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feat: std::is_object constraint applied to value_type_t

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Mateusz Pusz
2024-10-26 19:12:10 +02:00
parent 2a1edbe47a
commit 424f9665db
1 changed files with 8 additions and 3 deletions
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11
src/core/include/mp-units/ext/type_traits.h
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@@ -106,19 +106,24 @@ template<typename T>
requires { typename std::indirectly_readable_traits<T>::value_type; }
using wrapped_type_t = std::indirectly_readable_traits<T>::value_type;
namespace detail {
template<typename T>
struct value_type {
struct value_type_impl {
using type = T;
};
template<typename T>
requires requires { typename wrapped_type_t<T>; }
struct value_type<T> {
struct value_type_impl<T> {
using type = wrapped_type_t<T>;
};
} // namespace detail
template<typename T>
using value_type_t = value_type<T>::type;
requires std::is_object_v<T>
using value_type_t = detail::value_type_impl<T>::type;
template<typename T, typename... Ts>
concept one_of = (false || ... || std::same_as<T, Ts>);