tuple.hpp
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/*
Copyright (c) 2014, Randolph Voorhies, Shane Grant
All rights reserved.
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modification, are permitted provided that the following conditions are met:
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* Redistributions in binary form must reproduce the above copyright
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* Neither the name of the copyright holder nor the
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*/
#ifndef CEREAL_TYPES_TUPLE_HPP_
#define CEREAL_TYPES_TUPLE_HPP_
#include "cereal/cereal.hpp"
#include <tuple>
namespace cereal
{
namespace tuple_detail
{
template<char...Cs>
struct char_seq_to_c_str
{
static const int size = 14;// Size of array for the word: tuple_element
typedef const char (&arr_type)[sizeof...(Cs) + size];
static const char str[sizeof...(Cs) + size];
};
// the word tuple_element plus a number
template<char...Cs>
const char char_seq_to_c_str<Cs...>::str[sizeof...(Cs) + size] =
{'t','u','p','l','e','_','e','l','e','m','e','n','t', Cs..., '\0'};
template <size_t Q, size_t R, char ... C>
struct to_string_impl
{
using type = typename to_string_impl<Q/10, Q%10, static_cast<char>(R+std::size_t{'0'}), C...>::type;
};
template <size_t R, char ... C>
struct to_string_impl<0, R, C...>
{
using type = char_seq_to_c_str<static_cast<char>(R+std::size_t{'0'}), C...>;
};
template<size_t T>
struct tuple_element_name
{
using type = typename to_string_impl<T/10, T%10>::type;
static const typename type::arr_type c_str(){ return type::str; }
};
// unwinds a tuple to save it
template <size_t Height>
struct serialize
{
template <class Archive, class ... Types> inline
static void apply( Archive & ar, std::tuple<Types...> & tuple )
{
serialize<Height - 1>::template apply( ar, tuple );
ar( CEREAL_NVP_(tuple_element_name<Height - 1>::c_str(),
std::get<Height - 1>( tuple )) );
}
};
// Zero height specialization - nothing to do here
template <>
struct serialize<0>
{
template <class Archive, class ... Types> inline
static void apply( Archive &, std::tuple<Types...> & )
{ }
};
}
template <class Archive, class ... Types> inline
void CEREAL_SERIALIZE_FUNCTION_NAME( Archive & ar, std::tuple<Types...> & tuple )
{
tuple_detail::serialize<std::tuple_size<std::tuple<Types...>>::value>::template apply( ar, tuple );
}
} // namespace cereal
#endif // CEREAL_TYPES_TUPLE_HPP_
CEREAL_NVP_
#define CEREAL_NVP_(name, value)
Convenience for creating a templated NVP.
Definition: helpers.hpp:201
cereal::tuple_detail::tuple_element_name
Generates a c string for a given index of a tuple.
Definition: tuple.hpp:84
CEREAL_SERIALIZE_FUNCTION_NAME
#define CEREAL_SERIALIZE_FUNCTION_NAME
The serialization/deserialization function name to search for.
Definition: macros.hpp:78
cereal::tuple_detail::serialize
Definition: tuple.hpp:93
cereal::tuple_detail::to_string_impl
Converts a number into a sequence of characters.
Definition: tuple.hpp:64
cereal::tuple_detail::char_seq_to_c_str
Creates a c string from a sequence of characters.
Definition: tuple.hpp:45
cereal.hpp
Main cereal functionality.