add noexcept, move impl to detail
This commit is contained in:
neargye
parent
421dd51583
commit
7fb936bc3e
1 changed files with 28 additions and 30 deletions
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@ -56,7 +56,7 @@ constexpr bool is_bracket(char s) noexcept {
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return s == ')' || s == '}' || s == '>' || s == '(' || s == '{' || s == '<';
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}
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constexpr std::string_view pretty_name(std::string_view name, bool with_suffix) {
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constexpr std::string_view pretty_name(std::string_view name, bool with_suffix) noexcept {
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for (std::size_t i = name.size(), h = 0, s = 0; i > 0; --i) {
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if (h == 0 && is_lexeme(name[i - 1]) && !is_bracket(name[i - 1])) {
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++s;
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@ -114,26 +114,26 @@ constexpr std::string_view pretty_name(std::string_view name, bool with_suffix)
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}
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template <typename T>
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constexpr int nameof_enum_impl_() {
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constexpr int nameof_enum_impl_() noexcept {
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#if defined(__clang__)
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return sizeof(__PRETTY_FUNCTION__) - sizeof("int nameof::detail::nameof_enum_impl_() [T = ") - sizeof("]") + 1;
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#elif defined(__GNUC__)
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return sizeof(__PRETTY_FUNCTION__) - sizeof("constexpr int nameof::detail::nameof_enum_impl_() [with T = ") - sizeof("]") + 1;
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#elif defined(_MSC_VER)
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return sizeof(__FUNCSIG__) - sizeof("int __cdecl nameof::detail::nameof_enum_impl_<") - sizeof(">(void)") + 1;
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return sizeof(__FUNCSIG__) - sizeof("int __cdecl nameof::detail::nameof_enum_impl_<") - sizeof(">(void) noexcept") + 1;
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#else
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return 0;
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#endif
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}
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template <typename T, T V>
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constexpr std::string_view nameof_enum_impl() {
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constexpr std::string_view nameof_enum_impl() noexcept {
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#if defined(__clang__)
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const auto str = __PRETTY_FUNCTION__;
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const auto size = sizeof(__PRETTY_FUNCTION__) - 1;
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const auto prefix = sizeof("std::string_view nameof::detail::nameof_enum_impl() [T = ") + nameof_enum_impl_<T>() + sizeof("; V = ") - 2;
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const auto suffix = sizeof("]") - 1;
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return {str + prefix, size - prefix - suffix};
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return detail::pretty_name({str + prefix, size - prefix - suffix}, false);
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#elif defined(__GNUC__)
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const auto str = __PRETTY_FUNCTION__;
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const auto size = sizeof(__PRETTY_FUNCTION__) - 1;
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@ -144,8 +144,8 @@ constexpr std::string_view nameof_enum_impl() {
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const auto str = __FUNCSIG__;
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const auto size = sizeof(__FUNCSIG__) - 1;
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const auto prefix = sizeof("class std::basic_string_view<char,struct std::char_traits<char> > __cdecl nameof::detail::nameof_enum_impl<") + nameof_enum_impl_<T>();
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const auto suffix = sizeof(">(void)") - 1;
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return {str + prefix, size - prefix - suffix};
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const auto suffix = sizeof(">(void) noexcept") - 1;
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return detail::pretty_name({str + prefix, size - prefix - suffix}, false);
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#else
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return {};
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#endif
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@ -153,7 +153,7 @@ constexpr std::string_view nameof_enum_impl() {
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template <typename T, int I>
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struct nameof_enum_t {
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constexpr std::string_view operator()(int value) const {
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constexpr std::string_view operator()(int value) const noexcept {
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switch (value - I) {
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case 0:
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return nameof_enum_impl<T, T{I}>();
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@ -179,12 +179,12 @@ struct nameof_enum_t {
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template <typename T>
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struct nameof_enum_t<T, NAMEOF_ENUM_MAX_SEARCH_DEPTH> {
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constexpr std::string_view operator()(int) const {
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constexpr std::string_view operator()(int) const noexcept {
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return { "nameof_enum::out_of_range" };
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}
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};
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constexpr std::string_view nameof_type_impl_(std::string_view name) {
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constexpr std::string_view nameof_type_impl_(std::string_view name) noexcept {
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#if defined(_MSC_VER)
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if (name.size() > sizeof("enum") && name[0] == 'e' && name[1] == 'n' && name[2] == 'u' && name[3] == 'm' && name[4] == ' ') {
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name.remove_prefix(sizeof("enum"));
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@ -204,7 +204,7 @@ constexpr std::string_view nameof_type_impl_(std::string_view name) {
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}
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template <typename T>
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constexpr std::string_view nameof_type_impl() {
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constexpr std::string_view nameof_type_impl() noexcept {
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#if defined(__clang__)
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const auto str = __PRETTY_FUNCTION__;
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const auto size = sizeof(__PRETTY_FUNCTION__) - 1;
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@ -221,55 +221,53 @@ constexpr std::string_view nameof_type_impl() {
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const auto str = __FUNCSIG__;
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const auto size = sizeof(__FUNCSIG__) - 1;
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const auto prefix = sizeof("class std::basic_string_view<char,struct std::char_traits<char> > __cdecl nameof::detail::nameof_type_impl<struct nameof::detail::identity<") - 1;
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const auto suffix = sizeof(">>(void)") - 1;
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const auto suffix = sizeof(">>(void) noexcept") - 1;
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return nameof_type_impl_({str + prefix, size - prefix - suffix});
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#else
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return {};
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#endif
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}
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} // namespace detail
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template <typename T,
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typename = typename std::enable_if<!std::is_reference<T>::value>::type>
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constexpr std::string_view nameof(std::string_view name, bool with_suffix = false) {
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constexpr std::string_view nameof_impl(std::string_view name, bool with_suffix = false) noexcept {
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return detail::pretty_name(name, with_suffix);
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}
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template <typename T>
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constexpr std::string_view nameof_raw_impl(std::string_view name) noexcept {
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return name;
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}
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} // namespace detail
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template <typename T,
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typename = typename std::enable_if<std::is_enum<typename std::decay<T>::type>::value>::type>
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constexpr std::string_view nameof_enum(T value) {
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constexpr std::string_view nameof_enum(T value) noexcept {
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constexpr auto s = std::is_signed<typename std::underlying_type<typename std::decay<T>::type>::type>::value;
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const auto name = detail::nameof_enum_t<typename std::decay<T>::type, s ? -NAMEOF_ENUM_MAX_SEARCH_DEPTH : 0>{}(static_cast<int>(value));
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#if defined(__clang__) || defined(_MSC_VER)
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return detail::pretty_name(name, false);
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#elif defined(__GNUC__)
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return name;
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#else
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return {};
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#endif
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return detail::nameof_enum_t<typename std::decay<T>::type, s ? -NAMEOF_ENUM_MAX_SEARCH_DEPTH : 0>{}(static_cast<int>(value));
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}
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template <typename T>
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constexpr std::string_view nameof_type() {
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constexpr std::string_view nameof_type() noexcept {
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return detail::nameof_type_impl<detail::identity<T>>();
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}
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template <typename T>
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constexpr std::string_view nameof_raw(std::string_view name) {
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return name;
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constexpr std::string_view nameof_type(T) noexcept {
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return nameof_type<T>();
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}
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} // namespace nameof
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// Used to obtain the simple (unqualified) string name of a variable, member, function, enum, macros.
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#define NAMEOF(...) ::nameof::nameof<decltype(__VA_ARGS__)>(#__VA_ARGS__, false)
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#define NAMEOF(...) ::nameof::detail::nameof_impl<decltype(__VA_ARGS__)>(#__VA_ARGS__, false)
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// Used to obtain the full string name of a variable, member, function, enum, macros.
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#define NAMEOF_FULL(...) ::nameof::nameof<decltype(__VA_ARGS__)>(#__VA_ARGS__, true)
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#define NAMEOF_FULL(...) ::nameof::detail::nameof_impl<decltype(__VA_ARGS__)>(#__VA_ARGS__, true)
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// Used to obtain the raw string name of a variable, member, function, enum, macros.
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#define NAMEOF_RAW(...) ::nameof::nameof_raw<decltype(__VA_ARGS__)>(#__VA_ARGS__)
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#define NAMEOF_RAW(...) ::nameof::detail::nameof_raw_impl<decltype(__VA_ARGS__)>(#__VA_ARGS__)
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// Used to obtain the simple (unqualified) string name of a enum variable.
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#define NAMEOF_ENUM(...) ::nameof::nameof_enum<decltype(__VA_ARGS__)>(__VA_ARGS__)
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