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This commit is contained in:
Victor Zverovich
2023-12-19 17:51:41 -08:00
parent 3a2c50d4ac
commit d5da9cc40e
12 changed files with 274 additions and 241 deletions
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11
include/fmt/args.h
View File

@ -22,8 +22,9 @@ template <typename T> struct is_reference_wrapper : std::false_type {};
template <typename T>
struct is_reference_wrapper<std::reference_wrapper<T>> : std::true_type {};
template <typename T> const T& unwrap(const T& v) { return v; }
template <typename T> const T& unwrap(const std::reference_wrapper<T>& v) {
template <typename T> auto unwrap(const T& v) -> const T& { return v; }
template <typename T>
auto unwrap(const std::reference_wrapper<T>& v) -> const T& {
return static_cast<const T&>(v);
}
@ -50,7 +51,7 @@ class dynamic_arg_list {
std::unique_ptr<node<>> head_;
public:
template <typename T, typename Arg> const T& push(const Arg& arg) {
template <typename T, typename Arg> auto push(const Arg& arg) -> const T& {
auto new_node = std::unique_ptr<typed_node<T>>(new typed_node<T>(arg));
auto& value = new_node->value;
new_node->next = std::move(head_);
@ -110,14 +111,14 @@ class dynamic_format_arg_store
friend class basic_format_args<Context>;
unsigned long long get_types() const {
auto get_types() const -> unsigned long long {
return detail::is_unpacked_bit | data_.size() |
(named_info_.empty()
? 0ULL
: static_cast<unsigned long long>(detail::has_named_args_bit));
}
const basic_format_arg<Context>* data() const {
auto data() const -> const basic_format_arg<Context>* {
return named_info_.empty() ? data_.data() : data_.data() + 1;
}

133
include/fmt/chrono.h
View File

@ -72,7 +72,8 @@ template <typename To, typename From,
FMT_ENABLE_IF(!std::is_same<From, To>::value &&
std::numeric_limits<From>::is_signed ==
std::numeric_limits<To>::is_signed)>
FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) {
FMT_CONSTEXPR auto lossless_integral_conversion(const From from, int& ec)
-> To {
ec = 0;
using F = std::numeric_limits<From>;
using T = std::numeric_limits<To>;
@ -101,7 +102,8 @@ template <typename To, typename From,
FMT_ENABLE_IF(!std::is_same<From, To>::value &&
std::numeric_limits<From>::is_signed !=
std::numeric_limits<To>::is_signed)>
FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) {
FMT_CONSTEXPR auto lossless_integral_conversion(const From from, int& ec)
-> To {
ec = 0;
using F = std::numeric_limits<From>;
using T = std::numeric_limits<To>;
@ -133,7 +135,8 @@ FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) {
template <typename To, typename From,
FMT_ENABLE_IF(std::is_same<From, To>::value)>
FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) {
FMT_CONSTEXPR auto lossless_integral_conversion(const From from, int& ec)
-> To {
ec = 0;
return from;
} // function
@ -154,7 +157,7 @@ FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) {
// clang-format on
template <typename To, typename From,
FMT_ENABLE_IF(!std::is_same<From, To>::value)>
FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) {
FMT_CONSTEXPR auto safe_float_conversion(const From from, int& ec) -> To {
ec = 0;
using T = std::numeric_limits<To>;
static_assert(std::is_floating_point<From>::value, "From must be floating");
@ -176,7 +179,7 @@ FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) {
template <typename To, typename From,
FMT_ENABLE_IF(std::is_same<From, To>::value)>
FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) {
FMT_CONSTEXPR auto safe_float_conversion(const From from, int& ec) -> To {
ec = 0;
static_assert(std::is_floating_point<From>::value, "From must be floating");
return from;
@ -188,8 +191,8 @@ FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) {
template <typename To, typename FromRep, typename FromPeriod,
FMT_ENABLE_IF(std::is_integral<FromRep>::value),
FMT_ENABLE_IF(std::is_integral<typename To::rep>::value)>
To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from,
int& ec) {
auto safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from,
int& ec) -> To {
using From = std::chrono::duration<FromRep, FromPeriod>;
ec = 0;
// the basic idea is that we need to convert from count() in the from type
@ -240,8 +243,8 @@ To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from,
template <typename To, typename FromRep, typename FromPeriod,
FMT_ENABLE_IF(std::is_floating_point<FromRep>::value),
FMT_ENABLE_IF(std::is_floating_point<typename To::rep>::value)>
To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from,
int& ec) {
auto safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from,
int& ec) -> To {
using From = std::chrono::duration<FromRep, FromPeriod>;
ec = 0;
if (std::isnan(from.count())) {
@ -321,12 +324,12 @@ To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from,
namespace detail {
template <typename T = void> struct null {};
inline null<> localtime_r FMT_NOMACRO(...) { return null<>(); }
inline null<> localtime_s(...) { return null<>(); }
inline null<> gmtime_r(...) { return null<>(); }
inline null<> gmtime_s(...) { return null<>(); }
inline auto localtime_r FMT_NOMACRO(...) -> null<> { return null<>(); }
inline auto localtime_s(...) -> null<> { return null<>(); }
inline auto gmtime_r(...) -> null<> { return null<>(); }
inline auto gmtime_s(...) -> null<> { return null<>(); }
inline const std::locale& get_classic_locale() {
inline auto get_classic_locale() -> const std::locale& {
static const auto& locale = std::locale::classic();
return locale;
}
@ -442,7 +445,7 @@ struct is_same_arithmetic_type
template <
typename To, typename FromRep, typename FromPeriod,
FMT_ENABLE_IF(is_same_arithmetic_type<FromRep, typename To::rep>::value)>
To fmt_duration_cast(std::chrono::duration<FromRep, FromPeriod> from) {
auto fmt_duration_cast(std::chrono::duration<FromRep, FromPeriod> from) -> To {
#if FMT_SAFE_DURATION_CAST
// Throwing version of safe_duration_cast is only available for
// integer to integer or float to float casts.
@ -459,14 +462,15 @@ To fmt_duration_cast(std::chrono::duration<FromRep, FromPeriod> from) {
template <
typename To, typename FromRep, typename FromPeriod,
FMT_ENABLE_IF(!is_same_arithmetic_type<FromRep, typename To::rep>::value)>
To fmt_duration_cast(std::chrono::duration<FromRep, FromPeriod> from) {
auto fmt_duration_cast(std::chrono::duration<FromRep, FromPeriod> from) -> To {
// Mixed integer <-> float cast is not supported by safe_duration_cast.
return std::chrono::duration_cast<To>(from);
}
template <typename Duration>
std::time_t to_time_t(
std::chrono::time_point<std::chrono::system_clock, Duration> time_point) {
auto to_time_t(
std::chrono::time_point<std::chrono::system_clock, Duration> time_point)
-> std::time_t {
// Cannot use std::chrono::system_clock::to_time_t since this would first
// require a cast to std::chrono::system_clock::time_point, which could
// overflow.
@ -483,29 +487,29 @@ FMT_BEGIN_EXPORT
expressed in local time. Unlike ``std::localtime``, this function is
thread-safe on most platforms.
*/
inline std::tm localtime(std::time_t time) {
inline auto localtime(std::time_t time) -> std::tm {
struct dispatcher {
std::time_t time_;
std::tm tm_;
dispatcher(std::time_t t) : time_(t) {}
bool run() {
auto run() -> bool {
using namespace fmt::detail;
return handle(localtime_r(&time_, &tm_));
}
bool handle(std::tm* tm) { return tm != nullptr; }
auto handle(std::tm* tm) -> bool { return tm != nullptr; }
bool handle(detail::null<>) {
auto handle(detail::null<>) -> bool {
using namespace fmt::detail;
return fallback(localtime_s(&tm_, &time_));
}
bool fallback(int res) { return res == 0; }
auto fallback(int res) -> bool { return res == 0; }
#if !FMT_MSC_VERSION
bool fallback(detail::null<>) {
auto fallback(detail::null<>) -> bool {
using namespace fmt::detail;
std::tm* tm = std::localtime(&time_);
if (tm) tm_ = *tm;
@ -532,29 +536,29 @@ inline auto localtime(std::chrono::local_time<Duration> time) -> std::tm {
expressed in Coordinated Universal Time (UTC). Unlike ``std::gmtime``, this
function is thread-safe on most platforms.
*/
inline std::tm gmtime(std::time_t time) {
inline auto gmtime(std::time_t time) -> std::tm {
struct dispatcher {
std::time_t time_;
std::tm tm_;
dispatcher(std::time_t t) : time_(t) {}
bool run() {
auto run() -> bool {
using namespace fmt::detail;
return handle(gmtime_r(&time_, &tm_));
}
bool handle(std::tm* tm) { return tm != nullptr; }
auto handle(std::tm* tm) -> bool { return tm != nullptr; }
bool handle(detail::null<>) {
auto handle(detail::null<>) -> bool {
using namespace fmt::detail;
return fallback(gmtime_s(&tm_, &time_));
}
bool fallback(int res) { return res == 0; }
auto fallback(int res) -> bool { return res == 0; }
#if !FMT_MSC_VERSION
bool fallback(detail::null<>) {
auto fallback(detail::null<>) -> bool {
std::tm* tm = std::gmtime(&time_);
if (tm) tm_ = *tm;
return tm != nullptr;
@ -568,8 +572,9 @@ inline std::tm gmtime(std::time_t time) {
}
template <typename Duration>
inline std::tm gmtime(
std::chrono::time_point<std::chrono::system_clock, Duration> time_point) {
inline auto gmtime(
std::chrono::time_point<std::chrono::system_clock, Duration> time_point)
-> std::tm {
return gmtime(detail::to_time_t(time_point));
}
@ -609,7 +614,8 @@ inline void write_digit2_separated(char* buf, unsigned a, unsigned b,
}
}
template <typename Period> FMT_CONSTEXPR inline const char* get_units() {
template <typename Period>
FMT_CONSTEXPR inline auto get_units() -> const char* {
if (std::is_same<Period, std::atto>::value) return "as";
if (std::is_same<Period, std::femto>::value) return "fs";
if (std::is_same<Period, std::pico>::value) return "ps";
@ -665,9 +671,8 @@ auto write_padding(OutputIt out, pad_type pad) -> OutputIt {
// Parses a put_time-like format string and invokes handler actions.
template <typename Char, typename Handler>
FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin,
const Char* end,
Handler&& handler) {
FMT_CONSTEXPR auto parse_chrono_format(const Char* begin, const Char* end,
Handler&& handler) -> const Char* {
if (begin == end || *begin == '}') return begin;
if (*begin != '%') FMT_THROW(format_error("invalid format"));
auto ptr = begin;
@ -998,25 +1003,25 @@ struct tm_format_checker : null_chrono_spec_handler<tm_format_checker> {
FMT_CONSTEXPR void on_tz_name() {}
};
inline const char* tm_wday_full_name(int wday) {
inline auto tm_wday_full_name(int wday) -> const char* {
static constexpr const char* full_name_list[] = {
"Sunday", "Monday", "Tuesday", "Wednesday",
"Thursday", "Friday", "Saturday"};
return wday >= 0 && wday <= 6 ? full_name_list[wday] : "?";
}
inline const char* tm_wday_short_name(int wday) {
inline auto tm_wday_short_name(int wday) -> const char* {
static constexpr const char* short_name_list[] = {"Sun", "Mon", "Tue", "Wed",
"Thu", "Fri", "Sat"};
return wday >= 0 && wday <= 6 ? short_name_list[wday] : "???";
}
inline const char* tm_mon_full_name(int mon) {
inline auto tm_mon_full_name(int mon) -> const char* {
static constexpr const char* full_name_list[] = {
"January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December"};
return mon >= 0 && mon <= 11 ? full_name_list[mon] : "?";
}
inline const char* tm_mon_short_name(int mon) {
inline auto tm_mon_short_name(int mon) -> const char* {
static constexpr const char* short_name_list[] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
@ -1048,7 +1053,7 @@ inline void tzset_once() {
// Converts value to Int and checks that it's in the range [0, upper).
template <typename T, typename Int, FMT_ENABLE_IF(std::is_integral<T>::value)>
inline Int to_nonnegative_int(T value, Int upper) {
inline auto to_nonnegative_int(T value, Int upper) -> Int {
if (!std::is_unsigned<Int>::value &&
(value < 0 || to_unsigned(value) > to_unsigned(upper))) {
FMT_THROW(fmt::format_error("chrono value is out of range"));
@ -1056,13 +1061,13 @@ inline Int to_nonnegative_int(T value, Int upper) {
return static_cast<Int>(value);
}
template <typename T, typename Int, FMT_ENABLE_IF(!std::is_integral<T>::value)>
inline Int to_nonnegative_int(T value, Int upper) {
inline auto to_nonnegative_int(T value, Int upper) -> Int {
if (value < 0 || value > static_cast<T>(upper))
FMT_THROW(format_error("invalid value"));
return static_cast<Int>(value);
}
constexpr long long pow10(std::uint32_t n) {
constexpr auto pow10(std::uint32_t n) -> long long {
return n == 0 ? 1 : 10 * pow10(n - 1);
}
@ -1358,7 +1363,7 @@ class tm_writer {
subsecs_(subsecs),
tm_(tm) {}
OutputIt out() const { return out_; }
auto out() const -> OutputIt { return out_; }
FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) {
out_ = copy_str<Char>(begin, end, out_);
@ -1641,16 +1646,16 @@ struct chrono_format_checker : null_chrono_spec_handler<chrono_format_checker> {
template <typename T,
FMT_ENABLE_IF(std::is_integral<T>::value&& has_isfinite<T>::value)>
inline bool isfinite(T) {
inline auto isfinite(T) -> bool {
return true;
}
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
inline T mod(T x, int y) {
inline auto mod(T x, int y) -> T {
return x % static_cast<T>(y);
}
template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
inline T mod(T x, int y) {
inline auto mod(T x, int y) -> T {
return std::fmod(x, static_cast<T>(y));
}
@ -1667,8 +1672,8 @@ template <typename T> struct make_unsigned_or_unchanged<T, true> {
template <typename Rep, typename Period,
FMT_ENABLE_IF(std::is_integral<Rep>::value)>
inline std::chrono::duration<Rep, std::milli> get_milliseconds(
std::chrono::duration<Rep, Period> d) {
inline auto get_milliseconds(std::chrono::duration<Rep, Period> d)
-> std::chrono::duration<Rep, std::milli> {
// this may overflow and/or the result may not fit in the
// target type.
#if FMT_SAFE_DURATION_CAST
@ -1690,13 +1695,13 @@ inline std::chrono::duration<Rep, std::milli> get_milliseconds(
template <typename Char, typename Rep, typename OutputIt,
FMT_ENABLE_IF(std::is_integral<Rep>::value)>
OutputIt format_duration_value(OutputIt out, Rep val, int) {
auto format_duration_value(OutputIt out, Rep val, int) -> OutputIt {
return write<Char>(out, val);
}
template <typename Char, typename Rep, typename OutputIt,
FMT_ENABLE_IF(std::is_floating_point<Rep>::value)>
OutputIt format_duration_value(OutputIt out, Rep val, int precision) {
auto format_duration_value(OutputIt out, Rep val, int precision) -> OutputIt {
auto specs = format_specs<Char>();
specs.precision = precision;
specs.type = precision >= 0 ? presentation_type::fixed_lower
@ -1705,12 +1710,12 @@ OutputIt format_duration_value(OutputIt out, Rep val, int precision) {
}
template <typename Char, typename OutputIt>
OutputIt copy_unit(string_view unit, OutputIt out, Char) {
auto copy_unit(string_view unit, OutputIt out, Char) -> OutputIt {
return std::copy(unit.begin(), unit.end(), out);
}
template <typename OutputIt>
OutputIt copy_unit(string_view unit, OutputIt out, wchar_t) {
auto copy_unit(string_view unit, OutputIt out, wchar_t) -> OutputIt {
// This works when wchar_t is UTF-32 because units only contain characters
// that have the same representation in UTF-16 and UTF-32.
utf8_to_utf16 u(unit);
@ -1718,7 +1723,7 @@ OutputIt copy_unit(string_view unit, OutputIt out, wchar_t) {
}
template <typename Char, typename Period, typename OutputIt>
OutputIt format_duration_unit(OutputIt out) {
auto format_duration_unit(OutputIt out) -> OutputIt {
if (const char* unit = get_units<Period>())
return copy_unit(string_view(unit), out, Char());
*out++ = '[';
@ -1790,7 +1795,7 @@ struct chrono_formatter {
}
// returns true if nan or inf, writes to out.
bool handle_nan_inf() {
auto handle_nan_inf() -> bool {
if (isfinite(val)) {
return false;
}
@ -1807,18 +1812,22 @@ struct chrono_formatter {
return true;
}
Rep days() const { return static_cast<Rep>(s.count() / 86400); }
Rep hour() const { return static_cast<Rep>(mod((s.count() / 3600), 24)); }
auto days() const -> Rep { return static_cast<Rep>(s.count() / 86400); }
auto hour() const -> Rep {
return static_cast<Rep>(mod((s.count() / 3600), 24));
}
Rep hour12() const {
auto hour12() const -> Rep {
Rep hour = static_cast<Rep>(mod((s.count() / 3600), 12));
return hour <= 0 ? 12 : hour;
}
Rep minute() const { return static_cast<Rep>(mod((s.count() / 60), 60)); }
Rep second() const { return static_cast<Rep>(mod(s.count(), 60)); }
auto minute() const -> Rep {
return static_cast<Rep>(mod((s.count() / 60), 60));
}
auto second() const -> Rep { return static_cast<Rep>(mod(s.count(), 60)); }
std::tm time() const {
auto time() const -> std::tm {
auto time = std::tm();
time.tm_hour = to_nonnegative_int(hour(), 24);
time.tm_min = to_nonnegative_int(minute(), 60);
@ -2000,7 +2009,7 @@ class weekday {
weekday() = default;
explicit constexpr weekday(unsigned wd) noexcept
: value(static_cast<unsigned char>(wd != 7 ? wd : 0)) {}
constexpr unsigned c_encoding() const noexcept { return value; }
constexpr auto c_encoding() const noexcept -> unsigned { return value; }
};
class year_month_day {};

67
include/fmt/color.h
View File

@ -233,7 +233,7 @@ class text_style {
FMT_CONSTEXPR text_style(emphasis em = emphasis()) noexcept
: set_foreground_color(), set_background_color(), ems(em) {}
FMT_CONSTEXPR text_style& operator|=(const text_style& rhs) {
FMT_CONSTEXPR auto operator|=(const text_style& rhs) -> text_style& {
if (!set_foreground_color) {
set_foreground_color = rhs.set_foreground_color;
foreground_color = rhs.foreground_color;
@ -257,29 +257,29 @@ class text_style {
return *this;
}
friend FMT_CONSTEXPR text_style operator|(text_style lhs,
const text_style& rhs) {
friend FMT_CONSTEXPR auto operator|(text_style lhs, const text_style& rhs)
-> text_style {
return lhs |= rhs;
}
FMT_CONSTEXPR bool has_foreground() const noexcept {
FMT_CONSTEXPR auto has_foreground() const noexcept -> bool {
return set_foreground_color;
}
FMT_CONSTEXPR bool has_background() const noexcept {
FMT_CONSTEXPR auto has_background() const noexcept -> bool {
return set_background_color;
}
FMT_CONSTEXPR bool has_emphasis() const noexcept {
FMT_CONSTEXPR auto has_emphasis() const noexcept -> bool {
return static_cast<uint8_t>(ems) != 0;
}
FMT_CONSTEXPR detail::color_type get_foreground() const noexcept {
FMT_CONSTEXPR auto get_foreground() const noexcept -> detail::color_type {
FMT_ASSERT(has_foreground(), "no foreground specified for this style");
return foreground_color;
}
FMT_CONSTEXPR detail::color_type get_background() const noexcept {
FMT_CONSTEXPR auto get_background() const noexcept -> detail::color_type {
FMT_ASSERT(has_background(), "no background specified for this style");
return background_color;
}
FMT_CONSTEXPR emphasis get_emphasis() const noexcept {
FMT_CONSTEXPR auto get_emphasis() const noexcept -> emphasis {
FMT_ASSERT(has_emphasis(), "no emphasis specified for this style");
return ems;
}
@ -297,9 +297,11 @@ class text_style {
}
}
friend FMT_CONSTEXPR text_style fg(detail::color_type foreground) noexcept;
friend FMT_CONSTEXPR auto fg(detail::color_type foreground) noexcept
-> text_style;
friend FMT_CONSTEXPR text_style bg(detail::color_type background) noexcept;
friend FMT_CONSTEXPR auto bg(detail::color_type background) noexcept
-> text_style;
detail::color_type foreground_color;
detail::color_type background_color;
@ -309,16 +311,19 @@ class text_style {
};
/** Creates a text style from the foreground (text) color. */
FMT_CONSTEXPR inline text_style fg(detail::color_type foreground) noexcept {
FMT_CONSTEXPR inline auto fg(detail::color_type foreground) noexcept
-> text_style {
return text_style(true, foreground);
}
/** Creates a text style from the background color. */
FMT_CONSTEXPR inline text_style bg(detail::color_type background) noexcept {
FMT_CONSTEXPR inline auto bg(detail::color_type background) noexcept
-> text_style {
return text_style(false, background);
}
FMT_CONSTEXPR inline text_style operator|(emphasis lhs, emphasis rhs) noexcept {
FMT_CONSTEXPR inline auto operator|(emphasis lhs, emphasis rhs) noexcept
-> text_style {
return text_style(lhs) | rhs;
}
@ -384,8 +389,8 @@ template <typename Char> struct ansi_color_escape {
}
FMT_CONSTEXPR operator const Char*() const noexcept { return buffer; }
FMT_CONSTEXPR const Char* begin() const noexcept { return buffer; }
FMT_CONSTEXPR_CHAR_TRAITS const Char* end() const noexcept {
FMT_CONSTEXPR auto begin() const noexcept -> const Char* { return buffer; }
FMT_CONSTEXPR_CHAR_TRAITS auto end() const noexcept -> const Char* {
return buffer + std::char_traits<Char>::length(buffer);
}
@ -400,25 +405,27 @@ template <typename Char> struct ansi_color_escape {
out[2] = static_cast<Char>('0' + c % 10);
out[3] = static_cast<Char>(delimiter);
}
static FMT_CONSTEXPR bool has_emphasis(emphasis em, emphasis mask) noexcept {
static FMT_CONSTEXPR auto has_emphasis(emphasis em, emphasis mask) noexcept
-> bool {
return static_cast<uint8_t>(em) & static_cast<uint8_t>(mask);
}
};
template <typename Char>
FMT_CONSTEXPR ansi_color_escape<Char> make_foreground_color(
detail::color_type foreground) noexcept {
FMT_CONSTEXPR auto make_foreground_color(detail::color_type foreground) noexcept
-> ansi_color_escape<Char> {
return ansi_color_escape<Char>(foreground, "\x1b[38;2;");
}
template <typename Char>
FMT_CONSTEXPR ansi_color_escape<Char> make_background_color(
detail::color_type background) noexcept {
FMT_CONSTEXPR auto make_background_color(detail::color_type background) noexcept
-> ansi_color_escape<Char> {
return ansi_color_escape<Char>(background, "\x1b[48;2;");
}
template <typename Char>
FMT_CONSTEXPR ansi_color_escape<Char> make_emphasis(emphasis em) noexcept {
FMT_CONSTEXPR auto make_emphasis(emphasis em) noexcept
-> ansi_color_escape<Char> {
return ansi_color_escape<Char>(em);
}
@ -511,9 +518,10 @@ void print(const text_style& ts, const S& format_str, const Args&... args) {
}
template <typename S, typename Char = char_t<S>>
inline std::basic_string<Char> vformat(
inline auto vformat(
const text_style& ts, const S& format_str,
basic_format_args<buffer_context<type_identity_t<Char>>> args) {
basic_format_args<buffer_context<type_identity_t<Char>>> args)
-> std::basic_string<Char> {
basic_memory_buffer<Char> buf;
detail::vformat_to(buf, ts, detail::to_string_view(format_str), args);
return fmt::to_string(buf);
@ -532,8 +540,8 @@ inline std::basic_string<Char> vformat(
\endrst
*/
template <typename S, typename... Args, typename Char = char_t<S>>
inline std::basic_string<Char> format(const text_style& ts, const S& format_str,
const Args&... args) {
inline auto format(const text_style& ts, const S& format_str,
const Args&... args) -> std::basic_string<Char> {
return fmt::vformat(ts, detail::to_string_view(format_str),
fmt::make_format_args<buffer_context<Char>>(args...));
}
@ -543,9 +551,10 @@ inline std::basic_string<Char> format(const text_style& ts, const S& format_str,
*/
template <typename OutputIt, typename Char,
FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value)>
OutputIt vformat_to(
OutputIt out, const text_style& ts, basic_string_view<Char> format_str,
basic_format_args<buffer_context<type_identity_t<Char>>> args) {
auto vformat_to(OutputIt out, const text_style& ts,
basic_string_view<Char> format_str,
basic_format_args<buffer_context<type_identity_t<Char>>> args)
-> OutputIt {
auto&& buf = detail::get_buffer<Char>(out);
detail::vformat_to(buf, ts, format_str, args);
return detail::get_iterator(buf, out);

14
include/fmt/compile.h
View File

@ -14,8 +14,8 @@ FMT_BEGIN_NAMESPACE
namespace detail {
template <typename Char, typename InputIt>
FMT_CONSTEXPR inline counting_iterator copy_str(InputIt begin, InputIt end,
counting_iterator it) {
FMT_CONSTEXPR inline auto copy_str(InputIt begin, InputIt end,
counting_iterator it) -> counting_iterator {
return it + (end - begin);
}
@ -57,7 +57,7 @@ struct udl_compiled_string : compiled_string {
#endif
template <typename T, typename... Tail>
const T& first(const T& value, const Tail&...) {
auto first(const T& value, const Tail&...) -> const T& {
return value;
}
@ -488,8 +488,8 @@ FMT_CONSTEXPR OutputIt format_to(OutputIt out, const S&, Args&&... args) {
template <typename OutputIt, typename S, typename... Args,
FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
format_to_n_result<OutputIt> format_to_n(OutputIt out, size_t n,
const S& format_str, Args&&... args) {
auto format_to_n(OutputIt out, size_t n, const S& format_str, Args&&... args)
-> format_to_n_result<OutputIt> {
using traits = detail::fixed_buffer_traits;
auto buf = detail::iterator_buffer<OutputIt, char, traits>(out, n);
format_to(std::back_inserter(buf), format_str, std::forward<Args>(args)...);
@ -498,8 +498,8 @@ format_to_n_result<OutputIt> format_to_n(OutputIt out, size_t n,
template <typename S, typename... Args,
FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
FMT_CONSTEXPR20 size_t formatted_size(const S& format_str,
const Args&... args) {
FMT_CONSTEXPR20 auto formatted_size(const S& format_str, const Args&... args)
-> size_t {
return fmt::format_to(detail::counting_iterator(), format_str, args...)
.count();
}

12
include/fmt/core.h
View File

@ -471,15 +471,15 @@ template <typename Char> class basic_string_view {
size_ -= n;
}
FMT_CONSTEXPR_CHAR_TRAITS bool starts_with(
basic_string_view<Char> sv) const noexcept {
FMT_CONSTEXPR_CHAR_TRAITS auto starts_with(
basic_string_view<Char> sv) const noexcept -> bool {
return size_ >= sv.size_ &&
std::char_traits<Char>::compare(data_, sv.data_, sv.size_) == 0;
}
FMT_CONSTEXPR_CHAR_TRAITS bool starts_with(Char c) const noexcept {
FMT_CONSTEXPR_CHAR_TRAITS auto starts_with(Char c) const noexcept -> bool {
return size_ >= 1 && std::char_traits<Char>::eq(*data_, c);
}
FMT_CONSTEXPR_CHAR_TRAITS bool starts_with(const Char* s) const {
FMT_CONSTEXPR_CHAR_TRAITS auto starts_with(const Char* s) const -> bool {
return starts_with(basic_string_view<Char>(s));
}
@ -617,10 +617,10 @@ FMT_TYPE_CONSTANT(const Char*, cstring_type);
FMT_TYPE_CONSTANT(basic_string_view<Char>, string_type);
FMT_TYPE_CONSTANT(const void*, pointer_type);
constexpr bool is_integral_type(type t) {
constexpr auto is_integral_type(type t) -> bool {
return t > type::none_type && t <= type::last_integer_type;
}
constexpr bool is_arithmetic_type(type t) {
constexpr auto is_arithmetic_type(type t) -> bool {
return t > type::none_type && t <= type::last_numeric_type;
}

102
include/fmt/format-inl.h
View File

@ -85,7 +85,7 @@ locale_ref::locale_ref(const Locale& loc) : locale_(&loc) {
static_assert(std::is_same<Locale, std::locale>::value, "");
}
template <typename Locale> Locale locale_ref::get() const {
template <typename Locale> auto locale_ref::get() const -> Locale {
static_assert(std::is_same<Locale, std::locale>::value, "");
return locale_ ? *static_cast<const std::locale*>(locale_) : std::locale();
}
@ -97,7 +97,8 @@ FMT_FUNC auto thousands_sep_impl(locale_ref loc) -> thousands_sep_result<Char> {
auto thousands_sep = grouping.empty() ? Char() : facet.thousands_sep();
return {std::move(grouping), thousands_sep};
}
template <typename Char> FMT_FUNC Char decimal_point_impl(locale_ref loc) {
template <typename Char>
FMT_FUNC auto decimal_point_impl(locale_ref loc) -> Char {
return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>())
.decimal_point();
}
@ -143,24 +144,25 @@ FMT_API FMT_FUNC auto format_facet<std::locale>::do_put(
}
#endif
FMT_FUNC std::system_error vsystem_error(int error_code, string_view fmt,
format_args args) {
FMT_FUNC auto vsystem_error(int error_code, string_view fmt, format_args args)
-> std::system_error {
auto ec = std::error_code(error_code, std::generic_category());
return std::system_error(ec, vformat(fmt, args));
}
namespace detail {
template <typename F> inline bool operator==(basic_fp<F> x, basic_fp<F> y) {
template <typename F>
inline auto operator==(basic_fp<F> x, basic_fp<F> y) -> bool {
return x.f == y.f && x.e == y.e;
}
// Compilers should be able to optimize this into the ror instruction.
FMT_CONSTEXPR inline uint32_t rotr(uint32_t n, uint32_t r) noexcept {
FMT_CONSTEXPR inline auto rotr(uint32_t n, uint32_t r) noexcept -> uint32_t {
r &= 31;
return (n >> r) | (n << (32 - r));
}
FMT_CONSTEXPR inline uint64_t rotr(uint64_t n, uint32_t r) noexcept {
FMT_CONSTEXPR inline auto rotr(uint64_t n, uint32_t r) noexcept -> uint64_t {
r &= 63;
return (n >> r) | (n << (64 - r));
}
@ -169,14 +171,14 @@ FMT_CONSTEXPR inline uint64_t rotr(uint64_t n, uint32_t r) noexcept {
namespace dragonbox {
// Computes upper 64 bits of multiplication of a 32-bit unsigned integer and a
// 64-bit unsigned integer.
inline uint64_t umul96_upper64(uint32_t x, uint64_t y) noexcept {
inline auto umul96_upper64(uint32_t x, uint64_t y) noexcept -> uint64_t {
return umul128_upper64(static_cast<uint64_t>(x) << 32, y);
}
// Computes lower 128 bits of multiplication of a 64-bit unsigned integer and a
// 128-bit unsigned integer.
inline uint128_fallback umul192_lower128(uint64_t x,
uint128_fallback y) noexcept {
inline auto umul192_lower128(uint64_t x, uint128_fallback y) noexcept
-> uint128_fallback {
uint64_t high = x * y.high();
uint128_fallback high_low = umul128(x, y.low());
return {high + high_low.high(), high_low.low()};
@ -184,12 +186,12 @@ inline uint128_fallback umul192_lower128(uint64_t x,
// Computes lower 64 bits of multiplication of a 32-bit unsigned integer and a
// 64-bit unsigned integer.
inline uint64_t umul96_lower64(uint32_t x, uint64_t y) noexcept {
inline auto umul96_lower64(uint32_t x, uint64_t y) noexcept -> uint64_t {
return x * y;
}
// Various fast log computations.
inline int floor_log10_pow2_minus_log10_4_over_3(int e) noexcept {
inline auto floor_log10_pow2_minus_log10_4_over_3(int e) noexcept -> int {
FMT_ASSERT(e <= 2936 && e >= -2985, "too large exponent");
return (e * 631305 - 261663) >> 21;
}
@ -203,7 +205,7 @@ FMT_INLINE_VARIABLE constexpr struct {
// divisible by pow(10, N).
// Precondition: n <= pow(10, N + 1).
template <int N>
bool check_divisibility_and_divide_by_pow10(uint32_t& n) noexcept {
auto check_divisibility_and_divide_by_pow10(uint32_t& n) noexcept -> bool {
// The numbers below are chosen such that:
// 1. floor(n/d) = floor(nm / 2^k) where d=10 or d=100,
// 2. nm mod 2^k < m if and only if n is divisible by d,
@ -228,7 +230,7 @@ bool check_divisibility_and_divide_by_pow10(uint32_t& n) noexcept {
// Computes floor(n / pow(10, N)) for small n and N.
// Precondition: n <= pow(10, N + 1).
template <int N> uint32_t small_division_by_pow10(uint32_t n) noexcept {
template <int N> auto small_division_by_pow10(uint32_t n) noexcept -> uint32_t {
constexpr auto info = div_small_pow10_infos[N - 1];
FMT_ASSERT(n <= info.divisor * 10, "n is too large");
constexpr uint32_t magic_number =
@ -237,12 +239,12 @@ template <int N> uint32_t small_division_by_pow10(uint32_t n) noexcept {
}
// Computes floor(n / 10^(kappa + 1)) (float)
inline uint32_t divide_by_10_to_kappa_plus_1(uint32_t n) noexcept {
inline auto divide_by_10_to_kappa_plus_1(uint32_t n) noexcept -> uint32_t {
// 1374389535 = ceil(2^37/100)
return static_cast<uint32_t>((static_cast<uint64_t>(n) * 1374389535) >> 37);
}
// Computes floor(n / 10^(kappa + 1)) (double)
inline uint64_t divide_by_10_to_kappa_plus_1(uint64_t n) noexcept {
inline auto divide_by_10_to_kappa_plus_1(uint64_t n) noexcept -> uint64_t {
// 2361183241434822607 = ceil(2^(64+7)/1000)
return umul128_upper64(n, 2361183241434822607ull) >> 7;
}
@ -254,7 +256,7 @@ template <> struct cache_accessor<float> {
using carrier_uint = float_info<float>::carrier_uint;
using cache_entry_type = uint64_t;
static uint64_t get_cached_power(int k) noexcept {
static auto get_cached_power(int k) noexcept -> uint64_t {
FMT_ASSERT(k >= float_info<float>::min_k && k <= float_info<float>::max_k,
"k is out of range");
static constexpr const uint64_t pow10_significands[] = {
@ -296,20 +298,23 @@ template <> struct cache_accessor<float> {
bool is_integer;
};
static compute_mul_result compute_mul(
carrier_uint u, const cache_entry_type& cache) noexcept {
static auto compute_mul(carrier_uint u,
const cache_entry_type& cache) noexcept
-> compute_mul_result {
auto r = umul96_upper64(u, cache);
return {static_cast<carrier_uint>(r >> 32),
static_cast<carrier_uint>(r) == 0};
}
static uint32_t compute_delta(const cache_entry_type& cache,
int beta) noexcept {
static auto compute_delta(const cache_entry_type& cache, int beta) noexcept
-> uint32_t {
return static_cast<uint32_t>(cache >> (64 - 1 - beta));
}
static compute_mul_parity_result compute_mul_parity(
carrier_uint two_f, const cache_entry_type& cache, int beta) noexcept {
static auto compute_mul_parity(carrier_uint two_f,
const cache_entry_type& cache,
int beta) noexcept
-> compute_mul_parity_result {
FMT_ASSERT(beta >= 1, "");
FMT_ASSERT(beta < 64, "");
@ -318,22 +323,22 @@ template <> struct cache_accessor<float> {
static_cast<uint32_t>(r >> (32 - beta)) == 0};
}
static carrier_uint compute_left_endpoint_for_shorter_interval_case(
const cache_entry_type& cache, int beta) noexcept {
static auto compute_left_endpoint_for_shorter_interval_case(
const cache_entry_type& cache, int beta) noexcept -> carrier_uint {
return static_cast<carrier_uint>(
(cache - (cache >> (num_significand_bits<float>() + 2))) >>
(64 - num_significand_bits<float>() - 1 - beta));
}
static carrier_uint compute_right_endpoint_for_shorter_interval_case(
const cache_entry_type& cache, int beta) noexcept {
static auto compute_right_endpoint_for_shorter_interval_case(
const cache_entry_type& cache, int beta) noexcept -> carrier_uint {
return static_cast<carrier_uint>(
(cache + (cache >> (num_significand_bits<float>() + 1))) >>
(64 - num_significand_bits<float>() - 1 - beta));
}
static carrier_uint compute_round_up_for_shorter_interval_case(
const cache_entry_type& cache, int beta) noexcept {
static auto compute_round_up_for_shorter_interval_case(
const cache_entry_type& cache, int beta) noexcept -> carrier_uint {
return (static_cast<carrier_uint>(
cache >> (64 - num_significand_bits<float>() - 2 - beta)) +
1) /
@ -345,7 +350,7 @@ template <> struct cache_accessor<double> {
using carrier_uint = float_info<double>::carrier_uint;
using cache_entry_type = uint128_fallback;
static uint128_fallback get_cached_power(int k) noexcept {
static auto get_cached_power(int k) noexcept -> uint128_fallback {
FMT_ASSERT(k >= float_info<double>::min_k && k <= float_info<double>::max_k,
"k is out of range");
@ -1069,19 +1074,22 @@ template <> struct cache_accessor<double> {
bool is_integer;
};
static compute_mul_result compute_mul(
carrier_uint u, const cache_entry_type& cache) noexcept {
static auto compute_mul(carrier_uint u,
const cache_entry_type& cache) noexcept
-> compute_mul_result {
auto r = umul192_upper128(u, cache);
return {r.high(), r.low() == 0};
}
static uint32_t compute_delta(cache_entry_type const& cache,
int beta) noexcept {
static auto compute_delta(cache_entry_type const& cache, int beta) noexcept
-> uint32_t {
return static_cast<uint32_t>(cache.high() >> (64 - 1 - beta));
}
static compute_mul_parity_result compute_mul_parity(
carrier_uint two_f, const cache_entry_type& cache, int beta) noexcept {
static auto compute_mul_parity(carrier_uint two_f,
const cache_entry_type& cache,
int beta) noexcept
-> compute_mul_parity_result {
FMT_ASSERT(beta >= 1, "");
FMT_ASSERT(beta < 64, "");
@ -1090,35 +1098,35 @@ template <> struct cache_accessor<double> {
((r.high() << beta) | (r.low() >> (64 - beta))) == 0};
}
static carrier_uint compute_left_endpoint_for_shorter_interval_case(
const cache_entry_type& cache, int beta) noexcept {
static auto compute_left_endpoint_for_shorter_interval_case(
const cache_entry_type& cache, int beta) noexcept -> carrier_uint {
return (cache.high() -
(cache.high() >> (num_significand_bits<double>() + 2))) >>
(64 - num_significand_bits<double>() - 1 - beta);
}
static carrier_uint compute_right_endpoint_for_shorter_interval_case(
const cache_entry_type& cache, int beta) noexcept {
static auto compute_right_endpoint_for_shorter_interval_case(
const cache_entry_type& cache, int beta) noexcept -> carrier_uint {
return (cache.high() +
(cache.high() >> (num_significand_bits<double>() + 1))) >>
(64 - num_significand_bits<double>() - 1 - beta);
}
static carrier_uint compute_round_up_for_shorter_interval_case(
const cache_entry_type& cache, int beta) noexcept {
static auto compute_round_up_for_shorter_interval_case(
const cache_entry_type& cache, int beta) noexcept -> carrier_uint {
return ((cache.high() >> (64 - num_significand_bits<double>() - 2 - beta)) +
1) /
2;
}
};
FMT_FUNC uint128_fallback get_cached_power(int k) noexcept {
FMT_FUNC auto get_cached_power(int k) noexcept -> uint128_fallback {
return cache_accessor<double>::get_cached_power(k);
}
// Various integer checks
template <typename T>
bool is_left_endpoint_integer_shorter_interval(int exponent) noexcept {
auto is_left_endpoint_integer_shorter_interval(int exponent) noexcept -> bool {
const int case_shorter_interval_left_endpoint_lower_threshold = 2;
const int case_shorter_interval_left_endpoint_upper_threshold = 3;
return exponent >= case_shorter_interval_left_endpoint_lower_threshold &&
@ -1232,7 +1240,7 @@ FMT_INLINE decimal_fp<T> shorter_interval_case(int exponent) noexcept {
return ret_value;
}
template <typename T> decimal_fp<T> to_decimal(T x) noexcept {
template <typename T> auto to_decimal(T x) noexcept -> decimal_fp<T> {
// Step 1: integer promotion & Schubfach multiplier calculation.
using carrier_uint = typename float_info<T>::carrier_uint;
@ -1415,7 +1423,7 @@ FMT_FUNC void report_system_error(int error_code,
report_error(format_system_error, error_code, message);
}
FMT_FUNC std::string vformat(string_view fmt, format_args args) {
FMT_FUNC auto vformat(string_view fmt, format_args args) -> std::string {
// Don't optimize the "{}" case to keep the binary size small and because it
// can be better optimized in fmt::format anyway.
auto buffer = memory_buffer();
@ -1425,7 +1433,7 @@ FMT_FUNC std::string vformat(string_view fmt, format_args args) {
namespace detail {
#if !defined(_WIN32) || defined(FMT_WINDOWS_NO_WCHAR)
FMT_FUNC bool write_console(int, string_view) { return false; }
FMT_FUNC auto write_console(int, string_view) -> bool { return false; }
#else
using dword = conditional_t<sizeof(long) == 4, unsigned long, unsigned>;
extern "C" __declspec(dllimport) int __stdcall WriteConsoleW( //

112
include/fmt/format.h
View File

@ -377,8 +377,8 @@ class uint128_fallback {
constexpr uint128_fallback(uint64_t hi, uint64_t lo) : lo_(lo), hi_(hi) {}
constexpr uint128_fallback(uint64_t value = 0) : lo_(value), hi_(0) {}
constexpr uint64_t high() const noexcept { return hi_; }
constexpr uint64_t low() const noexcept { return lo_; }
constexpr auto high() const noexcept -> uint64_t { return hi_; }
constexpr auto low() const noexcept -> uint64_t { return lo_; }
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
constexpr explicit operator T() const {
@ -454,7 +454,7 @@ class uint128_fallback {
hi_ &= n.hi_;
}
FMT_CONSTEXPR20 uint128_fallback& operator+=(uint64_t n) noexcept {
FMT_CONSTEXPR20 auto operator+=(uint64_t n) noexcept -> uint128_fallback& {
if (is_constant_evaluated()) {
lo_ += n;
hi_ += (lo_ < n ? 1 : 0);
@ -744,7 +744,7 @@ inline auto compute_width(basic_string_view<Char> s) -> size_t {
}
// Computes approximate display width of a UTF-8 string.
FMT_CONSTEXPR inline size_t compute_width(string_view s) {
FMT_CONSTEXPR inline auto compute_width(string_view s) -> size_t {
size_t num_code_points = 0;
// It is not a lambda for compatibility with C++14.
struct count_code_points {
@ -1042,7 +1042,7 @@ struct is_contiguous<basic_memory_buffer<T, SIZE, Allocator>> : std::true_type {
FMT_END_EXPORT
namespace detail {
FMT_API bool write_console(int fd, string_view text);
FMT_API auto write_console(int fd, string_view text) -> bool;
FMT_API void print(std::FILE*, string_view);
} // namespace detail
@ -1167,7 +1167,7 @@ using uint64_or_128_t = conditional_t<num_bits<T>() <= 64, uint64_t, uint128_t>;
(factor) * 100000000, (factor) * 1000000000
// Converts value in the range [0, 100) to a string.
constexpr const char* digits2(size_t value) {
constexpr auto digits2(size_t value) -> const char* {
// GCC generates slightly better code when value is pointer-size.
return &"0001020304050607080910111213141516171819"
"2021222324252627282930313233343536373839"
@ -1177,7 +1177,7 @@ constexpr const char* digits2(size_t value) {
}
// Sign is a template parameter to workaround a bug in gcc 4.8.
template <typename Char, typename Sign> constexpr Char sign(Sign s) {
template <typename Char, typename Sign> constexpr auto sign(Sign s) -> Char {
#if !FMT_GCC_VERSION || FMT_GCC_VERSION >= 604
static_assert(std::is_same<Sign, sign_t>::value, "");
#endif
@ -1438,22 +1438,23 @@ template <typename WChar, typename Buffer = memory_buffer> class to_utf8 {
: "invalid utf32"));
}
operator string_view() const { return string_view(&buffer_[0], size()); }
size_t size() const { return buffer_.size() - 1; }
const char* c_str() const { return &buffer_[0]; }
std::string str() const { return std::string(&buffer_[0], size()); }
auto size() const -> size_t { return buffer_.size() - 1; }
auto c_str() const -> const char* { return &buffer_[0]; }
auto str() const -> std::string { return std::string(&buffer_[0], size()); }
// Performs conversion returning a bool instead of throwing exception on
// conversion error. This method may still throw in case of memory allocation
// error.
bool convert(basic_string_view<WChar> s,
to_utf8_error_policy policy = to_utf8_error_policy::abort) {
auto convert(basic_string_view<WChar> s,
to_utf8_error_policy policy = to_utf8_error_policy::abort)
-> bool {
if (!convert(buffer_, s, policy)) return false;
buffer_.push_back(0);
return true;
}
static bool convert(
Buffer& buf, basic_string_view<WChar> s,
to_utf8_error_policy policy = to_utf8_error_policy::abort) {
static auto convert(Buffer& buf, basic_string_view<WChar> s,
to_utf8_error_policy policy = to_utf8_error_policy::abort)
-> bool {
for (auto p = s.begin(); p != s.end(); ++p) {
uint32_t c = static_cast<uint32_t>(*p);
if (sizeof(WChar) == 2 && c >= 0xd800 && c <= 0xdfff) {
@ -1489,7 +1490,7 @@ template <typename WChar, typename Buffer = memory_buffer> class to_utf8 {
};
// Computes 128-bit result of multiplication of two 64-bit unsigned integers.
inline uint128_fallback umul128(uint64_t x, uint64_t y) noexcept {
inline auto umul128(uint64_t x, uint64_t y) noexcept -> uint128_fallback {
#if FMT_USE_INT128
auto p = static_cast<uint128_opt>(x) * static_cast<uint128_opt>(y);
return {static_cast<uint64_t>(p >> 64), static_cast<uint64_t>(p)};
@ -1520,19 +1521,19 @@ inline uint128_fallback umul128(uint64_t x, uint64_t y) noexcept {
namespace dragonbox {
// Computes floor(log10(pow(2, e))) for e in [-2620, 2620] using the method from
// https://fmt.dev/papers/Dragonbox.pdf#page=28, section 6.1.
inline int floor_log10_pow2(int e) noexcept {
inline auto floor_log10_pow2(int e) noexcept -> int {
FMT_ASSERT(e <= 2620 && e >= -2620, "too large exponent");
static_assert((-1 >> 1) == -1, "right shift is not arithmetic");
return (e * 315653) >> 20;
}
inline int floor_log2_pow10(int e) noexcept {
inline auto floor_log2_pow10(int e) noexcept -> int {
FMT_ASSERT(e <= 1233 && e >= -1233, "too large exponent");
return (e * 1741647) >> 19;
}
// Computes upper 64 bits of multiplication of two 64-bit unsigned integers.
inline uint64_t umul128_upper64(uint64_t x, uint64_t y) noexcept {
inline auto umul128_upper64(uint64_t x, uint64_t y) noexcept -> uint64_t {
#if FMT_USE_INT128
auto p = static_cast<uint128_opt>(x) * static_cast<uint128_opt>(y);
return static_cast<uint64_t>(p >> 64);
@ -1545,14 +1546,14 @@ inline uint64_t umul128_upper64(uint64_t x, uint64_t y) noexcept {
// Computes upper 128 bits of multiplication of a 64-bit unsigned integer and a
// 128-bit unsigned integer.
inline uint128_fallback umul192_upper128(uint64_t x,
uint128_fallback y) noexcept {
inline auto umul192_upper128(uint64_t x, uint128_fallback y) noexcept
-> uint128_fallback {
uint128_fallback r = umul128(x, y.high());
r += umul128_upper64(x, y.low());
return r;
}
FMT_API uint128_fallback get_cached_power(int k) noexcept;
FMT_API auto get_cached_power(int k) noexcept -> uint128_fallback;
// Type-specific information that Dragonbox uses.
template <typename T, typename Enable = void> struct float_info;
@ -1606,14 +1607,14 @@ template <typename T> FMT_API auto to_decimal(T x) noexcept -> decimal_fp<T>;
} // namespace dragonbox
// Returns true iff Float has the implicit bit which is not stored.
template <typename Float> constexpr bool has_implicit_bit() {
template <typename Float> constexpr auto has_implicit_bit() -> bool {
// An 80-bit FP number has a 64-bit significand an no implicit bit.
return std::numeric_limits<Float>::digits != 64;
}
// Returns the number of significand bits stored in Float. The implicit bit is
// not counted since it is not stored.
template <typename Float> constexpr int num_significand_bits() {
template <typename Float> constexpr auto num_significand_bits() -> int {
// std::numeric_limits may not support __float128.
return is_float128<Float>() ? 112
: (std::numeric_limits<Float>::digits -
@ -1706,7 +1707,7 @@ using fp = basic_fp<unsigned long long>;
// Normalizes the value converted from double and multiplied by (1 << SHIFT).
template <int SHIFT = 0, typename F>
FMT_CONSTEXPR basic_fp<F> normalize(basic_fp<F> value) {
FMT_CONSTEXPR auto normalize(basic_fp<F> value) -> basic_fp<F> {
// Handle subnormals.
const auto implicit_bit = F(1) << num_significand_bits<double>();
const auto shifted_implicit_bit = implicit_bit << SHIFT;
@ -1723,7 +1724,7 @@ FMT_CONSTEXPR basic_fp<F> normalize(basic_fp<F> value) {
}
// Computes lhs * rhs / pow(2, 64) rounded to nearest with half-up tie breaking.
FMT_CONSTEXPR inline uint64_t multiply(uint64_t lhs, uint64_t rhs) {
FMT_CONSTEXPR inline auto multiply(uint64_t lhs, uint64_t rhs) -> uint64_t {
#if FMT_USE_INT128
auto product = static_cast<__uint128_t>(lhs) * rhs;
auto f = static_cast<uint64_t>(product >> 64);
@ -1740,7 +1741,7 @@ FMT_CONSTEXPR inline uint64_t multiply(uint64_t lhs, uint64_t rhs) {
#endif
}
FMT_CONSTEXPR inline fp operator*(fp x, fp y) {
FMT_CONSTEXPR inline auto operator*(fp x, fp y) -> fp {
return {multiply(x.f, y.f), x.e + y.e + 64};
}
@ -2057,10 +2058,10 @@ template <typename Char> class digit_grouping {
std::string::const_iterator group;
int pos;
};
next_state initial_state() const { return {grouping_.begin(), 0}; }
auto initial_state() const -> next_state { return {grouping_.begin(), 0}; }
// Returns the next digit group separator position.
int next(next_state& state) const {
auto next(next_state& state) const -> int {
if (thousands_sep_.empty()) return max_value<int>();
if (state.group == grouping_.end()) return state.pos += grouping_.back();
if (*state.group <= 0 || *state.group == max_value<char>())
@ -2079,9 +2080,9 @@ template <typename Char> class digit_grouping {
digit_grouping(std::string grouping, std::basic_string<Char> sep)
: grouping_(std::move(grouping)), thousands_sep_(std::move(sep)) {}
bool has_separator() const { return !thousands_sep_.empty(); }
auto has_separator() const -> bool { return !thousands_sep_.empty(); }
int count_separators(int num_digits) const {
auto count_separators(int num_digits) const -> int {
int count = 0;
auto state = initial_state();
while (num_digits > next(state)) ++count;
@ -2090,7 +2091,7 @@ template <typename Char> class digit_grouping {
// Applies grouping to digits and write the output to out.
template <typename Out, typename C>
Out apply(Out out, basic_string_view<C> digits) const {
auto apply(Out out, basic_string_view<C> digits) const -> Out {
auto num_digits = static_cast<int>(digits.size());
auto separators = basic_memory_buffer<int>();
separators.push_back(0);
@ -2331,25 +2332,25 @@ class counting_iterator {
FMT_CONSTEXPR counting_iterator() : count_(0) {}
FMT_CONSTEXPR size_t count() const { return count_; }
FMT_CONSTEXPR auto count() const -> size_t { return count_; }
FMT_CONSTEXPR counting_iterator& operator++() {
FMT_CONSTEXPR auto operator++() -> counting_iterator& {
++count_;
return *this;
}
FMT_CONSTEXPR counting_iterator operator++(int) {
FMT_CONSTEXPR auto operator++(int) -> counting_iterator {
auto it = *this;
++*this;
return it;
}
FMT_CONSTEXPR friend counting_iterator operator+(counting_iterator it,
difference_type n) {
FMT_CONSTEXPR friend auto operator+(counting_iterator it, difference_type n)
-> counting_iterator {
it.count_ += static_cast<size_t>(n);
return it;
}
FMT_CONSTEXPR value_type operator*() const { return {}; }
FMT_CONSTEXPR auto operator*() const -> value_type { return {}; }
};
template <typename Char, typename OutputIt>
@ -2750,12 +2751,12 @@ template <typename Char> class fallback_digit_grouping {
public:
constexpr fallback_digit_grouping(locale_ref, bool) {}
constexpr bool has_separator() const { return false; }
constexpr auto has_separator() const -> bool { return false; }
constexpr int count_separators(int) const { return 0; }
constexpr auto count_separators(int) const -> int { return 0; }
template <typename Out, typename C>
constexpr Out apply(Out out, basic_string_view<C>) const {
constexpr auto apply(Out out, basic_string_view<C>) const -> Out {
return out;
}
};
@ -2774,7 +2775,7 @@ FMT_CONSTEXPR20 auto write_float(OutputIt out, const DecimalFP& f,
}
}
template <typename T> constexpr bool isnan(T value) {
template <typename T> constexpr auto isnan(T value) -> bool {
return !(value >= value); // std::isnan doesn't support __float128.
}
@ -2787,14 +2788,14 @@ struct has_isfinite<T, enable_if_t<sizeof(std::isfinite(T())) != 0>>
template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value&&
has_isfinite<T>::value)>
FMT_CONSTEXPR20 bool isfinite(T value) {
FMT_CONSTEXPR20 auto isfinite(T value) -> bool {
constexpr T inf = T(std::numeric_limits<double>::infinity());
if (is_constant_evaluated())
return !detail::isnan(value) && value < inf && value > -inf;
return std::isfinite(value);
}
template <typename T, FMT_ENABLE_IF(!has_isfinite<T>::value)>
FMT_CONSTEXPR bool isfinite(T value) {
FMT_CONSTEXPR auto isfinite(T value) -> bool {
T inf = T(std::numeric_limits<double>::infinity());
// std::isfinite doesn't support __float128.
return !detail::isnan(value) && value < inf && value > -inf;
@ -2831,10 +2832,10 @@ class bigint {
basic_memory_buffer<bigit, bigits_capacity> bigits_;
int exp_;
FMT_CONSTEXPR20 bigit operator[](int index) const {
FMT_CONSTEXPR20 auto operator[](int index) const -> bigit {
return bigits_[to_unsigned(index)];
}
FMT_CONSTEXPR20 bigit& operator[](int index) {
FMT_CONSTEXPR20 auto operator[](int index) -> bigit& {
return bigits_[to_unsigned(index)];
}
@ -2930,11 +2931,11 @@ class bigint {
assign(uint64_or_128_t<Int>(n));
}
FMT_CONSTEXPR20 int num_bigits() const {
FMT_CONSTEXPR20 auto num_bigits() const -> int {
return static_cast<int>(bigits_.size()) + exp_;
}
FMT_NOINLINE FMT_CONSTEXPR20 bigint& operator<<=(int shift) {
FMT_NOINLINE FMT_CONSTEXPR20 auto operator<<=(int shift) -> bigint& {
FMT_ASSERT(shift >= 0, "");
exp_ += shift / bigit_bits;
shift %= bigit_bits;
@ -2949,13 +2950,15 @@ class bigint {
return *this;
}
template <typename Int> FMT_CONSTEXPR20 bigint& operator*=(Int value) {
template <typename Int>
FMT_CONSTEXPR20 auto operator*=(Int value) -> bigint& {
FMT_ASSERT(value > 0, "");
multiply(uint32_or_64_or_128_t<Int>(value));
return *this;
}
friend FMT_CONSTEXPR20 int compare(const bigint& lhs, const bigint& rhs) {
friend FMT_CONSTEXPR20 auto compare(const bigint& lhs, const bigint& rhs)
-> int {
int num_lhs_bigits = lhs.num_bigits(), num_rhs_bigits = rhs.num_bigits();
if (num_lhs_bigits != num_rhs_bigits)
return num_lhs_bigits > num_rhs_bigits ? 1 : -1;
@ -2972,8 +2975,9 @@ class bigint {
}
// Returns compare(lhs1 + lhs2, rhs).
friend FMT_CONSTEXPR20 int add_compare(const bigint& lhs1, const bigint& lhs2,
const bigint& rhs) {
friend FMT_CONSTEXPR20 auto add_compare(const bigint& lhs1,
const bigint& lhs2, const bigint& rhs)
-> int {
auto minimum = [](int a, int b) { return a < b ? a : b; };
auto maximum = [](int a, int b) { return a > b ? a : b; };
int max_lhs_bigits = maximum(lhs1.num_bigits(), lhs2.num_bigits());
@ -3060,7 +3064,7 @@ class bigint {
// Divides this bignum by divisor, assigning the remainder to this and
// returning the quotient.
FMT_CONSTEXPR20 int divmod_assign(const bigint& divisor) {
FMT_CONSTEXPR20 auto divmod_assign(const bigint& divisor) -> int {
FMT_ASSERT(this != &divisor, "");
if (compare(*this, divisor) < 0) return 0;
FMT_ASSERT(divisor.bigits_[divisor.bigits_.size() - 1u] != 0, "");
@ -3303,7 +3307,7 @@ FMT_CONSTEXPR20 void format_hexfloat(Float value, int precision,
format_hexfloat(static_cast<double>(value), precision, specs, buf);
}
constexpr uint32_t fractional_part_rounding_thresholds(int index) {
constexpr auto fractional_part_rounding_thresholds(int index) -> uint32_t {
// For checking rounding thresholds.
// The kth entry is chosen to be the smallest integer such that the
// upper 32-bits of 10^(k+1) times it is strictly bigger than 5 * 10^k.

32
include/fmt/os.h
View File

@ -117,7 +117,7 @@ template <typename Char> class basic_cstring_view {
basic_cstring_view(const std::basic_string<Char>& s) : data_(s.c_str()) {}
/** Returns the pointer to a C string. */
const Char* c_str() const { return data_; }
auto c_str() const -> const Char* { return data_; }
};
using cstring_view = basic_cstring_view<char>;
@ -172,7 +172,7 @@ std::system_error windows_error(int error_code, string_view message,
// Can be used to report errors from destructors.
FMT_API void report_windows_error(int error_code, const char* message) noexcept;
#else
inline const std::error_category& system_category() noexcept {
inline auto system_category() noexcept -> const std::error_category& {
return std::system_category();
}
#endif // _WIN32
@ -209,7 +209,7 @@ class buffered_file {
other.file_ = nullptr;
}
buffered_file& operator=(buffered_file&& other) {
auto operator=(buffered_file&& other) -> buffered_file& {
close();
file_ = other.file_;
other.file_ = nullptr;
@ -223,9 +223,9 @@ class buffered_file {
FMT_API void close();
// Returns the pointer to a FILE object representing this file.
FILE* get() const noexcept { return file_; }
auto get() const noexcept -> FILE* { return file_; }
FMT_API int descriptor() const;
FMT_API auto descriptor() const -> int;
void vprint(string_view format_str, format_args args) {
fmt::vprint(file_, format_str, args);
@ -275,7 +275,7 @@ class FMT_API file {
file(file&& other) noexcept : fd_(other.fd_) { other.fd_ = -1; }
// Move assignment is not noexcept because close may throw.
file& operator=(file&& other) {
auto operator=(file&& other) -> file& {
close();
fd_ = other.fd_;
other.fd_ = -1;
@ -286,24 +286,24 @@ class FMT_API file {
~file() noexcept;
// Returns the file descriptor.
int descriptor() const noexcept { return fd_; }
auto descriptor() const noexcept -> int { return fd_; }
// Closes the file.
void close();
// Returns the file size. The size has signed type for consistency with
// stat::st_size.
long long size() const;
auto size() const -> long long;
// Attempts to read count bytes from the file into the specified buffer.
size_t read(void* buffer, size_t count);
auto read(void* buffer, size_t count) -> size_t;
// Attempts to write count bytes from the specified buffer to the file.
size_t write(const void* buffer, size_t count);
auto write(const void* buffer, size_t count) -> size_t;
// Duplicates a file descriptor with the dup function and returns
// the duplicate as a file object.
static file dup(int fd);
static auto dup(int fd) -> file;
// Makes fd be the copy of this file descriptor, closing fd first if
// necessary.
@ -319,7 +319,7 @@ class FMT_API file {
// Creates a buffered_file object associated with this file and detaches
// this file object from the file.
buffered_file fdopen(const char* mode);
auto fdopen(const char* mode) -> buffered_file;
# if defined(_WIN32) && !defined(__MINGW32__)
// Opens a file and constructs a file object representing this file by
@ -329,14 +329,14 @@ class FMT_API file {
};
// Returns the memory page size.
long getpagesize();
auto getpagesize() -> long;
namespace detail {
struct buffer_size {
buffer_size() = default;
size_t value = 0;
buffer_size operator=(size_t val) const {
auto operator=(size_t val) const -> buffer_size {
auto bs = buffer_size();
bs.value = val;
return bs;
@ -413,7 +413,7 @@ class FMT_API ostream {
void flush() { buffer_.flush(); }
template <typename... T>
friend ostream output_file(cstring_view path, T... params);
friend auto output_file(cstring_view path, T... params) -> ostream;
void close() { buffer_.close(); }
@ -443,7 +443,7 @@ class FMT_API ostream {
\endrst
*/
template <typename... T>
inline ostream output_file(cstring_view path, T... params) {
inline auto output_file(cstring_view path, T... params) -> ostream {
return {path, detail::ostream_params(params...)};
}
#endif // FMT_USE_FCNTL

7
include/fmt/ostream.h
View File

@ -40,7 +40,8 @@ template class file_access<file_access_tag, std::filebuf,
auto get_file(std::filebuf&) -> FILE*;
#endif
inline bool write_ostream_unicode(std::ostream& os, fmt::string_view data) {
inline auto write_ostream_unicode(std::ostream& os, fmt::string_view data)
-> bool {
FILE* f = nullptr;
#if FMT_MSC_VERSION
if (auto* buf = dynamic_cast<std::filebuf*>(os.rdbuf()))
@ -69,8 +70,8 @@ inline bool write_ostream_unicode(std::ostream& os, fmt::string_view data) {
#endif
return false;
}
inline bool write_ostream_unicode(std::wostream&,
fmt::basic_string_view<wchar_t>) {
inline auto write_ostream_unicode(std::wostream&,
fmt::basic_string_view<wchar_t>) -> bool {
return false;
}

16
include/fmt/ranges.h
View File

@ -183,7 +183,7 @@ template <size_t N> using make_index_sequence = std::make_index_sequence<N>;
template <typename T, T... N> struct integer_sequence {
using value_type = T;
static FMT_CONSTEXPR size_t size() { return sizeof...(N); }
static FMT_CONSTEXPR auto size() -> size_t { return sizeof...(N); }
};
template <size_t... N> using index_sequence = integer_sequence<size_t, N...>;
@ -207,15 +207,15 @@ class is_tuple_formattable_ {
};
template <typename T, typename C> class is_tuple_formattable_<T, C, true> {
template <std::size_t... Is>
static std::true_type check2(index_sequence<Is...>,
integer_sequence<bool, (Is == Is)...>);
static std::false_type check2(...);
static auto check2(index_sequence<Is...>,
integer_sequence<bool, (Is == Is)...>) -> std::true_type;
static auto check2(...) -> std::false_type;
template <std::size_t... Is>
static decltype(check2(
static auto check(index_sequence<Is...>) -> decltype(check2(
index_sequence<Is...>{},
integer_sequence<
bool, (is_formattable<typename std::tuple_element<Is, T>::type,
C>::value)...>{})) check(index_sequence<Is...>);
integer_sequence<bool,
(is_formattable<typename std::tuple_element<Is, T>::type,
C>::value)...>{}));
public:
static constexpr const bool value =

2
include/fmt/std.h
View File

@ -176,7 +176,7 @@ struct formatter<std::bitset<N>, Char> : nested_formatter<string_view> {
const std::bitset<N>& bs;
template <typename OutputIt>
FMT_CONSTEXPR OutputIt operator()(OutputIt out) {
FMT_CONSTEXPR auto operator()(OutputIt out) -> OutputIt {
for (auto pos = N; pos > 0; --pos) {
out = detail::write<Char>(out, bs[pos - 1] ? Char('1') : Char('0'));
}

7
include/fmt/xchar.h
View File

@ -63,14 +63,15 @@ template <> struct is_char<char16_t> : std::true_type {};
template <> struct is_char<char32_t> : std::true_type {};
template <typename... T>
constexpr format_arg_store<wformat_context, T...> make_wformat_args(
const T&... args) {
constexpr auto make_wformat_args(const T&... args)
-> format_arg_store<wformat_context, T...> {
return {args...};
}
inline namespace literals {
#if FMT_USE_USER_DEFINED_LITERALS && !FMT_USE_NONTYPE_TEMPLATE_ARGS
constexpr detail::udl_arg<wchar_t> operator""_a(const wchar_t* s, size_t) {
constexpr auto operator""_a(const wchar_t* s, size_t)
-> detail::udl_arg<wchar_t> {
return {s};
}
#endif