Emily Boudreaux
ec13264050
A bug was discovered in glaze which prevented valid toml output. We have switched to toml++ and reflect-cpp. The interface has remained the same so this should not break any code
39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
#ifndef RFL_INTERNAL_TUPLE_CALCULATE_POSITIONS_HPP_
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#define RFL_INTERNAL_TUPLE_CALCULATE_POSITIONS_HPP_
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#include <array>
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namespace rfl::internal::tuple {
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template <class T>
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struct PositionWrapper {};
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template <unsigned long _last, unsigned long... _is>
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struct Positions {
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static consteval auto to_array() {
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return std::array<unsigned long, sizeof...(_is) + 1>({_is..., _last});
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}
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};
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template <class T, unsigned long _last, unsigned long... _is>
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consteval auto operator+(const Positions<_last, _is...>&,
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const PositionWrapper<T>&) {
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if constexpr (_last % alignof(T) == 0) {
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constexpr auto last_new = _last + sizeof(T);
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return Positions<last_new, _is..., _last>{};
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} else {
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constexpr auto last_corrected = _last + alignof(T) - (_last % alignof(T));
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constexpr auto last_new = last_corrected + sizeof(T);
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return Positions<last_new, _is..., last_corrected>{};
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}
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}
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template <class... Types>
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consteval auto calculate_positions() {
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return (Positions<0>{} + ... + PositionWrapper<Types>{}).to_array();
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}
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} // namespace rfl::internal::tuple
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#endif
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