ceph/src/boost/boost/serialization/array_wrapper.hpp

   1 #ifndef BOOST_SERIALIZATION_ARRAY_WRAPPER_HPP
   2 #define BOOST_SERIALIZATION_ARRAY_WRAPPER_HPP
   3
   4 // (C) Copyright 2005 Matthias Troyer and Dave Abrahams
   5 // Use, modification and distribution is subject to the Boost Software
   6 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8
   9 //#include <iostream>
  10
  11 #include <boost/config.hpp> // msvc 6.0 needs this for warning suppression
  12
  13 #if defined(BOOST_NO_STDC_NAMESPACE)
  14 namespace std{
  15     using ::size_t;
  16 } // namespace std
  17 #endif
  18
  19 #include <boost/serialization/nvp.hpp>
  20 #include <boost/serialization/split_member.hpp>
  21 #include <boost/serialization/wrapper.hpp>
  22 #include <boost/serialization/collection_size_type.hpp>
  23 #include <boost/serialization/array_optimization.hpp>
  24 #include <boost/mpl/always.hpp>
  25 #include <boost/mpl/apply.hpp>
  26 #include <boost/mpl/bool_fwd.hpp>
  27 #include <boost/type_traits/remove_const.hpp>
  28
  29 namespace boost { namespace serialization {
  30
  31 template<class T>
  32 class array_wrapper :
  33     public wrapper_traits<const array_wrapper< T > >
  34 {
  35 private:
  36     array_wrapper & operator=(const array_wrapper & rhs);
  37     // note: I would like to make the copy constructor private but this breaks
  38     // make_array.  So I make make_array a friend
  39     template<class Tx, class S>
  40     friend const boost::serialization::array_wrapper<Tx> make_array(Tx * t, S s);
  41 public:
  42
  43     array_wrapper(const array_wrapper & rhs) :
  44         m_t(rhs.m_t),
  45         m_element_count(rhs.m_element_count)
  46     {}
  47 public:
  48     array_wrapper(T * t, std::size_t s) :
  49         m_t(t),
  50         m_element_count(s)
  51     {}
  52
  53     // default implementation
  54     template<class Archive>
  55     void serialize_optimized(Archive &ar, const unsigned int, mpl::false_ ) const
  56     {
  57       // default implemention does the loop
  58       std::size_t c = count();
  59       T * t = address();
  60       while(0 < c--)
  61             ar & boost::serialization::make_nvp("item", *t++);
  62     }
  63
  64     // optimized implementation
  65     template<class Archive>
  66     void serialize_optimized(Archive &ar, const unsigned int version, mpl::true_ )
  67     {
  68       boost::serialization::split_member(ar, *this, version);
  69     }
  70
  71     // default implementation
  72     template<class Archive>
  73     void save(Archive &ar, const unsigned int version) const
  74     {
  75       ar.save_array(*this,version);
  76     }
  77
  78     // default implementation
  79     template<class Archive>
  80     void load(Archive &ar, const unsigned int version)
  81     {
  82       ar.load_array(*this,version);
  83     }
  84
  85     // default implementation
  86     template<class Archive>
  87     void serialize(Archive &ar, const unsigned int version)
  88     {
  89       typedef typename
  90           boost::serialization::use_array_optimization<Archive>::template apply<
  91                     typename remove_const< T >::type
  92                 >::type use_optimized;
  93       serialize_optimized(ar,version,use_optimized());
  94     }
  95
  96     T * address() const
  97     {
  98       return m_t;
  99     }
 100
 101     std::size_t count() const
 102     {
 103       return m_element_count;
 104     }
 105
 106 private:
 107     T * const m_t;
 108     const std::size_t m_element_count;
 109 };
 110
 111 template<class T, class S>
 112 inline
 113 const array_wrapper< T > make_array(T* t, S s){
 114     const array_wrapper< T > a(t, s);
 115     return a;
 116 }
 117
 118 } } // end namespace boost::serialization
 119
 120
 121 #endif //BOOST_SERIALIZATION_ARRAY_WRAPPER_HPP