less bin size, thanks @rollbear
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neargye
parent
f6a6c5de10
commit
23c959c3e2
1 changed files with 68 additions and 32 deletions
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@ -99,6 +99,26 @@ struct nameof_enum_supported final
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: std::false_type {};
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#endif
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template <std::size_t N>
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struct static_string final {
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constexpr static_string(std::string_view str) noexcept : static_string(str, std::make_index_sequence<N>{}) {}
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constexpr operator std::string_view() const noexcept { return {chars.data(), chars.size()}; }
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private:
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template <std::size_t... I>
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constexpr static_string(std::string_view str, std::index_sequence<I...>) noexcept : chars{{str[I]...}} {}
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const std::array<char, N> chars;
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};
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template <>
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struct static_string<0> final {
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constexpr static_string(std::string_view) noexcept {}
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constexpr operator std::string_view() const noexcept { return {}; }
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};
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template <typename T>
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using remove_cvref_t = std::remove_cv_t<std::remove_reference_t<T>>;
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@ -108,23 +128,23 @@ using enable_if_enum_t = std::enable_if_t<std::is_enum_v<remove_cvref_t<T>>, R>;
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template <typename T = void>
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[[nodiscard]] constexpr std::string_view nameof(std::string_view name, bool remove_template_suffix = true) noexcept {
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static_assert(std::is_void_v<T>, "nameof::detail::nameof requires void type.");
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if (name.length() >= 1 && (name.front() == '"' || name.front() == '\'')) {
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if (name.size() >= 1 && (name.front() == '"' || name.front() == '\'')) {
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return {}; // Narrow multibyte string literal.
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} else if (name.length() >= 2 && name[0] == 'R' && (name[1] == '"' || name[1] == '\'')) {
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} else if (name.size() >= 2 && name[0] == 'R' && (name[1] == '"' || name[1] == '\'')) {
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return {}; // Raw string literal.
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} else if (name.length() >= 2 && name[0] == 'L' && (name[1] == '"' || name[1] == '\'')) {
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} else if (name.size() >= 2 && name[0] == 'L' && (name[1] == '"' || name[1] == '\'')) {
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return {}; // Wide string literal.
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} else if (name.length() >= 2 && name[0] == 'U' && (name[1] == '"' || name[1] == '\'')) {
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} else if (name.size() >= 2 && name[0] == 'U' && (name[1] == '"' || name[1] == '\'')) {
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return {}; // UTF-32 encoded string literal.
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} else if (name.length() >= 2 && name[0] == 'u' && (name[1] == '"' || name[1] == '\'')) {
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} else if (name.size() >= 2 && name[0] == 'u' && (name[1] == '"' || name[1] == '\'')) {
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return {}; // UTF-16 encoded string literal.
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} else if (name.length() >= 3 && name[0] == 'u' && name[1] == '8' && (name[2] == '"' || name[2] == '\'')) {
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} else if (name.size() >= 3 && name[0] == 'u' && name[1] == '8' && (name[2] == '"' || name[2] == '\'')) {
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return {}; // UTF-8 encoded string literal.
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} else if (name.length() >= 1 && (name.front() >= '0' && name.front() <= '9')) {
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} else if (name.size() >= 1 && (name.front() >= '0' && name.front() <= '9')) {
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return {}; // Invalid name.
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}
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for (std::size_t i = name.length(), h = 0, s = 0; i > 0; --i) {
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for (std::size_t i = name.size(), h = 0, s = 0; i > 0; --i) {
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if (name[i - 1] == ')') {
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++h;
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++s;
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@ -145,7 +165,7 @@ template <typename T = void>
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}
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std::size_t s = 0;
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for (std::size_t i = name.length(), h = 0; i > 0; --i) {
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for (std::size_t i = name.size(), h = 0; i > 0; --i) {
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if (name[i - 1] == '>') {
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++h;
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++s;
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@ -164,7 +184,7 @@ template <typename T = void>
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}
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}
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for (std::size_t i = name.length() - s; i > 0; --i) {
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for (std::size_t i = name.size() - s; i > 0; --i) {
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if (!((name[i - 1] >= '0' && name[i - 1] <= '9') ||
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(name[i - 1] >= 'a' && name[i - 1] <= 'z') ||
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(name[i - 1] >= 'A' && name[i - 1] <= 'Z') ||
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@ -177,7 +197,7 @@ template <typename T = void>
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name.remove_suffix(s);
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}
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if (name.length() > 0 && ((name.front() >= 'a' && name.front() <= 'z') ||
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if (name.size() > 0 && ((name.front() >= 'a' && name.front() <= 'z') ||
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(name.front() >= 'A' && name.front() <= 'Z') ||
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(name.front() == '_'))) {
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return name;
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@ -197,38 +217,58 @@ template <typename E, E V>
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[[nodiscard]] constexpr auto n() noexcept {
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static_assert(std::is_enum_v<E>, "nameof::detail::nameof_enum requires enum type.");
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#if defined(__clang__) || defined(__GNUC__) && __GNUC__ >= 9
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return nameof({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2});
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constexpr auto name = nameof({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2});
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#elif defined(_MSC_VER)
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return nameof({__FUNCSIG__, sizeof(__FUNCSIG__) - 17});
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constexpr auto name = nameof({__FUNCSIG__, sizeof(__FUNCSIG__) - 17});
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#else
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return std::string_view{}; // Unsupported compiler.
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#endif
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#if defined(__clang__) || defined(__GNUC__) && __GNUC__ >= 9 || defined(_MSC_VER)
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return static_string<name.size()>{name};
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#endif
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}
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template <typename E, E V>
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inline constexpr auto nameof_enum_v = n<E, V>();
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template <typename E, int O, int... I>
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[[nodiscard]] constexpr auto enum_names(std::integer_sequence<int, I...>) noexcept {
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static_assert(std::is_enum_v<E>, "nameof::detail::enum_names requires enum type.");
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return std::array<std::string_view, sizeof...(I)>{{n<E, static_cast<E>(I + O)>()...}};
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return std::array<std::string_view, sizeof...(I)>{{nameof_enum_v<E, static_cast<E>(I + O)>...}};
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}
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template <typename... T>
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[[nodiscard]] constexpr auto n() noexcept {
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#if defined(__clang__)
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return std::string_view{__PRETTY_FUNCTION__ + 31, sizeof(__PRETTY_FUNCTION__) - 34};
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constexpr std::string_view name{__PRETTY_FUNCTION__ + 31, sizeof(__PRETTY_FUNCTION__) - 34};
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#elif defined(__GNUC__)
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return std::string_view{__PRETTY_FUNCTION__ + 46, sizeof(__PRETTY_FUNCTION__) - 49};
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constexpr std::string_view name{__PRETTY_FUNCTION__ + 46, sizeof(__PRETTY_FUNCTION__) - 49};
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#elif defined(_MSC_VER)
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return std::string_view{__FUNCSIG__ + 63, sizeof(__FUNCSIG__) - 81 - (__FUNCSIG__[sizeof(__FUNCSIG__) - 19] == ' ' ? 1 : 0)};
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constexpr std::string_view name{__FUNCSIG__ + 63, sizeof(__FUNCSIG__) - 81 - (__FUNCSIG__[sizeof(__FUNCSIG__) - 19] == ' ' ? 1 : 0)};
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#else
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return std::string_view{}; // Unsupported compiler.
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#endif
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#if defined(__clang__) || defined(__GNUC__) || defined(_MSC_VER)
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return static_string<name.size()>{name};
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#endif
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}
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#if defined(_MSC_VER)
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template <typename U, typename T = identity<U>>
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#else
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template <typename T>
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#endif
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inline constexpr auto nameof_type_v = n<T>();
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} // namespace nameof::detail
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// Checks is nameof_type supported compiler.
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inline constexpr auto is_nameof_type_supported = detail::nameof_type_supported<void>::value;
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// Checks is nameof_enum supported compiler.
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inline constexpr auto is_nameof_enum_supported = detail::nameof_enum_supported<void>::value;
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// Obtains simple (unqualified) string enum name of enum variable.
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@ -260,25 +300,21 @@ template <auto V>
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static_assert(detail::nameof_enum_supported<D>::value, "nameof::nameof_enum: Unsupported compiler (https://github.com/Neargye/nameof#compiler-compatibility).");
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static_assert(std::is_enum_v<D>, "nameof::nameof_enum requires enum type.");
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return detail::n<D, V>();
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}
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// Obtains string name of full type, with reference and cv-qualifiers.
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template <typename T>
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[[nodiscard]] constexpr std::string_view nameof_full_type() noexcept {
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static_assert(detail::nameof_type_supported<T>::value, "nameof::nameof_type: Unsupported compiler (https://github.com/Neargye/nameof#compiler-compatibility).");
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#if defined(_MSC_VER)
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return detail::n<detail::identity<T>>();
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#else
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return detail::n<T>();
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#endif
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return detail::nameof_enum_v<D, V>;
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}
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// Obtains string name of type, reference and cv-qualifiers are ignored.
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template <typename T>
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[[nodiscard]] constexpr std::string_view nameof_type() noexcept {
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static_assert(detail::nameof_type_supported<T>::value, "nameof::nameof_type: Unsupported compiler (https://github.com/Neargye/nameof#compiler-compatibility).");
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return nameof_full_type<detail::remove_cvref_t<T>>();
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return detail::nameof_type_v<detail::remove_cvref_t<T>>;
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}
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// Obtains string name of full type, with reference and cv-qualifiers.
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template <typename T>
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[[nodiscard]] constexpr std::string_view nameof_full_type() noexcept {
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static_assert(detail::nameof_type_supported<T>::value, "nameof::nameof_type: Unsupported compiler (https://github.com/Neargye/nameof#compiler-compatibility).");
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return detail::nameof_type_v<T>;
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}
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} // namespace nameof
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