29#ifndef _GLIBCXX_FORMAT
30#define _GLIBCXX_FORMAT 1
32#pragma GCC system_header
36#define __glibcxx_want_format
37#define __glibcxx_want_format_ranges
38#define __glibcxx_want_format_uchar
41#ifdef __cpp_lib_format
62#if !__has_builtin(__builtin_toupper)
66namespace std _GLIBCXX_VISIBILITY(default)
68_GLIBCXX_BEGIN_NAMESPACE_VERSION
71 template<
typename _Out,
typename _CharT>
class basic_format_context;
74 template<
typename _CharT,
typename... _Args>
struct basic_format_string;
80 template<
typename _CharT>
class _Sink;
82 template<
typename _CharT>
85 template<
typename _CharT>
86 using __format_context = basic_format_context<_Sink_iter<_CharT>, _CharT>;
88 template<
typename _CharT>
89 struct _Runtime_format_string
91 [[__gnu__::__always_inline__]]
92 _Runtime_format_string(basic_string_view<_CharT> __s) noexcept
95 _Runtime_format_string(
const _Runtime_format_string&) =
delete;
96 void operator=(
const _Runtime_format_string&) =
delete;
99 basic_string_view<_CharT> _M_str;
101 template<
typename,
typename...>
friend struct std::basic_format_string;
106 using format_context = __format::__format_context<char>;
107#ifdef _GLIBCXX_USE_WCHAR_T
108 using wformat_context = __format::__format_context<wchar_t>;
112 template<
typename _Context>
class basic_format_args;
113 using format_args = basic_format_args<format_context>;
114#ifdef _GLIBCXX_USE_WCHAR_T
115 using wformat_args = basic_format_args<wformat_context>;
120 template<
typename _Context>
121 class basic_format_arg;
127 template<
typename _CharT,
typename... _Args>
128 struct basic_format_string
130 template<
typename _Tp>
131 requires convertible_to<const _Tp&, basic_string_view<_CharT>>
133 basic_format_string(
const _Tp& __s);
135 [[__gnu__::__always_inline__]]
136 basic_format_string(__format::_Runtime_format_string<_CharT> __s) noexcept
140 [[__gnu__::__always_inline__]]
141 constexpr basic_string_view<_CharT>
146 basic_string_view<_CharT> _M_str;
149 template<
typename... _Args>
150 using format_string = basic_format_string<char, type_identity_t<_Args>...>;
152#ifdef _GLIBCXX_USE_WCHAR_T
153 template<
typename... _Args>
155 = basic_format_string<wchar_t, type_identity_t<_Args>...>;
158#if __cplusplus > 202302L
159 [[__gnu__::__always_inline__]]
160 inline __format::_Runtime_format_string<char>
161 runtime_format(string_view __fmt)
noexcept
164#ifdef _GLIBCXX_USE_WCHAR_T
165 [[__gnu__::__always_inline__]]
166 inline __format::_Runtime_format_string<wchar_t>
167 runtime_format(wstring_view __fmt)
noexcept
175 template<
typename _Tp,
typename _CharT =
char>
178 formatter() =
delete;
179 formatter(
const formatter&) =
delete;
180 formatter& operator=(
const formatter&) =
delete;
184 class format_error :
public runtime_error
187 explicit format_error(
const string& __what) : runtime_error(__what) { }
188 explicit format_error(
const char* __what) : runtime_error(__what) { }
194 __throw_format_error(
const char* __what)
195 { _GLIBCXX_THROW_OR_ABORT(format_error(__what)); }
203 __unmatched_left_brace_in_format_string()
204 { __throw_format_error(
"format error: unmatched '{' in format string"); }
208 __unmatched_right_brace_in_format_string()
209 { __throw_format_error(
"format error: unmatched '}' in format string"); }
213 __conflicting_indexing_in_format_string()
214 { __throw_format_error(
"format error: conflicting indexing style in format string"); }
218 __invalid_arg_id_in_format_string()
219 { __throw_format_error(
"format error: invalid arg-id in format string"); }
223 __failed_to_parse_format_spec()
224 { __throw_format_error(
"format error: failed to parse format-spec"); }
229 template<
typename _CharT>
class basic_format_parse_context;
230 using format_parse_context = basic_format_parse_context<char>;
231#ifdef _GLIBCXX_USE_WCHAR_T
232 using wformat_parse_context = basic_format_parse_context<wchar_t>;
235 template<
typename _CharT>
236 class basic_format_parse_context
239 using char_type = _CharT;
240 using const_iterator =
typename basic_string_view<_CharT>::const_iterator;
241 using iterator = const_iterator;
244 basic_format_parse_context(basic_string_view<_CharT> __fmt,
245 size_t __num_args = 0) noexcept
246 : _M_begin(__fmt.begin()), _M_end(__fmt.end()), _M_num_args(__num_args)
249 basic_format_parse_context(
const basic_format_parse_context&) =
delete;
250 void operator=(
const basic_format_parse_context&) =
delete;
252 constexpr const_iterator
begin() const noexcept {
return _M_begin; }
253 constexpr const_iterator
end() const noexcept {
return _M_end; }
256 advance_to(const_iterator __it)
noexcept
262 if (_M_indexing == _Manual)
263 __format::__conflicting_indexing_in_format_string();
268 if (std::is_constant_evaluated())
269 if (_M_next_arg_id == _M_num_args)
270 __format::__invalid_arg_id_in_format_string();
271 return _M_next_arg_id++;
275 check_arg_id(
size_t __id)
277 if (_M_indexing == _Auto)
278 __format::__conflicting_indexing_in_format_string();
279 _M_indexing = _Manual;
281 if (std::is_constant_evaluated())
282 if (__id >= _M_num_args)
283 __format::__invalid_arg_id_in_format_string();
289 enum _Indexing { _Unknown, _Manual, _Auto };
290 _Indexing _M_indexing = _Unknown;
291 size_t _M_next_arg_id = 0;
296 template<
typename _Tp,
template<
typename...>
class _Class>
297 static constexpr bool __is_specialization_of =
false;
298 template<
template<
typename...>
class _Class,
typename... _Args>
299 static constexpr bool __is_specialization_of<_Class<_Args...>, _Class>
305 template<
typename _CharT>
306 constexpr pair<unsigned short, const _CharT*>
307 __parse_integer(
const _CharT* __first,
const _CharT* __last)
309 if (__first == __last)
310 __builtin_unreachable();
312 if constexpr (is_same_v<_CharT, char>)
314 const auto __start = __first;
315 unsigned short __val = 0;
317 if (__detail::__from_chars_alnum<true>(__first, __last, __val, 10)
318 && __first != __start) [[likely]]
319 return {__val, __first};
323 constexpr int __n = 32;
325 for (
int __i = 0; __i < __n && (__first + __i) != __last; ++__i)
326 __buf[__i] = __first[__i];
327 auto [__v, __ptr] = __format::__parse_integer(__buf, __buf + __n);
328 if (__ptr) [[likely]]
329 return {__v, __first + (__ptr - __buf)};
334 template<
typename _CharT>
335 constexpr pair<unsigned short, const _CharT*>
336 __parse_arg_id(
const _CharT* __first,
const _CharT* __last)
338 if (__first == __last)
339 __builtin_unreachable();
342 return {0, __first + 1};
344 if (
'1' <= *__first && *__first <=
'9')
346 const unsigned short __id = *__first -
'0';
347 const auto __next = __first + 1;
349 if (__next == __last || !(
'0' <= *__next && *__next <=
'9'))
350 return {__id, __next};
352 return __format::__parse_integer(__first, __last);
360 _Pres_d = 1, _Pres_b, _Pres_B, _Pres_o, _Pres_x, _Pres_X, _Pres_c,
362 _Pres_a = 1, _Pres_A, _Pres_e, _Pres_E, _Pres_f, _Pres_F, _Pres_g, _Pres_G,
363 _Pres_p = 0, _Pres_P,
388 template<
typename _Context>
390 __int_from_arg(
const basic_format_arg<_Context>& __arg);
392 constexpr bool __is_digit(
char __c)
393 {
return std::__detail::__from_chars_alnum_to_val(__c) < 10; }
395 constexpr bool __is_xdigit(
char __c)
396 {
return std::__detail::__from_chars_alnum_to_val(__c) < 16; }
398 template<
typename _CharT>
404 unsigned _M_localized : 1;
405 unsigned _M_zero_fill : 1;
406 _WidthPrec _M_width_kind : 2;
407 _WidthPrec _M_prec_kind : 2;
408 _Pres_type _M_type : 4;
409 unsigned _M_reserved : 1;
410 unsigned _M_reserved2 : 16;
411 unsigned short _M_width;
412 unsigned short _M_prec;
413 char32_t _M_fill =
' ';
415 using iterator =
typename basic_string_view<_CharT>::iterator;
417 static constexpr _Align
418 _S_align(_CharT __c)
noexcept
422 case '<':
return _Align_left;
423 case '>':
return _Align_right;
424 case '^':
return _Align_centre;
425 default:
return _Align_default;
431 _M_parse_fill_and_align(iterator __first, iterator __last)
noexcept
435 using namespace __unicode;
436 if constexpr (__literal_encoding_is_unicode<_CharT>())
439 _Utf32_view<ranges::subrange<iterator>> __uv({__first, __last});
442 auto __beg = __uv.begin();
443 char32_t __c = *__beg++;
444 if (__is_scalar_value(__c))
445 if (
auto __next = __beg.base(); __next != __last)
446 if (_Align __align = _S_align(*__next))
454 else if (__last - __first >= 2)
455 if (_Align __align = _S_align(__first[1]))
462 if (_Align __align = _S_align(__first[0]))
472 static constexpr _Sign
473 _S_sign(_CharT __c)
noexcept
477 case '+':
return _Sign_plus;
478 case '-':
return _Sign_minus;
479 case ' ':
return _Sign_space;
480 default:
return _Sign_default;
486 _M_parse_sign(iterator __first, iterator)
noexcept
488 if (_Sign __sign = _S_sign(*__first))
498 _M_parse_alternate_form(iterator __first, iterator)
noexcept
510 _M_parse_zero_fill(iterator __first, iterator )
noexcept
521 static constexpr iterator
522 _S_parse_width_or_precision(iterator __first, iterator __last,
523 unsigned short& __val,
bool& __arg_id,
524 basic_format_parse_context<_CharT>& __pc)
526 if (__format::__is_digit(*__first))
528 auto [__v, __ptr] = __format::__parse_integer(__first, __last);
530 __throw_format_error(
"format error: invalid width or precision "
535 else if (*__first ==
'{')
539 if (__first == __last)
540 __format::__unmatched_left_brace_in_format_string();
542 __val = __pc.next_arg_id();
545 auto [__v, __ptr] = __format::__parse_arg_id(__first, __last);
546 if (__ptr ==
nullptr || __ptr == __last || *__ptr !=
'}')
547 __format::__invalid_arg_id_in_format_string();
549 __pc.check_arg_id(__v);
559 _M_parse_width(iterator __first, iterator __last,
560 basic_format_parse_context<_CharT>& __pc)
562 bool __arg_id =
false;
564 __throw_format_error(
"format error: width must be non-zero in "
566 auto __next = _S_parse_width_or_precision(__first, __last, _M_width,
568 if (__next != __first)
569 _M_width_kind = __arg_id ? _WP_from_arg : _WP_value;
575 _M_parse_precision(iterator __first, iterator __last,
576 basic_format_parse_context<_CharT>& __pc)
578 if (__first[0] !=
'.')
581 iterator __next = ++__first;
582 bool __arg_id =
false;
583 if (__next != __last)
584 __next = _S_parse_width_or_precision(__first, __last, _M_prec,
586 if (__next == __first)
587 __throw_format_error(
"format error: missing precision after '.' in "
589 _M_prec_kind = __arg_id ? _WP_from_arg : _WP_value;
595 _M_parse_locale(iterator __first, iterator )
noexcept
605 template<
typename _Context>
607 _M_get_width(_Context& __ctx)
const
610 if (_M_width_kind == _WP_value)
612 else if (_M_width_kind == _WP_from_arg)
613 __width = __format::__int_from_arg(__ctx.arg(_M_width));
617 template<
typename _Context>
619 _M_get_precision(_Context& __ctx)
const
622 if (_M_prec_kind == _WP_value)
624 else if (_M_prec_kind == _WP_from_arg)
625 __prec = __format::__int_from_arg(__ctx.arg(_M_prec));
630 template<
typename _Int>
632 __put_sign(_Int __i, _Sign __sign,
char* __dest)
noexcept
636 else if (__sign == _Sign_plus)
638 else if (__sign == _Sign_space)
646 template<
typename _Out,
typename _CharT>
647 requires output_iterator<_Out, const _CharT&>
649 __write(_Out __out, basic_string_view<_CharT> __str)
651 if constexpr (is_same_v<_Out, _Sink_iter<_CharT>>)
657 for (_CharT __c : __str)
664 template<
typename _Out,
typename _CharT>
666 __write_padded(_Out __out, basic_string_view<_CharT> __str,
667 _Align __align,
size_t __nfill,
char32_t __fill_char)
669 const size_t __buflen = 0x20;
670 _CharT __padding_chars[__buflen];
671 __padding_chars[0] = _CharT();
672 basic_string_view<_CharT> __padding{__padding_chars, __buflen};
674 auto __pad = [&__padding] (
size_t __n, _Out& __o) {
677 while (__n > __padding.size())
679 __o = __format::__write(
std::move(__o), __padding);
680 __n -= __padding.size();
683 __o = __format::__write(
std::move(__o), __padding.substr(0, __n));
686 size_t __l, __r, __max;
687 if (__align == _Align_centre)
690 __r = __l + (__nfill & 1);
693 else if (__align == _Align_right)
706 using namespace __unicode;
707 if constexpr (__literal_encoding_is_unicode<_CharT>())
708 if (!__is_single_code_unit<_CharT>(__fill_char)) [[unlikely]]
711 const char32_t __arr[1]{ __fill_char };
712 _Utf_view<_CharT,
const char32_t(&)[1]> __v(__arr);
713 basic_string<_CharT> __padstr(__v.begin(), __v.end());
714 __padding = __padstr;
716 __out = __format::__write(
std::move(__out), __padding);
717 __out = __format::__write(
std::move(__out), __str);
719 __out = __format::__write(
std::move(__out), __padding);
723 if (__max < __buflen)
724 __padding.remove_suffix(__buflen - __max);
728 char_traits<_CharT>::assign(__padding_chars, __max, __fill_char);
730 __out = __format::__write(
std::move(__out), __str);
738 template<
typename _CharT,
typename _Out>
740 __write_padded_as_spec(basic_string_view<type_identity_t<_CharT>> __str,
741 size_t __estimated_width,
742 basic_format_context<_Out, _CharT>& __fc,
743 const _Spec<_CharT>& __spec,
744 _Align __align = _Align_left)
746 size_t __width = __spec._M_get_width(__fc);
748 if (__width <= __estimated_width)
749 return __format::__write(__fc.out(), __str);
751 const size_t __nfill = __width - __estimated_width;
754 __align = __spec._M_align;
756 return __format::__write_padded(__fc.out(), __str, __align, __nfill,
761 struct _Optional_locale
763 [[__gnu__::__always_inline__]]
764 _Optional_locale() : _M_dummy(), _M_hasval(false) { }
766 _Optional_locale(
const locale& __loc) noexcept
767 : _M_loc(__loc), _M_hasval(
true)
770 _Optional_locale(
const _Optional_locale& __l) noexcept
771 : _M_dummy(), _M_hasval(__l._M_hasval)
774 std::construct_at(&_M_loc, __l._M_loc);
778 operator=(
const _Optional_locale& __l)
noexcept
790 else if (__l._M_hasval)
792 std::construct_at(&_M_loc, __l._M_loc);
798 ~_Optional_locale() {
if (_M_hasval) _M_loc.~locale(); }
801 operator=(locale&& __loc)
noexcept
807 std::construct_at(&_M_loc,
std::move(__loc));
818 std::construct_at(&_M_loc);
824 bool has_value() const noexcept {
return _M_hasval; }
827 char _M_dummy =
'\0';
830 bool _M_hasval =
false;
833#ifdef _GLIBCXX_USE_WCHAR_T
834 template<
typename _CharT>
835 concept __char = same_as<_CharT, char> || same_as<_CharT, wchar_t>;
837 template<
typename _CharT>
838 concept __char = same_as<_CharT, char>;
841 template<__
char _CharT>
842 struct __formatter_str
844 constexpr typename basic_format_parse_context<_CharT>::iterator
845 parse(basic_format_parse_context<_CharT>& __pc)
847 auto __first = __pc.begin();
848 const auto __last = __pc.end();
849 _Spec<_CharT> __spec{};
851 auto __finalize = [
this, &__spec] {
855 auto __finished = [&] {
856 if (__first == __last || *__first ==
'}')
867 __first = __spec._M_parse_fill_and_align(__first, __last);
871 __first = __spec._M_parse_width(__first, __last, __pc);
875 __first = __spec._M_parse_precision(__first, __last, __pc);
881#if __cpp_lib_format_ranges
882 else if (*__first ==
'?')
884 __spec._M_type = _Pres_esc;
892 __format::__failed_to_parse_format_spec();
895 template<
typename _Out>
897 format(basic_string_view<_CharT> __s,
898 basic_format_context<_Out, _CharT>& __fc)
const
900 if (_M_spec._M_type == _Pres_esc)
905 if (_M_spec._M_width_kind == _WP_none
906 && _M_spec._M_prec_kind == _WP_none)
907 return __format::__write(__fc.out(), __s);
909 size_t __estimated_width;
910 if constexpr (__unicode::__literal_encoding_is_unicode<_CharT>())
912 if (_M_spec._M_prec_kind != _WP_none)
914 size_t __prec = _M_spec._M_get_precision(__fc);
915 __estimated_width = __unicode::__truncate(__s, __prec);
918 __estimated_width = __unicode::__field_width(__s);
922 __s = __s.substr(0, _M_spec._M_get_precision(__fc));
923 __estimated_width = __s.size();
926 return __format::__write_padded_as_spec(__s, __estimated_width,
930#if __cpp_lib_format_ranges
932 set_debug_format() noexcept
933 { _M_spec._M_type = _Pres_esc; }
937 _Spec<_CharT> _M_spec{};
940 template<__
char _CharT>
941 struct __formatter_int
945 static constexpr _Pres_type _AsInteger = _Pres_d;
946 static constexpr _Pres_type _AsBool = _Pres_s;
947 static constexpr _Pres_type _AsChar = _Pres_c;
949 constexpr typename basic_format_parse_context<_CharT>::iterator
950 _M_do_parse(basic_format_parse_context<_CharT>& __pc, _Pres_type __type)
952 _Spec<_CharT> __spec{};
953 __spec._M_type = __type;
955 const auto __last = __pc.end();
956 auto __first = __pc.begin();
958 auto __finalize = [
this, &__spec] {
962 auto __finished = [&] {
963 if (__first == __last || *__first ==
'}')
974 __first = __spec._M_parse_fill_and_align(__first, __last);
978 __first = __spec._M_parse_sign(__first, __last);
982 __first = __spec._M_parse_alternate_form(__first, __last);
986 __first = __spec._M_parse_zero_fill(__first, __last);
990 __first = __spec._M_parse_width(__first, __last, __pc);
994 __first = __spec._M_parse_locale(__first, __last);
1001 __spec._M_type = _Pres_b;
1005 __spec._M_type = _Pres_B;
1011 if (__type != _AsBool)
1013 __spec._M_type = _Pres_c;
1018 __spec._M_type = _Pres_d;
1022 __spec._M_type = _Pres_o;
1026 __spec._M_type = _Pres_x;
1030 __spec._M_type = _Pres_X;
1034 if (__type == _AsBool)
1036 __spec._M_type = _Pres_s;
1040#if __cpp_lib_format_ranges
1042 if (__type == _AsChar)
1044 __spec._M_type = _Pres_esc;
1054 __format::__failed_to_parse_format_spec();
1057 template<
typename _Tp>
1058 constexpr typename basic_format_parse_context<_CharT>::iterator
1059 _M_parse(basic_format_parse_context<_CharT>& __pc)
1061 if constexpr (is_same_v<_Tp, bool>)
1063 auto __end = _M_do_parse(__pc, _AsBool);
1064 if (_M_spec._M_type == _Pres_s)
1065 if (_M_spec._M_sign || _M_spec._M_alt || _M_spec._M_zero_fill)
1066 __throw_format_error(
"format error: format-spec contains "
1067 "invalid formatting options for "
1071 else if constexpr (__char<_Tp>)
1073 auto __end = _M_do_parse(__pc, _AsChar);
1074 if (_M_spec._M_type == _Pres_c || _M_spec._M_type == _Pres_esc)
1075 if (_M_spec._M_sign || _M_spec._M_alt || _M_spec._M_zero_fill
1077 __throw_format_error(
"format error: format-spec contains "
1078 "invalid formatting options for "
1083 return _M_do_parse(__pc, _AsInteger);
1086 template<
typename _Int,
typename _Out>
1087 typename basic_format_context<_Out, _CharT>::iterator
1088 format(_Int __i, basic_format_context<_Out, _CharT>& __fc)
const
1090 if (_M_spec._M_type == _Pres_c)
1091 return _M_format_character(_S_to_character(__i), __fc);
1093 char __buf[
sizeof(_Int) * __CHAR_BIT__ + 3];
1094 to_chars_result __res{};
1096 string_view __base_prefix;
1097 make_unsigned_t<_Int> __u;
1099 __u = -
static_cast<make_unsigned_t<_Int>
>(__i);
1103 char* __start = __buf + 3;
1104 char*
const __end = __buf +
sizeof(__buf);
1105 char*
const __start_digits = __start;
1107 switch (_M_spec._M_type)
1111 __base_prefix = _M_spec._M_type == _Pres_b ?
"0b" :
"0B";
1112 __res = to_chars(__start, __end, __u, 2);
1116 return _M_format_character(_S_to_character(__i), __fc);
1122 __res = to_chars(__start, __end, __u, 10);
1126 __base_prefix =
"0";
1127 __res = to_chars(__start, __end, __u, 8);
1131 __base_prefix = _M_spec._M_type == _Pres_x ?
"0x" :
"0X";
1132 __res = to_chars(__start, __end, __u, 16);
1133 if (_M_spec._M_type == _Pres_X)
1134 for (
auto __p = __start; __p != __res.ptr; ++__p)
1135#
if __has_builtin(__builtin_toupper)
1136 *__p = __builtin_toupper(*__p);
1142 __builtin_unreachable();
1145 if (_M_spec._M_alt && __base_prefix.size())
1147 __start -= __base_prefix.size();
1148 __builtin_memcpy(__start, __base_prefix.data(),
1149 __base_prefix.size());
1151 __start = __format::__put_sign(__i, _M_spec._M_sign, __start - 1);
1153 return _M_format_int(string_view(__start, __res.ptr - __start),
1154 __start_digits - __start, __fc);
1157 template<
typename _Out>
1158 typename basic_format_context<_Out, _CharT>::iterator
1159 format(
bool __i, basic_format_context<_Out, _CharT>& __fc)
const
1161 if (_M_spec._M_type == _Pres_c)
1162 return _M_format_character(
static_cast<unsigned char>(__i), __fc);
1163 if (_M_spec._M_type != _Pres_s)
1164 return format(
static_cast<unsigned char>(__i), __fc);
1166 basic_string<_CharT> __s;
1168 if (_M_spec._M_localized) [[unlikely]]
1170 auto& __np = std::use_facet<numpunct<_CharT>>(__fc.locale());
1171 __s = __i ? __np.truename() : __np.falsename();
1172 __est_width = __s.size();
1176 if constexpr (is_same_v<char, _CharT>)
1177 __s = __i ?
"true" :
"false";
1179 __s = __i ? L
"true" : L
"false";
1180 __est_width = __s.size();
1183 return __format::__write_padded_as_spec(__s, __est_width, __fc,
1187 template<
typename _Out>
1188 typename basic_format_context<_Out, _CharT>::iterator
1189 _M_format_character(_CharT __c,
1190 basic_format_context<_Out, _CharT>& __fc)
const
1192 return __format::__write_padded_as_spec({&__c, 1u}, 1, __fc, _M_spec);
1195 template<
typename _Int>
1197 _S_to_character(_Int __i)
1200 if constexpr (is_signed_v<_Int> == is_signed_v<_CharT>)
1202 if (_Traits::__min <= __i && __i <= _Traits::__max)
1203 return static_cast<_CharT
>(__i);
1205 else if constexpr (is_signed_v<_Int>)
1207 if (__i >= 0 && make_unsigned_t<_Int>(__i) <= _Traits::__max)
1208 return static_cast<_CharT
>(__i);
1210 else if (__i <= make_unsigned_t<_CharT>(_Traits::__max))
1211 return static_cast<_CharT
>(__i);
1212 __throw_format_error(
"format error: integer not representable as "
1216 template<
typename _Out>
1217 typename basic_format_context<_Out, _CharT>::iterator
1218 _M_format_int(string_view __narrow_str,
size_t __prefix_len,
1219 basic_format_context<_Out, _CharT>& __fc)
const
1221 size_t __width = _M_spec._M_get_width(__fc);
1223 basic_string_view<_CharT> __str;
1224 if constexpr (is_same_v<char, _CharT>)
1225 __str = __narrow_str;
1226#ifdef _GLIBCXX_USE_WCHAR_T
1229 size_t __n = __narrow_str.size();
1230 auto __p = (_CharT*)__builtin_alloca(__n *
sizeof(_CharT));
1231 std::__to_wstring_numeric(__narrow_str.data(), __n, __p);
1236 if (_M_spec._M_localized)
1238 const auto& __l = __fc.locale();
1239 if (__l.name() !=
"C")
1241 auto& __np = use_facet<numpunct<_CharT>>(__l);
1242 string __grp = __np.grouping();
1245 size_t __n = __str.size() - __prefix_len;
1246 auto __p = (_CharT*)__builtin_alloca(2 * __n
1249 auto __s = __str.data();
1250 char_traits<_CharT>::copy(__p, __s, __prefix_len);
1251 __s += __prefix_len;
1252 auto __end = std::__add_grouping(__p + __prefix_len,
1253 __np.thousands_sep(),
1257 __str = {__p, size_t(__end - __p)};
1262 if (__width <= __str.size())
1263 return __format::__write(__fc.out(), __str);
1265 char32_t __fill_char = _M_spec._M_fill;
1266 _Align __align = _M_spec._M_align;
1268 size_t __nfill = __width - __str.size();
1269 auto __out = __fc.out();
1270 if (__align == _Align_default)
1272 __align = _Align_right;
1273 if (_M_spec._M_zero_fill)
1275 __fill_char = _CharT(
'0');
1277 if (__prefix_len != 0)
1279 __out = __format::__write(
std::move(__out),
1280 __str.substr(0, __prefix_len));
1281 __str.remove_prefix(__prefix_len);
1285 __fill_char = _CharT(
' ');
1287 return __format::__write_padded(
std::move(__out), __str,
1288 __align, __nfill, __fill_char);
1291#if defined __SIZEOF_INT128__ && defined __STRICT_ANSI__
1292 template<
typename _Tp>
1294 =
typename __conditional_t<(
sizeof(_Tp) <=
sizeof(
long long)),
1296 type_identity<unsigned __int128>>::type;
1299 template<
typename _Int>
1300 static to_chars_result
1301 to_chars(
char* __first,
char* __last, _Int __value,
int __base)
1302 {
return std::__to_chars_i<_Int>(__first, __last, __value, __base); }
1305 _Spec<_CharT> _M_spec{};
1316#undef _GLIBCXX_FORMAT_F128
1318#ifdef _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT
1321 using __float128_t = __ieee128;
1322# define _GLIBCXX_FORMAT_F128 1
1324#ifdef __LONG_DOUBLE_IEEE128__
1328 to_chars(
char*,
char*, __ibm128)
noexcept
1329 __asm(
"_ZSt8to_charsPcS_e");
1332 to_chars(
char*,
char*, __ibm128, chars_format)
noexcept
1333 __asm(
"_ZSt8to_charsPcS_eSt12chars_format");
1336 to_chars(
char*,
char*, __ibm128, chars_format,
int)
noexcept
1337 __asm(
"_ZSt8to_charsPcS_eSt12chars_formati");
1338#elif __cplusplus == 202002L
1340 to_chars(
char*,
char*, __ieee128)
noexcept
1341 __asm(
"_ZSt8to_charsPcS_u9__ieee128");
1344 to_chars(
char*,
char*, __ieee128, chars_format)
noexcept
1345 __asm(
"_ZSt8to_charsPcS_u9__ieee128St12chars_format");
1348 to_chars(
char*,
char*, __ieee128, chars_format,
int)
noexcept
1349 __asm(
"_ZSt8to_charsPcS_u9__ieee128St12chars_formati");
1352#elif defined _GLIBCXX_LDOUBLE_IS_IEEE_BINARY128
1355 using __float128_t =
long double;
1356# define _GLIBCXX_FORMAT_F128 1
1358#elif __FLT128_DIG__ && defined(_GLIBCXX_HAVE_FLOAT128_MATH)
1361 using __float128_t = _Float128;
1362# define _GLIBCXX_FORMAT_F128 2
1364# if __cplusplus == 202002L
1368 to_chars(
char*,
char*, _Float128)
noexcept
1369# if _GLIBCXX_INLINE_VERSION
1370 __asm(
"_ZNSt3__88to_charsEPcS0_DF128_");
1372 __asm(
"_ZSt8to_charsPcS_DF128_");
1376 to_chars(
char*,
char*, _Float128, chars_format)
noexcept
1377# if _GLIBCXX_INLINE_VERSION
1378 __asm(
"_ZNSt3__88to_charsEPcS0_DF128_NS_12chars_formatE");
1380 __asm(
"_ZSt8to_charsPcS_DF128_St12chars_format");
1384 to_chars(
char*,
char*, _Float128, chars_format,
int)
noexcept
1385# if _GLIBCXX_INLINE_VERSION
1386 __asm(
"_ZNSt3__88to_charsEPcS0_DF128_NS_12chars_formatEi");
1388 __asm(
"_ZSt8to_charsPcS_DF128_St12chars_formati");
1393 using std::to_chars;
1396 template<
typename _Tp>
1397 concept __formattable_float =
requires (_Tp __t,
char* __p)
1398 { __format::to_chars(__p, __p, __t, chars_format::scientific, 6); };
1400 template<__
char _CharT>
1401 struct __formatter_fp
1403 constexpr typename basic_format_parse_context<_CharT>::iterator
1404 parse(basic_format_parse_context<_CharT>& __pc)
1406 _Spec<_CharT> __spec{};
1407 const auto __last = __pc.end();
1408 auto __first = __pc.begin();
1410 auto __finalize = [
this, &__spec] {
1414 auto __finished = [&] {
1415 if (__first == __last || *__first ==
'}')
1426 __first = __spec._M_parse_fill_and_align(__first, __last);
1430 __first = __spec._M_parse_sign(__first, __last);
1434 __first = __spec._M_parse_alternate_form(__first, __last);
1438 __first = __spec._M_parse_zero_fill(__first, __last);
1442 if (__first[0] !=
'.')
1444 __first = __spec._M_parse_width(__first, __last, __pc);
1449 __first = __spec._M_parse_precision(__first, __last, __pc);
1453 __first = __spec._M_parse_locale(__first, __last);
1460 __spec._M_type = _Pres_a;
1464 __spec._M_type = _Pres_A;
1468 __spec._M_type = _Pres_e;
1472 __spec._M_type = _Pres_E;
1476 __spec._M_type = _Pres_f;
1480 __spec._M_type = _Pres_F;
1484 __spec._M_type = _Pres_g;
1488 __spec._M_type = _Pres_G;
1496 __format::__failed_to_parse_format_spec();
1499 template<
typename _Fp,
typename _Out>
1500 typename basic_format_context<_Out, _CharT>::iterator
1501 format(_Fp __v, basic_format_context<_Out, _CharT>& __fc)
const
1505 to_chars_result __res{};
1508 bool __use_prec = _M_spec._M_prec_kind != _WP_none;
1510 __prec = _M_spec._M_get_precision(__fc);
1512 char* __start = __buf + 1;
1513 char* __end = __buf +
sizeof(__buf);
1516 bool __upper =
false;
1517 bool __trailing_zeros =
false;
1520 switch (_M_spec._M_type)
1527 if (_M_spec._M_type != _Pres_A)
1529 __fmt = chars_format::hex;
1537 __fmt = chars_format::scientific;
1544 __fmt = chars_format::fixed;
1551 __trailing_zeros =
true;
1553 __fmt = chars_format::general;
1557 __fmt = chars_format::general;
1560 __builtin_unreachable();
1564 auto __to_chars = [&](
char* __b,
char* __e) {
1566 return __format::to_chars(__b, __e, __v, __fmt, __prec);
1567 else if (__fmt != chars_format{})
1568 return __format::to_chars(__b, __e, __v, __fmt);
1570 return __format::to_chars(__b, __e, __v);
1574 __res = __to_chars(__start, __end);
1576 if (__builtin_expect(__res.ec == errc::value_too_large, 0))
1580 size_t __guess = 8 + __prec;
1581 if (__fmt == chars_format::fixed)
1583 if constexpr (is_same_v<_Fp, float> || is_same_v<_Fp, double>
1584 || is_same_v<_Fp, long double>)
1589 if constexpr (is_same_v<_Fp, float>)
1590 __builtin_frexpf(__v, &__exp);
1591 else if constexpr (is_same_v<_Fp, double>)
1592 __builtin_frexp(__v, &__exp);
1593 else if constexpr (is_same_v<_Fp, long double>)
1594 __builtin_frexpl(__v, &__exp);
1596 __guess += 1U + __exp * 4004U / 13301U;
1599 __guess += numeric_limits<_Fp>::max_exponent10;
1601 if (__guess <=
sizeof(__buf)) [[unlikely]]
1602 __guess =
sizeof(__buf) * 2;
1607 auto __overwrite = [&__to_chars, &__res] (
char* __p,
size_t __n)
1609 __res = __to_chars(__p + 1, __p + __n - 1);
1610 return __res.ec == errc{} ? __res.ptr - __p : 0;
1615 __start = __dynbuf.
data() + 1;
1616 __end = __dynbuf.
data() + __dynbuf.
size();
1618 while (__builtin_expect(__res.ec == errc::value_too_large, 0));
1624 for (
char* __p = __start; __p != __res.ptr; ++__p)
1628 bool __have_sign =
true;
1630 if (!__builtin_signbit(__v))
1632 if (_M_spec._M_sign == _Sign_plus)
1634 else if (_M_spec._M_sign == _Sign_space)
1637 __have_sign =
false;
1640 string_view __narrow_str(__start, __res.ptr - __start);
1644 if (_M_spec._M_alt && __builtin_isfinite(__v))
1646 string_view __s = __narrow_str;
1650 size_t __d = __s.find(
'.');
1651 if (__d != __s.npos)
1653 __p = __s.find(__expc, __d + 1);
1654 if (__p == __s.npos)
1658 if (__trailing_zeros)
1661 if (__s[__have_sign] !=
'0')
1663 __sigfigs = __p - __have_sign - 1;
1668 __sigfigs = __p - __s.find_first_not_of(
'0', __d + 1);
1673 __p = __s.find(__expc);
1674 if (__p == __s.npos)
1677 __sigfigs = __d - __have_sign;
1680 if (__trailing_zeros && __prec != 0)
1685 __z = __prec - __sigfigs;
1688 if (
size_t __extras =
int(__d == __p) + __z)
1690 if (__dynbuf.
empty() && __extras <=
size_t(__end - __res.ptr))
1694 __builtin_memmove(__start + __p + __extras,
1698 __start[__p++] =
'.';
1699 __builtin_memset(__start + __p,
'0', __z);
1700 __narrow_str = {__s.data(), __s.size() + __extras};
1704 __dynbuf.
reserve(__s.size() + __extras);
1705 if (__dynbuf.
empty())
1707 __dynbuf = __s.
substr(0, __p);
1711 __dynbuf.
append(__z,
'0');
1712 __dynbuf.
append(__s.substr(__p));
1716 __dynbuf.
insert(__p, __extras,
'0');
1718 __dynbuf[__p] =
'.';
1720 __narrow_str = __dynbuf;
1725 basic_string<_CharT> __wstr;
1726 basic_string_view<_CharT> __str;
1727 if constexpr (is_same_v<_CharT, char>)
1728 __str = __narrow_str;
1729#ifdef _GLIBCXX_USE_WCHAR_T
1732 __wstr = std::__to_wstring_numeric(__narrow_str);
1737 if (_M_spec._M_localized)
1739 __wstr = _M_localize(__str, __expc, __fc.locale());
1740 if (!__wstr.empty())
1744 size_t __width = _M_spec._M_get_width(__fc);
1746 if (__width <= __str.size())
1747 return __format::__write(__fc.out(), __str);
1749 char32_t __fill_char = _M_spec._M_fill;
1750 _Align __align = _M_spec._M_align;
1752 size_t __nfill = __width - __str.size();
1753 auto __out = __fc.out();
1754 if (__align == _Align_default)
1756 __align = _Align_right;
1757 if (_M_spec._M_zero_fill && __builtin_isfinite(__v))
1759 __fill_char = _CharT(
'0');
1761 if (!__format::__is_xdigit(__narrow_str[0]))
1763 *__out++ = __str[0];
1764 __str.remove_prefix(1);
1768 __fill_char = _CharT(
' ');
1770 return __format::__write_padded(
std::move(__out), __str,
1771 __align, __nfill, __fill_char);
1775 basic_string<_CharT>
1776 _M_localize(basic_string_view<_CharT> __str,
char __expc,
1777 const locale& __loc)
const
1779 basic_string<_CharT> __lstr;
1781 if (__loc == locale::classic())
1784 const auto& __np = use_facet<numpunct<_CharT>>(__loc);
1785 const _CharT __point = __np.decimal_point();
1786 const string __grp = __np.grouping();
1788 _CharT __dot, __exp;
1789 if constexpr (is_same_v<_CharT, char>)
1812 __builtin_unreachable();
1816 if (__grp.empty() && __point == __dot)
1819 size_t __d = __str.find(__dot);
1820 size_t __e = min(__d, __str.find(__exp));
1821 if (__e == __str.npos)
1823 const size_t __r = __str.size() - __e;
1824 auto __overwrite = [&](_CharT* __p, size_t) {
1825 auto __end = std::__add_grouping(__p, __np.thousands_sep(),
1826 __grp.data(), __grp.size(),
1827 __str.data(), __str.data() + __e);
1830 if (__d != __str.npos)
1837 __end += __str.copy(__end, __str.npos, __e);
1839 return (__end - __p);
1841 __lstr.__resize_and_overwrite(__e * 2 + __r, __overwrite);
1845 _Spec<_CharT> _M_spec{};
1852 template<__format::__
char _CharT>
1853 struct formatter<_CharT, _CharT>
1855 formatter() =
default;
1857 constexpr typename basic_format_parse_context<_CharT>::iterator
1858 parse(basic_format_parse_context<_CharT>& __pc)
1860 return _M_f.template _M_parse<_CharT>(__pc);
1863 template<
typename _Out>
1864 typename basic_format_context<_Out, _CharT>::iterator
1865 format(_CharT __u, basic_format_context<_Out, _CharT>& __fc)
const
1867 if (_M_f._M_spec._M_type == __format::_Pres_none
1868 || _M_f._M_spec._M_type == __format::_Pres_c)
1869 return _M_f._M_format_character(__u, __fc);
1870 else if (_M_f._M_spec._M_type == __format::_Pres_esc)
1876 return _M_f.format(
static_cast<make_unsigned_t<_CharT>
>(__u), __fc);
1879#if __cpp_lib_format_ranges
1881 set_debug_format() noexcept
1882 { _M_f._M_spec._M_type = __format::_Pres_esc; }
1886 __format::__formatter_int<_CharT> _M_f;
1889#ifdef _GLIBCXX_USE_WCHAR_T
1892 struct formatter<char, wchar_t>
1894 formatter() =
default;
1896 constexpr typename basic_format_parse_context<wchar_t>::iterator
1897 parse(basic_format_parse_context<wchar_t>& __pc)
1899 return _M_f._M_parse<
char>(__pc);
1902 template<
typename _Out>
1903 typename basic_format_context<_Out, wchar_t>::iterator
1904 format(
char __u, basic_format_context<_Out, wchar_t>& __fc)
const
1906 if (_M_f._M_spec._M_type == __format::_Pres_none
1907 || _M_f._M_spec._M_type == __format::_Pres_c)
1908 return _M_f._M_format_character(__u, __fc);
1909 else if (_M_f._M_spec._M_type == __format::_Pres_esc)
1915 return _M_f.format(
static_cast<unsigned char>(__u), __fc);
1918#if __cpp_lib_format_ranges
1920 set_debug_format() noexcept
1921 { _M_f._M_spec._M_type = __format::_Pres_esc; }
1925 __format::__formatter_int<wchar_t> _M_f;
1932 template<__format::__
char _CharT>
1933 struct formatter<_CharT*, _CharT>
1935 formatter() =
default;
1937 [[__gnu__::__always_inline__]]
1938 constexpr typename basic_format_parse_context<_CharT>::iterator
1939 parse(basic_format_parse_context<_CharT>& __pc)
1940 {
return _M_f.parse(__pc); }
1942 template<
typename _Out>
1943 [[__gnu__::__nonnull__]]
1944 typename basic_format_context<_Out, _CharT>::iterator
1945 format(_CharT* __u, basic_format_context<_Out, _CharT>& __fc)
const
1946 {
return _M_f.format(__u, __fc); }
1948#if __cpp_lib_format_ranges
1949 constexpr void set_debug_format() noexcept { _M_f.set_debug_format(); }
1953 __format::__formatter_str<_CharT> _M_f;
1956 template<__format::__
char _CharT>
1957 struct formatter<const _CharT*, _CharT>
1959 formatter() =
default;
1961 [[__gnu__::__always_inline__]]
1962 constexpr typename basic_format_parse_context<_CharT>::iterator
1963 parse(basic_format_parse_context<_CharT>& __pc)
1964 {
return _M_f.parse(__pc); }
1966 template<
typename _Out>
1967 [[__gnu__::__nonnull__]]
1968 typename basic_format_context<_Out, _CharT>::iterator
1969 format(
const _CharT* __u,
1970 basic_format_context<_Out, _CharT>& __fc)
const
1971 {
return _M_f.format(__u, __fc); }
1973#if __cpp_lib_format_ranges
1974 constexpr void set_debug_format() noexcept { _M_f.set_debug_format(); }
1978 __format::__formatter_str<_CharT> _M_f;
1981 template<__format::__
char _CharT,
size_t _Nm>
1982 struct formatter<_CharT[_Nm], _CharT>
1984 formatter() =
default;
1986 [[__gnu__::__always_inline__]]
1987 constexpr typename basic_format_parse_context<_CharT>::iterator
1988 parse(basic_format_parse_context<_CharT>& __pc)
1989 {
return _M_f.parse(__pc); }
1991 template<
typename _Out>
1992 typename basic_format_context<_Out, _CharT>::iterator
1993 format(
const _CharT (&__u)[_Nm],
1994 basic_format_context<_Out, _CharT>& __fc)
const
1995 {
return _M_f.format({__u, _Nm}, __fc); }
1997#if __cpp_lib_format_ranges
1998 constexpr void set_debug_format() noexcept { _M_f.set_debug_format(); }
2002 __format::__formatter_str<_CharT> _M_f;
2005 template<
typename _Traits,
typename _Alloc>
2006 struct formatter<basic_string<char, _Traits, _Alloc>, char>
2008 formatter() =
default;
2010 [[__gnu__::__always_inline__]]
2011 constexpr typename basic_format_parse_context<char>::iterator
2012 parse(basic_format_parse_context<char>& __pc)
2013 {
return _M_f.parse(__pc); }
2015 template<
typename _Out>
2016 typename basic_format_context<_Out, char>::iterator
2017 format(
const basic_string<char, _Traits, _Alloc>& __u,
2018 basic_format_context<_Out, char>& __fc)
const
2019 {
return _M_f.format(__u, __fc); }
2021#if __cpp_lib_format_ranges
2022 constexpr void set_debug_format() noexcept { _M_f.set_debug_format(); }
2026 __format::__formatter_str<char> _M_f;
2029#ifdef _GLIBCXX_USE_WCHAR_T
2030 template<
typename _Traits,
typename _Alloc>
2031 struct formatter<basic_string<wchar_t, _Traits, _Alloc>, wchar_t>
2033 formatter() =
default;
2035 [[__gnu__::__always_inline__]]
2036 constexpr typename basic_format_parse_context<wchar_t>::iterator
2037 parse(basic_format_parse_context<wchar_t>& __pc)
2038 {
return _M_f.parse(__pc); }
2040 template<
typename _Out>
2041 typename basic_format_context<_Out, wchar_t>::iterator
2042 format(
const basic_string<wchar_t, _Traits, _Alloc>& __u,
2043 basic_format_context<_Out, wchar_t>& __fc)
const
2044 {
return _M_f.format(__u, __fc); }
2046#if __cpp_lib_format_ranges
2047 constexpr void set_debug_format() noexcept { _M_f.set_debug_format(); }
2051 __format::__formatter_str<wchar_t> _M_f;
2055 template<
typename _Traits>
2056 struct formatter<basic_string_view<char, _Traits>, char>
2058 formatter() =
default;
2060 [[__gnu__::__always_inline__]]
2061 constexpr typename basic_format_parse_context<char>::iterator
2062 parse(basic_format_parse_context<char>& __pc)
2063 {
return _M_f.parse(__pc); }
2065 template<
typename _Out>
2066 typename basic_format_context<_Out, char>::iterator
2067 format(basic_string_view<char, _Traits> __u,
2068 basic_format_context<_Out, char>& __fc)
const
2069 {
return _M_f.format(__u, __fc); }
2071#if __cpp_lib_format_ranges
2072 constexpr void set_debug_format() noexcept { _M_f.set_debug_format(); }
2076 __format::__formatter_str<char> _M_f;
2079#ifdef _GLIBCXX_USE_WCHAR_T
2080 template<
typename _Traits>
2081 struct formatter<basic_string_view<wchar_t, _Traits>, wchar_t>
2083 formatter() =
default;
2085 [[__gnu__::__always_inline__]]
2086 constexpr typename basic_format_parse_context<wchar_t>::iterator
2087 parse(basic_format_parse_context<wchar_t>& __pc)
2088 {
return _M_f.parse(__pc); }
2090 template<
typename _Out>
2091 typename basic_format_context<_Out, wchar_t>::iterator
2092 format(basic_string_view<wchar_t, _Traits> __u,
2093 basic_format_context<_Out, wchar_t>& __fc)
const
2094 {
return _M_f.format(__u, __fc); }
2096#if __cpp_lib_format_ranges
2097 constexpr void set_debug_format() noexcept { _M_f.set_debug_format(); }
2101 __format::__formatter_str<wchar_t> _M_f;
2107 template<
integral _Tp, __format::__
char _CharT>
2108 requires (!__is_one_of<_Tp, char, wchar_t, char16_t, char32_t>::value)
2109 struct formatter<_Tp, _CharT>
2111 formatter() =
default;
2113 [[__gnu__::__always_inline__]]
2114 constexpr typename basic_format_parse_context<_CharT>::iterator
2115 parse(basic_format_parse_context<_CharT>& __pc)
2117 return _M_f.template _M_parse<_Tp>(__pc);
2120 template<
typename _Out>
2121 typename basic_format_context<_Out, _CharT>::iterator
2122 format(_Tp __u, basic_format_context<_Out, _CharT>& __fc)
const
2123 {
return _M_f.format(__u, __fc); }
2126 __format::__formatter_int<_CharT> _M_f;
2129#if defined __SIZEOF_INT128__ && defined __STRICT_ANSI__
2130 template<
typename _Tp, __format::__
char _CharT>
2131 requires (__is_one_of<_Tp, __int128, unsigned __int128>::value)
2132 struct formatter<_Tp, _CharT>
2134 formatter() =
default;
2136 [[__gnu__::__always_inline__]]
2137 constexpr typename basic_format_parse_context<_CharT>::iterator
2138 parse(basic_format_parse_context<_CharT>& __pc)
2140 return _M_f.template _M_parse<_Tp>(__pc);
2143 template<
typename _Out>
2144 typename basic_format_context<_Out, _CharT>::iterator
2145 format(_Tp __u, basic_format_context<_Out, _CharT>& __fc)
const
2146 {
return _M_f.format(__u, __fc); }
2149 __format::__formatter_int<_CharT> _M_f;
2153#if defined __glibcxx_to_chars
2155 template<__format::__formattable_
float _Tp, __format::__
char _CharT>
2156 struct formatter<_Tp, _CharT>
2158 formatter() =
default;
2160 [[__gnu__::__always_inline__]]
2161 constexpr typename basic_format_parse_context<_CharT>::iterator
2162 parse(basic_format_parse_context<_CharT>& __pc)
2163 {
return _M_f.parse(__pc); }
2165 template<
typename _Out>
2166 typename basic_format_context<_Out, _CharT>::iterator
2167 format(_Tp __u, basic_format_context<_Out, _CharT>& __fc)
const
2168 {
return _M_f.format(__u, __fc); }
2171 __format::__formatter_fp<_CharT> _M_f;
2174#if __LDBL_MANT_DIG__ == __DBL_MANT_DIG__
2176 template<__format::__
char _CharT>
2177 struct formatter<long double, _CharT>
2179 formatter() =
default;
2181 [[__gnu__::__always_inline__]]
2182 constexpr typename basic_format_parse_context<_CharT>::iterator
2183 parse(basic_format_parse_context<_CharT>& __pc)
2184 {
return _M_f.parse(__pc); }
2186 template<
typename _Out>
2187 typename basic_format_context<_Out, _CharT>::iterator
2188 format(
long double __u, basic_format_context<_Out, _CharT>& __fc)
const
2189 {
return _M_f.format((
double)__u, __fc); }
2192 __format::__formatter_fp<_CharT> _M_f;
2196#ifdef __STDCPP_FLOAT16_T__
2198 template<__format::__
char _CharT>
2199 struct formatter<_Float16, _CharT>
2201 formatter() =
default;
2203 [[__gnu__::__always_inline__]]
2204 constexpr typename basic_format_parse_context<_CharT>::iterator
2205 parse(basic_format_parse_context<_CharT>& __pc)
2206 {
return _M_f.parse(__pc); }
2208 template<
typename _Out>
2209 typename basic_format_context<_Out, _CharT>::iterator
2210 format(_Float16 __u, basic_format_context<_Out, _CharT>& __fc)
const
2211 {
return _M_f.format((
float)__u, __fc); }
2214 __format::__formatter_fp<_CharT> _M_f;
2218#if defined(__FLT32_DIG__)
2220 template<__format::__
char _CharT>
2221 struct formatter<_Float32, _CharT>
2223 formatter() =
default;
2225 [[__gnu__::__always_inline__]]
2226 constexpr typename basic_format_parse_context<_CharT>::iterator
2227 parse(basic_format_parse_context<_CharT>& __pc)
2228 {
return _M_f.parse(__pc); }
2230 template<
typename _Out>
2231 typename basic_format_context<_Out, _CharT>::iterator
2232 format(_Float32 __u, basic_format_context<_Out, _CharT>& __fc)
const
2233 {
return _M_f.format((
float)__u, __fc); }
2236 __format::__formatter_fp<_CharT> _M_f;
2240#if defined(__FLT64_DIG__)
2242 template<__format::__
char _CharT>
2243 struct formatter<_Float64, _CharT>
2245 formatter() =
default;
2247 [[__gnu__::__always_inline__]]
2248 constexpr typename basic_format_parse_context<_CharT>::iterator
2249 parse(basic_format_parse_context<_CharT>& __pc)
2250 {
return _M_f.parse(__pc); }
2252 template<
typename _Out>
2253 typename basic_format_context<_Out, _CharT>::iterator
2254 format(_Float64 __u, basic_format_context<_Out, _CharT>& __fc)
const
2255 {
return _M_f.format((
double)__u, __fc); }
2258 __format::__formatter_fp<_CharT> _M_f;
2262#if defined(__FLT128_DIG__) && _GLIBCXX_FORMAT_F128 == 1
2264 template<__format::__
char _CharT>
2265 struct formatter<_Float128, _CharT>
2267 formatter() =
default;
2269 [[__gnu__::__always_inline__]]
2270 constexpr typename basic_format_parse_context<_CharT>::iterator
2271 parse(basic_format_parse_context<_CharT>& __pc)
2272 {
return _M_f.parse(__pc); }
2274 template<
typename _Out>
2275 typename basic_format_context<_Out, _CharT>::iterator
2276 format(_Float128 __u, basic_format_context<_Out, _CharT>& __fc)
const
2277 {
return _M_f.format((__format::__float128_t)__u, __fc); }
2280 __format::__formatter_fp<_CharT> _M_f;
2284#ifdef __STDCPP_BFLOAT16_T__
2286 template<__format::__
char _CharT>
2287 struct formatter<
__gnu_cxx::__bfloat16_t, _CharT>
2289 formatter() =
default;
2291 [[__gnu__::__always_inline__]]
2292 constexpr typename basic_format_parse_context<_CharT>::iterator
2293 parse(basic_format_parse_context<_CharT>& __pc)
2294 {
return _M_f.parse(__pc); }
2296 template<
typename _Out>
2297 typename basic_format_context<_Out, _CharT>::iterator
2298 format(__gnu_cxx::__bfloat16_t __u,
2299 basic_format_context<_Out, _CharT>& __fc)
const
2300 {
return _M_f.format((
float)__u, __fc); }
2303 __format::__formatter_fp<_CharT> _M_f;
2311 template<__format::__
char _CharT>
2312 struct formatter<const void*, _CharT>
2314 formatter() =
default;
2316 constexpr typename basic_format_parse_context<_CharT>::iterator
2317 parse(basic_format_parse_context<_CharT>& __pc)
2319 __format::_Spec<_CharT> __spec{};
2320 const auto __last = __pc.end();
2321 auto __first = __pc.begin();
2323 auto __finalize = [
this, &__spec] {
2327 auto __finished = [&] {
2328 if (__first == __last || *__first ==
'}')
2339 __first = __spec._M_parse_fill_and_align(__first, __last);
2345#if __cplusplus > 202302L || ! defined __STRICT_ANSI__
2346#define _GLIBCXX_P2518R3 1
2348#define _GLIBCXX_P2518R3 0
2352 __first = __spec._M_parse_zero_fill(__first, __last);
2357 __first = __spec._M_parse_width(__first, __last, __pc);
2359 if (__first != __last)
2361 if (*__first ==
'p')
2364 else if (*__first ==
'P')
2368 __spec._M_type = __format::_Pres_P;
2377 __format::__failed_to_parse_format_spec();
2380 template<
typename _Out>
2381 typename basic_format_context<_Out, _CharT>::iterator
2382 format(
const void* __v, basic_format_context<_Out, _CharT>& __fc)
const
2384 auto __u =
reinterpret_cast<__UINTPTR_TYPE__
>(__v);
2385 char __buf[2 +
sizeof(__v) * 2];
2386 auto [__ptr, __ec] = std::to_chars(__buf + 2,
std::end(__buf),
2388 int __n = __ptr - __buf;
2392 if (_M_spec._M_type == __format::_Pres_P)
2395 for (
auto __p = __buf + 2; __p != __ptr; ++__p)
2396#
if __has_builtin(__builtin_toupper)
2397 *__p = __builtin_toupper(*__p);
2404 basic_string_view<_CharT> __str;
2405 if constexpr (is_same_v<_CharT, char>)
2406 __str = string_view(__buf, __n);
2407#ifdef _GLIBCXX_USE_WCHAR_T
2410 auto __p = (_CharT*)__builtin_alloca(__n *
sizeof(_CharT));
2411 std::__to_wstring_numeric(__buf, __n, __p);
2412 __str = wstring_view(__p, __n);
2417 if (_M_spec._M_zero_fill)
2419 size_t __width = _M_spec._M_get_width(__fc);
2420 if (__width <= __str.size())
2421 return __format::__write(__fc.out(), __str);
2423 auto __out = __fc.out();
2425 __out = __format::__write(
std::move(__out), __str.substr(0, 2));
2426 __str.remove_prefix(2);
2427 size_t __nfill = __width - __n;
2428 return __format::__write_padded(
std::move(__out), __str,
2429 __format::_Align_right,
2430 __nfill, _CharT(
'0'));
2434 return __format::__write_padded_as_spec(__str, __n, __fc, _M_spec,
2435 __format::_Align_right);
2439 __format::_Spec<_CharT> _M_spec{};
2442 template<__format::__
char _CharT>
2443 struct formatter<void*, _CharT>
2445 formatter() =
default;
2447 [[__gnu__::__always_inline__]]
2448 constexpr typename basic_format_parse_context<_CharT>::iterator
2449 parse(basic_format_parse_context<_CharT>& __pc)
2450 {
return _M_f.parse(__pc); }
2452 template<
typename _Out>
2453 typename basic_format_context<_Out, _CharT>::iterator
2454 format(
void* __v, basic_format_context<_Out, _CharT>& __fc)
const
2455 {
return _M_f.format(__v, __fc); }
2458 formatter<const void*, _CharT> _M_f;
2461 template<__format::__
char _CharT>
2462 struct formatter<nullptr_t, _CharT>
2464 formatter() =
default;
2466 [[__gnu__::__always_inline__]]
2467 constexpr typename basic_format_parse_context<_CharT>::iterator
2468 parse(basic_format_parse_context<_CharT>& __pc)
2469 {
return _M_f.parse(__pc); }
2471 template<
typename _Out>
2472 typename basic_format_context<_Out, _CharT>::iterator
2473 format(nullptr_t, basic_format_context<_Out, _CharT>& __fc)
const
2474 {
return _M_f.format(
nullptr, __fc); }
2477 formatter<const void*, _CharT> _M_f;
2481#if defined _GLIBCXX_USE_WCHAR_T && __cpp_lib_format_ranges
2485 namespace __format {
struct __disabled; }
2489 struct formatter<char*,
wchar_t>
2490 :
private formatter<__format::__disabled, wchar_t> { };
2492 struct formatter<const char*,
wchar_t>
2493 :
private formatter<__format::__disabled, wchar_t> { };
2494 template<
size_t _Nm>
2495 struct formatter<char[_Nm], wchar_t>
2496 :
private formatter<__format::__disabled, wchar_t> { };
2497 template<
class _Traits,
class _Allocator>
2498 struct formatter<basic_string<char, _Traits, _Allocator>, wchar_t>
2499 :
private formatter<__format::__disabled, wchar_t> { };
2500 template<
class _Traits>
2501 struct formatter<basic_string_view<char, _Traits>, wchar_t>
2502 :
private formatter<__format::__disabled, wchar_t> { };
2508 template<
typename _Tp,
typename _Context,
2510 =
typename _Context::template formatter_type<remove_const_t<_Tp>>,
2511 typename _ParseContext
2512 = basic_format_parse_context<typename _Context::char_type>>
2513 concept __parsable_with
2514 = semiregular<_Formatter>
2515 &&
requires (_Formatter __f, _ParseContext __pc)
2517 { __f.parse(__pc) } -> same_as<typename _ParseContext::iterator>;
2520 template<
typename _Tp,
typename _Context,
2522 =
typename _Context::template formatter_type<remove_const_t<_Tp>>,
2523 typename _ParseContext
2524 = basic_format_parse_context<typename _Context::char_type>>
2525 concept __formattable_with
2526 = semiregular<_Formatter>
2527 &&
requires (
const _Formatter __cf, _Tp&& __t, _Context __fc)
2529 { __cf.format(__t, __fc) } -> same_as<typename _Context::iterator>;
2533 template<
typename _CharT>
2534 using _Iter_for = back_insert_iterator<basic_string<_CharT>>;
2536 template<
typename _Tp,
typename _CharT,
2537 typename _Context = basic_format_context<_Iter_for<_CharT>, _CharT>>
2538 concept __formattable_impl
2539 = __parsable_with<_Tp, _Context> && __formattable_with<_Tp, _Context>;
2544#if __cplusplus > 202002L
2546 template<
typename _Tp,
typename _CharT>
2548 = __format::__formattable_impl<remove_reference_t<_Tp>, _CharT>;
2551#if __cpp_lib_format_ranges
2555 template<
typename _Rg,
typename _CharT>
2556 concept __const_formattable_range
2557 = ranges::input_range<const _Rg>
2558 && formattable<ranges::range_reference_t<const _Rg>, _CharT>;
2560 template<
typename _Rg,
typename _CharT>
2561 using __maybe_const_range
2562 = conditional_t<__const_formattable_range<_Rg, _CharT>,
const _Rg, _Rg>;
2569 template<
typename _Out>
2570 struct format_to_n_result
2573 iter_difference_t<_Out>
size;
2576_GLIBCXX_BEGIN_NAMESPACE_CONTAINER
2577template<
typename,
typename>
class vector;
2578_GLIBCXX_END_NAMESPACE_CONTAINER
2583 template<
typename _CharT>
2586 _Sink<_CharT>* _M_sink =
nullptr;
2589 using iterator_category = output_iterator_tag;
2590 using value_type = void;
2591 using difference_type = ptrdiff_t;
2592 using pointer = void;
2593 using reference = void;
2595 _Sink_iter() =
default;
2596 _Sink_iter(
const _Sink_iter&) =
default;
2597 _Sink_iter& operator=(
const _Sink_iter&) =
default;
2599 [[__gnu__::__always_inline__]]
2601 _Sink_iter(_Sink<_CharT>& __sink) : _M_sink(
std::
addressof(__sink)) { }
2603 [[__gnu__::__always_inline__]]
2604 constexpr _Sink_iter&
2605 operator=(_CharT __c)
2607 _M_sink->_M_write(__c);
2611 [[__gnu__::__always_inline__]]
2612 constexpr _Sink_iter&
2613 operator=(basic_string_view<_CharT> __s)
2615 _M_sink->_M_write(__s);
2619 [[__gnu__::__always_inline__]]
2620 constexpr _Sink_iter&
2623 [[__gnu__::__always_inline__]]
2624 constexpr _Sink_iter&
2625 operator++() {
return *
this; }
2627 [[__gnu__::__always_inline__]]
2628 constexpr _Sink_iter
2629 operator++(
int) {
return *
this; }
2632 _M_reserve(
size_t __n)
const
2633 {
return _M_sink->_M_reserve(__n); }
2639 template<
typename _CharT>
2642 friend class _Sink_iter<_CharT>;
2644 span<_CharT> _M_span;
2645 typename span<_CharT>::iterator _M_next;
2651 virtual void _M_overflow() = 0;
2655 [[__gnu__::__always_inline__]]
2657 _Sink(span<_CharT> __span) noexcept
2658 : _M_span(__span), _M_next(__span.begin())
2662 [[__gnu__::__always_inline__]]
2664 _M_used() const noexcept
2665 {
return _M_span.first(_M_next - _M_span.begin()); }
2668 [[__gnu__::__always_inline__]]
2669 constexpr span<_CharT>
2670 _M_unused() const noexcept
2671 {
return _M_span.subspan(_M_next - _M_span.begin()); }
2674 [[__gnu__::__always_inline__]]
2676 _M_rewind() noexcept
2677 { _M_next = _M_span.begin(); }
2681 _M_reset(span<_CharT> __s,
size_t __pos = 0) noexcept
2684 _M_next = __s.begin() + __pos;
2689 _M_write(_CharT __c)
2692 if (_M_next - _M_span.begin() == std::ssize(_M_span)) [[unlikely]]
2697 _M_write(basic_string_view<_CharT> __s)
2699 span __to = _M_unused();
2700 while (__to.size() <= __s.size())
2702 __s.copy(__to.data(), __to.size());
2703 _M_next += __to.size();
2704 __s.remove_prefix(__to.size());
2710 __s.copy(__to.data(), __s.size());
2711 _M_next += __s.size();
2720 explicit operator bool() const noexcept {
return _M_sink; }
2722 _CharT* get() const noexcept {
return _M_sink->_M_next.operator->(); }
2724 void _M_bump(
size_t __n) { _M_sink->_M_bump(__n); }
2732 virtual _Reservation
2733 _M_reserve(
size_t __n)
2735 if (__n <= _M_unused().
size())
2738 if (__n <= _M_span.size())
2741 if (__n <= _M_unused().
size())
2754 _Sink(
const _Sink&) =
delete;
2755 _Sink& operator=(
const _Sink&) =
delete;
2757 [[__gnu__::__always_inline__]]
2758 constexpr _Sink_iter<_CharT>
2760 {
return _Sink_iter<_CharT>(*
this); }
2764 template<
typename _CharT>
2765 class _Buf_sink :
public _Sink<_CharT>
2768 _CharT _M_buf[32 *
sizeof(
void*) /
sizeof(_CharT)];
2770 [[__gnu__::__always_inline__]]
2772 _Buf_sink() noexcept
2773 : _Sink<_CharT>(_M_buf)
2777 using _GLIBCXX_STD_C::vector;
2781 template<
typename _Seq>
2782 class _Seq_sink final :
public _Buf_sink<typename _Seq::value_type>
2784 using _CharT =
typename _Seq::value_type;
2790 _M_overflow()
override
2792 auto __s = this->_M_used();
2793 if (__s.empty()) [[unlikely]]
2797 _GLIBCXX_DEBUG_ASSERT(__s.data() != _M_seq.data());
2799 if constexpr (__is_specialization_of<_Seq, basic_string>)
2800 _M_seq.append(__s.data(), __s.size());
2802 _M_seq.insert(_M_seq.end(), __s.begin(), __s.end());
2808 typename _Sink<_CharT>::_Reservation
2809 _M_reserve(
size_t __n)
override
2818 if constexpr (__is_specialization_of<_Seq, basic_string>
2819 || __is_specialization_of<_Seq, vector>)
2822 if (this->_M_used().size()) [[unlikely]]
2823 _Seq_sink::_M_overflow();
2826 const auto __sz = _M_seq.size();
2827 if constexpr (is_same_v<string, _Seq> || is_same_v<wstring, _Seq>)
2828 _M_seq.__resize_and_overwrite(__sz + __n,
2829 [](
auto,
auto __n2) {
2833 _M_seq.resize(__sz + __n);
2837 this->_M_reset(_M_seq, __sz);
2841 return _Sink<_CharT>::_M_reserve(__n);
2845 _M_bump(
size_t __n)
override
2847 if constexpr (__is_specialization_of<_Seq, basic_string>
2848 || __is_specialization_of<_Seq, vector>)
2850 auto __s = this->_M_used();
2851 _GLIBCXX_DEBUG_ASSERT(__s.data() == _M_seq.data());
2853 _M_seq.resize(__s.size() + __n);
2855 this->_M_reset(this->_M_buf);
2863 [[__gnu__::__always_inline__]]
2864 _Seq_sink() noexcept(is_nothrow_default_constructible_v<_Seq>)
2867 _Seq_sink(_Seq&& __s)
noexcept(is_nothrow_move_constructible_v<_Seq>)
2871 using _Sink<_CharT>::out;
2876 if (this->_M_used().
size() != 0)
2877 _Seq_sink::_M_overflow();
2886 auto __s = this->_M_used();
2889 if (__s.size() != 0)
2890 _Seq_sink::_M_overflow();
2897 template<
typename _CharT,
typename _Alloc = allocator<_CharT>>
2899 = _Seq_sink<basic_string<_CharT, char_traits<_CharT>, _Alloc>>;
2907 template<
typename _CharT,
typename _OutIter>
2908 class _Iter_sink :
public _Buf_sink<_CharT>
2911 iter_difference_t<_OutIter> _M_max;
2914 size_t _M_count = 0;
2917 _M_overflow()
override
2919 auto __s = this->_M_used();
2921 _M_out = ranges::copy(__s,
std::move(_M_out)).out;
2922 else if (_M_count <
static_cast<size_t>(_M_max))
2924 auto __max = _M_max - _M_count;
2925 span<_CharT> __first;
2926 if (__max < __s.size())
2927 __first = __s.first(
static_cast<size_t>(__max));
2930 _M_out = ranges::copy(__first,
std::move(_M_out)).out;
2933 _M_count += __s.size();
2937 [[__gnu__::__always_inline__]]
2939 _Iter_sink(_OutIter __out, iter_difference_t<_OutIter> __max = -1)
2940 : _M_out(
std::
move(__out)), _M_max(__max)
2943 using _Sink<_CharT>::out;
2945 format_to_n_result<_OutIter>
2948 if (this->_M_used().
size() != 0)
2949 _Iter_sink::_M_overflow();
2950 iter_difference_t<_OutIter> __count(_M_count);
2962 template<
typename _CharT, contiguous_iterator _OutIter>
2963 requires same_as<iter_value_t<_OutIter>, _CharT>
2964 class _Iter_sink<_CharT, _OutIter> :
public _Sink<_CharT>
2967 iter_difference_t<_OutIter> _M_max = -1;
2969 size_t _M_count = 0;
2975 _M_overflow()
override
2977 if (this->_M_unused().
size() != 0)
2980 auto __s = this->_M_used();
2984 _M_count += __s.size();
2988 this->_M_reset(this->_M_buf);
2994 this->_M_reset({__s.data(), __s.size() + 1024}, __s.size());
2998 typename _Sink<_CharT>::_Reservation
2999 _M_reserve(
size_t __n)
final
3001 auto __avail = this->_M_unused();
3002 if (__n > __avail.size())
3007 auto __s = this->_M_used();
3008 this->_M_reset({__s.data(), __s.size() + __n}, __s.size());
3015 _S_make_span(_CharT* __ptr, iter_difference_t<_OutIter> __n,
3016 span<_CharT> __buf)
noexcept
3023 if constexpr (!is_integral_v<iter_difference_t<_OutIter>>
3024 ||
sizeof(__n) >
sizeof(
size_t))
3027 auto __m = iter_difference_t<_OutIter>((
size_t)-1);
3031 return {__ptr, (size_t)__n};
3034#if __has_builtin(__builtin_dynamic_object_size)
3035 if (
size_t __bytes = __builtin_dynamic_object_size(__ptr, 2))
3036 return {__ptr, __bytes /
sizeof(_CharT)};
3039 const auto __off =
reinterpret_cast<__UINTPTR_TYPE__
>(__ptr) % 1024;
3040 __n = (1024 - __off) /
sizeof(_CharT);
3041 if (__n > 0) [[likely]]
3042 return {__ptr,
static_cast<size_t>(__n)};
3049 _Iter_sink(_OutIter __out, iter_difference_t<_OutIter> __n = -1) noexcept
3050 : _Sink<_CharT>(_S_make_span(
std::to_address(__out), __n, _M_buf)),
3051 _M_first(__out), _M_max(__n)
3054 format_to_n_result<_OutIter>
3057 auto __s = this->_M_used();
3058 if (__s.data() == _M_buf)
3061 iter_difference_t<_OutIter> __count(_M_count + __s.size());
3062 return { _M_first + _M_max, __count };
3066 iter_difference_t<_OutIter> __count(__s.size());
3067 return { _M_first + __count, __count };
3072 enum _Arg_t :
unsigned char {
3073 _Arg_none, _Arg_bool, _Arg_c, _Arg_i, _Arg_u, _Arg_ll, _Arg_ull,
3074 _Arg_flt, _Arg_dbl, _Arg_ldbl, _Arg_str, _Arg_sv, _Arg_ptr, _Arg_handle,
3075 _Arg_i128, _Arg_u128,
3076 _Arg_bf16, _Arg_f16, _Arg_f32, _Arg_f64,
3077#ifdef _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT
3079 _Arg_f128 = _Arg_ldbl,
3080 _Arg_ibm128 = _Arg_next_value_,
3087 template<
typename _Context>
3090 using _CharT =
typename _Context::char_type;
3106 unsigned long long _M_ull;
3109#ifndef _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT
3110 long double _M_ldbl;
3112 const _CharT* _M_str;
3113 basic_string_view<_CharT> _M_sv;
3115 _HandleBase _M_handle;
3116#ifdef __SIZEOF_INT128__
3118 unsigned __int128 _M_u128;
3120#ifdef _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT
3123#elif _GLIBCXX_FORMAT_F128 == 2
3124 __float128_t _M_f128;
3128 [[__gnu__::__always_inline__]]
3129 _Arg_value() : _M_none() { }
3132 template<
typename _Tp>
3133 _Arg_value(in_place_type_t<_Tp>, _Tp __val)
3134 { _S_get<_Tp>() = __val; }
3137 template<
typename _Tp,
typename _Self>
3138 [[__gnu__::__always_inline__]]
3140 _S_get(_Self& __u)
noexcept
3142 if constexpr (is_same_v<_Tp, bool>)
3144 else if constexpr (is_same_v<_Tp, _CharT>)
3146 else if constexpr (is_same_v<_Tp, int>)
3148 else if constexpr (is_same_v<_Tp, unsigned>)
3150 else if constexpr (is_same_v<_Tp, long long>)
3152 else if constexpr (is_same_v<_Tp, unsigned long long>)
3154 else if constexpr (is_same_v<_Tp, float>)
3156 else if constexpr (is_same_v<_Tp, double>)
3158#ifndef _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT
3159 else if constexpr (is_same_v<_Tp, long double>)
3162 else if constexpr (is_same_v<_Tp, __ieee128>)
3164 else if constexpr (is_same_v<_Tp, __ibm128>)
3165 return __u._M_ibm128;
3167 else if constexpr (is_same_v<_Tp, const _CharT*>)
3169 else if constexpr (is_same_v<_Tp, basic_string_view<_CharT>>)
3171 else if constexpr (is_same_v<_Tp, const void*>)
3173#ifdef __SIZEOF_INT128__
3174 else if constexpr (is_same_v<_Tp, __int128>)
3176 else if constexpr (is_same_v<_Tp, unsigned __int128>)
3179#if _GLIBCXX_FORMAT_F128 == 2
3180 else if constexpr (is_same_v<_Tp, __float128_t>)
3183 else if constexpr (derived_from<_Tp, _HandleBase>)
3184 return static_cast<_Tp&
>(__u._M_handle);
3188 template<
typename _Tp>
3189 [[__gnu__::__always_inline__]]
3192 {
return _S_get<_Tp>(*
this); }
3194 template<
typename _Tp>
3195 [[__gnu__::__always_inline__]]
3197 _M_get() const noexcept
3198 {
return _S_get<_Tp>(*
this); }
3200 template<
typename _Tp>
3201 [[__gnu__::__always_inline__]]
3203 _M_set(_Tp __v)
noexcept
3205 if constexpr (derived_from<_Tp, _HandleBase>)
3206 std::construct_at(&_M_handle, __v);
3208 _S_get<_Tp>(*
this) = __v;
3213 template<
typename _Context,
typename... _Args>
3219 template<
typename _Context>
3220 class basic_format_arg
3222 using _CharT =
typename _Context::char_type;
3224 template<
typename _Tp>
3225 static constexpr bool __formattable
3226 = __format::__formattable_with<_Tp, _Context>;
3229 class handle :
public __format::_Arg_value<_Context>::_HandleBase
3231 using _Base =
typename __format::_Arg_value<_Context>::_HandleBase;
3234 template<
typename _Tp>
3235 using __maybe_const_t
3236 = __conditional_t<__formattable<const _Tp>,
const _Tp, _Tp>;
3238 template<
typename _Tq>
3240 _S_format(basic_format_parse_context<_CharT>& __parse_ctx,
3241 _Context& __format_ctx,
const void* __ptr)
3243 using _Td = remove_const_t<_Tq>;
3244 typename _Context::template formatter_type<_Td> __f;
3245 __parse_ctx.advance_to(__f.parse(__parse_ctx));
3246 _Tq& __val = *
const_cast<_Tq*
>(
static_cast<const _Td*
>(__ptr));
3247 __format_ctx.advance_to(__f.format(__val, __format_ctx));
3250 template<
typename _Tp>
3252 handle(_Tp& __val)
noexcept
3254 this->_M_ptr = __builtin_addressof(__val);
3255 auto __func = _S_format<__maybe_const_t<_Tp>>;
3256 this->_M_func =
reinterpret_cast<void(*)()
>(__func);
3259 friend class basic_format_arg<_Context>;
3262 handle(
const handle&) =
default;
3263 handle& operator=(
const handle&) =
default;
3265 [[__gnu__::__always_inline__]]
3267 format(basic_format_parse_context<_CharT>& __pc, _Context& __fc)
const
3269 using _Func = void(*)(basic_format_parse_context<_CharT>&,
3270 _Context&,
const void*);
3271 auto __f =
reinterpret_cast<_Func
>(this->_M_func);
3272 __f(__pc, __fc, this->_M_ptr);
3276 [[__gnu__::__always_inline__]]
3277 basic_format_arg() noexcept : _M_type(__format::_Arg_none) { }
3279 [[nodiscard,__gnu__::__always_inline__]]
3280 explicit operator bool() const noexcept
3281 {
return _M_type != __format::_Arg_none; }
3284 template<
typename _Ctx>
3285 friend class basic_format_args;
3287 template<
typename _Ctx,
typename... _Args>
3288 friend class __format::_Arg_store;
3290 static_assert(is_trivially_copyable_v<__format::_Arg_value<_Context>>);
3292 __format::_Arg_value<_Context> _M_val;
3293 __format::_Arg_t _M_type;
3298 template<
typename _Tp>
3299 static consteval auto
3302 using _Td = remove_const_t<_Tp>;
3303 if constexpr (is_same_v<_Td, bool>)
3304 return type_identity<bool>();
3305 else if constexpr (is_same_v<_Td, _CharT>)
3306 return type_identity<_CharT>();
3307 else if constexpr (is_same_v<_Td, char> && is_same_v<_CharT, wchar_t>)
3308 return type_identity<_CharT>();
3309#ifdef __SIZEOF_INT128__
3310 else if constexpr (is_same_v<_Td, __int128>)
3311 return type_identity<__int128>();
3312 else if constexpr (is_same_v<_Td, unsigned __int128>)
3313 return type_identity<unsigned __int128>();
3315 else if constexpr (__is_signed_integer<_Td>::value)
3317 if constexpr (
sizeof(_Td) <=
sizeof(
int))
3318 return type_identity<int>();
3319 else if constexpr (
sizeof(_Td) <=
sizeof(
long long))
3320 return type_identity<long long>();
3322 else if constexpr (__is_unsigned_integer<_Td>::value)
3324 if constexpr (
sizeof(_Td) <=
sizeof(
unsigned))
3325 return type_identity<unsigned>();
3326 else if constexpr (
sizeof(_Td) <=
sizeof(
unsigned long long))
3327 return type_identity<unsigned long long>();
3329 else if constexpr (is_same_v<_Td, float>)
3330 return type_identity<float>();
3331 else if constexpr (is_same_v<_Td, double>)
3332 return type_identity<double>();
3333#ifndef _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT
3334 else if constexpr (is_same_v<_Td, long double>)
3335 return type_identity<long double>();
3337 else if constexpr (is_same_v<_Td, __ibm128>)
3338 return type_identity<__ibm128>();
3339 else if constexpr (is_same_v<_Td, __ieee128>)
3340 return type_identity<__ieee128>();
3343#if defined(__FLT16_DIG__) && defined(_GLIBCXX_FLOAT_IS_IEEE_BINARY32)
3344 else if constexpr (is_same_v<_Td, _Float16>)
3345 return type_identity<float>();
3348#if defined(__BFLT16_DIG__) && defined(_GLIBCXX_FLOAT_IS_IEEE_BINARY32)
3349 else if constexpr (is_same_v<_Td,
decltype(0.0bf16)>)
3350 return type_identity<float>();
3354 else if constexpr (is_same_v<_Td, _Float32>)
3355# ifdef _GLIBCXX_FLOAT_IS_IEEE_BINARY32
3356 return type_identity<float>();
3358 return type_identity<_Float32>();
3362 else if constexpr (is_same_v<_Td, _Float64>)
3363# ifdef _GLIBCXX_DOUBLE_IS_IEEE_BINARY64
3364 return type_identity<double>();
3366 return type_identity<_Float64>();
3369#if _GLIBCXX_FORMAT_F128
3371 else if constexpr (is_same_v<_Td, _Float128>)
3372 return type_identity<__format::__float128_t>();
3374# if __SIZEOF_FLOAT128__
3375 else if constexpr (is_same_v<_Td, __float128>)
3376 return type_identity<__format::__float128_t>();
3379 else if constexpr (__is_specialization_of<_Td, basic_string_view>
3380 || __is_specialization_of<_Td, basic_string>)
3382 if constexpr (is_same_v<typename _Td::value_type, _CharT>)
3383 return type_identity<basic_string_view<_CharT>>();
3385 return type_identity<handle>();
3387 else if constexpr (is_same_v<decay_t<_Td>,
const _CharT*>)
3388 return type_identity<const _CharT*>();
3389 else if constexpr (is_same_v<decay_t<_Td>, _CharT*>)
3390 return type_identity<const _CharT*>();
3391 else if constexpr (is_void_v<remove_pointer_t<_Td>>)
3392 return type_identity<const void*>();
3393 else if constexpr (is_same_v<_Td, nullptr_t>)
3394 return type_identity<const void*>();
3396 return type_identity<handle>();
3400 template<
typename _Tp>
3401 using _Normalize =
typename decltype(_S_to_arg_type<_Tp>())::type;
3404 template<
typename _Tp>
3405 static consteval __format::_Arg_t
3408 using namespace __format;
3409 if constexpr (is_same_v<_Tp, bool>)
3411 else if constexpr (is_same_v<_Tp, _CharT>)
3413 else if constexpr (is_same_v<_Tp, int>)
3415 else if constexpr (is_same_v<_Tp, unsigned>)
3417 else if constexpr (is_same_v<_Tp, long long>)
3419 else if constexpr (is_same_v<_Tp, unsigned long long>)
3421 else if constexpr (is_same_v<_Tp, float>)
3423 else if constexpr (is_same_v<_Tp, double>)
3425#ifndef _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT
3426 else if constexpr (is_same_v<_Tp, long double>)
3430 else if constexpr (is_same_v<_Tp, __ibm128>)
3432 else if constexpr (is_same_v<_Tp, __ieee128>)
3435 else if constexpr (is_same_v<_Tp, const _CharT*>)
3437 else if constexpr (is_same_v<_Tp, basic_string_view<_CharT>>)
3439 else if constexpr (is_same_v<_Tp, const void*>)
3441#ifdef __SIZEOF_INT128__
3442 else if constexpr (is_same_v<_Tp, __int128>)
3444 else if constexpr (is_same_v<_Tp, unsigned __int128>)
3450#if defined __FLT32_DIG__ && ! _GLIBCXX_FLOAT_IS_IEEE_BINARY32
3451 else if constexpr (is_same_v<_Tp, _Float32>)
3454#if defined __FLT64_DIG__ && ! _GLIBCXX_DOUBLE_IS_IEEE_BINARY64
3455 else if constexpr (is_same_v<_Tp, _Float64>)
3458#if _GLIBCXX_FORMAT_F128 == 2
3459 else if constexpr (is_same_v<_Tp, __format::__float128_t>)
3462 else if constexpr (is_same_v<_Tp, handle>)
3466 template<
typename _Tp>
3468 _M_set(_Tp __v)
noexcept
3470 _M_type = _S_to_enum<_Tp>();
3474 template<
typename _Tp>
3475 requires __format::__formattable_with<_Tp, _Context>
3477 basic_format_arg(_Tp& __v)
noexcept
3479 using _Td = _Normalize<_Tp>;
3480 if constexpr (is_same_v<_Td, basic_string_view<_CharT>>)
3481 _M_set(_Td{__v.data(), __v.size()});
3482 else if constexpr (is_same_v<remove_const_t<_Tp>,
char>
3483 && is_same_v<_CharT, wchar_t>)
3484 _M_set(
static_cast<_Td
>(
static_cast<unsigned char>(__v)));
3486 _M_set(
static_cast<_Td
>(__v));
3489 template<
typename _Ctx,
typename... _Argz>
3491 make_format_args(_Argz&...)
noexcept;
3493 template<
typename _Visitor,
typename _Ctx>
3494 friend decltype(
auto)
3495 visit_format_arg(_Visitor&& __vis, basic_format_arg<_Ctx>);
3497 template<
typename _Visitor>
3499 _M_visit(_Visitor&& __vis, __format::_Arg_t __type)
3501 using namespace __format;
3505 return std::forward<_Visitor>(__vis)(_M_val._M_none);
3507 return std::forward<_Visitor>(__vis)(_M_val._M_bool);
3509 return std::forward<_Visitor>(__vis)(_M_val._M_c);
3511 return std::forward<_Visitor>(__vis)(_M_val._M_i);
3513 return std::forward<_Visitor>(__vis)(_M_val._M_u);
3515 return std::forward<_Visitor>(__vis)(_M_val._M_ll);
3517 return std::forward<_Visitor>(__vis)(_M_val._M_ull);
3518#if __glibcxx_to_chars
3520 return std::forward<_Visitor>(__vis)(_M_val._M_flt);
3522 return std::forward<_Visitor>(__vis)(_M_val._M_dbl);
3523#ifndef _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT
3525 return std::forward<_Visitor>(__vis)(_M_val._M_ldbl);
3528 return std::forward<_Visitor>(__vis)(_M_val._M_f128);
3530 return std::forward<_Visitor>(__vis)(_M_val._M_ibm128);
3534 return std::forward<_Visitor>(__vis)(_M_val._M_str);
3536 return std::forward<_Visitor>(__vis)(_M_val._M_sv);
3538 return std::forward<_Visitor>(__vis)(_M_val._M_ptr);
3541 auto& __h =
static_cast<handle&
>(_M_val._M_handle);
3542 return std::forward<_Visitor>(__vis)(__h);
3544#ifdef __SIZEOF_INT128__
3546 return std::forward<_Visitor>(__vis)(_M_val._M_i128);
3548 return std::forward<_Visitor>(__vis)(_M_val._M_u128);
3551#if _GLIBCXX_FORMAT_F128 == 2
3553 return std::forward<_Visitor>(__vis)(_M_val._M_f128);
3558 __builtin_unreachable();
3563 template<
typename _Visitor,
typename _Context>
3564 inline decltype(
auto)
3565 visit_format_arg(_Visitor&& __vis, basic_format_arg<_Context> __arg)
3567 return __arg._M_visit(std::forward<_Visitor>(__vis), __arg._M_type);
3573 struct _WidthPrecVisitor
3575 template<
typename _Tp>
3577 operator()(_Tp& __arg)
const
3579 if constexpr (is_same_v<_Tp, monostate>)
3580 __format::__invalid_arg_id_in_format_string();
3584 else if constexpr (
sizeof(_Tp) <=
sizeof(
long long))
3588 if constexpr (__is_unsigned_integer<_Tp>::value)
3590 else if constexpr (__is_signed_integer<_Tp>::value)
3594 __throw_format_error(
"format error: argument used for width or "
3595 "precision must be a non-negative integer");
3599 template<
typename _Context>
3601 __int_from_arg(
const basic_format_arg<_Context>& __arg)
3602 {
return std::visit_format_arg(_WidthPrecVisitor(), __arg); }
3605 template<
int _Bits,
size_t _Nm>
3607 __pack_arg_types(
const array<_Arg_t, _Nm>& __types)
3609 __UINT64_TYPE__ __packed_types = 0;
3610 for (
auto __i = __types.rbegin(); __i != __types.rend(); ++__i)
3611 __packed_types = (__packed_types << _Bits) | *__i;
3612 return __packed_types;
3617 template<
typename _Context>
3618 class basic_format_args
3620 static constexpr int _S_packed_type_bits = 5;
3621 static constexpr int _S_packed_type_mask = 0b11111;
3622 static constexpr int _S_max_packed_args = 12;
3624 static_assert( __format::_Arg_max_ <= (1 << _S_packed_type_bits) );
3626 template<
typename... _Args>
3627 using _Store = __format::_Arg_store<_Context, _Args...>;
3629 template<
typename _Ctx,
typename... _Args>
3630 friend class __format::_Arg_store;
3632 using uint64_t = __UINT64_TYPE__;
3633 using _Format_arg = basic_format_arg<_Context>;
3634 using _Format_arg_val = __format::_Arg_value<_Context>;
3640 uint64_t _M_packed_size : 4;
3641 uint64_t _M_unpacked_size : 60;
3644 const _Format_arg_val* _M_values;
3645 const _Format_arg* _M_args;
3649 _M_size() const noexcept
3650 {
return _M_packed_size ? _M_packed_size : _M_unpacked_size; }
3652 typename __format::_Arg_t
3653 _M_type(
size_t __i)
const noexcept
3655 uint64_t __t = _M_unpacked_size >> (__i * _S_packed_type_bits);
3656 return static_cast<__format::_Arg_t
>(__t & _S_packed_type_mask);
3659 template<
typename _Ctx,
typename... _Args>
3661 make_format_args(_Args&...)
noexcept;
3664 template<
typename... _Args>
3665 static consteval array<__format::_Arg_t,
sizeof...(_Args)>
3667 {
return {_Format_arg::template _S_to_enum<_Args>()...}; }
3670 basic_format_args() noexcept = default;
3672 template<typename... _Args>
3673 basic_format_args(const _Store<_Args...>& __store) noexcept;
3675 [[nodiscard,__gnu__::__always_inline__]]
3676 basic_format_arg<_Context>
3677 get(
size_t __i) const noexcept
3679 basic_format_arg<_Context> __arg;
3680 if (__i < _M_packed_size)
3682 __arg._M_type = _M_type(__i);
3683 __arg._M_val = _M_values[__i];
3685 else if (_M_packed_size == 0 && __i < _M_unpacked_size)
3686 __arg = _M_args[__i];
3693 template<
typename _Context,
typename... _Args>
3694 basic_format_args(__format::_Arg_store<_Context, _Args...>)
3695 -> basic_format_args<_Context>;
3697 template<
typename _Context,
typename... _Args>
3699 make_format_args(_Args&... __fmt_args)
noexcept;
3702 template<
typename _Context,
typename... _Args>
3703 class __format::_Arg_store
3705 friend std::basic_format_args<_Context>;
3707 template<
typename _Ctx,
typename... _Argz>
3709#if _GLIBCXX_INLINE_VERSION
3712 make_format_args(_Argz&...)
noexcept;
3716 static constexpr bool _S_values_only
3717 =
sizeof...(_Args) <= basic_format_args<_Context>::_S_max_packed_args;
3720 = __conditional_t<_S_values_only,
3721 __format::_Arg_value<_Context>,
3722 basic_format_arg<_Context>>;
3724 _Element_t _M_args[
sizeof...(_Args)];
3726 template<
typename _Tp>
3728 _S_make_elt(_Tp& __v)
3730 using _Tq = remove_const_t<_Tp>;
3731 using _CharT =
typename _Context::char_type;
3732 static_assert(is_default_constructible_v<formatter<_Tq, _CharT>>,
3733 "std::formatter must be specialized for the type "
3734 "of each format arg");
3735 using __format::__formattable_with;
3736 if constexpr (is_const_v<_Tp>)
3737 if constexpr (!__formattable_with<_Tp, _Context>)
3738 if constexpr (__formattable_with<_Tq, _Context>)
3739 static_assert(__formattable_with<_Tp, _Context>,
3740 "format arg must be non-const because its "
3741 "std::formatter specialization has a "
3742 "non-const reference parameter");
3743 basic_format_arg<_Context> __arg(__v);
3744 if constexpr (_S_values_only)
3745 return __arg._M_val;
3750 template<
typename... _Tp>
3751 requires (
sizeof...(_Tp) ==
sizeof...(_Args))
3752 [[__gnu__::__always_inline__]]
3753 _Arg_store(_Tp&... __a) noexcept
3754 : _M_args{_S_make_elt(__a)...}
3758 template<
typename _Context>
3759 class __format::_Arg_store<_Context>
3762 template<
typename _Context>
3763 template<
typename... _Args>
3765 basic_format_args<_Context>::
3766 basic_format_args(
const _Store<_Args...>& __store)
noexcept
3768 if constexpr (
sizeof...(_Args) == 0)
3771 _M_unpacked_size = 0;
3774 else if constexpr (
sizeof...(_Args) <= _S_max_packed_args)
3777 _M_packed_size =
sizeof...(_Args);
3780 = __format::__pack_arg_types<_S_packed_type_bits>(_S_types_to_pack<_Args...>());
3782 _M_values = __store._M_args;
3789 _M_unpacked_size =
sizeof...(_Args);
3791 _M_args = __store._M_args;
3796 template<
typename _Context = format_context,
typename... _Args>
3797 [[nodiscard,__gnu__::__always_inline__]]
3799 make_format_args(_Args&... __fmt_args)
noexcept
3801 using _Fmt_arg = basic_format_arg<_Context>;
3802 using _Store = __format::_Arg_store<_Context,
typename _Fmt_arg::template
3803 _Normalize<_Args>...>;
3804 return _Store(__fmt_args...);
3807#ifdef _GLIBCXX_USE_WCHAR_T
3809 template<
typename... _Args>
3810 [[nodiscard,__gnu__::__always_inline__]]
3812 make_wformat_args(_Args&... __args)
noexcept
3813 {
return std::make_format_args<wformat_context>(__args...); }
3819 template<
typename _Out,
typename _CharT,
typename _Context>
3821 __do_vformat_to(_Out, basic_string_view<_CharT>,
3822 const basic_format_args<_Context>&,
3823 const locale* =
nullptr);
3835 template<
typename _Out,
typename _CharT>
3836 class basic_format_context
3838 static_assert( output_iterator<_Out, const _CharT&> );
3840 basic_format_args<basic_format_context> _M_args;
3842 __format::_Optional_locale _M_loc;
3844 basic_format_context(basic_format_args<basic_format_context> __args,
3846 : _M_args(__args), _M_out(
std::
move(__out))
3849 basic_format_context(basic_format_args<basic_format_context> __args,
3851 : _M_args(__args), _M_out(
std::
move(__out)), _M_loc(__loc)
3854 template<
typename _Out2,
typename _CharT2,
typename _Context2>
3856 __format::__do_vformat_to(_Out2, basic_string_view<_CharT2>,
3857 const basic_format_args<_Context2>&,
3861 basic_format_context() =
default;
3862 ~basic_format_context() =
default;
3864 using iterator = _Out;
3865 using char_type = _CharT;
3866 template<
typename _Tp>
3867 using formatter_type = formatter<_Tp, _CharT>;
3870 basic_format_arg<basic_format_context>
3871 arg(
size_t __id)
const noexcept
3872 {
return _M_args.get(__id); }
3878 iterator out() {
return std::move(_M_out); }
3880 void advance_to(iterator __it) { _M_out =
std::move(__it); }
3892 template<
typename _CharT>
3895 using iterator =
typename basic_format_parse_context<_CharT>::iterator;
3897 basic_format_parse_context<_CharT> _M_pc;
3900 _Scanner(basic_string_view<_CharT> __str,
size_t __nargs = -1)
3901 : _M_pc(__str, __nargs)
3904 constexpr iterator
begin() const noexcept {
return _M_pc.begin(); }
3905 constexpr iterator
end() const noexcept {
return _M_pc.end(); }
3910 basic_string_view<_CharT> __fmt = _M_fmt_str();
3912 if (__fmt.size() == 2 && __fmt[0] ==
'{' && __fmt[1] ==
'}')
3914 _M_pc.advance_to(
begin() + 1);
3915 _M_format_arg(_M_pc.next_arg_id());
3919 size_t __lbr = __fmt.find(
'{');
3920 size_t __rbr = __fmt.find(
'}');
3922 while (__fmt.size())
3924 auto __cmp = __lbr <=> __rbr;
3928 _M_pc.advance_to(
end());
3933 if (__lbr + 1 == __fmt.size()
3934 || (__rbr == __fmt.npos && __fmt[__lbr + 1] !=
'{'))
3935 __format::__unmatched_left_brace_in_format_string();
3936 const bool __is_escape = __fmt[__lbr + 1] ==
'{';
3937 iterator __last =
begin() + __lbr + int(__is_escape);
3938 _M_on_chars(__last);
3939 _M_pc.advance_to(__last + 1);
3940 __fmt = _M_fmt_str();
3943 if (__rbr != __fmt.npos)
3945 __lbr = __fmt.find(
'{');
3949 _M_on_replacement_field();
3950 __fmt = _M_fmt_str();
3951 __lbr = __fmt.find(
'{');
3952 __rbr = __fmt.find(
'}');
3957 if (++__rbr == __fmt.size() || __fmt[__rbr] !=
'}')
3958 __format::__unmatched_right_brace_in_format_string();
3959 iterator __last =
begin() + __rbr;
3960 _M_on_chars(__last);
3961 _M_pc.advance_to(__last + 1);
3962 __fmt = _M_fmt_str();
3963 if (__lbr != __fmt.npos)
3965 __rbr = __fmt.find(
'}');
3970 constexpr basic_string_view<_CharT>
3971 _M_fmt_str() const noexcept
3974 constexpr virtual void _M_on_chars(iterator) { }
3976 constexpr void _M_on_replacement_field()
3978 auto __next =
begin();
3982 __id = _M_pc.next_arg_id();
3983 else if (*__next ==
':')
3985 __id = _M_pc.next_arg_id();
3986 _M_pc.advance_to(++__next);
3990 auto [__i, __ptr] = __format::__parse_arg_id(
begin(),
end());
3991 if (!__ptr || !(*__ptr ==
'}' || *__ptr ==
':'))
3992 __format::__invalid_arg_id_in_format_string();
3993 _M_pc.check_arg_id(__id = __i);
3996 _M_pc.advance_to(++__ptr);
3999 _M_pc.advance_to(__ptr);
4001 _M_format_arg(__id);
4003 __format::__unmatched_left_brace_in_format_string();
4004 _M_pc.advance_to(
begin() + 1);
4007 constexpr virtual void _M_format_arg(
size_t __id) = 0;
4011 template<
typename _Out,
typename _CharT>
4012 class _Formatting_scanner :
public _Scanner<_CharT>
4015 _Formatting_scanner(basic_format_context<_Out, _CharT>& __fc,
4016 basic_string_view<_CharT> __str)
4017 : _Scanner<_CharT>(__str), _M_fc(__fc)
4021 basic_format_context<_Out, _CharT>& _M_fc;
4023 using iterator =
typename _Scanner<_CharT>::iterator;
4026 _M_on_chars(iterator __last)
override
4028 basic_string_view<_CharT> __str(this->
begin(), __last);
4029 _M_fc.advance_to(__format::__write(_M_fc.out(), __str));
4033 _M_format_arg(
size_t __id)
override
4035 using _Context = basic_format_context<_Out, _CharT>;
4036 using handle =
typename basic_format_arg<_Context>::handle;
4038 std::visit_format_arg([
this](
auto& __arg) {
4040 using _Formatter =
typename _Context::template formatter_type<_Type>;
4041 if constexpr (is_same_v<_Type, monostate>)
4042 __format::__invalid_arg_id_in_format_string();
4043 else if constexpr (is_same_v<_Type, handle>)
4044 __arg.format(this->_M_pc, this->_M_fc);
4045 else if constexpr (is_default_constructible_v<_Formatter>)
4048 this->_M_pc.advance_to(__f.parse(this->_M_pc));
4049 this->_M_fc.advance_to(__f.format(__arg, this->_M_fc));
4052 static_assert(__format::__formattable_with<_Type, _Context>);
4053 }, _M_fc.arg(__id));
4058 template<
typename _CharT,
typename... _Args>
4059 class _Checking_scanner :
public _Scanner<_CharT>
4062 (is_default_constructible_v<formatter<_Args, _CharT>> && ...),
4063 "std::formatter must be specialized for each type being formatted");
4067 _Checking_scanner(basic_string_view<_CharT> __str)
4068 : _Scanner<_CharT>(__str, sizeof...(_Args))
4073 _M_format_arg(
size_t __id)
override
4075 if constexpr (
sizeof...(_Args) != 0)
4077 if (__id <
sizeof...(_Args))
4079 _M_parse_format_spec<_Args...>(__id);
4083 __builtin_unreachable();
4086 template<
typename _Tp,
typename... _OtherArgs>
4088 _M_parse_format_spec(
size_t __id)
4092 formatter<_Tp, _CharT> __f;
4093 this->_M_pc.advance_to(__f.parse(this->_M_pc));
4095 else if constexpr (
sizeof...(_OtherArgs) != 0)
4096 _M_parse_format_spec<_OtherArgs...>(__id - 1);
4098 __builtin_unreachable();
4102 template<
typename _Out,
typename _CharT,
typename _Context>
4104 __do_vformat_to(_Out __out, basic_string_view<_CharT> __fmt,
4105 const basic_format_args<_Context>& __args,
4106 const locale* __loc)
4108 _Iter_sink<_CharT, _Out> __sink(
std::move(__out));
4109 _Sink_iter<_CharT> __sink_out;
4111 if constexpr (is_same_v<_Out, _Sink_iter<_CharT>>)
4114 __sink_out = __sink.out();
4116 if constexpr (is_same_v<_CharT, char>)
4118 if (__fmt.size() == 2 && __fmt[0] ==
'{' && __fmt[1] ==
'}')
4120 bool __done =
false;
4121 std::visit_format_arg([&](
auto& __arg) {
4122 using _Tp = remove_cvref_t<
decltype(__arg)>;
4123 if constexpr (is_same_v<_Tp, bool>)
4125 size_t __len = 4 + !__arg;
4126 const char* __chars[] = {
"false",
"true" };
4127 if (
auto __res = __sink_out._M_reserve(__len))
4129 __builtin_memcpy(__res.get(), __chars[__arg], __len);
4130 __res._M_bump(__len);
4134 else if constexpr (is_same_v<_Tp, char>)
4136 if (
auto __res = __sink_out._M_reserve(1))
4138 *__res.get() = __arg;
4143 else if constexpr (is_integral_v<_Tp>)
4145 make_unsigned_t<_Tp> __uval;
4146 const bool __neg = __arg < 0;
4148 __uval = make_unsigned_t<_Tp>(~__arg) + 1u;
4151 const auto __n = __detail::__to_chars_len(__uval);
4152 if (
auto __res = __sink_out._M_reserve(__n + __neg))
4154 auto __ptr = __res.get();
4156 __detail::__to_chars_10_impl(__ptr + (
int)__neg, __n,
4158 __res._M_bump(__n + __neg);
4162 else if constexpr (is_convertible_v<_Tp, string_view>)
4164 string_view __sv = __arg;
4165 if (
auto __res = __sink_out._M_reserve(__sv.size()))
4167 __builtin_memcpy(__res.get(), __sv.data(), __sv.size());
4168 __res._M_bump(__sv.size());
4176 if constexpr (is_same_v<_Out, _Sink_iter<_CharT>>)
4179 return std::move(__sink)._M_finish().out;
4183 auto __ctx = __loc ==
nullptr
4184 ? _Context(__args, __sink_out)
4185 : _Context(__args, __sink_out, *__loc);
4186 _Formatting_scanner<_Sink_iter<_CharT>, _CharT> __scanner(__ctx, __fmt);
4187 __scanner._M_scan();
4189 if constexpr (is_same_v<_Out, _Sink_iter<_CharT>>)
4192 return std::move(__sink)._M_finish().out;
4198 template<
typename _CharT,
typename... _Args>
4199 template<
typename _Tp>
4200 requires convertible_to<const _Tp&, basic_string_view<_CharT>>
4202 basic_format_string<_CharT, _Args...>::
4203 basic_format_string(
const _Tp& __s)
4206 __format::_Checking_scanner<_CharT, remove_cvref_t<_Args>...>
4208 __scanner._M_scan();
4213 template<
typename _Out>
requires output_iterator<_Out, const char&>
4214 [[__gnu__::__always_inline__]]
4216 vformat_to(_Out __out, string_view __fmt, format_args __args)
4217 {
return __format::__do_vformat_to(
std::move(__out), __fmt, __args); }
4219#ifdef _GLIBCXX_USE_WCHAR_T
4220 template<
typename _Out>
requires output_iterator<_Out, const wchar_t&>
4221 [[__gnu__::__always_inline__]]
4223 vformat_to(_Out __out, wstring_view __fmt, wformat_args __args)
4224 {
return __format::__do_vformat_to(
std::move(__out), __fmt, __args); }
4227 template<
typename _Out>
requires output_iterator<_Out, const char&>
4228 [[__gnu__::__always_inline__]]
4230 vformat_to(_Out __out,
const locale& __loc, string_view __fmt,
4233 return __format::__do_vformat_to(
std::move(__out), __fmt, __args, &__loc);
4236#ifdef _GLIBCXX_USE_WCHAR_T
4237 template<
typename _Out>
requires output_iterator<_Out, const wchar_t&>
4238 [[__gnu__::__always_inline__]]
4240 vformat_to(_Out __out,
const locale& __loc, wstring_view __fmt,
4241 wformat_args __args)
4243 return __format::__do_vformat_to(
std::move(__out), __fmt, __args, &__loc);
4249 vformat(string_view __fmt, format_args __args)
4251 __format::_Str_sink<char> __buf;
4252 std::vformat_to(__buf.out(), __fmt, __args);
4256#ifdef _GLIBCXX_USE_WCHAR_T
4259 vformat(wstring_view __fmt, wformat_args __args)
4261 __format::_Str_sink<wchar_t> __buf;
4262 std::vformat_to(__buf.out(), __fmt, __args);
4269 vformat(
const locale& __loc, string_view __fmt, format_args __args)
4271 __format::_Str_sink<char> __buf;
4272 std::vformat_to(__buf.out(), __loc, __fmt, __args);
4276#ifdef _GLIBCXX_USE_WCHAR_T
4279 vformat(
const locale& __loc, wstring_view __fmt, wformat_args __args)
4281 __format::_Str_sink<wchar_t> __buf;
4282 std::vformat_to(__buf.out(), __loc, __fmt, __args);
4287 template<
typename... _Args>
4290 format(format_string<_Args...> __fmt, _Args&&... __args)
4291 {
return std::vformat(__fmt.get(), std::make_format_args(__args...)); }
4293#ifdef _GLIBCXX_USE_WCHAR_T
4294 template<
typename... _Args>
4297 format(wformat_string<_Args...> __fmt, _Args&&... __args)
4298 {
return std::vformat(__fmt.get(), std::make_wformat_args(__args...)); }
4301 template<
typename... _Args>
4304 format(
const locale& __loc, format_string<_Args...> __fmt,
4307 return std::vformat(__loc, __fmt.get(),
4308 std::make_format_args(__args...));
4311#ifdef _GLIBCXX_USE_WCHAR_T
4312 template<
typename... _Args>
4315 format(
const locale& __loc, wformat_string<_Args...> __fmt,
4318 return std::vformat(__loc, __fmt.get(),
4319 std::make_wformat_args(__args...));
4323 template<
typename _Out,
typename... _Args>
4324 requires output_iterator<_Out, const char&>
4326 format_to(_Out __out, format_string<_Args...> __fmt, _Args&&... __args)
4328 return std::vformat_to(
std::move(__out), __fmt.get(),
4329 std::make_format_args(__args...));
4332#ifdef _GLIBCXX_USE_WCHAR_T
4333 template<
typename _Out,
typename... _Args>
4334 requires output_iterator<_Out, const wchar_t&>
4336 format_to(_Out __out, wformat_string<_Args...> __fmt, _Args&&... __args)
4338 return std::vformat_to(
std::move(__out), __fmt.get(),
4339 std::make_wformat_args(__args...));
4343 template<
typename _Out,
typename... _Args>
4344 requires output_iterator<_Out, const char&>
4346 format_to(_Out __out,
const locale& __loc, format_string<_Args...> __fmt,
4349 return std::vformat_to(
std::move(__out), __loc, __fmt.get(),
4350 std::make_format_args(__args...));
4353#ifdef _GLIBCXX_USE_WCHAR_T
4354 template<
typename _Out,
typename... _Args>
4355 requires output_iterator<_Out, const wchar_t&>
4357 format_to(_Out __out,
const locale& __loc, wformat_string<_Args...> __fmt,
4360 return std::vformat_to(
std::move(__out), __loc, __fmt.get(),
4361 std::make_wformat_args(__args...));
4365 template<
typename _Out,
typename... _Args>
4366 requires output_iterator<_Out, const char&>
4367 inline format_to_n_result<_Out>
4368 format_to_n(_Out __out, iter_difference_t<_Out> __n,
4369 format_string<_Args...> __fmt, _Args&&... __args)
4371 __format::_Iter_sink<char, _Out> __sink(
std::move(__out), __n);
4372 std::vformat_to(__sink.out(), __fmt.get(),
4373 std::make_format_args(__args...));
4377#ifdef _GLIBCXX_USE_WCHAR_T
4378 template<
typename _Out,
typename... _Args>
4379 requires output_iterator<_Out, const wchar_t&>
4380 inline format_to_n_result<_Out>
4381 format_to_n(_Out __out, iter_difference_t<_Out> __n,
4382 wformat_string<_Args...> __fmt, _Args&&... __args)
4384 __format::_Iter_sink<wchar_t, _Out> __sink(
std::move(__out), __n);
4385 std::vformat_to(__sink.out(), __fmt.get(),
4386 std::make_wformat_args(__args...));
4391 template<
typename _Out,
typename... _Args>
4392 requires output_iterator<_Out, const char&>
4393 inline format_to_n_result<_Out>
4394 format_to_n(_Out __out, iter_difference_t<_Out> __n,
const locale& __loc,
4395 format_string<_Args...> __fmt, _Args&&... __args)
4397 __format::_Iter_sink<char, _Out> __sink(
std::move(__out), __n);
4398 std::vformat_to(__sink.out(), __loc, __fmt.get(),
4399 std::make_format_args(__args...));
4403#ifdef _GLIBCXX_USE_WCHAR_T
4404 template<
typename _Out,
typename... _Args>
4405 requires output_iterator<_Out, const wchar_t&>
4406 inline format_to_n_result<_Out>
4407 format_to_n(_Out __out, iter_difference_t<_Out> __n,
const locale& __loc,
4408 wformat_string<_Args...> __fmt, _Args&&... __args)
4410 __format::_Iter_sink<wchar_t, _Out> __sink(
std::move(__out), __n);
4411 std::vformat_to(__sink.out(), __loc, __fmt.get(),
4412 std::make_wformat_args(__args...));
4421 template<
typename _CharT>
4422 class _Counting_sink final :
public _Iter_sink<_CharT, _CharT*>
4425 _Counting_sink() : _Iter_sink<_CharT, _CharT*>(nullptr, 0) { }
4427 [[__gnu__::__always_inline__]]
4430 {
return this->_M_count + this->_M_used().size(); }
4433 template<
typename _CharT>
4434 class _Counting_sink :
public _Buf_sink<_CharT>
4436 size_t _M_count = 0;
4439 _M_overflow()
override
4441 if (!std::is_constant_evaluated())
4442 _M_count += this->_M_used().size();
4447 _Counting_sink() =
default;
4449 [[__gnu__::__always_inline__]]
4453 _Counting_sink::_M_overflow();
4461 template<
typename... _Args>
4464 formatted_size(format_string<_Args...> __fmt, _Args&&... __args)
4466 __format::_Counting_sink<char> __buf;
4467 std::vformat_to(__buf.out(), __fmt.get(),
4468 std::make_format_args(__args...));
4469 return __buf.count();
4472#ifdef _GLIBCXX_USE_WCHAR_T
4473 template<
typename... _Args>
4476 formatted_size(wformat_string<_Args...> __fmt, _Args&&... __args)
4478 __format::_Counting_sink<wchar_t> __buf;
4479 std::vformat_to(__buf.out(), __fmt.get(),
4480 std::make_wformat_args(__args...));
4481 return __buf.count();
4485 template<
typename... _Args>
4488 formatted_size(
const locale& __loc, format_string<_Args...> __fmt,
4491 __format::_Counting_sink<char> __buf;
4492 std::vformat_to(__buf.out(), __loc, __fmt.get(),
4493 std::make_format_args(__args...));
4494 return __buf.count();
4497#ifdef _GLIBCXX_USE_WCHAR_T
4498 template<
typename... _Args>
4501 formatted_size(
const locale& __loc, wformat_string<_Args...> __fmt,
4504 __format::_Counting_sink<wchar_t> __buf;
4505 std::vformat_to(__buf.out(), __loc, __fmt.get(),
4506 std::make_wformat_args(__args...));
4507 return __buf.count();
4511#if __cpp_lib_format_ranges
4514 enum class range_format {
4524 template<
typename _Rg>
4525 constexpr auto format_kind = not defined(format_kind<_Rg>);
4527 template<
typename _Tp>
4528 consteval range_format
4531 using _Ref = ranges::range_reference_t<_Tp>;
4532 if constexpr (is_same_v<remove_cvref_t<_Ref>, _Tp>)
4533 return range_format::disabled;
4534 else if constexpr (
requires {
typename _Tp::key_type; })
4536 if constexpr (
requires {
typename _Tp::mapped_type; })
4538 using _Up = remove_cvref_t<_Ref>;
4539 if constexpr (__is_pair<_Up>)
4540 return range_format::map;
4541 else if constexpr (__is_specialization_of<_Up, tuple>)
4542 if constexpr (tuple_size_v<_Up> == 2)
4543 return range_format::map;
4545 return range_format::set;
4548 return range_format::sequence;
4553 template<ranges::input_range _Rg>
requires same_as<_Rg, remove_cvref_t<_Rg>>
4554 constexpr range_format format_kind<_Rg> = __fmt_kind<_Rg>();
4557 template<
typename _Tp,
typename _CharT =
char>
4558 requires same_as<remove_cvref_t<_Tp>, _Tp> && formattable<_Tp, _CharT>
4559 class range_formatter;
4565 template<range_format _Kind, ranges::input_range _Rg,
typename _CharT>
4566 struct __range_default_formatter;
4572 template<ranges::input_range _Rg,
typename _CharT>
4573 requires (format_kind<_Rg> != range_format::disabled)
4574 && formattable<ranges::range_reference_t<_Rg>, _CharT>
4575 struct formatter<_Rg, _CharT>
4576 : __format::__range_default_formatter<format_kind<_Rg>, _Rg, _CharT>
4580_GLIBCXX_END_NAMESPACE_VERSION
constexpr complex< _Tp > operator*(const complex< _Tp > &__x, const complex< _Tp > &__y)
Return new complex value x times y.
_Tp arg(const complex< _Tp > &)
Return phase angle of z.
typename remove_reference< _Tp >::type remove_reference_t
Alias template for remove_reference.
typename make_unsigned< _Tp >::type make_unsigned_t
Alias template for make_unsigned.
constexpr _Tp * addressof(_Tp &__r) noexcept
Returns the actual address of the object or function referenced by r, even in the presence of an over...
constexpr std::remove_reference< _Tp >::type && move(_Tp &&__t) noexcept
Convert a value to an rvalue.
_Tp * end(valarray< _Tp > &__va) noexcept
Return an iterator pointing to one past the last element of the valarray.
_Tp * begin(valarray< _Tp > &__va) noexcept
Return an iterator pointing to the first element of the valarray.
basic_string< char > string
A string of char.
basic_string< wchar_t > wstring
A string of wchar_t.
ISO C++ entities toplevel namespace is std.
chars_format
floating-point format for primitive numerical conversion
_CharT toupper(_CharT __c, const locale &__loc)
Convenience interface to ctype.toupper(__c).
constexpr auto size(const _Container &__cont) noexcept(noexcept(__cont.size())) -> decltype(__cont.size())
Return the size of a container.
GNU extensions for public use.
__numeric_traits_integer< _Tp > __int_traits
Convenience alias for __numeric_traits<integer-type>.
const _CharT * data() const noexcept
Return const pointer to contents.
void __resize_and_overwrite(size_type __n, _Operation __op)
Non-standard version of resize_and_overwrite for C++11 and above.
basic_string substr(size_type __pos=0, size_type __n=npos) const
Get a substring.
void reserve(size_type __res_arg)
Attempt to preallocate enough memory for specified number of characters.
void insert(iterator __p, size_type __n, _CharT __c)
Insert multiple characters.
size_type size() const noexcept
Returns the number of characters in the string, not including any null-termination.
basic_string & append(const basic_string &__str)
Append a string to this string.
bool empty() const noexcept
size_type capacity() const noexcept
Container class for localization functionality.