Ticket #2912: bitset.hpp

/*!
 * \file      bitset.hpp
 * \brief     Provides Boost.Serialization support for std::bitset
 * \author    Brian Ravnsgaard Riis
 * \author    Kenneth Riddile
 * \date      16.09.2004, updated 04.03.2009
 * \copyright 2004 Brian Ravnsgaard Riis
 * \license   Boost Software License 1.0
 */
#ifndef BOOST_SERIALIZATION_BITSET_HPP
#define BOOST_SERIALIZATION_BITSET_HPP

#include <bitset>
#include <string>

#include <boost/config.hpp>
#include <boost/serialization/split_free.hpp>
#include <boost/serialization/string.hpp>
#include <boost/serialization/nvp.hpp>

#if defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION)
#define STD _STLP_STD
#else
#define STD std
#endif

#ifdef BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP
namespace boost {
  namespace serialization {
#else
namespace STD {
#endif

    template <class Archive, unsigned size>
    inline void save(Archive & ar,
        STD::bitset<size> const & t,
        const unsigned int version)
    {
      std::string bits = t.to_string();
      ar << BOOST_SERIALIZATION_NVP( bits );
    }

    template <class Archive, unsigned size>
    inline void load(Archive & ar,
        STD::bitset<size> & t,
        const unsigned int version)
    {
      std::string bits;
      ar >> BOOST_SERIALIZATION_NVP( bits );

      t._Construct( bits, 0, size, '0' );
    }

    template <class Archive, unsigned size>
    inline void serialize(Archive & ar,
        STD::bitset<size> & t,
        const unsigned int version)
    {
      boost::serialization::split_free( ar, t, version );
    }

#ifndef BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP
} // namespace STD 
#else
  } // namespace serialization
} // namespace boost
#endif

#endif // BOOST_SERIALIZATION_BITSET_HPP