55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
#ifndef RFL_FROM_NAMED_TUPLE_HPP_
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#define RFL_FROM_NAMED_TUPLE_HPP_
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#include <type_traits>
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#include "internal/copy_from_named_tuple.hpp"
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#include "internal/copy_from_tuple.hpp"
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#include "internal/has_fields.hpp"
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#include "internal/move_from_named_tuple.hpp"
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#include "internal/move_from_tuple.hpp"
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#include "named_tuple_t.hpp"
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namespace rfl {
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/// Generates the struct T from a named tuple.
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template <class T, class NamedTupleType>
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auto from_named_tuple(NamedTupleType&& _n) {
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using RequiredType = std::remove_cvref_t<rfl::named_tuple_t<T>>;
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if constexpr (!std::is_same<std::remove_cvref_t<NamedTupleType>,
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RequiredType>()) {
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return from_named_tuple<T>(
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RequiredType(std::forward<NamedTupleType>(_n)));
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} else if constexpr (internal::has_fields<T>()) {
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if constexpr (std::is_lvalue_reference<NamedTupleType> {}) {
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return internal::copy_from_named_tuple<T>(_n);
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} else {
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return internal::move_from_named_tuple<T>(_n);
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}
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} else {
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if constexpr (std::is_lvalue_reference<NamedTupleType> {}) {
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return internal::copy_from_tuple<T>(_n.values());
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} else {
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return internal::move_from_tuple<T>(std::move(_n.values()));
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}
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}
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}
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/// Generates the struct T from a named tuple.
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template <class T, class NamedTupleType>
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auto from_named_tuple(const NamedTupleType& _n) {
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using RequiredType = std::remove_cvref_t<rfl::named_tuple_t<T>>;
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if constexpr (!std::is_same<std::remove_cvref_t<NamedTupleType>,
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RequiredType>()) {
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return from_named_tuple<T>(RequiredType(_n));
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} else if constexpr (internal::has_fields<T>()) {
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return internal::copy_from_named_tuple<T>(_n);
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} else {
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return internal::copy_from_tuple<T>(_n.values());
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}
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}
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} // namespace rfl
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#endif
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