// Copyright David Abrahams 2006. 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)

#include <boost/preprocessor/cat.hpp>

// ---- export.hpp ----

namespace boost { namespace serialization
{
  struct tag {};
  
  template <class Serializable>
  int instantiate_serialize(int)
  {
      return 0;
  }

  template <class Archive, class Serializable>
  struct instantiator
  {
      // #define PROVE_THIS_GETS_INSTANTIATED to show that this class
      // #gets instantiated for each archive.
#    ifdef PROVE_THIS_GETS_INSTANTIATED
      typedef typename Serializable::nonexistent err;
#    endif 
      
      typedef int instantiate;
  };

#define BOOST_SERIALIZATION_CLASS_EXPORT(C)                     \
  namespace                                                     \
  {                                                             \
    int BOOST_PP_CAT(boost_serialization_instantiate_,__LINE__) \
        = boost::serialization::instantiate_serialize<C>(0);    \
  }

#define BOOST_SERIALIZATION_DECLARE_ARCHIVE(A)          \
  namespace boost { namespace serialization             \
  {                                                     \
    template <class Serializable>                       \
    typename instantiator<A,Serializable>::instantiate  \
    instantiate_serialize(...);                         \
  }}

  
}}

// ------- some_archive.hpp ---

namespace arch1
{
  struct myarchive1;
}

BOOST_SERIALIZATION_DECLARE_ARCHIVE(arch1::myarchive1)


// ------- some_archive2.hpp ---

namespace arch2
{
  struct myarchive2;
}

BOOST_SERIALIZATION_DECLARE_ARCHIVE(arch2::myarchive2)

// ------- some_serializable_type.cpp ----

namespace user
{
  struct my_serializable;

  BOOST_SERIALIZATION_CLASS_EXPORT(my_serializable)
}