cereal
A C++11 library for serialization
tuple.hpp
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1 
4 /*
5  Copyright (c) 2014, Randolph Voorhies, Shane Grant
6  All rights reserved.
7 
8  Redistribution and use in source and binary forms, with or without
9  modification, are permitted provided that the following conditions are met:
10  * Redistributions of source code must retain the above copyright
11  notice, this list of conditions and the following disclaimer.
12  * Redistributions in binary form must reproduce the above copyright
13  notice, this list of conditions and the following disclaimer in the
14  documentation and/or other materials provided with the distribution.
15  * Neither the name of cereal nor the
16  names of its contributors may be used to endorse or promote products
17  derived from this software without specific prior written permission.
18 
19  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
20  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22  DISCLAIMED. IN NO EVENT SHALL RANDOLPH VOORHIES OR SHANE GRANT BE LIABLE FOR ANY
23  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
26  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30 #ifndef CEREAL_TYPES_TUPLE_HPP_
31 #define CEREAL_TYPES_TUPLE_HPP_
32 
33 #include "cereal/cereal.hpp"
34 #include <tuple>
35 
36 namespace cereal
37 {
38  namespace tuple_detail
39  {
41 
44  template<char...Cs>
46  {
47  static const int size = 14;// Size of array for the word: tuple_element
48  typedef const char (&arr_type)[sizeof...(Cs) + size];
49  static const char str[sizeof...(Cs) + size];
50  };
51 
52  // the word tuple_element plus a number
54  template<char...Cs>
55  const char char_seq_to_c_str<Cs...>::str[sizeof...(Cs) + size] =
56  {'t','u','p','l','e','_','e','l','e','m','e','n','t', Cs..., '\0'};
57 
59 
63  template <size_t Q, size_t R, char ... C>
65  {
66  using type = typename to_string_impl<Q/10, Q%10, R+'0', C...>::type;
67  };
68 
70 
71  template <size_t R, char ... C>
72  struct to_string_impl<0, R, C...>
73  {
74  using type = char_seq_to_c_str<R+'0', C...>;
75  };
76 
78 
83  template<size_t T>
85  {
86  using type = typename to_string_impl<T/10, T%10>::type;
87  static const typename type::arr_type c_str(){ return type::str; };
88  };
89 
90  // unwinds a tuple to save it
92  template <size_t Height>
93  struct serialize
94  {
95  template <class Archive, class ... Types> inline
96  static void apply( Archive & ar, std::tuple<Types...> & tuple )
97  {
98  serialize<Height - 1>::template apply( ar, tuple );
100  std::get<Height - 1>( tuple )) );
101  }
102  };
103 
104  // Zero height specialization - nothing to do here
106  template <>
107  struct serialize<0>
108  {
109  template <class Archive, class ... Types> inline
110  static void apply( Archive &, std::tuple<Types...> & )
111  { }
112  };
113  }
114 
116  template <class Archive, class ... Types> inline
117  void CEREAL_SERIALIZE_FUNCTION_NAME( Archive & ar, std::tuple<Types...> & tuple )
118  {
119  tuple_detail::serialize<std::tuple_size<std::tuple<Types...>>::value>::template apply( ar, tuple );
120  }
121 } // namespace cereal
122 
123 #endif // CEREAL_TYPES_TUPLE_HPP_
#define CEREAL_NVP_(name, value)
Convenience for creating a templated NVP.
Definition: helpers.hpp:199
#define CEREAL_SERIALIZE_FUNCTION_NAME
The serialization/deserialization function name to search for.
Definition: macros.hpp:78
Converts a number into a sequence of characters.
Definition: tuple.hpp:64
Definition: access.hpp:40
Main cereal functionality.
Creates a c string from a sequence of characters.
Definition: tuple.hpp:45
Definition: tuple.hpp:93
Generates a c string for a given index of a tuple.
Definition: tuple.hpp:84