50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
#ifndef RFL_REPLACE_HPP_
|
|
#define RFL_REPLACE_HPP_
|
|
|
|
#include <type_traits>
|
|
|
|
#include "from_named_tuple.hpp"
|
|
|
|
namespace rfl {
|
|
|
|
/// Replaces one or several fields, returning a new version
|
|
/// with the non-replaced fields left unchanged.
|
|
template <class T, class RField, class... OtherRFields>
|
|
auto replace(T&& _t, RField&& _field, OtherRFields&&... _other_fields) {
|
|
if constexpr (internal::is_named_tuple_v<T>) {
|
|
return std::forward<T>(_t).replace(
|
|
to_named_tuple(std::forward<RField>(_field)),
|
|
to_named_tuple(std::forward<OtherRFields>(_other_fields))...
|
|
);
|
|
} else {
|
|
return from_named_tuple<T>(
|
|
to_named_tuple(std::forward<T>(_t))
|
|
.replace(
|
|
to_named_tuple(std::forward<RField>(_field)),
|
|
to_named_tuple(std::forward<OtherRFields>(_other_fields))...
|
|
)
|
|
);
|
|
}
|
|
}
|
|
|
|
/// Replaces one or several fields, returning a new version
|
|
/// with the non-replaced fields left unchanged.
|
|
template <class T, class RField, class... OtherRFields>
|
|
auto replace(const T& _t, RField&& _field, OtherRFields&&... _other_fields) {
|
|
if constexpr (internal::is_named_tuple_v<T>) {
|
|
return _t.replace(
|
|
to_named_tuple(std::forward<RField>(_field)),
|
|
to_named_tuple(std::forward<OtherRFields>(_other_fields))...
|
|
);
|
|
} else {
|
|
return from_named_tuple<T>(to_named_tuple(_t).replace(
|
|
to_named_tuple(std::forward<RField>(_field)),
|
|
to_named_tuple(std::forward<OtherRFields>(_other_fields))...
|
|
));
|
|
}
|
|
}
|
|
|
|
} // namespace rfl
|
|
|
|
#endif
|