cereal
A C++11 library for serialization
optional.hpp
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1 
4 /*
5  Copyright (c) 2017, Juan Pedro Bolivar Puente
6  All rights reserved.
7 
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9  modification, are permitted provided that the following conditions are met:
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30 #ifndef CEREAL_TYPES_STD_OPTIONAL_
31 #define CEREAL_TYPES_STD_OPTIONAL_
32 
33 #include "cereal/cereal.hpp"
34 #include <optional>
35 
36 namespace cereal {
38  template <class Archive, typename T> inline
39  void CEREAL_SAVE_FUNCTION_NAME(Archive& ar, const std::optional<T>& optional)
40  {
41  if(!optional) {
42  ar(CEREAL_NVP_("nullopt", true));
43  } else {
44  ar(CEREAL_NVP_("nullopt", false),
45  CEREAL_NVP_("data", *optional));
46  }
47  }
48 
50  template <class Archive, typename T> inline
51  void CEREAL_LOAD_FUNCTION_NAME(Archive& ar, std::optional<T>& optional)
52  {
53  bool nullopt;
54  ar(CEREAL_NVP_("nullopt", nullopt));
55 
56  if (nullopt) {
57  optional = std::nullopt;
58  } else {
59  optional.emplace();
60  ar(CEREAL_NVP_("data", *optional));
61  }
62  }
63 } // namespace cereal
64 
65 #endif // CEREAL_TYPES_STD_OPTIONAL_
CEREAL_NVP_
#define CEREAL_NVP_(name, value)
Convenience for creating a templated NVP.
Definition: helpers.hpp:201
CEREAL_LOAD_FUNCTION_NAME
#define CEREAL_LOAD_FUNCTION_NAME
The deserialization (load) function name to search for.
Definition: macros.hpp:85
CEREAL_SAVE_FUNCTION_NAME
#define CEREAL_SAVE_FUNCTION_NAME
The serialization (save) function name to search for.
Definition: macros.hpp:92
cereal.hpp
Main cereal functionality.