mirror of
https://github.com/ToruNiina/toml11.git
synced 2025-09-18 10:28:09 +08:00
204 lines
9.6 KiB
C++
204 lines
9.6 KiB
C++
#ifndef TOML11_CONVERSION_HPP
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#define TOML11_CONVERSION_HPP
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#include "find.hpp"
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#include "from.hpp" // IWYU pragma: keep
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#include "into.hpp" // IWYU pragma: keep
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#if defined(TOML11_HAS_OPTIONAL)
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#include <optional>
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namespace toml
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{
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namespace detail
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{
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template<typename T>
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inline constexpr bool is_optional_v = false;
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template<typename T>
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inline constexpr bool is_optional_v<std::optional<T>> = true;
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template<typename T, typename TC>
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void find_member_variable_from_value(T& obj, const basic_value<TC>& v, const char* var_name)
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{
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if constexpr(is_optional_v<T>)
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{
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if(v.contains(var_name))
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{
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obj = toml::find<typename T::value_type>(v, var_name);
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}
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else
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{
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obj = std::nullopt;
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}
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}
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else
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{
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obj = toml::find<T>(v, var_name);
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}
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}
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template<typename T, typename TC>
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void assign_member_variable_to_value(const T& obj, basic_value<TC>& v, const char* var_name)
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{
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if constexpr(is_optional_v<T>)
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{
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if(obj.has_value())
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{
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v[var_name] = obj.value();
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}
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}
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else
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{
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v[var_name] = obj;
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}
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}
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} // detail
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} // toml
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#else
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namespace toml
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{
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namespace detail
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{
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template<typename T, typename TC>
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void find_member_variable_from_value(T& obj, const basic_value<TC>& v, const char* var_name)
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{
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obj = toml::find<T>(v, var_name);
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}
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template<typename T, typename TC>
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void assign_member_variable_to_value(const T& obj, basic_value<TC>& v, const char* var_name)
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{
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v[var_name] = obj;
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}
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} // detail
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} // toml
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#endif // optional
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// use it in the following way.
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// ```cpp
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// namespace foo
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// {
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// struct Foo
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// {
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// std::string s;
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// double d;
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// int i;
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// };
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// } // foo
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//
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// TOML11_DEFINE_CONVERSION_NON_INTRUSIVE(foo::Foo, s, d, i)
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// ```
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//
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// And then you can use `toml::get<foo::Foo>(v)` and `toml::find<foo::Foo>(file, "foo");`
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//
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#define TOML11_STRINGIZE_AUX(x) #x
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#define TOML11_STRINGIZE(x) TOML11_STRINGIZE_AUX(x)
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#define TOML11_CONCATENATE_AUX(x, y) x##y
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#define TOML11_CONCATENATE(x, y) TOML11_CONCATENATE_AUX(x, y)
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// ============================================================================
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// TOML11_DEFINE_CONVERSION_NON_INTRUSIVE
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#ifndef TOML11_WITHOUT_DEFINE_NON_INTRUSIVE
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// ----------------------------------------------------------------------------
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// TOML11_ARGS_SIZE
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#define TOML11_INDEX_RSEQ() \
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32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, \
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16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
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#define TOML11_ARGS_SIZE_IMPL(\
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ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7, ARG8, ARG9, ARG10, \
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ARG11, ARG12, ARG13, ARG14, ARG15, ARG16, ARG17, ARG18, ARG19, ARG20, \
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ARG21, ARG22, ARG23, ARG24, ARG25, ARG26, ARG27, ARG28, ARG29, ARG30, \
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ARG31, ARG32, N, ...) N
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#define TOML11_ARGS_SIZE_AUX(...) TOML11_ARGS_SIZE_IMPL(__VA_ARGS__)
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#define TOML11_ARGS_SIZE(...) TOML11_ARGS_SIZE_AUX(__VA_ARGS__, TOML11_INDEX_RSEQ())
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// ----------------------------------------------------------------------------
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// TOML11_FOR_EACH_VA_ARGS
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#define TOML11_FOR_EACH_VA_ARGS_AUX_1( FUNCTOR, ARG1 ) FUNCTOR(ARG1)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_2( FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_1( FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_3( FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_2( FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_4( FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_3( FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_5( FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_4( FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_6( FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_5( FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_7( FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_6( FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_8( FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_7( FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_9( FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_8( FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_10(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_9( FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_11(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_10(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_12(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_11(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_13(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_12(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_14(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_13(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_15(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_14(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_16(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_15(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_17(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_16(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_18(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_17(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_19(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_18(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_20(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_19(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_21(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_20(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_22(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_21(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_23(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_22(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_24(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_23(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_25(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_24(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_26(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_25(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_27(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_26(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_28(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_27(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_29(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_28(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_30(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_29(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_31(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_30(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS_AUX_32(FUNCTOR, ARG1, ...) FUNCTOR(ARG1) TOML11_FOR_EACH_VA_ARGS_AUX_31(FUNCTOR, __VA_ARGS__)
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#define TOML11_FOR_EACH_VA_ARGS(FUNCTOR, ...)\
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TOML11_CONCATENATE(TOML11_FOR_EACH_VA_ARGS_AUX_, TOML11_ARGS_SIZE(__VA_ARGS__))(FUNCTOR, __VA_ARGS__)
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#define TOML11_FIND_MEMBER_VARIABLE_FROM_VALUE(VAR_NAME)\
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toml::detail::find_member_variable_from_value(obj.VAR_NAME, v, TOML11_STRINGIZE(VAR_NAME));
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#define TOML11_ASSIGN_MEMBER_VARIABLE_TO_VALUE(VAR_NAME)\
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toml::detail::assign_member_variable_to_value(obj.VAR_NAME, v, TOML11_STRINGIZE(VAR_NAME));
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#define TOML11_DEFINE_CONVERSION_NON_INTRUSIVE(NAME, ...)\
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namespace toml { \
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template<> \
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struct from<NAME> \
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{ \
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template<typename TC> \
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static NAME from_toml(const basic_value<TC>& v) \
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{ \
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NAME obj; \
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TOML11_FOR_EACH_VA_ARGS(TOML11_FIND_MEMBER_VARIABLE_FROM_VALUE, __VA_ARGS__) \
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return obj; \
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} \
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}; \
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template<> \
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struct into<NAME> \
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{ \
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template<typename TC> \
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static basic_value<TC> into_toml(const NAME& obj) \
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{ \
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::toml::basic_value<TC> v = typename ::toml::basic_value<TC>::table_type{}; \
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TOML11_FOR_EACH_VA_ARGS(TOML11_ASSIGN_MEMBER_VARIABLE_TO_VALUE, __VA_ARGS__) \
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return v; \
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} \
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}; \
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} /* toml */
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#endif// TOML11_WITHOUT_DEFINE_NON_INTRUSIVE
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#endif // TOML11_CONVERSION_HPP
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