <class T>

struct implementation_level<nvp<T> >

{

    typedef mpl::integral_c_tag tag;

    typedef mpl::int_<object_serializable> type;

    BOOST_STATIC_CONSTANT(int, value = implementation_level::type::value);

};

// nvp objects are generally created on the stack and are never tracked

template<class T>

struct tracking_level<nvp<T> >

{

    typedef mpl::integral_c_tag tag;

    typedef mpl::int_<track_never> type;

    BOOST_STATIC_CONSTANT(int, value = tracking_level::type::value);

};

#endif

} // seralization

} // boost

#include <boost/preprocessor/stringize.hpp>

#define BOOST_SERIALIZATION_NVP(name)                              \

    boost::serialization::make_nvp(BOOST_PP_STRINGIZE(name), name)

/**/

#define BOOST_SERIALIZATION_BASE_OBJECT_NVP(name)                  \

    boost::serialization::make_nvp(                                \

        BOOST_PP_STRINGIZE(name),                                  \

        boost::serialization::base_object<name >(*this)            \

    )

/**/

#endif // BOOST_SERIALIZATION_NVP_HPP