[boost] [serialization] Adding serialization code for std::tr1::unordered_map and std::tr1::unordered_multimap

5 Dec 2007

      As this is pretty straightforward, would you mind adding the 
serialization code for this two classes to your library?
I just adapted it from map/multimap and it works without any problems on 
gcc-4.2 for Linux on x86 and PowerPC

#include <tr1/unordered_map>

#include <boost/config.hpp>

#include <boost/serialization/utility.hpp>
#include <boost/serialization/collections_save_imp.hpp>
#include <boost/serialization/collections_load_imp.hpp>
#include <boost/serialization/split_free.hpp>

namespace boost {
namespace serialization {

template<class Archive, class Type, class Key, class Hash, class 
Compare, class Allocator >
inline void save(
   Archive & ar,
   const std::tr1::unordered_map<Key, Type, Hash, Compare, Allocator> &t,
   const unsigned int /* file_version */
){
   boost::serialization::stl::save_collection<
       Archive,
       std::tr1::unordered_map<Key, Type, Hash, Compare, Allocator>
...
(ar, t);
}
template<class Archive, class Type, class Key, class Hash, class 
Compare, class Allocator >
inline void load(
   Archive & ar,
   std::tr1::unordered_map<Key, Type, Hash, Compare, Allocator> &t,
   const unsigned int /* file_version */
){
   boost::serialization::stl::load_collection<
       Archive,
       std::tr1::unordered_map<Key, Type, Hash, Compare, Allocator>,
       boost::serialization::stl::archive_input_unique<
           Archive, std::tr1::unordered_map<Key, Type, Hash, Compare, 
Allocator> >,

boost::serialization::stl::no_reserve_imp<std::tr1::unordered_map<
               Key, Type, Hash, Compare, Allocator
           >
       >
...
(ar, t);
}
// split non-intrusive serialization function member into separate
// non intrusive save/load member functions
template<class Archive, class Type, class Key, class Hash, class 
Compare, class Allocator >
inline void serialize(
   Archive & ar,
   std::tr1::unordered_map<Key, Type, Hash, Compare, Allocator> &t,
   const unsigned int file_version
){
   boost::serialization::split_free(ar, t, file_version);
}

// unordered_multimap
template<class Archive, class Type, class Key, class Hash, class 
Compare, class Allocator >
inline void save(
   Archive & ar,
   const std::tr1::unordered_multimap<Key, Type, Hash, Compare, 
Allocator> &t,
   const unsigned int /* file_version */
){
   boost::serialization::stl::save_collection<
       Archive,
       std::tr1::unordered_multimap<Key, Type, Hash, Compare, Allocator>
...
(ar, t);
}
template<class Archive, class Type, class Key, class Hash, class 
Compare, class Allocator >
inline void load(
   Archive & ar,
   std::tr1::unordered_multimap<Key, Type, Hash, Compare, Allocator> &t,
   const unsigned int /* file_version */
){
   boost::serialization::stl::load_collection<
       Archive,
       std::tr1::unordered_multimap<Key, Type, Hash, Compare, Allocator>,
       boost::serialization::stl::archive_input_multi<
           Archive, std::tr1::unordered_multimap<Key, Type, Hash, 
Compare, Allocator>
       >,
       boost::serialization::stl::no_reserve_imp<
           std::tr1::unordered_multimap<Key, Type, Hash, Compare, 
Allocator>
       >
...
(ar, t);
}
// split non-intrusive serialization function member into separate
// non intrusive save/load member functions
template<class Archive, class Type, class Key, class Hash, class 
Compare, class Allocator >
inline void serialize(
   Archive & ar,
   std::tr1::unordered_multimap<Key, Type, Hash, Compare, Allocator> &t,
   const unsigned int file_version
){
   boost::serialization::split_free(ar, t, file_version);
}

} // serialization
} // namespace boost

Thanks in advance,

René Bürgel

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