greg_serialize.hpp

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#ifndef GREGORIAN_SERIALIZE_HPP___
#define GREGORIAN_SERIALIZE_HPP___

/* Copyright (c) 2004-2005 CrystalClear Software, Inc.
 * Use, modification and distribution is subject to the 
 * Boost Software License, Version 1.0. (See accompanying
 * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
 * Author: Jeff Garland, Bart Garst
 * $Date: 2008-02-27 15:00:24 -0500 (Wed, 27 Feb 2008) $
 */

#include "boost/date_time/gregorian/gregorian_types.hpp"
#include "boost/date_time/gregorian/parsers.hpp"
#include "boost/serialization/split_free.hpp"

  
// macros to split serialize functions into save & load functions
// An expanded version is below for gregorian::date
// NOTE: these macros define template functions in the boost::serialization namespace.
// They must be expanded *outside* of any namespace
BOOST_SERIALIZATION_SPLIT_FREE(::boost::gregorian::date_duration)
BOOST_SERIALIZATION_SPLIT_FREE(::boost::gregorian::date_duration::duration_rep)
BOOST_SERIALIZATION_SPLIT_FREE(::boost::gregorian::date_period)
BOOST_SERIALIZATION_SPLIT_FREE(::boost::gregorian::greg_month)
BOOST_SERIALIZATION_SPLIT_FREE(::boost::gregorian::greg_day)
BOOST_SERIALIZATION_SPLIT_FREE(::boost::gregorian::greg_weekday)
BOOST_SERIALIZATION_SPLIT_FREE(::boost::gregorian::partial_date)
BOOST_SERIALIZATION_SPLIT_FREE(::boost::gregorian::nth_kday_of_month)
BOOST_SERIALIZATION_SPLIT_FREE(::boost::gregorian::first_kday_of_month)
BOOST_SERIALIZATION_SPLIT_FREE(::boost::gregorian::last_kday_of_month)
BOOST_SERIALIZATION_SPLIT_FREE(::boost::gregorian::first_kday_before)
BOOST_SERIALIZATION_SPLIT_FREE(::boost::gregorian::first_kday_after)

namespace boost {
namespace serialization {

/*! Method that does serialization for gregorian::date -- splits to load/save
 */
template<class Archive>                         
inline void serialize(Archive & ar,                               
                      ::boost::gregorian::date & d,
                      const unsigned int file_version)
{
  split_free(ar, d, file_version);              
}                                               

//! Function to save gregorian::date objects using serialization lib
/*! Dates are serialized into a string for transport and storage. 
 *  While it would be more efficient to store the internal
 *  integer used to manipulate the dates, it is an unstable solution.  
 */
template<class Archive>
void save(Archive & ar, 
          const ::boost::gregorian::date & d, 
          unsigned int /* version */)
{
  std::string ds = to_iso_string(d);
  ar & make_nvp("date", ds);
}

//! Function to load gregorian::date objects using serialization lib
/*! Dates are serialized into a string for transport and storage. 
 *  While it would be more efficient to store the internal
 *  integer used to manipulate the dates, it is an unstable solution.  
 */
template<class Archive>
void load(Archive & ar, 
          ::boost::gregorian::date & d, 
          unsigned int /*version*/)
{
  std::string ds;
  ar & make_nvp("date", ds);
  try{
    d = ::boost::gregorian::from_undelimited_string(ds);
  }catch(bad_lexical_cast be) {
    gregorian::special_values sv = gregorian::special_value_from_string(ds);
    if(sv == gregorian::not_special) {
      throw(be); // no match found, rethrow original exception
    }
    else {
      d = gregorian::date(sv);
    }
  }
}


//!override needed b/c no default constructor
template<class Archive>
inline void load_construct_data(Archive & ar, 
                                ::boost::gregorian::date* dp, 
                                const unsigned int /*file_version*/)
{
  // retrieve data from archive required to construct new 
  // invoke inplace constructor to initialize instance of date
  ::new(dp) ::boost::gregorian::date(::boost::gregorian::not_a_date_time);
}

/**** date_duration ****/

//! Function to save gregorian::date_duration objects using serialization lib
template<class Archive>
void save(Archive & ar, const gregorian::date_duration & dd, 
          unsigned int /*version*/)
{
  typename gregorian::date_duration::duration_rep dr = dd.get_rep();
  ar & make_nvp("date_duration", dr);
}
//! Function to load gregorian::date_duration objects using serialization lib
template<class Archive>
void load(Archive & ar, gregorian::date_duration & dd, unsigned int /*version*/)
{
  typename gregorian::date_duration::duration_rep dr(0);
  ar & make_nvp("date_duration", dr);
  dd = gregorian::date_duration(dr);
}
//!override needed b/c no default constructor
template<class Archive>
inline void load_construct_data(Archive & ar, gregorian::date_duration* dd, 
                                const unsigned int /*file_version*/)
{
  ::new(dd) gregorian::date_duration(gregorian::not_a_date_time);
}

/**** date_duration::duration_rep (most likely int_adapter) ****/

//! helper unction to save date_duration objects using serialization lib
template<class Archive>
void save(Archive & ar, const gregorian::date_duration::duration_rep & dr, 
          unsigned int /*version*/)
{
  typename gregorian::date_duration::duration_rep::int_type it = dr.as_number();
  ar & make_nvp("date_duration_duration_rep", it);
}
//! helper function to load date_duration objects using serialization lib
template<class Archive>
void load(Archive & ar, gregorian::date_duration::duration_rep & dr, unsigned int /*version*/)
{
  typename gregorian::date_duration::duration_rep::int_type it(0);
  ar & make_nvp("date_duration_duration_rep", it);
  dr = gregorian::date_duration::duration_rep::int_type(it);
}
//!override needed b/c no default constructor
template<class Archive>
inline void load_construct_data(Archive & ar, gregorian::date_duration::duration_rep* dr, 
                                const unsigned int /*file_version*/)
{
  ::new(dr) gregorian::date_duration::duration_rep(0);
}

/**** date_period ****/

//! Function to save gregorian::date_period objects using serialization lib
/*! date_period objects are broken down into 2 parts for serialization:
 * the begining date object and the end date object
 */
template<class Archive>
void save(Archive & ar, const gregorian::date_period& dp, 
          unsigned int /*version*/)
{
  gregorian::date d1 = dp.begin();
  gregorian::date d2 = dp.end();
  ar & make_nvp("date_period_begin_date", d1);
  ar & make_nvp("date_period_end_date", d2);
}
//! Function to load gregorian::date_period objects using serialization lib
/*! date_period objects are broken down into 2 parts for serialization:
 * the begining date object and the end date object
 */
template<class Archive>
void load(Archive & ar, gregorian::date_period& dp, unsigned int /*version*/)
{
  gregorian::date d1(gregorian::not_a_date_time);
  gregorian::date d2(gregorian::not_a_date_time);
  ar & make_nvp("date_period_begin_date", d1);
  ar & make_nvp("date_period_end_date", d2);
  dp = gregorian::date_period(d1,d2);
}
//!override needed b/c no default constructor
template<class Archive>
inline void load_construct_data(Archive & ar, gregorian::date_period* dp, 
                                const unsigned int /*file_version*/)
{
  gregorian::date d(gregorian::not_a_date_time);
  gregorian::date_duration dd(1);
  ::new(dp) gregorian::date_period(d,dd);
}

/**** greg_month ****/

//! Function to save gregorian::greg_month objects using serialization lib
template<class Archive>
void save(Archive & ar, const gregorian::greg_month& gm, 
          unsigned int /*version*/)
{
  unsigned short us = gm.as_number();
  ar & make_nvp("greg_month", us);
}
//! Function to load gregorian::greg_month objects using serialization lib
template<class Archive>
void load(Archive & ar, gregorian::greg_month& gm, unsigned int /*version*/)
{
  unsigned short us;
  ar & make_nvp("greg_month", us);
  gm = gregorian::greg_month(us);
}
//!override needed b/c no default constructor
template<class Archive>
inline void load_construct_data(Archive & ar, gregorian::greg_month* gm, 
                                const unsigned int /*file_version*/)
{
  ::new(gm) gregorian::greg_month(1);
}

/**** greg_day ****/

//! Function to save gregorian::greg_day objects using serialization lib
template<class Archive>
void save(Archive & ar, const gregorian::greg_day& gd, 
          unsigned int /*version*/)
{
  unsigned short us = gd.as_number();
  ar & make_nvp("greg_day", us);
}
//! Function to load gregorian::greg_day objects using serialization lib
template<class Archive>
void load(Archive & ar, gregorian::greg_day& gd, unsigned int /*version*/)
{
  unsigned short us;
  ar & make_nvp("greg_day", us);
  gd = gregorian::greg_day(us);
}
//!override needed b/c no default constructor
template<class Archive>
inline void load_construct_data(Archive & ar, gregorian::greg_day* gd, 
                                const unsigned int /*file_version*/)
{
  ::new(gd) gregorian::greg_day(1);
}

/**** greg_weekday ****/

//! Function to save gregorian::greg_weekday objects using serialization lib
template<class Archive>
void save(Archive & ar, const gregorian::greg_weekday& gd, 
          unsigned int /*version*/)