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add check type

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terik23 2019-04-14 18:16:24 +05:00
parent c0239a52e5
commit b68625ca7a
1 changed files with 11 additions and 3 deletions
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14
include/nameof.hpp
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@ -143,6 +143,14 @@ template <typename E, typename U = std::underlying_type_t<E>>
}
}
template <typename T>
struct check final {
using type = void;
};
template <typename T>
using check_t = typename check<T>::type;
template <typename T>
[[nodiscard]] constexpr std::string_view nameof_impl(std::string_view name, bool with_template_suffix) noexcept {
if (name.length() >= 1 && (name.front() == '"' || name.front() == '\'')) {
@ -245,13 +253,13 @@ template <typename T>
} // namespace nameof
// NAMEOF obtains simple (unqualified) string name of variable, function, enum, macro.
#define NAMEOF(...) ::nameof::detail::nameof_impl<decltype(__VA_ARGS__)>(#__VA_ARGS__, false)
#define NAMEOF(...) ::nameof::detail::nameof_impl<::nameof::detail::check_t<decltype(__VA_ARGS__)>>(#__VA_ARGS__, false)
// Obtains simple (unqualified) full (with template suffix) string name of variable, function, enum, macro.
#define NAMEOF_FULL(...) ::nameof::detail::nameof_impl<decltype(__VA_ARGS__)>(#__VA_ARGS__, true)
#define NAMEOF_FULL(...) ::nameof::detail::nameof_impl<::nameof::detail::check_t<decltype(__VA_ARGS__)>>(#__VA_ARGS__, true)
// Obtains raw string name of variable, function, enum, macro.
#define NAMEOF_RAW(...) ::nameof::detail::nameof_raw_impl<decltype(__VA_ARGS__)>(#__VA_ARGS__)
#define NAMEOF_RAW(...) ::nameof::detail::nameof_raw_impl<::nameof::detail::check_t<decltype(__VA_ARGS__)>>(#__VA_ARGS__)
// Obtains simple (unqualified) string enum name of enum variable.
#define NAMEOF_ENUM(...) ::nameof::nameof_enum<decltype(__VA_ARGS__)>(__VA_ARGS__)