summaryrefslogtreecommitdiff
path: root/boost/serialization/array.hpp
blob: 97ac0c2501076d61104376398cb462c3a45ae6e9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
#ifndef BOOST_SERIALIZATION_ARRAY_HPP
#define BOOST_SERIALIZATION_ARRAY_HPP

// (C) Copyright 2005 Matthias Troyer and Dave Abrahams
// Use, modification and distribution is subject to 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/config.hpp> // msvc 6.0 needs this for warning suppression

#include <iostream>
#include <cstddef> // std::size_t
#ifndef BOOST_NO_CXX11_HDR_ARRAY
#include <array>
#endif

#if defined(BOOST_NO_STDC_NAMESPACE)
namespace std{ 
    using ::size_t; 
} // namespace std
#endif

#include <boost/serialization/nvp.hpp>
#include <boost/serialization/split_member.hpp>
#include <boost/serialization/wrapper.hpp>
#include <boost/mpl/always.hpp>
#include <boost/mpl/apply.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/type_traits/remove_const.hpp>
#include <boost/array.hpp>

namespace boost { namespace serialization {

// traits to specify whether to use  an optimized array serialization

template <class Archive>
struct use_array_optimization : boost::mpl::always<boost::mpl::false_> {};

template<class T>
class array :
    public wrapper_traits<const array< T > >
{
public:    
    typedef T value_type;
    
    array(value_type* t, std::size_t s) :
        m_t(t),
        m_element_count(s)
    {}
    array(const array & rhs) :
        m_t(rhs.m_t),
        m_element_count(rhs.m_element_count)
    {}
    array & operator=(const array & rhs){
        m_t = rhs.m_t;
        m_element_count = rhs.m_element_count;
    }

    // default implementation
    template<class Archive>
    void serialize_optimized(Archive &ar, const unsigned int, mpl::false_ ) const
    {
      // default implemention does the loop
      std::size_t c = count();
      value_type * t = address();
      while(0 < c--)
            ar & boost::serialization::make_nvp("item", *t++);
    }

    // optimized implementation
    template<class Archive>
    void serialize_optimized(Archive &ar, const unsigned int version, mpl::true_ )
    {
      boost::serialization::split_member(ar, *this, version);
    }

    // default implementation
    template<class Archive>
    void save(Archive &ar, const unsigned int version) const
    {
      ar.save_array(*this,version);
    }

    // default implementation
    template<class Archive>
    void load(Archive &ar, const unsigned int version)
    {
      ar.load_array(*this,version);
    }
    
    // default implementation
    template<class Archive>
    void serialize(Archive &ar, const unsigned int version)
    {
      typedef typename 
          boost::serialization::use_array_optimization<Archive>::template apply<
                    typename remove_const< T >::type 
                >::type use_optimized;
      serialize_optimized(ar,version,use_optimized());
    }
    
    value_type* address() const
    {
      return m_t;
    }

    std::size_t count() const
    {
      return m_element_count;
    }
    
private:
    value_type* m_t;
    std::size_t m_element_count;
};

template<class T>
inline
const array< T > make_array( T* t, std::size_t s){
    return array< T >(t, s);
}

// implement serialization for boost::array
template <class Archive, class T, std::size_t N>
void serialize(Archive& ar, boost::array<T,N>& a, const unsigned int /* version */)
{
    ar & boost::serialization::make_nvp("elems", a.elems);
}

#ifndef BOOST_NO_CXX11_HDR_ARRAY
// implement serialization for std::array
template <class Archive, class T, std::size_t N>
void serialize(Archive& ar, std::array<T,N>& a, const unsigned int /* version */)
{
    ar & boost::serialization::make_nvp(
        "elems",
        *static_cast<T (*)[N]>(static_cast<void *>(a.data()))
    );
    
}
#endif

} } // end namespace boost::serialization

#define BOOST_SERIALIZATION_USE_ARRAY_OPTIMIZATION(Archive)           \
namespace boost { namespace serialization {                           \
template <> struct use_array_optimization<Archive> {                  \
  template <class ValueType>                                          \
  struct apply : boost::mpl::apply1<Archive::use_array_optimization   \
      , typename boost::remove_const<ValueType>::type   \
    >::type {};                                                       \
}; }}

#endif //BOOST_SERIALIZATION_ARRAY_HPP