boost/serialization/utility.hpp

   1 #ifndef  BOOST_SERIALIZATION_UTILITY_HPP
   2 #define BOOST_SERIALIZATION_UTILITY_HPP
   3
   4 // MS compatible compilers support #pragma once
   5 #if defined(_MSC_VER) && (_MSC_VER >= 1020)
   6 # pragma once
   7 #endif
   8
   9 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
  10 // serialization/utility.hpp:
  11 // serialization for stl utility templates
  12
  13 // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
  14 // Use, modification and distribution is subject to the Boost Software
  15 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  16 // http://www.boost.org/LICENSE_1_0.txt)
  17
  18 //  See http://www.boost.org for updates, documentation, and revision history.
  19
  20 #include <utility>
  21 #include <boost/config.hpp>
  22
  23 #include <boost/type_traits/remove_const.hpp>
  24 #include <boost/serialization/nvp.hpp>
  25 #include <boost/serialization/is_bitwise_serializable.hpp>
  26 #include <boost/mpl/and.hpp>
  27
  28 namespace boost {
  29 namespace serialization {
  30
  31 // pair
  32 template<class Archive, class F, class S>
  33 inline void serialize(
  34     Archive & ar,
  35     std::pair<F, S> & p,
  36     const unsigned int /* file_version */
  37 ){
  38     // note: we remove any const-ness on the first argument.  The reason is that
  39     // for stl maps, the type saved is pair<const key, T).  We remove
  40     // the const-ness in order to be able to load it.
  41     typedef BOOST_DEDUCED_TYPENAME boost::remove_const<F>::type typef;
  42     ar & boost::serialization::make_nvp("first", const_cast<typef &>(p.first));
  43     ar & boost::serialization::make_nvp("second", p.second);
  44 }
  45
  46 /// specialization of is_bitwise_serializable for pairs
  47 template <class T, class U>
  48 struct is_bitwise_serializable<std::pair<T,U> >
  49  : public mpl::and_<is_bitwise_serializable<T>,is_bitwise_serializable<U> >
  50 {
  51 };
  52
  53 } // serialization
  54 } // namespace boost
  55
  56 #endif // BOOST_SERIALIZATION_UTILITY_HPP