#ifndef FMT_CHRONO_H_
#define FMT_CHRONO_H_
+#include <algorithm>
#include <chrono>
#include <ctime>
#include <locale>
#include <sstream>
#include "format.h"
-#include "locale.h"
FMT_BEGIN_NAMESPACE
#define FMT_NOMACRO
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 do_write(const std::tm& time, const std::locale& loc, char format,
+ char modifier) -> std::string {
+ auto&& os = std::ostringstream();
+ os.imbue(loc);
+ using iterator = std::ostreambuf_iterator<char>;
+ const auto& facet = std::use_facet<std::time_put<char, iterator>>(loc);
+ auto end = facet.put(os, os, ' ', &time, format, modifier);
+ if (end.failed()) FMT_THROW(format_error("failed to format time"));
+ auto str = os.str();
+ if (!detail::is_utf8() || loc == std::locale::classic()) return str;
+ // char16_t and char32_t codecvts are broken in MSVC (linkage errors) and
+ // gcc-4.
+#if FMT_MSC_VER != 0 || \
+ (defined(__GLIBCXX__) && !defined(_GLIBCXX_USE_DUAL_ABI))
+ // The _GLIBCXX_USE_DUAL_ABI macro is always defined in libstdc++ from gcc-5
+ // and newer.
+ using code_unit = wchar_t;
+#else
+ using code_unit = char32_t;
+#endif
+ auto& f = std::use_facet<std::codecvt<code_unit, char, std::mbstate_t>>(loc);
+ auto mb = std::mbstate_t();
+ const char* from_next = nullptr;
+ code_unit* to_next = nullptr;
+ constexpr size_t buf_size = 32;
+ code_unit buf[buf_size] = {};
+ auto result = f.in(mb, str.data(), str.data() + str.size(), from_next, buf,
+ buf + buf_size, to_next);
+ if (result != std::codecvt_base::ok)
+ FMT_THROW(format_error("failed to format time"));
+ str.clear();
+ for (code_unit* p = buf; p != to_next; ++p) {
+ uint32_t c = static_cast<uint32_t>(*p);
+ if (sizeof(code_unit) == 2 && c >= 0xd800 && c <= 0xdfff) {
+ // surrogate pair
+ ++p;
+ if (p == to_next || (c & 0xfc00) != 0xd800 || (*p & 0xfc00) != 0xdc00) {
+ FMT_THROW(format_error("failed to format time"));
+ }
+ c = (c << 10) + static_cast<uint32_t>(*p) - 0x35fdc00;
+ }
+ if (c < 0x80) {
+ str.push_back(static_cast<char>(c));
+ } else if (c < 0x800) {
+ str.push_back(static_cast<char>(0xc0 | (c >> 6)));
+ str.push_back(static_cast<char>(0x80 | (c & 0x3f)));
+ } else if ((c >= 0x800 && c <= 0xd7ff) || (c >= 0xe000 && c <= 0xffff)) {
+ str.push_back(static_cast<char>(0xe0 | (c >> 12)));
+ str.push_back(static_cast<char>(0x80 | ((c & 0xfff) >> 6)));
+ str.push_back(static_cast<char>(0x80 | (c & 0x3f)));
+ } else if (c >= 0x10000 && c <= 0x10ffff) {
+ str.push_back(static_cast<char>(0xf0 | (c >> 18)));
+ str.push_back(static_cast<char>(0x80 | ((c & 0x3ffff) >> 12)));
+ str.push_back(static_cast<char>(0x80 | ((c & 0xfff) >> 6)));
+ str.push_back(static_cast<char>(0x80 | (c & 0x3f)));
+ } else {
+ FMT_THROW(format_error("failed to format time"));
+ }
+ }
+ return str;
+}
+
+template <typename OutputIt>
+auto write(OutputIt out, const std::tm& time, const std::locale& loc,
+ char format, char modifier = 0) -> OutputIt {
+ auto str = do_write(time, loc, format, modifier);
+ return std::copy(str.begin(), str.end(), out);
+}
} // namespace detail
-// Thread-safe replacement for std::localtime
+FMT_MODULE_EXPORT_BEGIN
+
+/**
+ Converts given time since epoch as ``std::time_t`` value into calendar time,
+ expressed in local time. Unlike ``std::localtime``, this function is
+ thread-safe on most platforms.
+ */
inline std::tm localtime(std::time_t time) {
struct dispatcher {
std::time_t time_;
return localtime(std::chrono::system_clock::to_time_t(time_point));
}
-// Thread-safe replacement for std::gmtime
+/**
+ Converts given time since epoch as ``std::time_t`` value into calendar time,
+ 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) {
struct dispatcher {
std::time_t time_;
return gmtime(std::chrono::system_clock::to_time_t(time_point));
}
-namespace detail {
+FMT_BEGIN_DETAIL_NAMESPACE
+
inline size_t strftime(char* str, size_t count, const char* format,
const std::tm* time) {
- return std::strftime(str, count, format, time);
+ // Assign to a pointer to suppress GCCs -Wformat-nonliteral
+ // First assign the nullptr to suppress -Wsuggest-attribute=format
+ std::size_t (*strftime)(char*, std::size_t, const char*, const std::tm*) =
+ nullptr;
+ strftime = std::strftime;
+ return strftime(str, count, format, time);
}
inline size_t strftime(wchar_t* str, size_t count, const wchar_t* format,
const std::tm* time) {
- return std::wcsftime(str, count, format, time);
+ // See above
+ std::size_t (*wcsftime)(wchar_t*, std::size_t, const wchar_t*,
+ const std::tm*) = nullptr;
+ wcsftime = std::wcsftime;
+ return wcsftime(str, count, format, time);
}
-} // namespace detail
-template <typename Char>
-struct formatter<std::chrono::time_point<std::chrono::system_clock>, Char>
- : formatter<std::tm, Char> {
+FMT_END_DETAIL_NAMESPACE
+
+template <typename Char, typename Duration>
+struct formatter<std::chrono::time_point<std::chrono::system_clock, Duration>,
+ Char> : formatter<std::tm, Char> {
+ FMT_CONSTEXPR formatter() {
+ this->specs = {default_specs, sizeof(default_specs) / sizeof(Char)};
+ }
+
+ template <typename ParseContext>
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+ auto it = ctx.begin();
+ if (it != ctx.end() && *it == ':') ++it;
+ auto end = it;
+ while (end != ctx.end() && *end != '}') ++end;
+ if (end != it) this->specs = {it, detail::to_unsigned(end - it)};
+ return end;
+ }
+
template <typename FormatContext>
auto format(std::chrono::time_point<std::chrono::system_clock> val,
FormatContext& ctx) -> decltype(ctx.out()) {
std::tm time = localtime(val);
return formatter<std::tm, Char>::format(time, ctx);
}
+
+ static constexpr Char default_specs[] = {'%', 'Y', '-', '%', 'm', '-',
+ '%', 'd', ' ', '%', 'H', ':',
+ '%', 'M', ':', '%', 'S'};
};
+template <typename Char, typename Duration>
+constexpr Char
+ formatter<std::chrono::time_point<std::chrono::system_clock, Duration>,
+ Char>::default_specs[];
+
template <typename Char> struct formatter<std::tm, Char> {
template <typename ParseContext>
- auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
auto it = ctx.begin();
if (it != ctx.end() && *it == ':') ++it;
auto end = it;
while (end != ctx.end() && *end != '}') ++end;
- tm_format.reserve(detail::to_unsigned(end - it + 1));
- tm_format.append(it, end);
- tm_format.push_back('\0');
+ specs = {it, detail::to_unsigned(end - it)};
return end;
}
template <typename FormatContext>
- auto format(const std::tm& tm, FormatContext& ctx) -> decltype(ctx.out()) {
+ auto format(const std::tm& tm, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ basic_memory_buffer<Char> tm_format;
+ tm_format.append(specs.begin(), specs.end());
+ // By appending an extra space we can distinguish an empty result that
+ // indicates insufficient buffer size from a guaranteed non-empty result
+ // https://github.com/fmtlib/fmt/issues/2238
+ tm_format.push_back(' ');
+ tm_format.push_back('\0');
basic_memory_buffer<Char> buf;
size_t start = buf.size();
for (;;) {
buf.resize(start + count);
break;
}
- if (size >= tm_format.size() * 256) {
- // If the buffer is 256 times larger than the format string, assume
- // that `strftime` gives an empty result. There doesn't seem to be a
- // better way to distinguish the two cases:
- // https://github.com/fmtlib/fmt/issues/367
- break;
- }
const size_t MIN_GROWTH = 10;
buf.reserve(buf.capacity() + (size > MIN_GROWTH ? size : MIN_GROWTH));
}
- return std::copy(buf.begin(), buf.end(), ctx.out());
+ // Remove the extra space.
+ return std::copy(buf.begin(), buf.end() - 1, ctx.out());
}
- basic_memory_buffer<Char> tm_format;
+ basic_string_view<Char> specs;
};
-namespace detail {
-template <typename Period> FMT_CONSTEXPR const char* get_units() {
+FMT_BEGIN_DETAIL_NAMESPACE
+
+template <typename Period> FMT_CONSTEXPR inline const char* get_units() {
+ 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";
+ if (std::is_same<Period, std::nano>::value) return "ns";
+ if (std::is_same<Period, std::micro>::value) return "µs";
+ if (std::is_same<Period, std::milli>::value) return "ms";
+ if (std::is_same<Period, std::centi>::value) return "cs";
+ if (std::is_same<Period, std::deci>::value) return "ds";
+ if (std::is_same<Period, std::ratio<1>>::value) return "s";
+ if (std::is_same<Period, std::deca>::value) return "das";
+ if (std::is_same<Period, std::hecto>::value) return "hs";
+ if (std::is_same<Period, std::kilo>::value) return "ks";
+ if (std::is_same<Period, std::mega>::value) return "Ms";
+ if (std::is_same<Period, std::giga>::value) return "Gs";
+ if (std::is_same<Period, std::tera>::value) return "Ts";
+ if (std::is_same<Period, std::peta>::value) return "Ps";
+ if (std::is_same<Period, std::exa>::value) return "Es";
+ if (std::is_same<Period, std::ratio<60>>::value) return "m";
+ if (std::is_same<Period, std::ratio<3600>>::value) return "h";
return nullptr;
}
-template <> FMT_CONSTEXPR const char* get_units<std::atto>() { return "as"; }
-template <> FMT_CONSTEXPR const char* get_units<std::femto>() { return "fs"; }
-template <> FMT_CONSTEXPR const char* get_units<std::pico>() { return "ps"; }
-template <> FMT_CONSTEXPR const char* get_units<std::nano>() { return "ns"; }
-template <> FMT_CONSTEXPR const char* get_units<std::micro>() { return "µs"; }
-template <> FMT_CONSTEXPR const char* get_units<std::milli>() { return "ms"; }
-template <> FMT_CONSTEXPR const char* get_units<std::centi>() { return "cs"; }
-template <> FMT_CONSTEXPR const char* get_units<std::deci>() { return "ds"; }
-template <> FMT_CONSTEXPR const char* get_units<std::ratio<1>>() { return "s"; }
-template <> FMT_CONSTEXPR const char* get_units<std::deca>() { return "das"; }
-template <> FMT_CONSTEXPR const char* get_units<std::hecto>() { return "hs"; }
-template <> FMT_CONSTEXPR const char* get_units<std::kilo>() { return "ks"; }
-template <> FMT_CONSTEXPR const char* get_units<std::mega>() { return "Ms"; }
-template <> FMT_CONSTEXPR const char* get_units<std::giga>() { return "Gs"; }
-template <> FMT_CONSTEXPR const char* get_units<std::tera>() { return "Ts"; }
-template <> FMT_CONSTEXPR const char* get_units<std::peta>() { return "Ps"; }
-template <> FMT_CONSTEXPR const char* get_units<std::exa>() { return "Es"; }
-template <> FMT_CONSTEXPR const char* get_units<std::ratio<60>>() {
- return "m";
-}
-template <> FMT_CONSTEXPR const char* get_units<std::ratio<3600>>() {
- return "h";
-}
enum class numeric_system {
standard,
return ptr;
}
-struct chrono_format_checker {
- FMT_NORETURN void report_no_date() { FMT_THROW(format_error("no date")); }
-
- template <typename Char> void on_text(const Char*, const Char*) {}
- FMT_NORETURN void on_abbr_weekday() { report_no_date(); }
- FMT_NORETURN void on_full_weekday() { report_no_date(); }
- FMT_NORETURN void on_dec0_weekday(numeric_system) { report_no_date(); }
- FMT_NORETURN void on_dec1_weekday(numeric_system) { report_no_date(); }
- FMT_NORETURN void on_abbr_month() { report_no_date(); }
- FMT_NORETURN void on_full_month() { report_no_date(); }
- void on_24_hour(numeric_system) {}
- void on_12_hour(numeric_system) {}
- void on_minute(numeric_system) {}
- void on_second(numeric_system) {}
- FMT_NORETURN void on_datetime(numeric_system) { report_no_date(); }
- FMT_NORETURN void on_loc_date(numeric_system) { report_no_date(); }
- FMT_NORETURN void on_loc_time(numeric_system) { report_no_date(); }
- FMT_NORETURN void on_us_date() { report_no_date(); }
- FMT_NORETURN void on_iso_date() { report_no_date(); }
- void on_12_hour_time() {}
- void on_24_hour_time() {}
- void on_iso_time() {}
- void on_am_pm() {}
- void on_duration_value() {}
- void on_duration_unit() {}
- FMT_NORETURN void on_utc_offset() { report_no_date(); }
- FMT_NORETURN void on_tz_name() { report_no_date(); }
+template <typename Derived> struct null_chrono_spec_handler {
+ FMT_CONSTEXPR void unsupported() {
+ static_cast<Derived*>(this)->unsupported();
+ }
+ FMT_CONSTEXPR void on_abbr_weekday() { unsupported(); }
+ FMT_CONSTEXPR void on_full_weekday() { unsupported(); }
+ FMT_CONSTEXPR void on_dec0_weekday(numeric_system) { unsupported(); }
+ FMT_CONSTEXPR void on_dec1_weekday(numeric_system) { unsupported(); }
+ FMT_CONSTEXPR void on_abbr_month() { unsupported(); }
+ FMT_CONSTEXPR void on_full_month() { unsupported(); }
+ FMT_CONSTEXPR void on_24_hour(numeric_system) { unsupported(); }
+ FMT_CONSTEXPR void on_12_hour(numeric_system) { unsupported(); }
+ FMT_CONSTEXPR void on_minute(numeric_system) { unsupported(); }
+ FMT_CONSTEXPR void on_second(numeric_system) { unsupported(); }
+ FMT_CONSTEXPR void on_datetime(numeric_system) { unsupported(); }
+ FMT_CONSTEXPR void on_loc_date(numeric_system) { unsupported(); }
+ FMT_CONSTEXPR void on_loc_time(numeric_system) { unsupported(); }
+ FMT_CONSTEXPR void on_us_date() { unsupported(); }
+ FMT_CONSTEXPR void on_iso_date() { unsupported(); }
+ FMT_CONSTEXPR void on_12_hour_time() { unsupported(); }
+ FMT_CONSTEXPR void on_24_hour_time() { unsupported(); }
+ FMT_CONSTEXPR void on_iso_time() { unsupported(); }
+ FMT_CONSTEXPR void on_am_pm() { unsupported(); }
+ FMT_CONSTEXPR void on_duration_value() { unsupported(); }
+ FMT_CONSTEXPR void on_duration_unit() { unsupported(); }
+ FMT_CONSTEXPR void on_utc_offset() { unsupported(); }
+ FMT_CONSTEXPR void on_tz_name() { unsupported(); }
+};
+
+struct chrono_format_checker : null_chrono_spec_handler<chrono_format_checker> {
+ FMT_NORETURN void unsupported() { FMT_THROW(format_error("no date")); }
+
+ template <typename Char>
+ FMT_CONSTEXPR void on_text(const Char*, const Char*) {}
+ FMT_CONSTEXPR void on_24_hour(numeric_system) {}
+ FMT_CONSTEXPR void on_12_hour(numeric_system) {}
+ FMT_CONSTEXPR void on_minute(numeric_system) {}
+ FMT_CONSTEXPR void on_second(numeric_system) {}
+ FMT_CONSTEXPR void on_12_hour_time() {}
+ FMT_CONSTEXPR void on_24_hour_time() {}
+ FMT_CONSTEXPR void on_iso_time() {}
+ FMT_CONSTEXPR void on_am_pm() {}
+ FMT_CONSTEXPR void on_duration_value() {}
+ FMT_CONSTEXPR void on_duration_unit() {}
};
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
// Converts value to int and checks that it's in the range [0, upper).
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
inline int to_nonnegative_int(T value, int upper) {
- FMT_ASSERT(value >= 0 && value <= upper, "invalid value");
+ FMT_ASSERT(value >= 0 && to_unsigned(value) <= to_unsigned(upper),
+ "invalid value");
(void)upper;
return static_cast<int>(value);
}
return std::chrono::duration<Rep, std::milli>(static_cast<Rep>(ms));
}
-template <typename Char, typename Rep, typename OutputIt>
+template <typename Char, typename Rep, typename OutputIt,
+ FMT_ENABLE_IF(std::is_integral<Rep>::value)>
+OutputIt format_duration_value(OutputIt out, Rep val, int) {
+ 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) {
- const Char pr_f[] = {'{', ':', '.', '{', '}', 'f', '}', 0};
- if (precision >= 0) return format_to(out, pr_f, val, precision);
- const Char fp_f[] = {'{', ':', 'g', '}', 0};
- const Char format[] = {'{', '}', 0};
- return format_to(out, std::is_floating_point<Rep>::value ? fp_f : format,
- val);
+ auto specs = basic_format_specs<Char>();
+ specs.precision = precision;
+ specs.type = precision > 0 ? 'f' : 'g';
+ return write<Char>(out, val, specs);
}
+
template <typename Char, typename OutputIt>
OutputIt copy_unit(string_view unit, OutputIt out, Char) {
return std::copy(unit.begin(), unit.end(), out);
OutputIt format_duration_unit(OutputIt out) {
if (const char* unit = get_units<Period>())
return copy_unit(string_view(unit), out, Char());
- const Char num_f[] = {'[', '{', '}', ']', 's', 0};
- if (const_check(Period::den == 1)) return format_to(out, num_f, Period::num);
- const Char num_def_f[] = {'[', '{', '}', '/', '{', '}', ']', 's', 0};
- return format_to(out, num_def_f, Period::num, Period::den);
+ *out++ = '[';
+ out = write<Char>(out, Period::num);
+ if (const_check(Period::den != 1)) {
+ *out++ = '/';
+ out = write<Char>(out, Period::den);
+ }
+ *out++ = ']';
+ *out++ = 's';
+ return out;
}
template <typename FormatContext, typename OutputIt, typename Rep,
FormatContext& context;
OutputIt out;
int precision;
+ bool localized = false;
// rep is unsigned to avoid overflow.
using rep =
conditional_t<std::is_integral<Rep>::value && sizeof(Rep) < sizeof(int),
void format_localized(const tm& time, char format, char modifier = 0) {
if (isnan(val)) return write_nan();
- auto locale = context.locale().template get<std::locale>();
- auto& facet = std::use_facet<std::time_put<char_type>>(locale);
- std::basic_ostringstream<char_type> os;
- os.imbue(locale);
- facet.put(os, os, ' ', &time, format, modifier);
- auto str = os.str();
- std::copy(str.begin(), str.end(), out);
+ const auto& loc = localized ? context.locale().template get<std::locale>()
+ : std::locale::classic();
+ out = detail::write(out, time, loc, format, modifier);
}
void on_text(const char_type* begin, const char_type* end) {
out = format_duration_unit<char_type, Period>(out);
}
};
-} // namespace detail
+
+FMT_END_DETAIL_NAMESPACE
+
+#if defined(__cpp_lib_chrono) && __cpp_lib_chrono >= 201907
+using weekday = std::chrono::weekday;
+#else
+// A fallback version of weekday.
+class weekday {
+ private:
+ unsigned char value;
+
+ public:
+ 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; }
+};
+#endif
+
+// A rudimentary weekday formatter.
+template <> struct formatter<weekday> {
+ private:
+ bool localized = false;
+
+ public:
+ FMT_CONSTEXPR auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) {
+ auto begin = ctx.begin(), end = ctx.end();
+ if (begin != end && *begin == 'L') {
+ ++begin;
+ localized = true;
+ }
+ return begin;
+ }
+
+ auto format(weekday wd, format_context& ctx) -> decltype(ctx.out()) {
+ auto time = std::tm();
+ time.tm_wday = static_cast<int>(wd.c_encoding());
+ const auto& loc = localized ? ctx.locale().template get<std::locale>()
+ : std::locale::classic();
+ return detail::write(ctx.out(), time, loc, 'a');
+ }
+};
template <typename Rep, typename Period, typename Char>
struct formatter<std::chrono::duration<Rep, Period>, Char> {
private:
basic_format_specs<Char> specs;
- int precision;
+ int precision = -1;
using arg_ref_type = detail::arg_ref<Char>;
arg_ref_type width_ref;
arg_ref_type precision_ref;
- mutable basic_string_view<Char> format_str;
+ bool localized = false;
+ basic_string_view<Char> format_str;
using duration = std::chrono::duration<Rep, Period>;
struct spec_handler {
}
void on_error(const char* msg) { FMT_THROW(format_error(msg)); }
- void on_fill(basic_string_view<Char> fill) { f.specs.fill = fill; }
- void on_align(align_t align) { f.specs.align = align; }
- void on_width(int width) { f.specs.width = width; }
- void on_precision(int _precision) { f.precision = _precision; }
- void end_precision() {}
+ FMT_CONSTEXPR void on_fill(basic_string_view<Char> fill) {
+ f.specs.fill = fill;
+ }
+ FMT_CONSTEXPR void on_align(align_t align) { f.specs.align = align; }
+ FMT_CONSTEXPR void on_width(int width) { f.specs.width = width; }
+ FMT_CONSTEXPR void on_precision(int _precision) {
+ f.precision = _precision;
+ }
+ FMT_CONSTEXPR void end_precision() {}
- template <typename Id> void on_dynamic_width(Id arg_id) {
+ template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) {
f.width_ref = make_arg_ref(arg_id);
}
- template <typename Id> void on_dynamic_precision(Id arg_id) {
+ template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) {
f.precision_ref = make_arg_ref(arg_id);
}
};
else
handler.on_error("precision not allowed for this argument type");
}
+ if (begin != end && *begin == 'L') {
+ ++begin;
+ localized = true;
+ }
end = parse_chrono_format(begin, end, detail::chrono_format_checker());
return {begin, end};
}
public:
- formatter() : precision(-1) {}
-
FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
-> decltype(ctx.begin()) {
auto range = do_parse(ctx);
}
template <typename FormatContext>
- auto format(const duration& d, FormatContext& ctx) -> decltype(ctx.out()) {
+ auto format(const duration& d, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ auto specs_copy = specs;
+ auto precision_copy = precision;
auto begin = format_str.begin(), end = format_str.end();
// As a possible future optimization, we could avoid extra copying if width
// is not specified.
basic_memory_buffer<Char> buf;
auto out = std::back_inserter(buf);
- detail::handle_dynamic_spec<detail::width_checker>(specs.width, width_ref,
- ctx);
- detail::handle_dynamic_spec<detail::precision_checker>(precision,
+ detail::handle_dynamic_spec<detail::width_checker>(specs_copy.width,
+ width_ref, ctx);
+ detail::handle_dynamic_spec<detail::precision_checker>(precision_copy,
precision_ref, ctx);
if (begin == end || *begin == '}') {
- out = detail::format_duration_value<Char>(out, d.count(), precision);
+ out = detail::format_duration_value<Char>(out, d.count(), precision_copy);
detail::format_duration_unit<Char, Period>(out);
} else {
detail::chrono_formatter<FormatContext, decltype(out), Rep, Period> f(
ctx, out, d);
- f.precision = precision;
- parse_chrono_format(begin, end, f);
+ f.precision = precision_copy;
+ f.localized = localized;
+ detail::parse_chrono_format(begin, end, f);
}
return detail::write(
- ctx.out(), basic_string_view<Char>(buf.data(), buf.size()), specs);
+ ctx.out(), basic_string_view<Char>(buf.data(), buf.size()), specs_copy);
}
};
+FMT_MODULE_EXPORT_END
FMT_END_NAMESPACE
#endif // FMT_CHRONO_H_
#include "format.h"
+// __declspec(deprecated) is broken in some MSVC versions.
+#if FMT_MSC_VER
+# define FMT_DEPRECATED_NONMSVC
+#else
+# define FMT_DEPRECATED_NONMSVC FMT_DEPRECATED
+#endif
+
FMT_BEGIN_NAMESPACE
+FMT_MODULE_EXPORT_BEGIN
enum class color : uint32_t {
alice_blue = 0xF0F8FF, // rgb(240,248,255)
uint8_t b;
};
-namespace detail {
+FMT_BEGIN_DETAIL_NAMESPACE
// color is a struct of either a rgb color or a terminal color.
struct color_type {
uint32_t rgb_color;
} value;
};
-} // namespace detail
-// Experimental text formatting support.
+FMT_END_DETAIL_NAMESPACE
+
+/** A text style consisting of foreground and background colors and emphasis. */
class text_style {
public:
FMT_CONSTEXPR text_style(emphasis em = emphasis()) FMT_NOEXCEPT
return lhs |= rhs;
}
- FMT_CONSTEXPR text_style& operator&=(const text_style& rhs) {
- if (!set_foreground_color) {
- set_foreground_color = rhs.set_foreground_color;
- foreground_color = rhs.foreground_color;
- } else if (rhs.set_foreground_color) {
- if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb)
- FMT_THROW(format_error("can't AND a terminal color"));
- foreground_color.value.rgb_color &= rhs.foreground_color.value.rgb_color;
- }
-
- if (!set_background_color) {
- set_background_color = rhs.set_background_color;
- background_color = rhs.background_color;
- } else if (rhs.set_background_color) {
- if (!background_color.is_rgb || !rhs.background_color.is_rgb)
- FMT_THROW(format_error("can't AND a terminal color"));
- background_color.value.rgb_color &= rhs.background_color.value.rgb_color;
- }
-
- ems = static_cast<emphasis>(static_cast<uint8_t>(ems) &
- static_cast<uint8_t>(rhs.ems));
- return *this;
+ FMT_DEPRECATED_NONMSVC FMT_CONSTEXPR text_style& operator&=(
+ const text_style& rhs) {
+ return and_assign(rhs);
}
- friend FMT_CONSTEXPR text_style operator&(text_style lhs,
- const text_style& rhs) {
- return lhs &= rhs;
+ FMT_DEPRECATED_NONMSVC friend FMT_CONSTEXPR text_style
+ operator&(text_style lhs, const text_style& rhs) {
+ return lhs.and_assign(rhs);
}
FMT_CONSTEXPR bool has_foreground() const FMT_NOEXCEPT {
}
}
+ // DEPRECATED!
+ FMT_CONSTEXPR text_style& and_assign(const text_style& rhs) {
+ if (!set_foreground_color) {
+ set_foreground_color = rhs.set_foreground_color;
+ foreground_color = rhs.foreground_color;
+ } else if (rhs.set_foreground_color) {
+ if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb)
+ FMT_THROW(format_error("can't AND a terminal color"));
+ foreground_color.value.rgb_color &= rhs.foreground_color.value.rgb_color;
+ }
+
+ if (!set_background_color) {
+ set_background_color = rhs.set_background_color;
+ background_color = rhs.background_color;
+ } else if (rhs.set_background_color) {
+ if (!background_color.is_rgb || !rhs.background_color.is_rgb)
+ FMT_THROW(format_error("can't AND a terminal color"));
+ background_color.value.rgb_color &= rhs.background_color.value.rgb_color;
+ }
+
+ ems = static_cast<emphasis>(static_cast<uint8_t>(ems) &
+ static_cast<uint8_t>(rhs.ems));
+ return *this;
+ }
+
friend FMT_CONSTEXPR_DECL text_style fg(detail::color_type foreground)
FMT_NOEXCEPT;
+
friend FMT_CONSTEXPR_DECL text_style bg(detail::color_type background)
FMT_NOEXCEPT;
emphasis ems;
};
-FMT_CONSTEXPR text_style fg(detail::color_type foreground) FMT_NOEXCEPT {
- return text_style(/*is_foreground=*/true, foreground);
+/** Creates a text style from the foreground (text) color. */
+FMT_CONSTEXPR inline text_style fg(detail::color_type foreground) FMT_NOEXCEPT {
+ return text_style(true, foreground);
}
-FMT_CONSTEXPR text_style bg(detail::color_type background) FMT_NOEXCEPT {
- return text_style(/*is_foreground=*/false, background);
+/** Creates a text style from the background color. */
+FMT_CONSTEXPR inline text_style bg(detail::color_type background) FMT_NOEXCEPT {
+ return text_style(false, background);
}
-FMT_CONSTEXPR text_style operator|(emphasis lhs, emphasis rhs) FMT_NOEXCEPT {
+FMT_CONSTEXPR inline text_style operator|(emphasis lhs,
+ emphasis rhs) FMT_NOEXCEPT {
return text_style(lhs) | rhs;
}
-namespace detail {
+FMT_BEGIN_DETAIL_NAMESPACE
template <typename Char> struct ansi_color_escape {
FMT_CONSTEXPR ansi_color_escape(detail::color_type text_color,
// If we have a terminal color, we need to output another escape code
// sequence.
if (!text_color.is_rgb) {
- bool is_background = esc == detail::data::background_color;
+ bool is_background = esc == string_view("\x1b[48;2;");
uint32_t value = text_color.value.term_color;
// Background ASCII codes are the same as the foreground ones but with
// 10 more.
FMT_CONSTEXPR operator const Char*() const FMT_NOEXCEPT { return buffer; }
FMT_CONSTEXPR const Char* begin() const FMT_NOEXCEPT { return buffer; }
- FMT_CONSTEXPR const Char* end() const FMT_NOEXCEPT {
+ FMT_CONSTEXPR_CHAR_TRAITS const Char* end() const FMT_NOEXCEPT {
return buffer + std::char_traits<Char>::length(buffer);
}
template <typename Char>
FMT_CONSTEXPR ansi_color_escape<Char> make_foreground_color(
detail::color_type foreground) FMT_NOEXCEPT {
- return ansi_color_escape<Char>(foreground, detail::data::foreground_color);
+ 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) FMT_NOEXCEPT {
- return ansi_color_escape<Char>(background, detail::data::background_color);
+ return ansi_color_escape<Char>(background, "\x1b[48;2;");
}
template <typename Char>
}
template <typename Char> inline void reset_color(FILE* stream) FMT_NOEXCEPT {
- fputs(detail::data::reset_color, stream);
+ fputs("\x1b[0m", stream);
}
template <> inline void reset_color<wchar_t>(FILE* stream) FMT_NOEXCEPT {
- fputs(detail::data::wreset_color, stream);
+ fputs(L"\x1b[0m", stream);
}
template <typename Char>
inline void reset_color(buffer<Char>& buffer) FMT_NOEXCEPT {
- const char* begin = data::reset_color;
- const char* end = begin + sizeof(data::reset_color) - 1;
- buffer.append(begin, end);
+ auto reset_color = string_view("\x1b[0m");
+ buffer.append(reset_color.begin(), reset_color.end());
}
template <typename Char>
auto background = detail::make_background_color<Char>(ts.get_background());
buf.append(background.begin(), background.end());
}
- detail::vformat_to(buf, format_str, args);
+ detail::vformat_to(buf, format_str, args, {});
if (has_style) detail::reset_color<Char>(buf);
}
-} // namespace detail
+
+FMT_END_DETAIL_NAMESPACE
template <typename S, typename Char = char_t<S>>
void vprint(std::FILE* f, const text_style& ts, const S& format,
}
/**
+ \rst
Formats a string and prints it to stdout using ANSI escape sequences to
specify text formatting.
- Example:
+
+ **Example**::
+
fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
"Elapsed time: {0:.2f} seconds", 1.23);
+ \endrst
*/
template <typename S, typename... Args,
FMT_ENABLE_IF(detail::is_string<S>::value)>
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) {
- return vformat(ts, to_string_view(format_str),
- fmt::make_args_checked<Args...>(format_str, args...));
+ return fmt::vformat(ts, to_string_view(format_str),
+
fmt::make_args_checked<Args...>(format_str, args...));
}
/**
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) {
- decltype(detail::get_buffer<Char>(out)) buf(detail::get_buffer_init(out));
+ auto&& buf = detail::get_buffer<Char>(out);
detail::vformat_to(buf, ts, format_str, args);
return detail::get_iterator(buf);
}
fmt::make_args_checked<Args...>(format_str, args...));
}
+FMT_MODULE_EXPORT_END
FMT_END_NAMESPACE
#endif // FMT_COLOR_H_
#ifndef FMT_COMPILE_H_
#define FMT_COMPILE_H_
-#include <vector>
-
#include "format.h"
FMT_BEGIN_NAMESPACE
namespace detail {
-// A compile-time string which is compiled into fast formatting code.
-class compiled_string {};
-
-template <typename S>
-struct is_compiled_string : std::is_base_of<compiled_string, S> {};
-
-/**
- \rst
- Converts a string literal *s* into a format string that will be parsed at
- compile time and converted into efficient formatting code. Requires C++17
- ``constexpr if`` compiler support.
-
- **Example**::
-
- // Converts 42 into std::string using the most efficient method and no
- // runtime format string processing.
- std::string s = fmt::format(FMT_COMPILE("{}"), 42);
- \endrst
- */
-#define FMT_COMPILE(s) FMT_STRING_IMPL(s, fmt::detail::compiled_string)
-
-template <typename T, typename... Tail>
-const T& first(const T& value, const Tail&...) {
- return value;
-}
-
-// Part of a compiled format string. It can be either literal text or a
-// replacement field.
-template <typename Char> struct format_part {
- enum class kind { arg_index, arg_name, text, replacement };
+// An output iterator that counts the number of objects written to it and
+// discards them.
+class counting_iterator {
+ private:
+ size_t count_;
- struct replacement {
- arg_ref<Char> arg_id;
- dynamic_format_specs<Char> specs;
+ public:
+ using iterator_category = std::output_iterator_tag;
+ using difference_type = std::ptrdiff_t;
+ using pointer = void;
+ using reference = void;
+ using _Unchecked_type = counting_iterator; // Mark iterator as checked.
+
+ struct value_type {
+ template <typename T> void operator=(const T&) {}
};
- kind part_kind;
- union value {
- int arg_index;
- basic_string_view<Char> str;
- replacement repl;
-
- FMT_CONSTEXPR value(int index = 0) : arg_index(index) {}
- FMT_CONSTEXPR value(basic_string_view<Char> s) : str(s) {}
- FMT_CONSTEXPR value(replacement r) : repl(r) {}
- } val;
- // Position past the end of the argument id.
- const Char* arg_id_end = nullptr;
+ counting_iterator() : count_(0) {}
- FMT_CONSTEXPR format_part(kind k = kind::arg_index, value v = {})
- : part_kind(k), val(v) {}
+ size_t count() const { return count_; }
- static FMT_CONSTEXPR format_part make_arg_index(int index) {
- return format_part(kind::arg_index, index);
- }
- static FMT_CONSTEXPR format_part make_arg_name(basic_string_view<Char> name) {
- return format_part(kind::arg_name, name);
+ counting_iterator& operator++() {
+ ++count_;
+ return *this;
}
- static FMT_CONSTEXPR format_part make_text(basic_string_view<Char> text) {
- return format_part(kind::text, text);
+ counting_iterator operator++(int) {
+ auto it = *this;
+ ++*this;
+ return it;
}
- static FMT_CONSTEXPR format_part make_replacement(replacement repl) {
- return format_part(kind::replacement, repl);
+
+ friend counting_iterator operator+(counting_iterator it, difference_type n) {
+ it.count_ += static_cast<size_t>(n);
+ return it;
}
+
+ value_type operator*() const { return {}; }
};
-template <typename Char> struct part_counter {
- unsigned num_parts = 0;
+template <typename Char, typename InputIt>
+inline counting_iterator copy_str(InputIt begin, InputIt end,
+ counting_iterator it) {
+ return it + (end - begin);
+}
- FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) {
- if (begin != end) ++num_parts;
- }
+template <typename OutputIt> class truncating_iterator_base {
+ protected:
+ OutputIt out_;
+ size_t limit_;
+ size_t count_ = 0;
- FMT_CONSTEXPR int on_arg_id() { return ++num_parts, 0; }
- FMT_CONSTEXPR int on_arg_id(int) { return ++num_parts, 0; }
- FMT_CONSTEXPR int on_arg_id(basic_string_view<Char>) {
- return ++num_parts, 0;
- }
+ truncating_iterator_base() : out_(), limit_(0) {}
- FMT_CONSTEXPR void on_replacement_field(int, const Char*) {}
-
- FMT_CONSTEXPR const Char* on_format_specs(int, const Char* begin,
- const Char* end) {
- // Find the matching brace.
- unsigned brace_counter = 0;
- for (; begin != end; ++begin) {
- if (*begin == '{') {
- ++brace_counter;
- } else if (*begin == '}') {
- if (brace_counter == 0u) break;
- --brace_counter;
- }
- }
- return begin;
- }
+ truncating_iterator_base(OutputIt out, size_t limit)
+ : out_(out), limit_(limit) {}
- FMT_CONSTEXPR void on_error(const char*) {}
+ public:
+ using iterator_category = std::output_iterator_tag;
+ using value_type = typename std::iterator_traits<OutputIt>::value_type;
+ using difference_type = std::ptrdiff_t;
+ using pointer = void;
+ using reference = void;
+ using _Unchecked_type =
+ truncating_iterator_base; // Mark iterator as checked.
+
+ OutputIt base() const { return out_; }
+ size_t count() const { return count_; }
};
-// Counts the number of parts in a format string.
-template <typename Char>
-FMT_CONSTEXPR unsigned count_parts(basic_string_view<Char> format_str) {
- part_counter<Char> counter;
- parse_format_string<true>(format_str, counter);
- return counter.num_parts;
-}
-
-template <typename Char, typename PartHandler>
-class format_string_compiler : public error_handler {
- private:
- using part = format_part<Char>;
+// An output iterator that truncates the output and counts the number of objects
+// written to it.
+template <typename OutputIt,
+ typename Enable = typename std::is_void<
+ typename std::iterator_traits<OutputIt>::value_type>::type>
+class truncating_iterator;
- PartHandler handler_;
- part part_;
- basic_string_view<Char> format_str_;
- basic_format_parse_context<Char> parse_context_;
+template <typename OutputIt>
+class truncating_iterator<OutputIt, std::false_type>
+ : public truncating_iterator_base<OutputIt> {
+ mutable typename truncating_iterator_base<OutputIt>::value_type blackhole_;
public:
- FMT_CONSTEXPR format_string_compiler(basic_string_view<Char> format_str,
- PartHandler handler)
- : handler_(handler),
- format_str_(format_str),
- parse_context_(format_str) {}
-
- FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) {
- if (begin != end)
- handler_(part::make_text({begin, to_unsigned(end - begin)}));
- }
-
- FMT_CONSTEXPR int on_arg_id() {
- part_ = part::make_arg_index(parse_context_.next_arg_id());
- return 0;
- }
+ using value_type = typename truncating_iterator_base<OutputIt>::value_type;
- FMT_CONSTEXPR int on_arg_id(int id) {
- parse_context_.check_arg_id(id);
- part_ = part::make_arg_index(id);
- return 0;
- }
+ truncating_iterator() = default;
- FMT_CONSTEXPR int on_arg_id(basic_string_view<Char> id) {
- part_ = part::make_arg_name(id);
- return 0;
- }
+ truncating_iterator(OutputIt out, size_t limit)
+ : truncating_iterator_base<OutputIt>(out, limit) {}
- FMT_CONSTEXPR void on_replacement_field(int, const Char* ptr) {
- part_.arg_id_end = ptr;
- handler_(part_);
+ truncating_iterator& operator++() {
+ if (this->count_++ < this->limit_) ++this->out_;
+ return *this;
}
- FMT_CONSTEXPR const Char* on_format_specs(int, const Char* begin,
- const Char* end) {
- auto repl = typename part::replacement();
- dynamic_specs_handler<basic_format_parse_context<Char>> handler(
- repl.specs, parse_context_);
- auto it = parse_format_specs(begin, end, handler);
- if (*it != '}') on_error("missing '}' in format string");
- repl.arg_id = part_.part_kind == part::kind::arg_index
- ? arg_ref<Char>(part_.val.arg_index)
- : arg_ref<Char>(part_.val.str);
- auto part = part::make_replacement(repl);
- part.arg_id_end = begin;
- handler_(part);
+ truncating_iterator operator++(int) {
+ auto it = *this;
+ ++*this;
return it;
}
-};
-
-// Compiles a format string and invokes handler(part) for each parsed part.
-template <bool IS_CONSTEXPR, typename Char, typename PartHandler>
-FMT_CONSTEXPR void compile_format_string(basic_string_view<Char> format_str,
- PartHandler handler) {
- parse_format_string<IS_CONSTEXPR>(
- format_str,
- format_string_compiler<Char, PartHandler>(format_str, handler));
-}
-
-template <typename OutputIt, typename Context, typename Id>
-void format_arg(
- basic_format_parse_context<typename Context::char_type>& parse_ctx,
- Context& ctx, Id arg_id) {
- ctx.advance_to(visit_format_arg(
- arg_formatter<OutputIt, typename Context::char_type>(ctx, &parse_ctx),
- ctx.arg(arg_id)));
-}
-
-// vformat_to is defined in a subnamespace to prevent ADL.
-namespace cf {
-template <typename Context, typename OutputIt, typename CompiledFormat>
-auto vformat_to(OutputIt out, CompiledFormat& cf,
- basic_format_args<Context> args) -> typename Context::iterator {
- using char_type = typename Context::char_type;
- basic_format_parse_context<char_type> parse_ctx(
- to_string_view(cf.format_str_));
- Context ctx(out, args);
-
- const auto& parts = cf.parts();
- for (auto part_it = std::begin(parts); part_it != std::end(parts);
- ++part_it) {
- const auto& part = *part_it;
- const auto& value = part.val;
-
- using format_part_t = format_part<char_type>;
- switch (part.part_kind) {
- case format_part_t::kind::text: {
- const auto text = value.str;
- auto output = ctx.out();
- auto&& it = reserve(output, text.size());
- it = std::copy_n(text.begin(), text.size(), it);
- ctx.advance_to(output);
- break;
- }
- case format_part_t::kind::arg_index:
- advance_to(parse_ctx, part.arg_id_end);
- detail::format_arg<OutputIt>(parse_ctx, ctx, value.arg_index);
- break;
-
- case format_part_t::kind::arg_name:
- advance_to(parse_ctx, part.arg_id_end);
- detail::format_arg<OutputIt>(parse_ctx, ctx, value.str);
- break;
-
- case format_part_t::kind::replacement: {
- const auto& arg_id_value = value.repl.arg_id.val;
- const auto arg = value.repl.arg_id.kind == arg_id_kind::index
- ? ctx.arg(arg_id_value.index)
- : ctx.arg(arg_id_value.name);
-
- auto specs = value.repl.specs;
-
- handle_dynamic_spec<width_checker>(specs.width, specs.width_ref, ctx);
- handle_dynamic_spec<precision_checker>(specs.precision,
- specs.precision_ref, ctx);
-
- error_handler h;
- numeric_specs_checker<error_handler> checker(h, arg.type());
- if (specs.align == align::numeric) checker.require_numeric_argument();
- if (specs.sign != sign::none) checker.check_sign();
- if (specs.alt) checker.require_numeric_argument();
- if (specs.precision >= 0) checker.check_precision();
-
- advance_to(parse_ctx, part.arg_id_end);
- ctx.advance_to(
- visit_format_arg(arg_formatter<OutputIt, typename Context::char_type>(
- ctx, nullptr, &specs),
- arg));
- break;
- }
- }
+ value_type& operator*() const {
+ return this->count_ < this->limit_ ? *this->out_ : blackhole_;
}
- return ctx.out();
-}
-} // namespace cf
-
-struct basic_compiled_format {};
+};
-template <typename S, typename = void>
-struct compiled_format_base : basic_compiled_format {
- using char_type = char_t<S>;
- using parts_container = std::vector<detail::format_part<char_type>>;
+template <typename OutputIt>
+class truncating_iterator<OutputIt, std::true_type>
+ : public truncating_iterator_base<OutputIt> {
+ public:
+ truncating_iterator() = default;
- parts_container compiled_parts;
+ truncating_iterator(OutputIt out, size_t limit)
+ : truncating_iterator_base<OutputIt>(out, limit) {}
- explicit compiled_format_base(basic_string_view<char_type> format_str) {
- compile_format_string<false>(format_str,
- [this](const format_part<char_type>& part) {
- compiled_parts.push_back(part);
- });
+ template <typename T> truncating_iterator& operator=(T val) {
+ if (this->count_++ < this->limit_) *this->out_++ = val;
+ return *this;
}
- const parts_container& parts() const { return compiled_parts; }
-};
-
-template <typename Char, unsigned N> struct format_part_array {
- format_part<Char> data[N] = {};
- FMT_CONSTEXPR format_part_array() = default;
+ truncating_iterator& operator++() { return *this; }
+ truncating_iterator& operator++(int) { return *this; }
+ truncating_iterator& operator*() { return *this; }
};
-template <typename Char, unsigned N>
-FMT_CONSTEXPR format_part_array<Char, N> compile_to_parts(
- basic_string_view<Char> format_str) {
- format_part_array<Char, N> parts;
- unsigned counter = 0;
- // This is not a lambda for compatibility with older compilers.
- struct {
- format_part<Char>* parts;
- unsigned* counter;
- FMT_CONSTEXPR void operator()(const format_part<Char>& part) {
- parts[(*counter)++] = part;
- }
- } collector{parts.data, &counter};
- compile_format_string<true>(format_str, collector);
- if (counter < N) {
- parts.data[counter] =
- format_part<Char>::make_text(basic_string_view<Char>());
- }
- return parts;
-}
-
-template <typename T> constexpr const T& constexpr_max(const T& a, const T& b) {
- return (a < b) ? b : a;
-}
+// A compile-time string which is compiled into fast formatting code.
+class compiled_string {};
template <typename S>
-struct compiled_format_base<S, enable_if_t<is_compile_string<S>::value>>
- : basic_compiled_format {
- using char_type = char_t<S>;
+struct is_compiled_string : std::is_base_of<compiled_string, S> {};
+
+/**
+ \rst
+ Converts a string literal *s* into a format string that will be parsed at
+ compile time and converted into efficient formatting code. Requires C++17
+ ``constexpr if`` compiler support.
- FMT_CONSTEXPR explicit compiled_format_base(basic_string_view<char_type>) {}
+ **Example**::
-// Workaround for old compilers. Format string compilation will not be
-// performed there anyway.
-#if FMT_USE_CONSTEXPR
- static FMT_CONSTEXPR_DECL const unsigned num_format_parts =
- constexpr_max(count_parts(to_string_view(S())), 1u);
+ // Converts 42 into std::string using the most efficient method and no
+ // runtime format string processing.
+ std::string s = fmt::format(FMT_COMPILE("{}"), 42);
+ \endrst
+ */
+#ifdef __cpp_if_constexpr
+# define FMT_COMPILE(s) \
+ FMT_STRING_IMPL(s, fmt::detail::compiled_string, explicit)
#else
- static const unsigned num_format_parts = 1;
+# define FMT_COMPILE(s) FMT_STRING(s)
#endif
- using parts_container = format_part<char_type>[num_format_parts];
-
- const parts_container& parts() const {
- static FMT_CONSTEXPR_DECL const auto compiled_parts =
- compile_to_parts<char_type, num_format_parts>(
- detail::to_string_view(S()));
- return compiled_parts.data;
+#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS
+template <typename Char, size_t N,
+ fmt::detail_exported::fixed_string<Char, N> Str>
+struct udl_compiled_string : compiled_string {
+ using char_type = Char;
+ constexpr operator basic_string_view<char_type>() const {
+ return {Str.data, N - 1};
}
};
+#endif
-template <typename S, typename... Args>
-class compiled_format : private compiled_format_base<S> {
- public:
- using typename compiled_format_base<S>::char_type;
-
- private:
- basic_string_view<char_type> format_str_;
-
- template <typename Context, typename OutputIt, typename CompiledFormat>
- friend auto cf::vformat_to(OutputIt out, CompiledFormat& cf,
- basic_format_args<Context> args) ->
- typename Context::iterator;
-
- public:
- compiled_format() = delete;
- explicit constexpr compiled_format(basic_string_view<char_type> format_str)
- : compiled_format_base<S>(format_str), format_str_(format_str) {}
-};
+template <typename T, typename... Tail>
+const T& first(const T& value, const Tail&...) {
+ return value;
+}
#ifdef __cpp_if_constexpr
template <typename... Args> struct type_list {};
return get<N - 1>(rest...);
}
+template <typename Char, typename... Args>
+constexpr int get_arg_index_by_name(basic_string_view<Char> name,
+ type_list<Args...>) {
+ return get_arg_index_by_name<Args...>(name);
+}
+
template <int N, typename> struct get_type_impl;
template <int N, typename... Args> struct get_type_impl<N, type_list<Args...>> {
using char_type = Char;
template <typename OutputIt, typename... Args>
- OutputIt format(OutputIt out, const Args&...) const {
+ constexpr OutputIt format(OutputIt out, const Args&...) const {
return write<Char>(out, data);
}
};
using char_type = Char;
template <typename OutputIt, typename... Args>
- OutputIt format(OutputIt out, const Args&...) const {
+ constexpr OutputIt format(OutputIt out, const Args&...) const {
return write<Char>(out, value);
}
};
+// This ensures that the argument type is convertible to `const T&`.
+template <typename T, int N, typename... Args>
+constexpr const T& get_arg_checked(const Args&... args) {
+ const auto& arg = get<N>(args...);
+ if constexpr (detail::is_named_arg<remove_cvref_t<decltype(arg)>>()) {
+ return arg.value;
+ } else {
+ return arg;
+ }
+}
+
template <typename Char>
struct is_compiled_format<code_unit<Char>> : std::true_type {};
using char_type = Char;
template <typename OutputIt, typename... Args>
- OutputIt format(OutputIt out, const Args&... args) const {
- // This ensures that the argument type is convertile to `const T&`.
- const T& arg = get<N>(args...);
- return write<Char>(out, arg);
+ constexpr OutputIt format(OutputIt out, const Args&... args) const {
+ return write<Char>(out, get_arg_checked<T, N>(args...));
}
};
template <typename Char, typename T, int N>
struct is_compiled_format<field<Char, T, N>> : std::true_type {};
+// A replacement field that refers to argument with name.
+template <typename Char> struct runtime_named_field {
+ using char_type = Char;
+ basic_string_view<Char> name;
+
+ template <typename OutputIt, typename T>
+ constexpr static bool try_format_argument(
+ OutputIt& out,
+ // [[maybe_unused]] due to unused-but-set-parameter warning in GCC 7,8,9
+ [[maybe_unused]] basic_string_view<Char> arg_name, const T& arg) {
+ if constexpr (is_named_arg<typename std::remove_cv<T>::type>::value) {
+ if (arg_name == arg.name) {
+ out = write<Char>(out, arg.value);
+ return true;
+ }
+ }
+ return false;
+ }
+
+ template <typename OutputIt, typename... Args>
+ constexpr OutputIt format(OutputIt out, const Args&... args) const {
+ bool found = (try_format_argument(out, name, args) || ...);
+ if (!found) {
+ throw format_error("argument with specified name is not found");
+ }
+ return out;
+ }
+};
+
+template <typename Char>
+struct is_compiled_format<runtime_named_field<Char>> : std::true_type {};
+
// A replacement field that refers to argument N and has format specifiers.
template <typename Char, typename T, int N> struct spec_field {
using char_type = Char;
- mutable formatter<T, Char> fmt;
+ formatter<T, Char> fmt;
template <typename OutputIt, typename... Args>
- OutputIt format(OutputIt out, const Args&... args) const {
- // This ensures that the argument type is convertile to `const T&`.
- const T& arg = get<N>(args...);
+ constexpr FMT_INLINE OutputIt format(OutputIt out,
+ const Args&... args) const {
const auto& vargs =
- make_format_args<basic_format_context<OutputIt, Char>>(args...);
+ fmt::make_format_args<basic_format_context<OutputIt, Char>>(args...);
basic_format_context<OutputIt, Char> ctx(out, vargs);
- return fmt.format(arg, ctx);
+ return fmt.format(get_arg_checked<T, N>(args...), ctx);
}
};
using char_type = typename L::char_type;
template <typename OutputIt, typename... Args>
- OutputIt format(OutputIt out, const Args&... args) const {
+ constexpr OutputIt format(OutputIt out, const Args&... args) const {
out = lhs.format(out, args...);
return rhs.format(out, args...);
}
int next_arg_id;
};
+constexpr int manual_indexing_id = -1;
+
template <typename T, typename Char>
constexpr parse_specs_result<T, Char> parse_specs(basic_string_view<Char> str,
- size_t pos, int arg_id) {
+ size_t pos, int next_arg_id) {
str.remove_prefix(pos);
- auto ctx = basic_format_parse_context<Char>(str, {}, arg_id + 1);
+ auto ctx = basic_format_parse_context<Char>(str, {}, next_arg_id);
auto f = formatter<T, Char>();
auto end = f.parse(ctx);
- return {f, pos + (end - str.data()) + 1, ctx.next_arg_id()};
+ return {f, pos + fmt::detail::to_unsigned(end - str.data()) + 1,
+ next_arg_id == 0 ? manual_indexing_id : ctx.next_arg_id()};
+}
+
+template <typename Char> struct arg_id_handler {
+ arg_ref<Char> arg_id;
+
+ constexpr int operator()() {
+ FMT_ASSERT(false, "handler cannot be used with automatic indexing");
+ return 0;
+ }
+ constexpr int operator()(int id) {
+ arg_id = arg_ref<Char>(id);
+ return 0;
+ }
+ constexpr int operator()(basic_string_view<Char> id) {
+ arg_id = arg_ref<Char>(id);
+ return 0;
+ }
+
+ constexpr void on_error(const char* message) { throw format_error(message); }
+};
+
+template <typename Char> struct parse_arg_id_result {
+ arg_ref<Char> arg_id;
+ const Char* arg_id_end;
+};
+
+template <int ID, typename Char>
+constexpr auto parse_arg_id(const Char* begin, const Char* end) {
+ auto handler = arg_id_handler<Char>{arg_ref<Char>{}};
+ auto arg_id_end = parse_arg_id(begin, end, handler);
+ return parse_arg_id_result<Char>{handler.arg_id, arg_id_end};
+}
+
+template <typename T, typename Enable = void> struct field_type {
+ using type = remove_cvref_t<T>;
+};
+
+template <typename T>
+struct field_type<T, enable_if_t<detail::is_named_arg<T>::value>> {
+ using type = remove_cvref_t<decltype(T::value)>;
+};
+
+template <typename T, typename Args, size_t END_POS, int ARG_INDEX, int NEXT_ID,
+ typename S>
+constexpr auto parse_replacement_field_then_tail(S format_str) {
+ using char_type = typename S::char_type;
+ constexpr auto str = basic_string_view<char_type>(format_str);
+ constexpr char_type c = END_POS != str.size() ? str[END_POS] : char_type();
+ if constexpr (c == '}') {
+ return parse_tail<Args, END_POS + 1, NEXT_ID>(
+ field<char_type, typename field_type<T>::type, ARG_INDEX>(),
+ format_str);
+ } else if constexpr (c == ':') {
+ constexpr auto result = parse_specs<typename field_type<T>::type>(
+ str, END_POS + 1, NEXT_ID == manual_indexing_id ? 0 : NEXT_ID);
+ return parse_tail<Args, result.end, result.next_arg_id>(
+ spec_field<char_type, typename field_type<T>::type, ARG_INDEX>{
+ result.fmt},
+ format_str);
+ }
}
// Compiles a non-empty format string and returns the compiled representation
template <typename Args, size_t POS, int ID, typename S>
constexpr auto compile_format_string(S format_str) {
using char_type = typename S::char_type;
- constexpr basic_string_view<char_type> str = format_str;
+ constexpr auto str = basic_string_view<char_type>(format_str);
if constexpr (str[POS] == '{') {
- if (POS + 1 == str.size())
+ if constexpr (POS + 1 == str.size())
throw format_error("unmatched '{' in format string");
if constexpr (str[POS + 1] == '{') {
return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), format_str);
- } else if constexpr (str[POS + 1] == '}') {
- using type = get_type<ID, Args>;
- return parse_tail<Args, POS + 2, ID + 1>(field<char_type, type, ID>(),
- format_str);
- } else if constexpr (str[POS + 1] == ':') {
- using type = get_type<ID, Args>;
- constexpr auto result = parse_specs<type>(str, POS + 2, ID);
- return parse_tail<Args, result.end, result.next_arg_id>(
- spec_field<char_type, type, ID>{result.fmt}, format_str);
+ } else if constexpr (str[POS + 1] == '}' || str[POS + 1] == ':') {
+ static_assert(ID != manual_indexing_id,
+ "cannot switch from manual to automatic argument indexing");
+ constexpr auto next_id =
+ ID != manual_indexing_id ? ID + 1 : manual_indexing_id;
+ return parse_replacement_field_then_tail<get_type<ID, Args>, Args,
+ POS + 1, ID, next_id>(
+ format_str);
} else {
- return unknown_format();
+ constexpr auto arg_id_result =
+ parse_arg_id<ID>(str.data() + POS + 1, str.data() + str.size());
+ constexpr auto arg_id_end_pos = arg_id_result.arg_id_end - str.data();
+ constexpr char_type c =
+ arg_id_end_pos != str.size() ? str[arg_id_end_pos] : char_type();
+ static_assert(c == '}' || c == ':', "missing '}' in format string");
+ if constexpr (arg_id_result.arg_id.kind == arg_id_kind::index) {
+ static_assert(
+ ID == manual_indexing_id || ID == 0,
+ "cannot switch from automatic to manual argument indexing");
+ constexpr auto arg_index = arg_id_result.arg_id.val.index;
+ return parse_replacement_field_then_tail<get_type<arg_index, Args>,
+ Args, arg_id_end_pos,
+ arg_index, manual_indexing_id>(
+ format_str);
+ } else if constexpr (arg_id_result.arg_id.kind == arg_id_kind::name) {
+ constexpr auto arg_index =
+ get_arg_index_by_name(arg_id_result.arg_id.val.name, Args{});
+ if constexpr (arg_index != invalid_arg_index) {
+ constexpr auto next_id =
+ ID != manual_indexing_id ? ID + 1 : manual_indexing_id;
+ return parse_replacement_field_then_tail<
+ decltype(get_type<arg_index, Args>::value), Args, arg_id_end_pos,
+ arg_index, next_id>(format_str);
+ } else {
+ if constexpr (c == '}') {
+ return parse_tail<Args, arg_id_end_pos + 1, ID>(
+ runtime_named_field<char_type>{arg_id_result.arg_id.val.name},
+ format_str);
+ } else if constexpr (c == ':') {
+ return unknown_format(); // no type info for specs parsing
+ }
+ }
+ }
}
} else if constexpr (str[POS] == '}') {
- if (POS + 1 == str.size())
+ if constexpr (POS + 1 == str.size())
throw format_error("unmatched '}' in format string");
return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), format_str);
} else {
}
template <typename... Args, typename S,
- FMT_ENABLE_IF(is_compile_string<S>::value ||
- detail::is_compiled_string<S>::value)>
+ FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
constexpr auto compile(S format_str) {
- constexpr basic_string_view<typename S::char_type> str = format_str;
+ constexpr auto str = basic_string_view<typename S::char_type>(format_str);
if constexpr (str.size() == 0) {
return detail::make_text(str, 0, 0);
} else {
constexpr auto result =
detail::compile_format_string<detail::type_list<Args...>, 0, 0>(
format_str);
- if constexpr (std::is_same<remove_cvref_t<decltype(result)>,
- detail::unknown_format>()) {
- return detail::compiled_format<S, Args...>(to_string_view(format_str));
- } else {
- return result;
- }
+ return result;
}
}
-#else
-template <typename... Args, typename S,
- FMT_ENABLE_IF(is_compile_string<S>::value)>
-constexpr auto compile(S format_str) -> detail::compiled_format<S, Args...> {
- return detail::compiled_format<S, Args...>(to_string_view(format_str));
-}
#endif // __cpp_if_constexpr
-
-// Compiles the format string which must be a string literal.
-template <typename... Args, typename Char, size_t N>
-auto compile(const Char (&format_str)[N])
- -> detail::compiled_format<const Char*, Args...> {
- return detail::compiled_format<const Char*, Args...>(
- basic_string_view<Char>(format_str, N - 1));
-}
} // namespace detail
-// DEPRECATED! use FMT_COMPILE instead.
-template <typename... Args>
-FMT_DEPRECATED auto compile(const Args&... args)
- -> decltype(detail::compile(args...)) {
- return detail::compile(args...);
-}
+FMT_MODULE_EXPORT_BEGIN
-#if FMT_USE_CONSTEXPR
-# ifdef __cpp_if_constexpr
+#ifdef __cpp_if_constexpr
template <typename CompiledFormat, typename... Args,
typename Char = typename CompiledFormat::char_type,
FMT_ENABLE_IF(detail::is_compiled_format<CompiledFormat>::value)>
FMT_INLINE std::basic_string<Char> format(const CompiledFormat& cf,
const Args&... args) {
- basic_memory_buffer<Char> buffer;
- cf.format(detail::buffer_appender<Char>(buffer), args...);
- return to_string(buffer);
+ auto s = std::basic_string<Char>();
+ cf.format(std::back_inserter(s), args...);
+ return s;
}
template <typename OutputIt, typename CompiledFormat, typename... Args,
FMT_ENABLE_IF(detail::is_compiled_format<CompiledFormat>::value)>
-OutputIt format_to(OutputIt out, const CompiledFormat& cf,
- const Args&... args) {
+constexpr FMT_INLINE OutputIt format_to(OutputIt out, const CompiledFormat& cf,
+ const Args&... args) {
return cf.format(out, args...);
}
-# endif // __cpp_if_constexpr
-#endif // FMT_USE_CONSTEXPR
-
-template <typename CompiledFormat, typename... Args,
- typename Char = typename CompiledFormat::char_type,
- FMT_ENABLE_IF(std::is_base_of<detail::basic_compiled_format,
- CompiledFormat>::value)>
-std::basic_string<Char> format(const CompiledFormat& cf, const Args&... args) {
- basic_memory_buffer<Char> buffer;
- using context = buffer_context<Char>;
- detail::cf::vformat_to<context>(detail::buffer_appender<Char>(buffer), cf,
- make_format_args<context>(args...));
- return to_string(buffer);
-}
template <typename S, typename... Args,
FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
FMT_INLINE std::basic_string<typename S::char_type> format(const S&,
Args&&... args) {
-#ifdef __cpp_if_constexpr
if constexpr (std::is_same<typename S::char_type, char>::value) {
- constexpr basic_string_view<typename S::char_type> str = S();
- if (str.size() == 2 && str[0] == '{' && str[1] == '}')
- return fmt::to_string(detail::first(args...));
+ constexpr auto str = basic_string_view<typename S::char_type>(S());
+ if constexpr (str.size() == 2 && str[0] == '{' && str[1] == '}') {
+ const auto& first = detail::first(args...);
+ if constexpr (detail::is_named_arg<
+ remove_cvref_t<decltype(first)>>::value) {
+ return fmt::to_string(first.value);
+ } else {
+ return fmt::to_string(first);
+ }
+ }
}
-#endif
constexpr auto compiled = detail::compile<Args...>(S());
- return format(compiled, std::forward<Args>(args)...);
-}
-
-template <typename OutputIt, typename CompiledFormat, typename... Args,
- FMT_ENABLE_IF(std::is_base_of<detail::basic_compiled_format,
- CompiledFormat>::value)>
-OutputIt format_to(OutputIt out, const CompiledFormat& cf,
- const Args&... args) {
- using char_type = typename CompiledFormat::char_type;
- using context = format_context_t<OutputIt, char_type>;
- return detail::cf::vformat_to<context>(out, cf,
- make_format_args<context>(args...));
+ if constexpr (std::is_same<remove_cvref_t<decltype(compiled)>,
+ detail::unknown_format>()) {
+ return format(static_cast<basic_string_view<typename S::char_type>>(S()),
+ std::forward<Args>(args)...);
+ } else {
+ return format(compiled, std::forward<Args>(args)...);
+ }
}
template <typename OutputIt, typename S, typename... Args,
FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
-OutputIt format_to(OutputIt out, const S&, const Args&... args) {
+FMT_CONSTEXPR OutputIt format_to(OutputIt out, const S&, Args&&... args) {
constexpr auto compiled = detail::compile<Args...>(S());
- return format_to(out, compiled, args...);
+ if constexpr (std::is_same<remove_cvref_t<decltype(compiled)>,
+ detail::unknown_format>()) {
+ return format_to(out,
+ static_cast<basic_string_view<typename S::char_type>>(S()),
+ std::forward<Args>(args)...);
+ } else {
+ return format_to(out, compiled, std::forward<Args>(args)...);
+ }
}
+#endif
-template <typename OutputIt, typename CompiledFormat, typename... Args>
-auto format_to_n(OutputIt out, size_t n, const CompiledFormat& cf,
- const Args&... args) ->
- typename std::enable_if<
- detail::is_output_iterator<OutputIt,
- typename CompiledFormat::char_type>::value &&
- std::is_base_of<detail::basic_compiled_format,
- CompiledFormat>::value,
- format_to_n_result<OutputIt>>::type {
- auto it =
- format_to(detail::truncating_iterator<OutputIt>(out, n), cf, 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 it = format_to(detail::truncating_iterator<OutputIt>(out, n), format_str,
+ std::forward<Args>(args)...);
return {it.base(), it.count()};
}
-template <typename OutputIt, typename S, typename... Args,
+template <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&,
- const Args&... args) {
- constexpr auto compiled = detail::compile<Args...>(S());
- auto it = format_to(detail::truncating_iterator<OutputIt>(out, n), compiled,
- args...);
- return {it.base(), it.count()};
+size_t formatted_size(const S& format_str, const Args&... args) {
+ return format_to(detail::counting_iterator(), format_str, args...).count();
}
-template <typename CompiledFormat, typename... Args>
-size_t formatted_size(const CompiledFormat& cf, const Args&... args) {
- return format_to(detail::counting_iterator(), cf, args...).count();
+template <typename S, typename... Args,
+ FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
+void print(std::FILE* f, const S& format_str, const Args&... args) {
+ memory_buffer buffer;
+ format_to(std::back_inserter(buffer), format_str, args...);
+ detail::print(f, {buffer.data(), buffer.size()});
}
+template <typename S, typename... Args,
+ FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
+void print(const S& format_str, const Args&... args) {
+ print(stdout, format_str, args...);
+}
+
+#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS
+inline namespace literals {
+template <detail_exported::fixed_string Str>
+constexpr detail::udl_compiled_string<
+ remove_cvref_t<decltype(Str.data[0])>,
+ sizeof(Str.data) / sizeof(decltype(Str.data[0])), Str>
+operator""_cf() {
+ return {};
+}
+} // namespace literals
+#endif
+
+FMT_MODULE_EXPORT_END
FMT_END_NAMESPACE
#endif // FMT_COMPILE_H_
-// Formatting library for C++ - the core API
+// Formatting library for C++ - the core API for char/UTF-8
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
#include <cstdio> // std::FILE
#include <cstring>
-#include <functional>
#include <iterator>
-#include <memory>
+#include <limits>
#include <string>
#include <type_traits>
-#include <vector>
// The fmt library version in the form major * 10000 + minor * 100 + patch.
-#define FMT_VERSION 70103
+#define FMT_VERSION 80001
#ifdef __clang__
# define FMT_CLANG_VERSION (__clang_major__ * 100 + __clang_minor__)
# define FMT_CLANG_VERSION 0
#endif
-#if defined(__GNUC__) && !defined(__clang__)
+#if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER)
# define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
+# define FMT_GCC_PRAGMA(arg) _Pragma(arg)
#else
# define FMT_GCC_VERSION 0
-#endif
-
-#if defined(__INTEL_COMPILER)
-# define FMT_ICC_VERSION __INTEL_COMPILER
-#else
-# define FMT_ICC_VERSION 0
+# define FMT_GCC_PRAGMA(arg)
#endif
#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__)
# define FMT_HAS_GXX_CXX11 0
#endif
+#if defined(__INTEL_COMPILER)
+# define FMT_ICC_VERSION __INTEL_COMPILER
+#else
+# define FMT_ICC_VERSION 0
+#endif
+
#ifdef __NVCC__
# define FMT_NVCC __NVCC__
#else
#ifdef _MSC_VER
# define FMT_MSC_VER _MSC_VER
-# define FMT_SUPPRESS_MSC_WARNING(n) __pragma(warning(suppress : n))
+# define FMT_MSC_WARNING(...) __pragma(warning(__VA_ARGS__))
#else
# define FMT_MSC_VER 0
-# define FMT_SUPPRESS_MSC_WARNING(n)
+# define FMT_MSC_WARNING(...)
#endif
#ifdef __has_feature
# define FMT_HAS_FEATURE(x) 0
#endif
-#if defined(__has_include) && !defined(__INTELLISENSE__) && \
+#if defined(__has_include) && \
+ (!defined(__INTELLISENSE__) || FMT_MSC_VER > 1900) && \
(!FMT_ICC_VERSION || FMT_ICC_VERSION >= 1600)
# define FMT_HAS_INCLUDE(x) __has_include(x)
#else
# define FMT_CONSTEXPR constexpr
# define FMT_CONSTEXPR_DECL constexpr
#else
-# define FMT_CONSTEXPR inline
+# define FMT_CONSTEXPR
# define FMT_CONSTEXPR_DECL
#endif
+// Check if constexpr std::char_traits<>::compare,length is supported.
+#if defined(__GLIBCXX__)
+# if __cplusplus >= 201703L && defined(_GLIBCXX_RELEASE) && \
+ _GLIBCXX_RELEASE >= 7 // GCC 7+ libstdc++ has _GLIBCXX_RELEASE.
+# define FMT_CONSTEXPR_CHAR_TRAITS constexpr
+# endif
+#elif defined(_LIBCPP_VERSION) && __cplusplus >= 201703L && \
+ _LIBCPP_VERSION >= 4000
+# define FMT_CONSTEXPR_CHAR_TRAITS constexpr
+#elif FMT_MSC_VER >= 1914 && _MSVC_LANG >= 201703L
+# define FMT_CONSTEXPR_CHAR_TRAITS constexpr
+#endif
+#ifndef FMT_CONSTEXPR_CHAR_TRAITS
+# define FMT_CONSTEXPR_CHAR_TRAITS
+#endif
+
#ifndef FMT_OVERRIDE
# if FMT_HAS_FEATURE(cxx_override_control) || \
(FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900
# define FMT_NORETURN
#endif
-#ifndef FMT_DEPRECATED
-# if FMT_HAS_CPP14_ATTRIBUTE(deprecated) || FMT_MSC_VER >= 1900
-# define FMT_DEPRECATED [[deprecated]]
+#ifndef FMT_MAYBE_UNUSED
+# if FMT_HAS_CPP17_ATTRIBUTE(maybe_unused)
+# define FMT_MAYBE_UNUSED [[maybe_unused]]
# else
-# if (defined(__GNUC__) && !defined(__LCC__)) || defined(__clang__)
-# define FMT_DEPRECATED __attribute__((deprecated))
-# elif FMT_MSC_VER
-# define FMT_DEPRECATED __declspec(deprecated)
-# else
-# define FMT_DEPRECATED /* deprecated */
-# endif
+# define FMT_MAYBE_UNUSED
# endif
#endif
-// Workaround broken [[deprecated]] in the Intel, PGI and NVCC compilers.
-#if FMT_ICC_VERSION || defined(__PGI) || FMT_NVCC
-# define FMT_DEPRECATED_ALIAS
+#if __cplusplus == 201103L || __cplusplus == 201402L
+# if defined(__INTEL_COMPILER) || defined(__PGI)
+# define FMT_FALLTHROUGH
+# elif defined(__clang__)
+# define FMT_FALLTHROUGH [[clang::fallthrough]]
+# elif FMT_GCC_VERSION >= 700 && \
+ (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= 520)
+# define FMT_FALLTHROUGH [[gnu::fallthrough]]
+# else
+# define FMT_FALLTHROUGH
+# endif
+#elif FMT_HAS_CPP17_ATTRIBUTE(fallthrough) || \
+ (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
+# define FMT_FALLTHROUGH [[fallthrough]]
#else
-# define FMT_DEPRECATED_ALIAS FMT_DEPRECATED
+# define FMT_FALLTHROUGH
+#endif
+
+#ifndef FMT_USE_FLOAT
+# define FMT_USE_FLOAT 1
+#endif
+#ifndef FMT_USE_DOUBLE
+# define FMT_USE_DOUBLE 1
+#endif
+#ifndef FMT_USE_LONG_DOUBLE
+# define FMT_USE_LONG_DOUBLE 1
#endif
#ifndef FMT_INLINE
#ifndef FMT_USE_INLINE_NAMESPACES
# if FMT_HAS_FEATURE(cxx_inline_namespaces) || FMT_GCC_VERSION >= 404 || \
- (FMT_MSC_VER >= 1900 && !_MANAGED)
+ (FMT_MSC_VER >= 1900 && (!defined(_MANAGED) || !_MANAGED))
# define FMT_USE_INLINE_NAMESPACES 1
# else
# define FMT_USE_INLINE_NAMESPACES 0
# define FMT_INLINE_NAMESPACE namespace
# define FMT_END_NAMESPACE \
} \
- using namespace v7; \
+ using namespace v8; \
}
# endif
# define FMT_BEGIN_NAMESPACE \
namespace fmt { \
- FMT_INLINE_NAMESPACE v7 {
+ FMT_INLINE_NAMESPACE v8 {
+#endif
+
+#ifndef FMT_MODULE_EXPORT
+# define FMT_MODULE_EXPORT
+# define FMT_MODULE_EXPORT_BEGIN
+# define FMT_MODULE_EXPORT_END
+# define FMT_BEGIN_DETAIL_NAMESPACE namespace detail {
+# define FMT_END_DETAIL_NAMESPACE }
#endif
#if !defined(FMT_HEADER_ONLY) && defined(_WIN32)
-# define FMT_CLASS_API FMT_SUPPRESS_MSC_WARNING(4275)
+# define FMT_CLASS_API FMT_MSC_WARNING(suppress : 4275)
# ifdef FMT_EXPORT
# define FMT_API __declspec(dllexport)
-# define FMT_EXTERN_TEMPLATE_API FMT_API
-# define FMT_EXPORTED
# elif defined(FMT_SHARED)
# define FMT_API __declspec(dllimport)
-# define FMT_EXTERN_TEMPLATE_API FMT_API
# endif
#else
# define FMT_CLASS_API
+# if defined(FMT_EXPORT) || defined(FMT_SHARED)
+# if defined(__GNUC__) || defined(__clang__)
+# define FMT_API __attribute__((visibility("default")))
+# endif
+# endif
#endif
#ifndef FMT_API
# define FMT_API
#endif
-#ifndef FMT_EXTERN_TEMPLATE_API
-# define FMT_EXTERN_TEMPLATE_API
-#endif
-#ifndef FMT_INSTANTIATION_DEF_API
-# define FMT_INSTANTIATION_DEF_API FMT_API
-#endif
-#ifndef FMT_HEADER_ONLY
-# define FMT_EXTERN extern
+#if FMT_GCC_VERSION
+# define FMT_GCC_VISIBILITY_HIDDEN __attribute__((visibility("hidden")))
#else
-# define FMT_EXTERN
+# define FMT_GCC_VISIBILITY_HIDDEN
#endif
// libc++ supports string_view in pre-c++17.
#ifndef FMT_UNICODE
# define FMT_UNICODE !FMT_MSC_VER
#endif
-#if FMT_UNICODE && FMT_MSC_VER
-# pragma execution_character_set("utf-8")
+
+#ifndef FMT_CONSTEVAL
+# if ((FMT_GCC_VERSION >= 1000 || FMT_CLANG_VERSION >= 1101) && \
+ __cplusplus > 201703L) || \
+ (defined(__cpp_consteval) && \
+ !FMT_MSC_VER) // consteval is broken in MSVC.
+# define FMT_CONSTEVAL consteval
+# define FMT_HAS_CONSTEVAL
+# else
+# define FMT_CONSTEVAL
+# endif
+#endif
+
+#ifndef FMT_USE_NONTYPE_TEMPLATE_PARAMETERS
+# if defined(__cpp_nontype_template_args) && \
+ ((FMT_GCC_VERSION >= 903 && __cplusplus >= 201709L) || \
+ __cpp_nontype_template_args >= 201911L)
+# define FMT_USE_NONTYPE_TEMPLATE_PARAMETERS 1
+# else
+# define FMT_USE_NONTYPE_TEMPLATE_PARAMETERS 0
+# endif
+#endif
+
+// Enable minimal optimizations for more compact code in debug mode.
+FMT_GCC_PRAGMA("GCC push_options")
+#ifndef __OPTIMIZE__
+FMT_GCC_PRAGMA("GCC optimize(\"Og\")")
#endif
FMT_BEGIN_NAMESPACE
+FMT_MODULE_EXPORT_BEGIN
// Implementations of enable_if_t and other metafunctions for older systems.
-template <bool B, class T = void>
+template <bool B, typename T = void>
using enable_if_t = typename std::enable_if<B, T>::type;
-template <bool B, class T, class F>
+template <bool B, typename T, typename F>
using conditional_t = typename std::conditional<B, T, F>::type;
template <bool B> using bool_constant = std::integral_constant<bool, B>;
template <typename T>
using remove_reference_t = typename std::remove_reference<T>::type;
template <typename T>
-using remove_const_t = typename std::remove_const<T>::type;
-template <typename T>
using remove_cvref_t = typename std::remove_cv<remove_reference_t<T>>::type;
template <typename T> struct type_identity { using type = T; };
template <typename T> using type_identity_t = typename type_identity<T>::type;
-struct monostate {};
+struct monostate {
+ constexpr monostate() {}
+};
+
+// Suppress "unused variable" warnings with the method described in
+// https://herbsutter.com/2009/10/18/mailbag-shutting-up-compiler-warnings/.
+// (void)var does not work on many Intel compilers.
+template <typename... T> FMT_CONSTEXPR void ignore_unused(const T&...) {}
// An enable_if helper to be used in template parameters which results in much
// shorter symbols: https://godbolt.org/z/sWw4vP. Extra parentheses are needed
// to workaround a bug in MSVC 2019 (see #1140 and #1186).
-#define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0
+#ifdef FMT_DOC
+# define FMT_ENABLE_IF(...)
+#else
+# define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0
+#endif
+
+FMT_BEGIN_DETAIL_NAMESPACE
-namespace detail {
+constexpr FMT_INLINE auto is_constant_evaluated() FMT_NOEXCEPT -> bool {
+#ifdef __cpp_lib_is_constant_evaluated
+ return std::is_constant_evaluated();
+#else
+ return false;
+#endif
+}
-// A helper function to suppress "conditional expression is constant" warnings.
-template <typename T> constexpr T const_check(T value) { return value; }
+// A function to suppress "conditional expression is constant" warnings.
+template <typename T> constexpr auto const_check(T value) -> T { return value; }
FMT_NORETURN FMT_API void assert_fail(const char* file, int line,
const char* message);
#ifndef FMT_ASSERT
# ifdef NDEBUG
// FMT_ASSERT is not empty to avoid -Werror=empty-body.
-# define FMT_ASSERT(condition, message) ((void)0)
+# define FMT_ASSERT(condition, message) \
+ ::fmt::ignore_unused((condition), (message))
# else
# define FMT_ASSERT(condition, message) \
((condition) /* void() fails with -Winvalid-constexpr on clang 4.0.1 */ \
# define FMT_USE_INT128 1
using int128_t = __int128_t;
using uint128_t = __uint128_t;
+template <typename T> inline auto convert_for_visit(T value) -> T {
+ return value;
+}
#else
# define FMT_USE_INT128 0
#endif
#if !FMT_USE_INT128
-struct int128_t {};
-struct uint128_t {};
+enum class int128_t {};
+enum class uint128_t {};
+// Reduce template instantiations.
+template <typename T> inline auto convert_for_visit(T) -> monostate {
+ return {};
+}
#endif
// Casts a nonnegative integer to unsigned.
template <typename Int>
-FMT_CONSTEXPR typename std::make_unsigned<Int>::type to_unsigned(Int value) {
+FMT_CONSTEXPR auto to_unsigned(Int value) ->
+ typename std::make_unsigned<Int>::type {
FMT_ASSERT(value >= 0, "negative value");
return static_cast<typename std::make_unsigned<Int>::type>(value);
}
-FMT_SUPPRESS_MSC_WARNING(4566) constexpr unsigned char micro[] = "\u00B5";
+FMT_MSC_WARNING(suppress : 4566) constexpr unsigned char micro[] = "\u00B5";
-template <typename Char> constexpr bool is_unicode() {
- return FMT_UNICODE || sizeof(Char) != 1 ||
- (sizeof(micro) == 3 && micro[0] == 0xC2 && micro[1] == 0xB5);
+constexpr auto is_utf8() -> bool {
+ // Avoid buggy sign extensions in MSVC's constant evaluation mode.
+ // https://developercommunity.visualstudio.com/t/C-difference-in-behavior-for-unsigned/1233612
+ using uchar = unsigned char;
+ return FMT_UNICODE || (sizeof(micro) == 3 && uchar(micro[0]) == 0xC2 &&
+ uchar(micro[1]) == 0xB5);
}
-
-#ifdef __cpp_char8_t
-using char8_type = char8_t;
-#else
-enum char8_type : unsigned char {};
-#endif
-} // namespace detail
-
-#ifdef FMT_USE_INTERNAL
-namespace internal = detail; // DEPRECATED
-#endif
+FMT_END_DETAIL_NAMESPACE
/**
An implementation of ``std::basic_string_view`` for pre-C++17. It provides a
the size with ``std::char_traits<Char>::length``.
\endrst
*/
-#if __cplusplus >= 201703L // C++17's char_traits::length() is constexpr.
- FMT_CONSTEXPR
-#endif
- basic_string_view(const Char* s)
- : data_(s), size_(std::char_traits<Char>::length(s)) {}
+ FMT_CONSTEXPR_CHAR_TRAITS
+ FMT_INLINE
+ basic_string_view(const Char* s) : data_(s) {
+ if (detail::const_check(std::is_same<Char, char>::value &&
+ !detail::is_constant_evaluated()))
+ size_ = std::strlen(reinterpret_cast<const char*>(s));
+ else
+ size_ = std::char_traits<Char>::length(s);
+ }
/** Constructs a string reference from a ``std::basic_string`` object. */
template <typename Traits, typename Alloc>
size_(s.size()) {}
/** Returns a pointer to the string data. */
- constexpr const Char* data() const { return data_; }
+ constexpr auto data() const -> const Char* { return data_; }
/** Returns the string size. */
- constexpr size_t size() const { return size_; }
+ constexpr auto size() const -> size_t { return size_; }
- constexpr iterator begin() const { return data_; }
- constexpr iterator end() const { return data_ + size_; }
+ constexpr auto begin() const -> iterator { return data_; }
+ constexpr auto end() const -> iterator { return data_ + size_; }
- constexpr const Char& operator[](size_t pos) const { return data_[pos]; }
+ constexpr auto operator[](size_t pos) const -> const Char& {
+ return data_[pos];
+ }
FMT_CONSTEXPR void remove_prefix(size_t n) {
data_ += n;
}
// Lexicographically compare this string reference to other.
- int compare(basic_string_view other) const {
+ FMT_CONSTEXPR_CHAR_TRAITS auto compare(basic_string_view other) const -> int {
size_t str_size = size_ < other.size_ ? size_ : other.size_;
int result = std::char_traits<Char>::compare(data_, other.data_, str_size);
if (result == 0)
return result;
}
- friend bool operator==(basic_string_view lhs, basic_string_view rhs) {
+ FMT_CONSTEXPR_CHAR_TRAITS friend auto operator==(basic_string_view lhs,
+ basic_string_view rhs)
+ -> bool {
return lhs.compare(rhs) == 0;
}
- friend bool operator!=(basic_string_view lhs, basic_string_view rhs) {
+ friend auto operator!=(basic_string_view lhs, basic_string_view rhs) -> bool {
return lhs.compare(rhs) != 0;
}
- friend bool operator<(basic_string_view lhs, basic_string_view rhs) {
+ friend auto operator<(basic_string_view lhs, basic_string_view rhs) -> bool {
return lhs.compare(rhs) < 0;
}
- friend bool operator<=(basic_string_view lhs, basic_string_view rhs) {
+ friend auto operator<=(basic_string_view lhs, basic_string_view rhs) -> bool {
return lhs.compare(rhs) <= 0;
}
- friend bool operator>(basic_string_view lhs, basic_string_view rhs) {
+ friend auto operator>(basic_string_view lhs, basic_string_view rhs) -> bool {
return lhs.compare(rhs) > 0;
}
- friend bool operator>=(basic_string_view lhs, basic_string_view rhs) {
+ friend auto operator>=(basic_string_view lhs, basic_string_view rhs) -> bool {
return lhs.compare(rhs) >= 0;
}
};
using string_view = basic_string_view<char>;
-using wstring_view = basic_string_view<wchar_t>;
/** Specifies if ``T`` is a character type. Can be specialized by users. */
template <typename T> struct is_char : std::false_type {};
template <> struct is_char<char> : std::true_type {};
-template <> struct is_char<wchar_t> : std::true_type {};
-template <> struct is_char<detail::char8_type> : std::true_type {};
-template <> struct is_char<char16_t> : std::true_type {};
-template <> struct is_char<char32_t> : std::true_type {};
-
-/**
- \rst
- Returns a string view of `s`. In order to add custom string type support to
- {fmt} provide an overload of `to_string_view` for it in the same namespace as
- the type for the argument-dependent lookup to work.
-
- **Example**::
- namespace my_ns {
- inline string_view to_string_view(const my_string& s) {
- return {s.data(), s.length()};
- }
- }
- std::string message = fmt::format(my_string("The answer is {}"), 42);
- \endrst
- */
+// Returns a string view of `s`.
template <typename Char, FMT_ENABLE_IF(is_char<Char>::value)>
-inline basic_string_view<Char> to_string_view(const Char* s) {
+FMT_INLINE auto to_string_view(const Char* s) -> basic_string_view<Char> {
return s;
}
-
template <typename Char, typename Traits, typename Alloc>
-inline basic_string_view<Char> to_string_view(
- const std::basic_string<Char, Traits, Alloc>& s) {
+inline auto to_string_view(const std::basic_string<Char, Traits, Alloc>& s)
+ -> basic_string_view<Char> {
return s;
}
-
template <typename Char>
-inline basic_string_view<Char> to_string_view(basic_string_view<Char> s) {
+constexpr auto to_string_view(basic_string_view<Char> s)
+ -> basic_string_view<Char> {
return s;
}
-
template <typename Char,
FMT_ENABLE_IF(!std::is_empty<detail::std_string_view<Char>>::value)>
-inline basic_string_view<Char> to_string_view(detail::std_string_view<Char> s) {
+inline auto to_string_view(detail::std_string_view<Char> s)
+ -> basic_string_view<Char> {
return s;
}
struct is_compile_string : std::is_base_of<compile_string, S> {};
template <typename S, FMT_ENABLE_IF(is_compile_string<S>::value)>
-constexpr basic_string_view<typename S::char_type> to_string_view(const S& s) {
- return s;
+constexpr auto to_string_view(const S& s)
+ -> basic_string_view<typename S::char_type> {
+ return basic_string_view<typename S::char_type>(s);
}
-namespace detail {
+FMT_BEGIN_DETAIL_NAMESPACE
+
void to_string_view(...);
-using fmt::v7::to_string_view;
+using fmt::v8::to_string_view;
// Specifies whether S is a string type convertible to fmt::basic_string_view.
// It should be a constexpr function but MSVC 2017 fails to compile it in
// This function is intentionally not constexpr to give a compile-time error.
FMT_NORETURN FMT_API void on_error(const char* message);
};
-} // namespace detail
+FMT_END_DETAIL_NAMESPACE
/** String's character type. */
template <typename S> using char_t = typename detail::char_t_impl<S>::type;
\rst
Parsing context consisting of a format string range being parsed and an
argument counter for automatic indexing.
-
- You can use one of the following type aliases for common character types:
-
- +-----------------------+-------------------------------------+
- | Type | Definition |
- +=======================+=====================================+
- | format_parse_context | basic_format_parse_context<char> |
- +-----------------------+-------------------------------------+
- | wformat_parse_context | basic_format_parse_context<wchar_t> |
- +-----------------------+-------------------------------------+
+ You can use the ``format_parse_context`` type alias for ``char`` instead.
\endrst
*/
template <typename Char, typename ErrorHandler = detail::error_handler>
Returns an iterator to the beginning of the format string range being
parsed.
*/
- constexpr iterator begin() const FMT_NOEXCEPT { return format_str_.begin(); }
+ constexpr auto begin() const FMT_NOEXCEPT -> iterator {
+ return format_str_.begin();
+ }
/**
Returns an iterator past the end of the format string range being parsed.
*/
- constexpr iterator end() const FMT_NOEXCEPT { return format_str_.end(); }
+ constexpr auto end() const FMT_NOEXCEPT -> iterator {
+ return format_str_.end();
+ }
/** Advances the begin iterator to ``it``. */
FMT_CONSTEXPR void advance_to(iterator it) {
Reports an error if using the manual argument indexing; otherwise returns
the next argument index and switches to the automatic indexing.
*/
- FMT_CONSTEXPR int next_arg_id() {
+ FMT_CONSTEXPR auto next_arg_id() -> int {
// Don't check if the argument id is valid to avoid overhead and because it
// will be checked during formatting anyway.
if (next_arg_id_ >= 0) return next_arg_id_++;
ErrorHandler::on_error(message);
}
- constexpr ErrorHandler error_handler() const { return *this; }
+ constexpr auto error_handler() const -> ErrorHandler { return *this; }
};
using format_parse_context = basic_format_parse_context<char>;
-using wformat_parse_context = basic_format_parse_context<wchar_t>;
template <typename Context> class basic_format_arg;
template <typename Context> class basic_format_args;
template <typename Char>
struct is_contiguous<std::basic_string<Char>> : std::true_type {};
-namespace detail {
+class appender;
+
+FMT_BEGIN_DETAIL_NAMESPACE
// Extracts a reference to the container from back_insert_iterator.
template <typename Container>
-inline Container& get_container(std::back_insert_iterator<Container> it) {
+inline auto get_container(std::back_insert_iterator<Container> it)
+ -> Container& {
using bi_iterator = std::back_insert_iterator<Container>;
struct accessor : bi_iterator {
accessor(bi_iterator iter) : bi_iterator(iter) {}
return *accessor(it).container;
}
+template <typename Char, typename InputIt, typename OutputIt>
+FMT_CONSTEXPR auto copy_str(InputIt begin, InputIt end, OutputIt out)
+ -> OutputIt {
+ while (begin != end) *out++ = static_cast<Char>(*begin++);
+ return out;
+}
+
+template <typename Char, FMT_ENABLE_IF(std::is_same<Char, char>::value)>
+FMT_CONSTEXPR auto copy_str(const Char* begin, const Char* end, Char* out)
+ -> Char* {
+ if (is_constant_evaluated())
+ return copy_str<Char, const Char*, Char*>(begin, end, out);
+ auto size = to_unsigned(end - begin);
+ memcpy(out, begin, size);
+ return out + size;
+}
+
/**
\rst
A contiguous memory buffer with an optional growing ability. It is an internal
protected:
// Don't initialize ptr_ since it is not accessed to save a few cycles.
- FMT_SUPPRESS_MSC_WARNING(26495)
+ FMT_MSC_WARNING(suppress : 26495)
buffer(size_t sz) FMT_NOEXCEPT : size_(sz), capacity_(sz) {}
buffer(T* p = nullptr, size_t sz = 0, size_t cap = 0) FMT_NOEXCEPT
capacity_(cap) {}
~buffer() = default;
+ buffer(buffer&&) = default;
/** Sets the buffer data and capacity. */
void set(T* buf_data, size_t buf_capacity) FMT_NOEXCEPT {
buffer(const buffer&) = delete;
void operator=(const buffer&) = delete;
- T* begin() FMT_NOEXCEPT { return ptr_; }
- T* end() FMT_NOEXCEPT { return ptr_ + size_; }
+ auto begin() FMT_NOEXCEPT -> T* { return ptr_; }
+ auto end() FMT_NOEXCEPT -> T* { return ptr_ + size_; }
- const T* begin() const FMT_NOEXCEPT { return ptr_; }
- const T* end() const FMT_NOEXCEPT { return ptr_ + size_; }
+ auto begin() const FMT_NOEXCEPT -> const T* { return ptr_; }
+ auto end() const FMT_NOEXCEPT -> const T* { return ptr_ + size_; }
/** Returns the size of this buffer. */
- size_t size() const FMT_NOEXCEPT { return size_; }
+ auto size() const FMT_NOEXCEPT -> size_t { return size_; }
/** Returns the capacity of this buffer. */
- size_t capacity() const FMT_NOEXCEPT { return capacity_; }
+ auto capacity() const FMT_NOEXCEPT -> size_t { return capacity_; }
/** Returns a pointer to the buffer data. */
- T* data() FMT_NOEXCEPT { return ptr_; }
+ auto data() FMT_NOEXCEPT -> T* { return ptr_; }
/** Returns a pointer to the buffer data. */
- const T* data() const FMT_NOEXCEPT { return ptr_; }
+ auto data() const FMT_NOEXCEPT -> const T* { return ptr_; }
/** Clears this buffer. */
void clear() { size_ = 0; }
/** Appends data to the end of the buffer. */
template <typename U> void append(const U* begin, const U* end);
- template <typename I> T& operator[](I index) { return ptr_[index]; }
- template <typename I> const T& operator[](I index) const {
+ template <typename I> auto operator[](I index) -> T& { return ptr_[index]; }
+ template <typename I> auto operator[](I index) const -> const T& {
return ptr_[index];
}
};
struct buffer_traits {
explicit buffer_traits(size_t) {}
- size_t count() const { return 0; }
- size_t limit(size_t size) { return size; }
+ auto count() const -> size_t { return 0; }
+ auto limit(size_t size) -> size_t { return size; }
};
class fixed_buffer_traits {
public:
explicit fixed_buffer_traits(size_t limit) : limit_(limit) {}
- size_t count() const { return count_; }
- size_t limit(size_t size) {
+ auto count() const -> size_t { return count_; }
+ auto limit(size_t size) -> size_t {
size_t n = limit_ > count_ ? limit_ - count_ : 0;
count_ += size;
return size < n ? size : n;
void grow(size_t) final FMT_OVERRIDE {
if (this->size() == buffer_size) flush();
}
- void flush();
+
+ void flush() {
+ auto size = this->size();
+ this->clear();
+ out_ = copy_str<T>(data_, data_ + this->limit(size), out_);
+ }
public:
explicit iterator_buffer(OutputIt out, size_t n = buffer_size)
- : Traits(n),
- buffer<T>(data_, 0, buffer_size),
- out_(out) {}
+ : Traits(n), buffer<T>(data_, 0, buffer_size), out_(out) {}
+ iterator_buffer(iterator_buffer&& other)
+ : Traits(other), buffer<T>(data_, 0, buffer_size), out_(other.out_) {}
~iterator_buffer() { flush(); }
- OutputIt out() {
+ auto out() -> OutputIt {
flush();
return out_;
}
- size_t count() const { return Traits::count() + this->size(); }
+ auto count() const -> size_t { return Traits::count() + this->size(); }
};
template <typename T> class iterator_buffer<T*, T> final : public buffer<T> {
public:
explicit iterator_buffer(T* out, size_t = 0) : buffer<T>(out, 0, ~size_t()) {}
- T* out() { return &*this->end(); }
+ auto out() -> T* { return &*this->end(); }
};
// A buffer that writes to a container with the contiguous storage.
: buffer<typename Container::value_type>(c.size()), container_(c) {}
explicit iterator_buffer(std::back_insert_iterator<Container> out, size_t = 0)
: iterator_buffer(get_container(out)) {}
- std::back_insert_iterator<Container> out() {
+ auto out() -> std::back_insert_iterator<Container> {
return std::back_inserter(container_);
}
};
public:
counting_buffer() : buffer<T>(data_, 0, buffer_size) {}
- size_t count() { return count_ + this->size(); }
+ auto count() -> size_t { return count_ + this->size(); }
};
-// An output iterator that appends to the buffer.
-// It is used to reduce symbol sizes for the common case.
template <typename T>
-class buffer_appender : public std::back_insert_iterator<buffer<T>> {
- using base = std::back_insert_iterator<buffer<T>>;
-
- public:
- explicit buffer_appender(buffer<T>& buf) : base(buf) {}
- buffer_appender(base it) : base(it) {}
-
- buffer_appender& operator++() {
- base::operator++();
- return *this;
- }
-
- buffer_appender operator++(int) {
- buffer_appender tmp = *this;
- ++*this;
- return tmp;
- }
-};
+using buffer_appender = conditional_t<std::is_same<T, char>::value, appender,
+ std::back_insert_iterator<buffer<T>>>;
-// Maps an output iterator into a buffer.
+// Maps an output iterator to a buffer.
template <typename T, typename OutputIt>
-iterator_buffer<OutputIt, T> get_buffer(OutputIt);
-template <typename T> buffer<T>& get_buffer(buffer_appender<T>);
-
-template <typename OutputIt> OutputIt get_buffer_init(OutputIt out) {
- return out;
-}
-template <typename T> buffer<T>& get_buffer_init(buffer_appender<T> out) {
- return get_container(out);
+auto get_buffer(OutputIt out) -> iterator_buffer<OutputIt, T> {
+ return iterator_buffer<OutputIt, T>(out);
}
template <typename Buffer>
auto get_iterator(Buffer& buf) -> decltype(buf.out()) {
return buf.out();
}
-template <typename T> buffer_appender<T> get_iterator(buffer<T>& buf) {
+template <typename T> auto get_iterator(buffer<T>& buf) -> buffer_appender<T> {
return buffer_appender<T>(buf);
}
};
// Specifies if T has an enabled fallback_formatter specialization.
-template <typename T, typename Context>
+template <typename T, typename Char>
using has_fallback_formatter =
- std::is_constructible<fallback_formatter<T, typename Context::char_type>>;
+ std::is_constructible<fallback_formatter<T, Char>>;
struct view {};
template <typename... U>
arg_data(const U&... init) : args_{T(named_args_, NUM_NAMED_ARGS), init...} {}
arg_data(const arg_data& other) = delete;
- const T* args() const { return args_ + 1; }
- named_arg_info<Char>* named_args() { return named_args_; }
+ auto args() const -> const T* { return args_ + 1; }
+ auto named_args() -> named_arg_info<Char>* { return named_args_; }
};
template <typename T, typename Char, size_t NUM_ARGS>
T args_[NUM_ARGS != 0 ? NUM_ARGS : +1];
template <typename... U>
- FMT_INLINE arg_data(const U&... init) : args_{init...} {}
- FMT_INLINE const T* args() const { return args_; }
- FMT_INLINE std::nullptr_t named_args() { return nullptr; }
+ FMT_CONSTEXPR FMT_INLINE arg_data(const U&... init) : args_{init...} {}
+ FMT_CONSTEXPR FMT_INLINE auto args() const -> const T* { return args_; }
+ FMT_CONSTEXPR FMT_INLINE auto named_args() -> std::nullptr_t {
+ return nullptr;
+ }
};
template <typename Char>
inline void init_named_args(named_arg_info<Char>*, int, int) {}
-template <typename Char, typename T, typename... Tail>
+template <typename T> struct is_named_arg : std::false_type {};
+template <typename T> struct is_statically_named_arg : std::false_type {};
+
+template <typename T, typename Char>
+struct is_named_arg<named_arg<Char, T>> : std::true_type {};
+
+template <typename Char, typename T, typename... Tail,
+ FMT_ENABLE_IF(!is_named_arg<T>::value)>
void init_named_args(named_arg_info<Char>* named_args, int arg_count,
int named_arg_count, const T&, const Tail&... args) {
init_named_args(named_args, arg_count + 1, named_arg_count, args...);
}
-template <typename Char, typename T, typename... Tail>
+template <typename Char, typename T, typename... Tail,
+ FMT_ENABLE_IF(is_named_arg<T>::value)>
void init_named_args(named_arg_info<Char>* named_args, int arg_count,
- int named_arg_count, const named_arg<Char, T>& arg,
- const Tail&... args) {
+ int named_arg_count, const T& arg, const Tail&... args) {
named_args[named_arg_count++] = {arg.name, arg_count};
init_named_args(named_args, arg_count + 1, named_arg_count, args...);
}
template <typename... Args>
-FMT_INLINE void init_named_args(std::nullptr_t, int, int, const Args&...) {}
-
-template <typename T> struct is_named_arg : std::false_type {};
-
-template <typename T, typename Char>
-struct is_named_arg<named_arg<Char, T>> : std::true_type {};
+FMT_CONSTEXPR FMT_INLINE void init_named_args(std::nullptr_t, int, int,
+ const Args&...) {}
-template <bool B = false> constexpr size_t count() { return B ? 1 : 0; }
-template <bool B1, bool B2, bool... Tail> constexpr size_t count() {
+template <bool B = false> constexpr auto count() -> size_t { return B ? 1 : 0; }
+template <bool B1, bool B2, bool... Tail> constexpr auto count() -> size_t {
return (B1 ? 1 : 0) + count<B2, Tail...>();
}
-template <typename... Args> constexpr size_t count_named_args() {
+template <typename... Args> constexpr auto count_named_args() -> size_t {
return count<is_named_arg<Args>::value...>();
}
using char_type = typename Context::char_type;
union {
+ monostate no_value;
int int_value;
unsigned uint_value;
long long long_long_value;
named_arg_value<char_type> named_args;
};
- constexpr FMT_INLINE value(int val = 0) : int_value(val) {}
+ constexpr FMT_INLINE value() : no_value() {}
+ constexpr FMT_INLINE value(int val) : int_value(val) {}
constexpr FMT_INLINE value(unsigned val) : uint_value(val) {}
- FMT_INLINE value(long long val) : long_long_value(val) {}
- FMT_INLINE value(unsigned long long val) : ulong_long_value(val) {}
+ constexpr FMT_INLINE value(long long val) : long_long_value(val) {}
+ constexpr FMT_INLINE value(unsigned long long val) : ulong_long_value(val) {}
FMT_INLINE value(int128_t val) : int128_value(val) {}
FMT_INLINE value(uint128_t val) : uint128_value(val) {}
FMT_INLINE value(float val) : float_value(val) {}
FMT_INLINE value(double val) : double_value(val) {}
FMT_INLINE value(long double val) : long_double_value(val) {}
- FMT_INLINE value(bool val) : bool_value(val) {}
- FMT_INLINE value(char_type val) : char_value(val) {}
- FMT_INLINE value(const char_type* val) { string.data = val; }
- FMT_INLINE value(basic_string_view<char_type> val) {
+ constexpr FMT_INLINE value(bool val) : bool_value(val) {}
+ constexpr FMT_INLINE value(char_type val) : char_value(val) {}
+ FMT_CONSTEXPR FMT_INLINE value(const char_type* val) {
+ string.data = val;
+ if (is_constant_evaluated()) string.size = {};
+ }
+ FMT_CONSTEXPR FMT_INLINE value(basic_string_view<char_type> val) {
string.data = val.data();
string.size = val.size();
}
FMT_INLINE value(const named_arg_info<char_type>* args, size_t size)
: named_args{args, size} {}
- template <typename T> FMT_INLINE value(const T& val) {
+ template <typename T> FMT_CONSTEXPR FMT_INLINE value(const T& val) {
custom.value = &val;
// Get the formatter type through the context to allow different contexts
// have different extension points, e.g. `formatter<T>` for `format` and
};
template <typename Context, typename T>
-FMT_CONSTEXPR basic_format_arg<Context> make_arg(const T& value);
+FMT_CONSTEXPR auto make_arg(const T& value) -> basic_format_arg<Context>;
// To minimize the number of types we need to deal with, long is translated
// either to int or to long long depending on its size.
template <typename Context> struct arg_mapper {
using char_type = typename Context::char_type;
- FMT_CONSTEXPR int map(signed char val) { return val; }
- FMT_CONSTEXPR unsigned map(unsigned char val) { return val; }
- FMT_CONSTEXPR int map(short val) { return val; }
- FMT_CONSTEXPR unsigned map(unsigned short val) { return val; }
- FMT_CONSTEXPR int map(int val) { return val; }
- FMT_CONSTEXPR unsigned map(unsigned val) { return val; }
- FMT_CONSTEXPR long_type map(long val) { return val; }
- FMT_CONSTEXPR ulong_type map(unsigned long val) { return val; }
- FMT_CONSTEXPR long long map(long long val) { return val; }
- FMT_CONSTEXPR unsigned long long map(unsigned long long val) { return val; }
- FMT_CONSTEXPR int128_t map(int128_t val) { return val; }
- FMT_CONSTEXPR uint128_t map(uint128_t val) { return val; }
- FMT_CONSTEXPR bool map(bool val) { return val; }
+ FMT_CONSTEXPR FMT_INLINE auto map(signed char val) -> int { return val; }
+ FMT_CONSTEXPR FMT_INLINE auto map(unsigned char val) -> unsigned {
+ return val;
+ }
+ FMT_CONSTEXPR FMT_INLINE auto map(short val) -> int { return val; }
+ FMT_CONSTEXPR FMT_INLINE auto map(unsigned short val) -> unsigned {
+ return val;
+ }
+ FMT_CONSTEXPR FMT_INLINE auto map(int val) -> int { return val; }
+ FMT_CONSTEXPR FMT_INLINE auto map(unsigned val) -> unsigned { return val; }
+ FMT_CONSTEXPR FMT_INLINE auto map(long val) -> long_type { return val; }
+ FMT_CONSTEXPR FMT_INLINE auto map(unsigned long val) -> ulong_type {
+ return val;
+ }
+ FMT_CONSTEXPR FMT_INLINE auto map(long long val) -> long long { return val; }
+ FMT_CONSTEXPR FMT_INLINE auto map(unsigned long long val)
+ -> unsigned long long {
+ return val;
+ }
+ FMT_CONSTEXPR FMT_INLINE auto map(int128_t val) -> int128_t { return val; }
+ FMT_CONSTEXPR FMT_INLINE auto map(uint128_t val) -> uint128_t { return val; }
+ FMT_CONSTEXPR FMT_INLINE auto map(bool val) -> bool { return val; }
template <typename T, FMT_ENABLE_IF(is_char<T>::value)>
- FMT_CONSTEXPR char_type map(T val) {
+ FMT_CONSTEXPR FMT_INLINE auto map(T val) -> char_type {
static_assert(
std::is_same<T, char>::value || std::is_same<T, char_type>::value,
"mixing character types is disallowed");
return val;
}
- FMT_CONSTEXPR float map(float val) { return val; }
- FMT_CONSTEXPR double map(double val) { return val; }
- FMT_CONSTEXPR long double map(long double val) { return val; }
+ FMT_CONSTEXPR FMT_INLINE auto map(float val) -> float { return val; }
+ FMT_CONSTEXPR FMT_INLINE auto map(double val) -> double { return val; }
+ FMT_CONSTEXPR FMT_INLINE auto map(long double val) -> long double {
+ return val;
+ }
- FMT_CONSTEXPR const char_type* map(char_type* val) { return val; }
- FMT_CONSTEXPR const char_type* map(const char_type* val) { return val; }
+ FMT_CONSTEXPR FMT_INLINE auto map(char_type* val) -> const char_type* {
+ return val;
+ }
+ FMT_CONSTEXPR FMT_INLINE auto map(const char_type* val) -> const char_type* {
+ return val;
+ }
template <typename T, FMT_ENABLE_IF(is_string<T>::value)>
- FMT_CONSTEXPR basic_string_view<char_type> map(const T& val) {
+ FMT_CONSTEXPR FMT_INLINE auto map(const T& val)
+ -> basic_string_view<char_type> {
static_assert(std::is_same<char_type, char_t<T>>::value,
"mixing character types is disallowed");
return to_string_view(val);
FMT_ENABLE_IF(
std::is_constructible<basic_string_view<char_type>, T>::value &&
!is_string<T>::value && !has_formatter<T, Context>::value &&
- !has_fallback_formatter<T, Context>::value)>
- FMT_CONSTEXPR basic_string_view<char_type> map(const T& val) {
+ !has_fallback_formatter<T, char_type>::value)>
+ FMT_CONSTEXPR FMT_INLINE auto map(const T& val)
+ -> basic_string_view<char_type> {
return basic_string_view<char_type>(val);
}
template <
std::is_constructible<std_string_view<char_type>, T>::value &&
!std::is_constructible<basic_string_view<char_type>, T>::value &&
!is_string<T>::value && !has_formatter<T, Context>::value &&
- !has_fallback_formatter<T, Context>::value)>
- FMT_CONSTEXPR basic_string_view<char_type> map(const T& val) {
+ !has_fallback_formatter<T, char_type>::value)>
+ FMT_CONSTEXPR FMT_INLINE auto map(const T& val)
+ -> basic_string_view<char_type> {
return std_string_view<char_type>(val);
}
- FMT_CONSTEXPR const char* map(const signed char* val) {
+ FMT_CONSTEXPR FMT_INLINE auto map(const signed char* val) -> const char* {
static_assert(std::is_same<char_type, char>::value, "invalid string type");
return reinterpret_cast<const char*>(val);
}
- FMT_CONSTEXPR const char* map(const unsigned char* val) {
+ FMT_CONSTEXPR FMT_INLINE auto map(const unsigned char* val) -> const char* {
static_assert(std::is_same<char_type, char>::value, "invalid string type");
return reinterpret_cast<const char*>(val);
}
- FMT_CONSTEXPR const char* map(signed char* val) {
+ FMT_CONSTEXPR FMT_INLINE auto map(signed char* val) -> const char* {
const auto* const_val = val;
return map(const_val);
}
- FMT_CONSTEXPR const char* map(unsigned char* val) {
+ FMT_CONSTEXPR FMT_INLINE auto map(unsigned char* val) -> const char* {
const auto* const_val = val;
return map(const_val);
}
- FMT_CONSTEXPR const void* map(void* val) { return val; }
- FMT_CONSTEXPR const void* map(const void* val) { return val; }
- FMT_CONSTEXPR const void* map(std::nullptr_t val) { return val; }
- template <typename T> FMT_CONSTEXPR int map(const T*) {
+ FMT_CONSTEXPR FMT_INLINE auto map(void* val) -> const void* { return val; }
+ FMT_CONSTEXPR FMT_INLINE auto map(const void* val) -> const void* {
+ return val;
+ }
+ FMT_CONSTEXPR FMT_INLINE auto map(std::nullptr_t val) -> const void* {
+ return val;
+ }
+
+ // We use SFINAE instead of a const T* parameter to avoid conflicting with
+ // the C array overload.
+ template <typename T>
+ FMT_CONSTEXPR auto map(T) -> enable_if_t<std::is_pointer<T>::value, int> {
// Formatting of arbitrary pointers is disallowed. If you want to output
// a pointer cast it to "void *" or "const void *". In particular, this
// forbids formatting of "[const] volatile char *" which is printed as bool
return 0;
}
+ template <typename T, std::size_t N>
+ FMT_CONSTEXPR FMT_INLINE auto map(const T (&values)[N]) -> const T (&)[N] {
+ return values;
+ }
+
template <typename T,
FMT_ENABLE_IF(std::is_enum<T>::value &&
!has_formatter<T, Context>::value &&
- !has_fallback_formatter<T, Context>::value)>
- FMT_CONSTEXPR auto map(const T& val)
+ !has_fallback_formatter<T, char_type>::value)>
+ FMT_CONSTEXPR FMT_INLINE auto map(const T& val)
-> decltype(std::declval<arg_mapper>().map(
static_cast<typename std::underlying_type<T>::type>(val))) {
return map(static_cast<typename std::underlying_type<T>::type>(val));
template <typename T,
FMT_ENABLE_IF(!is_string<T>::value && !is_char<T>::value &&
(has_formatter<T, Context>::value ||
- has_fallback_formatter<T, Context>::value))>
- FMT_CONSTEXPR const T& map(const T& val) {
+ has_fallback_formatter<T, char_type>::value))>
+ FMT_CONSTEXPR FMT_INLINE auto map(const T& val) -> const T& {
return val;
}
- template <typename T>
- FMT_CONSTEXPR auto map(const named_arg<char_type, T>& val)
- -> decltype(std::declval<arg_mapper>().map(val.value)) {
- return map(val.value);
+ template <typename T, FMT_ENABLE_IF(is_named_arg<T>::value)>
+ FMT_CONSTEXPR FMT_INLINE auto map(const T& named_arg)
+ -> decltype(std::declval<arg_mapper>().map(named_arg.value)) {
+ return map(named_arg.value);
}
- unformattable map(...) { return {}; }
+ auto map(...) -> unformattable { return {}; }
};
// A type constant after applying arg_mapper<Context>.
enum { max_packed_args = 62 / packed_arg_bits };
enum : unsigned long long { is_unpacked_bit = 1ULL << 63 };
enum : unsigned long long { has_named_args_bit = 1ULL << 62 };
-} // namespace detail
+
+FMT_END_DETAIL_NAMESPACE
+
+// An output iterator that appends to a buffer.
+// It is used to reduce symbol sizes for the common case.
+class appender : public std::back_insert_iterator<detail::buffer<char>> {
+ using base = std::back_insert_iterator<detail::buffer<char>>;
+
+ template <typename T>
+ friend auto get_buffer(appender out) -> detail::buffer<char>& {
+ return detail::get_container(out);
+ }
+
+ public:
+ using std::back_insert_iterator<detail::buffer<char>>::back_insert_iterator;
+ appender(base it) : base(it) {}
+ using _Unchecked_type = appender; // Mark iterator as checked.
+
+ auto operator++() -> appender& {
+ base::operator++();
+ return *this;
+ }
+
+ auto operator++(int) -> appender {
+ auto tmp = *this;
+ ++*this;
+ return tmp;
+ }
+};
// A formatting argument. It is a trivially copyable/constructible type to
// allow storage in basic_memory_buffer.
detail::type type_;
template <typename ContextType, typename T>
- friend FMT_CONSTEXPR basic_format_arg<ContextType> detail::make_arg(
- const T& value);
+ friend FMT_CONSTEXPR auto detail::make_arg(const T& value)
+ -> basic_format_arg<ContextType>;
template <typename Visitor, typename Ctx>
friend FMT_CONSTEXPR auto visit_format_arg(Visitor&& vis,
return type_ != detail::type::none_type;
}
- detail::type type() const { return type_; }
+ auto type() const -> detail::type { return type_; }
- bool is_integral() const { return detail::is_integral_type(type_); }
- bool is_arithmetic() const { return detail::is_arithmetic_type(type_); }
+ auto is_integral() const -> bool { return detail::is_integral_type(type_); }
+ auto is_arithmetic() const -> bool {
+ return detail::is_arithmetic_type(type_);
+ }
};
/**
\endrst
*/
template <typename Visitor, typename Context>
-FMT_CONSTEXPR_DECL FMT_INLINE auto visit_format_arg(
+FMT_CONSTEXPR FMT_INLINE auto visit_format_arg(
Visitor&& vis, const basic_format_arg<Context>& arg) -> decltype(vis(0)) {
- using char_type = typename Context::char_type;
switch (arg.type_) {
case detail::type::none_type:
break;
return vis(arg.value_.long_long_value);
case detail::type::ulong_long_type:
return vis(arg.value_.ulong_long_value);
-#if FMT_USE_INT128
case detail::type::int128_type:
- return vis(arg.value_.int128_value);
+ return vis(detail::convert_for_visit(arg.value_.int128_value));
case detail::type::uint128_type:
- return vis(arg.value_.uint128_value);
-#else
- case detail::type::int128_type:
- case detail::type::uint128_type:
- break;
-#endif
+ return vis(detail::convert_for_visit(arg.value_.uint128_value));
case detail::type::bool_type:
return vis(arg.value_.bool_value);
case detail::type::char_type:
case detail::type::cstring_type:
return vis(arg.value_.string.data);
case detail::type::string_type:
- return vis(basic_string_view<char_type>(arg.value_.string.data,
- arg.value_.string.size));
+ using sv = basic_string_view<typename Context::char_type>;
+ return vis(sv(arg.value_.string.data, arg.value_.string.size));
case detail::type::pointer_type:
return vis(arg.value_.pointer);
case detail::type::custom_type:
return vis(monostate());
}
-template <typename T> struct formattable : std::false_type {};
+FMT_BEGIN_DETAIL_NAMESPACE
-namespace detail {
+template <typename Char, typename InputIt>
+auto copy_str(InputIt begin, InputIt end, appender out) -> appender {
+ get_container(out).append(begin, end);
+ return out;
+}
+#if FMT_GCC_VERSION && FMT_GCC_VERSION < 500
// A workaround for gcc 4.8 to make void_t work in a SFINAE context.
template <typename... Ts> struct void_t_impl { using type = void; };
template <typename... Ts>
using void_t = typename detail::void_t_impl<Ts...>::type;
+#else
+template <typename...> using void_t = void;
+#endif
template <typename It, typename T, typename Enable = void>
struct is_output_iterator : std::false_type {};
template <typename Container>
struct is_contiguous_back_insert_iterator<std::back_insert_iterator<Container>>
: is_contiguous<Container> {};
-template <typename Char>
-struct is_contiguous_back_insert_iterator<buffer_appender<Char>>
- : std::true_type {};
+template <>
+struct is_contiguous_back_insert_iterator<appender> : std::true_type {};
// A type-erased reference to an std::locale to avoid heavy <locale> include.
class locale_ref {
const void* locale_; // A type-erased pointer to std::locale.
public:
- locale_ref() : locale_(nullptr) {}
+ constexpr locale_ref() : locale_(nullptr) {}
template <typename Locale> explicit locale_ref(const Locale& loc);
explicit operator bool() const FMT_NOEXCEPT { return locale_ != nullptr; }
- template <typename Locale> Locale get() const;
+ template <typename Locale> auto get() const -> Locale;
};
-template <typename> constexpr unsigned long long encode_types() { return 0; }
+template <typename> constexpr auto encode_types() -> unsigned long long {
+ return 0;
+}
template <typename Context, typename Arg, typename... Args>
-constexpr unsigned long long encode_types() {
+constexpr auto encode_types() -> unsigned long long {
return static_cast<unsigned>(mapped_type_constant<Arg, Context>::value) |
(encode_types<Context, Args...>() << packed_arg_bits);
}
template <typename Context, typename T>
-FMT_CONSTEXPR basic_format_arg<Context> make_arg(const T& value) {
+FMT_CONSTEXPR auto make_arg(const T& value) -> basic_format_arg<Context> {
basic_format_arg<Context> arg;
arg.type_ = mapped_type_constant<T, Context>::value;
arg.value_ = arg_mapper<Context>().map(value);
return arg;
}
-template <typename T> int check(unformattable) {
- static_assert(
- formattable<T>(),
- "Cannot format an argument. To make type T formattable provide a "
- "formatter<T> specialization: https://fmt.dev/latest/api.html#udt");
- return 0;
-}
-template <typename T, typename U> inline const U& check(const U& val) {
- return val;
-}
-
// The type template parameter is there to avoid an ODR violation when using
// a fallback formatter in one translation unit and an implicit conversion in
// another (not recommended).
template <bool IS_PACKED, typename Context, type, typename T,
FMT_ENABLE_IF(IS_PACKED)>
-inline value<Context> make_arg(const T& val) {
- return check<T>(arg_mapper<Context>().map(val));
+FMT_CONSTEXPR FMT_INLINE auto make_arg(const T& val) -> value<Context> {
+ const auto& arg = arg_mapper<Context>().map(val);
+ static_assert(
+ !std::is_same<decltype(arg), const unformattable&>::value,
+ "Cannot format an argument. To make type T formattable provide a "
+ "formatter<T> specialization: https://fmt.dev/latest/api.html#udt");
+ return {arg};
}
template <bool IS_PACKED, typename Context, type, typename T,
FMT_ENABLE_IF(!IS_PACKED)>
-inline basic_format_arg<Context> make_arg(const T& value) {
+inline auto make_arg(const T& value) -> basic_format_arg<Context> {
return make_arg<Context>(value);
}
-
-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) {
- return static_cast<const T&>(v);
-}
-
-class dynamic_arg_list {
- // Workaround for clang's -Wweak-vtables. Unlike for regular classes, for
- // templates it doesn't complain about inability to deduce single translation
- // unit for placing vtable. So storage_node_base is made a fake template.
- template <typename = void> struct node {
- virtual ~node() = default;
- std::unique_ptr<node<>> next;
- };
-
- template <typename T> struct typed_node : node<> {
- T value;
-
- template <typename Arg>
- FMT_CONSTEXPR typed_node(const Arg& arg) : value(arg) {}
-
- template <typename Char>
- FMT_CONSTEXPR typed_node(const basic_string_view<Char>& arg)
- : value(arg.data(), arg.size()) {}
- };
-
- std::unique_ptr<node<>> head_;
-
- public:
- template <typename T, typename Arg> const T& push(const Arg& arg) {
- 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_);
- head_ = std::move(new_node);
- return value;
- }
-};
-} // namespace detail
+FMT_END_DETAIL_NAMESPACE
// Formatting context.
template <typename OutputIt, typename Char> class basic_format_context {
using parse_context_type = basic_format_parse_context<Char>;
template <typename T> using formatter_type = formatter<T, char_type>;
+ basic_format_context(basic_format_context&&) = default;
basic_format_context(const basic_format_context&) = delete;
void operator=(const basic_format_context&) = delete;
/**
Constructs a ``basic_format_context`` object. References to the arguments are
stored in the object so make sure they have appropriate lifetimes.
*/
- basic_format_context(OutputIt out,
- basic_format_args<basic_format_context> ctx_args,
- detail::locale_ref loc = detail::locale_ref())
+ constexpr basic_format_context(
+ OutputIt out, basic_format_args<basic_format_context> ctx_args,
+ detail::locale_ref loc = detail::locale_ref())
: out_(out), args_(ctx_args), loc_(loc) {}
- format_arg arg(int id) const { return args_.get(id); }
- format_arg arg(basic_string_view<char_type> name) { return args_.get(name); }
- int arg_id(basic_string_view<char_type> name) { return args_.get_id(name); }
- const basic_format_args<basic_format_context>& args() const { return args_; }
+ constexpr auto arg(int id) const -> format_arg { return args_.get(id); }
+ FMT_CONSTEXPR auto arg(basic_string_view<char_type> name) -> format_arg {
+ return args_.get(name);
+ }
+ FMT_CONSTEXPR auto arg_id(basic_string_view<char_type> name) -> int {
+ return args_.get_id(name);
+ }
+ auto args() const -> const basic_format_args<basic_format_context>& {
+ return args_;
+ }
- detail::error_handler error_handler() { return {}; }
+ FMT_CONSTEXPR auto error_handler() -> detail::error_handler { return {}; }
void on_error(const char* message) { error_handler().on_error(message); }
// Returns an iterator to the beginning of the output range.
- iterator out() { return out_; }
+ FMT_CONSTEXPR auto out() -> iterator { return out_; }
// Advances the begin iterator to ``it``.
void advance_to(iterator it) {
if (!detail::is_back_insert_iterator<iterator>()) out_ = it;
}
- detail::locale_ref locale() { return loc_; }
+ FMT_CONSTEXPR auto locale() -> detail::locale_ref { return loc_; }
};
template <typename Char>
using buffer_context =
basic_format_context<detail::buffer_appender<Char>, Char>;
using format_context = buffer_context<char>;
-using wformat_context = buffer_context<wchar_t>;
// Workaround an alias issue: https://stackoverflow.com/q/62767544/471164.
#define FMT_BUFFER_CONTEXT(Char) \
basic_format_context<detail::buffer_appender<Char>, Char>
+template <typename T, typename Char = char>
+using is_formattable = bool_constant<
+ !std::is_same<decltype(detail::arg_mapper<buffer_context<Char>>().map(
+ std::declval<T>())),
+ detail::unformattable>::value &&
+ !detail::has_fallback_formatter<T, Char>::value>;
+
/**
\rst
An array of references to arguments. It can be implicitly converted into
: 0);
public:
- format_arg_store(const Args&... args)
+ FMT_CONSTEXPR FMT_INLINE format_arg_store(const Args&... args)
:
#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
basic_format_args<Context>(*this),
\endrst
*/
template <typename Context = format_context, typename... Args>
-inline format_arg_store<Context, Args...> make_format_args(
- const Args&... args) {
- return {args...};
-}
-
-/**
- \rst
- Constructs a `~fmt::format_arg_store` object that contains references
- to arguments and can be implicitly converted to `~fmt::format_args`.
- If ``format_str`` is a compile-time string then `make_args_checked` checks
- its validity at compile time.
- \endrst
- */
-template <typename... Args, typename S, typename Char = char_t<S>>
-inline auto make_args_checked(const S& format_str,
- const remove_reference_t<Args>&... args)
- -> format_arg_store<buffer_context<Char>, remove_reference_t<Args>...> {
- static_assert(
- detail::count<(
- std::is_base_of<detail::view, remove_reference_t<Args>>::value &&
- std::is_reference<Args>::value)...>() == 0,
- "passing views as lvalues is disallowed");
- detail::check_format_string<Args...>(format_str);
+constexpr auto make_format_args(const Args&... args)
+ -> format_arg_store<Context, Args...> {
return {args...};
}
/**
\rst
- Returns a named argument to be used in a formatting function. It should only
- be used in a call to a formatting function.
+ Returns a named argument to be used in a formatting function.
+ It should only be used in a call to a formatting function or
+ `dynamic_format_arg_store::push_back`.
**Example**::
\endrst
*/
template <typename Char, typename T>
-inline detail::named_arg<Char, T> arg(const Char* name, const T& arg) {
+inline auto arg(const Char* name, const T& arg) -> detail::named_arg<Char, T> {
static_assert(!detail::is_named_arg<T>(), "nested named arguments");
return {name, arg};
}
/**
\rst
- A dynamic version of `fmt::format_arg_store`.
- It's equipped with a storage to potentially temporary objects which lifetimes
- could be shorter than the format arguments object.
+ A view of a collection of formatting arguments. To avoid lifetime issues it
+ should only be used as a parameter type in type-erased functions such as
+ ``vformat``::
- It can be implicitly converted into `~fmt::basic_format_args` for passing
- into type-erased formatting functions such as `~fmt::vformat`.
+ void vlog(string_view format_str, format_args args); // OK
+ format_args args = make_format_args(42); // Error: dangling reference
\endrst
*/
-template <typename Context>
-class dynamic_format_arg_store
-#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
- // Workaround a GCC template argument substitution bug.
- : public basic_format_args<Context>
-#endif
-{
- private:
- using char_type = typename Context::char_type;
+template <typename Context> class basic_format_args {
+ public:
+ using size_type = int;
+ using format_arg = basic_format_arg<Context>;
- template <typename T> struct need_copy {
- static constexpr detail::type mapped_type =
- detail::mapped_type_constant<T, Context>::value;
-
- enum {
- value = !(detail::is_reference_wrapper<T>::value ||
- std::is_same<T, basic_string_view<char_type>>::value ||
- std::is_same<T, detail::std_string_view<char_type>>::value ||
- (mapped_type != detail::type::cstring_type &&
- mapped_type != detail::type::string_type &&
- mapped_type != detail::type::custom_type))
- };
+ private:
+ // A descriptor that contains information about formatting arguments.
+ // If the number of arguments is less or equal to max_packed_args then
+ // argument types are passed in the descriptor. This reduces binary code size
+ // per formatting function call.
+ unsigned long long desc_;
+ union {
+ // If is_packed() returns true then argument values are stored in values_;
+ // otherwise they are stored in args_. This is done to improve cache
+ // locality and reduce compiled code size since storing larger objects
+ // may require more code (at least on x86-64) even if the same amount of
+ // data is actually copied to stack. It saves ~10% on the bloat test.
+ const detail::value<Context>* values_;
+ const format_arg* args_;
};
- template <typename T>
- using stored_type = conditional_t<detail::is_string<T>::value,
- std::basic_string<char_type>, T>;
-
- // Storage of basic_format_arg must be contiguous.
- std::vector<basic_format_arg<Context>> data_;
- std::vector<detail::named_arg_info<char_type>> named_info_;
-
- // Storage of arguments not fitting into basic_format_arg must grow
- // without relocation because items in data_ refer to it.
- detail::dynamic_arg_list dynamic_args_;
-
- friend class basic_format_args<Context>;
-
- unsigned long long get_types() const {
- return detail::is_unpacked_bit | data_.size() |
- (named_info_.empty()
- ? 0ULL
- : static_cast<unsigned long long>(detail::has_named_args_bit));
+ constexpr auto is_packed() const -> bool {
+ return (desc_ & detail::is_unpacked_bit) == 0;
}
-
- const basic_format_arg<Context>* data() const {
- return named_info_.empty() ? data_.data() : data_.data() + 1;
+ auto has_named_args() const -> bool {
+ return (desc_ & detail::has_named_args_bit) != 0;
}
- template <typename T> void emplace_arg(const T& arg) {
- data_.emplace_back(detail::make_arg<Context>(arg));
+ FMT_CONSTEXPR auto type(int index) const -> detail::type {
+ int shift = index * detail::packed_arg_bits;
+ unsigned int mask = (1 << detail::packed_arg_bits) - 1;
+ return static_cast<detail::type>((desc_ >> shift) & mask);
}
- template <typename T>
- void emplace_arg(const detail::named_arg<char_type, T>& arg) {
- if (named_info_.empty()) {
- constexpr const detail::named_arg_info<char_type>* zero_ptr{nullptr};
- data_.insert(data_.begin(), {zero_ptr, 0});
- }
- data_.emplace_back(detail::make_arg<Context>(detail::unwrap(arg.value)));
- auto pop_one = [](std::vector<basic_format_arg<Context>>* data) {
- data->pop_back();
- };
- std::unique_ptr<std::vector<basic_format_arg<Context>>, decltype(pop_one)>
- guard{&data_, pop_one};
- named_info_.push_back({arg.name, static_cast<int>(data_.size() - 2u)});
- data_[0].value_.named_args = {named_info_.data(), named_info_.size()};
- guard.release();
- }
+ constexpr FMT_INLINE basic_format_args(unsigned long long desc,
+ const detail::value<Context>* values)
+ : desc_(desc), values_(values) {}
+ constexpr basic_format_args(unsigned long long desc, const format_arg* args)
+ : desc_(desc), args_(args) {}
public:
- /**
- \rst
- Adds an argument into the dynamic store for later passing to a formatting
- function.
-
- Note that custom types and string types (but not string views) are copied
- into the store dynamically allocating memory if necessary.
-
- **Example**::
-
- fmt::dynamic_format_arg_store<fmt::format_context> store;
- store.push_back(42);
- store.push_back("abc");
- store.push_back(1.5f);
- std::string result = fmt::vformat("{} and {} and {}", store);
- \endrst
- */
- template <typename T> void push_back(const T& arg) {
- if (detail::const_check(need_copy<T>::value))
- emplace_arg(dynamic_args_.push<stored_type<T>>(arg));
- else
- emplace_arg(detail::unwrap(arg));
- }
-
- /**
- \rst
- Adds a reference to the argument into the dynamic store for later passing to
- a formatting function. Supports named arguments wrapped in
- ``std::reference_wrapper`` via ``std::ref()``/``std::cref()``.
-
- **Example**::
-
- fmt::dynamic_format_arg_store<fmt::format_context> store;
- char str[] = "1234567890";
- store.push_back(std::cref(str));
- int a1_val{42};
- auto a1 = fmt::arg("a1_", a1_val);
- store.push_back(std::cref(a1));
-
- // Changing str affects the output but only for string and custom types.
- str[0] = 'X';
-
- std::string result = fmt::vformat("{} and {a1_}");
- assert(result == "X234567890 and 42");
- \endrst
- */
- template <typename T> void push_back(std::reference_wrapper<T> arg) {
- static_assert(
- detail::is_named_arg<typename std::remove_cv<T>::type>::value ||
- need_copy<T>::value,
- "objects of built-in types and string views are always copied");
- emplace_arg(arg.get());
- }
-
- /**
- Adds named argument into the dynamic store for later passing to a formatting
- function. ``std::reference_wrapper`` is supported to avoid copying of the
- argument.
- */
- template <typename T>
- void push_back(const detail::named_arg<char_type, T>& arg) {
- const char_type* arg_name =
- dynamic_args_.push<std::basic_string<char_type>>(arg.name).c_str();
- if (detail::const_check(need_copy<T>::value)) {
- emplace_arg(
- fmt::arg(arg_name, dynamic_args_.push<stored_type<T>>(arg.value)));
- } else {
- emplace_arg(fmt::arg(arg_name, arg.value));
- }
- }
-
- /** Erase all elements from the store */
- void clear() {
- data_.clear();
- named_info_.clear();
- dynamic_args_ = detail::dynamic_arg_list();
- }
-
- /**
- \rst
- Reserves space to store at least *new_cap* arguments including
- *new_cap_named* named arguments.
- \endrst
- */
- void reserve(size_t new_cap, size_t new_cap_named) {
- FMT_ASSERT(new_cap >= new_cap_named,
- "Set of arguments includes set of named arguments");
- data_.reserve(new_cap);
- named_info_.reserve(new_cap_named);
- }
-};
-
-/**
- \rst
- A view of a collection of formatting arguments. To avoid lifetime issues it
- should only be used as a parameter type in type-erased functions such as
- ``vformat``::
-
- void vlog(string_view format_str, format_args args); // OK
- format_args args = make_format_args(42); // Error: dangling reference
- \endrst
- */
-template <typename Context> class basic_format_args {
- public:
- using size_type = int;
- using format_arg = basic_format_arg<Context>;
-
- private:
- // A descriptor that contains information about formatting arguments.
- // If the number of arguments is less or equal to max_packed_args then
- // argument types are passed in the descriptor. This reduces binary code size
- // per formatting function call.
- unsigned long long desc_;
- union {
- // If is_packed() returns true then argument values are stored in values_;
- // otherwise they are stored in args_. This is done to improve cache
- // locality and reduce compiled code size since storing larger objects
- // may require more code (at least on x86-64) even if the same amount of
- // data is actually copied to stack. It saves ~10% on the bloat test.
- const detail::value<Context>* values_;
- const format_arg* args_;
- };
-
- bool is_packed() const { return (desc_ & detail::is_unpacked_bit) == 0; }
- bool has_named_args() const {
- return (desc_ & detail::has_named_args_bit) != 0;
- }
-
- detail::type type(int index) const {
- int shift = index * detail::packed_arg_bits;
- unsigned int mask = (1 << detail::packed_arg_bits) - 1;
- return static_cast<detail::type>((desc_ >> shift) & mask);
- }
-
- basic_format_args(unsigned long long desc,
- const detail::value<Context>* values)
- : desc_(desc), values_(values) {}
- basic_format_args(unsigned long long desc, const format_arg* args)
- : desc_(desc), args_(args) {}
-
- public:
- basic_format_args() : desc_(0) {}
+ constexpr basic_format_args() : desc_(0), args_(nullptr) {}
/**
\rst
\endrst
*/
template <typename... Args>
- FMT_INLINE basic_format_args(const format_arg_store<Context, Args...>& store)
- : basic_format_args(store.desc, store.data_.args()) {}
+ constexpr FMT_INLINE basic_format_args(
+ const format_arg_store<Context, Args...>& store)
+ : basic_format_args(format_arg_store<Context, Args...>::desc,
+ store.data_.args()) {}
/**
\rst
`~fmt::dynamic_format_arg_store`.
\endrst
*/
- FMT_INLINE basic_format_args(const dynamic_format_arg_store<Context>& store)
+ constexpr FMT_INLINE basic_format_args(
+ const dynamic_format_arg_store<Context>& store)
: basic_format_args(store.get_types(), store.data()) {}
/**
Constructs a `basic_format_args` object from a dynamic set of arguments.
\endrst
*/
- basic_format_args(const format_arg* args, int count)
+ constexpr basic_format_args(const format_arg* args, int count)
: basic_format_args(detail::is_unpacked_bit | detail::to_unsigned(count),
args) {}
/** Returns the argument with the specified id. */
- format_arg get(int id) const {
+ FMT_CONSTEXPR auto get(int id) const -> format_arg {
format_arg arg;
if (!is_packed()) {
if (id < max_size()) arg = args_[id];
return arg;
}
- template <typename Char> format_arg get(basic_string_view<Char> name) const {
+ template <typename Char>
+ auto get(basic_string_view<Char> name) const -> format_arg {
int id = get_id(name);
return id >= 0 ? get(id) : format_arg();
}
- template <typename Char> int get_id(basic_string_view<Char> name) const {
+ template <typename Char>
+ auto get_id(basic_string_view<Char> name) const -> int {
if (!has_named_args()) return -1;
const auto& named_args =
(is_packed() ? values_[-1] : args_[-1].value_).named_args;
return -1;
}
- int max_size() const {
+ auto max_size() const -> int {
unsigned long long max_packed = detail::max_packed_args;
return static_cast<int>(is_packed() ? max_packed
: desc_ & ~detail::is_unpacked_bit);
}
};
-#ifdef FMT_ARM_ABI_COMPATIBILITY
/** An alias to ``basic_format_args<format_context>``. */
-// Separate types would result in shorter symbols but break ABI compatibility
+// A separate type would result in shorter symbols but break ABI compatibility
// between clang and gcc on ARM (#1919).
using format_args = basic_format_args<format_context>;
-using wformat_args = basic_format_args<wformat_context>;
-#else
-// DEPRECATED! These are kept for ABI compatibility.
-// It is a separate type rather than an alias to make symbols readable.
-struct format_args : basic_format_args<format_context> {
- template <typename... Args>
- FMT_INLINE format_args(const Args&... args) : basic_format_args(args...) {}
+
+// We cannot use enum classes as bit fields because of a gcc bug
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414.
+namespace align {
+enum type { none, left, right, center, numeric };
+}
+using align_t = align::type;
+namespace sign {
+enum type { none, minus, plus, space };
+}
+using sign_t = sign::type;
+
+FMT_BEGIN_DETAIL_NAMESPACE
+
+void throw_format_error(const char* message);
+
+// Workaround an array initialization issue in gcc 4.8.
+template <typename Char> struct fill_t {
+ private:
+ enum { max_size = 4 };
+ Char data_[max_size] = {Char(' '), Char(0), Char(0), Char(0)};
+ unsigned char size_ = 1;
+
+ public:
+ FMT_CONSTEXPR void operator=(basic_string_view<Char> s) {
+ auto size = s.size();
+ if (size > max_size) return throw_format_error("invalid fill");
+ for (size_t i = 0; i < size; ++i) data_[i] = s[i];
+ size_ = static_cast<unsigned char>(size);
+ }
+
+ constexpr auto size() const -> size_t { return size_; }
+ constexpr auto data() const -> const Char* { return data_; }
+
+ FMT_CONSTEXPR auto operator[](size_t index) -> Char& { return data_[index]; }
+ FMT_CONSTEXPR auto operator[](size_t index) const -> const Char& {
+ return data_[index];
+ }
+};
+FMT_END_DETAIL_NAMESPACE
+
+// Format specifiers for built-in and string types.
+template <typename Char> struct basic_format_specs {
+ int width;
+ int precision;
+ char type;
+ align_t align : 4;
+ sign_t sign : 3;
+ bool alt : 1; // Alternate form ('#').
+ bool localized : 1;
+ detail::fill_t<Char> fill;
+
+ constexpr basic_format_specs()
+ : width(0),
+ precision(-1),
+ type(0),
+ align(align::none),
+ sign(sign::none),
+ alt(false),
+ localized(false) {}
+};
+
+using format_specs = basic_format_specs<char>;
+
+FMT_BEGIN_DETAIL_NAMESPACE
+
+enum class arg_id_kind { none, index, name };
+
+// An argument reference.
+template <typename Char> struct arg_ref {
+ FMT_CONSTEXPR arg_ref() : kind(arg_id_kind::none), val() {}
+
+ FMT_CONSTEXPR explicit arg_ref(int index)
+ : kind(arg_id_kind::index), val(index) {}
+ FMT_CONSTEXPR explicit arg_ref(basic_string_view<Char> name)
+ : kind(arg_id_kind::name), val(name) {}
+
+ FMT_CONSTEXPR auto operator=(int idx) -> arg_ref& {
+ kind = arg_id_kind::index;
+ val.index = idx;
+ return *this;
+ }
+
+ arg_id_kind kind;
+ union value {
+ FMT_CONSTEXPR value(int id = 0) : index{id} {}
+ FMT_CONSTEXPR value(basic_string_view<Char> n) : name(n) {}
+
+ int index;
+ basic_string_view<Char> name;
+ } val;
+};
+
+// Format specifiers with width and precision resolved at formatting rather
+// than parsing time to allow re-using the same parsed specifiers with
+// different sets of arguments (precompilation of format strings).
+template <typename Char>
+struct dynamic_format_specs : basic_format_specs<Char> {
+ arg_ref<Char> width_ref;
+ arg_ref<Char> precision_ref;
};
-struct wformat_args : basic_format_args<wformat_context> {
- using basic_format_args::basic_format_args;
+
+struct auto_id {};
+
+// A format specifier handler that sets fields in basic_format_specs.
+template <typename Char> class specs_setter {
+ protected:
+ basic_format_specs<Char>& specs_;
+
+ public:
+ explicit FMT_CONSTEXPR specs_setter(basic_format_specs<Char>& specs)
+ : specs_(specs) {}
+
+ FMT_CONSTEXPR specs_setter(const specs_setter& other)
+ : specs_(other.specs_) {}
+
+ FMT_CONSTEXPR void on_align(align_t align) { specs_.align = align; }
+ FMT_CONSTEXPR void on_fill(basic_string_view<Char> fill) {
+ specs_.fill = fill;
+ }
+ FMT_CONSTEXPR void on_sign(sign_t s) { specs_.sign = s; }
+ FMT_CONSTEXPR void on_hash() { specs_.alt = true; }
+ FMT_CONSTEXPR void on_localized() { specs_.localized = true; }
+
+ FMT_CONSTEXPR void on_zero() {
+ if (specs_.align == align::none) specs_.align = align::numeric;
+ specs_.fill[0] = Char('0');
+ }
+
+ FMT_CONSTEXPR void on_width(int width) { specs_.width = width; }
+ FMT_CONSTEXPR void on_precision(int precision) {
+ specs_.precision = precision;
+ }
+ FMT_CONSTEXPR void end_precision() {}
+
+ FMT_CONSTEXPR void on_type(Char type) {
+ specs_.type = static_cast<char>(type);
+ }
};
+
+// Format spec handler that saves references to arguments representing dynamic
+// width and precision to be resolved at formatting time.
+template <typename ParseContext>
+class dynamic_specs_handler
+ : public specs_setter<typename ParseContext::char_type> {
+ public:
+ using char_type = typename ParseContext::char_type;
+
+ FMT_CONSTEXPR dynamic_specs_handler(dynamic_format_specs<char_type>& specs,
+ ParseContext& ctx)
+ : specs_setter<char_type>(specs), specs_(specs), context_(ctx) {}
+
+ FMT_CONSTEXPR dynamic_specs_handler(const dynamic_specs_handler& other)
+ : specs_setter<char_type>(other),
+ specs_(other.specs_),
+ context_(other.context_) {}
+
+ template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) {
+ specs_.width_ref = make_arg_ref(arg_id);
+ }
+
+ template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) {
+ specs_.precision_ref = make_arg_ref(arg_id);
+ }
+
+ FMT_CONSTEXPR void on_error(const char* message) {
+ context_.on_error(message);
+ }
+
+ private:
+ dynamic_format_specs<char_type>& specs_;
+ ParseContext& context_;
+
+ using arg_ref_type = arg_ref<char_type>;
+
+ FMT_CONSTEXPR auto make_arg_ref(int arg_id) -> arg_ref_type {
+ context_.check_arg_id(arg_id);
+ return arg_ref_type(arg_id);
+ }
+
+ FMT_CONSTEXPR auto make_arg_ref(auto_id) -> arg_ref_type {
+ return arg_ref_type(context_.next_arg_id());
+ }
+
+ FMT_CONSTEXPR auto make_arg_ref(basic_string_view<char_type> arg_id)
+ -> arg_ref_type {
+ context_.check_arg_id(arg_id);
+ basic_string_view<char_type> format_str(
+ context_.begin(), to_unsigned(context_.end() - context_.begin()));
+ return arg_ref_type(arg_id);
+ }
+};
+
+template <typename Char> constexpr bool is_ascii_letter(Char c) {
+ return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
+}
+
+// Converts a character to ASCII. Returns a number > 127 on conversion failure.
+template <typename Char, FMT_ENABLE_IF(std::is_integral<Char>::value)>
+constexpr auto to_ascii(Char value) -> Char {
+ return value;
+}
+template <typename Char, FMT_ENABLE_IF(std::is_enum<Char>::value)>
+constexpr auto to_ascii(Char value) ->
+ typename std::underlying_type<Char>::type {
+ return value;
+}
+
+template <typename Char>
+FMT_CONSTEXPR auto code_point_length(const Char* begin) -> int {
+ if (const_check(sizeof(Char) != 1)) return 1;
+ constexpr char lengths[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 3, 3, 4, 0};
+ int len = lengths[static_cast<unsigned char>(*begin) >> 3];
+
+ // Compute the pointer to the next character early so that the next
+ // iteration can start working on the next character. Neither Clang
+ // nor GCC figure out this reordering on their own.
+ return len + !len;
+}
+
+// Return the result via the out param to workaround gcc bug 77539.
+template <bool IS_CONSTEXPR, typename T, typename Ptr = const T*>
+FMT_CONSTEXPR auto find(Ptr first, Ptr last, T value, Ptr& out) -> bool {
+ for (out = first; out != last; ++out) {
+ if (*out == value) return true;
+ }
+ return false;
+}
+
+template <>
+inline auto find<false, char>(const char* first, const char* last, char value,
+ const char*& out) -> bool {
+ out = static_cast<const char*>(
+ std::memchr(first, value, to_unsigned(last - first)));
+ return out != nullptr;
+}
+
+// Parses the range [begin, end) as an unsigned integer. This function assumes
+// that the range is non-empty and the first character is a digit.
+template <typename Char>
+FMT_CONSTEXPR auto parse_nonnegative_int(const Char*& begin, const Char* end,
+ int error_value) noexcept -> int {
+ FMT_ASSERT(begin != end && '0' <= *begin && *begin <= '9', "");
+ unsigned value = 0, prev = 0;
+ auto p = begin;
+ do {
+ prev = value;
+ value = value * 10 + unsigned(*p - '0');
+ ++p;
+ } while (p != end && '0' <= *p && *p <= '9');
+ auto num_digits = p - begin;
+ begin = p;
+ if (num_digits <= std::numeric_limits<int>::digits10)
+ return static_cast<int>(value);
+ // Check for overflow.
+ const unsigned max = to_unsigned((std::numeric_limits<int>::max)());
+ return num_digits == std::numeric_limits<int>::digits10 + 1 &&
+ prev * 10ull + unsigned(p[-1] - '0') <= max
+ ? static_cast<int>(value)
+ : error_value;
+}
+
+// Parses fill and alignment.
+template <typename Char, typename Handler>
+FMT_CONSTEXPR auto parse_align(const Char* begin, const Char* end,
+ Handler&& handler) -> const Char* {
+ FMT_ASSERT(begin != end, "");
+ auto align = align::none;
+ auto p = begin + code_point_length(begin);
+ if (p >= end) p = begin;
+ for (;;) {
+ switch (to_ascii(*p)) {
+ case '<':
+ align = align::left;
+ break;
+ case '>':
+ align = align::right;
+ break;
+ case '^':
+ align = align::center;
+ break;
+ default:
+ break;
+ }
+ if (align != align::none) {
+ if (p != begin) {
+ auto c = *begin;
+ if (c == '{')
+ return handler.on_error("invalid fill character '{'"), begin;
+ handler.on_fill(basic_string_view<Char>(begin, to_unsigned(p - begin)));
+ begin = p + 1;
+ } else
+ ++begin;
+ handler.on_align(align);
+ break;
+ } else if (p == begin) {
+ break;
+ }
+ p = begin;
+ }
+ return begin;
+}
+
+template <typename Char> FMT_CONSTEXPR bool is_name_start(Char c) {
+ return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c;
+}
+
+template <typename Char, typename IDHandler>
+FMT_CONSTEXPR auto do_parse_arg_id(const Char* begin, const Char* end,
+ IDHandler&& handler) -> const Char* {
+ FMT_ASSERT(begin != end, "");
+ Char c = *begin;
+ if (c >= '0' && c <= '9') {
+ int index = 0;
+ if (c != '0')
+ index =
+ parse_nonnegative_int(begin, end, (std::numeric_limits<int>::max)());
+ else
+ ++begin;
+ if (begin == end || (*begin != '}' && *begin != ':'))
+ handler.on_error("invalid format string");
+ else
+ handler(index);
+ return begin;
+ }
+ if (!is_name_start(c)) {
+ handler.on_error("invalid format string");
+ return begin;
+ }
+ auto it = begin;
+ do {
+ ++it;
+ } while (it != end && (is_name_start(c = *it) || ('0' <= c && c <= '9')));
+ handler(basic_string_view<Char>(begin, to_unsigned(it - begin)));
+ return it;
+}
+
+template <typename Char, typename IDHandler>
+FMT_CONSTEXPR FMT_INLINE auto parse_arg_id(const Char* begin, const Char* end,
+ IDHandler&& handler) -> const Char* {
+ Char c = *begin;
+ if (c != '}' && c != ':') return do_parse_arg_id(begin, end, handler);
+ handler();
+ return begin;
+}
+
+template <typename Char, typename Handler>
+FMT_CONSTEXPR auto parse_width(const Char* begin, const Char* end,
+ Handler&& handler) -> const Char* {
+ using detail::auto_id;
+ struct width_adapter {
+ Handler& handler;
+
+ FMT_CONSTEXPR void operator()() { handler.on_dynamic_width(auto_id()); }
+ FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_width(id); }
+ FMT_CONSTEXPR void operator()(basic_string_view<Char> id) {
+ handler.on_dynamic_width(id);
+ }
+ FMT_CONSTEXPR void on_error(const char* message) {
+ if (message) handler.on_error(message);
+ }
+ };
+
+ FMT_ASSERT(begin != end, "");
+ if ('0' <= *begin && *begin <= '9') {
+ int width = parse_nonnegative_int(begin, end, -1);
+ if (width != -1)
+ handler.on_width(width);
+ else
+ handler.on_error("number is too big");
+ } else if (*begin == '{') {
+ ++begin;
+ if (begin != end) begin = parse_arg_id(begin, end, width_adapter{handler});
+ if (begin == end || *begin != '}')
+ return handler.on_error("invalid format string"), begin;
+ ++begin;
+ }
+ return begin;
+}
+
+template <typename Char, typename Handler>
+FMT_CONSTEXPR auto parse_precision(const Char* begin, const Char* end,
+ Handler&& handler) -> const Char* {
+ using detail::auto_id;
+ struct precision_adapter {
+ Handler& handler;
+
+ FMT_CONSTEXPR void operator()() { handler.on_dynamic_precision(auto_id()); }
+ FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_precision(id); }
+ FMT_CONSTEXPR void operator()(basic_string_view<Char> id) {
+ handler.on_dynamic_precision(id);
+ }
+ FMT_CONSTEXPR void on_error(const char* message) {
+ if (message) handler.on_error(message);
+ }
+ };
+
+ ++begin;
+ auto c = begin != end ? *begin : Char();
+ if ('0' <= c && c <= '9') {
+ auto precision = parse_nonnegative_int(begin, end, -1);
+ if (precision != -1)
+ handler.on_precision(precision);
+ else
+ handler.on_error("number is too big");
+ } else if (c == '{') {
+ ++begin;
+ if (begin != end)
+ begin = parse_arg_id(begin, end, precision_adapter{handler});
+ if (begin == end || *begin++ != '}')
+ return handler.on_error("invalid format string"), begin;
+ } else {
+ return handler.on_error("missing precision specifier"), begin;
+ }
+ handler.end_precision();
+ return begin;
+}
+
+// Parses standard format specifiers and sends notifications about parsed
+// components to handler.
+template <typename Char, typename SpecHandler>
+FMT_CONSTEXPR FMT_INLINE auto parse_format_specs(const Char* begin,
+ const Char* end,
+ SpecHandler&& handler)
+ -> const Char* {
+ if (begin + 1 < end && begin[1] == '}' && is_ascii_letter(*begin) &&
+ *begin != 'L') {
+ handler.on_type(*begin++);
+ return begin;
+ }
+
+ if (begin == end) return begin;
+
+ begin = parse_align(begin, end, handler);
+ if (begin == end) return begin;
+
+ // Parse sign.
+ switch (to_ascii(*begin)) {
+ case '+':
+ handler.on_sign(sign::plus);
+ ++begin;
+ break;
+ case '-':
+ handler.on_sign(sign::minus);
+ ++begin;
+ break;
+ case ' ':
+ handler.on_sign(sign::space);
+ ++begin;
+ break;
+ default:
+ break;
+ }
+ if (begin == end) return begin;
+
+ if (*begin == '#') {
+ handler.on_hash();
+ if (++begin == end) return begin;
+ }
+
+ // Parse zero flag.
+ if (*begin == '0') {
+ handler.on_zero();
+ if (++begin == end) return begin;
+ }
+
+ begin = parse_width(begin, end, handler);
+ if (begin == end) return begin;
+
+ // Parse precision.
+ if (*begin == '.') {
+ begin = parse_precision(begin, end, handler);
+ if (begin == end) return begin;
+ }
+
+ if (*begin == 'L') {
+ handler.on_localized();
+ ++begin;
+ }
+
+ // Parse type.
+ if (begin != end && *begin != '}') handler.on_type(*begin++);
+ return begin;
+}
+
+template <typename Char, typename Handler>
+FMT_CONSTEXPR auto parse_replacement_field(const Char* begin, const Char* end,
+ Handler&& handler) -> const Char* {
+ struct id_adapter {
+ Handler& handler;
+ int arg_id;
+
+ FMT_CONSTEXPR void operator()() { arg_id = handler.on_arg_id(); }
+ FMT_CONSTEXPR void operator()(int id) { arg_id = handler.on_arg_id(id); }
+ FMT_CONSTEXPR void operator()(basic_string_view<Char> id) {
+ arg_id = handler.on_arg_id(id);
+ }
+ FMT_CONSTEXPR void on_error(const char* message) {
+ if (message) handler.on_error(message);
+ }
+ };
+
+ ++begin;
+ if (begin == end) return handler.on_error("invalid format string"), end;
+ if (*begin == '}') {
+ handler.on_replacement_field(handler.on_arg_id(), begin);
+ } else if (*begin == '{') {
+ handler.on_text(begin, begin + 1);
+ } else {
+ auto adapter = id_adapter{handler, 0};
+ begin = parse_arg_id(begin, end, adapter);
+ Char c = begin != end ? *begin : Char();
+ if (c == '}') {
+ handler.on_replacement_field(adapter.arg_id, begin);
+ } else if (c == ':') {
+ begin = handler.on_format_specs(adapter.arg_id, begin + 1, end);
+ if (begin == end || *begin != '}')
+ return handler.on_error("unknown format specifier"), end;
+ } else {
+ return handler.on_error("missing '}' in format string"), end;
+ }
+ }
+ return begin + 1;
+}
+
+template <bool IS_CONSTEXPR, typename Char, typename Handler>
+FMT_CONSTEXPR FMT_INLINE void parse_format_string(
+ basic_string_view<Char> format_str, Handler&& handler) {
+ // this is most likely a name-lookup defect in msvc's modules implementation
+ using detail::find;
+
+ auto begin = format_str.data();
+ auto end = begin + format_str.size();
+ if (end - begin < 32) {
+ // Use a simple loop instead of memchr for small strings.
+ const Char* p = begin;
+ while (p != end) {
+ auto c = *p++;
+ if (c == '{') {
+ handler.on_text(begin, p - 1);
+ begin = p = parse_replacement_field(p - 1, end, handler);
+ } else if (c == '}') {
+ if (p == end || *p != '}')
+ return handler.on_error("unmatched '}' in format string");
+ handler.on_text(begin, p);
+ begin = ++p;
+ }
+ }
+ handler.on_text(begin, end);
+ return;
+ }
+ struct writer {
+ FMT_CONSTEXPR void operator()(const Char* pbegin, const Char* pend) {
+ if (pbegin == pend) return;
+ for (;;) {
+ const Char* p = nullptr;
+ if (!find<IS_CONSTEXPR>(pbegin, pend, Char('}'), p))
+ return handler_.on_text(pbegin, pend);
+ ++p;
+ if (p == pend || *p != '}')
+ return handler_.on_error("unmatched '}' in format string");
+ handler_.on_text(pbegin, p);
+ pbegin = p + 1;
+ }
+ }
+ Handler& handler_;
+ } write{handler};
+ while (begin != end) {
+ // Doing two passes with memchr (one for '{' and another for '}') is up to
+ // 2.5x faster than the naive one-pass implementation on big format strings.
+ const Char* p = begin;
+ if (*begin != '{' && !find<IS_CONSTEXPR>(begin + 1, end, Char('{'), p))
+ return write(begin, end);
+ write(begin, p);
+ begin = parse_replacement_field(p, end, handler);
+ }
+}
+
+template <typename T, typename ParseContext>
+FMT_CONSTEXPR auto parse_format_specs(ParseContext& ctx)
+ -> decltype(ctx.begin()) {
+ using char_type = typename ParseContext::char_type;
+ using context = buffer_context<char_type>;
+ using mapped_type = conditional_t<
+ mapped_type_constant<T, context>::value != type::custom_type,
+ decltype(arg_mapper<context>().map(std::declval<const T&>())), T>;
+ auto f = conditional_t<has_formatter<mapped_type, context>::value,
+ formatter<mapped_type, char_type>,
+ fallback_formatter<T, char_type>>();
+ return f.parse(ctx);
+}
+
+// A parse context with extra argument id checks. It is only used at compile
+// time because adding checks at runtime would introduce substantial overhead
+// and would be redundant since argument ids are checked when arguments are
+// retrieved anyway.
+template <typename Char, typename ErrorHandler = error_handler>
+class compile_parse_context
+ : public basic_format_parse_context<Char, ErrorHandler> {
+ private:
+ int num_args_;
+ using base = basic_format_parse_context<Char, ErrorHandler>;
+
+ public:
+ explicit FMT_CONSTEXPR compile_parse_context(
+ basic_string_view<Char> format_str,
+ int num_args = (std::numeric_limits<int>::max)(), ErrorHandler eh = {})
+ : base(format_str, eh), num_args_(num_args) {}
+
+ FMT_CONSTEXPR auto next_arg_id() -> int {
+ int id = base::next_arg_id();
+ if (id >= num_args_) this->on_error("argument not found");
+ return id;
+ }
+
+ FMT_CONSTEXPR void check_arg_id(int id) {
+ base::check_arg_id(id);
+ if (id >= num_args_) this->on_error("argument not found");
+ }
+ using base::check_arg_id;
+};
+
+template <typename ErrorHandler>
+FMT_CONSTEXPR void check_int_type_spec(char spec, ErrorHandler&& eh) {
+ switch (spec) {
+ case 0:
+ case 'd':
+ case 'x':
+ case 'X':
+ case 'b':
+ case 'B':
+ case 'o':
+ case 'c':
+ break;
+ default:
+ eh.on_error("invalid type specifier");
+ break;
+ }
+}
+
+// Checks char specs and returns true if the type spec is char (and not int).
+template <typename Char, typename ErrorHandler = error_handler>
+FMT_CONSTEXPR auto check_char_specs(const basic_format_specs<Char>& specs,
+ ErrorHandler&& eh = {}) -> bool {
+ if (specs.type && specs.type != 'c') {
+ check_int_type_spec(specs.type, eh);
+ return false;
+ }
+ if (specs.align == align::numeric || specs.sign != sign::none || specs.alt)
+ eh.on_error("invalid format specifier for char");
+ return true;
+}
+
+// A floating-point presentation format.
+enum class float_format : unsigned char {
+ general, // General: exponent notation or fixed point based on magnitude.
+ exp, // Exponent notation with the default precision of 6, e.g. 1.2e-3.
+ fixed, // Fixed point with the default precision of 6, e.g. 0.0012.
+ hex
+};
+
+struct float_specs {
+ int precision;
+ float_format format : 8;
+ sign_t sign : 8;
+ bool upper : 1;
+ bool locale : 1;
+ bool binary32 : 1;
+ bool use_grisu : 1;
+ bool showpoint : 1;
+};
+
+template <typename ErrorHandler = error_handler, typename Char>
+FMT_CONSTEXPR auto parse_float_type_spec(const basic_format_specs<Char>& specs,
+ ErrorHandler&& eh = {})
+ -> float_specs {
+ auto result = float_specs();
+ result.showpoint = specs.alt;
+ result.locale = specs.localized;
+ switch (specs.type) {
+ case 0:
+ result.format = float_format::general;
+ break;
+ case 'G':
+ result.upper = true;
+ FMT_FALLTHROUGH;
+ case 'g':
+ result.format = float_format::general;
+ break;
+ case 'E':
+ result.upper = true;
+ FMT_FALLTHROUGH;
+ case 'e':
+ result.format = float_format::exp;
+ result.showpoint |= specs.precision != 0;
+ break;
+ case 'F':
+ result.upper = true;
+ FMT_FALLTHROUGH;
+ case 'f':
+ result.format = float_format::fixed;
+ result.showpoint |= specs.precision != 0;
+ break;
+ case 'A':
+ result.upper = true;
+ FMT_FALLTHROUGH;
+ case 'a':
+ result.format = float_format::hex;
+ break;
+ default:
+ eh.on_error("invalid type specifier");
+ break;
+ }
+ return result;
+}
+
+template <typename Char, typename ErrorHandler = error_handler>
+FMT_CONSTEXPR auto check_cstring_type_spec(Char spec, ErrorHandler&& eh = {})
+ -> bool {
+ if (spec == 0 || spec == 's') return true;
+ if (spec != 'p') eh.on_error("invalid type specifier");
+ return false;
+}
+
+template <typename Char, typename ErrorHandler = error_handler>
+FMT_CONSTEXPR void check_string_type_spec(Char spec, ErrorHandler&& eh = {}) {
+ if (spec != 0 && spec != 's') eh.on_error("invalid type specifier");
+}
+
+template <typename Char, typename ErrorHandler>
+FMT_CONSTEXPR void check_pointer_type_spec(Char spec, ErrorHandler&& eh) {
+ if (spec != 0 && spec != 'p') eh.on_error("invalid type specifier");
+}
+
+// A parse_format_specs handler that checks if specifiers are consistent with
+// the argument type.
+template <typename Handler> class specs_checker : public Handler {
+ private:
+ detail::type arg_type_;
+
+ FMT_CONSTEXPR void require_numeric_argument() {
+ if (!is_arithmetic_type(arg_type_))
+ this->on_error("format specifier requires numeric argument");
+ }
+
+ public:
+ FMT_CONSTEXPR specs_checker(const Handler& handler, detail::type arg_type)
+ : Handler(handler), arg_type_(arg_type) {}
+
+ FMT_CONSTEXPR void on_align(align_t align) {
+ if (align == align::numeric) require_numeric_argument();
+ Handler::on_align(align);
+ }
+
+ FMT_CONSTEXPR void on_sign(sign_t s) {
+ require_numeric_argument();
+ if (is_integral_type(arg_type_) && arg_type_ != type::int_type &&
+ arg_type_ != type::long_long_type && arg_type_ != type::char_type) {
+ this->on_error("format specifier requires signed argument");
+ }
+ Handler::on_sign(s);
+ }
+
+ FMT_CONSTEXPR void on_hash() {
+ require_numeric_argument();
+ Handler::on_hash();
+ }
+
+ FMT_CONSTEXPR void on_localized() {
+ require_numeric_argument();
+ Handler::on_localized();
+ }
+
+ FMT_CONSTEXPR void on_zero() {
+ require_numeric_argument();
+ Handler::on_zero();
+ }
+
+ FMT_CONSTEXPR void end_precision() {
+ if (is_integral_type(arg_type_) || arg_type_ == type::pointer_type)
+ this->on_error("precision not allowed for this argument type");
+ }
+};
+
+constexpr int invalid_arg_index = -1;
+
+#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS
+template <int N, typename T, typename... Args, typename Char>
+constexpr auto get_arg_index_by_name(basic_string_view<Char> name) -> int {
+ if constexpr (detail::is_statically_named_arg<T>()) {
+ if (name == T::name) return N;
+ }
+ if constexpr (sizeof...(Args) > 0) {
+ return get_arg_index_by_name<N + 1, Args...>(name);
+ } else {
+ (void)name; // Workaround an MSVC bug about "unused" parameter.
+ return invalid_arg_index;
+ }
+}
+#endif
+
+template <typename... Args, typename Char>
+FMT_CONSTEXPR auto get_arg_index_by_name(basic_string_view<Char> name) -> int {
+#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS
+ if constexpr (sizeof...(Args) > 0) {
+ return get_arg_index_by_name<0, Args...>(name);
+ } else {
+ (void)name;
+ return invalid_arg_index;
+ }
+#else
+ (void)name;
+ return invalid_arg_index;
+#endif
+}
+
+template <typename Char, typename ErrorHandler, typename... Args>
+class format_string_checker {
+ private:
+ using parse_context_type = compile_parse_context<Char, ErrorHandler>;
+ enum { num_args = sizeof...(Args) };
+
+ // Format specifier parsing function.
+ using parse_func = const Char* (*)(parse_context_type&);
+
+ parse_context_type context_;
+ parse_func parse_funcs_[num_args > 0 ? num_args : 1];
+
+ public:
+ explicit FMT_CONSTEXPR format_string_checker(
+ basic_string_view<Char> format_str, ErrorHandler eh)
+ : context_(format_str, num_args, eh),
+ parse_funcs_{&parse_format_specs<Args, parse_context_type>...} {}
+
+ FMT_CONSTEXPR void on_text(const Char*, const Char*) {}
+
+ FMT_CONSTEXPR auto on_arg_id() -> int { return context_.next_arg_id(); }
+ FMT_CONSTEXPR auto on_arg_id(int id) -> int {
+ return context_.check_arg_id(id), id;
+ }
+ FMT_CONSTEXPR auto on_arg_id(basic_string_view<Char> id) -> int {
+#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS
+ auto index = get_arg_index_by_name<Args...>(id);
+ if (index == invalid_arg_index) on_error("named argument is not found");
+ return context_.check_arg_id(index), index;
+#else
+ (void)id;
+ on_error("compile-time checks for named arguments require C++20 support");
+ return 0;
#endif
+ }
-namespace detail {
+ FMT_CONSTEXPR void on_replacement_field(int, const Char*) {}
-template <typename Char, FMT_ENABLE_IF(!std::is_same<Char, char>::value)>
-std::basic_string<Char> vformat(
- basic_string_view<Char> format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args);
+ FMT_CONSTEXPR auto on_format_specs(int id, const Char* begin, const Char*)
+ -> const Char* {
+ context_.advance_to(context_.begin() + (begin - &*context_.begin()));
+ // id >= 0 check is a workaround for gcc 10 bug (#2065).
+ return id >= 0 && id < num_args ? parse_funcs_[id](context_) : begin;
+ }
-FMT_API std::string vformat(string_view format_str, format_args args);
+ FMT_CONSTEXPR void on_error(const char* message) {
+ context_.on_error(message);
+ }
+};
+
+template <typename... Args, typename S,
+ enable_if_t<(is_compile_string<S>::value), int>>
+void check_format_string(S format_str) {
+ FMT_CONSTEXPR auto s = to_string_view(format_str);
+ using checker = format_string_checker<typename S::char_type, error_handler,
+ remove_cvref_t<Args>...>;
+ FMT_CONSTEXPR bool invalid_format =
+ (parse_format_string<true>(s, checker(s, {})), true);
+ ignore_unused(invalid_format);
+}
template <typename Char>
void vformat_to(
- buffer<Char>& buf, basic_string_view<Char> format_str,
+ buffer<Char>& buf, basic_string_view<Char> fmt,
basic_format_args<FMT_BUFFER_CONTEXT(type_identity_t<Char>)> args,
- detail::locale_ref loc = {});
-
-template <typename Char, typename Args,
- FMT_ENABLE_IF(!std::is_same<Char, char>::value)>
-inline void vprint_mojibake(std::FILE*, basic_string_view<Char>, const Args&) {}
+ locale_ref loc = {});
FMT_API void vprint_mojibake(std::FILE*, string_view, format_args);
#ifndef _WIN32
inline void vprint_mojibake(std::FILE*, string_view, format_args) {}
#endif
-} // namespace detail
+FMT_END_DETAIL_NAMESPACE
+
+// A formatter specialization for the core types corresponding to detail::type
+// constants.
+template <typename T, typename Char>
+struct formatter<T, Char,
+ enable_if_t<detail::type_constant<T, Char>::value !=
+ detail::type::custom_type>> {
+ private:
+ detail::dynamic_format_specs<Char> specs_;
+
+ public:
+ // Parses format specifiers stopping either at the end of the range or at the
+ // terminating '}'.
+ template <typename ParseContext>
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+ auto begin = ctx.begin(), end = ctx.end();
+ if (begin == end) return begin;
+ using handler_type = detail::dynamic_specs_handler<ParseContext>;
+ auto type = detail::type_constant<T, Char>::value;
+ auto checker =
+ detail::specs_checker<handler_type>(handler_type(specs_, ctx), type);
+ auto it = detail::parse_format_specs(begin, end, checker);
+ auto eh = ctx.error_handler();
+ switch (type) {
+ case detail::type::none_type:
+ FMT_ASSERT(false, "invalid argument type");
+ break;
+ case detail::type::bool_type:
+ if (!specs_.type || specs_.type == 's') break;
+ FMT_FALLTHROUGH;
+ case detail::type::int_type:
+ case detail::type::uint_type:
+ case detail::type::long_long_type:
+ case detail::type::ulong_long_type:
+ case detail::type::int128_type:
+ case detail::type::uint128_type:
+ detail::check_int_type_spec(specs_.type, eh);
+ break;
+ case detail::type::char_type:
+ detail::check_char_specs(specs_, eh);
+ break;
+ case detail::type::float_type:
+ if (detail::const_check(FMT_USE_FLOAT))
+ detail::parse_float_type_spec(specs_, eh);
+ else
+ FMT_ASSERT(false, "float support disabled");
+ break;
+ case detail::type::double_type:
+ if (detail::const_check(FMT_USE_DOUBLE))
+ detail::parse_float_type_spec(specs_, eh);
+ else
+ FMT_ASSERT(false, "double support disabled");
+ break;
+ case detail::type::long_double_type:
+ if (detail::const_check(FMT_USE_LONG_DOUBLE))
+ detail::parse_float_type_spec(specs_, eh);
+ else
+ FMT_ASSERT(false, "long double support disabled");
+ break;
+ case detail::type::cstring_type:
+ detail::check_cstring_type_spec(specs_.type, eh);
+ break;
+ case detail::type::string_type:
+ detail::check_string_type_spec(specs_.type, eh);
+ break;
+ case detail::type::pointer_type:
+ detail::check_pointer_type_spec(specs_.type, eh);
+ break;
+ case detail::type::custom_type:
+ // Custom format specifiers are checked in parse functions of
+ // formatter specializations.
+ break;
+ }
+ return it;
+ }
+
+ template <typename FormatContext>
+ FMT_CONSTEXPR auto format(const T& val, FormatContext& ctx) const
+ -> decltype(ctx.out());
+};
+
+template <typename Char> struct basic_runtime { basic_string_view<Char> str; };
+
+template <typename Char, typename... Args> class basic_format_string {
+ private:
+ basic_string_view<Char> str_;
+
+ public:
+ template <typename S,
+ FMT_ENABLE_IF(
+ std::is_convertible<const S&, basic_string_view<Char>>::value)>
+ FMT_CONSTEVAL basic_format_string(const S& s) : str_(s) {
+ static_assert(
+ detail::count<
+ (std::is_base_of<detail::view, remove_reference_t<Args>>::value &&
+ std::is_reference<Args>::value)...>() == 0,
+ "passing views as lvalues is disallowed");
+#ifdef FMT_HAS_CONSTEVAL
+ if constexpr (detail::count_named_args<Args...>() == 0) {
+ using checker = detail::format_string_checker<Char, detail::error_handler,
+ remove_cvref_t<Args>...>;
+ detail::parse_format_string<true>(str_, checker(s, {}));
+ }
+#else
+ detail::check_format_string<Args...>(s);
+#endif
+ }
+ basic_format_string(basic_runtime<Char> r) : str_(r.str) {}
+
+ FMT_INLINE operator basic_string_view<Char>() const { return str_; }
+};
+
+#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
+// Workaround broken conversion on older gcc.
+template <typename... Args> using format_string = string_view;
+template <typename S> auto runtime(const S& s) -> basic_string_view<char_t<S>> {
+ return s;
+}
+#else
+template <typename... Args>
+using format_string = basic_format_string<char, type_identity_t<Args>...>;
+// Creates a runtime format string.
+template <typename S> auto runtime(const S& s) -> basic_runtime<char_t<S>> {
+ return {{s}};
+}
+#endif
+
+FMT_API auto vformat(string_view fmt, format_args args) -> std::string;
+
+/**
+ \rst
+ Formats ``args`` according to specifications in ``fmt`` and returns the result
+ as a string.
+
+ **Example**::
+
+ #include <fmt/core.h>
+ std::string message = fmt::format("The answer is {}", 42);
+ \endrst
+*/
+template <typename... T>
+FMT_INLINE auto format(format_string<T...> fmt, T&&... args) -> std::string {
+ return vformat(fmt, fmt::make_format_args(args...));
+}
/** Formats a string and writes the output to ``out``. */
-// GCC 8 and earlier cannot handle std::back_insert_iterator<Container> with
-// vformat_to<ArgFormatter>(...) overload, so SFINAE on iterator type instead.
-template <typename OutputIt, typename S, typename Char = char_t<S>,
- bool enable = detail::is_output_iterator<OutputIt, Char>::value>
-auto vformat_to(OutputIt out, const S& format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args)
- -> typename std::enable_if<enable, OutputIt>::type {
- decltype(detail::get_buffer<Char>(out)) buf(detail::get_buffer_init(out));
- detail::vformat_to(buf, to_string_view(format_str), args);
+template <typename OutputIt,
+ FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
+auto vformat_to(OutputIt out, string_view fmt, format_args args) -> OutputIt {
+ using detail::get_buffer;
+ auto&& buf = get_buffer<char>(out);
+ detail::vformat_to(buf, string_view(fmt), args, {});
return detail::get_iterator(buf);
}
/**
\rst
- Formats arguments, writes the result to the output iterator ``out`` and returns
- the iterator past the end of the output range.
+ Formats ``args`` according to specifications in ``fmt``, writes the result to
+ the output iterator ``out`` and returns the iterator past the end of the output
+ range.
**Example**::
- std::vector<char> out;
+ auto out = std::vector<char>();
fmt::format_to(std::back_inserter(out), "{}", 42);
\endrst
*/
-// We cannot use FMT_ENABLE_IF because of a bug in gcc 8.3.
-template <typename OutputIt, typename S, typename... Args,
- bool enable = detail::is_output_iterator<OutputIt, char_t<S>>::value>
-inline auto format_to(OutputIt out, const S& format_str, Args&&... args) ->
- typename std::enable_if<enable, OutputIt>::type {
- const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...);
- return vformat_to(out, to_string_view(format_str), vargs);
+template <typename OutputIt, typename... T,
+ FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
+FMT_INLINE auto format_to(OutputIt out, format_string<T...> fmt, T&&... args)
+ -> OutputIt {
+ return vformat_to(out, fmt, fmt::make_format_args(args...));
}
template <typename OutputIt> struct format_to_n_result {
size_t size;
};
-template <typename OutputIt, typename Char, typename... Args,
- FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value)>
-inline format_to_n_result<OutputIt> vformat_to_n(
- OutputIt out, size_t n, basic_string_view<Char> format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args) {
- detail::iterator_buffer<OutputIt, Char, detail::fixed_buffer_traits> buf(out,
- n);
- detail::vformat_to(buf, format_str, args);
+template <typename OutputIt, typename... T,
+ FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
+auto vformat_to_n(OutputIt out, size_t n, string_view fmt, format_args args)
+ -> format_to_n_result<OutputIt> {
+ using buffer =
+ detail::iterator_buffer<OutputIt, char, detail::fixed_buffer_traits>;
+ auto buf = buffer(out, n);
+ detail::vformat_to(buf, fmt, args, {});
return {buf.out(), buf.count()};
}
/**
- \rst
- Formats arguments, writes up to ``n`` characters of the result to the output
- iterator ``out`` and returns the total output size and the iterator past the
- end of the output range.
- \endrst
+ \rst
+ Formats ``args`` according to specifications in ``fmt``, writes up to ``n``
+ characters of the result to the output iterator ``out`` and returns the total
+ (not truncated) output size and the iterator past the end of the output range.
+ \endrst
*/
-template <typename OutputIt, typename S, typename... Args,
- bool enable = detail::is_output_iterator<OutputIt, char_t<S>>::value>
-inline auto format_to_n(OutputIt out, size_t n, const S& format_str,
- const Args&... args) ->
- typename std::enable_if<enable, format_to_n_result<OutputIt>>::type {
- const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...);
- return vformat_to_n(out, n, to_string_view(format_str), vargs);
+template <typename OutputIt, typename... T,
+ FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
+FMT_INLINE auto format_to_n(OutputIt out, size_t n, format_string<T...> fmt,
+ const T&... args) -> format_to_n_result<OutputIt> {
+ return vformat_to_n(out, n, fmt, fmt::make_format_args(args...));
}
-/**
- Returns the number of characters in the output of
- ``format(format_str, args...)``.
- */
-template <typename... Args>
-inline size_t formatted_size(string_view format_str, Args&&... args) {
- const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...);
- detail::counting_buffer<> buf;
- detail::vformat_to(buf, format_str, vargs);
+/** Returns the number of chars in the output of ``format(fmt, args...)``. */
+template <typename... T>
+FMT_INLINE auto formatted_size(format_string<T...> fmt, T&&... args) -> size_t {
+ auto buf = detail::counting_buffer<>();
+ detail::vformat_to(buf, string_view(fmt), fmt::make_format_args(args...), {});
return buf.count();
}
-template <typename S, typename Char = char_t<S>>
-FMT_INLINE std::basic_string<Char> vformat(
- const S& format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args) {
- return detail::vformat(to_string_view(format_str), args);
-}
+FMT_API void vprint(string_view fmt, format_args args);
+FMT_API void vprint(std::FILE* f, string_view fmt, format_args args);
/**
\rst
- Formats arguments and returns the result as a string.
+ Formats ``args`` according to specifications in ``fmt`` and writes the output
+ to ``stdout``.
**Example**::
- #include <fmt/core.h>
- std::string message = fmt::format("The answer is {}", 42);
+ fmt::print("Elapsed time: {0:.2f} seconds", 1.23);
\endrst
-*/
-// Pass char_t as a default template parameter instead of using
-// std::basic_string<char_t<S>> to reduce the symbol size.
-template <typename S, typename... Args, typename Char = char_t<S>>
-FMT_INLINE std::basic_string<Char> format(const S& format_str, Args&&... args) {
- const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...);
- return detail::vformat(to_string_view(format_str), vargs);
+ */
+template <typename... T>
+FMT_INLINE void print(format_string<T...> fmt, T&&... args) {
+ const auto& vargs = fmt::make_format_args(args...);
+ return detail::is_utf8() ? vprint(fmt, vargs)
+ : detail::vprint_mojibake(stdout, fmt, vargs);
}
-FMT_API void vprint(string_view, format_args);
-FMT_API void vprint(std::FILE*, string_view, format_args);
-
/**
\rst
- Formats ``args`` according to specifications in ``format_str`` and writes the
- output to the file ``f``. Strings are assumed to be Unicode-encoded unless the
- ``FMT_UNICODE`` macro is set to 0.
+ Formats ``args`` according to specifications in ``fmt`` and writes the
+ output to the file ``f``.
**Example**::
fmt::print(stderr, "Don't {}!", "panic");
\endrst
*/
-template <typename S, typename... Args, typename Char = char_t<S>>
-inline void print(std::FILE* f, const S& format_str, Args&&... args) {
- const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...);
- return detail::is_unicode<Char>()
- ? vprint(f, to_string_view(format_str), vargs)
- : detail::vprint_mojibake(f, to_string_view(format_str), vargs);
+template <typename... T>
+FMT_INLINE void print(std::FILE* f, format_string<T...> fmt, T&&... args) {
+ const auto& vargs = fmt::make_format_args(args...);
+ return detail::is_utf8() ? vprint(f, fmt, vargs)
+ : detail::vprint_mojibake(f, fmt, vargs);
}
-/**
- \rst
- Formats ``args`` according to specifications in ``format_str`` and writes
- the output to ``stdout``. Strings are assumed to be Unicode-encoded unless
- the ``FMT_UNICODE`` macro is set to 0.
-
- **Example**::
-
- fmt::print("Elapsed time: {0:.2f} seconds", 1.23);
- \endrst
- */
-template <typename S, typename... Args, typename Char = char_t<S>>
-inline void print(const S& format_str, Args&&... args) {
- const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...);
- return detail::is_unicode<Char>()
- ? vprint(to_string_view(format_str), vargs)
- : detail::vprint_mojibake(stdout, to_string_view(format_str),
- vargs);
-}
+FMT_MODULE_EXPORT_END
+FMT_GCC_PRAGMA("GCC pop_options")
FMT_END_NAMESPACE
+#ifdef FMT_HEADER_ONLY
+# include "format.h"
+#endif
#endif // FMT_CORE_H_
#ifndef FMT_FORMAT_INL_H_
#define FMT_FORMAT_INL_H_
-#include <cassert>
+#include <algorithm>
#include <cctype>
+#include <cerrno> // errno
#include <climits>
#include <cmath>
#include <cstdarg>
#include "format.h"
-// Dummy implementations of strerror_r and strerror_s called if corresponding
-// system functions are not available.
-inline fmt::detail::null<> strerror_r(int, char*, ...) { return {}; }
-inline fmt::detail::null<> strerror_s(char*, size_t, ...) { return {}; }
-
FMT_BEGIN_NAMESPACE
namespace detail {
# define FMT_SNPRINTF fmt_snprintf
#endif // _MSC_VER
-// A portable thread-safe version of strerror.
-// Sets buffer to point to a string describing the error code.
-// This can be either a pointer to a string stored in buffer,
-// or a pointer to some static immutable string.
-// Returns one of the following values:
-// 0 - success
-// ERANGE - buffer is not large enough to store the error message
-// other - failure
-// Buffer should be at least of size 1.
-inline int safe_strerror(int error_code, char*& buffer,
- size_t buffer_size) FMT_NOEXCEPT {
- FMT_ASSERT(buffer != nullptr && buffer_size != 0, "invalid buffer");
-
- class dispatcher {
- private:
- int error_code_;
- char*& buffer_;
- size_t buffer_size_;
-
- // A noop assignment operator to avoid bogus warnings.
- void operator=(const dispatcher&) {}
-
- // Handle the result of XSI-compliant version of strerror_r.
- int handle(int result) {
- // glibc versions before 2.13 return result in errno.
- return result == -1 ? errno : result;
- }
-
- // Handle the result of GNU-specific version of strerror_r.
- FMT_MAYBE_UNUSED
- int handle(char* message) {
- // If the buffer is full then the message is probably truncated.
- if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1)
- return ERANGE;
- buffer_ = message;
- return 0;
- }
-
- // Handle the case when strerror_r is not available.
- FMT_MAYBE_UNUSED
- int handle(detail::null<>) {
- return fallback(strerror_s(buffer_, buffer_size_, error_code_));
- }
-
- // Fallback to strerror_s when strerror_r is not available.
- FMT_MAYBE_UNUSED
- int fallback(int result) {
- // If the buffer is full then the message is probably truncated.
- return result == 0 && strlen(buffer_) == buffer_size_ - 1 ? ERANGE
- : result;
- }
-
-#if !FMT_MSC_VER
- // Fallback to strerror if strerror_r and strerror_s are not available.
- int fallback(detail::null<>) {
- errno = 0;
- buffer_ = strerror(error_code_);
- return errno;
- }
-#endif
-
- public:
- dispatcher(int err_code, char*& buf, size_t buf_size)
- : error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {}
-
- int run() { return handle(strerror_r(error_code_, buffer_, buffer_size_)); }
- };
- return dispatcher(error_code, buffer, buffer_size).run();
-}
-
FMT_FUNC void format_error_code(detail::buffer<char>& out, int error_code,
string_view message) FMT_NOEXCEPT {
// Report error code making sure that the output fits into
error_code_size += detail::to_unsigned(detail::count_digits(abs_value));
auto it = buffer_appender<char>(out);
if (message.size() <= inline_buffer_size - error_code_size)
- format_to(it, "{}{}", message, SEP);
- format_to(it, "{}{}", ERROR_STR, error_code);
- assert(out.size() <= inline_buffer_size);
+ format_to(it, FMT_STRING("{}{}"), message, SEP);
+ format_to(it, FMT_STRING("{}{}"), ERROR_STR, error_code);
+ FMT_ASSERT(out.size() <= inline_buffer_size, "");
}
FMT_FUNC void report_error(format_func func, int error_code,
- string_view message) FMT_NOEXCEPT {
+ const char* message) FMT_NOEXCEPT {
memory_buffer full_message;
func(full_message, error_code, message);
// Don't use fwrite_fully because the latter may throw.
- (void)std::fwrite(full_message.data(), full_message.size(), 1, stderr);
- std::fputc('\n', stderr);
+ if (std::fwrite(full_message.data(), full_message.size(), 1, stderr) > 0)
+ std::fputc('\n', stderr);
}
// A wrapper around fwrite that throws on error.
size_t written = std::fwrite(ptr, size, count, stream);
if (written < count) FMT_THROW(system_error(errno, "cannot write to file"));
}
-} // namespace detail
-
-#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR)
-namespace detail {
+#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
template <typename Locale>
locale_ref::locale_ref(const Locale& loc) : locale_(&loc) {
static_assert(std::is_same<Locale, std::locale>::value, "");
return locale_ ? *static_cast<const std::locale*>(locale_) : std::locale();
}
-template <typename Char> FMT_FUNC std::string grouping_impl(locale_ref loc) {
- return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>()).grouping();
-}
-template <typename Char> FMT_FUNC Char thousands_sep_impl(locale_ref loc) {
- return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>())
- .thousands_sep();
+template <typename Char>
+FMT_FUNC auto thousands_sep_impl(locale_ref loc) -> thousands_sep_result<Char> {
+ auto& facet = std::use_facet<std::numpunct<Char>>(loc.get<std::locale>());
+ auto grouping = facet.grouping();
+ 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) {
return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>())
.decimal_point();
}
-} // namespace detail
#else
template <typename Char>
-FMT_FUNC std::string detail::grouping_impl(locale_ref) {
- return "\03";
+FMT_FUNC auto thousands_sep_impl(locale_ref) -> thousands_sep_result<Char> {
+ return {"\03", FMT_STATIC_THOUSANDS_SEPARATOR};
}
-template <typename Char> FMT_FUNC Char detail::thousands_sep_impl(locale_ref) {
- return FMT_STATIC_THOUSANDS_SEPARATOR;
-}
-template <typename Char> FMT_FUNC Char detail::decimal_point_impl(locale_ref) {
+template <typename Char> FMT_FUNC Char decimal_point_impl(locale_ref) {
return '.';
}
#endif
+} // namespace detail
+#if !FMT_MSC_VER
FMT_API FMT_FUNC format_error::~format_error() FMT_NOEXCEPT = default;
-FMT_API FMT_FUNC system_error::~system_error() FMT_NOEXCEPT = default;
+#endif
-FMT_FUNC void system_error::init(int err_code, string_view format_str,
- format_args args) {
- error_code_ = err_code;
- memory_buffer buffer;
- format_system_error(buffer, err_code, vformat(format_str, args));
- std::runtime_error& base = *this;
- base = std::runtime_error(to_string(buffer));
+FMT_FUNC std::system_error vsystem_error(int error_code, string_view format_str,
+ format_args args) {
+ auto ec = std::error_code(error_code, std::generic_category());
+ return std::system_error(ec, vformat(format_str, args));
}
namespace detail {
return i >= 0 ? i * char_digits + count_digits<4, unsigned>(n.value[i]) : 1;
}
+#if __cplusplus < 201703L
+template <typename T> constexpr const char basic_data<T>::digits[][2];
+template <typename T> constexpr const char basic_data<T>::hex_digits[];
+template <typename T> constexpr const char basic_data<T>::signs[];
+template <typename T> constexpr const unsigned basic_data<T>::prefixes[];
+template <typename T> constexpr const char basic_data<T>::left_padding_shifts[];
template <typename T>
-const typename basic_data<T>::digit_pair basic_data<T>::digits[] = {
- {'0', '0'}, {'0', '1'}, {'0', '2'}, {'0', '3'}, {'0', '4'}, {'0', '5'},
- {'0', '6'}, {'0', '7'}, {'0', '8'}, {'0', '9'}, {'1', '0'}, {'1', '1'},
- {'1', '2'}, {'1', '3'}, {'1', '4'}, {'1', '5'}, {'1', '6'}, {'1', '7'},
- {'1', '8'}, {'1', '9'}, {'2', '0'}, {'2', '1'}, {'2', '2'}, {'2', '3'},
- {'2', '4'}, {'2', '5'}, {'2', '6'}, {'2', '7'}, {'2', '8'}, {'2', '9'},
- {'3', '0'}, {'3', '1'}, {'3', '2'}, {'3', '3'}, {'3', '4'}, {'3', '5'},
- {'3', '6'}, {'3', '7'}, {'3', '8'}, {'3', '9'}, {'4', '0'}, {'4', '1'},
- {'4', '2'}, {'4', '3'}, {'4', '4'}, {'4', '5'}, {'4', '6'}, {'4', '7'},
- {'4', '8'}, {'4', '9'}, {'5', '0'}, {'5', '1'}, {'5', '2'}, {'5', '3'},
- {'5', '4'}, {'5', '5'}, {'5', '6'}, {'5', '7'}, {'5', '8'}, {'5', '9'},
- {'6', '0'}, {'6', '1'}, {'6', '2'}, {'6', '3'}, {'6', '4'}, {'6', '5'},
- {'6', '6'}, {'6', '7'}, {'6', '8'}, {'6', '9'}, {'7', '0'}, {'7', '1'},
- {'7', '2'}, {'7', '3'}, {'7', '4'}, {'7', '5'}, {'7', '6'}, {'7', '7'},
- {'7', '8'}, {'7', '9'}, {'8', '0'}, {'8', '1'}, {'8', '2'}, {'8', '3'},
- {'8', '4'}, {'8', '5'}, {'8', '6'}, {'8', '7'}, {'8', '8'}, {'8', '9'},
- {'9', '0'}, {'9', '1'}, {'9', '2'}, {'9', '3'}, {'9', '4'}, {'9', '5'},
- {'9', '6'}, {'9', '7'}, {'9', '8'}, {'9', '9'}};
-
-template <typename T>
-const char basic_data<T>::hex_digits[] = "0123456789abcdef";
-
-#define FMT_POWERS_OF_10(factor) \
- factor * 10, (factor)*100, (factor)*1000, (factor)*10000, (factor)*100000, \
- (factor)*1000000, (factor)*10000000, (factor)*100000000, \
- (factor)*1000000000
-
-template <typename T>
-const uint64_t basic_data<T>::powers_of_10_64[] = {
- 1, FMT_POWERS_OF_10(1), FMT_POWERS_OF_10(1000000000ULL),
- 10000000000000000000ULL};
-
-template <typename T>
-const uint32_t basic_data<T>::zero_or_powers_of_10_32[] = {0,
- FMT_POWERS_OF_10(1)};
-template <typename T>
-const uint64_t basic_data<T>::zero_or_powers_of_10_64[] = {
- 0, FMT_POWERS_OF_10(1), FMT_POWERS_OF_10(1000000000ULL),
- 10000000000000000000ULL};
-
-template <typename T>
-const uint32_t basic_data<T>::zero_or_powers_of_10_32_new[] = {
- 0, 0, FMT_POWERS_OF_10(1)};
-
-template <typename T>
-const uint64_t basic_data<T>::zero_or_powers_of_10_64_new[] = {
- 0, 0, FMT_POWERS_OF_10(1), FMT_POWERS_OF_10(1000000000ULL),
- 10000000000000000000ULL};
-
-// Normalized 64-bit significands of pow(10, k), for k = -348, -340, ..., 340.
-// These are generated by support/compute-powers.py.
-template <typename T>
-const uint64_t basic_data<T>::grisu_pow10_significands[] = {
- 0xfa8fd5a0081c0288, 0xbaaee17fa23ebf76, 0x8b16fb203055ac76,
- 0xcf42894a5dce35ea, 0x9a6bb0aa55653b2d, 0xe61acf033d1a45df,
- 0xab70fe17c79ac6ca, 0xff77b1fcbebcdc4f, 0xbe5691ef416bd60c,
- 0x8dd01fad907ffc3c, 0xd3515c2831559a83, 0x9d71ac8fada6c9b5,
- 0xea9c227723ee8bcb, 0xaecc49914078536d, 0x823c12795db6ce57,
- 0xc21094364dfb5637, 0x9096ea6f3848984f, 0xd77485cb25823ac7,
- 0xa086cfcd97bf97f4, 0xef340a98172aace5, 0xb23867fb2a35b28e,
- 0x84c8d4dfd2c63f3b, 0xc5dd44271ad3cdba, 0x936b9fcebb25c996,
- 0xdbac6c247d62a584, 0xa3ab66580d5fdaf6, 0xf3e2f893dec3f126,
- 0xb5b5ada8aaff80b8, 0x87625f056c7c4a8b, 0xc9bcff6034c13053,
- 0x964e858c91ba2655, 0xdff9772470297ebd, 0xa6dfbd9fb8e5b88f,
- 0xf8a95fcf88747d94, 0xb94470938fa89bcf, 0x8a08f0f8bf0f156b,
- 0xcdb02555653131b6, 0x993fe2c6d07b7fac, 0xe45c10c42a2b3b06,
- 0xaa242499697392d3, 0xfd87b5f28300ca0e, 0xbce5086492111aeb,
- 0x8cbccc096f5088cc, 0xd1b71758e219652c, 0x9c40000000000000,
- 0xe8d4a51000000000, 0xad78ebc5ac620000, 0x813f3978f8940984,
- 0xc097ce7bc90715b3, 0x8f7e32ce7bea5c70, 0xd5d238a4abe98068,
- 0x9f4f2726179a2245, 0xed63a231d4c4fb27, 0xb0de65388cc8ada8,
- 0x83c7088e1aab65db, 0xc45d1df942711d9a, 0x924d692ca61be758,
- 0xda01ee641a708dea, 0xa26da3999aef774a, 0xf209787bb47d6b85,
- 0xb454e4a179dd1877, 0x865b86925b9bc5c2, 0xc83553c5c8965d3d,
- 0x952ab45cfa97a0b3, 0xde469fbd99a05fe3, 0xa59bc234db398c25,
- 0xf6c69a72a3989f5c, 0xb7dcbf5354e9bece, 0x88fcf317f22241e2,
- 0xcc20ce9bd35c78a5, 0x98165af37b2153df, 0xe2a0b5dc971f303a,
- 0xa8d9d1535ce3b396, 0xfb9b7cd9a4a7443c, 0xbb764c4ca7a44410,
- 0x8bab8eefb6409c1a, 0xd01fef10a657842c, 0x9b10a4e5e9913129,
- 0xe7109bfba19c0c9d, 0xac2820d9623bf429, 0x80444b5e7aa7cf85,
- 0xbf21e44003acdd2d, 0x8e679c2f5e44ff8f, 0xd433179d9c8cb841,
- 0x9e19db92b4e31ba9, 0xeb96bf6ebadf77d9, 0xaf87023b9bf0ee6b,
-};
-
-// Binary exponents of pow(10, k), for k = -348, -340, ..., 340, corresponding
-// to significands above.
-template <typename T>
-const int16_t basic_data<T>::grisu_pow10_exponents[] = {
- -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980, -954,
- -927, -901, -874, -847, -821, -794, -768, -741, -715, -688, -661,
- -635, -608, -582, -555, -529, -502, -475, -449, -422, -396, -369,
- -343, -316, -289, -263, -236, -210, -183, -157, -130, -103, -77,
- -50, -24, 3, 30, 56, 83, 109, 136, 162, 189, 216,
- 242, 269, 295, 322, 348, 375, 402, 428, 455, 481, 508,
- 534, 561, 588, 614, 641, 667, 694, 720, 747, 774, 800,
- 827, 853, 880, 907, 933, 960, 986, 1013, 1039, 1066};
-
-template <typename T>
-const divtest_table_entry<uint32_t> basic_data<T>::divtest_table_for_pow5_32[] =
- {{0x00000001, 0xffffffff}, {0xcccccccd, 0x33333333},
- {0xc28f5c29, 0x0a3d70a3}, {0x26e978d5, 0x020c49ba},
- {0x3afb7e91, 0x0068db8b}, {0x0bcbe61d, 0x0014f8b5},
- {0x68c26139, 0x000431bd}, {0xae8d46a5, 0x0000d6bf},
- {0x22e90e21, 0x00002af3}, {0x3a2e9c6d, 0x00000897},
- {0x3ed61f49, 0x000001b7}};
-
-template <typename T>
-const divtest_table_entry<uint64_t> basic_data<T>::divtest_table_for_pow5_64[] =
- {{0x0000000000000001, 0xffffffffffffffff},
- {0xcccccccccccccccd, 0x3333333333333333},
- {0x8f5c28f5c28f5c29, 0x0a3d70a3d70a3d70},
- {0x1cac083126e978d5, 0x020c49ba5e353f7c},
- {0xd288ce703afb7e91, 0x0068db8bac710cb2},
- {0x5d4e8fb00bcbe61d, 0x0014f8b588e368f0},
- {0x790fb65668c26139, 0x000431bde82d7b63},
- {0xe5032477ae8d46a5, 0x0000d6bf94d5e57a},
- {0xc767074b22e90e21, 0x00002af31dc46118},
- {0x8e47ce423a2e9c6d, 0x0000089705f4136b},
- {0x4fa7f60d3ed61f49, 0x000001b7cdfd9d7b},
- {0x0fee64690c913975, 0x00000057f5ff85e5},
- {0x3662e0e1cf503eb1, 0x000000119799812d},
- {0xa47a2cf9f6433fbd, 0x0000000384b84d09},
- {0x54186f653140a659, 0x00000000b424dc35},
- {0x7738164770402145, 0x0000000024075f3d},
- {0xe4a4d1417cd9a041, 0x000000000734aca5},
- {0xc75429d9e5c5200d, 0x000000000170ef54},
- {0xc1773b91fac10669, 0x000000000049c977},
- {0x26b172506559ce15, 0x00000000000ec1e4},
- {0xd489e3a9addec2d1, 0x000000000002f394},
- {0x90e860bb892c8d5d, 0x000000000000971d},
- {0x502e79bf1b6f4f79, 0x0000000000001e39},
- {0xdcd618596be30fe5, 0x000000000000060b}};
-
-template <typename T>
-const uint64_t basic_data<T>::dragonbox_pow10_significands_64[] = {
- 0x81ceb32c4b43fcf5, 0xa2425ff75e14fc32, 0xcad2f7f5359a3b3f,
- 0xfd87b5f28300ca0e, 0x9e74d1b791e07e49, 0xc612062576589ddb,
- 0xf79687aed3eec552, 0x9abe14cd44753b53, 0xc16d9a0095928a28,
- 0xf1c90080baf72cb2, 0x971da05074da7bef, 0xbce5086492111aeb,
- 0xec1e4a7db69561a6, 0x9392ee8e921d5d08, 0xb877aa3236a4b44a,
- 0xe69594bec44de15c, 0x901d7cf73ab0acda, 0xb424dc35095cd810,
- 0xe12e13424bb40e14, 0x8cbccc096f5088cc, 0xafebff0bcb24aaff,
- 0xdbe6fecebdedd5bf, 0x89705f4136b4a598, 0xabcc77118461cefd,
- 0xd6bf94d5e57a42bd, 0x8637bd05af6c69b6, 0xa7c5ac471b478424,
- 0xd1b71758e219652c, 0x83126e978d4fdf3c, 0xa3d70a3d70a3d70b,
- 0xcccccccccccccccd, 0x8000000000000000, 0xa000000000000000,
- 0xc800000000000000, 0xfa00000000000000, 0x9c40000000000000,
- 0xc350000000000000, 0xf424000000000000, 0x9896800000000000,
- 0xbebc200000000000, 0xee6b280000000000, 0x9502f90000000000,
- 0xba43b74000000000, 0xe8d4a51000000000, 0x9184e72a00000000,
- 0xb5e620f480000000, 0xe35fa931a0000000, 0x8e1bc9bf04000000,
- 0xb1a2bc2ec5000000, 0xde0b6b3a76400000, 0x8ac7230489e80000,
- 0xad78ebc5ac620000, 0xd8d726b7177a8000, 0x878678326eac9000,
- 0xa968163f0a57b400, 0xd3c21bcecceda100, 0x84595161401484a0,
- 0xa56fa5b99019a5c8, 0xcecb8f27f4200f3a, 0x813f3978f8940984,
- 0xa18f07d736b90be5, 0xc9f2c9cd04674ede, 0xfc6f7c4045812296,
- 0x9dc5ada82b70b59d, 0xc5371912364ce305, 0xf684df56c3e01bc6,
- 0x9a130b963a6c115c, 0xc097ce7bc90715b3, 0xf0bdc21abb48db20,
- 0x96769950b50d88f4, 0xbc143fa4e250eb31, 0xeb194f8e1ae525fd,
- 0x92efd1b8d0cf37be, 0xb7abc627050305ad, 0xe596b7b0c643c719,
- 0x8f7e32ce7bea5c6f, 0xb35dbf821ae4f38b, 0xe0352f62a19e306e};
-
-template <typename T>
-const uint128_wrapper basic_data<T>::dragonbox_pow10_significands_128[] = {
-#if FMT_USE_FULL_CACHE_DRAGONBOX
- {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b},
- {0x9faacf3df73609b1, 0x77b191618c54e9ad},
- {0xc795830d75038c1d, 0xd59df5b9ef6a2418},
- {0xf97ae3d0d2446f25, 0x4b0573286b44ad1e},
- {0x9becce62836ac577, 0x4ee367f9430aec33},
- {0xc2e801fb244576d5, 0x229c41f793cda740},
- {0xf3a20279ed56d48a, 0x6b43527578c11110},
- {0x9845418c345644d6, 0x830a13896b78aaaa},
- {0xbe5691ef416bd60c, 0x23cc986bc656d554},
- {0xedec366b11c6cb8f, 0x2cbfbe86b7ec8aa9},
- {0x94b3a202eb1c3f39, 0x7bf7d71432f3d6aa},
- {0xb9e08a83a5e34f07, 0xdaf5ccd93fb0cc54},
- {0xe858ad248f5c22c9, 0xd1b3400f8f9cff69},
- {0x91376c36d99995be, 0x23100809b9c21fa2},
- {0xb58547448ffffb2d, 0xabd40a0c2832a78b},
- {0xe2e69915b3fff9f9, 0x16c90c8f323f516d},
- {0x8dd01fad907ffc3b, 0xae3da7d97f6792e4},
- {0xb1442798f49ffb4a, 0x99cd11cfdf41779d},
- {0xdd95317f31c7fa1d, 0x40405643d711d584},
- {0x8a7d3eef7f1cfc52, 0x482835ea666b2573},
- {0xad1c8eab5ee43b66, 0xda3243650005eed0},
- {0xd863b256369d4a40, 0x90bed43e40076a83},
- {0x873e4f75e2224e68, 0x5a7744a6e804a292},
- {0xa90de3535aaae202, 0x711515d0a205cb37},
- {0xd3515c2831559a83, 0x0d5a5b44ca873e04},
- {0x8412d9991ed58091, 0xe858790afe9486c3},
- {0xa5178fff668ae0b6, 0x626e974dbe39a873},
- {0xce5d73ff402d98e3, 0xfb0a3d212dc81290},
- {0x80fa687f881c7f8e, 0x7ce66634bc9d0b9a},
- {0xa139029f6a239f72, 0x1c1fffc1ebc44e81},
- {0xc987434744ac874e, 0xa327ffb266b56221},
- {0xfbe9141915d7a922, 0x4bf1ff9f0062baa9},
- {0x9d71ac8fada6c9b5, 0x6f773fc3603db4aa},
- {0xc4ce17b399107c22, 0xcb550fb4384d21d4},
- {0xf6019da07f549b2b, 0x7e2a53a146606a49},
- {0x99c102844f94e0fb, 0x2eda7444cbfc426e},
- {0xc0314325637a1939, 0xfa911155fefb5309},
- {0xf03d93eebc589f88, 0x793555ab7eba27cb},
- {0x96267c7535b763b5, 0x4bc1558b2f3458df},
- {0xbbb01b9283253ca2, 0x9eb1aaedfb016f17},
- {0xea9c227723ee8bcb, 0x465e15a979c1cadd},
- {0x92a1958a7675175f, 0x0bfacd89ec191eca},
- {0xb749faed14125d36, 0xcef980ec671f667c},
- {0xe51c79a85916f484, 0x82b7e12780e7401b},
- {0x8f31cc0937ae58d2, 0xd1b2ecb8b0908811},
- {0xb2fe3f0b8599ef07, 0x861fa7e6dcb4aa16},
- {0xdfbdcece67006ac9, 0x67a791e093e1d49b},
- {0x8bd6a141006042bd, 0xe0c8bb2c5c6d24e1},
- {0xaecc49914078536d, 0x58fae9f773886e19},
- {0xda7f5bf590966848, 0xaf39a475506a899f},
- {0x888f99797a5e012d, 0x6d8406c952429604},
- {0xaab37fd7d8f58178, 0xc8e5087ba6d33b84},
- {0xd5605fcdcf32e1d6, 0xfb1e4a9a90880a65},
- {0x855c3be0a17fcd26, 0x5cf2eea09a550680},
- {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f},
- {0xd0601d8efc57b08b, 0xf13b94daf124da27},
- {0x823c12795db6ce57, 0x76c53d08d6b70859},
- {0xa2cb1717b52481ed, 0x54768c4b0c64ca6f},
- {0xcb7ddcdda26da268, 0xa9942f5dcf7dfd0a},
- {0xfe5d54150b090b02, 0xd3f93b35435d7c4d},
- {0x9efa548d26e5a6e1, 0xc47bc5014a1a6db0},
- {0xc6b8e9b0709f109a, 0x359ab6419ca1091c},
- {0xf867241c8cc6d4c0, 0xc30163d203c94b63},
- {0x9b407691d7fc44f8, 0x79e0de63425dcf1e},
- {0xc21094364dfb5636, 0x985915fc12f542e5},
- {0xf294b943e17a2bc4, 0x3e6f5b7b17b2939e},
- {0x979cf3ca6cec5b5a, 0xa705992ceecf9c43},
- {0xbd8430bd08277231, 0x50c6ff782a838354},
- {0xece53cec4a314ebd, 0xa4f8bf5635246429},
- {0x940f4613ae5ed136, 0x871b7795e136be9a},
- {0xb913179899f68584, 0x28e2557b59846e40},
- {0xe757dd7ec07426e5, 0x331aeada2fe589d0},
- {0x9096ea6f3848984f, 0x3ff0d2c85def7622},
- {0xb4bca50b065abe63, 0x0fed077a756b53aa},
- {0xe1ebce4dc7f16dfb, 0xd3e8495912c62895},
- {0x8d3360f09cf6e4bd, 0x64712dd7abbbd95d},
- {0xb080392cc4349dec, 0xbd8d794d96aacfb4},
- {0xdca04777f541c567, 0xecf0d7a0fc5583a1},
- {0x89e42caaf9491b60, 0xf41686c49db57245},
- {0xac5d37d5b79b6239, 0x311c2875c522ced6},
- {0xd77485cb25823ac7, 0x7d633293366b828c},
- {0x86a8d39ef77164bc, 0xae5dff9c02033198},
- {0xa8530886b54dbdeb, 0xd9f57f830283fdfd},
- {0xd267caa862a12d66, 0xd072df63c324fd7c},
- {0x8380dea93da4bc60, 0x4247cb9e59f71e6e},
- {0xa46116538d0deb78, 0x52d9be85f074e609},
- {0xcd795be870516656, 0x67902e276c921f8c},
- {0x806bd9714632dff6, 0x00ba1cd8a3db53b7},
- {0xa086cfcd97bf97f3, 0x80e8a40eccd228a5},
- {0xc8a883c0fdaf7df0, 0x6122cd128006b2ce},
- {0xfad2a4b13d1b5d6c, 0x796b805720085f82},
- {0x9cc3a6eec6311a63, 0xcbe3303674053bb1},
- {0xc3f490aa77bd60fc, 0xbedbfc4411068a9d},
- {0xf4f1b4d515acb93b, 0xee92fb5515482d45},
- {0x991711052d8bf3c5, 0x751bdd152d4d1c4b},
- {0xbf5cd54678eef0b6, 0xd262d45a78a0635e},
- {0xef340a98172aace4, 0x86fb897116c87c35},
- {0x9580869f0e7aac0e, 0xd45d35e6ae3d4da1},
- {0xbae0a846d2195712, 0x8974836059cca10a},
- {0xe998d258869facd7, 0x2bd1a438703fc94c},
- {0x91ff83775423cc06, 0x7b6306a34627ddd0},
- {0xb67f6455292cbf08, 0x1a3bc84c17b1d543},
- {0xe41f3d6a7377eeca, 0x20caba5f1d9e4a94},
- {0x8e938662882af53e, 0x547eb47b7282ee9d},
- {0xb23867fb2a35b28d, 0xe99e619a4f23aa44},
- {0xdec681f9f4c31f31, 0x6405fa00e2ec94d5},
- {0x8b3c113c38f9f37e, 0xde83bc408dd3dd05},
- {0xae0b158b4738705e, 0x9624ab50b148d446},
- {0xd98ddaee19068c76, 0x3badd624dd9b0958},
- {0x87f8a8d4cfa417c9, 0xe54ca5d70a80e5d7},
- {0xa9f6d30a038d1dbc, 0x5e9fcf4ccd211f4d},
- {0xd47487cc8470652b, 0x7647c32000696720},
- {0x84c8d4dfd2c63f3b, 0x29ecd9f40041e074},
- {0xa5fb0a17c777cf09, 0xf468107100525891},
- {0xcf79cc9db955c2cc, 0x7182148d4066eeb5},
- {0x81ac1fe293d599bf, 0xc6f14cd848405531},
- {0xa21727db38cb002f, 0xb8ada00e5a506a7d},
- {0xca9cf1d206fdc03b, 0xa6d90811f0e4851d},
- {0xfd442e4688bd304a, 0x908f4a166d1da664},
- {0x9e4a9cec15763e2e, 0x9a598e4e043287ff},
- {0xc5dd44271ad3cdba, 0x40eff1e1853f29fe},
- {0xf7549530e188c128, 0xd12bee59e68ef47d},
- {0x9a94dd3e8cf578b9, 0x82bb74f8301958cf},
- {0xc13a148e3032d6e7, 0xe36a52363c1faf02},
- {0xf18899b1bc3f8ca1, 0xdc44e6c3cb279ac2},
- {0x96f5600f15a7b7e5, 0x29ab103a5ef8c0ba},
- {0xbcb2b812db11a5de, 0x7415d448f6b6f0e8},
- {0xebdf661791d60f56, 0x111b495b3464ad22},
- {0x936b9fcebb25c995, 0xcab10dd900beec35},
- {0xb84687c269ef3bfb, 0x3d5d514f40eea743},
- {0xe65829b3046b0afa, 0x0cb4a5a3112a5113},
- {0x8ff71a0fe2c2e6dc, 0x47f0e785eaba72ac},
- {0xb3f4e093db73a093, 0x59ed216765690f57},
- {0xe0f218b8d25088b8, 0x306869c13ec3532d},
- {0x8c974f7383725573, 0x1e414218c73a13fc},
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- {0x899504ae72497eba, 0x6a06494a791c53a8},
- {0xabfa45da0edbde69, 0x0487db9d17636892},
- {0xd6f8d7509292d603, 0x45a9d2845d3c42b6},
- {0x865b86925b9bc5c2, 0x0b8a2392ba45a9b2},
- {0xa7f26836f282b732, 0x8e6cac7768d7141e},
- {0xd1ef0244af2364ff, 0x3207d795430cd926},
- {0x8335616aed761f1f, 0x7f44e6bd49e807b8},
- {0xa402b9c5a8d3a6e7, 0x5f16206c9c6209a6},
- {0xcd036837130890a1, 0x36dba887c37a8c0f},
- {0x802221226be55a64, 0xc2494954da2c9789},
- {0xa02aa96b06deb0fd, 0xf2db9baa10b7bd6c},
- {0xc83553c5c8965d3d, 0x6f92829494e5acc7},
- {0xfa42a8b73abbf48c, 0xcb772339ba1f17f9},
- {0x9c69a97284b578d7, 0xff2a760414536efb},
- {0xc38413cf25e2d70d, 0xfef5138519684aba},
- {0xf46518c2ef5b8cd1, 0x7eb258665fc25d69},
- {0x98bf2f79d5993802, 0xef2f773ffbd97a61},
- {0xbeeefb584aff8603, 0xaafb550ffacfd8fa},
- {0xeeaaba2e5dbf6784, 0x95ba2a53f983cf38},
- {0x952ab45cfa97a0b2, 0xdd945a747bf26183},
- {0xba756174393d88df, 0x94f971119aeef9e4},
- {0xe912b9d1478ceb17, 0x7a37cd5601aab85d},
- {0x91abb422ccb812ee, 0xac62e055c10ab33a},
- {0xb616a12b7fe617aa, 0x577b986b314d6009},
- {0xe39c49765fdf9d94, 0xed5a7e85fda0b80b},
- {0x8e41ade9fbebc27d, 0x14588f13be847307},
- {0xb1d219647ae6b31c, 0x596eb2d8ae258fc8},
- {0xde469fbd99a05fe3, 0x6fca5f8ed9aef3bb},
- {0x8aec23d680043bee, 0x25de7bb9480d5854},
- {0xada72ccc20054ae9, 0xaf561aa79a10ae6a},
- {0xd910f7ff28069da4, 0x1b2ba1518094da04},
- {0x87aa9aff79042286, 0x90fb44d2f05d0842},
- {0xa99541bf57452b28, 0x353a1607ac744a53},
- {0xd3fa922f2d1675f2, 0x42889b8997915ce8},
- {0x847c9b5d7c2e09b7, 0x69956135febada11},
- {0xa59bc234db398c25, 0x43fab9837e699095},
- {0xcf02b2c21207ef2e, 0x94f967e45e03f4bb},
- {0x8161afb94b44f57d, 0x1d1be0eebac278f5},
- {0xa1ba1ba79e1632dc, 0x6462d92a69731732},
- {0xca28a291859bbf93, 0x7d7b8f7503cfdcfe},
- {0xfcb2cb35e702af78, 0x5cda735244c3d43e},
- {0x9defbf01b061adab, 0x3a0888136afa64a7},
- {0xc56baec21c7a1916, 0x088aaa1845b8fdd0},
- {0xf6c69a72a3989f5b, 0x8aad549e57273d45},
- {0x9a3c2087a63f6399, 0x36ac54e2f678864b},
- {0xc0cb28a98fcf3c7f, 0x84576a1bb416a7dd},
- {0xf0fdf2d3f3c30b9f, 0x656d44a2a11c51d5},
- {0x969eb7c47859e743, 0x9f644ae5a4b1b325},
- {0xbc4665b596706114, 0x873d5d9f0dde1fee},
- {0xeb57ff22fc0c7959, 0xa90cb506d155a7ea},
- {0x9316ff75dd87cbd8, 0x09a7f12442d588f2},
- {0xb7dcbf5354e9bece, 0x0c11ed6d538aeb2f},
- {0xe5d3ef282a242e81, 0x8f1668c8a86da5fa},
- {0x8fa475791a569d10, 0xf96e017d694487bc},
- {0xb38d92d760ec4455, 0x37c981dcc395a9ac},
- {0xe070f78d3927556a, 0x85bbe253f47b1417},
- {0x8c469ab843b89562, 0x93956d7478ccec8e},
- {0xaf58416654a6babb, 0x387ac8d1970027b2},
- {0xdb2e51bfe9d0696a, 0x06997b05fcc0319e},
- {0x88fcf317f22241e2, 0x441fece3bdf81f03},
- {0xab3c2fddeeaad25a, 0xd527e81cad7626c3},
- {0xd60b3bd56a5586f1, 0x8a71e223d8d3b074},
- {0x85c7056562757456, 0xf6872d5667844e49},
- {0xa738c6bebb12d16c, 0xb428f8ac016561db},
- {0xd106f86e69d785c7, 0xe13336d701beba52},
- {0x82a45b450226b39c, 0xecc0024661173473},
- {0xa34d721642b06084, 0x27f002d7f95d0190},
- {0xcc20ce9bd35c78a5, 0x31ec038df7b441f4},
- {0xff290242c83396ce, 0x7e67047175a15271},
- {0x9f79a169bd203e41, 0x0f0062c6e984d386},
- {0xc75809c42c684dd1, 0x52c07b78a3e60868},
- {0xf92e0c3537826145, 0xa7709a56ccdf8a82},
- {0x9bbcc7a142b17ccb, 0x88a66076400bb691},
- {0xc2abf989935ddbfe, 0x6acff893d00ea435},
- {0xf356f7ebf83552fe, 0x0583f6b8c4124d43},
- {0x98165af37b2153de, 0xc3727a337a8b704a},
- {0xbe1bf1b059e9a8d6, 0x744f18c0592e4c5c},
- {0xeda2ee1c7064130c, 0x1162def06f79df73},
- {0x9485d4d1c63e8be7, 0x8addcb5645ac2ba8},
- {0xb9a74a0637ce2ee1, 0x6d953e2bd7173692},
- {0xe8111c87c5c1ba99, 0xc8fa8db6ccdd0437},
- {0x910ab1d4db9914a0, 0x1d9c9892400a22a2},
- {0xb54d5e4a127f59c8, 0x2503beb6d00cab4b},
- {0xe2a0b5dc971f303a, 0x2e44ae64840fd61d},
- {0x8da471a9de737e24, 0x5ceaecfed289e5d2},
- {0xb10d8e1456105dad, 0x7425a83e872c5f47},
- {0xdd50f1996b947518, 0xd12f124e28f77719},
- {0x8a5296ffe33cc92f, 0x82bd6b70d99aaa6f},
- {0xace73cbfdc0bfb7b, 0x636cc64d1001550b},
- {0xd8210befd30efa5a, 0x3c47f7e05401aa4e},
- {0x8714a775e3e95c78, 0x65acfaec34810a71},
- {0xa8d9d1535ce3b396, 0x7f1839a741a14d0d},
- {0xd31045a8341ca07c, 0x1ede48111209a050},
- {0x83ea2b892091e44d, 0x934aed0aab460432},
- {0xa4e4b66b68b65d60, 0xf81da84d5617853f},
- {0xce1de40642e3f4b9, 0x36251260ab9d668e},
- {0x80d2ae83e9ce78f3, 0xc1d72b7c6b426019},
- {0xa1075a24e4421730, 0xb24cf65b8612f81f},
- {0xc94930ae1d529cfc, 0xdee033f26797b627},
- {0xfb9b7cd9a4a7443c, 0x169840ef017da3b1},
- {0x9d412e0806e88aa5, 0x8e1f289560ee864e},
- {0xc491798a08a2ad4e, 0xf1a6f2bab92a27e2},
- {0xf5b5d7ec8acb58a2, 0xae10af696774b1db},
- {0x9991a6f3d6bf1765, 0xacca6da1e0a8ef29},
- {0xbff610b0cc6edd3f, 0x17fd090a58d32af3},
- {0xeff394dcff8a948e, 0xddfc4b4cef07f5b0},
- {0x95f83d0a1fb69cd9, 0x4abdaf101564f98e},
- {0xbb764c4ca7a4440f, 0x9d6d1ad41abe37f1},
- {0xea53df5fd18d5513, 0x84c86189216dc5ed},
- {0x92746b9be2f8552c, 0x32fd3cf5b4e49bb4},
- {0xb7118682dbb66a77, 0x3fbc8c33221dc2a1},
- {0xe4d5e82392a40515, 0x0fabaf3feaa5334a},
- {0x8f05b1163ba6832d, 0x29cb4d87f2a7400e},
- {0xb2c71d5bca9023f8, 0x743e20e9ef511012},
- {0xdf78e4b2bd342cf6, 0x914da9246b255416},
- {0x8bab8eefb6409c1a, 0x1ad089b6c2f7548e},
- {0xae9672aba3d0c320, 0xa184ac2473b529b1},
- {0xda3c0f568cc4f3e8, 0xc9e5d72d90a2741e},
- {0x8865899617fb1871, 0x7e2fa67c7a658892},
- {0xaa7eebfb9df9de8d, 0xddbb901b98feeab7},
- {0xd51ea6fa85785631, 0x552a74227f3ea565},
- {0x8533285c936b35de, 0xd53a88958f87275f},
- {0xa67ff273b8460356, 0x8a892abaf368f137},
- {0xd01fef10a657842c, 0x2d2b7569b0432d85},
- {0x8213f56a67f6b29b, 0x9c3b29620e29fc73},
- {0xa298f2c501f45f42, 0x8349f3ba91b47b8f},
- {0xcb3f2f7642717713, 0x241c70a936219a73},
- {0xfe0efb53d30dd4d7, 0xed238cd383aa0110},
- {0x9ec95d1463e8a506, 0xf4363804324a40aa},
- {0xc67bb4597ce2ce48, 0xb143c6053edcd0d5},
- {0xf81aa16fdc1b81da, 0xdd94b7868e94050a},
- {0x9b10a4e5e9913128, 0xca7cf2b4191c8326},
- {0xc1d4ce1f63f57d72, 0xfd1c2f611f63a3f0},
- {0xf24a01a73cf2dccf, 0xbc633b39673c8cec},
- {0x976e41088617ca01, 0xd5be0503e085d813},
- {0xbd49d14aa79dbc82, 0x4b2d8644d8a74e18},
- {0xec9c459d51852ba2, 0xddf8e7d60ed1219e},
- {0x93e1ab8252f33b45, 0xcabb90e5c942b503},
- {0xb8da1662e7b00a17, 0x3d6a751f3b936243},
- {0xe7109bfba19c0c9d, 0x0cc512670a783ad4},
- {0x906a617d450187e2, 0x27fb2b80668b24c5},
- {0xb484f9dc9641e9da, 0xb1f9f660802dedf6},
- {0xe1a63853bbd26451, 0x5e7873f8a0396973},
- {0x8d07e33455637eb2, 0xdb0b487b6423e1e8},
- {0xb049dc016abc5e5f, 0x91ce1a9a3d2cda62},
- {0xdc5c5301c56b75f7, 0x7641a140cc7810fb},
- {0x89b9b3e11b6329ba, 0xa9e904c87fcb0a9d},
- {0xac2820d9623bf429, 0x546345fa9fbdcd44},
- {0xd732290fbacaf133, 0xa97c177947ad4095},
- {0x867f59a9d4bed6c0, 0x49ed8eabcccc485d},
- {0xa81f301449ee8c70, 0x5c68f256bfff5a74},
- {0xd226fc195c6a2f8c, 0x73832eec6fff3111},
- {0x83585d8fd9c25db7, 0xc831fd53c5ff7eab},
- {0xa42e74f3d032f525, 0xba3e7ca8b77f5e55},
- {0xcd3a1230c43fb26f, 0x28ce1bd2e55f35eb},
- {0x80444b5e7aa7cf85, 0x7980d163cf5b81b3},
- {0xa0555e361951c366, 0xd7e105bcc332621f},
- {0xc86ab5c39fa63440, 0x8dd9472bf3fefaa7},
- {0xfa856334878fc150, 0xb14f98f6f0feb951},
- {0x9c935e00d4b9d8d2, 0x6ed1bf9a569f33d3},
- {0xc3b8358109e84f07, 0x0a862f80ec4700c8},
- {0xf4a642e14c6262c8, 0xcd27bb612758c0fa},
- {0x98e7e9cccfbd7dbd, 0x8038d51cb897789c},
- {0xbf21e44003acdd2c, 0xe0470a63e6bd56c3},
- {0xeeea5d5004981478, 0x1858ccfce06cac74},
- {0x95527a5202df0ccb, 0x0f37801e0c43ebc8},
- {0xbaa718e68396cffd, 0xd30560258f54e6ba},
- {0xe950df20247c83fd, 0x47c6b82ef32a2069},
- {0x91d28b7416cdd27e, 0x4cdc331d57fa5441},
- {0xb6472e511c81471d, 0xe0133fe4adf8e952},
- {0xe3d8f9e563a198e5, 0x58180fddd97723a6},
- {0x8e679c2f5e44ff8f, 0x570f09eaa7ea7648},
- {0xb201833b35d63f73, 0x2cd2cc6551e513da},
- {0xde81e40a034bcf4f, 0xf8077f7ea65e58d1},
- {0x8b112e86420f6191, 0xfb04afaf27faf782},
- {0xadd57a27d29339f6, 0x79c5db9af1f9b563},
- {0xd94ad8b1c7380874, 0x18375281ae7822bc},
- {0x87cec76f1c830548, 0x8f2293910d0b15b5},
- {0xa9c2794ae3a3c69a, 0xb2eb3875504ddb22},
- {0xd433179d9c8cb841, 0x5fa60692a46151eb},
- {0x849feec281d7f328, 0xdbc7c41ba6bcd333},
- {0xa5c7ea73224deff3, 0x12b9b522906c0800},
- {0xcf39e50feae16bef, 0xd768226b34870a00},
- {0x81842f29f2cce375, 0xe6a1158300d46640},
- {0xa1e53af46f801c53, 0x60495ae3c1097fd0},
- {0xca5e89b18b602368, 0x385bb19cb14bdfc4},
- {0xfcf62c1dee382c42, 0x46729e03dd9ed7b5},
- {0x9e19db92b4e31ba9, 0x6c07a2c26a8346d1},
- {0xc5a05277621be293, 0xc7098b7305241885},
- {0xf70867153aa2db38, 0xb8cbee4fc66d1ea7}
-#else
- {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b},
- {0xce5d73ff402d98e3, 0xfb0a3d212dc81290},
- {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f},
- {0x86a8d39ef77164bc, 0xae5dff9c02033198},
- {0xd98ddaee19068c76, 0x3badd624dd9b0958},
- {0xafbd2350644eeacf, 0xe5d1929ef90898fb},
- {0x8df5efabc5979c8f, 0xca8d3ffa1ef463c2},
- {0xe55990879ddcaabd, 0xcc420a6a101d0516},
- {0xb94470938fa89bce, 0xf808e40e8d5b3e6a},
- {0x95a8637627989aad, 0xdde7001379a44aa9},
- {0xf1c90080baf72cb1, 0x5324c68b12dd6339},
- {0xc350000000000000, 0x0000000000000000},
- {0x9dc5ada82b70b59d, 0xf020000000000000},
- {0xfee50b7025c36a08, 0x02f236d04753d5b4},
- {0xcde6fd5e09abcf26, 0xed4c0226b55e6f86},
- {0xa6539930bf6bff45, 0x84db8346b786151c},
- {0x865b86925b9bc5c2, 0x0b8a2392ba45a9b2},
- {0xd910f7ff28069da4, 0x1b2ba1518094da04},
- {0xaf58416654a6babb, 0x387ac8d1970027b2},
- {0x8da471a9de737e24, 0x5ceaecfed289e5d2},
- {0xe4d5e82392a40515, 0x0fabaf3feaa5334a},
- {0xb8da1662e7b00a17, 0x3d6a751f3b936243},
- {0x95527a5202df0ccb, 0x0f37801e0c43ebc8}
-#endif
-};
-
-#if !FMT_USE_FULL_CACHE_DRAGONBOX
-template <typename T>
-const uint64_t basic_data<T>::powers_of_5_64[] = {
- 0x0000000000000001, 0x0000000000000005, 0x0000000000000019,
- 0x000000000000007d, 0x0000000000000271, 0x0000000000000c35,
- 0x0000000000003d09, 0x000000000001312d, 0x000000000005f5e1,
- 0x00000000001dcd65, 0x00000000009502f9, 0x0000000002e90edd,
- 0x000000000e8d4a51, 0x0000000048c27395, 0x000000016bcc41e9,
- 0x000000071afd498d, 0x0000002386f26fc1, 0x000000b1a2bc2ec5,
- 0x000003782dace9d9, 0x00001158e460913d, 0x000056bc75e2d631,
- 0x0001b1ae4d6e2ef5, 0x000878678326eac9, 0x002a5a058fc295ed,
- 0x00d3c21bcecceda1, 0x0422ca8b0a00a425, 0x14adf4b7320334b9};
-
-template <typename T>
-const uint32_t basic_data<T>::dragonbox_pow10_recovery_errors[] = {
- 0x50001400, 0x54044100, 0x54014555, 0x55954415, 0x54115555, 0x00000001,
- 0x50000000, 0x00104000, 0x54010004, 0x05004001, 0x55555544, 0x41545555,
- 0x54040551, 0x15445545, 0x51555514, 0x10000015, 0x00101100, 0x01100015,
- 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x04450514, 0x45414110,
- 0x55555145, 0x50544050, 0x15040155, 0x11054140, 0x50111514, 0x11451454,
- 0x00400541, 0x00000000, 0x55555450, 0x10056551, 0x10054011, 0x55551014,
- 0x69514555, 0x05151109, 0x00155555};
+constexpr const char basic_data<T>::right_padding_shifts[];
#endif
-template <typename T>
-const char basic_data<T>::foreground_color[] = "\x1b[38;2;";
-template <typename T>
-const char basic_data<T>::background_color[] = "\x1b[48;2;";
-template <typename T> const char basic_data<T>::reset_color[] = "\x1b[0m";
-template <typename T> const wchar_t basic_data<T>::wreset_color[] = L"\x1b[0m";
-template <typename T> const char basic_data<T>::signs[] = {0, '-', '+', ' '};
-template <typename T>
-const char basic_data<T>::left_padding_shifts[] = {31, 31, 0, 1, 0};
-template <typename T>
-const char basic_data<T>::right_padding_shifts[] = {0, 31, 0, 1, 0};
-
template <typename T> struct bits {
static FMT_CONSTEXPR_DECL const int value =
static_cast<int>(sizeof(T) * std::numeric_limits<unsigned char>::digits);
// Returns a cached power of 10 `c_k = c_k.f * pow(2, c_k.e)` such that its
// (binary) exponent satisfies `min_exponent <= c_k.e <= min_exponent + 28`.
inline fp get_cached_power(int min_exponent, int& pow10_exponent) {
+ // Normalized 64-bit significands of pow(10, k), for k = -348, -340, ..., 340.
+ // These are generated by support/compute-powers.py.
+ static constexpr const uint64_t pow10_significands[] = {
+ 0xfa8fd5a0081c0288, 0xbaaee17fa23ebf76, 0x8b16fb203055ac76,
+ 0xcf42894a5dce35ea, 0x9a6bb0aa55653b2d, 0xe61acf033d1a45df,
+ 0xab70fe17c79ac6ca, 0xff77b1fcbebcdc4f, 0xbe5691ef416bd60c,
+ 0x8dd01fad907ffc3c, 0xd3515c2831559a83, 0x9d71ac8fada6c9b5,
+ 0xea9c227723ee8bcb, 0xaecc49914078536d, 0x823c12795db6ce57,
+ 0xc21094364dfb5637, 0x9096ea6f3848984f, 0xd77485cb25823ac7,
+ 0xa086cfcd97bf97f4, 0xef340a98172aace5, 0xb23867fb2a35b28e,
+ 0x84c8d4dfd2c63f3b, 0xc5dd44271ad3cdba, 0x936b9fcebb25c996,
+ 0xdbac6c247d62a584, 0xa3ab66580d5fdaf6, 0xf3e2f893dec3f126,
+ 0xb5b5ada8aaff80b8, 0x87625f056c7c4a8b, 0xc9bcff6034c13053,
+ 0x964e858c91ba2655, 0xdff9772470297ebd, 0xa6dfbd9fb8e5b88f,
+ 0xf8a95fcf88747d94, 0xb94470938fa89bcf, 0x8a08f0f8bf0f156b,
+ 0xcdb02555653131b6, 0x993fe2c6d07b7fac, 0xe45c10c42a2b3b06,
+ 0xaa242499697392d3, 0xfd87b5f28300ca0e, 0xbce5086492111aeb,
+ 0x8cbccc096f5088cc, 0xd1b71758e219652c, 0x9c40000000000000,
+ 0xe8d4a51000000000, 0xad78ebc5ac620000, 0x813f3978f8940984,
+ 0xc097ce7bc90715b3, 0x8f7e32ce7bea5c70, 0xd5d238a4abe98068,
+ 0x9f4f2726179a2245, 0xed63a231d4c4fb27, 0xb0de65388cc8ada8,
+ 0x83c7088e1aab65db, 0xc45d1df942711d9a, 0x924d692ca61be758,
+ 0xda01ee641a708dea, 0xa26da3999aef774a, 0xf209787bb47d6b85,
+ 0xb454e4a179dd1877, 0x865b86925b9bc5c2, 0xc83553c5c8965d3d,
+ 0x952ab45cfa97a0b3, 0xde469fbd99a05fe3, 0xa59bc234db398c25,
+ 0xf6c69a72a3989f5c, 0xb7dcbf5354e9bece, 0x88fcf317f22241e2,
+ 0xcc20ce9bd35c78a5, 0x98165af37b2153df, 0xe2a0b5dc971f303a,
+ 0xa8d9d1535ce3b396, 0xfb9b7cd9a4a7443c, 0xbb764c4ca7a44410,
+ 0x8bab8eefb6409c1a, 0xd01fef10a657842c, 0x9b10a4e5e9913129,
+ 0xe7109bfba19c0c9d, 0xac2820d9623bf429, 0x80444b5e7aa7cf85,
+ 0xbf21e44003acdd2d, 0x8e679c2f5e44ff8f, 0xd433179d9c8cb841,
+ 0x9e19db92b4e31ba9, 0xeb96bf6ebadf77d9, 0xaf87023b9bf0ee6b,
+ };
+
+ // Binary exponents of pow(10, k), for k = -348, -340, ..., 340, corresponding
+ // to significands above.
+ static constexpr const int16_t pow10_exponents[] = {
+ -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980, -954,
+ -927, -901, -874, -847, -821, -794, -768, -741, -715, -688, -661,
+ -635, -608, -582, -555, -529, -502, -475, -449, -422, -396, -369,
+ -343, -316, -289, -263, -236, -210, -183, -157, -130, -103, -77,
+ -50, -24, 3, 30, 56, 83, 109, 136, 162, 189, 216,
+ 242, 269, 295, 322, 348, 375, 402, 428, 455, 481, 508,
+ 534, 561, 588, 614, 641, 667, 694, 720, 747, 774, 800,
+ 827, 853, 880, 907, 933, 960, 986, 1013, 1039, 1066};
+
const int shift = 32;
const auto significand = static_cast<int64_t>(data::log10_2_significand);
int index = static_cast<int>(
const int dec_exp_step = 8;
index = (index - first_dec_exp - 1) / dec_exp_step + 1;
pow10_exponent = first_dec_exp + index * dec_exp_step;
- return {data::grisu_pow10_significands[index],
- data::grisu_pow10_exponents[index]};
+ return {pow10_significands[index], pow10_exponents[index]};
}
// A simple accumulator to hold the sums of terms in bigint::square if uint128_t
if (lower < n) ++upper;
}
void operator>>=(int shift) {
- assert(shift == 32);
+ FMT_ASSERT(shift == 32, "");
(void)shift;
lower = (upper << 32) | (lower >> 32);
upper >>= 32;
public:
bigint() : exp_(0) {}
explicit bigint(uint64_t n) { assign(n); }
- ~bigint() { assert(bigits_.capacity() <= bigits_capacity); }
+ ~bigint() { FMT_ASSERT(bigits_.capacity() <= bigits_capacity, ""); }
bigint(const bigint&) = delete;
void operator=(const bigint&) = delete;
int num_bigits() const { return static_cast<int>(bigits_.size()) + exp_; }
FMT_NOINLINE bigint& operator<<=(int shift) {
- assert(shift >= 0);
+ FMT_ASSERT(shift >= 0, "");
exp_ += shift / bigit_bits;
shift %= bigit_bits;
if (shift == 0) return *this;
// Assigns pow(10, exp) to this bigint.
void assign_pow10(int exp) {
- assert(exp >= 0);
+ FMT_ASSERT(exp >= 0, "");
if (exp == 0) return assign(1);
// Find the top bit.
int bitmask = 1;
}
void square() {
- basic_memory_buffer<bigit, bigits_capacity> n(std::move(bigits_));
int num_bigits = static_cast<int>(bigits_.size());
int num_result_bigits = 2 * num_bigits;
+ basic_memory_buffer<bigit, bigits_capacity> n(std::move(bigits_));
bigits_.resize(to_unsigned(num_result_bigits));
using accumulator_t = conditional_t<FMT_USE_INT128, uint128_t, accumulator>;
auto sum = accumulator_t();
(*this)[bigit_index] = static_cast<bigit>(sum);
sum >>= bits<bigit>::value;
}
- --num_result_bigits;
remove_leading_zeros();
exp_ *= 2;
}
};
}
+inline uint64_t power_of_10_64(int exp) {
+ static constexpr const uint64_t data[] = {1, FMT_POWERS_OF_10(1),
+ FMT_POWERS_OF_10(1000000000ULL),
+ 10000000000000000000ULL};
+ return data[exp];
+}
+
// Generates output using the Grisu digit-gen algorithm.
// error: the size of the region (lower, upper) outside of which numbers
// definitely do not round to value (Delta in Grisu3).
template <typename Handler>
-FMT_ALWAYS_INLINE digits::result grisu_gen_digits(fp value, uint64_t error,
- int& exp, Handler& handler) {
+FMT_INLINE digits::result grisu_gen_digits(fp value, uint64_t error, int& exp,
+ Handler& handler) {
const fp one(1ULL << -value.e, value.e);
// The integral part of scaled value (p1 in Grisu) = value / one. It cannot be
// zero because it contains a product of two 64-bit numbers with MSB set (due
uint64_t fractional = value.f & (one.f - 1);
exp = count_digits(integral); // kappa in Grisu.
// Divide by 10 to prevent overflow.
- auto result = handler.on_start(data::powers_of_10_64[exp - 1] << -one.e,
+ auto result = handler.on_start(power_of_10_64(exp - 1) << -one.e,
value.f / 10, error * 10, exp);
if (result != digits::more) return result;
// Generate digits for the integral part. This can produce up to 10 digits.
--exp;
auto remainder = (static_cast<uint64_t>(integral) << -one.e) + fractional;
result = handler.on_digit(static_cast<char>('0' + digit),
- data::powers_of_10_64[exp] << -one.e, remainder,
- error, exp, true);
+ power_of_10_64(exp) << -one.e, remainder, error,
+ exp, true);
if (result != digits::more) return result;
} while (exp > 0);
// Generate digits for the fractional part.
}
};
+// A 128-bit integer type used internally,
+struct uint128_wrapper {
+ uint128_wrapper() = default;
+
+#if FMT_USE_INT128
+ uint128_t internal_;
+
+ constexpr uint128_wrapper(uint64_t high, uint64_t low) FMT_NOEXCEPT
+ : internal_{static_cast<uint128_t>(low) |
+ (static_cast<uint128_t>(high) << 64)} {}
+
+ constexpr uint128_wrapper(uint128_t u) : internal_{u} {}
+
+ constexpr uint64_t high() const FMT_NOEXCEPT {
+ return uint64_t(internal_ >> 64);
+ }
+ constexpr uint64_t low() const FMT_NOEXCEPT { return uint64_t(internal_); }
+
+ uint128_wrapper& operator+=(uint64_t n) FMT_NOEXCEPT {
+ internal_ += n;
+ return *this;
+ }
+#else
+ uint64_t high_;
+ uint64_t low_;
+
+ constexpr uint128_wrapper(uint64_t high, uint64_t low) FMT_NOEXCEPT
+ : high_{high},
+ low_{low} {}
+
+ constexpr uint64_t high() const FMT_NOEXCEPT { return high_; }
+ constexpr uint64_t low() const FMT_NOEXCEPT { return low_; }
+
+ uint128_wrapper& operator+=(uint64_t n) FMT_NOEXCEPT {
+# if defined(_MSC_VER) && defined(_M_X64)
+ unsigned char carry = _addcarry_u64(0, low_, n, &low_);
+ _addcarry_u64(carry, high_, 0, &high_);
+ return *this;
+# else
+ uint64_t sum = low_ + n;
+ high_ += (sum < low_ ? 1 : 0);
+ low_ = sum;
+ return *this;
+# endif
+ }
+#endif
+};
+
// Implementation of Dragonbox algorithm: https://github.com/jk-jeon/dragonbox.
namespace dragonbox {
// Computes 128-bit result of multiplication of two 64-bit unsigned integers.
-FMT_SAFEBUFFERS inline uint128_wrapper umul128(uint64_t x,
- uint64_t y) FMT_NOEXCEPT {
+inline uint128_wrapper umul128(uint64_t x, uint64_t y) FMT_NOEXCEPT {
#if FMT_USE_INT128
return static_cast<uint128_t>(x) * static_cast<uint128_t>(y);
#elif defined(_MSC_VER) && defined(_M_X64)
}
// Computes upper 64 bits of multiplication of two 64-bit unsigned integers.
-FMT_SAFEBUFFERS inline uint64_t umul128_upper64(uint64_t x,
- uint64_t y) FMT_NOEXCEPT {
+inline uint64_t umul128_upper64(uint64_t x, uint64_t y) FMT_NOEXCEPT {
#if FMT_USE_INT128
auto p = static_cast<uint128_t>(x) * static_cast<uint128_t>(y);
return static_cast<uint64_t>(p >> 64);
// Computes upper 64 bits of multiplication of a 64-bit unsigned integer and a
// 128-bit unsigned integer.
-FMT_SAFEBUFFERS inline uint64_t umul192_upper64(uint64_t x, uint128_wrapper y)
- FMT_NOEXCEPT {
+inline uint64_t umul192_upper64(uint64_t x, uint128_wrapper y) FMT_NOEXCEPT {
uint128_wrapper g0 = umul128(x, y.high());
g0 += umul128_upper64(x, y.low());
return g0.high();
// Computes middle 64 bits of multiplication of a 64-bit unsigned integer and a
// 128-bit unsigned integer.
-FMT_SAFEBUFFERS inline uint64_t umul192_middle64(uint64_t x, uint128_wrapper y)
- FMT_NOEXCEPT {
+inline uint64_t umul192_middle64(uint64_t x, uint128_wrapper y) FMT_NOEXCEPT {
uint64_t g01 = x * y.high();
uint64_t g10 = umul128_upper64(x, y.low());
return g01 + g10;
#endif
}
+// Table entry type for divisibility test.
+template <typename T> struct divtest_table_entry {
+ T mod_inv;
+ T max_quotient;
+};
+
// Returns true iff x is divisible by pow(5, exp).
inline bool divisible_by_power_of_5(uint32_t x, int exp) FMT_NOEXCEPT {
FMT_ASSERT(exp <= 10, "too large exponent");
- return x * data::divtest_table_for_pow5_32[exp].mod_inv <=
- data::divtest_table_for_pow5_32[exp].max_quotient;
+ static constexpr const divtest_table_entry<uint32_t> divtest_table[] = {
+ {0x00000001, 0xffffffff}, {0xcccccccd, 0x33333333},
+ {0xc28f5c29, 0x0a3d70a3}, {0x26e978d5, 0x020c49ba},
+ {0x3afb7e91, 0x0068db8b}, {0x0bcbe61d, 0x0014f8b5},
+ {0x68c26139, 0x000431bd}, {0xae8d46a5, 0x0000d6bf},
+ {0x22e90e21, 0x00002af3}, {0x3a2e9c6d, 0x00000897},
+ {0x3ed61f49, 0x000001b7}};
+ return x * divtest_table[exp].mod_inv <= divtest_table[exp].max_quotient;
}
inline bool divisible_by_power_of_5(uint64_t x, int exp) FMT_NOEXCEPT {
FMT_ASSERT(exp <= 23, "too large exponent");
- return x * data::divtest_table_for_pow5_64[exp].mod_inv <=
- data::divtest_table_for_pow5_64[exp].max_quotient;
+ static constexpr const divtest_table_entry<uint64_t> divtest_table[] = {
+ {0x0000000000000001, 0xffffffffffffffff},
+ {0xcccccccccccccccd, 0x3333333333333333},
+ {0x8f5c28f5c28f5c29, 0x0a3d70a3d70a3d70},
+ {0x1cac083126e978d5, 0x020c49ba5e353f7c},
+ {0xd288ce703afb7e91, 0x0068db8bac710cb2},
+ {0x5d4e8fb00bcbe61d, 0x0014f8b588e368f0},
+ {0x790fb65668c26139, 0x000431bde82d7b63},
+ {0xe5032477ae8d46a5, 0x0000d6bf94d5e57a},
+ {0xc767074b22e90e21, 0x00002af31dc46118},
+ {0x8e47ce423a2e9c6d, 0x0000089705f4136b},
+ {0x4fa7f60d3ed61f49, 0x000001b7cdfd9d7b},
+ {0x0fee64690c913975, 0x00000057f5ff85e5},
+ {0x3662e0e1cf503eb1, 0x000000119799812d},
+ {0xa47a2cf9f6433fbd, 0x0000000384b84d09},
+ {0x54186f653140a659, 0x00000000b424dc35},
+ {0x7738164770402145, 0x0000000024075f3d},
+ {0xe4a4d1417cd9a041, 0x000000000734aca5},
+ {0xc75429d9e5c5200d, 0x000000000170ef54},
+ {0xc1773b91fac10669, 0x000000000049c977},
+ {0x26b172506559ce15, 0x00000000000ec1e4},
+ {0xd489e3a9addec2d1, 0x000000000002f394},
+ {0x90e860bb892c8d5d, 0x000000000000971d},
+ {0x502e79bf1b6f4f79, 0x0000000000001e39},
+ {0xdcd618596be30fe5, 0x000000000000060b}};
+ return x * divtest_table[exp].mod_inv <= divtest_table[exp].max_quotient;
}
// Replaces n by floor(n / pow(5, N)) returning true if and only if n is
static uint64_t get_cached_power(int k) FMT_NOEXCEPT {
FMT_ASSERT(k >= float_info<float>::min_k && k <= float_info<float>::max_k,
"k is out of range");
- return data::dragonbox_pow10_significands_64[k - float_info<float>::min_k];
+ constexpr const uint64_t pow10_significands[] = {
+ 0x81ceb32c4b43fcf5, 0xa2425ff75e14fc32, 0xcad2f7f5359a3b3f,
+ 0xfd87b5f28300ca0e, 0x9e74d1b791e07e49, 0xc612062576589ddb,
+ 0xf79687aed3eec552, 0x9abe14cd44753b53, 0xc16d9a0095928a28,
+ 0xf1c90080baf72cb2, 0x971da05074da7bef, 0xbce5086492111aeb,
+ 0xec1e4a7db69561a6, 0x9392ee8e921d5d08, 0xb877aa3236a4b44a,
+ 0xe69594bec44de15c, 0x901d7cf73ab0acda, 0xb424dc35095cd810,
+ 0xe12e13424bb40e14, 0x8cbccc096f5088cc, 0xafebff0bcb24aaff,
+ 0xdbe6fecebdedd5bf, 0x89705f4136b4a598, 0xabcc77118461cefd,
+ 0xd6bf94d5e57a42bd, 0x8637bd05af6c69b6, 0xa7c5ac471b478424,
+ 0xd1b71758e219652c, 0x83126e978d4fdf3c, 0xa3d70a3d70a3d70b,
+ 0xcccccccccccccccd, 0x8000000000000000, 0xa000000000000000,
+ 0xc800000000000000, 0xfa00000000000000, 0x9c40000000000000,
+ 0xc350000000000000, 0xf424000000000000, 0x9896800000000000,
+ 0xbebc200000000000, 0xee6b280000000000, 0x9502f90000000000,
+ 0xba43b74000000000, 0xe8d4a51000000000, 0x9184e72a00000000,
+ 0xb5e620f480000000, 0xe35fa931a0000000, 0x8e1bc9bf04000000,
+ 0xb1a2bc2ec5000000, 0xde0b6b3a76400000, 0x8ac7230489e80000,
+ 0xad78ebc5ac620000, 0xd8d726b7177a8000, 0x878678326eac9000,
+ 0xa968163f0a57b400, 0xd3c21bcecceda100, 0x84595161401484a0,
+ 0xa56fa5b99019a5c8, 0xcecb8f27f4200f3a, 0x813f3978f8940984,
+ 0xa18f07d736b90be5, 0xc9f2c9cd04674ede, 0xfc6f7c4045812296,
+ 0x9dc5ada82b70b59d, 0xc5371912364ce305, 0xf684df56c3e01bc6,
+ 0x9a130b963a6c115c, 0xc097ce7bc90715b3, 0xf0bdc21abb48db20,
+ 0x96769950b50d88f4, 0xbc143fa4e250eb31, 0xeb194f8e1ae525fd,
+ 0x92efd1b8d0cf37be, 0xb7abc627050305ad, 0xe596b7b0c643c719,
+ 0x8f7e32ce7bea5c6f, 0xb35dbf821ae4f38b, 0xe0352f62a19e306e};
+ return pow10_significands[k - float_info<float>::min_k];
}
static carrier_uint compute_mul(carrier_uint u,
FMT_ASSERT(k >= float_info<double>::min_k && k <= float_info<double>::max_k,
"k is out of range");
+ static constexpr const uint128_wrapper pow10_significands[] = {
#if FMT_USE_FULL_CACHE_DRAGONBOX
- return data::dragonbox_pow10_significands_128[k -
- float_info<double>::min_k];
+ {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b},
+ {0x9faacf3df73609b1, 0x77b191618c54e9ad},
+ {0xc795830d75038c1d, 0xd59df5b9ef6a2418},
+ {0xf97ae3d0d2446f25, 0x4b0573286b44ad1e},
+ {0x9becce62836ac577, 0x4ee367f9430aec33},
+ {0xc2e801fb244576d5, 0x229c41f793cda740},
+ {0xf3a20279ed56d48a, 0x6b43527578c11110},
+ {0x9845418c345644d6, 0x830a13896b78aaaa},
+ {0xbe5691ef416bd60c, 0x23cc986bc656d554},
+ {0xedec366b11c6cb8f, 0x2cbfbe86b7ec8aa9},
+ {0x94b3a202eb1c3f39, 0x7bf7d71432f3d6aa},
+ {0xb9e08a83a5e34f07, 0xdaf5ccd93fb0cc54},
+ {0xe858ad248f5c22c9, 0xd1b3400f8f9cff69},
+ {0x91376c36d99995be, 0x23100809b9c21fa2},
+ {0xb58547448ffffb2d, 0xabd40a0c2832a78b},
+ {0xe2e69915b3fff9f9, 0x16c90c8f323f516d},
+ {0x8dd01fad907ffc3b, 0xae3da7d97f6792e4},
+ {0xb1442798f49ffb4a, 0x99cd11cfdf41779d},
+ {0xdd95317f31c7fa1d, 0x40405643d711d584},
+ {0x8a7d3eef7f1cfc52, 0x482835ea666b2573},
+ {0xad1c8eab5ee43b66, 0xda3243650005eed0},
+ {0xd863b256369d4a40, 0x90bed43e40076a83},
+ {0x873e4f75e2224e68, 0x5a7744a6e804a292},
+ {0xa90de3535aaae202, 0x711515d0a205cb37},
+ {0xd3515c2831559a83, 0x0d5a5b44ca873e04},
+ {0x8412d9991ed58091, 0xe858790afe9486c3},
+ {0xa5178fff668ae0b6, 0x626e974dbe39a873},
+ {0xce5d73ff402d98e3, 0xfb0a3d212dc81290},
+ {0x80fa687f881c7f8e, 0x7ce66634bc9d0b9a},
+ {0xa139029f6a239f72, 0x1c1fffc1ebc44e81},
+ {0xc987434744ac874e, 0xa327ffb266b56221},
+ {0xfbe9141915d7a922, 0x4bf1ff9f0062baa9},
+ {0x9d71ac8fada6c9b5, 0x6f773fc3603db4aa},
+ {0xc4ce17b399107c22, 0xcb550fb4384d21d4},
+ {0xf6019da07f549b2b, 0x7e2a53a146606a49},
+ {0x99c102844f94e0fb, 0x2eda7444cbfc426e},
+ {0xc0314325637a1939, 0xfa911155fefb5309},
+ {0xf03d93eebc589f88, 0x793555ab7eba27cb},
+ {0x96267c7535b763b5, 0x4bc1558b2f3458df},
+ {0xbbb01b9283253ca2, 0x9eb1aaedfb016f17},
+ {0xea9c227723ee8bcb, 0x465e15a979c1cadd},
+ {0x92a1958a7675175f, 0x0bfacd89ec191eca},
+ {0xb749faed14125d36, 0xcef980ec671f667c},
+ {0xe51c79a85916f484, 0x82b7e12780e7401b},
+ {0x8f31cc0937ae58d2, 0xd1b2ecb8b0908811},
+ {0xb2fe3f0b8599ef07, 0x861fa7e6dcb4aa16},
+ {0xdfbdcece67006ac9, 0x67a791e093e1d49b},
+ {0x8bd6a141006042bd, 0xe0c8bb2c5c6d24e1},
+ {0xaecc49914078536d, 0x58fae9f773886e19},
+ {0xda7f5bf590966848, 0xaf39a475506a899f},
+ {0x888f99797a5e012d, 0x6d8406c952429604},
+ {0xaab37fd7d8f58178, 0xc8e5087ba6d33b84},
+ {0xd5605fcdcf32e1d6, 0xfb1e4a9a90880a65},
+ {0x855c3be0a17fcd26, 0x5cf2eea09a550680},
+ {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f},
+ {0xd0601d8efc57b08b, 0xf13b94daf124da27},
+ {0x823c12795db6ce57, 0x76c53d08d6b70859},
+ {0xa2cb1717b52481ed, 0x54768c4b0c64ca6f},
+ {0xcb7ddcdda26da268, 0xa9942f5dcf7dfd0a},
+ {0xfe5d54150b090b02, 0xd3f93b35435d7c4d},
+ {0x9efa548d26e5a6e1, 0xc47bc5014a1a6db0},
+ {0xc6b8e9b0709f109a, 0x359ab6419ca1091c},
+ {0xf867241c8cc6d4c0, 0xc30163d203c94b63},
+ {0x9b407691d7fc44f8, 0x79e0de63425dcf1e},
+ {0xc21094364dfb5636, 0x985915fc12f542e5},
+ {0xf294b943e17a2bc4, 0x3e6f5b7b17b2939e},
+ {0x979cf3ca6cec5b5a, 0xa705992ceecf9c43},
+ {0xbd8430bd08277231, 0x50c6ff782a838354},
+ {0xece53cec4a314ebd, 0xa4f8bf5635246429},
+ {0x940f4613ae5ed136, 0x871b7795e136be9a},
+ {0xb913179899f68584, 0x28e2557b59846e40},
+ {0xe757dd7ec07426e5, 0x331aeada2fe589d0},
+ {0x9096ea6f3848984f, 0x3ff0d2c85def7622},
+ {0xb4bca50b065abe63, 0x0fed077a756b53aa},
+ {0xe1ebce4dc7f16dfb, 0xd3e8495912c62895},
+ {0x8d3360f09cf6e4bd, 0x64712dd7abbbd95d},
+ {0xb080392cc4349dec, 0xbd8d794d96aacfb4},
+ {0xdca04777f541c567, 0xecf0d7a0fc5583a1},
+ {0x89e42caaf9491b60, 0xf41686c49db57245},
+ {0xac5d37d5b79b6239, 0x311c2875c522ced6},
+ {0xd77485cb25823ac7, 0x7d633293366b828c},
+ {0x86a8d39ef77164bc, 0xae5dff9c02033198},
+ {0xa8530886b54dbdeb, 0xd9f57f830283fdfd},
+ {0xd267caa862a12d66, 0xd072df63c324fd7c},
+ {0x8380dea93da4bc60, 0x4247cb9e59f71e6e},
+ {0xa46116538d0deb78, 0x52d9be85f074e609},
+ {0xcd795be870516656, 0x67902e276c921f8c},
+ {0x806bd9714632dff6, 0x00ba1cd8a3db53b7},
+ {0xa086cfcd97bf97f3, 0x80e8a40eccd228a5},
+ {0xc8a883c0fdaf7df0, 0x6122cd128006b2ce},
+ {0xfad2a4b13d1b5d6c, 0x796b805720085f82},
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+ {0xf5746577930d6500, 0xca8f44ec7ee36479},
+ {0x9968bf6abbe85f20, 0x7e998b13cf4e1ecb},
+ {0xbfc2ef456ae276e8, 0x9e3fedd8c321a67e},
+ {0xefb3ab16c59b14a2, 0xc5cfe94ef3ea101e},
+ {0x95d04aee3b80ece5, 0xbba1f1d158724a12},
+ {0xbb445da9ca61281f, 0x2a8a6e45ae8edc97},
+ {0xea1575143cf97226, 0xf52d09d71a3293bd},
+ {0x924d692ca61be758, 0x593c2626705f9c56},
+ {0xb6e0c377cfa2e12e, 0x6f8b2fb00c77836c},
+ {0xe498f455c38b997a, 0x0b6dfb9c0f956447},
+ {0x8edf98b59a373fec, 0x4724bd4189bd5eac},
+ {0xb2977ee300c50fe7, 0x58edec91ec2cb657},
+ {0xdf3d5e9bc0f653e1, 0x2f2967b66737e3ed},
+ {0x8b865b215899f46c, 0xbd79e0d20082ee74},
+ {0xae67f1e9aec07187, 0xecd8590680a3aa11},
+ {0xda01ee641a708de9, 0xe80e6f4820cc9495},
+ {0x884134fe908658b2, 0x3109058d147fdcdd},
+ {0xaa51823e34a7eede, 0xbd4b46f0599fd415},
+ {0xd4e5e2cdc1d1ea96, 0x6c9e18ac7007c91a},
+ {0x850fadc09923329e, 0x03e2cf6bc604ddb0},
+ {0xa6539930bf6bff45, 0x84db8346b786151c},
+ {0xcfe87f7cef46ff16, 0xe612641865679a63},
+ {0x81f14fae158c5f6e, 0x4fcb7e8f3f60c07e},
+ {0xa26da3999aef7749, 0xe3be5e330f38f09d},
+ {0xcb090c8001ab551c, 0x5cadf5bfd3072cc5},
+ {0xfdcb4fa002162a63, 0x73d9732fc7c8f7f6},
+ {0x9e9f11c4014dda7e, 0x2867e7fddcdd9afa},
+ {0xc646d63501a1511d, 0xb281e1fd541501b8},
+ {0xf7d88bc24209a565, 0x1f225a7ca91a4226},
+ {0x9ae757596946075f, 0x3375788de9b06958},
+ {0xc1a12d2fc3978937, 0x0052d6b1641c83ae},
+ {0xf209787bb47d6b84, 0xc0678c5dbd23a49a},
+ {0x9745eb4d50ce6332, 0xf840b7ba963646e0},
+ {0xbd176620a501fbff, 0xb650e5a93bc3d898},
+ {0xec5d3fa8ce427aff, 0xa3e51f138ab4cebe},
+ {0x93ba47c980e98cdf, 0xc66f336c36b10137},
+ {0xb8a8d9bbe123f017, 0xb80b0047445d4184},
+ {0xe6d3102ad96cec1d, 0xa60dc059157491e5},
+ {0x9043ea1ac7e41392, 0x87c89837ad68db2f},
+ {0xb454e4a179dd1877, 0x29babe4598c311fb},
+ {0xe16a1dc9d8545e94, 0xf4296dd6fef3d67a},
+ {0x8ce2529e2734bb1d, 0x1899e4a65f58660c},
+ {0xb01ae745b101e9e4, 0x5ec05dcff72e7f8f},
+ {0xdc21a1171d42645d, 0x76707543f4fa1f73},
+ {0x899504ae72497eba, 0x6a06494a791c53a8},
+ {0xabfa45da0edbde69, 0x0487db9d17636892},
+ {0xd6f8d7509292d603, 0x45a9d2845d3c42b6},
+ {0x865b86925b9bc5c2, 0x0b8a2392ba45a9b2},
+ {0xa7f26836f282b732, 0x8e6cac7768d7141e},
+ {0xd1ef0244af2364ff, 0x3207d795430cd926},
+ {0x8335616aed761f1f, 0x7f44e6bd49e807b8},
+ {0xa402b9c5a8d3a6e7, 0x5f16206c9c6209a6},
+ {0xcd036837130890a1, 0x36dba887c37a8c0f},
+ {0x802221226be55a64, 0xc2494954da2c9789},
+ {0xa02aa96b06deb0fd, 0xf2db9baa10b7bd6c},
+ {0xc83553c5c8965d3d, 0x6f92829494e5acc7},
+ {0xfa42a8b73abbf48c, 0xcb772339ba1f17f9},
+ {0x9c69a97284b578d7, 0xff2a760414536efb},
+ {0xc38413cf25e2d70d, 0xfef5138519684aba},
+ {0xf46518c2ef5b8cd1, 0x7eb258665fc25d69},
+ {0x98bf2f79d5993802, 0xef2f773ffbd97a61},
+ {0xbeeefb584aff8603, 0xaafb550ffacfd8fa},
+ {0xeeaaba2e5dbf6784, 0x95ba2a53f983cf38},
+ {0x952ab45cfa97a0b2, 0xdd945a747bf26183},
+ {0xba756174393d88df, 0x94f971119aeef9e4},
+ {0xe912b9d1478ceb17, 0x7a37cd5601aab85d},
+ {0x91abb422ccb812ee, 0xac62e055c10ab33a},
+ {0xb616a12b7fe617aa, 0x577b986b314d6009},
+ {0xe39c49765fdf9d94, 0xed5a7e85fda0b80b},
+ {0x8e41ade9fbebc27d, 0x14588f13be847307},
+ {0xb1d219647ae6b31c, 0x596eb2d8ae258fc8},
+ {0xde469fbd99a05fe3, 0x6fca5f8ed9aef3bb},
+ {0x8aec23d680043bee, 0x25de7bb9480d5854},
+ {0xada72ccc20054ae9, 0xaf561aa79a10ae6a},
+ {0xd910f7ff28069da4, 0x1b2ba1518094da04},
+ {0x87aa9aff79042286, 0x90fb44d2f05d0842},
+ {0xa99541bf57452b28, 0x353a1607ac744a53},
+ {0xd3fa922f2d1675f2, 0x42889b8997915ce8},
+ {0x847c9b5d7c2e09b7, 0x69956135febada11},
+ {0xa59bc234db398c25, 0x43fab9837e699095},
+ {0xcf02b2c21207ef2e, 0x94f967e45e03f4bb},
+ {0x8161afb94b44f57d, 0x1d1be0eebac278f5},
+ {0xa1ba1ba79e1632dc, 0x6462d92a69731732},
+ {0xca28a291859bbf93, 0x7d7b8f7503cfdcfe},
+ {0xfcb2cb35e702af78, 0x5cda735244c3d43e},
+ {0x9defbf01b061adab, 0x3a0888136afa64a7},
+ {0xc56baec21c7a1916, 0x088aaa1845b8fdd0},
+ {0xf6c69a72a3989f5b, 0x8aad549e57273d45},
+ {0x9a3c2087a63f6399, 0x36ac54e2f678864b},
+ {0xc0cb28a98fcf3c7f, 0x84576a1bb416a7dd},
+ {0xf0fdf2d3f3c30b9f, 0x656d44a2a11c51d5},
+ {0x969eb7c47859e743, 0x9f644ae5a4b1b325},
+ {0xbc4665b596706114, 0x873d5d9f0dde1fee},
+ {0xeb57ff22fc0c7959, 0xa90cb506d155a7ea},
+ {0x9316ff75dd87cbd8, 0x09a7f12442d588f2},
+ {0xb7dcbf5354e9bece, 0x0c11ed6d538aeb2f},
+ {0xe5d3ef282a242e81, 0x8f1668c8a86da5fa},
+ {0x8fa475791a569d10, 0xf96e017d694487bc},
+ {0xb38d92d760ec4455, 0x37c981dcc395a9ac},
+ {0xe070f78d3927556a, 0x85bbe253f47b1417},
+ {0x8c469ab843b89562, 0x93956d7478ccec8e},
+ {0xaf58416654a6babb, 0x387ac8d1970027b2},
+ {0xdb2e51bfe9d0696a, 0x06997b05fcc0319e},
+ {0x88fcf317f22241e2, 0x441fece3bdf81f03},
+ {0xab3c2fddeeaad25a, 0xd527e81cad7626c3},
+ {0xd60b3bd56a5586f1, 0x8a71e223d8d3b074},
+ {0x85c7056562757456, 0xf6872d5667844e49},
+ {0xa738c6bebb12d16c, 0xb428f8ac016561db},
+ {0xd106f86e69d785c7, 0xe13336d701beba52},
+ {0x82a45b450226b39c, 0xecc0024661173473},
+ {0xa34d721642b06084, 0x27f002d7f95d0190},
+ {0xcc20ce9bd35c78a5, 0x31ec038df7b441f4},
+ {0xff290242c83396ce, 0x7e67047175a15271},
+ {0x9f79a169bd203e41, 0x0f0062c6e984d386},
+ {0xc75809c42c684dd1, 0x52c07b78a3e60868},
+ {0xf92e0c3537826145, 0xa7709a56ccdf8a82},
+ {0x9bbcc7a142b17ccb, 0x88a66076400bb691},
+ {0xc2abf989935ddbfe, 0x6acff893d00ea435},
+ {0xf356f7ebf83552fe, 0x0583f6b8c4124d43},
+ {0x98165af37b2153de, 0xc3727a337a8b704a},
+ {0xbe1bf1b059e9a8d6, 0x744f18c0592e4c5c},
+ {0xeda2ee1c7064130c, 0x1162def06f79df73},
+ {0x9485d4d1c63e8be7, 0x8addcb5645ac2ba8},
+ {0xb9a74a0637ce2ee1, 0x6d953e2bd7173692},
+ {0xe8111c87c5c1ba99, 0xc8fa8db6ccdd0437},
+ {0x910ab1d4db9914a0, 0x1d9c9892400a22a2},
+ {0xb54d5e4a127f59c8, 0x2503beb6d00cab4b},
+ {0xe2a0b5dc971f303a, 0x2e44ae64840fd61d},
+ {0x8da471a9de737e24, 0x5ceaecfed289e5d2},
+ {0xb10d8e1456105dad, 0x7425a83e872c5f47},
+ {0xdd50f1996b947518, 0xd12f124e28f77719},
+ {0x8a5296ffe33cc92f, 0x82bd6b70d99aaa6f},
+ {0xace73cbfdc0bfb7b, 0x636cc64d1001550b},
+ {0xd8210befd30efa5a, 0x3c47f7e05401aa4e},
+ {0x8714a775e3e95c78, 0x65acfaec34810a71},
+ {0xa8d9d1535ce3b396, 0x7f1839a741a14d0d},
+ {0xd31045a8341ca07c, 0x1ede48111209a050},
+ {0x83ea2b892091e44d, 0x934aed0aab460432},
+ {0xa4e4b66b68b65d60, 0xf81da84d5617853f},
+ {0xce1de40642e3f4b9, 0x36251260ab9d668e},
+ {0x80d2ae83e9ce78f3, 0xc1d72b7c6b426019},
+ {0xa1075a24e4421730, 0xb24cf65b8612f81f},
+ {0xc94930ae1d529cfc, 0xdee033f26797b627},
+ {0xfb9b7cd9a4a7443c, 0x169840ef017da3b1},
+ {0x9d412e0806e88aa5, 0x8e1f289560ee864e},
+ {0xc491798a08a2ad4e, 0xf1a6f2bab92a27e2},
+ {0xf5b5d7ec8acb58a2, 0xae10af696774b1db},
+ {0x9991a6f3d6bf1765, 0xacca6da1e0a8ef29},
+ {0xbff610b0cc6edd3f, 0x17fd090a58d32af3},
+ {0xeff394dcff8a948e, 0xddfc4b4cef07f5b0},
+ {0x95f83d0a1fb69cd9, 0x4abdaf101564f98e},
+ {0xbb764c4ca7a4440f, 0x9d6d1ad41abe37f1},
+ {0xea53df5fd18d5513, 0x84c86189216dc5ed},
+ {0x92746b9be2f8552c, 0x32fd3cf5b4e49bb4},
+ {0xb7118682dbb66a77, 0x3fbc8c33221dc2a1},
+ {0xe4d5e82392a40515, 0x0fabaf3feaa5334a},
+ {0x8f05b1163ba6832d, 0x29cb4d87f2a7400e},
+ {0xb2c71d5bca9023f8, 0x743e20e9ef511012},
+ {0xdf78e4b2bd342cf6, 0x914da9246b255416},
+ {0x8bab8eefb6409c1a, 0x1ad089b6c2f7548e},
+ {0xae9672aba3d0c320, 0xa184ac2473b529b1},
+ {0xda3c0f568cc4f3e8, 0xc9e5d72d90a2741e},
+ {0x8865899617fb1871, 0x7e2fa67c7a658892},
+ {0xaa7eebfb9df9de8d, 0xddbb901b98feeab7},
+ {0xd51ea6fa85785631, 0x552a74227f3ea565},
+ {0x8533285c936b35de, 0xd53a88958f87275f},
+ {0xa67ff273b8460356, 0x8a892abaf368f137},
+ {0xd01fef10a657842c, 0x2d2b7569b0432d85},
+ {0x8213f56a67f6b29b, 0x9c3b29620e29fc73},
+ {0xa298f2c501f45f42, 0x8349f3ba91b47b8f},
+ {0xcb3f2f7642717713, 0x241c70a936219a73},
+ {0xfe0efb53d30dd4d7, 0xed238cd383aa0110},
+ {0x9ec95d1463e8a506, 0xf4363804324a40aa},
+ {0xc67bb4597ce2ce48, 0xb143c6053edcd0d5},
+ {0xf81aa16fdc1b81da, 0xdd94b7868e94050a},
+ {0x9b10a4e5e9913128, 0xca7cf2b4191c8326},
+ {0xc1d4ce1f63f57d72, 0xfd1c2f611f63a3f0},
+ {0xf24a01a73cf2dccf, 0xbc633b39673c8cec},
+ {0x976e41088617ca01, 0xd5be0503e085d813},
+ {0xbd49d14aa79dbc82, 0x4b2d8644d8a74e18},
+ {0xec9c459d51852ba2, 0xddf8e7d60ed1219e},
+ {0x93e1ab8252f33b45, 0xcabb90e5c942b503},
+ {0xb8da1662e7b00a17, 0x3d6a751f3b936243},
+ {0xe7109bfba19c0c9d, 0x0cc512670a783ad4},
+ {0x906a617d450187e2, 0x27fb2b80668b24c5},
+ {0xb484f9dc9641e9da, 0xb1f9f660802dedf6},
+ {0xe1a63853bbd26451, 0x5e7873f8a0396973},
+ {0x8d07e33455637eb2, 0xdb0b487b6423e1e8},
+ {0xb049dc016abc5e5f, 0x91ce1a9a3d2cda62},
+ {0xdc5c5301c56b75f7, 0x7641a140cc7810fb},
+ {0x89b9b3e11b6329ba, 0xa9e904c87fcb0a9d},
+ {0xac2820d9623bf429, 0x546345fa9fbdcd44},
+ {0xd732290fbacaf133, 0xa97c177947ad4095},
+ {0x867f59a9d4bed6c0, 0x49ed8eabcccc485d},
+ {0xa81f301449ee8c70, 0x5c68f256bfff5a74},
+ {0xd226fc195c6a2f8c, 0x73832eec6fff3111},
+ {0x83585d8fd9c25db7, 0xc831fd53c5ff7eab},
+ {0xa42e74f3d032f525, 0xba3e7ca8b77f5e55},
+ {0xcd3a1230c43fb26f, 0x28ce1bd2e55f35eb},
+ {0x80444b5e7aa7cf85, 0x7980d163cf5b81b3},
+ {0xa0555e361951c366, 0xd7e105bcc332621f},
+ {0xc86ab5c39fa63440, 0x8dd9472bf3fefaa7},
+ {0xfa856334878fc150, 0xb14f98f6f0feb951},
+ {0x9c935e00d4b9d8d2, 0x6ed1bf9a569f33d3},
+ {0xc3b8358109e84f07, 0x0a862f80ec4700c8},
+ {0xf4a642e14c6262c8, 0xcd27bb612758c0fa},
+ {0x98e7e9cccfbd7dbd, 0x8038d51cb897789c},
+ {0xbf21e44003acdd2c, 0xe0470a63e6bd56c3},
+ {0xeeea5d5004981478, 0x1858ccfce06cac74},
+ {0x95527a5202df0ccb, 0x0f37801e0c43ebc8},
+ {0xbaa718e68396cffd, 0xd30560258f54e6ba},
+ {0xe950df20247c83fd, 0x47c6b82ef32a2069},
+ {0x91d28b7416cdd27e, 0x4cdc331d57fa5441},
+ {0xb6472e511c81471d, 0xe0133fe4adf8e952},
+ {0xe3d8f9e563a198e5, 0x58180fddd97723a6},
+ {0x8e679c2f5e44ff8f, 0x570f09eaa7ea7648},
+ {0xb201833b35d63f73, 0x2cd2cc6551e513da},
+ {0xde81e40a034bcf4f, 0xf8077f7ea65e58d1},
+ {0x8b112e86420f6191, 0xfb04afaf27faf782},
+ {0xadd57a27d29339f6, 0x79c5db9af1f9b563},
+ {0xd94ad8b1c7380874, 0x18375281ae7822bc},
+ {0x87cec76f1c830548, 0x8f2293910d0b15b5},
+ {0xa9c2794ae3a3c69a, 0xb2eb3875504ddb22},
+ {0xd433179d9c8cb841, 0x5fa60692a46151eb},
+ {0x849feec281d7f328, 0xdbc7c41ba6bcd333},
+ {0xa5c7ea73224deff3, 0x12b9b522906c0800},
+ {0xcf39e50feae16bef, 0xd768226b34870a00},
+ {0x81842f29f2cce375, 0xe6a1158300d46640},
+ {0xa1e53af46f801c53, 0x60495ae3c1097fd0},
+ {0xca5e89b18b602368, 0x385bb19cb14bdfc4},
+ {0xfcf62c1dee382c42, 0x46729e03dd9ed7b5},
+ {0x9e19db92b4e31ba9, 0x6c07a2c26a8346d1},
+ {0xc5a05277621be293, 0xc7098b7305241885},
+ { 0xf70867153aa2db38,
+ 0xb8cbee4fc66d1ea7 }
#else
+ {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b},
+ {0xce5d73ff402d98e3, 0xfb0a3d212dc81290},
+ {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f},
+ {0x86a8d39ef77164bc, 0xae5dff9c02033198},
+ {0xd98ddaee19068c76, 0x3badd624dd9b0958},
+ {0xafbd2350644eeacf, 0xe5d1929ef90898fb},
+ {0x8df5efabc5979c8f, 0xca8d3ffa1ef463c2},
+ {0xe55990879ddcaabd, 0xcc420a6a101d0516},
+ {0xb94470938fa89bce, 0xf808e40e8d5b3e6a},
+ {0x95a8637627989aad, 0xdde7001379a44aa9},
+ {0xf1c90080baf72cb1, 0x5324c68b12dd6339},
+ {0xc350000000000000, 0x0000000000000000},
+ {0x9dc5ada82b70b59d, 0xf020000000000000},
+ {0xfee50b7025c36a08, 0x02f236d04753d5b4},
+ {0xcde6fd5e09abcf26, 0xed4c0226b55e6f86},
+ {0xa6539930bf6bff45, 0x84db8346b786151c},
+ {0x865b86925b9bc5c2, 0x0b8a2392ba45a9b2},
+ {0xd910f7ff28069da4, 0x1b2ba1518094da04},
+ {0xaf58416654a6babb, 0x387ac8d1970027b2},
+ {0x8da471a9de737e24, 0x5ceaecfed289e5d2},
+ {0xe4d5e82392a40515, 0x0fabaf3feaa5334a},
+ {0xb8da1662e7b00a17, 0x3d6a751f3b936243},
+ { 0x95527a5202df0ccb,
+ 0x0f37801e0c43ebc8 }
+#endif
+ };
+
+#if FMT_USE_FULL_CACHE_DRAGONBOX
+ return pow10_significands[k - float_info<double>::min_k];
+#else
+ static constexpr const uint64_t powers_of_5_64[] = {
+ 0x0000000000000001, 0x0000000000000005, 0x0000000000000019,
+ 0x000000000000007d, 0x0000000000000271, 0x0000000000000c35,
+ 0x0000000000003d09, 0x000000000001312d, 0x000000000005f5e1,
+ 0x00000000001dcd65, 0x00000000009502f9, 0x0000000002e90edd,
+ 0x000000000e8d4a51, 0x0000000048c27395, 0x000000016bcc41e9,
+ 0x000000071afd498d, 0x0000002386f26fc1, 0x000000b1a2bc2ec5,
+ 0x000003782dace9d9, 0x00001158e460913d, 0x000056bc75e2d631,
+ 0x0001b1ae4d6e2ef5, 0x000878678326eac9, 0x002a5a058fc295ed,
+ 0x00d3c21bcecceda1, 0x0422ca8b0a00a425, 0x14adf4b7320334b9};
+
+ static constexpr const uint32_t pow10_recovery_errors[] = {
+ 0x50001400, 0x54044100, 0x54014555, 0x55954415, 0x54115555, 0x00000001,
+ 0x50000000, 0x00104000, 0x54010004, 0x05004001, 0x55555544, 0x41545555,
+ 0x54040551, 0x15445545, 0x51555514, 0x10000015, 0x00101100, 0x01100015,
+ 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x04450514, 0x45414110,
+ 0x55555145, 0x50544050, 0x15040155, 0x11054140, 0x50111514, 0x11451454,
+ 0x00400541, 0x00000000, 0x55555450, 0x10056551, 0x10054011, 0x55551014,
+ 0x69514555, 0x05151109, 0x00155555};
+
static const int compression_ratio = 27;
// Compute base index.
int offset = k - kb;
// Get base cache.
- uint128_wrapper base_cache =
- data::dragonbox_pow10_significands_128[cache_index];
+ uint128_wrapper base_cache = pow10_significands[cache_index];
if (offset == 0) return base_cache;
// Compute the required amount of bit-shift.
FMT_ASSERT(alpha > 0 && alpha < 64, "shifting error detected");
// Try to recover the real cache.
- uint64_t pow5 = data::powers_of_5_64[offset];
+ uint64_t pow5 = powers_of_5_64[offset];
uint128_wrapper recovered_cache = umul128(base_cache.high(), pow5);
uint128_wrapper middle_low =
umul128(base_cache.low() - (kb < 0 ? 1u : 0u), pow5);
// Get error.
int error_idx = (k - float_info<double>::min_k) / 16;
- uint32_t error = (data::dragonbox_pow10_recovery_errors[error_idx] >>
+ uint32_t error = (pow10_recovery_errors[error_idx] >>
((k - float_info<double>::min_k) % 16) * 2) &
0x3;
}
// Remove trailing zeros from n and return the number of zeros removed (float)
-FMT_ALWAYS_INLINE int remove_trailing_zeros(uint32_t& n) FMT_NOEXCEPT {
+FMT_INLINE int remove_trailing_zeros(uint32_t& n) FMT_NOEXCEPT {
#ifdef FMT_BUILTIN_CTZ
int t = FMT_BUILTIN_CTZ(n);
#else
}
// Removes trailing zeros and returns the number of zeros removed (double)
-FMT_ALWAYS_INLINE int remove_trailing_zeros(uint64_t& n) FMT_NOEXCEPT {
+FMT_INLINE int remove_trailing_zeros(uint64_t& n) FMT_NOEXCEPT {
#ifdef FMT_BUILTIN_CTZLL
int t = FMT_BUILTIN_CTZLL(n);
#else
// The main algorithm for shorter interval case
template <class T>
-FMT_ALWAYS_INLINE FMT_SAFEBUFFERS decimal_fp<T> shorter_interval_case(
- int exponent) FMT_NOEXCEPT {
+FMT_INLINE decimal_fp<T> shorter_interval_case(int exponent) FMT_NOEXCEPT {
decimal_fp<T> ret_value;
// Compute k and beta
const int minus_k = floor_log10_pow2_minus_log10_4_over_3(exponent);
return ret_value;
}
-template <typename T>
-FMT_SAFEBUFFERS decimal_fp<T> to_decimal(T x) FMT_NOEXCEPT {
+template <typename T> decimal_fp<T> to_decimal(T x) FMT_NOEXCEPT {
// Step 1: integer promotion & Schubfach multiplier calculation.
using carrier_uint = typename float_info<T>::carrier_uint;
// Formats value using a variation of the Fixed-Precision Positive
// Floating-Point Printout ((FPP)^2) algorithm by Steele & White:
-// https://fmt.dev/p372-steele.pdf.
+// https://fmt.dev/papers/p372-steele.pdf.
template <typename Double>
void fallback_format(Double d, int num_digits, bool binary32, buffer<char>& buf,
int& exp10) {
--exp_pos;
} while (*exp_pos != 'e');
char sign = exp_pos[1];
- assert(sign == '+' || sign == '-');
+ FMT_ASSERT(sign == '+' || sign == '-', "");
int exp = 0;
auto p = exp_pos + 2; // Skip 'e' and sign.
do {
- assert(is_digit(*p));
+ FMT_ASSERT(is_digit(*p), "");
exp = exp * 10 + (*p++ - '0');
} while (p != end);
if (sign == '-') exp = -exp;
return exp - fraction_size;
}
}
-
-// A public domain branchless UTF-8 decoder by Christopher Wellons:
-// https://github.com/skeeto/branchless-utf8
-/* Decode the next character, c, from buf, reporting errors in e.
- *
- * Since this is a branchless decoder, four bytes will be read from the
- * buffer regardless of the actual length of the next character. This
- * means the buffer _must_ have at least three bytes of zero padding
- * following the end of the data stream.
- *
- * Errors are reported in e, which will be non-zero if the parsed
- * character was somehow invalid: invalid byte sequence, non-canonical
- * encoding, or a surrogate half.
- *
- * The function returns a pointer to the next character. When an error
- * occurs, this pointer will be a guess that depends on the particular
- * error, but it will always advance at least one byte.
- */
-inline const char* utf8_decode(const char* buf, uint32_t* c, int* e) {
- static const int masks[] = {0x00, 0x7f, 0x1f, 0x0f, 0x07};
- static const uint32_t mins[] = {4194304, 0, 128, 2048, 65536};
- static const int shiftc[] = {0, 18, 12, 6, 0};
- static const int shifte[] = {0, 6, 4, 2, 0};
-
- int len = code_point_length(buf);
- const char* next = buf + len;
-
- // Assume a four-byte character and load four bytes. Unused bits are
- // shifted out.
- auto s = reinterpret_cast<const unsigned char*>(buf);
- *c = uint32_t(s[0] & masks[len]) << 18;
- *c |= uint32_t(s[1] & 0x3f) << 12;
- *c |= uint32_t(s[2] & 0x3f) << 6;
- *c |= uint32_t(s[3] & 0x3f) << 0;
- *c >>= shiftc[len];
-
- // Accumulate the various error conditions.
- *e = (*c < mins[len]) << 6; // non-canonical encoding
- *e |= ((*c >> 11) == 0x1b) << 7; // surrogate half?
- *e |= (*c > 0x10FFFF) << 8; // out of range?
- *e |= (s[1] & 0xc0) >> 2;
- *e |= (s[2] & 0xc0) >> 4;
- *e |= (s[3]) >> 6;
- *e ^= 0x2a; // top two bits of each tail byte correct?
- *e >>= shifte[len];
-
- return next;
-}
-
-struct stringifier {
- template <typename T> FMT_INLINE std::string operator()(T value) const {
- return to_string(value);
- }
- std::string operator()(basic_format_arg<format_context>::handle h) const {
- memory_buffer buf;
- format_parse_context parse_ctx({});
- format_context format_ctx(buffer_appender<char>(buf), {}, {});
- h.format(parse_ctx, format_ctx);
- return to_string(buf);
- }
-};
} // namespace detail
template <> struct formatter<detail::bigint> {
- format_parse_context::iterator parse(format_parse_context& ctx) {
+ FMT_CONSTEXPR format_parse_context::iterator parse(
+ format_parse_context& ctx) {
return ctx.begin();
}
for (auto i = n.bigits_.size(); i > 0; --i) {
auto value = n.bigits_[i - 1u];
if (first) {
- out = format_to(out, "{:x}", value);
+ out = format_to(out, FMT_STRING("{:x}"), value);
first = false;
continue;
}
- out = format_to(out, "{:08x}", value);
+ out = format_to(out, FMT_STRING("{:08x}"), value);
}
if (n.exp_ > 0)
- out = format_to(out, "p{}", n.exp_ * detail::bigint::bigit_bits);
+ out = format_to(out, FMT_STRING("p{}"),
+ n.exp_ * detail::bigint::bigit_bits);
return out;
}
};
FMT_FUNC detail::utf8_to_utf16::utf8_to_utf16(string_view s) {
- auto transcode = [this](const char* p) {
- auto cp = uint32_t();
- auto error = 0;
- p = utf8_decode(p, &cp, &error);
+ for_each_codepoint(s, [this](uint32_t cp, int error) {
if (error != 0) FMT_THROW(std::runtime_error("invalid utf8"));
if (cp <= 0xFFFF) {
buffer_.push_back(static_cast<wchar_t>(cp));
buffer_.push_back(static_cast<wchar_t>(0xD800 + (cp >> 10)));
buffer_.push_back(static_cast<wchar_t>(0xDC00 + (cp & 0x3FF)));
}
- return p;
- };
- auto p = s.data();
- const size_t block_size = 4; // utf8_decode always reads blocks of 4 chars.
- if (s.size() >= block_size) {
- for (auto end = p + s.size() - block_size + 1; p < end;) p = transcode(p);
- }
- if (auto num_chars_left = s.data() + s.size() - p) {
- char buf[2 * block_size - 1] = {};
- memcpy(buf, p, to_unsigned(num_chars_left));
- p = buf;
- do {
- p = transcode(p);
- } while (p - buf < num_chars_left);
- }
+ });
buffer_.push_back(0);
}
FMT_FUNC void format_system_error(detail::buffer<char>& out, int error_code,
- string_view message) FMT_NOEXCEPT {
+ const char* message) FMT_NOEXCEPT {
FMT_TRY {
- memory_buffer buf;
- buf.resize(inline_buffer_size);
- for (;;) {
- char* system_message = &buf[0];
- int result =
- detail::safe_strerror(error_code, system_message, buf.size());
- if (result == 0) {
- format_to(detail::buffer_appender<char>(out), "{}: {}", message,
- system_message);
- return;
- }
- if (result != ERANGE)
- break; // Can't get error message, report error code instead.
- buf.resize(buf.size() * 2);
- }
+ auto ec = std::error_code(error_code, std::generic_category());
+ write(std::back_inserter(out), std::system_error(ec, message).what());
+ return;
}
FMT_CATCH(...) {}
format_error_code(out, error_code, message);
}
FMT_FUNC void report_system_error(int error_code,
- fmt::string_view message) FMT_NOEXCEPT {
+ const char* message) FMT_NOEXCEPT {
report_error(format_system_error, error_code, message);
}
-FMT_FUNC std::string detail::vformat(string_view format_str, format_args args) {
- if (format_str.size() == 2 && equal2(format_str.data(), "{}")) {
- auto arg = args.get(0);
- if (!arg) error_handler().on_error("argument not found");
- return visit_format_arg(stringifier(), arg);
- }
- memory_buffer buffer;
- detail::vformat_to(buffer, format_str, args);
+FMT_FUNC std::string vformat(string_view fmt, format_args args) {
+ // 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();
+ detail::vformat_to(buffer, fmt, args);
return to_string(buffer);
}
} // namespace detail
#endif
-FMT_FUNC void vprint(std::FILE* f, string_view format_str, format_args args) {
- memory_buffer buffer;
- detail::vformat_to(buffer, format_str,
- basic_format_args<buffer_context<char>>(args));
+namespace detail {
+FMT_FUNC void print(std::FILE* f, string_view text) {
#ifdef _WIN32
auto fd = _fileno(f);
if (_isatty(fd)) {
- detail::utf8_to_utf16 u16(string_view(buffer.data(), buffer.size()));
+ detail::utf8_to_utf16 u16(string_view(text.data(), text.size()));
auto written = detail::dword();
- if (!detail::WriteConsoleW(reinterpret_cast<void*>(_get_osfhandle(fd)),
- u16.c_str(), static_cast<uint32_t>(u16.size()),
- &written, nullptr)) {
- FMT_THROW(format_error("failed to write to console"));
+ if (detail::WriteConsoleW(reinterpret_cast<void*>(_get_osfhandle(fd)),
+ u16.c_str(), static_cast<uint32_t>(u16.size()),
+ &written, nullptr)) {
+ return;
}
- return;
+ // Fallback to fwrite on failure. It can happen if the output has been
+ // redirected to NUL.
}
#endif
- detail::fwrite_fully(buffer.data(), 1, buffer.size(), f);
+ detail::fwrite_fully(text.data(), 1, text.size(), f);
+}
+} // namespace detail
+
+FMT_FUNC void vprint(std::FILE* f, string_view format_str, format_args args) {
+ memory_buffer buffer;
+ detail::vformat_to(buffer, format_str, args);
+ detail::print(f, {buffer.data(), buffer.size()});
}
#ifdef _WIN32
#ifndef FMT_FORMAT_H_
#define FMT_FORMAT_H_
-#include <algorithm>
-#include <cerrno>
-#include <cmath>
-#include <cstdint>
-#include <limits>
-#include <memory>
-#include <stdexcept>
+#include <cmath> // std::signbit
+#include <cstdint> // uint32_t
+#include <limits> // std::numeric_limits
+#include <memory> // std::uninitialized_copy
+#include <stdexcept> // std::runtime_error
+#include <system_error> // std::system_error
+#include <utility> // std::swap
#include "core.h"
# define FMT_NOINLINE
#endif
-#if __cplusplus == 201103L || __cplusplus == 201402L
-# if defined(__INTEL_COMPILER) || defined(__PGI)
-# define FMT_FALLTHROUGH
-# elif defined(__clang__)
-# define FMT_FALLTHROUGH [[clang::fallthrough]]
-# elif FMT_GCC_VERSION >= 700 && \
- (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= 520)
-# define FMT_FALLTHROUGH [[gnu::fallthrough]]
-# else
-# define FMT_FALLTHROUGH
-# endif
-#elif FMT_HAS_CPP17_ATTRIBUTE(fallthrough) || \
- (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
-# define FMT_FALLTHROUGH [[fallthrough]]
+#if FMT_MSC_VER
+# define FMT_MSC_DEFAULT = default
#else
-# define FMT_FALLTHROUGH
-#endif
-
-#ifndef FMT_MAYBE_UNUSED
-# if FMT_HAS_CPP17_ATTRIBUTE(maybe_unused)
-# define FMT_MAYBE_UNUSED [[maybe_unused]]
-# else
-# define FMT_MAYBE_UNUSED
-# endif
+# define FMT_MSC_DEFAULT
#endif
#ifndef FMT_THROW
# define FMT_THROW(x) throw x
# endif
# else
-# define FMT_THROW(x) \
- do { \
- static_cast<void>(sizeof(x)); \
- FMT_ASSERT(false, ""); \
+# define FMT_THROW(x) \
+ do { \
+ FMT_ASSERT(false, (x).what()); \
} while (false)
# endif
#endif
# define FMT_CATCH(x) if (false)
#endif
+#ifndef FMT_DEPRECATED
+# if FMT_HAS_CPP14_ATTRIBUTE(deprecated) || FMT_MSC_VER >= 1900
+# define FMT_DEPRECATED [[deprecated]]
+# else
+# if (defined(__GNUC__) && !defined(__LCC__)) || defined(__clang__)
+# define FMT_DEPRECATED __attribute__((deprecated))
+# elif FMT_MSC_VER
+# define FMT_DEPRECATED __declspec(deprecated)
+# else
+# define FMT_DEPRECATED /* deprecated */
+# endif
+# endif
+#endif
+
+// Workaround broken [[deprecated]] in the Intel, PGI and NVCC compilers.
+#if FMT_ICC_VERSION || defined(__PGI) || FMT_NVCC
+# define FMT_DEPRECATED_ALIAS
+#else
+# define FMT_DEPRECATED_ALIAS FMT_DEPRECATED
+#endif
+
#ifndef FMT_USE_USER_DEFINED_LITERALS
// EDG based compilers (Intel, NVIDIA, Elbrus, etc), GCC and MSVC support UDLs.
# if (FMT_HAS_FEATURE(cxx_user_literals) || FMT_GCC_VERSION >= 407 || \
# endif
#endif
-#ifndef FMT_USE_UDL_TEMPLATE
-// EDG frontend based compilers (icc, nvcc, PGI, etc) and GCC < 6.4 do not
-// properly support UDL templates and GCC >= 9 warns about them.
-# if FMT_USE_USER_DEFINED_LITERALS && \
- (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= 501) && \
- ((FMT_GCC_VERSION >= 604 && __cplusplus >= 201402L) || \
- FMT_CLANG_VERSION >= 304) && \
- !defined(__PGI) && !defined(__NVCC__)
-# define FMT_USE_UDL_TEMPLATE 1
-# else
-# define FMT_USE_UDL_TEMPLATE 0
-# endif
-#endif
-
-#ifndef FMT_USE_FLOAT
-# define FMT_USE_FLOAT 1
-#endif
-
-#ifndef FMT_USE_DOUBLE
-# define FMT_USE_DOUBLE 1
-#endif
-
-#ifndef FMT_USE_LONG_DOUBLE
-# define FMT_USE_LONG_DOUBLE 1
-#endif
-
// Defining FMT_REDUCE_INT_INSTANTIATIONS to 1, will reduce the number of
-// int_writer template instances to just one by only using the largest integer
-// type. This results in a reduction in binary size but will cause a decrease in
-// integer formatting performance.
+// integer formatter template instantiations to just one by only using the
+// largest integer type. This results in a reduction in binary size but will
+// cause a decrease in integer formatting performance.
#if !defined(FMT_REDUCE_INT_INSTANTIATIONS)
# define FMT_REDUCE_INT_INSTANTIATIONS 0
#endif
// Some compilers masquerade as both MSVC and GCC-likes or otherwise support
// __builtin_clz and __builtin_clzll, so only define FMT_BUILTIN_CLZ using the
// MSVC intrinsics if the clz and clzll builtins are not available.
-#if FMT_MSC_VER && !defined(FMT_BUILTIN_CLZLL) && \
- !defined(FMT_BUILTIN_CTZLL) && !defined(_MANAGED)
+#if FMT_MSC_VER && !defined(FMT_BUILTIN_CLZLL) && !defined(FMT_BUILTIN_CTZLL)
FMT_BEGIN_NAMESPACE
namespace detail {
// Avoid Clang with Microsoft CodeGen's -Wunknown-pragmas warning.
-# ifndef __clang__
+# if !defined(__clang__)
+# pragma managed(push, off)
# pragma intrinsic(_BitScanForward)
# pragma intrinsic(_BitScanReverse)
-# endif
-# if defined(_WIN64) && !defined(__clang__)
-# pragma intrinsic(_BitScanForward64)
-# pragma intrinsic(_BitScanReverse64)
+# if defined(_WIN64)
+# pragma intrinsic(_BitScanForward64)
+# pragma intrinsic(_BitScanReverse64)
+# endif
# endif
-inline int clz(uint32_t x) {
+inline auto clz(uint32_t x) -> int {
unsigned long r = 0;
_BitScanReverse(&r, x);
FMT_ASSERT(x != 0, "");
// Static analysis complains about using uninitialized data
// "r", but the only way that can happen is if "x" is 0,
// which the callers guarantee to not happen.
- FMT_SUPPRESS_MSC_WARNING(6102)
+ FMT_MSC_WARNING(suppress : 6102)
return 31 ^ static_cast<int>(r);
}
# define FMT_BUILTIN_CLZ(n) detail::clz(n)
-inline int clzll(uint64_t x) {
+inline auto clzll(uint64_t x) -> int {
unsigned long r = 0;
# ifdef _WIN64
_BitScanReverse64(&r, x);
_BitScanReverse(&r, static_cast<uint32_t>(x));
# endif
FMT_ASSERT(x != 0, "");
- FMT_SUPPRESS_MSC_WARNING(6102) // Suppress a bogus static analysis warning.
+ FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning.
return 63 ^ static_cast<int>(r);
}
# define FMT_BUILTIN_CLZLL(n) detail::clzll(n)
-inline int ctz(uint32_t x) {
+inline auto ctz(uint32_t x) -> int {
unsigned long r = 0;
_BitScanForward(&r, x);
FMT_ASSERT(x != 0, "");
- FMT_SUPPRESS_MSC_WARNING(6102) // Suppress a bogus static analysis warning.
+ FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning.
return static_cast<int>(r);
}
# define FMT_BUILTIN_CTZ(n) detail::ctz(n)
-inline int ctzll(uint64_t x) {
+inline auto ctzll(uint64_t x) -> int {
unsigned long r = 0;
FMT_ASSERT(x != 0, "");
- FMT_SUPPRESS_MSC_WARNING(6102) // Suppress a bogus static analysis warning.
+ FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning.
# ifdef _WIN64
_BitScanForward64(&r, x);
# else
return static_cast<int>(r);
}
# define FMT_BUILTIN_CTZLL(n) detail::ctzll(n)
+# if !defined(__clang__)
+# pragma managed(pop)
+# endif
} // namespace detail
FMT_END_NAMESPACE
#endif
-// Enable the deprecated numeric alignment.
-#ifndef FMT_DEPRECATED_NUMERIC_ALIGN
-# define FMT_DEPRECATED_NUMERIC_ALIGN 0
-#endif
-
FMT_BEGIN_NAMESPACE
namespace detail {
+#if __cplusplus >= 202002L || \
+ (__cplusplus >= 201709L && FMT_GCC_VERSION >= 1002)
+# define FMT_CONSTEXPR20 constexpr
+#else
+# define FMT_CONSTEXPR20
+#endif
+
// An equivalent of `*reinterpret_cast<Dest*>(&source)` that doesn't have
// undefined behavior (e.g. due to type aliasing).
// Example: uint64_t d = bit_cast<uint64_t>(2.718);
template <typename Dest, typename Source>
-inline Dest bit_cast(const Source& source) {
+inline auto bit_cast(const Source& source) -> Dest {
static_assert(sizeof(Dest) == sizeof(Source), "size mismatch");
Dest dest;
std::memcpy(&dest, &source, sizeof(dest));
return dest;
}
-inline bool is_big_endian() {
+inline auto is_big_endian() -> bool {
const auto u = 1u;
struct bytes {
char data[sizeof(u)];
};
#ifdef UINTPTR_MAX
using uintptr_t = ::uintptr_t;
-inline uintptr_t to_uintptr(const void* p) { return bit_cast<uintptr_t>(p); }
+inline auto to_uintptr(const void* p) -> uintptr_t {
+ return bit_cast<uintptr_t>(p);
+}
#else
using uintptr_t = fallback_uintptr;
-inline fallback_uintptr to_uintptr(const void* p) {
+inline auto to_uintptr(const void* p) -> fallback_uintptr {
return fallback_uintptr(p);
}
#endif
// Returns the largest possible value for type T. Same as
// std::numeric_limits<T>::max() but shorter and not affected by the max macro.
-template <typename T> constexpr T max_value() {
+template <typename T> constexpr auto max_value() -> T {
return (std::numeric_limits<T>::max)();
}
-template <typename T> constexpr int num_bits() {
+template <typename T> constexpr auto num_bits() -> int {
return std::numeric_limits<T>::digits;
}
// std::numeric_limits<T>::digits may return 0 for 128-bit ints.
-template <> constexpr int num_bits<int128_t>() { return 128; }
-template <> constexpr int num_bits<uint128_t>() { return 128; }
-template <> constexpr int num_bits<fallback_uintptr>() {
+template <> constexpr auto num_bits<int128_t>() -> int { return 128; }
+template <> constexpr auto num_bits<uint128_t>() -> int { return 128; }
+template <> constexpr auto num_bits<fallback_uintptr>() -> int {
return static_cast<int>(sizeof(void*) *
std::numeric_limits<unsigned char>::digits);
}
template <typename T> using sentinel_t = decltype(std::end(std::declval<T&>()));
// A workaround for std::string not having mutable data() until C++17.
-template <typename Char> inline Char* get_data(std::basic_string<Char>& s) {
+template <typename Char>
+inline auto get_data(std::basic_string<Char>& s) -> Char* {
return &s[0];
}
template <typename Container>
-inline typename Container::value_type* get_data(Container& c) {
+inline auto get_data(Container& c) -> typename Container::value_type* {
return c.data();
}
#if defined(_SECURE_SCL) && _SECURE_SCL
// Make a checked iterator to avoid MSVC warnings.
template <typename T> using checked_ptr = stdext::checked_array_iterator<T*>;
-template <typename T> checked_ptr<T> make_checked(T* p, size_t size) {
+template <typename T> auto make_checked(T* p, size_t size) -> checked_ptr<T> {
return {p, size};
}
#else
template <typename T> using checked_ptr = T*;
-template <typename T> inline T* make_checked(T* p, size_t) { return p; }
+template <typename T> inline auto make_checked(T* p, size_t) -> T* { return p; }
#endif
+// Attempts to reserve space for n extra characters in the output range.
+// Returns a pointer to the reserved range or a reference to it.
template <typename Container, FMT_ENABLE_IF(is_contiguous<Container>::value)>
-#if FMT_CLANG_VERSION
+#if FMT_CLANG_VERSION >= 307 && !FMT_ICC_VERSION
__attribute__((no_sanitize("undefined")))
#endif
-inline checked_ptr<typename Container::value_type>
-reserve(std::back_insert_iterator<Container> it, size_t n) {
+inline auto
+reserve(std::back_insert_iterator<Container> it, size_t n)
+ -> checked_ptr<typename Container::value_type> {
Container& c = get_container(it);
size_t size = c.size();
c.resize(size + n);
}
template <typename T>
-inline buffer_appender<T> reserve(buffer_appender<T> it, size_t n) {
+inline auto reserve(buffer_appender<T> it, size_t n) -> buffer_appender<T> {
buffer<T>& buf = get_container(it);
buf.try_reserve(buf.size() + n);
return it;
}
-template <typename Iterator> inline Iterator& reserve(Iterator& it, size_t) {
+template <typename Iterator>
+constexpr auto reserve(Iterator& it, size_t) -> Iterator& {
return it;
}
+template <typename OutputIt>
+using reserve_iterator =
+ remove_reference_t<decltype(reserve(std::declval<OutputIt&>(), 0))>;
+
template <typename T, typename OutputIt>
-constexpr T* to_pointer(OutputIt, size_t) {
+constexpr auto to_pointer(OutputIt, size_t) -> T* {
return nullptr;
}
-template <typename T> T* to_pointer(buffer_appender<T> it, size_t n) {
+template <typename T> auto to_pointer(buffer_appender<T> it, size_t n) -> T* {
buffer<T>& buf = get_container(it);
auto size = buf.size();
if (buf.capacity() < size + n) return nullptr;
}
template <typename Container, FMT_ENABLE_IF(is_contiguous<Container>::value)>
-inline std::back_insert_iterator<Container> base_iterator(
- std::back_insert_iterator<Container>& it,
- checked_ptr<typename Container::value_type>) {
+inline auto base_iterator(std::back_insert_iterator<Container>& it,
+ checked_ptr<typename Container::value_type>)
+ -> std::back_insert_iterator<Container> {
return it;
}
template <typename Iterator>
-inline Iterator base_iterator(Iterator, Iterator it) {
+constexpr auto base_iterator(Iterator, Iterator it) -> Iterator {
return it;
}
-// An output iterator that counts the number of objects written to it and
-// discards them.
-class counting_iterator {
- private:
- size_t count_;
-
- public:
- using iterator_category = std::output_iterator_tag;
- using difference_type = std::ptrdiff_t;
- using pointer = void;
- using reference = void;
- using _Unchecked_type = counting_iterator; // Mark iterator as checked.
-
- struct value_type {
- template <typename T> void operator=(const T&) {}
- };
-
- counting_iterator() : count_(0) {}
-
- size_t count() const { return count_; }
-
- counting_iterator& operator++() {
- ++count_;
- return *this;
- }
- counting_iterator operator++(int) {
- auto it = *this;
- ++*this;
- return it;
- }
-
- friend counting_iterator operator+(counting_iterator it, difference_type n) {
- it.count_ += static_cast<size_t>(n);
- return it;
- }
-
- value_type operator*() const { return {}; }
-};
-
-template <typename OutputIt> class truncating_iterator_base {
- protected:
- OutputIt out_;
- size_t limit_;
- size_t count_;
-
- truncating_iterator_base(OutputIt out, size_t limit)
- : out_(out), limit_(limit), count_(0) {}
-
- public:
- using iterator_category = std::output_iterator_tag;
- using value_type = typename std::iterator_traits<OutputIt>::value_type;
- using difference_type = void;
- using pointer = void;
- using reference = void;
- using _Unchecked_type =
- truncating_iterator_base; // Mark iterator as checked.
-
- OutputIt base() const { return out_; }
- size_t count() const { return count_; }
-};
-
-// An output iterator that truncates the output and counts the number of objects
-// written to it.
-template <typename OutputIt,
- typename Enable = typename std::is_void<
- typename std::iterator_traits<OutputIt>::value_type>::type>
-class truncating_iterator;
-
-template <typename OutputIt>
-class truncating_iterator<OutputIt, std::false_type>
- : public truncating_iterator_base<OutputIt> {
- mutable typename truncating_iterator_base<OutputIt>::value_type blackhole_;
-
- public:
- using value_type = typename truncating_iterator_base<OutputIt>::value_type;
-
- truncating_iterator(OutputIt out, size_t limit)
- : truncating_iterator_base<OutputIt>(out, limit) {}
-
- truncating_iterator& operator++() {
- if (this->count_++ < this->limit_) ++this->out_;
- return *this;
+// <algorithm> is spectacularly slow to compile in C++20 so use a simple fill_n
+// instead (#1998).
+template <typename OutputIt, typename Size, typename T>
+FMT_CONSTEXPR auto fill_n(OutputIt out, Size count, const T& value)
+ -> OutputIt {
+ for (Size i = 0; i < count; ++i) *out++ = value;
+ return out;
+}
+template <typename T, typename Size>
+FMT_CONSTEXPR20 auto fill_n(T* out, Size count, char value) -> T* {
+ if (is_constant_evaluated()) {
+ return fill_n<T*, Size, T>(out, count, value);
}
+ std::memset(out, value, to_unsigned(count));
+ return out + count;
+}
- truncating_iterator operator++(int) {
- auto it = *this;
- ++*this;
- return it;
- }
+#ifdef __cpp_char8_t
+using char8_type = char8_t;
+#else
+enum char8_type : unsigned char {};
+#endif
- value_type& operator*() const {
- return this->count_ < this->limit_ ? *this->out_ : blackhole_;
+template <typename OutChar, typename InputIt, typename OutputIt>
+FMT_CONSTEXPR FMT_NOINLINE auto copy_str_noinline(InputIt begin, InputIt end,
+ OutputIt out) -> OutputIt {
+ return copy_str<OutChar>(begin, end, out);
+}
+
+// A public domain branchless UTF-8 decoder by Christopher Wellons:
+// https://github.com/skeeto/branchless-utf8
+/* Decode the next character, c, from s, reporting errors in e.
+ *
+ * Since this is a branchless decoder, four bytes will be read from the
+ * buffer regardless of the actual length of the next character. This
+ * means the buffer _must_ have at least three bytes of zero padding
+ * following the end of the data stream.
+ *
+ * Errors are reported in e, which will be non-zero if the parsed
+ * character was somehow invalid: invalid byte sequence, non-canonical
+ * encoding, or a surrogate half.
+ *
+ * The function returns a pointer to the next character. When an error
+ * occurs, this pointer will be a guess that depends on the particular
+ * error, but it will always advance at least one byte.
+ */
+FMT_CONSTEXPR inline auto utf8_decode(const char* s, uint32_t* c, int* e)
+ -> const char* {
+ constexpr const int masks[] = {0x00, 0x7f, 0x1f, 0x0f, 0x07};
+ constexpr const uint32_t mins[] = {4194304, 0, 128, 2048, 65536};
+ constexpr const int shiftc[] = {0, 18, 12, 6, 0};
+ constexpr const int shifte[] = {0, 6, 4, 2, 0};
+
+ int len = code_point_length(s);
+ const char* next = s + len;
+
+ // Assume a four-byte character and load four bytes. Unused bits are
+ // shifted out.
+ *c = uint32_t(s[0] & masks[len]) << 18;
+ *c |= uint32_t(s[1] & 0x3f) << 12;
+ *c |= uint32_t(s[2] & 0x3f) << 6;
+ *c |= uint32_t(s[3] & 0x3f) << 0;
+ *c >>= shiftc[len];
+
+ // Accumulate the various error conditions.
+ using uchar = unsigned char;
+ *e = (*c < mins[len]) << 6; // non-canonical encoding
+ *e |= ((*c >> 11) == 0x1b) << 7; // surrogate half?
+ *e |= (*c > 0x10FFFF) << 8; // out of range?
+ *e |= (uchar(s[1]) & 0xc0) >> 2;
+ *e |= (uchar(s[2]) & 0xc0) >> 4;
+ *e |= uchar(s[3]) >> 6;
+ *e ^= 0x2a; // top two bits of each tail byte correct?
+ *e >>= shifte[len];
+
+ return next;
+}
+
+template <typename F>
+FMT_CONSTEXPR void for_each_codepoint(string_view s, F f) {
+ auto decode = [f](const char* p) {
+ auto cp = uint32_t();
+ auto error = 0;
+ p = utf8_decode(p, &cp, &error);
+ f(cp, error);
+ return p;
+ };
+ auto p = s.data();
+ const size_t block_size = 4; // utf8_decode always reads blocks of 4 chars.
+ if (s.size() >= block_size) {
+ for (auto end = p + s.size() - block_size + 1; p < end;) p = decode(p);
}
-};
-
-template <typename OutputIt>
-class truncating_iterator<OutputIt, std::true_type>
- : public truncating_iterator_base<OutputIt> {
- public:
- truncating_iterator(OutputIt out, size_t limit)
- : truncating_iterator_base<OutputIt>(out, limit) {}
-
- template <typename T> truncating_iterator& operator=(T val) {
- if (this->count_++ < this->limit_) *this->out_++ = val;
- return *this;
+ if (auto num_chars_left = s.data() + s.size() - p) {
+ char buf[2 * block_size - 1] = {};
+ copy_str<char>(p, p + num_chars_left, buf);
+ p = buf;
+ do {
+ p = decode(p);
+ } while (p - buf < num_chars_left);
}
-
- truncating_iterator& operator++() { return *this; }
- truncating_iterator& operator++(int) { return *this; }
- truncating_iterator& operator*() { return *this; }
-};
+}
template <typename Char>
-inline size_t count_code_points(basic_string_view<Char> s) {
+inline auto compute_width(basic_string_view<Char> s) -> size_t {
return s.size();
}
-// Counts the number of code points in a UTF-8 string.
-inline size_t count_code_points(basic_string_view<char> s) {
- const char* data = s.data();
+// Computes approximate display width of a UTF-8 string.
+FMT_CONSTEXPR inline size_t compute_width(string_view s) {
size_t num_code_points = 0;
- for (size_t i = 0, size = s.size(); i != size; ++i) {
- if ((data[i] & 0xc0) != 0x80) ++num_code_points;
- }
+ // It is not a lambda for compatibility with C++14.
+ struct count_code_points {
+ size_t* count;
+ FMT_CONSTEXPR void operator()(uint32_t cp, int error) const {
+ *count += detail::to_unsigned(
+ 1 +
+ (error == 0 && cp >= 0x1100 &&
+ (cp <= 0x115f || // Hangul Jamo init. consonants
+ cp == 0x2329 || // LEFT-POINTING ANGLE BRACKET
+ cp == 0x232a || // RIGHT-POINTING ANGLE BRACKET
+ // CJK ... Yi except IDEOGRAPHIC HALF FILL SPACE:
+ (cp >= 0x2e80 && cp <= 0xa4cf && cp != 0x303f) ||
+ (cp >= 0xac00 && cp <= 0xd7a3) || // Hangul Syllables
+ (cp >= 0xf900 && cp <= 0xfaff) || // CJK Compatibility Ideographs
+ (cp >= 0xfe10 && cp <= 0xfe19) || // Vertical Forms
+ (cp >= 0xfe30 && cp <= 0xfe6f) || // CJK Compatibility Forms
+ (cp >= 0xff00 && cp <= 0xff60) || // Fullwidth Forms
+ (cp >= 0xffe0 && cp <= 0xffe6) || // Fullwidth Forms
+ (cp >= 0x20000 && cp <= 0x2fffd) || // CJK
+ (cp >= 0x30000 && cp <= 0x3fffd) ||
+ // Miscellaneous Symbols and Pictographs + Emoticons:
+ (cp >= 0x1f300 && cp <= 0x1f64f) ||
+ // Supplemental Symbols and Pictographs:
+ (cp >= 0x1f900 && cp <= 0x1f9ff))));
+ }
+ };
+ for_each_codepoint(s, count_code_points{&num_code_points});
return num_code_points;
}
-inline size_t count_code_points(basic_string_view<char8_type> s) {
- return count_code_points(basic_string_view<char>(
+inline auto compute_width(basic_string_view<char8_type> s) -> size_t {
+ return compute_width(basic_string_view<char>(
reinterpret_cast<const char*>(s.data()), s.size()));
}
template <typename Char>
-inline size_t code_point_index(basic_string_view<Char> s, size_t n) {
+inline auto code_point_index(basic_string_view<Char> s, size_t n) -> size_t {
size_t size = s.size();
return n < size ? n : size;
}
// Calculates the index of the nth code point in a UTF-8 string.
-inline size_t code_point_index(basic_string_view<char8_type> s, size_t n) {
+inline auto code_point_index(basic_string_view<char8_type> s, size_t n)
+ -> size_t {
const char8_type* data = s.data();
size_t num_code_points = 0;
for (size_t i = 0, size = s.size(); i != size; ++i) {
- if ((data[i] & 0xc0) != 0x80 && ++num_code_points > n) {
- return i;
- }
+ if ((data[i] & 0xc0) != 0x80 && ++num_code_points > n) return i;
}
return s.size();
}
-template <typename InputIt, typename OutChar>
-using needs_conversion = bool_constant<
- std::is_same<typename std::iterator_traits<InputIt>::value_type,
- char>::value &&
- std::is_same<OutChar, char8_type>::value>;
-
-template <typename OutChar, typename InputIt, typename OutputIt,
- FMT_ENABLE_IF(!needs_conversion<InputIt, OutChar>::value)>
-OutputIt copy_str(InputIt begin, InputIt end, OutputIt it) {
- return std::copy(begin, end, it);
-}
-
-template <typename OutChar, typename InputIt, typename OutputIt,
- FMT_ENABLE_IF(needs_conversion<InputIt, OutChar>::value)>
-OutputIt copy_str(InputIt begin, InputIt end, OutputIt it) {
- return std::transform(begin, end, it,
- [](char c) { return static_cast<char8_type>(c); });
-}
-
-template <typename Char, typename InputIt>
-inline counting_iterator copy_str(InputIt begin, InputIt end,
- counting_iterator it) {
- return it + (end - begin);
-}
-
template <typename T>
using is_fast_float = bool_constant<std::numeric_limits<T>::is_iec559 &&
sizeof(T) <= sizeof(double)>;
template <typename T>
template <typename U>
void buffer<T>::append(const U* begin, const U* end) {
- do {
+ while (begin != end) {
auto count = to_unsigned(end - begin);
try_reserve(size_ + count);
auto free_cap = capacity_ - size_;
std::uninitialized_copy_n(begin, count, make_checked(ptr_ + size_, count));
size_ += count;
begin += count;
- } while (begin != end);
+ }
}
-template <typename OutputIt, typename T, typename Traits>
-void iterator_buffer<OutputIt, T, Traits>::flush() {
- out_ = std::copy_n(data_, this->limit(this->size()), out_);
- this->clear();
-}
+template <typename T, typename Enable = void>
+struct is_locale : std::false_type {};
+template <typename T>
+struct is_locale<T, void_t<decltype(T::classic())>> : std::true_type {};
} // namespace detail
+FMT_MODULE_EXPORT_BEGIN
+
// The number of characters to store in the basic_memory_buffer object itself
// to avoid dynamic memory allocation.
enum { inline_buffer_size = 500 };
A dynamically growing memory buffer for trivially copyable/constructible types
with the first ``SIZE`` elements stored in the object itself.
- You can use one of the following type aliases for common character types:
-
- +----------------+------------------------------+
- | Type | Definition |
- +================+==============================+
- | memory_buffer | basic_memory_buffer<char> |
- +----------------+------------------------------+
- | wmemory_buffer | basic_memory_buffer<wchar_t> |
- +----------------+------------------------------+
+ You can use the ``memory_buffer`` type alias for ``char`` instead.
**Example**::
Moves the content of the other ``basic_memory_buffer`` object to this one.
\endrst
*/
- basic_memory_buffer& operator=(basic_memory_buffer&& other) FMT_NOEXCEPT {
+ auto operator=(basic_memory_buffer&& other) FMT_NOEXCEPT
+ -> basic_memory_buffer& {
FMT_ASSERT(this != &other, "");
deallocate();
move(other);
}
// Returns a copy of the allocator associated with this buffer.
- Allocator get_allocator() const { return alloc_; }
+ auto get_allocator() const -> Allocator { return alloc_; }
/**
Resizes the buffer to contain *count* elements. If T is a POD type new
#ifdef FMT_FUZZ
if (size > 5000) throw std::runtime_error("fuzz mode - won't grow that much");
#endif
+ const size_t max_size = std::allocator_traits<Allocator>::max_size(alloc_);
size_t old_capacity = this->capacity();
size_t new_capacity = old_capacity + old_capacity / 2;
- if (size > new_capacity) new_capacity = size;
+ if (size > new_capacity)
+ new_capacity = size;
+ else if (new_capacity > max_size)
+ new_capacity = size > max_size ? size : max_size;
T* old_data = this->data();
T* new_data =
std::allocator_traits<Allocator>::allocate(alloc_, new_capacity);
}
using memory_buffer = basic_memory_buffer<char>;
-using wmemory_buffer = basic_memory_buffer<wchar_t>;
template <typename T, size_t SIZE, typename Allocator>
struct is_contiguous<basic_memory_buffer<T, SIZE, Allocator>> : std::true_type {
};
+namespace detail {
+FMT_API void print(std::FILE*, string_view);
+}
+
/** A formatting error such as invalid format string. */
FMT_CLASS_API
class FMT_API format_error : public std::runtime_error {
format_error& operator=(const format_error&) = default;
format_error(format_error&&) = default;
format_error& operator=(format_error&&) = default;
- ~format_error() FMT_NOEXCEPT FMT_OVERRIDE;
+ ~format_error() FMT_NOEXCEPT FMT_OVERRIDE FMT_MSC_DEFAULT;
};
-namespace detail {
+/**
+ \rst
+ Constructs a `~fmt::format_arg_store` object that contains references
+ to arguments and can be implicitly converted to `~fmt::format_args`.
+ If ``fmt`` is a compile-time string then `make_args_checked` checks
+ its validity at compile time.
+ \endrst
+ */
+template <typename... Args, typename S, typename Char = char_t<S>>
+FMT_INLINE auto make_args_checked(const S& fmt,
+ const remove_reference_t<Args>&... args)
+ -> format_arg_store<buffer_context<Char>, remove_reference_t<Args>...> {
+ static_assert(
+ detail::count<(
+ std::is_base_of<detail::view, remove_reference_t<Args>>::value &&
+ std::is_reference<Args>::value)...>() == 0,
+ "passing views as lvalues is disallowed");
+ detail::check_format_string<Args...>(fmt);
+ return {args...};
+}
+
+// compile-time support
+namespace detail_exported {
+#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS
+template <typename Char, size_t N> struct fixed_string {
+ constexpr fixed_string(const Char (&str)[N]) {
+ detail::copy_str<Char, const Char*, Char*>(static_cast<const Char*>(str),
+ str + N, data);
+ }
+ Char data[N]{};
+};
+#endif
+
+// Converts a compile-time string to basic_string_view.
+template <typename Char, size_t N>
+constexpr auto compile_string_to_view(const Char (&s)[N])
+ -> basic_string_view<Char> {
+ // Remove trailing NUL character if needed. Won't be present if this is used
+ // with a raw character array (i.e. not defined as a string).
+ return {s, N - (std::char_traits<Char>::to_int_type(s[N - 1]) == 0 ? 1 : 0)};
+}
+template <typename Char>
+constexpr auto compile_string_to_view(detail::std_string_view<Char> s)
+ -> basic_string_view<Char> {
+ return {s.data(), s.size()};
+}
+} // namespace detail_exported
+
+FMT_BEGIN_DETAIL_NAMESPACE
+
+inline void throw_format_error(const char* message) {
+ FMT_THROW(format_error(message));
+}
+
+template <typename T> struct is_integral : std::is_integral<T> {};
+template <> struct is_integral<int128_t> : std::true_type {};
+template <> struct is_integral<uint128_t> : std::true_type {};
template <typename T>
using is_signed =
// Returns true if value is negative, false otherwise.
// Same as `value < 0` but doesn't produce warnings if T is an unsigned type.
template <typename T, FMT_ENABLE_IF(is_signed<T>::value)>
-FMT_CONSTEXPR bool is_negative(T value) {
+FMT_CONSTEXPR auto is_negative(T value) -> bool {
return value < 0;
}
template <typename T, FMT_ENABLE_IF(!is_signed<T>::value)>
-FMT_CONSTEXPR bool is_negative(T) {
+FMT_CONSTEXPR auto is_negative(T) -> bool {
return false;
}
template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
-FMT_CONSTEXPR bool is_supported_floating_point(T) {
+FMT_CONSTEXPR auto is_supported_floating_point(T) -> uint16_t {
return (std::is_same<T, float>::value && FMT_USE_FLOAT) ||
(std::is_same<T, double>::value && FMT_USE_DOUBLE) ||
(std::is_same<T, long double>::value && FMT_USE_LONG_DOUBLE);
conditional_t<num_bits<T>() <= 32 && !FMT_REDUCE_INT_INSTANTIATIONS,
uint32_t,
conditional_t<num_bits<T>() <= 64, uint64_t, uint128_t>>;
+template <typename T>
+using uint64_or_128_t = conditional_t<num_bits<T>() <= 64, uint64_t, uint128_t>;
-// 128-bit integer type used internally
-struct FMT_EXTERN_TEMPLATE_API uint128_wrapper {
- uint128_wrapper() = default;
-
-#if FMT_USE_INT128
- uint128_t internal_;
-
- uint128_wrapper(uint64_t high, uint64_t low) FMT_NOEXCEPT
- : internal_{static_cast<uint128_t>(low) |
- (static_cast<uint128_t>(high) << 64)} {}
-
- uint128_wrapper(uint128_t u) : internal_{u} {}
-
- uint64_t high() const FMT_NOEXCEPT { return uint64_t(internal_ >> 64); }
- uint64_t low() const FMT_NOEXCEPT { return uint64_t(internal_); }
-
- uint128_wrapper& operator+=(uint64_t n) FMT_NOEXCEPT {
- internal_ += n;
- return *this;
- }
-#else
- uint64_t high_;
- uint64_t low_;
-
- uint128_wrapper(uint64_t high, uint64_t low) FMT_NOEXCEPT : high_{high},
- low_{low} {}
-
- uint64_t high() const FMT_NOEXCEPT { return high_; }
- uint64_t low() const FMT_NOEXCEPT { return low_; }
-
- uint128_wrapper& operator+=(uint64_t n) FMT_NOEXCEPT {
-# if defined(_MSC_VER) && defined(_M_X64)
- unsigned char carry = _addcarry_u64(0, low_, n, &low_);
- _addcarry_u64(carry, high_, 0, &high_);
- return *this;
-# else
- uint64_t sum = low_ + n;
- high_ += (sum < low_ ? 1 : 0);
- low_ = sum;
- return *this;
-# endif
- }
-#endif
-};
-
-// Table entry type for divisibility test used internally
-template <typename T> struct FMT_EXTERN_TEMPLATE_API divtest_table_entry {
- T mod_inv;
- T max_quotient;
-};
+#define FMT_POWERS_OF_10(factor) \
+ factor * 10, (factor)*100, (factor)*1000, (factor)*10000, (factor)*100000, \
+ (factor)*1000000, (factor)*10000000, (factor)*100000000, \
+ (factor)*1000000000
// Static data is placed in this class template for the header-only config.
-template <typename T = void> struct FMT_EXTERN_TEMPLATE_API basic_data {
- static const uint64_t powers_of_10_64[];
- static const uint32_t zero_or_powers_of_10_32_new[];
- static const uint64_t zero_or_powers_of_10_64_new[];
- static const uint64_t grisu_pow10_significands[];
- static const int16_t grisu_pow10_exponents[];
- static const divtest_table_entry<uint32_t> divtest_table_for_pow5_32[];
- static const divtest_table_entry<uint64_t> divtest_table_for_pow5_64[];
- static const uint64_t dragonbox_pow10_significands_64[];
- static const uint128_wrapper dragonbox_pow10_significands_128[];
+template <typename T = void> struct basic_data {
// log10(2) = 0x0.4d104d427de7fbcc...
static const uint64_t log10_2_significand = 0x4d104d427de7fbcc;
-#if !FMT_USE_FULL_CACHE_DRAGONBOX
- static const uint64_t powers_of_5_64[];
- static const uint32_t dragonbox_pow10_recovery_errors[];
-#endif
+
// GCC generates slightly better code for pairs than chars.
- using digit_pair = char[2];
- static const digit_pair digits[];
- static const char hex_digits[];
- static const char foreground_color[];
- static const char background_color[];
- static const char reset_color[5];
- static const wchar_t wreset_color[5];
- static const char signs[];
- static const char left_padding_shifts[5];
- static const char right_padding_shifts[5];
-
- // DEPRECATED! These are for ABI compatibility.
- static const uint32_t zero_or_powers_of_10_32[];
- static const uint64_t zero_or_powers_of_10_64[];
+ FMT_API static constexpr const char digits[100][2] = {
+ {'0', '0'}, {'0', '1'}, {'0', '2'}, {'0', '3'}, {'0', '4'}, {'0', '5'},
+ {'0', '6'}, {'0', '7'}, {'0', '8'}, {'0', '9'}, {'1', '0'}, {'1', '1'},
+ {'1', '2'}, {'1', '3'}, {'1', '4'}, {'1', '5'}, {'1', '6'}, {'1', '7'},
+ {'1', '8'}, {'1', '9'}, {'2', '0'}, {'2', '1'}, {'2', '2'}, {'2', '3'},
+ {'2', '4'}, {'2', '5'}, {'2', '6'}, {'2', '7'}, {'2', '8'}, {'2', '9'},
+ {'3', '0'}, {'3', '1'}, {'3', '2'}, {'3', '3'}, {'3', '4'}, {'3', '5'},
+ {'3', '6'}, {'3', '7'}, {'3', '8'}, {'3', '9'}, {'4', '0'}, {'4', '1'},
+ {'4', '2'}, {'4', '3'}, {'4', '4'}, {'4', '5'}, {'4', '6'}, {'4', '7'},
+ {'4', '8'}, {'4', '9'}, {'5', '0'}, {'5', '1'}, {'5', '2'}, {'5', '3'},
+ {'5', '4'}, {'5', '5'}, {'5', '6'}, {'5', '7'}, {'5', '8'}, {'5', '9'},
+ {'6', '0'}, {'6', '1'}, {'6', '2'}, {'6', '3'}, {'6', '4'}, {'6', '5'},
+ {'6', '6'}, {'6', '7'}, {'6', '8'}, {'6', '9'}, {'7', '0'}, {'7', '1'},
+ {'7', '2'}, {'7', '3'}, {'7', '4'}, {'7', '5'}, {'7', '6'}, {'7', '7'},
+ {'7', '8'}, {'7', '9'}, {'8', '0'}, {'8', '1'}, {'8', '2'}, {'8', '3'},
+ {'8', '4'}, {'8', '5'}, {'8', '6'}, {'8', '7'}, {'8', '8'}, {'8', '9'},
+ {'9', '0'}, {'9', '1'}, {'9', '2'}, {'9', '3'}, {'9', '4'}, {'9', '5'},
+ {'9', '6'}, {'9', '7'}, {'9', '8'}, {'9', '9'}};
+
+ FMT_API static constexpr const char hex_digits[] = "0123456789abcdef";
+ FMT_API static constexpr const char signs[4] = {0, '-', '+', ' '};
+ FMT_API static constexpr const unsigned prefixes[4] = {0, 0, 0x1000000u | '+',
+ 0x1000000u | ' '};
+ FMT_API static constexpr const char left_padding_shifts[5] = {31, 31, 0, 1,
+ 0};
+ FMT_API static constexpr const char right_padding_shifts[5] = {0, 31, 0, 1,
+ 0};
};
-// Maps bsr(n) to ceil(log10(pow(2, bsr(n) + 1) - 1)).
-// This is a function instead of an array to workaround a bug in GCC10 (#1810).
-FMT_INLINE uint16_t bsr2log10(int bsr) {
- static constexpr uint16_t data[] = {
- 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5,
- 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10,
- 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 15, 15,
- 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 19, 19, 20};
- return data[bsr];
-}
-
-#ifndef FMT_EXPORTED
-FMT_EXTERN template struct basic_data<void>;
+#ifdef FMT_SHARED
+// Required for -flto, -fivisibility=hidden and -shared to work
+extern template struct basic_data<void>;
#endif
// This is a struct rather than an alias to avoid shadowing warnings in gcc.
struct data : basic_data<> {};
-#ifdef FMT_BUILTIN_CLZLL
-// Returns the number of decimal digits in n. Leading zeros are not counted
-// except for n == 0 in which case count_digits returns 1.
-inline int count_digits(uint64_t n) {
- // https://github.com/fmtlib/format-benchmark/blob/master/digits10
- auto t = bsr2log10(FMT_BUILTIN_CLZLL(n | 1) ^ 63);
- return t - (n < data::zero_or_powers_of_10_64_new[t]);
-}
-#else
-// Fallback version of count_digits used when __builtin_clz is not available.
-inline int count_digits(uint64_t n) {
+template <typename T> FMT_CONSTEXPR auto count_digits_fallback(T n) -> int {
int count = 1;
for (;;) {
// Integer division is slow so do it for a group of four digits instead
count += 4;
}
}
+#if FMT_USE_INT128
+FMT_CONSTEXPR inline auto count_digits(uint128_t n) -> int {
+ return count_digits_fallback(n);
+}
#endif
-#if FMT_USE_INT128
-inline int count_digits(uint128_t n) {
- int count = 1;
- for (;;) {
- // Integer division is slow so do it for a group of four digits instead
- // of for every digit. The idea comes from the talk by Alexandrescu
- // "Three Optimization Tips for C++". See speed-test for a comparison.
- if (n < 10) return count;
- if (n < 100) return count + 1;
- if (n < 1000) return count + 2;
- if (n < 10000) return count + 3;
- n /= 10000U;
- count += 4;
+// Returns the number of decimal digits in n. Leading zeros are not counted
+// except for n == 0 in which case count_digits returns 1.
+FMT_CONSTEXPR20 inline auto count_digits(uint64_t n) -> int {
+#ifdef FMT_BUILTIN_CLZLL
+ if (!is_constant_evaluated()) {
+ // https://github.com/fmtlib/format-benchmark/blob/master/digits10
+ // Maps bsr(n) to ceil(log10(pow(2, bsr(n) + 1) - 1)).
+ constexpr uint16_t bsr2log10[] = {
+ 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5,
+ 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10,
+ 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 15, 15,
+ 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 19, 19, 20};
+ auto t = bsr2log10[FMT_BUILTIN_CLZLL(n | 1) ^ 63];
+ constexpr const uint64_t zero_or_powers_of_10[] = {
+ 0, 0, FMT_POWERS_OF_10(1U), FMT_POWERS_OF_10(1000000000ULL),
+ 10000000000000000000ULL};
+ return t - (n < zero_or_powers_of_10[t]);
}
-}
#endif
+ return count_digits_fallback(n);
+}
// Counts the number of digits in n. BITS = log2(radix).
-template <unsigned BITS, typename UInt> inline int count_digits(UInt n) {
+template <int BITS, typename UInt>
+FMT_CONSTEXPR auto count_digits(UInt n) -> int {
+#ifdef FMT_BUILTIN_CLZ
+ if (num_bits<UInt>() == 32)
+ return (FMT_BUILTIN_CLZ(static_cast<uint32_t>(n) | 1) ^ 31) / BITS + 1;
+#endif
int num_digits = 0;
do {
++num_digits;
return num_digits;
}
-template <> int count_digits<4>(detail::fallback_uintptr n);
-
-#if FMT_GCC_VERSION || FMT_CLANG_VERSION
-# define FMT_ALWAYS_INLINE inline __attribute__((always_inline))
-#elif FMT_MSC_VER
-# define FMT_ALWAYS_INLINE __forceinline
-#else
-# define FMT_ALWAYS_INLINE inline
-#endif
-
-// To suppress unnecessary security cookie checks
-#if FMT_MSC_VER && !FMT_CLANG_VERSION
-# define FMT_SAFEBUFFERS __declspec(safebuffers)
-#else
-# define FMT_SAFEBUFFERS
-#endif
+template <> auto count_digits<4>(detail::fallback_uintptr n) -> int;
+
+// It is a separate function rather than a part of count_digits to workaround
+// the lack of static constexpr in constexpr functions.
+FMT_INLINE uint64_t count_digits_inc(int n) {
+ // An optimization by Kendall Willets from https://bit.ly/3uOIQrB.
+ // This increments the upper 32 bits (log10(T) - 1) when >= T is added.
+#define FMT_INC(T) (((sizeof(#T) - 1ull) << 32) - T)
+ static constexpr uint64_t table[] = {
+ FMT_INC(0), FMT_INC(0), FMT_INC(0), // 8
+ FMT_INC(10), FMT_INC(10), FMT_INC(10), // 64
+ FMT_INC(100), FMT_INC(100), FMT_INC(100), // 512
+ FMT_INC(1000), FMT_INC(1000), FMT_INC(1000), // 4096
+ FMT_INC(10000), FMT_INC(10000), FMT_INC(10000), // 32k
+ FMT_INC(100000), FMT_INC(100000), FMT_INC(100000), // 256k
+ FMT_INC(1000000), FMT_INC(1000000), FMT_INC(1000000), // 2048k
+ FMT_INC(10000000), FMT_INC(10000000), FMT_INC(10000000), // 16M
+ FMT_INC(100000000), FMT_INC(100000000), FMT_INC(100000000), // 128M
+ FMT_INC(1000000000), FMT_INC(1000000000), FMT_INC(1000000000), // 1024M
+ FMT_INC(1000000000), FMT_INC(1000000000) // 4B
+ };
+ return table[n];
+}
-#ifdef FMT_BUILTIN_CLZ
// Optional version of count_digits for better performance on 32-bit platforms.
-inline int count_digits(uint32_t n) {
- auto t = bsr2log10(FMT_BUILTIN_CLZ(n | 1) ^ 31);
- return t - (n < data::zero_or_powers_of_10_32_new[t]);
-}
+FMT_CONSTEXPR20 inline auto count_digits(uint32_t n) -> int {
+#ifdef FMT_BUILTIN_CLZ
+ if (!is_constant_evaluated()) {
+ auto inc = count_digits_inc(FMT_BUILTIN_CLZ(n | 1) ^ 31);
+ return static_cast<int>((n + inc) >> 32);
+ }
#endif
+ return count_digits_fallback(n);
+}
-template <typename Int> constexpr int digits10() FMT_NOEXCEPT {
+template <typename Int> constexpr auto digits10() FMT_NOEXCEPT -> int {
return std::numeric_limits<Int>::digits10;
}
-template <> constexpr int digits10<int128_t>() FMT_NOEXCEPT { return 38; }
-template <> constexpr int digits10<uint128_t>() FMT_NOEXCEPT { return 38; }
-
-template <typename Char> FMT_API std::string grouping_impl(locale_ref loc);
-template <typename Char> inline std::string grouping(locale_ref loc) {
- return grouping_impl<char>(loc);
+template <> constexpr auto digits10<int128_t>() FMT_NOEXCEPT -> int {
+ return 38;
}
-template <> inline std::string grouping<wchar_t>(locale_ref loc) {
- return grouping_impl<wchar_t>(loc);
+template <> constexpr auto digits10<uint128_t>() FMT_NOEXCEPT -> int {
+ return 38;
}
-template <typename Char> FMT_API Char thousands_sep_impl(locale_ref loc);
-template <typename Char> inline Char thousands_sep(locale_ref loc) {
- return Char(thousands_sep_impl<char>(loc));
+template <typename Char> struct thousands_sep_result {
+ std::string grouping;
+ Char thousands_sep;
+};
+
+template <typename Char>
+FMT_API auto thousands_sep_impl(locale_ref loc) -> thousands_sep_result<Char>;
+template <typename Char>
+inline auto thousands_sep(locale_ref loc) -> thousands_sep_result<Char> {
+ auto result = thousands_sep_impl<char>(loc);
+ return {result.grouping, Char(result.thousands_sep)};
}
-template <> inline wchar_t thousands_sep(locale_ref loc) {
+template <>
+inline auto thousands_sep(locale_ref loc) -> thousands_sep_result<wchar_t> {
return thousands_sep_impl<wchar_t>(loc);
}
-template <typename Char> FMT_API Char decimal_point_impl(locale_ref loc);
-template <typename Char> inline Char decimal_point(locale_ref loc) {
+template <typename Char>
+FMT_API auto decimal_point_impl(locale_ref loc) -> Char;
+template <typename Char> inline auto decimal_point(locale_ref loc) -> Char {
return Char(decimal_point_impl<char>(loc));
}
-template <> inline wchar_t decimal_point(locale_ref loc) {
+template <> inline auto decimal_point(locale_ref loc) -> wchar_t {
return decimal_point_impl<wchar_t>(loc);
}
// Compares two characters for equality.
-template <typename Char> bool equal2(const Char* lhs, const char* rhs) {
- return lhs[0] == rhs[0] && lhs[1] == rhs[1];
+template <typename Char> auto equal2(const Char* lhs, const char* rhs) -> bool {
+ return lhs[0] == Char(rhs[0]) && lhs[1] == Char(rhs[1]);
}
-inline bool equal2(const char* lhs, const char* rhs) {
+inline auto equal2(const char* lhs, const char* rhs) -> bool {
return memcmp(lhs, rhs, 2) == 0;
}
// buffer of specified size. The caller must ensure that the buffer is large
// enough.
template <typename Char, typename UInt>
-inline format_decimal_result<Char*> format_decimal(Char* out, UInt value,
- int size) {
+FMT_CONSTEXPR20 auto format_decimal(Char* out, UInt value, int size)
+ -> format_decimal_result<Char*> {
FMT_ASSERT(size >= count_digits(value), "invalid digit count");
out += size;
Char* end = out;
+ if (is_constant_evaluated()) {
+ while (value >= 10) {
+ *--out = static_cast<Char>('0' + value % 10);
+ value /= 10;
+ }
+ *--out = static_cast<Char>('0' + value);
+ return {out, end};
+ }
while (value >= 100) {
// Integer division is slow so do it for a group of two digits instead
// of for every digit. The idea comes from the talk by Alexandrescu
template <typename Char, typename UInt, typename Iterator,
FMT_ENABLE_IF(!std::is_pointer<remove_cvref_t<Iterator>>::value)>
-inline format_decimal_result<Iterator> format_decimal(Iterator out, UInt value,
- int size) {
+inline auto format_decimal(Iterator out, UInt value, int size)
+ -> format_decimal_result<Iterator> {
// Buffer is large enough to hold all digits (digits10 + 1).
Char buffer[digits10<UInt>() + 1];
auto end = format_decimal(buffer, value, size).end;
- return {out, detail::copy_str<Char>(buffer, end, out)};
+ return {out, detail::copy_str_noinline<Char>(buffer, end, out)};
}
template <unsigned BASE_BITS, typename Char, typename UInt>
-inline Char* format_uint(Char* buffer, UInt value, int num_digits,
- bool upper = false) {
+FMT_CONSTEXPR auto format_uint(Char* buffer, UInt value, int num_digits,
+ bool upper = false) -> Char* {
buffer += num_digits;
Char* end = buffer;
do {
}
template <unsigned BASE_BITS, typename Char>
-Char* format_uint(Char* buffer, detail::fallback_uintptr n, int num_digits,
- bool = false) {
+auto format_uint(Char* buffer, detail::fallback_uintptr n, int num_digits,
+ bool = false) -> Char* {
auto char_digits = std::numeric_limits<unsigned char>::digits / 4;
int start = (num_digits + char_digits - 1) / char_digits - 1;
if (int start_digits = num_digits % char_digits) {
}
template <unsigned BASE_BITS, typename Char, typename It, typename UInt>
-inline It format_uint(It out, UInt value, int num_digits, bool upper = false) {
+inline auto format_uint(It out, UInt value, int num_digits, bool upper = false)
+ -> It {
if (auto ptr = to_pointer<Char>(out, to_unsigned(num_digits))) {
format_uint<BASE_BITS>(ptr, value, num_digits, upper);
return out;
// Buffer should be large enough to hold all digits (digits / BASE_BITS + 1).
char buffer[num_bits<UInt>() / BASE_BITS + 1];
format_uint<BASE_BITS>(buffer, value, num_digits, upper);
- return detail::copy_str<Char>(buffer, buffer + num_digits, out);
+ return detail::copy_str_noinline<Char>(buffer, buffer + num_digits, out);
}
// A converter from UTF-8 to UTF-16.
class utf8_to_utf16 {
private:
- wmemory_buffer buffer_;
+ basic_memory_buffer<wchar_t> buffer_;
public:
FMT_API explicit utf8_to_utf16(string_view s);
- operator wstring_view() const { return {&buffer_[0], size()}; }
- size_t size() const { return buffer_.size() - 1; }
- const wchar_t* c_str() const { return &buffer_[0]; }
- std::wstring str() const { return {&buffer_[0], size()}; }
-};
-
-template <typename T = void> struct null {};
-
-// Workaround an array initialization issue in gcc 4.8.
-template <typename Char> struct fill_t {
- private:
- enum { max_size = 4 };
- Char data_[max_size] = {Char(' '), Char(0), Char(0), Char(0)};
- unsigned char size_ = 1;
-
- public:
- FMT_CONSTEXPR void operator=(basic_string_view<Char> s) {
- auto size = s.size();
- if (size > max_size) {
- FMT_THROW(format_error("invalid fill"));
- return;
- }
- for (size_t i = 0; i < size; ++i) data_[i] = s[i];
- size_ = static_cast<unsigned char>(size);
- }
-
- size_t size() const { return size_; }
- const Char* data() const { return data_; }
-
- FMT_CONSTEXPR Char& operator[](size_t index) { return data_[index]; }
- FMT_CONSTEXPR const Char& operator[](size_t index) const {
- return data_[index];
- }
+ operator basic_string_view<wchar_t>() const { return {&buffer_[0], size()}; }
+ auto size() const -> size_t { return buffer_.size() - 1; }
+ auto c_str() const -> const wchar_t* { return &buffer_[0]; }
+ auto str() const -> std::wstring { return {&buffer_[0], size()}; }
};
-} // namespace detail
-
-// We cannot use enum classes as bit fields because of a gcc bug
-// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414.
-namespace align {
-enum type { none, left, right, center, numeric };
-}
-using align_t = align::type;
-
-namespace sign {
-enum type { none, minus, plus, space };
-}
-using sign_t = sign::type;
-
-// Format specifiers for built-in and string types.
-template <typename Char> struct basic_format_specs {
- int width;
- int precision;
- char type;
- align_t align : 4;
- sign_t sign : 3;
- bool alt : 1; // Alternate form ('#').
- detail::fill_t<Char> fill;
-
- constexpr basic_format_specs()
- : width(0),
- precision(-1),
- type(0),
- align(align::none),
- sign(sign::none),
- alt(false) {}
-};
-
-using format_specs = basic_format_specs<char>;
-namespace detail {
namespace dragonbox {
// Type-specific information that Dragonbox uses.
int exponent;
};
-template <typename T> FMT_API decimal_fp<T> to_decimal(T x) FMT_NOEXCEPT;
+template <typename T>
+FMT_API auto to_decimal(T x) FMT_NOEXCEPT -> decimal_fp<T>;
} // namespace dragonbox
template <typename T>
-constexpr typename dragonbox::float_info<T>::carrier_uint exponent_mask() {
+constexpr auto exponent_mask() ->
+ typename dragonbox::float_info<T>::carrier_uint {
using uint = typename dragonbox::float_info<T>::carrier_uint;
return ((uint(1) << dragonbox::float_info<T>::exponent_bits) - 1)
<< dragonbox::float_info<T>::significand_bits;
}
-// A floating-point presentation format.
-enum class float_format : unsigned char {
- general, // General: exponent notation or fixed point based on magnitude.
- exp, // Exponent notation with the default precision of 6, e.g. 1.2e-3.
- fixed, // Fixed point with the default precision of 6, e.g. 0.0012.
- hex
-};
-
-struct float_specs {
- int precision;
- float_format format : 8;
- sign_t sign : 8;
- bool upper : 1;
- bool locale : 1;
- bool binary32 : 1;
- bool use_grisu : 1;
- bool showpoint : 1;
-};
-
// Writes the exponent exp in the form "[+-]d{2,3}" to buffer.
-template <typename Char, typename It> It write_exponent(int exp, It it) {
+template <typename Char, typename It>
+auto write_exponent(int exp, It it) -> It {
FMT_ASSERT(-10000 < exp && exp < 10000, "exponent out of range");
if (exp < 0) {
*it++ = static_cast<Char>('-');
}
template <typename T>
-int format_float(T value, int precision, float_specs specs, buffer<char>& buf);
+auto format_float(T value, int precision, float_specs specs, buffer<char>& buf)
+ -> int;
// Formats a floating-point number with snprintf.
template <typename T>
-int snprintf_float(T value, int precision, float_specs specs,
- buffer<char>& buf);
+auto snprintf_float(T value, int precision, float_specs specs,
+ buffer<char>& buf) -> int;
-template <typename T> T promote_float(T value) { return value; }
-inline double promote_float(float value) { return static_cast<double>(value); }
-
-template <typename Handler>
-FMT_CONSTEXPR void handle_int_type_spec(char spec, Handler&& handler) {
- switch (spec) {
- case 0:
- case 'd':
- handler.on_dec();
- break;
- case 'x':
- case 'X':
- handler.on_hex();
- break;
- case 'b':
- case 'B':
- handler.on_bin();
- break;
- case 'o':
- handler.on_oct();
- break;
-#ifdef FMT_DEPRECATED_N_SPECIFIER
- case 'n':
-#endif
- case 'L':
- handler.on_num();
- break;
- case 'c':
- handler.on_chr();
- break;
- default:
- handler.on_error();
- }
+template <typename T> auto promote_float(T value) -> T { return value; }
+inline auto promote_float(float value) -> double {
+ return static_cast<double>(value);
}
-template <typename ErrorHandler = error_handler, typename Char>
-FMT_CONSTEXPR float_specs parse_float_type_spec(
- const basic_format_specs<Char>& specs, ErrorHandler&& eh = {}) {
- auto result = float_specs();
- result.showpoint = specs.alt;
- switch (specs.type) {
- case 0:
- result.format = float_format::general;
- result.showpoint |= specs.precision > 0;
- break;
- case 'G':
- result.upper = true;
- FMT_FALLTHROUGH;
- case 'g':
- result.format = float_format::general;
- break;
- case 'E':
- result.upper = true;
- FMT_FALLTHROUGH;
- case 'e':
- result.format = float_format::exp;
- result.showpoint |= specs.precision != 0;
- break;
- case 'F':
- result.upper = true;
- FMT_FALLTHROUGH;
- case 'f':
- result.format = float_format::fixed;
- result.showpoint |= specs.precision != 0;
- break;
- case 'A':
- result.upper = true;
- FMT_FALLTHROUGH;
- case 'a':
- result.format = float_format::hex;
- break;
-#ifdef FMT_DEPRECATED_N_SPECIFIER
- case 'n':
-#endif
- case 'L':
- result.locale = true;
- break;
- default:
- eh.on_error("invalid type specifier");
- break;
- }
- return result;
-}
-
-template <typename Char, typename Handler>
-FMT_CONSTEXPR void handle_char_specs(const basic_format_specs<Char>* specs,
- Handler&& handler) {
- if (!specs) return handler.on_char();
- if (specs->type && specs->type != 'c') return handler.on_int();
- if (specs->align == align::numeric || specs->sign != sign::none || specs->alt)
- handler.on_error("invalid format specifier for char");
- handler.on_char();
-}
-
-template <typename Char, typename Handler>
-FMT_CONSTEXPR void handle_cstring_type_spec(Char spec, Handler&& handler) {
- if (spec == 0 || spec == 's')
- handler.on_string();
- else if (spec == 'p')
- handler.on_pointer();
- else
- handler.on_error("invalid type specifier");
-}
-
-template <typename Char, typename ErrorHandler>
-FMT_CONSTEXPR void check_string_type_spec(Char spec, ErrorHandler&& eh) {
- if (spec != 0 && spec != 's') eh.on_error("invalid type specifier");
-}
-
-template <typename Char, typename ErrorHandler>
-FMT_CONSTEXPR void check_pointer_type_spec(Char spec, ErrorHandler&& eh) {
- if (spec != 0 && spec != 'p') eh.on_error("invalid type specifier");
-}
-
-template <typename ErrorHandler> class int_type_checker : private ErrorHandler {
- public:
- FMT_CONSTEXPR explicit int_type_checker(ErrorHandler eh) : ErrorHandler(eh) {}
-
- FMT_CONSTEXPR void on_dec() {}
- FMT_CONSTEXPR void on_hex() {}
- FMT_CONSTEXPR void on_bin() {}
- FMT_CONSTEXPR void on_oct() {}
- FMT_CONSTEXPR void on_num() {}
- FMT_CONSTEXPR void on_chr() {}
-
- FMT_CONSTEXPR void on_error() {
- ErrorHandler::on_error("invalid type specifier");
- }
-};
-
-template <typename ErrorHandler>
-class char_specs_checker : public ErrorHandler {
- private:
- char type_;
-
- public:
- FMT_CONSTEXPR char_specs_checker(char type, ErrorHandler eh)
- : ErrorHandler(eh), type_(type) {}
-
- FMT_CONSTEXPR void on_int() {
- handle_int_type_spec(type_, int_type_checker<ErrorHandler>(*this));
- }
- FMT_CONSTEXPR void on_char() {}
-};
-
-template <typename ErrorHandler>
-class cstring_type_checker : public ErrorHandler {
- public:
- FMT_CONSTEXPR explicit cstring_type_checker(ErrorHandler eh)
- : ErrorHandler(eh) {}
-
- FMT_CONSTEXPR void on_string() {}
- FMT_CONSTEXPR void on_pointer() {}
-};
-
-template <typename OutputIt, typename Char>
-FMT_NOINLINE OutputIt fill(OutputIt it, size_t n, const fill_t<Char>& fill) {
- auto fill_size = fill.size();
- if (fill_size == 1) return std::fill_n(it, n, fill[0]);
- for (size_t i = 0; i < n; ++i) it = std::copy_n(fill.data(), fill_size, it);
- return it;
+template <typename OutputIt, typename Char>
+FMT_NOINLINE FMT_CONSTEXPR auto fill(OutputIt it, size_t n,
+ const fill_t<Char>& fill) -> OutputIt {
+ auto fill_size = fill.size();
+ if (fill_size == 1) return detail::fill_n(it, n, fill[0]);
+ auto data = fill.data();
+ for (size_t i = 0; i < n; ++i)
+ it = copy_str<Char>(data, data + fill_size, it);
+ return it;
}
// Writes the output of f, padded according to format specifications in specs.
// width: output display width in (terminal) column positions.
template <align::type align = align::left, typename OutputIt, typename Char,
typename F>
-inline OutputIt write_padded(OutputIt out,
- const basic_format_specs<Char>& specs, size_t size,
- size_t width, F&& f) {
+FMT_CONSTEXPR auto write_padded(OutputIt out,
+ const basic_format_specs<Char>& specs,
+ size_t size, size_t width, F&& f) -> OutputIt {
static_assert(align == align::left || align == align::right, "");
unsigned spec_width = to_unsigned(specs.width);
size_t padding = spec_width > width ? spec_width - width : 0;
auto* shifts = align == align::left ? data::left_padding_shifts
: data::right_padding_shifts;
size_t left_padding = padding >> shifts[specs.align];
+ size_t right_padding = padding - left_padding;
auto it = reserve(out, size + padding * specs.fill.size());
- it = fill(it, left_padding, specs.fill);
+ if (left_padding != 0) it = fill(it, left_padding, specs.fill);
it = f(it);
- it = fill(it, padding - left_padding, specs.fill);
+ if (right_padding != 0) it = fill(it, right_padding, specs.fill);
return base_iterator(out, it);
}
template <align::type align = align::left, typename OutputIt, typename Char,
typename F>
-inline OutputIt write_padded(OutputIt out,
- const basic_format_specs<Char>& specs, size_t size,
- F&& f) {
+constexpr auto write_padded(OutputIt out, const basic_format_specs<Char>& specs,
+ size_t size, F&& f) -> OutputIt {
return write_padded<align>(out, specs, size, size, f);
}
+template <align::type align = align::left, typename Char, typename OutputIt>
+FMT_CONSTEXPR auto write_bytes(OutputIt out, string_view bytes,
+ const basic_format_specs<Char>& specs)
+ -> OutputIt {
+ return write_padded<align>(
+ out, specs, bytes.size(), [bytes](reserve_iterator<OutputIt> it) {
+ const char* data = bytes.data();
+ return copy_str<Char>(data, data + bytes.size(), it);
+ });
+}
+
+template <typename Char, typename OutputIt, typename UIntPtr>
+auto write_ptr(OutputIt out, UIntPtr value,
+ const basic_format_specs<Char>* specs) -> OutputIt {
+ int num_digits = count_digits<4>(value);
+ auto size = to_unsigned(num_digits) + size_t(2);
+ auto write = [=](reserve_iterator<OutputIt> it) {
+ *it++ = static_cast<Char>('0');
+ *it++ = static_cast<Char>('x');
+ return format_uint<4, Char>(it, value, num_digits);
+ };
+ return specs ? write_padded<align::right>(out, *specs, size, write)
+ : base_iterator(out, write(reserve(out, size)));
+}
+
template <typename Char, typename OutputIt>
-OutputIt write_bytes(OutputIt out, string_view bytes,
- const basic_format_specs<Char>& specs) {
- using iterator = remove_reference_t<decltype(reserve(out, 0))>;
- return write_padded(out, specs, bytes.size(), [bytes](iterator it) {
- const char* data = bytes.data();
- return copy_str<Char>(data, data + bytes.size(), it);
+FMT_CONSTEXPR auto write_char(OutputIt out, Char value,
+ const basic_format_specs<Char>& specs)
+ -> OutputIt {
+ return write_padded(out, specs, 1, [=](reserve_iterator<OutputIt> it) {
+ *it++ = value;
+ return it;
});
}
+template <typename Char, typename OutputIt>
+FMT_CONSTEXPR auto write(OutputIt out, Char value,
+ const basic_format_specs<Char>& specs,
+ locale_ref loc = {}) -> OutputIt {
+ return check_char_specs(specs)
+ ? write_char(out, value, specs)
+ : write(out, static_cast<int>(value), specs, loc);
+}
// Data for write_int that doesn't depend on output iterator type. It is used to
// avoid template code bloat.
size_t size;
size_t padding;
- write_int_data(int num_digits, string_view prefix,
- const basic_format_specs<Char>& specs)
- : size(prefix.size() + to_unsigned(num_digits)), padding(0) {
+ FMT_CONSTEXPR write_int_data(int num_digits, unsigned prefix,
+ const basic_format_specs<Char>& specs)
+ : size((prefix >> 24) + to_unsigned(num_digits)), padding(0) {
if (specs.align == align::numeric) {
auto width = to_unsigned(specs.width);
if (width > size) {
size = width;
}
} else if (specs.precision > num_digits) {
- size = prefix.size() + to_unsigned(specs.precision);
+ size = (prefix >> 24) + to_unsigned(specs.precision);
padding = to_unsigned(specs.precision - num_digits);
}
}
// Writes an integer in the format
// <left-padding><prefix><numeric-padding><digits><right-padding>
-// where <digits> are written by f(it).
-template <typename OutputIt, typename Char, typename F>
-OutputIt write_int(OutputIt out, int num_digits, string_view prefix,
- const basic_format_specs<Char>& specs, F f) {
+// where <digits> are written by write_digits(it).
+// prefix contains chars in three lower bytes and the size in the fourth byte.
+template <typename OutputIt, typename Char, typename W>
+FMT_CONSTEXPR FMT_INLINE auto write_int(OutputIt out, int num_digits,
+ unsigned prefix,
+ const basic_format_specs<Char>& specs,
+ W write_digits) -> OutputIt {
+ // Slightly faster check for specs.width == 0 && specs.precision == -1.
+ if ((specs.width | (specs.precision + 1)) == 0) {
+ auto it = reserve(out, to_unsigned(num_digits) + (prefix >> 24));
+ if (prefix != 0) {
+ for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8)
+ *it++ = static_cast<Char>(p & 0xff);
+ }
+ return base_iterator(out, write_digits(it));
+ }
auto data = write_int_data<Char>(num_digits, prefix, specs);
- using iterator = remove_reference_t<decltype(reserve(out, 0))>;
- return write_padded<align::right>(out, specs, data.size, [=](iterator it) {
- if (prefix.size() != 0)
- it = copy_str<Char>(prefix.begin(), prefix.end(), it);
- it = std::fill_n(it, data.padding, static_cast<Char>('0'));
- return f(it);
- });
+ return write_padded<align::right>(
+ out, specs, data.size, [=](reserve_iterator<OutputIt> it) {
+ for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8)
+ *it++ = static_cast<Char>(p & 0xff);
+ it = detail::fill_n(it, data.padding, static_cast<Char>('0'));
+ return write_digits(it);
+ });
+}
+
+template <typename OutputIt, typename UInt, typename Char>
+auto write_int_localized(OutputIt& out, UInt value, unsigned prefix,
+ const basic_format_specs<Char>& specs, locale_ref loc)
+ -> bool {
+ static_assert(std::is_same<uint64_or_128_t<UInt>, UInt>::value, "");
+ const auto sep_size = 1;
+ auto ts = thousands_sep<Char>(loc);
+ if (!ts.thousands_sep) return false;
+ int num_digits = count_digits(value);
+ int size = num_digits, n = num_digits;
+ const std::string& groups = ts.grouping;
+ std::string::const_iterator group = groups.cbegin();
+ while (group != groups.cend() && n > *group && *group > 0 &&
+ *group != max_value<char>()) {
+ size += sep_size;
+ n -= *group;
+ ++group;
+ }
+ if (group == groups.cend()) size += sep_size * ((n - 1) / groups.back());
+ char digits[40];
+ format_decimal(digits, value, num_digits);
+ basic_memory_buffer<Char> buffer;
+ if (prefix != 0) ++size;
+ const auto usize = to_unsigned(size);
+ buffer.resize(usize);
+ basic_string_view<Char> s(&ts.thousands_sep, sep_size);
+ // Index of a decimal digit with the least significant digit having index 0.
+ int digit_index = 0;
+ group = groups.cbegin();
+ auto p = buffer.data() + size - 1;
+ for (int i = num_digits - 1; i > 0; --i) {
+ *p-- = static_cast<Char>(digits[i]);
+ if (*group <= 0 || ++digit_index % *group != 0 ||
+ *group == max_value<char>())
+ continue;
+ if (group + 1 != groups.cend()) {
+ digit_index = 0;
+ ++group;
+ }
+ std::uninitialized_copy(s.data(), s.data() + s.size(),
+ make_checked(p, s.size()));
+ p -= s.size();
+ }
+ *p-- = static_cast<Char>(*digits);
+ if (prefix != 0) *p = static_cast<Char>(prefix);
+ auto data = buffer.data();
+ out = write_padded<align::right>(
+ out, specs, usize, usize, [=](reserve_iterator<OutputIt> it) {
+ return copy_str<Char>(data, data + size, it);
+ });
+ return true;
}
-template <typename StrChar, typename Char, typename OutputIt>
-OutputIt write(OutputIt out, basic_string_view<StrChar> s,
- const basic_format_specs<Char>& specs) {
- auto data = s.data();
- auto size = s.size();
- if (specs.precision >= 0 && to_unsigned(specs.precision) < size)
- size = code_point_index(s, to_unsigned(specs.precision));
- auto width = specs.width != 0
- ? count_code_points(basic_string_view<StrChar>(data, size))
- : 0;
- using iterator = remove_reference_t<decltype(reserve(out, 0))>;
- return write_padded(out, specs, size, width, [=](iterator it) {
- return copy_str<Char>(data, data + size, it);
- });
+FMT_CONSTEXPR inline void prefix_append(unsigned& prefix, unsigned value) {
+ prefix |= prefix != 0 ? value << 8 : value;
+ prefix += (1u + (value > 0xff ? 1 : 0)) << 24;
}
-// The handle_int_type_spec handler that writes an integer.
-template <typename OutputIt, typename Char, typename UInt> struct int_writer {
- OutputIt out;
- locale_ref locale;
- const basic_format_specs<Char>& specs;
+template <typename UInt> struct write_int_arg {
UInt abs_value;
- char prefix[4];
- unsigned prefix_size;
-
- using iterator =
- remove_reference_t<decltype(reserve(std::declval<OutputIt&>(), 0))>;
-
- string_view get_prefix() const { return string_view(prefix, prefix_size); }
-
- template <typename Int>
- int_writer(OutputIt output, locale_ref loc, Int value,
- const basic_format_specs<Char>& s)
- : out(output),
- locale(loc),
- specs(s),
- abs_value(static_cast<UInt>(value)),
- prefix_size(0) {
- static_assert(std::is_same<uint32_or_64_or_128_t<Int>, UInt>::value, "");
- if (is_negative(value)) {
- prefix[0] = '-';
- ++prefix_size;
- abs_value = 0 - abs_value;
- } else if (specs.sign != sign::none && specs.sign != sign::minus) {
- prefix[0] = specs.sign == sign::plus ? '+' : ' ';
- ++prefix_size;
- }
+ unsigned prefix;
+};
+
+template <typename T>
+FMT_CONSTEXPR auto make_write_int_arg(T value, sign_t sign)
+ -> write_int_arg<uint32_or_64_or_128_t<T>> {
+ auto prefix = 0u;
+ auto abs_value = static_cast<uint32_or_64_or_128_t<T>>(value);
+ if (is_negative(value)) {
+ prefix = 0x01000000 | '-';
+ abs_value = 0 - abs_value;
+ } else {
+ prefix = data::prefixes[sign];
}
+ return {abs_value, prefix};
+}
- void on_dec() {
+template <typename Char, typename OutputIt, typename T>
+FMT_CONSTEXPR FMT_INLINE auto write_int(OutputIt out, write_int_arg<T> arg,
+ const basic_format_specs<Char>& specs,
+ locale_ref loc) -> OutputIt {
+ static_assert(std::is_same<T, uint32_or_64_or_128_t<T>>::value, "");
+ auto abs_value = arg.abs_value;
+ auto prefix = arg.prefix;
+ auto utype = static_cast<unsigned>(specs.type);
+ switch (specs.type) {
+ case 0:
+ case 'd': {
+ if (specs.localized &&
+ write_int_localized(out, static_cast<uint64_or_128_t<T>>(abs_value),
+ prefix, specs, loc)) {
+ return out;
+ }
auto num_digits = count_digits(abs_value);
- out = write_int(
- out, num_digits, get_prefix(), specs, [this, num_digits](iterator it) {
+ return write_int(
+ out, num_digits, prefix, specs, [=](reserve_iterator<OutputIt> it) {
return format_decimal<Char>(it, abs_value, num_digits).end;
});
}
-
- void on_hex() {
- if (specs.alt) {
- prefix[prefix_size++] = '0';
- prefix[prefix_size++] = specs.type;
- }
+ case 'x':
+ case 'X': {
+ if (specs.alt) prefix_append(prefix, (utype << 8) | '0');
+ bool upper = specs.type != 'x';
int num_digits = count_digits<4>(abs_value);
- out = write_int(out, num_digits, get_prefix(), specs,
- [this, num_digits](iterator it) {
- return format_uint<4, Char>(it, abs_value, num_digits,
- specs.type != 'x');
- });
+ return write_int(
+ out, num_digits, prefix, specs, [=](reserve_iterator<OutputIt> it) {
+ return format_uint<4, Char>(it, abs_value, num_digits, upper);
+ });
}
-
- void on_bin() {
- if (specs.alt) {
- prefix[prefix_size++] = '0';
- prefix[prefix_size++] = static_cast<char>(specs.type);
- }
+ case 'b':
+ case 'B': {
+ if (specs.alt) prefix_append(prefix, (utype << 8) | '0');
int num_digits = count_digits<1>(abs_value);
- out = write_int(out, num_digits, get_prefix(), specs,
- [this, num_digits](iterator it) {
- return format_uint<1, Char>(it, abs_value, num_digits);
- });
+ return write_int(out, num_digits, prefix, specs,
+ [=](reserve_iterator<OutputIt> it) {
+ return format_uint<1, Char>(it, abs_value, num_digits);
+ });
}
-
- void on_oct() {
+ case 'o': {
int num_digits = count_digits<3>(abs_value);
if (specs.alt && specs.precision <= num_digits && abs_value != 0) {
// Octal prefix '0' is counted as a digit, so only add it if precision
// is not greater than the number of digits.
- prefix[prefix_size++] = '0';
- }
- out = write_int(out, num_digits, get_prefix(), specs,
- [this, num_digits](iterator it) {
- return format_uint<3, Char>(it, abs_value, num_digits);
- });
- }
-
- enum { sep_size = 1 };
-
- void on_num() {
- std::string groups = grouping<Char>(locale);
- if (groups.empty()) return on_dec();
- auto sep = thousands_sep<Char>(locale);
- if (!sep) return on_dec();
- int num_digits = count_digits(abs_value);
- int size = num_digits, n = num_digits;
- std::string::const_iterator group = groups.cbegin();
- while (group != groups.cend() && n > *group && *group > 0 &&
- *group != max_value<char>()) {
- size += sep_size;
- n -= *group;
- ++group;
- }
- if (group == groups.cend()) size += sep_size * ((n - 1) / groups.back());
- char digits[40];
- format_decimal(digits, abs_value, num_digits);
- basic_memory_buffer<Char> buffer;
- size += static_cast<int>(prefix_size);
- const auto usize = to_unsigned(size);
- buffer.resize(usize);
- basic_string_view<Char> s(&sep, sep_size);
- // Index of a decimal digit with the least significant digit having index 0.
- int digit_index = 0;
- group = groups.cbegin();
- auto p = buffer.data() + size - 1;
- for (int i = num_digits - 1; i > 0; --i) {
- *p-- = static_cast<Char>(digits[i]);
- if (*group <= 0 || ++digit_index % *group != 0 ||
- *group == max_value<char>())
- continue;
- if (group + 1 != groups.cend()) {
- digit_index = 0;
- ++group;
- }
- std::uninitialized_copy(s.data(), s.data() + s.size(),
- make_checked(p, s.size()));
- p -= s.size();
+ prefix_append(prefix, '0');
}
- *p-- = static_cast<Char>(*digits);
- if (prefix_size != 0) *p = static_cast<Char>('-');
- auto data = buffer.data();
- out = write_padded<align::right>(
- out, specs, usize, usize,
- [=](iterator it) { return copy_str<Char>(data, data + size, it); });
+ return write_int(out, num_digits, prefix, specs,
+ [=](reserve_iterator<OutputIt> it) {
+ return format_uint<3, Char>(it, abs_value, num_digits);
+ });
}
-
- void on_chr() { *out++ = static_cast<Char>(abs_value); }
-
- FMT_NORETURN void on_error() {
+ case 'c':
+ return write_char(out, static_cast<Char>(abs_value), specs);
+ default:
FMT_THROW(format_error("invalid type specifier"));
}
-};
+ return out;
+}
+template <typename Char, typename OutputIt, typename T,
+ FMT_ENABLE_IF(is_integral<T>::value &&
+ !std::is_same<T, bool>::value &&
+ std::is_same<OutputIt, buffer_appender<Char>>::value)>
+FMT_CONSTEXPR auto write(OutputIt out, T value,
+ const basic_format_specs<Char>& specs, locale_ref loc)
+ -> OutputIt {
+ return write_int(out, make_write_int_arg(value, specs.sign), specs, loc);
+}
+// An inlined version of write used in format string compilation.
+template <typename Char, typename OutputIt, typename T,
+ FMT_ENABLE_IF(is_integral<T>::value &&
+ !std::is_same<T, bool>::value &&
+ !std::is_same<OutputIt, buffer_appender<Char>>::value)>
+FMT_CONSTEXPR FMT_INLINE auto write(OutputIt out, T value,
+ const basic_format_specs<Char>& specs,
+ locale_ref loc) -> OutputIt {
+ return write_int(out, make_write_int_arg(value, specs.sign), specs, loc);
+}
template <typename Char, typename OutputIt>
-OutputIt write_nonfinite(OutputIt out, bool isinf,
- const basic_format_specs<Char>& specs,
- const float_specs& fspecs) {
+FMT_CONSTEXPR auto write(OutputIt out, basic_string_view<Char> s,
+ const basic_format_specs<Char>& specs) -> OutputIt {
+ auto data = s.data();
+ auto size = s.size();
+ if (specs.precision >= 0 && to_unsigned(specs.precision) < size)
+ size = code_point_index(s, to_unsigned(specs.precision));
+ auto width =
+ specs.width != 0 ? compute_width(basic_string_view<Char>(data, size)) : 0;
+ return write_padded(out, specs, size, width,
+ [=](reserve_iterator<OutputIt> it) {
+ return copy_str<Char>(data, data + size, it);
+ });
+}
+template <typename Char, typename OutputIt>
+FMT_CONSTEXPR auto write(OutputIt out,
+ basic_string_view<type_identity_t<Char>> s,
+ const basic_format_specs<Char>& specs, locale_ref)
+ -> OutputIt {
+ check_string_type_spec(specs.type);
+ return write(out, s, specs);
+}
+template <typename Char, typename OutputIt>
+FMT_CONSTEXPR auto write(OutputIt out, const Char* s,
+ const basic_format_specs<Char>& specs, locale_ref)
+ -> OutputIt {
+ return check_cstring_type_spec(specs.type)
+ ? write(out, basic_string_view<Char>(s), specs, {})
+ : write_ptr<Char>(out, to_uintptr(s), &specs);
+}
+
+template <typename Char, typename OutputIt>
+auto write_nonfinite(OutputIt out, bool isinf, basic_format_specs<Char> specs,
+ const float_specs& fspecs) -> OutputIt {
auto str =
isinf ? (fspecs.upper ? "INF" : "inf") : (fspecs.upper ? "NAN" : "nan");
constexpr size_t str_size = 3;
auto sign = fspecs.sign;
auto size = str_size + (sign ? 1 : 0);
- using iterator = remove_reference_t<decltype(reserve(out, 0))>;
- return write_padded(out, specs, size, [=](iterator it) {
+ // Replace '0'-padding with space for non-finite values.
+ const bool is_zero_fill =
+ specs.fill.size() == 1 && *specs.fill.data() == static_cast<Char>('0');
+ if (is_zero_fill) specs.fill[0] = static_cast<Char>(' ');
+ return write_padded(out, specs, size, [=](reserve_iterator<OutputIt> it) {
if (sign) *it++ = static_cast<Char>(data::signs[sign]);
return copy_str<Char>(str, str + str_size, it);
});
int exponent;
};
-inline int get_significand_size(const big_decimal_fp& fp) {
+inline auto get_significand_size(const big_decimal_fp& fp) -> int {
return fp.significand_size;
}
template <typename T>
-inline int get_significand_size(const dragonbox::decimal_fp<T>& fp) {
+inline auto get_significand_size(const dragonbox::decimal_fp<T>& fp) -> int {
return count_digits(fp.significand);
}
template <typename Char, typename OutputIt>
-inline OutputIt write_significand(OutputIt out, const char* significand,
- int& significand_size) {
+inline auto write_significand(OutputIt out, const char* significand,
+ int& significand_size) -> OutputIt {
return copy_str<Char>(significand, significand + significand_size, out);
}
template <typename Char, typename OutputIt, typename UInt>
-inline OutputIt write_significand(OutputIt out, UInt significand,
- int significand_size) {
+inline auto write_significand(OutputIt out, UInt significand,
+ int significand_size) -> OutputIt {
return format_decimal<Char>(out, significand, significand_size).end;
}
template <typename Char, typename UInt,
FMT_ENABLE_IF(std::is_integral<UInt>::value)>
-inline Char* write_significand(Char* out, UInt significand,
- int significand_size, int integral_size,
- Char decimal_point) {
+inline auto write_significand(Char* out, UInt significand, int significand_size,
+ int integral_size, Char decimal_point) -> Char* {
if (!decimal_point)
return format_decimal(out, significand, significand_size).end;
auto end = format_decimal(out + 1, significand, significand_size).end;
- if (integral_size == 1)
+ if (integral_size == 1) {
out[0] = out[1];
- else
- std::copy_n(out + 1, integral_size, out);
+ } else {
+ std::uninitialized_copy_n(out + 1, integral_size,
+ make_checked(out, to_unsigned(integral_size)));
+ }
out[integral_size] = decimal_point;
return end;
}
template <typename OutputIt, typename UInt, typename Char,
FMT_ENABLE_IF(!std::is_pointer<remove_cvref_t<OutputIt>>::value)>
-inline OutputIt write_significand(OutputIt out, UInt significand,
- int significand_size, int integral_size,
- Char decimal_point) {
+inline auto write_significand(OutputIt out, UInt significand,
+ int significand_size, int integral_size,
+ Char decimal_point) -> OutputIt {
// Buffer is large enough to hold digits (digits10 + 1) and a decimal point.
Char buffer[digits10<UInt>() + 2];
auto end = write_significand(buffer, significand, significand_size,
integral_size, decimal_point);
- return detail::copy_str<Char>(buffer, end, out);
+ return detail::copy_str_noinline<Char>(buffer, end, out);
}
template <typename OutputIt, typename Char>
-inline OutputIt write_significand(OutputIt out, const char* significand,
- int significand_size, int integral_size,
- Char decimal_point) {
- out = detail::copy_str<Char>(significand, significand + integral_size, out);
+inline auto write_significand(OutputIt out, const char* significand,
+ int significand_size, int integral_size,
+ Char decimal_point) -> OutputIt {
+ out = detail::copy_str_noinline<Char>(significand,
+ significand + integral_size, out);
if (!decimal_point) return out;
*out++ = decimal_point;
- return detail::copy_str<Char>(significand + integral_size,
- significand + significand_size, out);
+ return detail::copy_str_noinline<Char>(significand + integral_size,
+ significand + significand_size, out);
}
template <typename OutputIt, typename DecimalFP, typename Char>
-OutputIt write_float(OutputIt out, const DecimalFP& fp,
- const basic_format_specs<Char>& specs, float_specs fspecs,
- Char decimal_point) {
+auto write_float(OutputIt out, const DecimalFP& fp,
+ const basic_format_specs<Char>& specs, float_specs fspecs,
+ Char decimal_point) -> OutputIt {
auto significand = fp.significand;
int significand_size = get_significand_size(fp);
static const Char zero = static_cast<Char>('0');
auto sign = fspecs.sign;
size_t size = to_unsigned(significand_size) + (sign ? 1 : 0);
- using iterator = remove_reference_t<decltype(reserve(out, 0))>;
+ using iterator = reserve_iterator<OutputIt>;
int output_exp = fp.exponent + significand_size - 1;
auto use_exp_format = [=]() {
if (use_exp_format()) {
int num_zeros = 0;
if (fspecs.showpoint) {
- num_zeros = (std::max)(fspecs.precision - significand_size, 0);
+ num_zeros = fspecs.precision - significand_size;
+ if (num_zeros < 0) num_zeros = 0;
size += to_unsigned(num_zeros);
} else if (significand_size == 1) {
decimal_point = Char();
// Insert a decimal point after the first digit and add an exponent.
it = write_significand(it, significand, significand_size, 1,
decimal_point);
- if (num_zeros > 0) it = std::fill_n(it, num_zeros, zero);
+ if (num_zeros > 0) it = detail::fill_n(it, num_zeros, zero);
*it++ = static_cast<Char>(exp_char);
return write_exponent<Char>(output_exp, it);
};
#endif
if (fspecs.showpoint) {
if (num_zeros <= 0 && fspecs.format != float_format::fixed) num_zeros = 1;
- if (num_zeros > 0) size += to_unsigned(num_zeros);
+ if (num_zeros > 0) size += to_unsigned(num_zeros) + 1;
}
return write_padded<align::right>(out, specs, size, [&](iterator it) {
if (sign) *it++ = static_cast<Char>(data::signs[sign]);
it = write_significand<Char>(it, significand, significand_size);
- it = std::fill_n(it, fp.exponent, zero);
+ it = detail::fill_n(it, fp.exponent, zero);
if (!fspecs.showpoint) return it;
*it++ = decimal_point;
- return num_zeros > 0 ? std::fill_n(it, num_zeros, zero) : it;
+ return num_zeros > 0 ? detail::fill_n(it, num_zeros, zero) : it;
});
} else if (exp > 0) {
// 1234e-2 -> 12.34[0+]
if (sign) *it++ = static_cast<Char>(data::signs[sign]);
it = write_significand(it, significand, significand_size, exp,
decimal_point);
- return num_zeros > 0 ? std::fill_n(it, num_zeros, zero) : it;
+ return num_zeros > 0 ? detail::fill_n(it, num_zeros, zero) : it;
});
}
// 1234e-6 -> 0.001234
fspecs.precision < num_zeros) {
num_zeros = fspecs.precision;
}
- size += 2 + to_unsigned(num_zeros);
+ bool pointy = num_zeros != 0 || significand_size != 0 || fspecs.showpoint;
+ size += 1 + (pointy ? 1 : 0) + to_unsigned(num_zeros);
return write_padded<align::right>(out, specs, size, [&](iterator it) {
if (sign) *it++ = static_cast<Char>(data::signs[sign]);
*it++ = zero;
- if (num_zeros == 0 && significand_size == 0 && !fspecs.showpoint) return it;
+ if (!pointy) return it;
*it++ = decimal_point;
- it = std::fill_n(it, num_zeros, zero);
+ it = detail::fill_n(it, num_zeros, zero);
return write_significand<Char>(it, significand, significand_size);
});
}
template <typename Char, typename OutputIt, typename T,
FMT_ENABLE_IF(std::is_floating_point<T>::value)>
-OutputIt write(OutputIt out, T value, basic_format_specs<Char> specs,
- locale_ref loc = {}) {
+auto write(OutputIt out, T value, basic_format_specs<Char> specs,
+ locale_ref loc = {}) -> OutputIt {
if (const_check(!is_supported_floating_point(value))) return out;
float_specs fspecs = parse_float_type_spec(specs);
fspecs.sign = specs.sign;
if (fspecs.format == float_format::hex) {
if (fspecs.sign) buffer.push_back(data::signs[fspecs.sign]);
snprintf_float(promote_float(value), specs.precision, fspecs, buffer);
- return write_bytes(out, {buffer.data(), buffer.size()}, specs);
+ return write_bytes<align::right>(out, {buffer.data(), buffer.size()},
+ specs);
}
int precision = specs.precision >= 0 || !specs.type ? specs.precision : 6;
if (fspecs.format == float_format::exp) {
template <typename Char, typename OutputIt, typename T,
FMT_ENABLE_IF(is_fast_float<T>::value)>
-OutputIt write(OutputIt out, T value) {
+auto write(OutputIt out, T value) -> OutputIt {
if (const_check(!is_supported_floating_point(value))) return out;
using floaty = conditional_t<std::is_same<T, long double>::value, double, T>;
template <typename Char, typename OutputIt, typename T,
FMT_ENABLE_IF(std::is_floating_point<T>::value &&
!is_fast_float<T>::value)>
-inline OutputIt write(OutputIt out, T value) {
+inline auto write(OutputIt out, T value) -> OutputIt {
return write(out, value, basic_format_specs<Char>());
}
template <typename Char, typename OutputIt>
-OutputIt write_char(OutputIt out, Char value,
- const basic_format_specs<Char>& specs) {
- using iterator = remove_reference_t<decltype(reserve(out, 0))>;
- return write_padded(out, specs, 1, [=](iterator it) {
- *it++ = value;
- return it;
- });
-}
-
-template <typename Char, typename OutputIt, typename UIntPtr>
-OutputIt write_ptr(OutputIt out, UIntPtr value,
- const basic_format_specs<Char>* specs) {
- int num_digits = count_digits<4>(value);
- auto size = to_unsigned(num_digits) + size_t(2);
- using iterator = remove_reference_t<decltype(reserve(out, 0))>;
- auto write = [=](iterator it) {
- *it++ = static_cast<Char>('0');
- *it++ = static_cast<Char>('x');
- return format_uint<4, Char>(it, value, num_digits);
- };
- return specs ? write_padded<align::right>(out, *specs, size, write)
- : base_iterator(out, write(reserve(out, size)));
-}
-
-template <typename T> struct is_integral : std::is_integral<T> {};
-template <> struct is_integral<int128_t> : std::true_type {};
-template <> struct is_integral<uint128_t> : std::true_type {};
-
-template <typename Char, typename OutputIt>
-OutputIt write(OutputIt out, monostate) {
+auto write(OutputIt out, monostate, basic_format_specs<Char> = {},
+ locale_ref = {}) -> OutputIt {
FMT_ASSERT(false, "");
return out;
}
-template <typename Char, typename OutputIt,
- FMT_ENABLE_IF(!std::is_same<Char, char>::value)>
-OutputIt write(OutputIt out, string_view value) {
- auto it = reserve(out, value.size());
- it = copy_str<Char>(value.begin(), value.end(), it);
- return base_iterator(out, it);
-}
-
template <typename Char, typename OutputIt>
-OutputIt write(OutputIt out, basic_string_view<Char> value) {
+FMT_CONSTEXPR auto write(OutputIt out, basic_string_view<Char> value)
+ -> OutputIt {
auto it = reserve(out, value.size());
- it = std::copy(value.begin(), value.end(), it);
+ it = copy_str_noinline<Char>(value.begin(), value.end(), it);
return base_iterator(out, it);
}
-template <typename Char>
-buffer_appender<Char> write(buffer_appender<Char> out,
- basic_string_view<Char> value) {
- get_container(out).append(value.begin(), value.end());
- return out;
+template <typename Char, typename OutputIt, typename T,
+ FMT_ENABLE_IF(is_string<T>::value)>
+constexpr auto write(OutputIt out, const T& value) -> OutputIt {
+ return write<Char>(out, to_string_view(value));
}
template <typename Char, typename OutputIt, typename T,
FMT_ENABLE_IF(is_integral<T>::value &&
!std::is_same<T, bool>::value &&
!std::is_same<T, Char>::value)>
-OutputIt write(OutputIt out, T value) {
+FMT_CONSTEXPR auto write(OutputIt out, T value) -> OutputIt {
auto abs_value = static_cast<uint32_or_64_or_128_t<T>>(value);
bool negative = is_negative(value);
// Don't do -abs_value since it trips unsigned-integer-overflow sanitizer.
return base_iterator(out, it);
}
-template <typename Char, typename OutputIt>
-OutputIt write(OutputIt out, bool value) {
- return write<Char>(out, string_view(value ? "true" : "false"));
+// FMT_ENABLE_IF() condition separated to workaround MSVC bug
+template <
+ typename Char, typename OutputIt, typename T,
+ bool check =
+ std::is_enum<T>::value && !std::is_same<T, Char>::value &&
+ mapped_type_constant<T, basic_format_context<OutputIt, Char>>::value !=
+ type::custom_type,
+ FMT_ENABLE_IF(check)>
+FMT_CONSTEXPR auto write(OutputIt out, T value) -> OutputIt {
+ return write<Char>(
+ out, static_cast<typename std::underlying_type<T>::type>(value));
+}
+
+template <typename Char, typename OutputIt, typename T,
+ FMT_ENABLE_IF(std::is_same<T, bool>::value)>
+FMT_CONSTEXPR auto write(OutputIt out, T value,
+ const basic_format_specs<Char>& specs = {},
+ locale_ref = {}) -> OutputIt {
+ return specs.type && specs.type != 's'
+ ? write(out, value ? 1 : 0, specs, {})
+ : write_bytes(out, value ? "true" : "false", specs);
}
template <typename Char, typename OutputIt>
-OutputIt write(OutputIt out, Char value) {
+FMT_CONSTEXPR auto write(OutputIt out, Char value) -> OutputIt {
auto it = reserve(out, 1);
*it++ = value;
return base_iterator(out, it);
}
template <typename Char, typename OutputIt>
-OutputIt write(OutputIt out, const Char* value) {
+FMT_CONSTEXPR_CHAR_TRAITS auto write(OutputIt out, const Char* value)
+ -> OutputIt {
if (!value) {
FMT_THROW(format_error("string pointer is null"));
} else {
return out;
}
-template <typename Char, typename OutputIt>
-OutputIt write(OutputIt out, const void* value) {
- return write_ptr<Char>(out, to_uintptr(value), nullptr);
+template <typename Char, typename OutputIt, typename T,
+ FMT_ENABLE_IF(std::is_same<T, void>::value)>
+auto write(OutputIt out, const T* value,
+ const basic_format_specs<Char>& specs = {}, locale_ref = {})
+ -> OutputIt {
+ check_pointer_type_spec(specs.type, error_handler());
+ return write_ptr<Char>(out, to_uintptr(value), &specs);
}
template <typename Char, typename OutputIt, typename T>
-auto write(OutputIt out, const T& value) -> typename std::enable_if<
- mapped_type_constant<T, basic_format_context<OutputIt, Char>>::value ==
- type::custom_type,
- OutputIt>::type {
+FMT_CONSTEXPR auto write(OutputIt out, const T& value) ->
+ typename std::enable_if<
+ mapped_type_constant<T, basic_format_context<OutputIt, Char>>::value ==
+ type::custom_type,
+ OutputIt>::type {
using context_type = basic_format_context<OutputIt, Char>;
using formatter_type =
conditional_t<has_formatter<T, context_type>::value,
// An argument visitor that formats the argument and writes it via the output
// iterator. It's a class and not a generic lambda for compatibility with C++11.
-template <typename OutputIt, typename Char> struct default_arg_formatter {
- using context = basic_format_context<OutputIt, Char>;
+template <typename Char> struct default_arg_formatter {
+ using iterator = buffer_appender<Char>;
+ using context = buffer_context<Char>;
- OutputIt out;
+ iterator out;
basic_format_args<context> args;
locale_ref loc;
- template <typename T> OutputIt operator()(T value) {
+ template <typename T> auto operator()(T value) -> iterator {
return write<Char>(out, value);
}
-
- OutputIt operator()(typename basic_format_arg<context>::handle handle) {
+ auto operator()(typename basic_format_arg<context>::handle h) -> iterator {
basic_format_parse_context<Char> parse_ctx({});
- basic_format_context<OutputIt, Char> format_ctx(out, args, loc);
- handle.format(parse_ctx, format_ctx);
+ context format_ctx(out, args, loc);
+ h.format(parse_ctx, format_ctx);
return format_ctx.out();
}
};
-template <typename OutputIt, typename Char,
- typename ErrorHandler = error_handler>
-class arg_formatter_base {
- public:
- using iterator = OutputIt;
- using char_type = Char;
- using format_specs = basic_format_specs<Char>;
-
- private:
- iterator out_;
- locale_ref locale_;
- format_specs* specs_;
-
- // Attempts to reserve space for n extra characters in the output range.
- // Returns a pointer to the reserved range or a reference to out_.
- auto reserve(size_t n) -> decltype(detail::reserve(out_, n)) {
- return detail::reserve(out_, n);
- }
-
- using reserve_iterator = remove_reference_t<decltype(
- detail::reserve(std::declval<iterator&>(), 0))>;
-
- template <typename T> void write_int(T value, const format_specs& spec) {
- using uint_type = uint32_or_64_or_128_t<T>;
- int_writer<iterator, Char, uint_type> w(out_, locale_, value, spec);
- handle_int_type_spec(spec.type, w);
- out_ = w.out;
- }
-
- void write(char value) {
- auto&& it = reserve(1);
- *it++ = value;
- }
-
- template <typename Ch, FMT_ENABLE_IF(std::is_same<Ch, Char>::value)>
- void write(Ch value) {
- out_ = detail::write<Char>(out_, value);
- }
-
- void write(string_view value) {
- auto&& it = reserve(value.size());
- it = copy_str<Char>(value.begin(), value.end(), it);
- }
- void write(wstring_view value) {
- static_assert(std::is_same<Char, wchar_t>::value, "");
- auto&& it = reserve(value.size());
- it = std::copy(value.begin(), value.end(), it);
- }
-
- template <typename Ch>
- void write(const Ch* s, size_t size, const format_specs& specs) {
- auto width = specs.width != 0
- ? count_code_points(basic_string_view<Ch>(s, size))
- : 0;
- out_ = write_padded(out_, specs, size, width, [=](reserve_iterator it) {
- return copy_str<Char>(s, s + size, it);
- });
- }
-
- template <typename Ch>
- void write(basic_string_view<Ch> s, const format_specs& specs = {}) {
- out_ = detail::write(out_, s, specs);
- }
-
- void write_pointer(const void* p) {
- out_ = write_ptr<char_type>(out_, to_uintptr(p), specs_);
- }
-
- struct char_spec_handler : ErrorHandler {
- arg_formatter_base& formatter;
- Char value;
-
- char_spec_handler(arg_formatter_base& f, Char val)
- : formatter(f), value(val) {}
-
- void on_int() {
- // char is only formatted as int if there are specs.
- formatter.write_int(static_cast<int>(value), *formatter.specs_);
- }
- void on_char() {
- if (formatter.specs_)
- formatter.out_ = write_char(formatter.out_, value, *formatter.specs_);
- else
- formatter.write(value);
- }
- };
-
- struct cstring_spec_handler : error_handler {
- arg_formatter_base& formatter;
- const Char* value;
-
- cstring_spec_handler(arg_formatter_base& f, const Char* val)
- : formatter(f), value(val) {}
-
- void on_string() { formatter.write(value); }
- void on_pointer() { formatter.write_pointer(value); }
- };
-
- protected:
- iterator out() { return out_; }
- format_specs* specs() { return specs_; }
-
- void write(bool value) {
- if (specs_)
- write(string_view(value ? "true" : "false"), *specs_);
- else
- out_ = detail::write<Char>(out_, value);
- }
-
- void write(const Char* value) {
- if (!value) {
- FMT_THROW(format_error("string pointer is null"));
- } else {
- auto length = std::char_traits<char_type>::length(value);
- basic_string_view<char_type> sv(value, length);
- specs_ ? write(sv, *specs_) : write(sv);
- }
- }
-
- public:
- arg_formatter_base(OutputIt out, format_specs* s, locale_ref loc)
- : out_(out), locale_(loc), specs_(s) {}
-
- iterator operator()(monostate) {
- FMT_ASSERT(false, "invalid argument type");
- return out_;
- }
-
- template <typename T, FMT_ENABLE_IF(is_integral<T>::value)>
- FMT_INLINE iterator operator()(T value) {
- if (specs_)
- write_int(value, *specs_);
- else
- out_ = detail::write<Char>(out_, value);
- return out_;
- }
-
- iterator operator()(Char value) {
- handle_char_specs(specs_,
- char_spec_handler(*this, static_cast<Char>(value)));
- return out_;
- }
+template <typename Char> struct arg_formatter {
+ using iterator = buffer_appender<Char>;
+ using context = buffer_context<Char>;
- iterator operator()(bool value) {
- if (specs_ && specs_->type) return (*this)(value ? 1 : 0);
- write(value != 0);
- return out_;
- }
-
- template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
- iterator operator()(T value) {
- auto specs = specs_ ? *specs_ : format_specs();
- if (const_check(is_supported_floating_point(value)))
- out_ = detail::write(out_, value, specs, locale_);
- else
- FMT_ASSERT(false, "unsupported float argument type");
- return out_;
- }
-
- iterator operator()(const Char* value) {
- if (!specs_) return write(value), out_;
- handle_cstring_type_spec(specs_->type, cstring_spec_handler(*this, value));
- return out_;
- }
-
- iterator operator()(basic_string_view<Char> value) {
- if (specs_) {
- check_string_type_spec(specs_->type, error_handler());
- write(value, *specs_);
- } else {
- write(value);
- }
- return out_;
- }
+ iterator out;
+ const basic_format_specs<Char>& specs;
+ locale_ref locale;
- iterator operator()(const void* value) {
- if (specs_) check_pointer_type_spec(specs_->type, error_handler());
- write_pointer(value);
- return out_;
+ template <typename T>
+ FMT_CONSTEXPR FMT_INLINE auto operator()(T value) -> iterator {
+ return detail::write(out, value, specs, locale);
}
-};
-
-/** The default argument formatter. */
-template <typename OutputIt, typename Char>
-class arg_formatter : public arg_formatter_base<OutputIt, Char> {
- private:
- using char_type = Char;
- using base = arg_formatter_base<OutputIt, Char>;
- using context_type = basic_format_context<OutputIt, Char>;
-
- context_type& ctx_;
- basic_format_parse_context<char_type>* parse_ctx_;
- const Char* ptr_;
-
- public:
- using iterator = typename base::iterator;
- using format_specs = typename base::format_specs;
-
- /**
- \rst
- Constructs an argument formatter object.
- *ctx* is a reference to the formatting context,
- *specs* contains format specifier information for standard argument types.
- \endrst
- */
- explicit arg_formatter(
- context_type& ctx,
- basic_format_parse_context<char_type>* parse_ctx = nullptr,
- format_specs* specs = nullptr, const Char* ptr = nullptr)
- : base(ctx.out(), specs, ctx.locale()),
- ctx_(ctx),
- parse_ctx_(parse_ctx),
- ptr_(ptr) {}
-
- using base::operator();
-
- /** Formats an argument of a user-defined type. */
- iterator operator()(typename basic_format_arg<context_type>::handle handle) {
- if (ptr_) advance_to(*parse_ctx_, ptr_);
- handle.format(*parse_ctx_, ctx_);
- return ctx_.out();
+ auto operator()(typename basic_format_arg<context>::handle) -> iterator {
+ // User-defined types are handled separately because they require access
+ // to the parse context.
+ return out;
}
};
-template <typename Char> FMT_CONSTEXPR bool is_name_start(Char c) {
- return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c;
-}
-
-// Parses the range [begin, end) as an unsigned integer. This function assumes
-// that the range is non-empty and the first character is a digit.
-template <typename Char, typename ErrorHandler>
-FMT_CONSTEXPR int parse_nonnegative_int(const Char*& begin, const Char* end,
- ErrorHandler&& eh) {
- FMT_ASSERT(begin != end && '0' <= *begin && *begin <= '9', "");
- unsigned value = 0;
- // Convert to unsigned to prevent a warning.
- constexpr unsigned max_int = max_value<int>();
- unsigned big = max_int / 10;
- do {
- // Check for overflow.
- if (value > big) {
- value = max_int + 1;
- break;
- }
- value = value * 10 + unsigned(*begin - '0');
- ++begin;
- } while (begin != end && '0' <= *begin && *begin <= '9');
- if (value > max_int) eh.on_error("number is too big");
- return static_cast<int>(value);
-}
-
-template <typename Context> class custom_formatter {
- private:
- using char_type = typename Context::char_type;
-
- basic_format_parse_context<char_type>& parse_ctx_;
- Context& ctx_;
-
- public:
- explicit custom_formatter(basic_format_parse_context<char_type>& parse_ctx,
- Context& ctx)
- : parse_ctx_(parse_ctx), ctx_(ctx) {}
+template <typename Char> struct custom_formatter {
+ basic_format_parse_context<Char>& parse_ctx;
+ buffer_context<Char>& ctx;
- void operator()(typename basic_format_arg<Context>::handle h) const {
- h.format(parse_ctx_, ctx_);
+ void operator()(
+ typename basic_format_arg<buffer_context<Char>>::handle h) const {
+ h.format(parse_ctx, ctx);
}
-
template <typename T> void operator()(T) const {}
};
explicit FMT_CONSTEXPR width_checker(ErrorHandler& eh) : handler_(eh) {}
template <typename T, FMT_ENABLE_IF(is_integer<T>::value)>
- FMT_CONSTEXPR unsigned long long operator()(T value) {
+ FMT_CONSTEXPR auto operator()(T value) -> unsigned long long {
if (is_negative(value)) handler_.on_error("negative width");
return static_cast<unsigned long long>(value);
}
template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)>
- FMT_CONSTEXPR unsigned long long operator()(T) {
+ FMT_CONSTEXPR auto operator()(T) -> unsigned long long {
handler_.on_error("width is not integer");
return 0;
}
explicit FMT_CONSTEXPR precision_checker(ErrorHandler& eh) : handler_(eh) {}
template <typename T, FMT_ENABLE_IF(is_integer<T>::value)>
- FMT_CONSTEXPR unsigned long long operator()(T value) {
+ FMT_CONSTEXPR auto operator()(T value) -> unsigned long long {
if (is_negative(value)) handler_.on_error("negative precision");
return static_cast<unsigned long long>(value);
}
template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)>
- FMT_CONSTEXPR unsigned long long operator()(T) {
+ FMT_CONSTEXPR auto operator()(T) -> unsigned long long {
handler_.on_error("precision is not integer");
return 0;
}
ErrorHandler& handler_;
};
-// A format specifier handler that sets fields in basic_format_specs.
-template <typename Char> class specs_setter {
- public:
- explicit FMT_CONSTEXPR specs_setter(basic_format_specs<Char>& specs)
- : specs_(specs) {}
+template <template <typename> class Handler, typename FormatArg,
+ typename ErrorHandler>
+FMT_CONSTEXPR auto get_dynamic_spec(FormatArg arg, ErrorHandler eh) -> int {
+ unsigned long long value = visit_format_arg(Handler<ErrorHandler>(eh), arg);
+ if (value > to_unsigned(max_value<int>())) eh.on_error("number is too big");
+ return static_cast<int>(value);
+}
- FMT_CONSTEXPR specs_setter(const specs_setter& other)
- : specs_(other.specs_) {}
+template <typename Context, typename ID>
+FMT_CONSTEXPR auto get_arg(Context& ctx, ID id) ->
+ typename Context::format_arg {
+ auto arg = ctx.arg(id);
+ if (!arg) ctx.on_error("argument not found");
+ return arg;
+}
- FMT_CONSTEXPR void on_align(align_t align) { specs_.align = align; }
- FMT_CONSTEXPR void on_fill(basic_string_view<Char> fill) {
- specs_.fill = fill;
- }
- FMT_CONSTEXPR void on_plus() { specs_.sign = sign::plus; }
- FMT_CONSTEXPR void on_minus() { specs_.sign = sign::minus; }
- FMT_CONSTEXPR void on_space() { specs_.sign = sign::space; }
- FMT_CONSTEXPR void on_hash() { specs_.alt = true; }
+// The standard format specifier handler with checking.
+template <typename Char> class specs_handler : public specs_setter<Char> {
+ private:
+ basic_format_parse_context<Char>& parse_context_;
+ buffer_context<Char>& context_;
- FMT_CONSTEXPR void on_zero() {
- specs_.align = align::numeric;
- specs_.fill[0] = Char('0');
- }
+ // This is only needed for compatibility with gcc 4.4.
+ using format_arg = basic_format_arg<buffer_context<Char>>;
- FMT_CONSTEXPR void on_width(int width) { specs_.width = width; }
- FMT_CONSTEXPR void on_precision(int precision) {
- specs_.precision = precision;
+ FMT_CONSTEXPR auto get_arg(auto_id) -> format_arg {
+ return detail::get_arg(context_, parse_context_.next_arg_id());
}
- FMT_CONSTEXPR void end_precision() {}
- FMT_CONSTEXPR void on_type(Char type) {
- specs_.type = static_cast<char>(type);
- }
-
- protected:
- basic_format_specs<Char>& specs_;
-};
-
-template <typename ErrorHandler> class numeric_specs_checker {
- public:
- FMT_CONSTEXPR numeric_specs_checker(ErrorHandler& eh, detail::type arg_type)
- : error_handler_(eh), arg_type_(arg_type) {}
-
- FMT_CONSTEXPR void require_numeric_argument() {
- if (!is_arithmetic_type(arg_type_))
- error_handler_.on_error("format specifier requires numeric argument");
- }
-
- FMT_CONSTEXPR void check_sign() {
- require_numeric_argument();
- if (is_integral_type(arg_type_) && arg_type_ != type::int_type &&
- arg_type_ != type::long_long_type && arg_type_ != type::char_type) {
- error_handler_.on_error("format specifier requires signed argument");
- }
- }
-
- FMT_CONSTEXPR void check_precision() {
- if (is_integral_type(arg_type_) || arg_type_ == type::pointer_type)
- error_handler_.on_error("precision not allowed for this argument type");
- }
-
- private:
- ErrorHandler& error_handler_;
- detail::type arg_type_;
-};
-
-// A format specifier handler that checks if specifiers are consistent with the
-// argument type.
-template <typename Handler> class specs_checker : public Handler {
- private:
- numeric_specs_checker<Handler> checker_;
-
- // Suppress an MSVC warning about using this in initializer list.
- FMT_CONSTEXPR Handler& error_handler() { return *this; }
-
- public:
- FMT_CONSTEXPR specs_checker(const Handler& handler, detail::type arg_type)
- : Handler(handler), checker_(error_handler(), arg_type) {}
-
- FMT_CONSTEXPR specs_checker(const specs_checker& other)
- : Handler(other), checker_(error_handler(), other.arg_type_) {}
-
- FMT_CONSTEXPR void on_align(align_t align) {
- if (align == align::numeric) checker_.require_numeric_argument();
- Handler::on_align(align);
- }
-
- FMT_CONSTEXPR void on_plus() {
- checker_.check_sign();
- Handler::on_plus();
- }
-
- FMT_CONSTEXPR void on_minus() {
- checker_.check_sign();
- Handler::on_minus();
- }
-
- FMT_CONSTEXPR void on_space() {
- checker_.check_sign();
- Handler::on_space();
- }
-
- FMT_CONSTEXPR void on_hash() {
- checker_.require_numeric_argument();
- Handler::on_hash();
+ FMT_CONSTEXPR auto get_arg(int arg_id) -> format_arg {
+ parse_context_.check_arg_id(arg_id);
+ return detail::get_arg(context_, arg_id);
}
- FMT_CONSTEXPR void on_zero() {
- checker_.require_numeric_argument();
- Handler::on_zero();
+ FMT_CONSTEXPR auto get_arg(basic_string_view<Char> arg_id) -> format_arg {
+ parse_context_.check_arg_id(arg_id);
+ return detail::get_arg(context_, arg_id);
}
- FMT_CONSTEXPR void end_precision() { checker_.check_precision(); }
-};
-
-template <template <typename> class Handler, typename FormatArg,
- typename ErrorHandler>
-FMT_CONSTEXPR int get_dynamic_spec(FormatArg arg, ErrorHandler eh) {
- unsigned long long value = visit_format_arg(Handler<ErrorHandler>(eh), arg);
- if (value > to_unsigned(max_value<int>())) eh.on_error("number is too big");
- return static_cast<int>(value);
-}
-
-struct auto_id {};
-
-template <typename Context, typename ID>
-FMT_CONSTEXPR typename Context::format_arg get_arg(Context& ctx, ID id) {
- auto arg = ctx.arg(id);
- if (!arg) ctx.on_error("argument not found");
- return arg;
-}
-
-// The standard format specifier handler with checking.
-template <typename ParseContext, typename Context>
-class specs_handler : public specs_setter<typename Context::char_type> {
public:
- using char_type = typename Context::char_type;
-
- FMT_CONSTEXPR specs_handler(basic_format_specs<char_type>& specs,
- ParseContext& parse_ctx, Context& ctx)
- : specs_setter<char_type>(specs),
- parse_context_(parse_ctx),
- context_(ctx) {}
+ FMT_CONSTEXPR specs_handler(basic_format_specs<Char>& specs,
+ basic_format_parse_context<Char>& parse_ctx,
+ buffer_context<Char>& ctx)
+ : specs_setter<Char>(specs), parse_context_(parse_ctx), context_(ctx) {}
template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) {
this->specs_.width = get_dynamic_spec<width_checker>(
}
void on_error(const char* message) { context_.on_error(message); }
-
- private:
- // This is only needed for compatibility with gcc 4.4.
- using format_arg = typename Context::format_arg;
-
- FMT_CONSTEXPR format_arg get_arg(auto_id) {
- return detail::get_arg(context_, parse_context_.next_arg_id());
- }
-
- FMT_CONSTEXPR format_arg get_arg(int arg_id) {
- parse_context_.check_arg_id(arg_id);
- return detail::get_arg(context_, arg_id);
- }
-
- FMT_CONSTEXPR format_arg get_arg(basic_string_view<char_type> arg_id) {
- parse_context_.check_arg_id(arg_id);
- return detail::get_arg(context_, arg_id);
- }
-
- ParseContext& parse_context_;
- Context& context_;
-};
-
-enum class arg_id_kind { none, index, name };
-
-// An argument reference.
-template <typename Char> struct arg_ref {
- FMT_CONSTEXPR arg_ref() : kind(arg_id_kind::none), val() {}
-
- FMT_CONSTEXPR explicit arg_ref(int index)
- : kind(arg_id_kind::index), val(index) {}
- FMT_CONSTEXPR explicit arg_ref(basic_string_view<Char> name)
- : kind(arg_id_kind::name), val(name) {}
-
- FMT_CONSTEXPR arg_ref& operator=(int idx) {
- kind = arg_id_kind::index;
- val.index = idx;
- return *this;
- }
-
- arg_id_kind kind;
- union value {
- FMT_CONSTEXPR value(int id = 0) : index{id} {}
- FMT_CONSTEXPR value(basic_string_view<Char> n) : name(n) {}
-
- int index;
- basic_string_view<Char> name;
- } val;
-};
-
-// Format specifiers with width and precision resolved at formatting rather
-// than parsing time to allow re-using the same parsed specifiers with
-// different sets of arguments (precompilation of format strings).
-template <typename Char>
-struct dynamic_format_specs : basic_format_specs<Char> {
- arg_ref<Char> width_ref;
- arg_ref<Char> precision_ref;
-};
-
-// Format spec handler that saves references to arguments representing dynamic
-// width and precision to be resolved at formatting time.
-template <typename ParseContext>
-class dynamic_specs_handler
- : public specs_setter<typename ParseContext::char_type> {
- public:
- using char_type = typename ParseContext::char_type;
-
- FMT_CONSTEXPR dynamic_specs_handler(dynamic_format_specs<char_type>& specs,
- ParseContext& ctx)
- : specs_setter<char_type>(specs), specs_(specs), context_(ctx) {}
-
- FMT_CONSTEXPR dynamic_specs_handler(const dynamic_specs_handler& other)
- : specs_setter<char_type>(other),
- specs_(other.specs_),
- context_(other.context_) {}
-
- template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) {
- specs_.width_ref = make_arg_ref(arg_id);
- }
-
- template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) {
- specs_.precision_ref = make_arg_ref(arg_id);
- }
-
- FMT_CONSTEXPR void on_error(const char* message) {
- context_.on_error(message);
- }
-
- private:
- using arg_ref_type = arg_ref<char_type>;
-
- FMT_CONSTEXPR arg_ref_type make_arg_ref(int arg_id) {
- context_.check_arg_id(arg_id);
- return arg_ref_type(arg_id);
- }
-
- FMT_CONSTEXPR arg_ref_type make_arg_ref(auto_id) {
- return arg_ref_type(context_.next_arg_id());
- }
-
- FMT_CONSTEXPR arg_ref_type make_arg_ref(basic_string_view<char_type> arg_id) {
- context_.check_arg_id(arg_id);
- basic_string_view<char_type> format_str(
- context_.begin(), to_unsigned(context_.end() - context_.begin()));
- return arg_ref_type(arg_id);
- }
-
- dynamic_format_specs<char_type>& specs_;
- ParseContext& context_;
-};
-
-template <typename Char, typename IDHandler>
-FMT_CONSTEXPR const Char* parse_arg_id(const Char* begin, const Char* end,
- IDHandler&& handler) {
- FMT_ASSERT(begin != end, "");
- Char c = *begin;
- if (c == '}' || c == ':') {
- handler();
- return begin;
- }
- if (c >= '0' && c <= '9') {
- int index = 0;
- if (c != '0')
- index = parse_nonnegative_int(begin, end, handler);
- else
- ++begin;
- if (begin == end || (*begin != '}' && *begin != ':'))
- handler.on_error("invalid format string");
- else
- handler(index);
- return begin;
- }
- if (!is_name_start(c)) {
- handler.on_error("invalid format string");
- return begin;
- }
- auto it = begin;
- do {
- ++it;
- } while (it != end && (is_name_start(c = *it) || ('0' <= c && c <= '9')));
- handler(basic_string_view<Char>(begin, to_unsigned(it - begin)));
- return it;
-}
-
-// Adapts SpecHandler to IDHandler API for dynamic width.
-template <typename SpecHandler, typename Char> struct width_adapter {
- explicit FMT_CONSTEXPR width_adapter(SpecHandler& h) : handler(h) {}
-
- FMT_CONSTEXPR void operator()() { handler.on_dynamic_width(auto_id()); }
- FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_width(id); }
- FMT_CONSTEXPR void operator()(basic_string_view<Char> id) {
- handler.on_dynamic_width(id);
- }
-
- FMT_CONSTEXPR void on_error(const char* message) {
- handler.on_error(message);
- }
-
- SpecHandler& handler;
-};
-
-// Adapts SpecHandler to IDHandler API for dynamic precision.
-template <typename SpecHandler, typename Char> struct precision_adapter {
- explicit FMT_CONSTEXPR precision_adapter(SpecHandler& h) : handler(h) {}
-
- FMT_CONSTEXPR void operator()() { handler.on_dynamic_precision(auto_id()); }
- FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_precision(id); }
- FMT_CONSTEXPR void operator()(basic_string_view<Char> id) {
- handler.on_dynamic_precision(id);
- }
-
- FMT_CONSTEXPR void on_error(const char* message) {
- handler.on_error(message);
- }
-
- SpecHandler& handler;
};
-template <typename Char>
-FMT_CONSTEXPR int code_point_length(const Char* begin) {
- if (const_check(sizeof(Char) != 1)) return 1;
- constexpr char lengths[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 3, 3, 4, 0};
- int len = lengths[static_cast<unsigned char>(*begin) >> 3];
-
- // Compute the pointer to the next character early so that the next
- // iteration can start working on the next character. Neither Clang
- // nor GCC figure out this reordering on their own.
- return len + !len;
-}
-
-template <typename Char> constexpr bool is_ascii_letter(Char c) {
- return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
-}
-
-// Converts a character to ASCII. Returns a number > 127 on conversion failure.
-template <typename Char, FMT_ENABLE_IF(std::is_integral<Char>::value)>
-constexpr Char to_ascii(Char value) {
- return value;
-}
-template <typename Char, FMT_ENABLE_IF(std::is_enum<Char>::value)>
-constexpr typename std::underlying_type<Char>::type to_ascii(Char value) {
- return value;
-}
-
-// Parses fill and alignment.
-template <typename Char, typename Handler>
-FMT_CONSTEXPR const Char* parse_align(const Char* begin, const Char* end,
- Handler&& handler) {
- FMT_ASSERT(begin != end, "");
- auto align = align::none;
- auto p = begin + code_point_length(begin);
- if (p >= end) p = begin;
- for (;;) {
- switch (to_ascii(*p)) {
- case '<':
- align = align::left;
- break;
- case '>':
- align = align::right;
- break;
-#if FMT_DEPRECATED_NUMERIC_ALIGN
- case '=':
- align = align::numeric;
- break;
-#endif
- case '^':
- align = align::center;
- break;
- }
- if (align != align::none) {
- if (p != begin) {
- auto c = *begin;
- if (c == '{')
- return handler.on_error("invalid fill character '{'"), begin;
- handler.on_fill(basic_string_view<Char>(begin, to_unsigned(p - begin)));
- begin = p + 1;
- } else
- ++begin;
- handler.on_align(align);
- break;
- } else if (p == begin) {
- break;
- }
- p = begin;
- }
- return begin;
-}
-
-template <typename Char, typename Handler>
-FMT_CONSTEXPR const Char* parse_width(const Char* begin, const Char* end,
- Handler&& handler) {
- FMT_ASSERT(begin != end, "");
- if ('0' <= *begin && *begin <= '9') {
- handler.on_width(parse_nonnegative_int(begin, end, handler));
- } else if (*begin == '{') {
- ++begin;
- if (begin != end)
- begin = parse_arg_id(begin, end, width_adapter<Handler, Char>(handler));
- if (begin == end || *begin != '}')
- return handler.on_error("invalid format string"), begin;
- ++begin;
- }
- return begin;
-}
-
-template <typename Char, typename Handler>
-FMT_CONSTEXPR const Char* parse_precision(const Char* begin, const Char* end,
- Handler&& handler) {
- ++begin;
- auto c = begin != end ? *begin : Char();
- if ('0' <= c && c <= '9') {
- handler.on_precision(parse_nonnegative_int(begin, end, handler));
- } else if (c == '{') {
- ++begin;
- if (begin != end) {
- begin =
- parse_arg_id(begin, end, precision_adapter<Handler, Char>(handler));
- }
- if (begin == end || *begin++ != '}')
- return handler.on_error("invalid format string"), begin;
- } else {
- return handler.on_error("missing precision specifier"), begin;
- }
- handler.end_precision();
- return begin;
-}
-
-// Parses standard format specifiers and sends notifications about parsed
-// components to handler.
-template <typename Char, typename SpecHandler>
-FMT_CONSTEXPR const Char* parse_format_specs(const Char* begin, const Char* end,
- SpecHandler&& handler) {
- if (begin == end) return begin;
-
- begin = parse_align(begin, end, handler);
- if (begin == end) return begin;
-
- // Parse sign.
- switch (to_ascii(*begin)) {
- case '+':
- handler.on_plus();
- ++begin;
+template <template <typename> class Handler, typename Context>
+FMT_CONSTEXPR void handle_dynamic_spec(int& value,
+ arg_ref<typename Context::char_type> ref,
+ Context& ctx) {
+ switch (ref.kind) {
+ case arg_id_kind::none:
break;
- case '-':
- handler.on_minus();
- ++begin;
+ case arg_id_kind::index:
+ value = detail::get_dynamic_spec<Handler>(ctx.arg(ref.val.index),
+ ctx.error_handler());
break;
- case ' ':
- handler.on_space();
- ++begin;
+ case arg_id_kind::name:
+ value = detail::get_dynamic_spec<Handler>(ctx.arg(ref.val.name),
+ ctx.error_handler());
break;
}
- if (begin == end) return begin;
-
- if (*begin == '#') {
- handler.on_hash();
- if (++begin == end) return begin;
- }
-
- // Parse zero flag.
- if (*begin == '0') {
- handler.on_zero();
- if (++begin == end) return begin;
- }
-
- begin = parse_width(begin, end, handler);
- if (begin == end) return begin;
-
- // Parse precision.
- if (*begin == '.') {
- begin = parse_precision(begin, end, handler);
- }
-
- // Parse type.
- if (begin != end && *begin != '}') handler.on_type(*begin++);
- return begin;
-}
-
-// Return the result via the out param to workaround gcc bug 77539.
-template <bool IS_CONSTEXPR, typename T, typename Ptr = const T*>
-FMT_CONSTEXPR bool find(Ptr first, Ptr last, T value, Ptr& out) {
- for (out = first; out != last; ++out) {
- if (*out == value) return true;
- }
- return false;
-}
-
-template <>
-inline bool find<false, char>(const char* first, const char* last, char value,
- const char*& out) {
- out = static_cast<const char*>(
- std::memchr(first, value, detail::to_unsigned(last - first)));
- return out != nullptr;
}
-template <typename Handler, typename Char> struct id_adapter {
- Handler& handler;
- int arg_id;
-
- FMT_CONSTEXPR void operator()() { arg_id = handler.on_arg_id(); }
- FMT_CONSTEXPR void operator()(int id) { arg_id = handler.on_arg_id(id); }
- FMT_CONSTEXPR void operator()(basic_string_view<Char> id) {
- arg_id = handler.on_arg_id(id);
- }
- FMT_CONSTEXPR void on_error(const char* message) {
- handler.on_error(message);
- }
-};
+#define FMT_STRING_IMPL(s, base, explicit) \
+ [] { \
+ /* Use the hidden visibility as a workaround for a GCC bug (#1973). */ \
+ /* Use a macro-like name to avoid shadowing warnings. */ \
+ struct FMT_GCC_VISIBILITY_HIDDEN FMT_COMPILE_STRING : base { \
+ using char_type = fmt::remove_cvref_t<decltype(s[0])>; \
+ FMT_MAYBE_UNUSED FMT_CONSTEXPR explicit \
+ operator fmt::basic_string_view<char_type>() const { \
+ return fmt::detail_exported::compile_string_to_view<char_type>(s); \
+ } \
+ }; \
+ return FMT_COMPILE_STRING(); \
+ }()
-template <typename Char, typename Handler>
-FMT_CONSTEXPR const Char* parse_replacement_field(const Char* begin,
- const Char* end,
- Handler&& handler) {
- ++begin;
- if (begin == end) return handler.on_error("invalid format string"), end;
- if (*begin == '}') {
- handler.on_replacement_field(handler.on_arg_id(), begin);
- } else if (*begin == '{') {
- handler.on_text(begin, begin + 1);
- } else {
- auto adapter = id_adapter<Handler, Char>{handler, 0};
- begin = parse_arg_id(begin, end, adapter);
- Char c = begin != end ? *begin : Char();
- if (c == '}') {
- handler.on_replacement_field(adapter.arg_id, begin);
- } else if (c == ':') {
- begin = handler.on_format_specs(adapter.arg_id, begin + 1, end);
- if (begin == end || *begin != '}')
- return handler.on_error("unknown format specifier"), end;
- } else {
- return handler.on_error("missing '}' in format string"), end;
- }
- }
- return begin + 1;
-}
-
-template <bool IS_CONSTEXPR, typename Char, typename Handler>
-FMT_CONSTEXPR_DECL FMT_INLINE void parse_format_string(
- basic_string_view<Char> format_str, Handler&& handler) {
- auto begin = format_str.data();
- auto end = begin + format_str.size();
- if (end - begin < 32) {
- // Use a simple loop instead of memchr for small strings.
- const Char* p = begin;
- while (p != end) {
- auto c = *p++;
- if (c == '{') {
- handler.on_text(begin, p - 1);
- begin = p = parse_replacement_field(p - 1, end, handler);
- } else if (c == '}') {
- if (p == end || *p != '}')
- return handler.on_error("unmatched '}' in format string");
- handler.on_text(begin, p);
- begin = ++p;
- }
- }
- handler.on_text(begin, end);
- return;
- }
- struct writer {
- FMT_CONSTEXPR void operator()(const Char* pbegin, const Char* pend) {
- if (pbegin == pend) return;
- for (;;) {
- const Char* p = nullptr;
- if (!find<IS_CONSTEXPR>(pbegin, pend, '}', p))
- return handler_.on_text(pbegin, pend);
- ++p;
- if (p == pend || *p != '}')
- return handler_.on_error("unmatched '}' in format string");
- handler_.on_text(pbegin, p);
- pbegin = p + 1;
- }
- }
- Handler& handler_;
- } write{handler};
- while (begin != end) {
- // Doing two passes with memchr (one for '{' and another for '}') is up to
- // 2.5x faster than the naive one-pass implementation on big format strings.
- const Char* p = begin;
- if (*begin != '{' && !find<IS_CONSTEXPR>(begin + 1, end, '{', p))
- return write(begin, end);
- write(begin, p);
- begin = parse_replacement_field(p, end, handler);
- }
-}
-
-template <typename T, typename ParseContext>
-FMT_CONSTEXPR const typename ParseContext::char_type* parse_format_specs(
- ParseContext& ctx) {
- using char_type = typename ParseContext::char_type;
- using context = buffer_context<char_type>;
- using mapped_type =
- conditional_t<detail::mapped_type_constant<T, context>::value !=
- type::custom_type,
- decltype(arg_mapper<context>().map(std::declval<T>())), T>;
- auto f = conditional_t<has_formatter<mapped_type, context>::value,
- formatter<mapped_type, char_type>,
- detail::fallback_formatter<T, char_type>>();
- return f.parse(ctx);
-}
-
-template <typename OutputIt, typename Char, typename Context>
-struct format_handler : detail::error_handler {
- basic_format_parse_context<Char> parse_context;
- Context context;
-
- format_handler(OutputIt out, basic_string_view<Char> str,
- basic_format_args<Context> format_args, detail::locale_ref loc)
- : parse_context(str), context(out, format_args, loc) {}
-
- void on_text(const Char* begin, const Char* end) {
- auto size = to_unsigned(end - begin);
- auto out = context.out();
- auto&& it = reserve(out, size);
- it = std::copy_n(begin, size, it);
- context.advance_to(out);
- }
-
- int on_arg_id() { return parse_context.next_arg_id(); }
- int on_arg_id(int id) { return parse_context.check_arg_id(id), id; }
- int on_arg_id(basic_string_view<Char> id) {
- int arg_id = context.arg_id(id);
- if (arg_id < 0) on_error("argument not found");
- return arg_id;
- }
-
- FMT_INLINE void on_replacement_field(int id, const Char*) {
- auto arg = get_arg(context, id);
- context.advance_to(visit_format_arg(
- default_arg_formatter<OutputIt, Char>{context.out(), context.args(),
- context.locale()},
- arg));
- }
-
- const Char* on_format_specs(int id, const Char* begin, const Char* end) {
- auto arg = get_arg(context, id);
- if (arg.type() == type::custom_type) {
- advance_to(parse_context, begin);
- visit_format_arg(custom_formatter<Context>(parse_context, context), arg);
- return parse_context.begin();
- }
- auto specs = basic_format_specs<Char>();
- if (begin + 1 < end && begin[1] == '}' && is_ascii_letter(*begin)) {
- specs.type = static_cast<char>(*begin++);
- } else {
- using parse_context_t = basic_format_parse_context<Char>;
- specs_checker<specs_handler<parse_context_t, Context>> handler(
- specs_handler<parse_context_t, Context>(specs, parse_context,
- context),
- arg.type());
- begin = parse_format_specs(begin, end, handler);
- if (begin == end || *begin != '}')
- on_error("missing '}' in format string");
- }
- context.advance_to(visit_format_arg(
- arg_formatter<OutputIt, Char>(context, &parse_context, &specs), arg));
- return begin;
- }
-};
+/**
+ \rst
+ Constructs a compile-time format string from a string literal *s*.
-// A parse context with extra argument id checks. It is only used at compile
-// time because adding checks at runtime would introduce substantial overhead
-// and would be redundant since argument ids are checked when arguments are
-// retrieved anyway.
-template <typename Char, typename ErrorHandler = error_handler>
-class compile_parse_context
- : public basic_format_parse_context<Char, ErrorHandler> {
- private:
- int num_args_;
- using base = basic_format_parse_context<Char, ErrorHandler>;
+ **Example**::
- public:
- explicit FMT_CONSTEXPR compile_parse_context(
- basic_string_view<Char> format_str, int num_args = max_value<int>(),
- ErrorHandler eh = {})
- : base(format_str, eh), num_args_(num_args) {}
+ // A compile-time error because 'd' is an invalid specifier for strings.
+ std::string s = fmt::format(FMT_STRING("{:d}"), "foo");
+ \endrst
+ */
+#define FMT_STRING(s) FMT_STRING_IMPL(s, fmt::compile_string, )
- FMT_CONSTEXPR int next_arg_id() {
- int id = base::next_arg_id();
- if (id >= num_args_) this->on_error("argument not found");
- return id;
- }
+#if FMT_USE_USER_DEFINED_LITERALS
+template <typename Char> struct udl_formatter {
+ basic_string_view<Char> str;
- FMT_CONSTEXPR void check_arg_id(int id) {
- base::check_arg_id(id);
- if (id >= num_args_) this->on_error("argument not found");
+ template <typename... T>
+ auto operator()(T&&... args) const -> std::basic_string<Char> {
+ return vformat(str, fmt::make_args_checked<T...>(str, args...));
}
- using base::check_arg_id;
};
-template <typename Char, typename ErrorHandler, typename... Args>
-class format_string_checker {
- public:
- explicit FMT_CONSTEXPR format_string_checker(
- basic_string_view<Char> format_str, ErrorHandler eh)
- : context_(format_str, num_args, eh),
- parse_funcs_{&parse_format_specs<Args, parse_context_type>...} {}
+# if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS
+template <typename T, typename Char, size_t N,
+ fmt::detail_exported::fixed_string<Char, N> Str>
+struct statically_named_arg : view {
+ static constexpr auto name = Str.data;
- FMT_CONSTEXPR void on_text(const Char*, const Char*) {}
+ const T& value;
+ statically_named_arg(const T& v) : value(v) {}
+};
- FMT_CONSTEXPR int on_arg_id() { return context_.next_arg_id(); }
- FMT_CONSTEXPR int on_arg_id(int id) { return context_.check_arg_id(id), id; }
- FMT_CONSTEXPR int on_arg_id(basic_string_view<Char>) {
- on_error("compile-time checks don't support named arguments");
- return 0;
- }
+template <typename T, typename Char, size_t N,
+ fmt::detail_exported::fixed_string<Char, N> Str>
+struct is_named_arg<statically_named_arg<T, Char, N, Str>> : std::true_type {};
- FMT_CONSTEXPR void on_replacement_field(int, const Char*) {}
+template <typename T, typename Char, size_t N,
+ fmt::detail_exported::fixed_string<Char, N> Str>
+struct is_statically_named_arg<statically_named_arg<T, Char, N, Str>>
+ : std::true_type {};
- FMT_CONSTEXPR const Char* on_format_specs(int id, const Char* begin,
- const Char*) {
- advance_to(context_, begin);
- return id < num_args ? parse_funcs_[id](context_) : begin;
+template <typename Char, size_t N,
+ fmt::detail_exported::fixed_string<Char, N> Str>
+struct udl_arg {
+ template <typename T> auto operator=(T&& value) const {
+ return statically_named_arg<T, Char, N, Str>(std::forward<T>(value));
}
+};
+# else
+template <typename Char> struct udl_arg {
+ const Char* str;
- FMT_CONSTEXPR void on_error(const char* message) {
- context_.on_error(message);
+ template <typename T> auto operator=(T&& value) const -> named_arg<Char, T> {
+ return {str, std::forward<T>(value)};
}
-
- private:
- using parse_context_type = compile_parse_context<Char, ErrorHandler>;
- enum { num_args = sizeof...(Args) };
-
- // Format specifier parsing function.
- using parse_func = const Char* (*)(parse_context_type&);
-
- parse_context_type context_;
- parse_func parse_funcs_[num_args > 0 ? num_args : 1];
};
+# endif
+#endif // FMT_USE_USER_DEFINED_LITERALS
-// Converts string literals to basic_string_view.
-template <typename Char, size_t N>
-FMT_CONSTEXPR basic_string_view<Char> compile_string_to_view(
- const Char (&s)[N]) {
- // Remove trailing null character if needed. Won't be present if this is used
- // with raw character array (i.e. not defined as a string).
- return {s,
- N - ((std::char_traits<Char>::to_int_type(s[N - 1]) == 0) ? 1 : 0)};
-}
-
-// Converts string_view to basic_string_view.
-template <typename Char>
-FMT_CONSTEXPR basic_string_view<Char> compile_string_to_view(
- const std_string_view<Char>& s) {
- return {s.data(), s.size()};
-}
-
-#define FMT_STRING_IMPL(s, base) \
- [] { \
- /* Use a macro-like name to avoid shadowing warnings. */ \
- struct FMT_COMPILE_STRING : base { \
- using char_type = fmt::remove_cvref_t<decltype(s[0])>; \
- FMT_MAYBE_UNUSED FMT_CONSTEXPR \
- operator fmt::basic_string_view<char_type>() const { \
- return fmt::detail::compile_string_to_view<char_type>(s); \
- } \
- }; \
- return FMT_COMPILE_STRING(); \
- }()
-
-/**
- \rst
- Constructs a compile-time format string from a string literal *s*.
-
- **Example**::
-
- // A compile-time error because 'd' is an invalid specifier for strings.
- std::string s = fmt::format(FMT_STRING("{:d}"), "foo");
- \endrst
- */
-#define FMT_STRING(s) FMT_STRING_IMPL(s, fmt::compile_string)
-
-template <typename... Args, typename S,
- enable_if_t<(is_compile_string<S>::value), int>>
-void check_format_string(S format_str) {
- FMT_CONSTEXPR_DECL auto s = to_string_view(format_str);
- using checker = format_string_checker<typename S::char_type, error_handler,
- remove_cvref_t<Args>...>;
- FMT_CONSTEXPR_DECL bool invalid_format =
- (parse_format_string<true>(s, checker(s, {})), true);
- (void)invalid_format;
-}
-
-template <template <typename> class Handler, typename Context>
-void handle_dynamic_spec(int& value, arg_ref<typename Context::char_type> ref,
- Context& ctx) {
- switch (ref.kind) {
- case arg_id_kind::none:
- break;
- case arg_id_kind::index:
- value = detail::get_dynamic_spec<Handler>(ctx.arg(ref.val.index),
- ctx.error_handler());
- break;
- case arg_id_kind::name:
- value = detail::get_dynamic_spec<Handler>(ctx.arg(ref.val.name),
- ctx.error_handler());
- break;
- }
+template <typename Locale, typename Char>
+auto vformat(const Locale& loc, basic_string_view<Char> format_str,
+ basic_format_args<buffer_context<type_identity_t<Char>>> args)
+ -> std::basic_string<Char> {
+ basic_memory_buffer<Char> buffer;
+ detail::vformat_to(buffer, format_str, args, detail::locale_ref(loc));
+ return {buffer.data(), buffer.size()};
}
-using format_func = void (*)(detail::buffer<char>&, int, string_view);
+using format_func = void (*)(detail::buffer<char>&, int, const char*);
FMT_API void format_error_code(buffer<char>& out, int error_code,
string_view message) FMT_NOEXCEPT;
FMT_API void report_error(format_func func, int error_code,
- string_view message) FMT_NOEXCEPT;
-} // namespace detail
+ const char* message) FMT_NOEXCEPT;
+FMT_END_DETAIL_NAMESPACE
-template <typename OutputIt, typename Char>
-using arg_formatter FMT_DEPRECATED_ALIAS =
- detail::arg_formatter<OutputIt, Char>;
+FMT_API auto vsystem_error(int error_code, string_view format_str,
+ format_args args) -> std::system_error;
/**
- An error returned by an operating system or a language runtime,
- for example a file opening error.
-*/
-FMT_CLASS_API
-class FMT_API system_error : public std::runtime_error {
- private:
- void init(int err_code, string_view format_str, format_args args);
-
- protected:
- int error_code_;
+ \rst
+ Constructs :class:`std::system_error` with a message formatted with
+ ``fmt::format(fmt, args...)``.
+ *error_code* is a system error code as given by ``errno``.
- system_error() : std::runtime_error(""), error_code_(0) {}
+ **Example**::
- public:
- /**
- \rst
- Constructs a :class:`fmt::system_error` object with a description
- formatted with `fmt::format_system_error`. *message* and additional
- arguments passed into the constructor are formatted similarly to
- `fmt::format`.
-
- **Example**::
-
- // This throws a system_error with the description
- // cannot open file 'madeup': No such file or directory
- // or similar (system message may vary).
- const char *filename = "madeup";
- std::FILE *file = std::fopen(filename, "r");
- if (!file)
- throw fmt::system_error(errno, "cannot open file '{}'", filename);
- \endrst
- */
- template <typename... Args>
- system_error(int error_code, string_view message, const Args&... args)
- : std::runtime_error("") {
- init(error_code, message, make_format_args(args...));
- }
- system_error(const system_error&) = default;
- system_error& operator=(const system_error&) = default;
- system_error(system_error&&) = default;
- system_error& operator=(system_error&&) = default;
- ~system_error() FMT_NOEXCEPT FMT_OVERRIDE;
-
- int error_code() const { return error_code_; }
-};
+ // This throws std::system_error with the description
+ // cannot open file 'madeup': No such file or directory
+ // or similar (system message may vary).
+ const char* filename = "madeup";
+ std::FILE* file = std::fopen(filename, "r");
+ if (!file)
+ throw fmt::system_error(errno, "cannot open file '{}'", filename);
+ \endrst
+*/
+template <typename... T>
+auto system_error(int error_code, format_string<T...> fmt, T&&... args)
+ -> std::system_error {
+ return vsystem_error(error_code, fmt, fmt::make_format_args(args...));
+}
/**
\rst
- Formats an error returned by an operating system or a language runtime,
- for example a file opening error, and writes it to *out* in the following
- form:
+ Formats an error message for an error returned by an operating system or a
+ language runtime, for example a file opening error, and writes it to *out*.
+ The format is the same as the one used by ``std::system_error(ec, message)``
+ where ``ec`` is ``std::error_code(error_code, std::generic_category()})``.
+ It is implementation-defined but normally looks like:
.. parsed-literal::
*<message>*: *<system-message>*
- where *<message>* is the passed message and *<system-message>* is
- the system message corresponding to the error code.
+ where *<message>* is the passed message and *<system-message>* is the system
+ message corresponding to the error code.
*error_code* is a system error code as given by ``errno``.
- If *error_code* is not a valid error code such as -1, the system message
- may look like "Unknown error -1" and is platform-dependent.
\endrst
*/
FMT_API void format_system_error(detail::buffer<char>& out, int error_code,
- string_view message) FMT_NOEXCEPT;
+ const char* message) FMT_NOEXCEPT;
// Reports a system error without throwing an exception.
// Can be used to report errors from destructors.
FMT_API void report_system_error(int error_code,
- string_view message) FMT_NOEXCEPT;
+ const char* message) FMT_NOEXCEPT;
/** Fast integer formatter. */
class format_int {
mutable char buffer_[buffer_size];
char* str_;
- template <typename UInt> char* format_unsigned(UInt value) {
+ template <typename UInt> auto format_unsigned(UInt value) -> char* {
auto n = static_cast<detail::uint32_or_64_or_128_t<UInt>>(value);
return detail::format_decimal(buffer_, n, buffer_size - 1).begin;
}
- template <typename Int> char* format_signed(Int value) {
+ template <typename Int> auto format_signed(Int value) -> char* {
auto abs_value = static_cast<detail::uint32_or_64_or_128_t<Int>>(value);
bool negative = value < 0;
if (negative) abs_value = 0 - abs_value;
: str_(format_unsigned(value)) {}
/** Returns the number of characters written to the output buffer. */
- size_t size() const {
+ auto size() const -> size_t {
return detail::to_unsigned(buffer_ - str_ + buffer_size - 1);
}
Returns a pointer to the output buffer content. No terminating null
character is appended.
*/
- const char* data() const { return str_; }
+ auto data() const -> const char* { return str_; }
/**
Returns a pointer to the output buffer content with terminating null
character appended.
*/
- const char* c_str() const {
+ auto c_str() const -> const char* {
buffer_[buffer_size - 1] = '\0';
return str_;
}
Returns the content of the output buffer as an ``std::string``.
\endrst
*/
- std::string str() const { return std::string(str_, size()); }
+ auto str() const -> std::string { return std::string(str_, size()); }
};
-// A formatter specialization for the core types corresponding to detail::type
-// constants.
template <typename T, typename Char>
-struct formatter<T, Char,
- enable_if_t<detail::type_constant<T, Char>::value !=
- detail::type::custom_type>> {
- FMT_CONSTEXPR formatter() = default;
-
- // Parses format specifiers stopping either at the end of the range or at the
- // terminating '}'.
- template <typename ParseContext>
- FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
- using handler_type = detail::dynamic_specs_handler<ParseContext>;
- auto type = detail::type_constant<T, Char>::value;
- detail::specs_checker<handler_type> handler(handler_type(specs_, ctx),
- type);
- auto it = parse_format_specs(ctx.begin(), ctx.end(), handler);
- auto eh = ctx.error_handler();
- switch (type) {
- case detail::type::none_type:
- FMT_ASSERT(false, "invalid argument type");
- break;
- case detail::type::int_type:
- case detail::type::uint_type:
- case detail::type::long_long_type:
- case detail::type::ulong_long_type:
- case detail::type::int128_type:
- case detail::type::uint128_type:
- case detail::type::bool_type:
- handle_int_type_spec(specs_.type,
- detail::int_type_checker<decltype(eh)>(eh));
- break;
- case detail::type::char_type:
- handle_char_specs(
- &specs_, detail::char_specs_checker<decltype(eh)>(specs_.type, eh));
- break;
- case detail::type::float_type:
- if (detail::const_check(FMT_USE_FLOAT))
- detail::parse_float_type_spec(specs_, eh);
- else
- FMT_ASSERT(false, "float support disabled");
- break;
- case detail::type::double_type:
- if (detail::const_check(FMT_USE_DOUBLE))
- detail::parse_float_type_spec(specs_, eh);
- else
- FMT_ASSERT(false, "double support disabled");
- break;
- case detail::type::long_double_type:
- if (detail::const_check(FMT_USE_LONG_DOUBLE))
- detail::parse_float_type_spec(specs_, eh);
- else
- FMT_ASSERT(false, "long double support disabled");
- break;
- case detail::type::cstring_type:
- detail::handle_cstring_type_spec(
- specs_.type, detail::cstring_type_checker<decltype(eh)>(eh));
- break;
- case detail::type::string_type:
- detail::check_string_type_spec(specs_.type, eh);
- break;
- case detail::type::pointer_type:
- detail::check_pointer_type_spec(specs_.type, eh);
- break;
- case detail::type::custom_type:
- // Custom format specifiers should be checked in parse functions of
- // formatter specializations.
- break;
- }
- return it;
- }
-
- template <typename FormatContext>
- auto format(const T& val, FormatContext& ctx) -> decltype(ctx.out()) {
- detail::handle_dynamic_spec<detail::width_checker>(specs_.width,
- specs_.width_ref, ctx);
+template <typename FormatContext>
+FMT_CONSTEXPR FMT_INLINE auto
+formatter<T, Char,
+ enable_if_t<detail::type_constant<T, Char>::value !=
+ detail::type::custom_type>>::format(const T& val,
+ FormatContext& ctx)
+ const -> decltype(ctx.out()) {
+ if (specs_.width_ref.kind != detail::arg_id_kind::none ||
+ specs_.precision_ref.kind != detail::arg_id_kind::none) {
+ auto specs = specs_;
+ detail::handle_dynamic_spec<detail::width_checker>(specs.width,
+ specs.width_ref, ctx);
detail::handle_dynamic_spec<detail::precision_checker>(
- specs_.precision, specs_.precision_ref, ctx);
- using af = detail::arg_formatter<typename FormatContext::iterator,
- typename FormatContext::char_type>;
- return visit_format_arg(af(ctx, nullptr, &specs_),
- detail::make_arg<FormatContext>(val));
+ specs.precision, specs.precision_ref, ctx);
+ return detail::write<Char>(ctx.out(), val, specs, ctx.locale());
}
+ return detail::write<Char>(ctx.out(), val, specs_, ctx.locale());
+}
- private:
- detail::dynamic_format_specs<Char> specs_;
-};
-
-#define FMT_FORMAT_AS(Type, Base) \
- template <typename Char> \
- struct formatter<Type, Char> : formatter<Base, Char> { \
- template <typename FormatContext> \
- auto format(Type const& val, FormatContext& ctx) -> decltype(ctx.out()) { \
- return formatter<Base, Char>::format(val, ctx); \
- } \
+#define FMT_FORMAT_AS(Type, Base) \
+ template <typename Char> \
+ struct formatter<Type, Char> : formatter<Base, Char> { \
+ template <typename FormatContext> \
+ auto format(Type const& val, FormatContext& ctx) const \
+ -> decltype(ctx.out()) { \
+ return formatter<Base, Char>::format(static_cast<Base>(val), ctx); \
+ } \
}
FMT_FORMAT_AS(signed char, int);
template <typename Char>
struct formatter<void*, Char> : formatter<const void*, Char> {
template <typename FormatContext>
- auto format(void* val, FormatContext& ctx) -> decltype(ctx.out()) {
+ auto format(void* val, FormatContext& ctx) const -> decltype(ctx.out()) {
return formatter<const void*, Char>::format(val, ctx);
}
};
template <typename Char, size_t N>
struct formatter<Char[N], Char> : formatter<basic_string_view<Char>, Char> {
template <typename FormatContext>
- auto format(const Char* val, FormatContext& ctx) -> decltype(ctx.out()) {
+ FMT_CONSTEXPR auto format(const Char* val, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
return formatter<basic_string_view<Char>, Char>::format(val, ctx);
}
};
// };
template <typename Char = char> class dynamic_formatter {
private:
+ detail::dynamic_format_specs<Char> specs_;
+ const Char* format_str_;
+
struct null_handler : detail::error_handler {
void on_align(align_t) {}
- void on_plus() {}
- void on_minus() {}
- void on_space() {}
+ void on_sign(sign_t) {}
void on_hash() {}
};
+ template <typename Context> void handle_specs(Context& ctx) {
+ detail::handle_dynamic_spec<detail::width_checker>(specs_.width,
+ specs_.width_ref, ctx);
+ detail::handle_dynamic_spec<detail::precision_checker>(
+ specs_.precision, specs_.precision_ref, ctx);
+ }
+
public:
template <typename ParseContext>
- auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
format_str_ = ctx.begin();
// Checks are deferred to formatting time when the argument type is known.
detail::dynamic_specs_handler<ParseContext> handler(specs_, ctx);
- return parse_format_specs(ctx.begin(), ctx.end(), handler);
+ return detail::parse_format_specs(ctx.begin(), ctx.end(), handler);
}
template <typename T, typename FormatContext>
detail::specs_checker<null_handler> checker(
null_handler(), detail::mapped_type_constant<T, FormatContext>::value);
checker.on_align(specs_.align);
- switch (specs_.sign) {
- case sign::none:
- break;
- case sign::plus:
- checker.on_plus();
- break;
- case sign::minus:
- checker.on_minus();
- break;
- case sign::space:
- checker.on_space();
- break;
- }
+ if (specs_.sign != sign::none) checker.on_sign(specs_.sign);
if (specs_.alt) checker.on_hash();
if (specs_.precision >= 0) checker.end_precision();
- using af = detail::arg_formatter<typename FormatContext::iterator,
- typename FormatContext::char_type>;
- visit_format_arg(af(ctx, nullptr, &specs_),
- detail::make_arg<FormatContext>(val));
- return ctx.out();
+ return detail::write<Char>(ctx.out(), val, specs_, ctx.locale());
}
-
- private:
- template <typename Context> void handle_specs(Context& ctx) {
- detail::handle_dynamic_spec<detail::width_checker>(specs_.width,
- specs_.width_ref, ctx);
- detail::handle_dynamic_spec<detail::precision_checker>(
- specs_.precision, specs_.precision_ref, ctx);
- }
-
- detail::dynamic_format_specs<Char> specs_;
- const Char* format_str_;
};
-template <typename Char, typename ErrorHandler>
-FMT_CONSTEXPR void advance_to(
- basic_format_parse_context<Char, ErrorHandler>& ctx, const Char* p) {
- ctx.advance_to(ctx.begin() + (p - &*ctx.begin()));
-}
-
/**
\rst
Converts ``p`` to ``const void*`` for pointer formatting.
auto s = fmt::format("{}", fmt::ptr(p));
\endrst
*/
-template <typename T> inline const void* ptr(const T* p) { return p; }
-template <typename T> inline const void* ptr(const std::unique_ptr<T>& p) {
+template <typename T> auto ptr(T p) -> const void* {
+ static_assert(std::is_pointer<T>::value, "");
+ return detail::bit_cast<const void*>(p);
+}
+template <typename T> auto ptr(const std::unique_ptr<T>& p) -> const void* {
return p.get();
}
-template <typename T> inline const void* ptr(const std::shared_ptr<T>& p) {
+template <typename T> auto ptr(const std::shared_ptr<T>& p) -> const void* {
return p.get();
}
}
};
-template <typename It, typename Sentinel, typename Char>
-struct arg_join : detail::view {
+template <typename It, typename Sentinel, typename Char = char>
+struct join_view : detail::view {
It begin;
Sentinel end;
basic_string_view<Char> sep;
- arg_join(It b, Sentinel e, basic_string_view<Char> s)
+ join_view(It b, Sentinel e, basic_string_view<Char> s)
: begin(b), end(e), sep(s) {}
};
template <typename It, typename Sentinel, typename Char>
-struct formatter<arg_join<It, Sentinel, Char>, Char>
- : formatter<typename std::iterator_traits<It>::value_type, Char> {
+using arg_join FMT_DEPRECATED_ALIAS = join_view<It, Sentinel, Char>;
+
+template <typename It, typename Sentinel, typename Char>
+struct formatter<join_view<It, Sentinel, Char>, Char> {
+ private:
+ using value_type = typename std::iterator_traits<It>::value_type;
+ using context = buffer_context<Char>;
+ using mapper = detail::arg_mapper<context>;
+
+ template <typename T, FMT_ENABLE_IF(has_formatter<T, context>::value)>
+ static auto map(const T& value) -> const T& {
+ return value;
+ }
+ template <typename T, FMT_ENABLE_IF(!has_formatter<T, context>::value)>
+ static auto map(const T& value) -> decltype(mapper().map(value)) {
+ return mapper().map(value);
+ }
+
+ using formatter_type =
+ conditional_t<is_formattable<value_type, Char>::value,
+ formatter<remove_cvref_t<decltype(map(
+ std::declval<const value_type&>()))>,
+ Char>,
+ detail::fallback_formatter<value_type, Char>>;
+
+ formatter_type value_formatter_;
+
+ public:
+ template <typename ParseContext>
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+ return value_formatter_.parse(ctx);
+ }
+
template <typename FormatContext>
- auto format(const arg_join<It, Sentinel, Char>& value, FormatContext& ctx)
+ auto format(const join_view<It, Sentinel, Char>& value, FormatContext& ctx)
-> decltype(ctx.out()) {
- using base = formatter<typename std::iterator_traits<It>::value_type, Char>;
auto it = value.begin;
auto out = ctx.out();
if (it != value.end) {
- out = base::format(*it++, ctx);
+ out = value_formatter_.format(map(*it++), ctx);
while (it != value.end) {
- out = std::copy(value.sep.begin(), value.sep.end(), out);
+ out = detail::copy_str<Char>(value.sep.begin(), value.sep.end(), out);
ctx.advance_to(out);
- out = base::format(*it++, ctx);
+ out = value_formatter_.format(map(*it++), ctx);
}
}
return out;
};
/**
- Returns an object that formats the iterator range `[begin, end)` with elements
- separated by `sep`.
+ Returns an object that formats the iterator range `[begin, end)` with
+ elements separated by `sep`.
*/
template <typename It, typename Sentinel>
-arg_join<It, Sentinel, char> join(It begin, Sentinel end, string_view sep) {
- return {begin, end, sep};
-}
-
-template <typename It, typename Sentinel>
-arg_join<It, Sentinel, wchar_t> join(It begin, Sentinel end, wstring_view sep) {
+auto join(It begin, Sentinel end, string_view sep) -> join_view<It, Sentinel> {
return {begin, end, sep};
}
\endrst
*/
template <typename Range>
-arg_join<detail::iterator_t<Range>, detail::sentinel_t<Range>, char> join(
- Range&& range, string_view sep) {
- return join(std::begin(range), std::end(range), sep);
-}
-
-template <typename Range>
-arg_join<detail::iterator_t<Range>, detail::sentinel_t<Range>, wchar_t> join(
- Range&& range, wstring_view sep) {
+auto join(Range&& range, string_view sep)
+ -> join_view<detail::iterator_t<Range>, detail::sentinel_t<Range>> {
return join(std::begin(range), std::end(range), sep);
}
\endrst
*/
template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
-inline std::string to_string(const T& value) {
- std::string result;
+inline auto to_string(const T& value) -> std::string {
+ auto result = std::string();
detail::write<char>(std::back_inserter(result), value);
return result;
}
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
-inline std::string to_string(T value) {
- // The buffer should be large enough to store the number including the sign or
- // "false" for bool.
+inline auto to_string(T value) -> std::string {
+ // The buffer should be large enough to store the number including the sign
+ // or "false" for bool.
constexpr int max_size = detail::digits10<T>() + 2;
char buffer[max_size > 5 ? static_cast<unsigned>(max_size) : 5];
char* begin = buffer;
return std::string(begin, detail::write<char>(begin, value));
}
-/**
- Converts *value* to ``std::wstring`` using the default format for type *T*.
- */
-template <typename T> inline std::wstring to_wstring(const T& value) {
- return format(L"{}", value);
-}
-
template <typename Char, size_t SIZE>
-std::basic_string<Char> to_string(const basic_memory_buffer<Char, SIZE>& buf) {
+auto to_string(const basic_memory_buffer<Char, SIZE>& buf)
+ -> std::basic_string<Char> {
auto size = buf.size();
detail::assume(size < std::basic_string<Char>().max_size());
return std::basic_string<Char>(buf.data(), size);
}
+FMT_BEGIN_DETAIL_NAMESPACE
+
template <typename Char>
-void detail::vformat_to(
- detail::buffer<Char>& buf, basic_string_view<Char> format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args,
- detail::locale_ref loc) {
- using iterator = typename buffer_context<Char>::iterator;
+void vformat_to(
+ buffer<Char>& buf, basic_string_view<Char> fmt,
+ basic_format_args<FMT_BUFFER_CONTEXT(type_identity_t<Char>)> args,
+ locale_ref loc) {
+ // workaround for msvc bug regarding name-lookup in module
+ // link names into function scope
+ using detail::arg_formatter;
+ using detail::buffer_appender;
+ using detail::custom_formatter;
+ using detail::default_arg_formatter;
+ using detail::get_arg;
+ using detail::locale_ref;
+ using detail::parse_format_specs;
+ using detail::specs_checker;
+ using detail::specs_handler;
+ using detail::to_unsigned;
+ using detail::type;
+ using detail::write;
auto out = buffer_appender<Char>(buf);
- if (format_str.size() == 2 && equal2(format_str.data(), "{}")) {
+ if (fmt.size() == 2 && equal2(fmt.data(), "{}")) {
auto arg = args.get(0);
if (!arg) error_handler().on_error("argument not found");
- visit_format_arg(default_arg_formatter<iterator, Char>{out, args, loc},
- arg);
+ visit_format_arg(default_arg_formatter<Char>{out, args, loc}, arg);
return;
}
- format_handler<iterator, Char, buffer_context<Char>> h(out, format_str, args,
- loc);
- parse_format_string<false>(format_str, h);
-}
-
-#ifndef FMT_HEADER_ONLY
-extern template void detail::vformat_to(detail::buffer<char>&, string_view,
- basic_format_args<format_context>,
- detail::locale_ref);
-namespace detail {
-
-extern template FMT_API std::string grouping_impl<char>(locale_ref loc);
-extern template FMT_API std::string grouping_impl<wchar_t>(locale_ref loc);
-extern template FMT_API char thousands_sep_impl<char>(locale_ref loc);
-extern template FMT_API wchar_t thousands_sep_impl<wchar_t>(locale_ref loc);
-extern template FMT_API char decimal_point_impl(locale_ref loc);
-extern template FMT_API wchar_t decimal_point_impl(locale_ref loc);
-extern template int format_float<double>(double value, int precision,
- float_specs specs, buffer<char>& buf);
-extern template int format_float<long double>(long double value, int precision,
- float_specs specs,
- buffer<char>& buf);
-int snprintf_float(float value, int precision, float_specs specs,
- buffer<char>& buf) = delete;
-extern template int snprintf_float<double>(double value, int precision,
- float_specs specs,
- buffer<char>& buf);
-extern template int snprintf_float<long double>(long double value,
- int precision,
- float_specs specs,
- buffer<char>& buf);
-} // namespace detail
-#endif
-
-template <typename S, typename Char = char_t<S>,
- FMT_ENABLE_IF(detail::is_string<S>::value)>
-inline void vformat_to(
- detail::buffer<Char>& buf, const S& format_str,
- basic_format_args<FMT_BUFFER_CONTEXT(type_identity_t<Char>)> args) {
- return detail::vformat_to(buf, to_string_view(format_str), args);
-}
-template <typename S, typename... Args, size_t SIZE = inline_buffer_size,
- typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>>
-inline typename buffer_context<Char>::iterator format_to(
- basic_memory_buffer<Char, SIZE>& buf, const S& format_str, Args&&... args) {
- const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...);
- detail::vformat_to(buf, to_string_view(format_str), vargs);
- return detail::buffer_appender<Char>(buf);
-}
-
-template <typename OutputIt, typename Char = char>
-using format_context_t = basic_format_context<OutputIt, Char>;
+ struct format_handler : error_handler {
+ basic_format_parse_context<Char> parse_context;
+ buffer_context<Char> context;
-template <typename OutputIt, typename Char = char>
-using format_args_t = basic_format_args<format_context_t<OutputIt, Char>>;
+ format_handler(buffer_appender<Char> out, basic_string_view<Char> str,
+ basic_format_args<buffer_context<Char>> args, locale_ref loc)
+ : parse_context(str), context(out, args, loc) {}
-template <typename OutputIt, typename Char = typename OutputIt::value_type>
-using format_to_n_context FMT_DEPRECATED_ALIAS = buffer_context<Char>;
-
-template <typename OutputIt, typename Char = typename OutputIt::value_type>
-using format_to_n_args FMT_DEPRECATED_ALIAS =
- basic_format_args<buffer_context<Char>>;
+ void on_text(const Char* begin, const Char* end) {
+ auto text = basic_string_view<Char>(begin, to_unsigned(end - begin));
+ context.advance_to(write<Char>(context.out(), text));
+ }
-template <typename OutputIt, typename Char, typename... Args>
-FMT_DEPRECATED format_arg_store<buffer_context<Char>, Args...>
-make_format_to_n_args(const Args&... args) {
- return format_arg_store<buffer_context<Char>, Args...>(args...);
-}
+ FMT_CONSTEXPR auto on_arg_id() -> int {
+ return parse_context.next_arg_id();
+ }
+ FMT_CONSTEXPR auto on_arg_id(int id) -> int {
+ return parse_context.check_arg_id(id), id;
+ }
+ FMT_CONSTEXPR auto on_arg_id(basic_string_view<Char> id) -> int {
+ int arg_id = context.arg_id(id);
+ if (arg_id < 0) on_error("argument not found");
+ return arg_id;
+ }
-template <typename Char, enable_if_t<(!std::is_same<Char, char>::value), int>>
-std::basic_string<Char> detail::vformat(
- basic_string_view<Char> format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args) {
- basic_memory_buffer<Char> buffer;
- detail::vformat_to(buffer, format_str, args);
- return to_string(buffer);
-}
+ FMT_INLINE void on_replacement_field(int id, const Char*) {
+ auto arg = get_arg(context, id);
+ context.advance_to(visit_format_arg(
+ default_arg_formatter<Char>{context.out(), context.args(),
+ context.locale()},
+ arg));
+ }
-template <typename Char, FMT_ENABLE_IF(std::is_same<Char, wchar_t>::value)>
-void vprint(std::FILE* f, basic_string_view<Char> format_str,
- wformat_args args) {
- wmemory_buffer buffer;
- detail::vformat_to(buffer, format_str, args);
- buffer.push_back(L'\0');
- if (std::fputws(buffer.data(), f) == -1)
- FMT_THROW(system_error(errno, "cannot write to file"));
+ auto on_format_specs(int id, const Char* begin, const Char* end)
+ -> const Char* {
+ auto arg = get_arg(context, id);
+ if (arg.type() == type::custom_type) {
+ parse_context.advance_to(parse_context.begin() +
+ (begin - &*parse_context.begin()));
+ visit_format_arg(custom_formatter<Char>{parse_context, context}, arg);
+ return parse_context.begin();
+ }
+ auto specs = basic_format_specs<Char>();
+ specs_checker<specs_handler<Char>> handler(
+ specs_handler<Char>(specs, parse_context, context), arg.type());
+ begin = parse_format_specs(begin, end, handler);
+ if (begin == end || *begin != '}')
+ on_error("missing '}' in format string");
+ auto f = arg_formatter<Char>{context.out(), specs, context.locale()};
+ context.advance_to(visit_format_arg(f, arg));
+ return begin;
+ }
+ };
+ detail::parse_format_string<false>(fmt, format_handler(out, fmt, args, loc));
}
-template <typename Char, FMT_ENABLE_IF(std::is_same<Char, wchar_t>::value)>
-void vprint(basic_string_view<Char> format_str, wformat_args args) {
- vprint(stdout, format_str, args);
-}
+#ifndef FMT_HEADER_ONLY
+extern template FMT_API auto thousands_sep_impl<char>(locale_ref)
+ -> thousands_sep_result<char>;
+extern template FMT_API auto thousands_sep_impl<wchar_t>(locale_ref)
+ -> thousands_sep_result<wchar_t>;
+extern template FMT_API auto decimal_point_impl(locale_ref) -> char;
+extern template FMT_API auto decimal_point_impl(locale_ref) -> wchar_t;
+extern template auto format_float<double>(double value, int precision,
+ float_specs specs, buffer<char>& buf)
+ -> int;
+extern template auto format_float<long double>(long double value, int precision,
+ float_specs specs,
+ buffer<char>& buf) -> int;
+void snprintf_float(float, int, float_specs, buffer<char>&) = delete;
+extern template auto snprintf_float<double>(double value, int precision,
+ float_specs specs,
+ buffer<char>& buf) -> int;
+extern template auto snprintf_float<long double>(long double value,
+ int precision,
+ float_specs specs,
+ buffer<char>& buf) -> int;
+#endif // FMT_HEADER_ONLY
+
+FMT_END_DETAIL_NAMESPACE
#if FMT_USE_USER_DEFINED_LITERALS
-namespace detail {
-
-# if FMT_USE_UDL_TEMPLATE
-template <typename Char, Char... CHARS> class udl_formatter {
- public:
- template <typename... Args>
- std::basic_string<Char> operator()(Args&&... args) const {
- static FMT_CONSTEXPR_DECL Char s[] = {CHARS..., '\0'};
- return format(FMT_STRING(s), std::forward<Args>(args)...);
- }
-};
-# else
-template <typename Char> struct udl_formatter {
- basic_string_view<Char> str;
-
- template <typename... Args>
- std::basic_string<Char> operator()(Args&&... args) const {
- return format(str, std::forward<Args>(args)...);
- }
-};
-# endif // FMT_USE_UDL_TEMPLATE
-
-template <typename Char> struct udl_arg {
- const Char* str;
-
- template <typename T> named_arg<Char, T> operator=(T&& value) const {
- return {str, std::forward<T>(value)};
- }
-};
-} // namespace detail
-
inline namespace literals {
-# if FMT_USE_UDL_TEMPLATE
-# pragma GCC diagnostic push
-# pragma GCC diagnostic ignored "-Wpedantic"
-# if FMT_CLANG_VERSION
-# pragma GCC diagnostic ignored "-Wgnu-string-literal-operator-template"
-# endif
-template <typename Char, Char... CHARS>
-FMT_CONSTEXPR detail::udl_formatter<Char, CHARS...> operator""_format() {
- return {};
-}
-# pragma GCC diagnostic pop
-# else
/**
\rst
- User-defined literal equivalent of :func:`fmt::format`.
+ User-defined literal equivalent of :func:`fmt::arg`.
**Example**::
using namespace fmt::literals;
- std::string message = "The answer is {}"_format(42);
+ fmt::print("Elapsed time: {s:.2f} seconds", "s"_a=1.23);
\endrst
*/
-FMT_CONSTEXPR detail::udl_formatter<char> operator"" _format(const char* s,
- size_t n) {
- return {{s, n}};
+# if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS
+template <detail_exported::fixed_string Str>
+constexpr auto operator""_a()
+ -> detail::udl_arg<remove_cvref_t<decltype(Str.data[0])>,
+ sizeof(Str.data) / sizeof(decltype(Str.data[0])), Str> {
+ return {};
}
-FMT_CONSTEXPR detail::udl_formatter<wchar_t> operator"" _format(
- const wchar_t* s, size_t n) {
- return {{s, n}};
+# else
+constexpr auto operator"" _a(const char* s, size_t) -> detail::udl_arg<char> {
+ return {s};
}
-# endif // FMT_USE_UDL_TEMPLATE
+# endif
/**
\rst
- User-defined literal equivalent of :func:`fmt::arg`.
+ User-defined literal equivalent of :func:`fmt::format`.
**Example**::
using namespace fmt::literals;
- fmt::print("Elapsed time: {s:.2f} seconds", "s"_a=1.23);
+ std::string message = "The answer is {}"_format(42);
\endrst
*/
-FMT_CONSTEXPR detail::udl_arg<char> operator"" _a(const char* s, size_t) {
- return {s};
-}
-FMT_CONSTEXPR detail::udl_arg<wchar_t> operator"" _a(const wchar_t* s, size_t) {
- return {s};
+constexpr auto operator"" _format(const char* s, size_t n)
+ -> detail::udl_formatter<char> {
+ return {{s, n}};
}
} // namespace literals
#endif // FMT_USE_USER_DEFINED_LITERALS
+
+template <typename Locale, FMT_ENABLE_IF(detail::is_locale<Locale>::value)>
+inline auto vformat(const Locale& loc, string_view fmt, format_args args)
+ -> std::string {
+ return detail::vformat(loc, fmt, args);
+}
+
+template <typename Locale, typename... T,
+ FMT_ENABLE_IF(detail::is_locale<Locale>::value)>
+inline auto format(const Locale& loc, format_string<T...> fmt, T&&... args)
+ -> std::string {
+ return vformat(loc, string_view(fmt), fmt::make_format_args(args...));
+}
+
+template <typename... T, size_t SIZE, typename Allocator>
+FMT_DEPRECATED auto format_to(basic_memory_buffer<char, SIZE, Allocator>& buf,
+ format_string<T...> fmt, T&&... args)
+ -> appender {
+ detail::vformat_to(buf, string_view(fmt), fmt::make_format_args(args...));
+ return appender(buf);
+}
+
+template <typename OutputIt, typename Locale,
+ FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value&&
+ detail::is_locale<Locale>::value)>
+auto vformat_to(OutputIt out, const Locale& loc, string_view fmt,
+ format_args args) -> OutputIt {
+ using detail::get_buffer;
+ auto&& buf = get_buffer<char>(out);
+ detail::vformat_to(buf, fmt, args, detail::locale_ref(loc));
+ return detail::get_iterator(buf);
+}
+
+template <typename OutputIt, typename Locale, typename... T,
+ FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value&&
+ detail::is_locale<Locale>::value)>
+FMT_INLINE auto format_to(OutputIt out, const Locale& loc,
+ format_string<T...> fmt, T&&... args) -> OutputIt {
+ return vformat_to(out, loc, fmt, fmt::make_format_args(args...));
+}
+
+FMT_MODULE_EXPORT_END
FMT_END_NAMESPACE
+#ifdef FMT_DEPRECATED_INCLUDE_XCHAR
+# include "xchar.h"
+#endif
+
#ifdef FMT_HEADER_ONLY
# define FMT_FUNC inline
# include "format-inl.h"
-// Formatting library for C++ - std::locale support
-//
-// Copyright (c) 2012 - present, Victor Zverovich
-// All rights reserved.
-//
-// For the license information refer to format.h.
-
-#ifndef FMT_LOCALE_H_
-#define FMT_LOCALE_H_
-
-#include <locale>
-
-#include "format.h"
-
-FMT_BEGIN_NAMESPACE
-
-namespace detail {
-template <typename Char>
-std::basic_string<Char> vformat(
- const std::locale& loc, basic_string_view<Char> format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args) {
- basic_memory_buffer<Char> buffer;
- detail::vformat_to(buffer, format_str, args, detail::locale_ref(loc));
- return fmt::to_string(buffer);
-}
-} // namespace detail
-
-template <typename S, typename Char = char_t<S>>
-inline std::basic_string<Char> vformat(
- const std::locale& loc, const S& format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args) {
- return detail::vformat(loc, to_string_view(format_str), args);
-}
-
-template <typename S, typename... Args, typename Char = char_t<S>>
-inline std::basic_string<Char> format(const std::locale& loc,
- const S& format_str, Args&&... args) {
- return detail::vformat(loc, to_string_view(format_str),
- fmt::make_args_checked<Args...>(format_str, args...));
-}
-
-template <typename S, typename OutputIt, typename... Args,
- typename Char = char_t<S>,
- FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value)>
-inline OutputIt vformat_to(
- OutputIt out, const std::locale& loc, const S& format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args) {
- decltype(detail::get_buffer<Char>(out)) buf(detail::get_buffer_init(out));
- vformat_to(buf, to_string_view(format_str), args, detail::locale_ref(loc));
- return detail::get_iterator(buf);
-}
-
-template <typename OutputIt, typename S, typename... Args,
- bool enable = detail::is_output_iterator<OutputIt, char_t<S>>::value>
-inline auto format_to(OutputIt out, const std::locale& loc,
- const S& format_str, Args&&... args) ->
- typename std::enable_if<enable, OutputIt>::type {
- const auto& vargs = fmt::make_args_checked<Args...>(format_str, args...);
- return vformat_to(out, loc, to_string_view(format_str), vargs);
-}
-
-FMT_END_NAMESPACE
-
-#endif // FMT_LOCALE_H_
+#include "xchar.h"
+#warning fmt/locale.h is deprecated, include fmt/format.h or fmt/xchar.h instead
#ifndef FMT_OS_H_
#define FMT_OS_H_
-#if defined(__MINGW32__) || defined(__CYGWIN__)
-// Workaround MinGW bug https://sourceforge.net/p/mingw/bugs/2024/.
-# undef __STRICT_ANSI__
-#endif
-
#include <cerrno>
-#include <clocale> // for locale_t
+#include <clocale> // locale_t
#include <cstddef>
#include <cstdio>
-#include <cstdlib> // for strtod_l
+#include <cstdlib> // strtod_l
+#include <system_error> // std::system_error
#if defined __APPLE__ || defined(__FreeBSD__)
# include <xlocale.h> // for LC_NUMERIC_MASK on OS X
#define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1)
FMT_BEGIN_NAMESPACE
+FMT_MODULE_EXPORT_BEGIN
/**
\rst
using cstring_view = basic_cstring_view<char>;
using wcstring_view = basic_cstring_view<wchar_t>;
-// An error code.
-class error_code {
- private:
- int value_;
-
- public:
- explicit error_code(int value = 0) FMT_NOEXCEPT : value_(value) {}
+template <typename Char> struct formatter<std::error_code, Char> {
+ template <typename ParseContext>
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+ return ctx.begin();
+ }
- int get() const FMT_NOEXCEPT { return value_; }
+ template <typename FormatContext>
+ FMT_CONSTEXPR auto format(const std::error_code& ec, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ auto out = ctx.out();
+ out = detail::write_bytes(out, ec.category().name(),
+ basic_format_specs<Char>());
+ out = detail::write<Char>(out, Char(':'));
+ out = detail::write<Char>(out, ec.value());
+ return out;
+ }
};
#ifdef _WIN32
-namespace detail {
+FMT_API const std::error_category& system_category() FMT_NOEXCEPT;
+
+FMT_BEGIN_DETAIL_NAMESPACE
// A converter from UTF-16 to UTF-8.
// It is only provided for Windows since other systems support UTF-8 natively.
class utf16_to_utf8 {
public:
utf16_to_utf8() {}
- FMT_API explicit utf16_to_utf8(wstring_view s);
+ FMT_API explicit utf16_to_utf8(basic_string_view<wchar_t> s);
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]; }
// Performs conversion returning a system error code instead of
// throwing exception on conversion error. This method may still throw
// in case of memory allocation error.
- FMT_API int convert(wstring_view s);
+ FMT_API int convert(basic_string_view<wchar_t> s);
};
FMT_API void format_windows_error(buffer<char>& out, int error_code,
- string_view message) FMT_NOEXCEPT;
-} // namespace detail
+ const char* message) FMT_NOEXCEPT;
+FMT_END_DETAIL_NAMESPACE
-/** A Windows error. */
-class windows_error : public system_error {
- private:
- FMT_API void init(int error_code, string_view format_str, format_args args);
+FMT_API std::system_error vwindows_error(int error_code, string_view format_str,
+ format_args args);
- public:
- /**
- \rst
- Constructs a :class:`fmt::windows_error` object with the description
- of the form
-
- .. parsed-literal::
- *<message>*: *<system-message>*
-
- where *<message>* is the formatted message and *<system-message>* is the
- system message corresponding to the error code.
- *error_code* is a Windows error code as given by ``GetLastError``.
- If *error_code* is not a valid error code such as -1, the system message
- will look like "error -1".
-
- **Example**::
-
- // This throws a windows_error with the description
- // cannot open file 'madeup': The system cannot find the file specified.
- // or similar (system message may vary).
- const char *filename = "madeup";
- LPOFSTRUCT of = LPOFSTRUCT();
- HFILE file = OpenFile(filename, &of, OF_READ);
- if (file == HFILE_ERROR) {
- throw fmt::windows_error(GetLastError(),
- "cannot open file '{}'", filename);
- }
- \endrst
- */
- template <typename... Args>
- windows_error(int error_code, string_view message, const Args&... args) {
- init(error_code, message, make_format_args(args...));
- }
-};
+/**
+ \rst
+ Constructs a :class:`std::system_error` object with the description
+ of the form
+
+ .. parsed-literal::
+ *<message>*: *<system-message>*
+
+ where *<message>* is the formatted message and *<system-message>* is the
+ system message corresponding to the error code.
+ *error_code* is a Windows error code as given by ``GetLastError``.
+ If *error_code* is not a valid error code such as -1, the system message
+ will look like "error -1".
+
+ **Example**::
+
+ // This throws a system_error with the description
+ // cannot open file 'madeup': The system cannot find the file specified.
+ // or similar (system message may vary).
+ const char *filename = "madeup";
+ LPOFSTRUCT of = LPOFSTRUCT();
+ HFILE file = OpenFile(filename, &of, OF_READ);
+ if (file == HFILE_ERROR) {
+ throw fmt::windows_error(GetLastError(),
+ "cannot open file '{}'", filename);
+ }
+ \endrst
+*/
+template <typename... Args>
+std::system_error windows_error(int error_code, string_view message,
+ const Args&... args) {
+ return vwindows_error(error_code, message, fmt::make_format_args(args...));
+}
// Reports a Windows error without throwing an exception.
// Can be used to report errors from destructors.
FMT_API void report_windows_error(int error_code,
- string_view message) FMT_NOEXCEPT;
+ const char* message) FMT_NOEXCEPT;
+#else
+inline const std::error_category& system_category() FMT_NOEXCEPT {
+ return std::system_category();
+}
#endif // _WIN32
+// std::system is not available on some platforms such as iOS (#2248).
+#ifdef __OSX__
+template <typename S, typename... Args, typename Char = char_t<S>>
+void say(const S& format_str, Args&&... args) {
+ std::system(format("say \"{}\"", format(format_str, args...)).c_str());
+}
+#endif
+
// A buffered file.
class buffered_file {
private:
template <typename... Args>
inline void print(string_view format_str, const Args&... args) {
- vprint(format_str, make_format_args(args...));
+ vprint(format_str, fmt::make_format_args(args...));
}
};
WRONLY = FMT_POSIX(O_WRONLY), // Open for writing only.
RDWR = FMT_POSIX(O_RDWR), // Open for reading and writing.
CREATE = FMT_POSIX(O_CREAT), // Create if the file doesn't exist.
- APPEND = FMT_POSIX(O_APPEND) // Open in append mode.
+ APPEND = FMT_POSIX(O_APPEND), // Open in append mode.
+ TRUNC = FMT_POSIX(O_TRUNC) // Truncate the content of the file.
};
// Constructs a file object which doesn't represent any file.
file(file&& other) FMT_NOEXCEPT : fd_(other.fd_) { other.fd_ = -1; }
- file& operator=(file&& other) FMT_NOEXCEPT {
+ // Move assignment is not noexcept because close may throw.
+ file& operator=(file&& other) {
close();
fd_ = other.fd_;
other.fd_ = -1;
// Makes fd be the copy of this file descriptor, closing fd first if
// necessary.
- FMT_API void dup2(int fd, error_code& ec) FMT_NOEXCEPT;
+ FMT_API void dup2(int fd, std::error_code& ec) FMT_NOEXCEPT;
// Creates a pipe setting up read_end and write_end file objects for reading
// and writing respectively.
// Returns the memory page size.
long getpagesize();
-namespace detail {
+FMT_BEGIN_DETAIL_NAMESPACE
struct buffer_size {
+ buffer_size() = default;
size_t value = 0;
buffer_size operator=(size_t val) const {
auto bs = buffer_size();
};
struct ostream_params {
- int oflag = file::WRONLY | file::CREATE;
+ int oflag = file::WRONLY | file::CREATE | file::TRUNC;
size_t buffer_size = BUFSIZ > 32768 ? BUFSIZ : 32768;
ostream_params() {}
template <typename... T>
- ostream_params(T... params, int oflag) : ostream_params(params...) {
- this->oflag = oflag;
+ ostream_params(T... params, int new_oflag) : ostream_params(params...) {
+ oflag = new_oflag;
}
template <typename... T>
this->buffer_size = bs.value;
}
};
-} // namespace detail
-static constexpr detail::buffer_size buffer_size;
+FMT_END_DETAIL_NAMESPACE
+
+constexpr detail::buffer_size buffer_size;
-// A fast output stream which is not thread-safe.
-class ostream final : private detail::buffer<char> {
+/** A fast output stream which is not thread-safe. */
+class FMT_API ostream final : private detail::buffer<char> {
private:
file file_;
clear();
}
- FMT_API void grow(size_t) override final;
+ void grow(size_t) override;
ostream(cstring_view path, const detail::ostream_params& params)
: file_(path, params.oflag) {
ostream(ostream&& other)
: detail::buffer<char>(other.data(), other.size(), other.capacity()),
file_(std::move(other.file_)) {
+ other.clear();
other.set(nullptr, 0);
}
~ostream() {
file_.close();
}
- template <typename S, typename... Args>
- void print(const S& format_str, const Args&... args) {
- format_to(detail::buffer_appender<char>(*this), format_str, args...);
+ /**
+ Formats ``args`` according to specifications in ``fmt`` and writes the
+ output to the file.
+ */
+ template <typename... T> void print(format_string<T...> fmt, T&&... args) {
+ vformat_to(detail::buffer_appender<char>(*this), fmt,
+ fmt::make_format_args(args...));
}
};
/**
- Opens a file for writing. Supported parameters passed in `params`:
- * ``<integer>``: Output flags (``file::WRONLY | file::CREATE`` by default)
+ \rst
+ Opens a file for writing. Supported parameters passed in *params*:
+
+ * ``<integer>``: Flags passed to `open
+ <https://pubs.opengroup.org/onlinepubs/007904875/functions/open.html>`_
+ (``file::WRONLY | file::CREATE`` by default)
* ``buffer_size=<integer>``: Output buffer size
+
+ **Example**::
+
+ auto out = fmt::output_file("guide.txt");
+ out.print("Don't {}", "Panic");
+ \endrst
*/
template <typename... T>
inline ostream output_file(cstring_view path, T... params) {
};
using Locale FMT_DEPRECATED_ALIAS = locale;
#endif // FMT_LOCALE
+FMT_MODULE_EXPORT_END
FMT_END_NAMESPACE
#endif // FMT_OS_H_
using result = decltype(test<T>(0));
public:
+ is_streamable() = default;
+
static const bool value = result::value;
};
};
} // namespace detail
+FMT_MODULE_EXPORT
template <typename Char>
void vprint(std::basic_ostream<Char>& os, basic_string_view<Char> format_str,
basic_format_args<buffer_context<type_identity_t<Char>>> args) {
fmt::print(cerr, "Don't {}!", "panic");
\endrst
*/
+FMT_MODULE_EXPORT
template <typename S, typename... Args,
typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>>
void print(std::basic_ostream<Char>& os, const S& format_str, Args&&... args) {
#include <algorithm> // std::max
#include <limits> // std::numeric_limits
+#include <ostream>
-#include "ostream.h"
+#include "format.h"
FMT_BEGIN_NAMESPACE
-namespace detail {
+FMT_MODULE_EXPORT_BEGIN
+
+template <typename T> struct printf_formatter { printf_formatter() = delete; };
+
+template <typename Char>
+class basic_printf_parse_context : public basic_format_parse_context<Char> {
+ using basic_format_parse_context<Char>::basic_format_parse_context;
+};
+
+template <typename OutputIt, typename Char> class basic_printf_context {
+ private:
+ OutputIt out_;
+ basic_format_args<basic_printf_context> args_;
+
+ public:
+ using char_type = Char;
+ using format_arg = basic_format_arg<basic_printf_context>;
+ using parse_context_type = basic_printf_parse_context<Char>;
+ template <typename T> using formatter_type = printf_formatter<T>;
+
+ /**
+ \rst
+ Constructs a ``printf_context`` object. References to the arguments are
+ stored in the context object so make sure they have appropriate lifetimes.
+ \endrst
+ */
+ basic_printf_context(OutputIt out,
+ basic_format_args<basic_printf_context> args)
+ : out_(out), args_(args) {}
+
+ OutputIt out() { return out_; }
+ void advance_to(OutputIt it) { out_ = it; }
+
+ detail::locale_ref locale() { return {}; }
+
+ format_arg arg(int id) const { return args_.get(id); }
+
+ FMT_CONSTEXPR void on_error(const char* message) {
+ detail::error_handler().on_error(message);
+ }
+};
+
+FMT_BEGIN_DETAIL_NAMESPACE
// Checks if a value fits in int - used to avoid warnings about comparing
// signed and unsigned integers.
}
};
-template <typename Char, typename Context>
-void vprintf(buffer<Char>& buf, basic_string_view<Char> format,
- basic_format_args<Context> args) {
- Context(buffer_appender<Char>(buf), format, args).format();
-}
-} // namespace detail
-
-// For printing into memory_buffer.
-template <typename Char, typename Context>
-FMT_DEPRECATED void printf(detail::buffer<Char>& buf,
- basic_string_view<Char> format,
- basic_format_args<Context> args) {
- return detail::vprintf(buf, format, args);
-}
-using detail::vprintf;
-
-template <typename Char>
-class basic_printf_parse_context : public basic_format_parse_context<Char> {
- using basic_format_parse_context<Char>::basic_format_parse_context;
-};
-template <typename OutputIt, typename Char> class basic_printf_context;
-
-/**
- \rst
- The ``printf`` argument formatter.
- \endrst
- */
+// The ``printf`` argument formatter.
template <typename OutputIt, typename Char>
-class printf_arg_formatter : public detail::arg_formatter_base<OutputIt, Char> {
- public:
- using iterator = OutputIt;
-
+class printf_arg_formatter : public arg_formatter<Char> {
private:
- using char_type = Char;
- using base = detail::arg_formatter_base<OutputIt, Char>;
+ using base = arg_formatter<Char>;
using context_type = basic_printf_context<OutputIt, Char>;
+ using format_specs = basic_format_specs<Char>;
context_type& context_;
- void write_null_pointer(char) {
- this->specs()->type = 0;
- this->write("(nil)");
- }
-
- void write_null_pointer(wchar_t) {
- this->specs()->type = 0;
- this->write(L"(nil)");
+ OutputIt write_null_pointer(bool is_string = false) {
+ auto s = this->specs;
+ s.type = 0;
+ return write_bytes(this->out, is_string ? "(null)" : "(nil)", s);
}
public:
- using format_specs = typename base::format_specs;
+ printf_arg_formatter(OutputIt iter, format_specs& s, context_type& ctx)
+ : base{iter, s, locale_ref()}, context_(ctx) {}
- /**
- \rst
- Constructs an argument formatter object.
- *buffer* is a reference to the output buffer and *specs* contains format
- specifier information for standard argument types.
- \endrst
- */
- printf_arg_formatter(iterator iter, format_specs& specs, context_type& ctx)
- : base(iter, &specs, detail::locale_ref()), context_(ctx) {}
-
- template <typename T, FMT_ENABLE_IF(fmt::detail::is_integral<T>::value)>
- iterator operator()(T value) {
- // MSVC2013 fails to compile separate overloads for bool and char_type so
- // use std::is_same instead.
- if (std::is_same<T, bool>::value) {
- format_specs& fmt_specs = *this->specs();
- if (fmt_specs.type != 's') return base::operator()(value ? 1 : 0);
- fmt_specs.type = 0;
- this->write(value != 0);
- } else if (std::is_same<T, char_type>::value) {
- format_specs& fmt_specs = *this->specs();
+ OutputIt operator()(monostate value) { return base::operator()(value); }
+
+ template <typename T, FMT_ENABLE_IF(detail::is_integral<T>::value)>
+ OutputIt operator()(T value) {
+ // MSVC2013 fails to compile separate overloads for bool and Char so use
+ // std::is_same instead.
+ if (std::is_same<T, Char>::value) {
+ format_specs fmt_specs = this->specs;
if (fmt_specs.type && fmt_specs.type != 'c')
return (*this)(static_cast<int>(value));
fmt_specs.sign = sign::none;
// ignored for non-numeric types
if (fmt_specs.align == align::none || fmt_specs.align == align::numeric)
fmt_specs.align = align::right;
- return base::operator()(value);
- } else {
- return base::operator()(value);
+ return write<Char>(this->out, static_cast<Char>(value), fmt_specs);
}
- return this->out();
+ return base::operator()(value);
}
template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
- iterator operator()(T value) {
+ OutputIt operator()(T value) {
return base::operator()(value);
}
/** Formats a null-terminated C string. */
- iterator operator()(const char* value) {
- if (value)
- base::operator()(value);
- else if (this->specs()->type == 'p')
- write_null_pointer(char_type());
- else
- this->write("(null)");
- return this->out();
+ OutputIt operator()(const char* value) {
+ if (value) return base::operator()(value);
+ return write_null_pointer(this->specs.type != 'p');
}
/** Formats a null-terminated wide C string. */
- iterator operator()(const wchar_t* value) {
- if (value)
- base::operator()(value);
- else if (this->specs()->type == 'p')
- write_null_pointer(char_type());
- else
- this->write(L"(null)");
- return this->out();
+ OutputIt operator()(const wchar_t* value) {
+ if (value) return base::operator()(value);
+ return write_null_pointer(this->specs.type != 'p');
}
- iterator operator()(basic_string_view<char_type> value) {
+ OutputIt operator()(basic_string_view<Char> value) {
return base::operator()(value);
}
- iterator operator()(monostate value) { return base::operator()(value); }
-
/** Formats a pointer. */
- iterator operator()(const void* value) {
- if (value) return base::operator()(value);
- this->specs()->type = 0;
- write_null_pointer(char_type());
- return this->out();
+ OutputIt operator()(const void* value) {
+ return value ? base::operator()(value) : write_null_pointer();
}
/** Formats an argument of a custom (user-defined) type. */
- iterator operator()(typename basic_format_arg<context_type>::handle handle) {
- handle.format(context_.parse_context(), context_);
- return this->out();
+ OutputIt operator()(typename basic_format_arg<context_type>::handle handle) {
+ auto parse_ctx =
+ basic_printf_parse_context<Char>(basic_string_view<Char>());
+ handle.format(parse_ctx, context_);
+ return this->out;
}
};
-template <typename T> struct printf_formatter {
- printf_formatter() = delete;
-
- template <typename ParseContext>
- auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
- return ctx.begin();
- }
-
- template <typename FormatContext>
- auto format(const T& value, FormatContext& ctx) -> decltype(ctx.out()) {
- detail::format_value(detail::get_container(ctx.out()), value);
- return ctx.out();
- }
-};
-
-/**
- This template formats data and writes the output through an output iterator.
- */
-template <typename OutputIt, typename Char> class basic_printf_context {
- public:
- /** The character type for the output. */
- using char_type = Char;
- using iterator = OutputIt;
- using format_arg = basic_format_arg<basic_printf_context>;
- using parse_context_type = basic_printf_parse_context<Char>;
- template <typename T> using formatter_type = printf_formatter<T>;
-
- private:
- using format_specs = basic_format_specs<char_type>;
-
- OutputIt out_;
- basic_format_args<basic_printf_context> args_;
- parse_context_type parse_ctx_;
-
- static void parse_flags(format_specs& specs, const Char*& it,
- const Char* end);
-
- // Returns the argument with specified index or, if arg_index is -1, the next
- // argument.
- format_arg get_arg(int arg_index = -1);
-
- // Parses argument index, flags and width and returns the argument index.
- int parse_header(const Char*& it, const Char* end, format_specs& specs);
-
- public:
- /**
- \rst
- Constructs a ``printf_context`` object. References to the arguments are
- stored in the context object so make sure they have appropriate lifetimes.
- \endrst
- */
- basic_printf_context(OutputIt out, basic_string_view<char_type> format_str,
- basic_format_args<basic_printf_context> args)
- : out_(out), args_(args), parse_ctx_(format_str) {}
-
- OutputIt out() { return out_; }
- void advance_to(OutputIt it) { out_ = it; }
-
- detail::locale_ref locale() { return {}; }
-
- format_arg arg(int id) const { return args_.get(id); }
-
- parse_context_type& parse_context() { return parse_ctx_; }
-
- FMT_CONSTEXPR void on_error(const char* message) {
- parse_ctx_.on_error(message);
- }
-
- /** Formats stored arguments and writes the output to the range. */
- template <typename ArgFormatter = printf_arg_formatter<OutputIt, Char>>
- OutputIt format();
-};
-
-template <typename OutputIt, typename Char>
-void basic_printf_context<OutputIt, Char>::parse_flags(format_specs& specs,
- const Char*& it,
- const Char* end) {
+template <typename Char>
+void parse_flags(basic_format_specs<Char>& specs, const Char*& it,
+ const Char* end) {
for (; it != end; ++it) {
switch (*it) {
case '-':
}
}
-template <typename OutputIt, typename Char>
-typename basic_printf_context<OutputIt, Char>::format_arg
-basic_printf_context<OutputIt, Char>::get_arg(int arg_index) {
- if (arg_index < 0)
- arg_index = parse_ctx_.next_arg_id();
- else
- parse_ctx_.check_arg_id(--arg_index);
- return detail::get_arg(*this, arg_index);
-}
-
-template <typename OutputIt, typename Char>
-int basic_printf_context<OutputIt, Char>::parse_header(const Char*& it,
- const Char* end,
- format_specs& specs) {
+template <typename Char, typename GetArg>
+int parse_header(const Char*& it, const Char* end,
+ basic_format_specs<Char>& specs, GetArg get_arg) {
int arg_index = -1;
- char_type c = *it;
+ Char c = *it;
if (c >= '0' && c <= '9') {
// Parse an argument index (if followed by '$') or a width possibly
// preceded with '0' flag(s).
- detail::error_handler eh;
- int value = parse_nonnegative_int(it, end, eh);
+ int value = parse_nonnegative_int(it, end, -1);
if (it != end && *it == '$') { // value is an argument index
++it;
- arg_index = value;
+ arg_index = value != -1 ? value : max_value<int>();
} else {
if (c == '0') specs.fill[0] = '0';
if (value != 0) {
// Nonzero value means that we parsed width and don't need to
// parse it or flags again, so return now.
+ if (value == -1) FMT_THROW(format_error("number is too big"));
specs.width = value;
return arg_index;
}
// Parse width.
if (it != end) {
if (*it >= '0' && *it <= '9') {
- detail::error_handler eh;
- specs.width = parse_nonnegative_int(it, end, eh);
+ specs.width = parse_nonnegative_int(it, end, -1);
+ if (specs.width == -1) FMT_THROW(format_error("number is too big"));
} else if (*it == '*') {
++it;
specs.width = static_cast<int>(visit_format_arg(
- detail::printf_width_handler<char_type>(specs), get_arg()));
+ detail::printf_width_handler<Char>(specs), get_arg(-1)));
}
}
return arg_index;
}
-template <typename OutputIt, typename Char>
-template <typename ArgFormatter>
-OutputIt basic_printf_context<OutputIt, Char>::format() {
- auto out = this->out();
- const Char* start = parse_ctx_.begin();
- const Char* end = parse_ctx_.end();
+template <typename Char, typename Context>
+void vprintf(buffer<Char>& buf, basic_string_view<Char> format,
+ basic_format_args<Context> args) {
+ using OutputIt = buffer_appender<Char>;
+ auto out = OutputIt(buf);
+ auto context = basic_printf_context<OutputIt, Char>(out, args);
+ auto parse_ctx = basic_printf_parse_context<Char>(format);
+
+ // Returns the argument with specified index or, if arg_index is -1, the next
+ // argument.
+ auto get_arg = [&](int arg_index) {
+ if (arg_index < 0)
+ arg_index = parse_ctx.next_arg_id();
+ else
+ parse_ctx.check_arg_id(--arg_index);
+ return detail::get_arg(context, arg_index);
+ };
+
+ const Char* start = parse_ctx.begin();
+ const Char* end = parse_ctx.end();
auto it = start;
while (it != end) {
- char_type c = *it++;
- if (c != '%') continue;
+ if (!detail::find<false, Char>(it, end, '%', it)) {
+ it = end; // detail::find leaves it == nullptr if it doesn't find '%'
+ break;
+ }
+ Char c = *it++;
if (it != end && *it == c) {
- out = std::copy(start, it, out);
+ out = detail::write(
+ out, basic_string_view<Char>(start, detail::to_unsigned(it - start)));
start = ++it;
continue;
}
- out = std::copy(start, it - 1, out);
+ out = detail::write(out, basic_string_view<Char>(
+ start, detail::to_unsigned(it - 1 - start)));
- format_specs specs;
+ basic_format_specs<Char> specs;
specs.align = align::right;
// Parse argument index, flags and width.
- int arg_index = parse_header(it, end, specs);
- if (arg_index == 0) on_error("argument not found");
+ int arg_index = parse_header(it, end, specs, get_arg);
+ if (arg_index == 0) parse_ctx.on_error("argument not found");
// Parse precision.
if (it != end && *it == '.') {
++it;
c = it != end ? *it : 0;
if ('0' <= c && c <= '9') {
- detail::error_handler eh;
- specs.precision = parse_nonnegative_int(it, end, eh);
+ specs.precision = parse_nonnegative_int(it, end, 0);
} else if (c == '*') {
++it;
specs.precision = static_cast<int>(
- visit_format_arg(detail::printf_precision_handler(), get_arg()));
+ visit_format_arg(detail::printf_precision_handler(), get_arg(-1)));
} else {
specs.precision = 0;
}
}
- format_arg arg = get_arg(arg_index);
+ auto arg = get_arg(arg_index);
// For d, i, o, u, x, and X conversion specifiers, if a precision is
// specified, the '0' flag is ignored
if (specs.precision >= 0 && arg.is_integral())
auto str = visit_format_arg(detail::get_cstring<Char>(), arg);
auto str_end = str + specs.precision;
auto nul = std::find(str, str_end, Char());
- arg = detail::make_arg<basic_printf_context>(basic_string_view<Char>(
- str,
- detail::to_unsigned(nul != str_end ? nul - str : specs.precision)));
+ arg = detail::make_arg<basic_printf_context<OutputIt, Char>>(
+ basic_string_view<Char>(
+ str, detail::to_unsigned(nul != str_end ? nul - str
+ : specs.precision)));
}
if (specs.alt && visit_format_arg(detail::is_zero_int(), arg))
specs.alt = false;
// Parse length and convert the argument to the required type.
c = it != end ? *it++ : 0;
- char_type t = it != end ? *it : 0;
+ Char t = it != end ? *it : 0;
using detail::convert_arg;
switch (c) {
case 'h':
specs.type = 'd';
break;
case 'c':
- visit_format_arg(detail::char_converter<basic_printf_context>(arg),
- arg);
+ visit_format_arg(
+ detail::char_converter<basic_printf_context<OutputIt, Char>>(arg),
+ arg);
break;
}
}
start = it;
// Format argument.
- out = visit_format_arg(ArgFormatter(out, specs, *this), arg);
+ out = visit_format_arg(
+ detail::printf_arg_formatter<OutputIt, Char>(out, specs, context), arg);
}
- return std::copy(start, it, out);
+ detail::write(out, basic_string_view<Char>(start, to_unsigned(it - start)));
}
+FMT_END_DETAIL_NAMESPACE
template <typename Char>
using basic_printf_context_t =
arguments and can be implicitly converted to `~fmt::printf_args`.
\endrst
*/
-template <typename... Args>
-inline format_arg_store<printf_context, Args...> make_printf_args(
- const Args&... args) {
+template <typename... T>
+inline auto make_printf_args(const T&... args)
+ -> format_arg_store<printf_context, T...> {
return {args...};
}
arguments and can be implicitly converted to `~fmt::wprintf_args`.
\endrst
*/
-template <typename... Args>
-inline format_arg_store<wprintf_context, Args...> make_wprintf_args(
- const Args&... args) {
+template <typename... T>
+inline auto make_wprintf_args(const T&... args)
+ -> format_arg_store<wprintf_context, T...> {
return {args...};
}
template <typename S, typename Char = char_t<S>>
-inline std::basic_string<Char> vsprintf(
- const S& format,
- basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) {
+inline auto vsprintf(
+ const S& fmt,
+ basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args)
+ -> std::basic_string<Char> {
basic_memory_buffer<Char> buffer;
- vprintf(buffer, to_string_view(format), args);
+ vprintf(buffer, to_string_view(fmt), args);
return to_string(buffer);
}
std::string message = fmt::sprintf("The answer is %d", 42);
\endrst
*/
-template <typename S, typename... Args,
+template <typename S, typename... T,
typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>>
-inline std::basic_string<Char> sprintf(const S& format, const Args&... args) {
+inline auto sprintf(const S& fmt, const T&... args) -> std::basic_string<Char> {
using context = basic_printf_context_t<Char>;
- return vsprintf(to_string_view(format), make_format_args<context>(args...));
+ return vsprintf(to_string_view(fmt), fmt::make_format_args<context>(args...));
}
template <typename S, typename Char = char_t<S>>
-inline int vfprintf(
- std::FILE* f, const S& format,
- basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) {
+inline auto vfprintf(
+ std::FILE* f, const S& fmt,
+ basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args)
+ -> int {
basic_memory_buffer<Char> buffer;
- vprintf(buffer, to_string_view(format), args);
+ vprintf(buffer, to_string_view(fmt), args);
size_t size = buffer.size();
return std::fwrite(buffer.data(), sizeof(Char), size, f) < size
? -1
fmt::fprintf(stderr, "Don't %s!", "panic");
\endrst
*/
-template <typename S, typename... Args,
- typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>>
-inline int fprintf(std::FILE* f, const S& format, const Args&... args) {
+template <typename S, typename... T, typename Char = char_t<S>>
+inline auto fprintf(std::FILE* f, const S& fmt, const T&... args) -> int {
using context = basic_printf_context_t<Char>;
- return vfprintf(f, to_string_view(format),
- make_format_args<context>(args...));
+ return vfprintf(f, to_string_view(fmt),
+ fmt::make_format_args<context>(args...));
}
template <typename S, typename Char = char_t<S>>
-inline int vprintf(
- const S& format,
- basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) {
- return vfprintf(stdout, to_string_view(format), args);
+inline auto vprintf(
+ const S& fmt,
+ basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args)
+ -> int {
+ return vfprintf(stdout, to_string_view(fmt), args);
}
/**
fmt::printf("Elapsed time: %.2f seconds", 1.23);
\endrst
*/
-template <typename S, typename... Args,
- FMT_ENABLE_IF(detail::is_string<S>::value)>
-inline int printf(const S& format_str, const Args&... args) {
- using context = basic_printf_context_t<char_t<S>>;
- return vprintf(to_string_view(format_str),
- make_format_args<context>(args...));
+template <typename S, typename... T, FMT_ENABLE_IF(detail::is_string<S>::value)>
+inline auto printf(const S& fmt, const T&... args) -> int {
+ return vprintf(
+ to_string_view(fmt),
+ fmt::make_format_args<basic_printf_context_t<char_t<S>>>(args...));
}
template <typename S, typename Char = char_t<S>>
-inline int vfprintf(
- std::basic_ostream<Char>& os, const S& format,
- basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) {
+FMT_DEPRECATED auto vfprintf(
+ std::basic_ostream<Char>& os, const S& fmt,
+ basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args)
+ -> int {
basic_memory_buffer<Char> buffer;
- vprintf(buffer, to_string_view(format), args);
- detail::write_buffer(os, buffer);
+ vprintf(buffer, to_string_view(fmt), args);
+ os.write(buffer.data(), static_cast<std::streamsize>(buffer.size()));
return static_cast<int>(buffer.size());
}
-
-/** Formats arguments and writes the output to the range. */
-template <typename ArgFormatter, typename Char,
- typename Context =
- basic_printf_context<typename ArgFormatter::iterator, Char>>
-typename ArgFormatter::iterator vprintf(
- detail::buffer<Char>& out, basic_string_view<Char> format_str,
- basic_format_args<type_identity_t<Context>> args) {
- typename ArgFormatter::iterator iter(out);
- Context(iter, format_str, args).template format<ArgFormatter>();
- return iter;
+template <typename S, typename... T, typename Char = char_t<S>>
+FMT_DEPRECATED auto fprintf(std::basic_ostream<Char>& os, const S& fmt,
+ const T&... args) -> int {
+ return vfprintf(os, to_string_view(fmt),
+ fmt::make_format_args<basic_printf_context_t<Char>>(args...));
}
-/**
- \rst
- Prints formatted data to the stream *os*.
-
- **Example**::
-
- fmt::fprintf(cerr, "Don't %s!", "panic");
- \endrst
- */
-template <typename S, typename... Args, typename Char = char_t<S>>
-inline int fprintf(std::basic_ostream<Char>& os, const S& format_str,
- const Args&... args) {
- using context = basic_printf_context_t<Char>;
- return vfprintf(os, to_string_view(format_str),
- make_format_args<context>(args...));
-}
+FMT_MODULE_EXPORT_END
FMT_END_NAMESPACE
#endif // FMT_PRINTF_H_
#include "format.h"
-// output only up to N items from the range.
-#ifndef FMT_RANGE_OUTPUT_LENGTH_LIMIT
-# define FMT_RANGE_OUTPUT_LENGTH_LIMIT 256
-#endif
-
FMT_BEGIN_NAMESPACE
-template <typename Char> struct formatting_base {
+template <typename Char, typename Enable = void> struct formatting_range {
+#ifdef FMT_DEPRECATED_BRACED_RANGES
+ Char prefix = '{';
+ Char postfix = '}';
+#else
+ Char prefix = '[';
+ Char postfix = ']';
+#endif
+
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
return ctx.begin();
}
};
-template <typename Char, typename Enable = void>
-struct formatting_range : formatting_base<Char> {
- static FMT_CONSTEXPR_DECL const size_t range_length_limit =
- FMT_RANGE_OUTPUT_LENGTH_LIMIT; // output only up to N items from the
- // range.
- Char prefix;
- Char delimiter;
- Char postfix;
- formatting_range() : prefix('{'), delimiter(','), postfix('}') {}
- static FMT_CONSTEXPR_DECL const bool add_delimiter_spaces = true;
- static FMT_CONSTEXPR_DECL const bool add_prepostfix_space = false;
-};
+template <typename Char, typename Enable = void> struct formatting_tuple {
+ Char prefix = '(';
+ Char postfix = ')';
-template <typename Char, typename Enable = void>
-struct formatting_tuple : formatting_base<Char> {
- Char prefix;
- Char delimiter;
- Char postfix;
- formatting_tuple() : prefix('('), delimiter(','), postfix(')') {}
- static FMT_CONSTEXPR_DECL const bool add_delimiter_spaces = true;
- static FMT_CONSTEXPR_DECL const bool add_prepostfix_space = false;
+ template <typename ParseContext>
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+ return ctx.begin();
+ }
};
namespace detail {
return out;
}
+template <typename OutputIterator>
+OutputIterator copy(wchar_t ch, OutputIterator out) {
+ *out++ = ch;
+ return out;
+}
+
/// Return true value if T has std::string interface, like std::string_view.
-template <typename T> class is_like_std_string {
+template <typename T> class is_std_string_like {
template <typename U>
static auto check(U* p)
-> decltype((void)p->find('a'), p->length(), (void)p->data(), int());
};
template <typename Char>
-struct is_like_std_string<fmt::basic_string_view<Char>> : std::true_type {};
+struct is_std_string_like<fmt::basic_string_view<Char>> : std::true_type {};
template <typename... Ts> struct conditional_helper {};
template <typename T, typename _ = void> struct is_range_ : std::false_type {};
#if !FMT_MSC_VER || FMT_MSC_VER > 1800
+
+# define FMT_DECLTYPE_RETURN(val) \
+ ->decltype(val) { return val; } \
+ static_assert( \
+ true, "") // This makes it so that a semicolon is required after the
+ // macro, which helps clang-format handle the formatting.
+
+// C array overload
+template <typename T, std::size_t N>
+auto range_begin(const T (&arr)[N]) -> const T* {
+ return arr;
+}
+template <typename T, std::size_t N>
+auto range_end(const T (&arr)[N]) -> const T* {
+ return arr + N;
+}
+
+template <typename T, typename Enable = void>
+struct has_member_fn_begin_end_t : std::false_type {};
+
+template <typename T>
+struct has_member_fn_begin_end_t<T, void_t<decltype(std::declval<T>().begin()),
+ decltype(std::declval<T>().end())>>
+ : std::true_type {};
+
+// Member function overload
+template <typename T>
+auto range_begin(T&& rng) FMT_DECLTYPE_RETURN(static_cast<T&&>(rng).begin());
+template <typename T>
+auto range_end(T&& rng) FMT_DECLTYPE_RETURN(static_cast<T&&>(rng).end());
+
+// ADL overload. Only participates in overload resolution if member functions
+// are not found.
+template <typename T>
+auto range_begin(T&& rng)
+ -> enable_if_t<!has_member_fn_begin_end_t<T&&>::value,
+ decltype(begin(static_cast<T&&>(rng)))> {
+ return begin(static_cast<T&&>(rng));
+}
+template <typename T>
+auto range_end(T&& rng) -> enable_if_t<!has_member_fn_begin_end_t<T&&>::value,
+ decltype(end(static_cast<T&&>(rng)))> {
+ return end(static_cast<T&&>(rng));
+}
+
+template <typename T, typename Enable = void>
+struct has_const_begin_end : std::false_type {};
+template <typename T, typename Enable = void>
+struct has_mutable_begin_end : std::false_type {};
+
template <typename T>
-struct is_range_<
- T, conditional_t<false,
- conditional_helper<decltype(std::declval<T>().begin()),
- decltype(std::declval<T>().end())>,
- void>> : std::true_type {};
+struct has_const_begin_end<
+ T, void_t<decltype(detail::range_begin(
+ std::declval<const remove_cvref_t<T>&>())),
+ decltype(detail::range_begin(
+ std::declval<const remove_cvref_t<T>&>()))>>
+ : std::true_type {};
+
+template <typename T>
+struct has_mutable_begin_end<
+ T, void_t<decltype(detail::range_begin(std::declval<T>())),
+ decltype(detail::range_begin(std::declval<T>())),
+ enable_if_t<std::is_copy_constructible<T>::value>>>
+ : std::true_type {};
+
+template <typename T>
+struct is_range_<T, void>
+ : std::integral_constant<bool, (has_const_begin_end<T>::value ||
+ has_mutable_begin_end<T>::value)> {};
+
+template <typename T, typename Enable = void> struct range_to_view;
+template <typename T>
+struct range_to_view<T, enable_if_t<has_const_begin_end<T>::value>> {
+ struct view_t {
+ const T* m_range_ptr;
+
+ auto begin() const FMT_DECLTYPE_RETURN(detail::range_begin(*m_range_ptr));
+ auto end() const FMT_DECLTYPE_RETURN(detail::range_end(*m_range_ptr));
+ };
+ static auto view(const T& range) -> view_t { return {&range}; }
+};
+
+template <typename T>
+struct range_to_view<T, enable_if_t<!has_const_begin_end<T>::value &&
+ has_mutable_begin_end<T>::value>> {
+ struct view_t {
+ T m_range_copy;
+
+ auto begin() FMT_DECLTYPE_RETURN(detail::range_begin(m_range_copy));
+ auto end() FMT_DECLTYPE_RETURN(detail::range_end(m_range_copy));
+ };
+ static auto view(const T& range) -> view_t { return {range}; }
+};
+# undef FMT_DECLTYPE_RETURN
#endif
/// tuple_size and tuple_element check.
}
template <typename Range>
-using value_type = remove_cvref_t<decltype(*std::declval<Range>().begin())>;
+using value_type =
+ remove_cvref_t<decltype(*detail::range_begin(std::declval<Range>()))>;
-template <typename Arg, FMT_ENABLE_IF(!is_like_std_string<
- typename std::decay<Arg>::type>::value)>
-FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const Arg&) {
- return add_space ? " {}" : "{}";
+template <typename OutputIt> OutputIt write_delimiter(OutputIt out) {
+ *out++ = ',';
+ *out++ = ' ';
+ return out;
}
-template <typename Arg, FMT_ENABLE_IF(is_like_std_string<
- typename std::decay<Arg>::type>::value)>
-FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const Arg&) {
- return add_space ? " \"{}\"" : "\"{}\"";
+template <
+ typename Char, typename OutputIt, typename Arg,
+ FMT_ENABLE_IF(is_std_string_like<typename std::decay<Arg>::type>::value)>
+OutputIt write_range_entry(OutputIt out, const Arg& v) {
+ *out++ = '"';
+ out = write<Char>(out, v);
+ *out++ = '"';
+ return out;
}
-FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const char*) {
- return add_space ? " \"{}\"" : "\"{}\"";
-}
-FMT_CONSTEXPR const wchar_t* format_str_quoted(bool add_space, const wchar_t*) {
- return add_space ? L" \"{}\"" : L"\"{}\"";
+template <typename Char, typename OutputIt, typename Arg,
+ FMT_ENABLE_IF(std::is_same<Arg, Char>::value)>
+OutputIt write_range_entry(OutputIt out, const Arg v) {
+ *out++ = '\'';
+ *out++ = v;
+ *out++ = '\'';
+ return out;
}
-FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const char) {
- return add_space ? " '{}'" : "'{}'";
-}
-FMT_CONSTEXPR const wchar_t* format_str_quoted(bool add_space, const wchar_t) {
- return add_space ? L" '{}'" : L"'{}'";
+template <
+ typename Char, typename OutputIt, typename Arg,
+ FMT_ENABLE_IF(!is_std_string_like<typename std::decay<Arg>::type>::value &&
+ !std::is_same<Arg, Char>::value)>
+OutputIt write_range_entry(OutputIt out, const Arg& v) {
+ return write<Char>(out, v);
}
+
} // namespace detail
template <typename T> struct is_tuple_like {
// C++11 generic lambda for format()
template <typename FormatContext> struct format_each {
template <typename T> void operator()(const T& v) {
- if (i > 0) {
- if (formatting.add_prepostfix_space) {
- *out++ = ' ';
- }
- out = detail::copy(formatting.delimiter, out);
- }
- out = format_to(out,
- detail::format_str_quoted(
- (formatting.add_delimiter_spaces && i > 0), v),
- v);
+ if (i > 0) out = detail::write_delimiter(out);
+ out = detail::write_range_entry<Char>(out, v);
++i;
}
-
formatting_tuple<Char>& formatting;
size_t& i;
- typename std::add_lvalue_reference<decltype(
- std::declval<FormatContext>().out())>::type out;
+ typename std::add_lvalue_reference<
+ decltype(std::declval<FormatContext>().out())>::type out;
};
public:
auto format(const TupleT& values, FormatContext& ctx) -> decltype(ctx.out()) {
auto out = ctx.out();
size_t i = 0;
- detail::copy(formatting.prefix, out);
+ detail::copy(formatting.prefix, out);
detail::for_each(values, format_each<FormatContext>{formatting, i, out});
- if (formatting.add_prepostfix_space) {
- *out++ = ' ';
- }
detail::copy(formatting.postfix, out);
return ctx.out();
template <typename T, typename Char> struct is_range {
static FMT_CONSTEXPR_DECL const bool value =
- detail::is_range_<T>::value && !detail::is_like_std_string<T>::value &&
+ detail::is_range_<T>::value && !detail::is_std_string_like<T>::value &&
!std::is_convertible<T, std::basic_string<Char>>::value &&
!std::is_constructible<detail::std_string_view<Char>, T>::value;
};
template <typename T, typename Char>
struct formatter<
T, Char,
- enable_if_t<fmt::is_range<T, Char>::value
+ enable_if_t<
+ fmt::is_range<T, Char>::value
// Workaround a bug in MSVC 2017 and earlier.
#if !FMT_MSC_VER || FMT_MSC_VER >= 1927
- &&
- (has_formatter<detail::value_type<T>, format_context>::value ||
- detail::has_fallback_formatter<detail::value_type<T>,
- format_context>::value)
+ && (has_formatter<detail::value_type<T>, format_context>::value ||
+ detail::has_fallback_formatter<detail::value_type<T>, Char>::value)
#endif
- >> {
+ >> {
formatting_range<Char> formatting;
template <typename ParseContext>
typename FormatContext::iterator format(const T& values, FormatContext& ctx) {
auto out = detail::copy(formatting.prefix, ctx.out());
size_t i = 0;
- auto it = values.begin();
- auto end = values.end();
+ auto view = detail::range_to_view<T>::view(values);
+ auto it = view.begin();
+ auto end = view.end();
for (; it != end; ++it) {
- if (i > 0) {
- if (formatting.add_prepostfix_space) *out++ = ' ';
- out = detail::copy(formatting.delimiter, out);
- }
- out = format_to(out,
- detail::format_str_quoted(
- (formatting.add_delimiter_spaces && i > 0), *it),
- *it);
- if (++i > formatting.range_length_limit) {
- out = format_to(out, " ... <other elements>");
- break;
- }
+ if (i > 0) out = detail::write_delimiter(out);
+ out = detail::write_range_entry<Char>(out, *it);
+ ++i;
}
- if (formatting.add_prepostfix_space) *out++ = ' ';
return detail::copy(formatting.postfix, out);
}
};
-template <typename Char, typename... T> struct tuple_arg_join : detail::view {
+template <typename Char, typename... T> struct tuple_join_view : detail::view {
const std::tuple<T...>& tuple;
basic_string_view<Char> sep;
- tuple_arg_join(const std::tuple<T...>& t, basic_string_view<Char> s)
- : tuple{t}, sep{s} {}
+ tuple_join_view(const std::tuple<T...>& t, basic_string_view<Char> s)
+ : tuple(t), sep{s} {}
};
template <typename Char, typename... T>
-struct formatter<tuple_arg_join<Char, T...>, Char> {
+using tuple_arg_join = tuple_join_view<Char, T...>;
+
+template <typename Char, typename... T>
+struct formatter<tuple_join_view<Char, T...>, Char> {
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
return ctx.begin();
}
template <typename FormatContext>
- typename FormatContext::iterator format(
- const tuple_arg_join<Char, T...>& value, FormatContext& ctx) {
+ auto format(const tuple_join_view<Char, T...>& value, FormatContext& ctx) ->
+ typename FormatContext::iterator {
return format(value, ctx, detail::make_index_sequence<sizeof...(T)>{});
}
private:
template <typename FormatContext, size_t... N>
- typename FormatContext::iterator format(
- const tuple_arg_join<Char, T...>& value, FormatContext& ctx,
- detail::index_sequence<N...>) {
- return format_args(value, ctx, std::get<N>(value.tuple)...);
+ auto format(const tuple_join_view<Char, T...>& value, FormatContext& ctx,
+ detail::index_sequence<N...>) ->
+ typename FormatContext::iterator {
+ using std::get;
+ return format_args(value, ctx, get<N>(value.tuple)...);
}
template <typename FormatContext>
- typename FormatContext::iterator format_args(
- const tuple_arg_join<Char, T...>&, FormatContext& ctx) {
+ auto format_args(const tuple_join_view<Char, T...>&, FormatContext& ctx) ->
+ typename FormatContext::iterator {
// NOTE: for compilers that support C++17, this empty function instantiation
// can be replaced with a constexpr branch in the variadic overload.
return ctx.out();
}
template <typename FormatContext, typename Arg, typename... Args>
- typename FormatContext::iterator format_args(
- const tuple_arg_join<Char, T...>& value, FormatContext& ctx,
- const Arg& arg, const Args&... args) {
+ auto format_args(const tuple_join_view<Char, T...>& value, FormatContext& ctx,
+ const Arg& arg, const Args&... args) ->
+ typename FormatContext::iterator {
using base = formatter<typename std::decay<Arg>::type, Char>;
- auto out = ctx.out();
- out = base{}.format(arg, ctx);
+ auto out = base().format(arg, ctx);
if (sizeof...(Args) > 0) {
out = std::copy(value.sep.begin(), value.sep.end(), out);
ctx.advance_to(out);
}
};
+FMT_MODULE_EXPORT_BEGIN
+
/**
\rst
Returns an object that formats `tuple` with elements separated by `sep`.
\endrst
*/
template <typename... T>
-FMT_CONSTEXPR tuple_arg_join<char, T...> join(const std::tuple<T...>& tuple,
- string_view sep) {
+FMT_CONSTEXPR auto join(const std::tuple<T...>& tuple, string_view sep)
+ -> tuple_join_view<char, T...> {
return {tuple, sep};
}
template <typename... T>
-FMT_CONSTEXPR tuple_arg_join<wchar_t, T...> join(const std::tuple<T...>& tuple,
- wstring_view sep) {
+FMT_CONSTEXPR auto join(const std::tuple<T...>& tuple,
+ basic_string_view<wchar_t> sep)
+ -> tuple_join_view<wchar_t, T...> {
return {tuple, sep};
}
\endrst
*/
template <typename T>
-arg_join<const T*, const T*, char> join(std::initializer_list<T> list,
- string_view sep) {
- return join(std::begin(list), std::end(list), sep);
-}
-
-template <typename T>
-arg_join<const T*, const T*, wchar_t> join(std::initializer_list<T> list,
- wstring_view sep) {
+auto join(std::initializer_list<T> list, string_view sep)
+ -> join_view<const T*, const T*> {
return join(std::begin(list), std::end(list), sep);
}
+FMT_MODULE_EXPORT_END
FMT_END_NAMESPACE
#endif // FMT_RANGES_H_
FMT_NOEXCEPT;
template FMT_API dragonbox::decimal_fp<double> dragonbox::to_decimal(double x)
FMT_NOEXCEPT;
-
-// DEPRECATED! This function exists for ABI compatibility.
-template <typename Char>
-typename basic_format_context<std::back_insert_iterator<buffer<Char>>,
- Char>::iterator
-vformat_to(buffer<Char>& buf, basic_string_view<Char> format_str,
- basic_format_args<basic_format_context<
- std::back_insert_iterator<buffer<type_identity_t<Char>>>,
- type_identity_t<Char>>>
- args) {
- using iterator = std::back_insert_iterator<buffer<char>>;
- using context = basic_format_context<
- std::back_insert_iterator<buffer<type_identity_t<Char>>>,
- type_identity_t<Char>>;
- auto out = iterator(buf);
- format_handler<iterator, Char, context> h(out, format_str, args, {});
- parse_format_string<false>(format_str, h);
- return out;
-}
-template basic_format_context<std::back_insert_iterator<buffer<char>>,
- char>::iterator
-vformat_to(buffer<char>&, string_view,
- basic_format_args<basic_format_context<
- std::back_insert_iterator<buffer<type_identity_t<char>>>,
- type_identity_t<char>>>);
} // namespace detail
-template struct FMT_INSTANTIATION_DEF_API detail::basic_data<void>;
-
// Workaround a bug in MSVC2013 that prevents instantiation of format_float.
int (*instantiate_format_float)(double, int, detail::float_specs,
detail::buffer<char>&) = detail::format_float;
// Explicit instantiations for char.
-template FMT_API std::string detail::grouping_impl<char>(locale_ref);
-template FMT_API char detail::thousands_sep_impl(locale_ref);
+template FMT_API auto detail::thousands_sep_impl(locale_ref)
+ -> thousands_sep_result<char>;
template FMT_API char detail::decimal_point_impl(locale_ref);
template FMT_API void detail::buffer<char>::append(const char*, const char*);
+// DEPRECATED!
+// There is no correspondent extern template in format.h because of
+// incompatibility between clang and gcc (#2377).
template FMT_API void detail::vformat_to(
detail::buffer<char>&, string_view,
basic_format_args<FMT_BUFFER_CONTEXT(char)>, detail::locale_ref);
// Explicit instantiations for wchar_t.
-template FMT_API std::string detail::grouping_impl<wchar_t>(locale_ref);
-template FMT_API wchar_t detail::thousands_sep_impl(locale_ref);
+template FMT_API auto detail::thousands_sep_impl(locale_ref)
+ -> thousands_sep_result<wchar_t>;
template FMT_API wchar_t detail::decimal_point_impl(locale_ref);
template FMT_API void detail::buffer<wchar_t>::append(const wchar_t*,
const wchar_t*);
+
+template struct detail::basic_data<void>;
+
FMT_END_NAMESPACE
# define WIN32_LEAN_AND_MEAN
# endif
# include <io.h>
-# include <windows.h>
# define O_CREAT _O_CREAT
# define O_TRUNC _O_TRUNC
namespace {
#ifdef _WIN32
// Return type of read and write functions.
-using RWResult = int;
+using rwresult = int;
// On Windows the count argument to read and write is unsigned, so convert
// it from size_t preventing integer overflow.
}
#elif FMT_USE_FCNTL
// Return type of read and write functions.
-using RWResult = ssize_t;
+using rwresult = ssize_t;
inline std::size_t convert_rwcount(std::size_t count) { return count; }
#endif
FMT_BEGIN_NAMESPACE
#ifdef _WIN32
-detail::utf16_to_utf8::utf16_to_utf8(wstring_view s) {
+detail::utf16_to_utf8::utf16_to_utf8(basic_string_view<wchar_t> s) {
if (int error_code = convert(s)) {
FMT_THROW(windows_error(error_code,
"cannot convert string from UTF-16 to UTF-8"));
}
}
-int detail::utf16_to_utf8::convert(wstring_view s) {
+int detail::utf16_to_utf8::convert(basic_string_view<wchar_t> s) {
if (s.size() > INT_MAX) return ERROR_INVALID_PARAMETER;
int s_size = static_cast<int>(s.size());
if (s_size == 0) {
return 0;
}
-void windows_error::init(int err_code, string_view format_str,
- format_args args) {
- error_code_ = err_code;
- memory_buffer buffer;
- detail::format_windows_error(buffer, err_code, vformat(format_str, args));
- std::runtime_error& base = *this;
- base = std::runtime_error(to_string(buffer));
+namespace detail {
+
+class system_message {
+ system_message(const system_message&) = delete;
+ void operator=(const system_message&) = delete;
+
+ unsigned long result_;
+ wchar_t* message_;
+
+ static bool is_whitespace(wchar_t c) FMT_NOEXCEPT {
+ return c == L' ' || c == L'\n' || c == L'\r' || c == L'\t' || c == L'\0';
+ }
+
+ public:
+ explicit system_message(unsigned long error_code)
+ : result_(0), message_(nullptr) {
+ result_ = FormatMessageW(
+ FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_IGNORE_INSERTS,
+ nullptr, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+ reinterpret_cast<wchar_t*>(&message_), 0, nullptr);
+ if (result_ != 0) {
+ while (result_ != 0 && is_whitespace(message_[result_ - 1])) {
+ --result_;
+ }
+ }
+ }
+ ~system_message() { LocalFree(message_); }
+ explicit operator bool() const FMT_NOEXCEPT { return result_ != 0; }
+ operator basic_string_view<wchar_t>() const FMT_NOEXCEPT {
+ return basic_string_view<wchar_t>(message_, result_);
+ }
+};
+
+class utf8_system_category final : public std::error_category {
+ public:
+ const char* name() const FMT_NOEXCEPT override { return "system"; }
+ std::string message(int error_code) const override {
+ system_message msg(error_code);
+ if (msg) {
+ utf16_to_utf8 utf8_message;
+ if (utf8_message.convert(msg) == ERROR_SUCCESS) {
+ return utf8_message.str();
+ }
+ }
+ return "unknown error";
+ }
+};
+
+} // namespace detail
+
+FMT_API const std::error_category& system_category() FMT_NOEXCEPT {
+ static const detail::utf8_system_category category;
+ return category;
+}
+
+std::system_error vwindows_error(int err_code, string_view format_str,
+ format_args args) {
+ auto ec = std::error_code(err_code, system_category());
+ return std::system_error(ec, vformat(format_str, args));
}
void detail::format_windows_error(detail::buffer<char>& out, int error_code,
- string_view message) FMT_NOEXCEPT {
+ const char* message) FMT_NOEXCEPT {
FMT_TRY {
- wmemory_buffer buf;
- buf.resize(inline_buffer_size);
- for (;;) {
- wchar_t* system_message = &buf[0];
- int result = FormatMessageW(
- FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, nullptr,
- error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), system_message,
- static_cast<uint32_t>(buf.size()), nullptr);
- if (result != 0) {
- utf16_to_utf8 utf8_message;
- if (utf8_message.convert(system_message) == ERROR_SUCCESS) {
- format_to(buffer_appender<char>(out), "{}: {}", message,
- utf8_message);
- return;
- }
- break;
+ system_message msg(error_code);
+ if (msg) {
+ utf16_to_utf8 utf8_message;
+ if (utf8_message.convert(msg) == ERROR_SUCCESS) {
+ format_to(buffer_appender<char>(out), "{}: {}", message, utf8_message);
+ return;
}
- if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
- break; // Can't get error message, report error code instead.
- buf.resize(buf.size() * 2);
}
}
FMT_CATCH(...) {}
format_error_code(out, error_code, message);
}
-void report_windows_error(int error_code,
- fmt::string_view message) FMT_NOEXCEPT {
+void report_windows_error(int error_code, const char* message) FMT_NOEXCEPT {
report_error(detail::format_windows_error, error_code, message);
}
#endif // _WIN32
}
std::size_t file::read(void* buffer, std::size_t count) {
- RWResult result = 0;
+ rwresult result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(read(fd_, buffer, convert_rwcount(count))));
if (result < 0) FMT_THROW(system_error(errno, "cannot read from file"));
return detail::to_unsigned(result);
}
std::size_t file::write(const void* buffer, std::size_t count) {
- RWResult result = 0;
+ rwresult result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(write(fd_, buffer, convert_rwcount(count))));
if (result < 0) FMT_THROW(system_error(errno, "cannot write to file"));
return detail::to_unsigned(result);
}
}
-void file::dup2(int fd, error_code& ec) FMT_NOEXCEPT {
+void file::dup2(int fd, std::error_code& ec) FMT_NOEXCEPT {
int result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
- if (result == -1) ec = error_code(errno);
+ if (result == -1) ec = std::error_code(errno, std::generic_category());
}
void file::pipe(file& read_end, file& write_end) {
projects / rspamd.git / commitdiff