1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_FORMAT 11#define _LIBCPP_FORMAT 12 13/* 14 15namespace std { 16 // [format.context], class template basic_format_context 17 template<class Out, class charT> class basic_format_context; 18 using format_context = basic_format_context<unspecified, char>; 19 using wformat_context = basic_format_context<unspecified, wchar_t>; 20 21 // [format.args], class template basic_format_args 22 template<class Context> class basic_format_args; 23 using format_args = basic_format_args<format_context>; 24 using wformat_args = basic_format_args<wformat_context>; 25 26 // [format.fmt.string], class template basic-format-string 27 template<class charT, class... Args> 28 struct basic-format-string; // exposition only 29 30 template<class... Args> 31 using format-string = // exposition only 32 basic-format-string<char, type_identity_t<Args>...>; 33 template<class... Args> 34 using wformat-string = // exposition only 35 basic-format-string<wchar_t, type_identity_t<Args>...>; 36 37 // [format.functions], formatting functions 38 template<class... Args> 39 string format(format-string<Args...> fmt, const Args&... args); 40 template<class... Args> 41 wstring format(wformat-string<Args...> fmt, const Args&... args); 42 template<class... Args> 43 string format(const locale& loc, format-string<Args...> fmt, const Args&... args); 44 template<class... Args> 45 wstring format(const locale& loc, wformat-string<Args...> fmt, const Args&... args); 46 47 string vformat(string_view fmt, format_args args); 48 wstring vformat(wstring_view fmt, wformat_args args); 49 string vformat(const locale& loc, string_view fmt, format_args args); 50 wstring vformat(const locale& loc, wstring_view fmt, wformat_args args); 51 52 template<class Out, class... Args> 53 Out format_to(Out out, format-string<Args...> fmt, const Args&... args); 54 template<class Out, class... Args> 55 Out format_to(Out out, wformat-string<Args...> fmt, const Args&... args); 56 template<class Out, class... Args> 57 Out format_to(Out out, const locale& loc, format-string<Args...> fmt, const Args&... args); 58 template<class Out, class... Args> 59 Out format_to(Out out, const locale& loc, wformat-string<Args...> fmt, const Args&... args); 60 61 template<class Out> 62 Out vformat_to(Out out, string_view fmt, format_args args); 63 template<class Out> 64 Out vformat_to(Out out, wstring_view fmt, wformat_args args); 65 template<class Out> 66 Out vformat_to(Out out, const locale& loc, string_view fmt, 67 format_args char> args); 68 template<class Out> 69 Out vformat_to(Out out, const locale& loc, wstring_view fmt, 70 wformat_args args); 71 72 template<class Out> struct format_to_n_result { 73 Out out; 74 iter_difference_t<Out> size; 75 }; 76 template<class Out, class... Args> 77 format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n, 78 format-string<Args...> fmt, const Args&... args); 79 template<class Out, class... Args> 80 format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n, 81 wformat-string<Args...> fmt, const Args&... args); 82 template<class Out, class... Args> 83 format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n, 84 const locale& loc, format-string<Args...> fmt, 85 const Args&... args); 86 template<class Out, class... Args> 87 format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n, 88 const locale& loc, wformat-string<Args...> fmt, 89 const Args&... args); 90 91 template<class... Args> 92 size_t formatted_size(format-string<Args...> fmt, const Args&... args); 93 template<class... Args> 94 size_t formatted_size(wformat-string<Args...> fmt, const Args&... args); 95 template<class... Args> 96 size_t formatted_size(const locale& loc, format-string<Args...> fmt, const Args&... args); 97 template<class... Args> 98 size_t formatted_size(const locale& loc, wformat-string<Args...> fmt, const Args&... args); 99 100 // [format.formatter], formatter 101 template<class T, class charT = char> struct formatter; 102 103 // [format.parse.ctx], class template basic_format_parse_context 104 template<class charT> class basic_format_parse_context; 105 using format_parse_context = basic_format_parse_context<char>; 106 using wformat_parse_context = basic_format_parse_context<wchar_t>; 107 108 // [format.arguments], arguments 109 // [format.arg], class template basic_format_arg 110 template<class Context> class basic_format_arg; 111 112 template<class Visitor, class Context> 113 see below visit_format_arg(Visitor&& vis, basic_format_arg<Context> arg); 114 115 // [format.arg.store], class template format-arg-store 116 template<class Context, class... Args> struct format-arg-store; // exposition only 117 118 template<class Context = format_context, class... Args> 119 format-arg-store<Context, Args...> 120 make_format_args(const Args&... args); 121 template<class... Args> 122 format-arg-store<wformat_context, Args...> 123 make_wformat_args(const Args&... args); 124 125 // [format.error], class format_error 126 class format_error; 127} 128 129*/ 130 131#include <__assert> // all public C++ headers provide the assertion handler 132// Make sure all feature-test macros are available. 133#include <version> 134// Enable the contents of the header only when libc++ was built with LIBCXX_ENABLE_INCOMPLETE_FEATURES. 135#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT) 136 137#include <__algorithm/clamp.h> 138#include <__config> 139#include <__debug> 140#include <__format/buffer.h> 141#include <__format/concepts.h> 142#include <__format/enable_insertable.h> 143#include <__format/format_arg.h> 144#include <__format/format_arg_store.h> 145#include <__format/format_args.h> 146#include <__format/format_context.h> 147#include <__format/format_error.h> 148#include <__format/format_fwd.h> 149#include <__format/format_parse_context.h> 150#include <__format/format_string.h> 151#include <__format/format_to_n_result.h> 152#include <__format/formatter.h> 153#include <__format/formatter_bool.h> 154#include <__format/formatter_char.h> 155#include <__format/formatter_floating_point.h> 156#include <__format/formatter_integer.h> 157#include <__format/formatter_pointer.h> 158#include <__format/formatter_string.h> 159#include <__format/parser_std_format_spec.h> 160#include <__iterator/back_insert_iterator.h> 161#include <__iterator/incrementable_traits.h> 162#include <__variant/monostate.h> 163#include <array> 164#include <concepts> 165#include <string> 166#include <string_view> 167#include <type_traits> 168 169#ifndef _LIBCPP_HAS_NO_LOCALIZATION 170#include <locale> 171#endif 172 173#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 174# pragma GCC system_header 175#endif 176 177_LIBCPP_BEGIN_NAMESPACE_STD 178 179#if _LIBCPP_STD_VER > 17 180 181// TODO FMT Move the implementation in this file to its own granular headers. 182 183// TODO FMT Evaluate which templates should be external templates. This 184// improves the efficiency of the header. However since the header is still 185// under heavy development and not all classes are stable it makes no sense 186// to do this optimization now. 187 188using format_args = basic_format_args<format_context>; 189#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 190using wformat_args = basic_format_args<wformat_context>; 191#endif 192 193// TODO FMT This helper wrapper can probably be removed after P2418 has been 194// implemented. 195template <class _Context, class... _Args> 196_LIBCPP_HIDE_FROM_ABI __format_arg_store<_Context, _Args...> 197__make_format_args(_Args&&... __args) { 198 return _VSTD::__format_arg_store<_Context, _Args...>( 199 _VSTD::forward<_Args>(__args)...); 200} 201 202// TODO FMT After P2418 specify the return type instead of using auto. 203template <class _Context = format_context, class... _Args> 204_LIBCPP_HIDE_FROM_ABI auto make_format_args(const _Args&... __args) { 205 return _VSTD::__make_format_args<_Context>(__args...); 206} 207 208#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 209// TODO FMT After P2418 specify the return type instead of using auto. 210template <class... _Args> 211_LIBCPP_HIDE_FROM_ABI auto make_wformat_args(const _Args&... __args) { 212 return _VSTD::make_format_args<wformat_context>(__args...); 213} 214#endif 215 216namespace __format { 217 218/// Helper class parse and handle argument. 219/// 220/// When parsing a handle which is not enabled the code is ill-formed. 221/// This helper uses the parser of the appropriate formatter for the stored type. 222template <class _CharT> 223class _LIBCPP_TEMPLATE_VIS __compile_time_handle { 224public: 225 _LIBCPP_HIDE_FROM_ABI 226 constexpr void __parse(basic_format_parse_context<_CharT>& __parse_ctx) const { __parse_(__parse_ctx); } 227 228 template <class _Tp> 229 _LIBCPP_HIDE_FROM_ABI constexpr void __enable() { 230 __parse_ = [](basic_format_parse_context<_CharT>& __parse_ctx) { 231 formatter<_Tp, _CharT> __f; 232 __parse_ctx.advance_to(__f.parse(__parse_ctx)); 233 }; 234 } 235 236 // Before calling __parse the proper handler needs to be set with __enable. 237 // The default handler isn't a core constant expression. 238 _LIBCPP_HIDE_FROM_ABI constexpr __compile_time_handle() 239 : __parse_([](basic_format_parse_context<_CharT>&) { __throw_format_error("Not a handle"); }) {} 240 241private: 242 void (*__parse_)(basic_format_parse_context<_CharT>&); 243}; 244 245// Dummy format_context only providing the parts used during constant 246// validation of the basic-format-string. 247template <class _CharT> 248struct _LIBCPP_TEMPLATE_VIS __compile_time_basic_format_context { 249public: 250 using char_type = _CharT; 251 252 _LIBCPP_HIDE_FROM_ABI constexpr explicit __compile_time_basic_format_context( 253 const __arg_t* __args, const __compile_time_handle<_CharT>* __handles, size_t __size) 254 : __args_(__args), __handles_(__handles), __size_(__size) {} 255 256 // During the compile-time validation nothing needs to be written. 257 // Therefore all operations of this iterator are a NOP. 258 struct iterator { 259 _LIBCPP_HIDE_FROM_ABI constexpr iterator& operator=(_CharT) { return *this; } 260 _LIBCPP_HIDE_FROM_ABI constexpr iterator& operator*() { return *this; } 261 _LIBCPP_HIDE_FROM_ABI constexpr iterator operator++(int) { return *this; } 262 }; 263 264 _LIBCPP_HIDE_FROM_ABI constexpr __arg_t arg(size_t __id) const { 265 if (__id >= __size_) 266 __throw_format_error("Argument index out of bounds"); 267 return __args_[__id]; 268 } 269 270 _LIBCPP_HIDE_FROM_ABI constexpr const __compile_time_handle<_CharT>& __handle(size_t __id) const { 271 if (__id >= __size_) 272 __throw_format_error("Argument index out of bounds"); 273 return __handles_[__id]; 274 } 275 276 _LIBCPP_HIDE_FROM_ABI constexpr iterator out() { return {}; } 277 _LIBCPP_HIDE_FROM_ABI constexpr void advance_to(iterator) {} 278 279private: 280 const __arg_t* __args_; 281 const __compile_time_handle<_CharT>* __handles_; 282 size_t __size_; 283}; 284 285_LIBCPP_HIDE_FROM_ABI 286constexpr void __compile_time_validate_integral(__arg_t __type) { 287 switch (__type) { 288 case __arg_t::__int: 289 case __arg_t::__long_long: 290 case __arg_t::__i128: 291 case __arg_t::__unsigned: 292 case __arg_t::__unsigned_long_long: 293 case __arg_t::__u128: 294 return; 295 296 default: 297 __throw_format_error("Argument isn't an integral type"); 298 } 299} 300 301// _HasPrecision does the formatter have a precision? 302template <class _CharT, class _Tp, bool _HasPrecision = false> 303_LIBCPP_HIDE_FROM_ABI constexpr void 304__compile_time_validate_argument(basic_format_parse_context<_CharT>& __parse_ctx, 305 __compile_time_basic_format_context<_CharT>& __ctx) { 306 formatter<_Tp, _CharT> __formatter; 307 __parse_ctx.advance_to(__formatter.parse(__parse_ctx)); 308 // [format.string.std]/7 309 // ... If the corresponding formatting argument is not of integral type, or 310 // its value is negative for precision or non-positive for width, an 311 // exception of type format_error is thrown. 312 // 313 // Validate whether the arguments are integrals. 314 if constexpr (requires(formatter<_Tp, _CharT> __f) { __f.__width_needs_substitution(); }) { 315 // TODO FMT Remove this when parser v1 has been phased out. 316 if (__formatter.__width_needs_substitution()) 317 __format::__compile_time_validate_integral(__ctx.arg(__formatter.__width)); 318 319 if constexpr (_HasPrecision) 320 if (__formatter.__precision_needs_substitution()) 321 __format::__compile_time_validate_integral(__ctx.arg(__formatter.__precision)); 322 } else { 323 if (__formatter.__parser_.__width_as_arg_) 324 __format::__compile_time_validate_integral(__ctx.arg(__formatter.__parser_.__width_)); 325 326 if constexpr (_HasPrecision) 327 if (__formatter.__parser_.__precision_as_arg_) 328 __format::__compile_time_validate_integral(__ctx.arg(__formatter.__parser_.__precision_)); 329 } 330} 331 332template <class _CharT> 333_LIBCPP_HIDE_FROM_ABI constexpr void __compile_time_visit_format_arg(basic_format_parse_context<_CharT>& __parse_ctx, 334 __compile_time_basic_format_context<_CharT>& __ctx, 335 __arg_t __type) { 336 switch (__type) { 337 case __arg_t::__none: 338 __throw_format_error("Invalid argument"); 339 case __arg_t::__boolean: 340 return __format::__compile_time_validate_argument<_CharT, bool>(__parse_ctx, __ctx); 341 case __arg_t::__char_type: 342 return __format::__compile_time_validate_argument<_CharT, _CharT>(__parse_ctx, __ctx); 343 case __arg_t::__int: 344 return __format::__compile_time_validate_argument<_CharT, int>(__parse_ctx, __ctx); 345 case __arg_t::__long_long: 346 return __format::__compile_time_validate_argument<_CharT, long long>(__parse_ctx, __ctx); 347 case __arg_t::__i128: 348# ifndef _LIBCPP_HAS_NO_INT128 349 return __format::__compile_time_validate_argument<_CharT, __int128_t>(__parse_ctx, __ctx); 350# else 351 __throw_format_error("Invalid argument"); 352# endif 353 return; 354 case __arg_t::__unsigned: 355 return __format::__compile_time_validate_argument<_CharT, unsigned>(__parse_ctx, __ctx); 356 case __arg_t::__unsigned_long_long: 357 return __format::__compile_time_validate_argument<_CharT, unsigned long long>(__parse_ctx, __ctx); 358 case __arg_t::__u128: 359# ifndef _LIBCPP_HAS_NO_INT128 360 return __format::__compile_time_validate_argument<_CharT, __uint128_t>(__parse_ctx, __ctx); 361# else 362 __throw_format_error("Invalid argument"); 363# endif 364 return; 365 case __arg_t::__float: 366 return __format::__compile_time_validate_argument<_CharT, float, true>(__parse_ctx, __ctx); 367 case __arg_t::__double: 368 return __format::__compile_time_validate_argument<_CharT, double, true>(__parse_ctx, __ctx); 369 case __arg_t::__long_double: 370 return __format::__compile_time_validate_argument<_CharT, long double, true>(__parse_ctx, __ctx); 371 case __arg_t::__const_char_type_ptr: 372 return __format::__compile_time_validate_argument<_CharT, const _CharT*, true>(__parse_ctx, __ctx); 373 case __arg_t::__string_view: 374 return __format::__compile_time_validate_argument<_CharT, basic_string_view<_CharT>, true>(__parse_ctx, __ctx); 375 case __arg_t::__ptr: 376 return __format::__compile_time_validate_argument<_CharT, const void*>(__parse_ctx, __ctx); 377 case __arg_t::__handle: 378 __throw_format_error("Handle should use __compile_time_validate_handle_argument"); 379 } 380 __throw_format_error("Invalid argument"); 381} 382 383template <class _CharT, class _ParseCtx, class _Ctx> 384_LIBCPP_HIDE_FROM_ABI constexpr const _CharT* 385__handle_replacement_field(const _CharT* __begin, const _CharT* __end, 386 _ParseCtx& __parse_ctx, _Ctx& __ctx) { 387 __format::__parse_number_result __r = 388 __format::__parse_arg_id(__begin, __end, __parse_ctx); 389 390 switch (*__r.__ptr) { 391 case _CharT(':'): 392 // The arg-id has a format-specifier, advance the input to the format-spec. 393 __parse_ctx.advance_to(__r.__ptr + 1); 394 break; 395 case _CharT('}'): 396 // The arg-id has no format-specifier. 397 __parse_ctx.advance_to(__r.__ptr); 398 break; 399 default: 400 __throw_format_error( 401 "The replacement field arg-id should terminate at a ':' or '}'"); 402 } 403 404 if constexpr (same_as<_Ctx, __compile_time_basic_format_context<_CharT>>) { 405 __arg_t __type = __ctx.arg(__r.__value); 406 if (__type == __arg_t::__handle) 407 __ctx.__handle(__r.__value).__parse(__parse_ctx); 408 else 409 __format::__compile_time_visit_format_arg(__parse_ctx, __ctx, __type); 410 } else 411 _VSTD::visit_format_arg( 412 [&](auto __arg) { 413 if constexpr (same_as<decltype(__arg), monostate>) 414 __throw_format_error("Argument index out of bounds"); 415 else if constexpr (same_as<decltype(__arg), typename basic_format_arg<_Ctx>::handle>) 416 __arg.format(__parse_ctx, __ctx); 417 else { 418 formatter<decltype(__arg), _CharT> __formatter; 419 __parse_ctx.advance_to(__formatter.parse(__parse_ctx)); 420 __ctx.advance_to(__formatter.format(__arg, __ctx)); 421 } 422 }, 423 __ctx.arg(__r.__value)); 424 425 __begin = __parse_ctx.begin(); 426 if (__begin == __end || *__begin != _CharT('}')) 427 __throw_format_error("The replacement field misses a terminating '}'"); 428 429 return ++__begin; 430} 431 432template <class _ParseCtx, class _Ctx> 433_LIBCPP_HIDE_FROM_ABI constexpr typename _Ctx::iterator 434__vformat_to(_ParseCtx&& __parse_ctx, _Ctx&& __ctx) { 435 using _CharT = typename _ParseCtx::char_type; 436 static_assert(same_as<typename _Ctx::char_type, _CharT>); 437 438 const _CharT* __begin = __parse_ctx.begin(); 439 const _CharT* __end = __parse_ctx.end(); 440 typename _Ctx::iterator __out_it = __ctx.out(); 441 while (__begin != __end) { 442 switch (*__begin) { 443 case _CharT('{'): 444 ++__begin; 445 if (__begin == __end) 446 __throw_format_error("The format string terminates at a '{'"); 447 448 if (*__begin != _CharT('{')) [[likely]] { 449 __ctx.advance_to(_VSTD::move(__out_it)); 450 __begin = 451 __handle_replacement_field(__begin, __end, __parse_ctx, __ctx); 452 __out_it = __ctx.out(); 453 454 // The output is written and __begin points to the next character. So 455 // start the next iteration. 456 continue; 457 } 458 // The string is an escape character. 459 break; 460 461 case _CharT('}'): 462 ++__begin; 463 if (__begin == __end || *__begin != _CharT('}')) 464 __throw_format_error( 465 "The format string contains an invalid escape sequence"); 466 467 break; 468 } 469 470 // Copy the character to the output verbatim. 471 *__out_it++ = *__begin++; 472 } 473 return __out_it; 474} 475 476} // namespace __format 477 478template <class _CharT, class... _Args> 479struct _LIBCPP_TEMPLATE_VIS __basic_format_string { 480 basic_string_view<_CharT> __str_; 481 482 template <class _Tp> 483 requires convertible_to<const _Tp&, basic_string_view<_CharT>> 484 consteval __basic_format_string(const _Tp& __str) : __str_{__str} { 485 __format::__vformat_to(basic_format_parse_context<_CharT>{__str_, sizeof...(_Args)}, 486 _Context{__types_.data(), __handles_.data(), sizeof...(_Args)}); 487 } 488 489private: 490 using _Context = __format::__compile_time_basic_format_context<_CharT>; 491 492 static constexpr array<__format::__arg_t, sizeof...(_Args)> __types_{ 493 __format::__determine_arg_t<_Context, remove_cvref_t<_Args>>()...}; 494 495 // TODO FMT remove this work-around when the AIX ICE has been resolved. 496# if defined(_AIX) && defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 1400 497 template <class _Tp> 498 static constexpr __format::__compile_time_handle<_CharT> __get_handle() { 499 __format::__compile_time_handle<_CharT> __handle; 500 if (__format::__determine_arg_t<_Context, _Tp>() == __format::__arg_t::__handle) 501 __handle.template __enable<_Tp>(); 502 503 return __handle; 504 } 505 506 static constexpr array<__format::__compile_time_handle<_CharT>, sizeof...(_Args)> __handles_{ 507 __get_handle<_Args>()...}; 508# else 509 static constexpr array<__format::__compile_time_handle<_CharT>, sizeof...(_Args)> __handles_{[] { 510 using _Tp = remove_cvref_t<_Args>; 511 __format::__compile_time_handle<_CharT> __handle; 512 if (__format::__determine_arg_t<_Context, _Tp>() == __format::__arg_t::__handle) 513 __handle.template __enable<_Tp>(); 514 515 return __handle; 516 }()...}; 517# endif 518}; 519 520template <class... _Args> 521using __format_string_t = __basic_format_string<char, type_identity_t<_Args>...>; 522 523#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 524template <class... _Args> 525using __wformat_string_t = __basic_format_string<wchar_t, type_identity_t<_Args>...>; 526#endif 527 528template <class _OutIt, class _CharT, class _FormatOutIt> 529requires(output_iterator<_OutIt, const _CharT&>) _LIBCPP_HIDE_FROM_ABI _OutIt 530 __vformat_to( 531 _OutIt __out_it, basic_string_view<_CharT> __fmt, 532 basic_format_args<basic_format_context<_FormatOutIt, _CharT>> __args) { 533 if constexpr (same_as<_OutIt, _FormatOutIt>) 534 return _VSTD::__format::__vformat_to( 535 basic_format_parse_context{__fmt, __args.__size()}, 536 _VSTD::__format_context_create(_VSTD::move(__out_it), __args)); 537 else { 538 __format::__format_buffer<_OutIt, _CharT> __buffer{_VSTD::move(__out_it)}; 539 _VSTD::__format::__vformat_to( 540 basic_format_parse_context{__fmt, __args.__size()}, 541 _VSTD::__format_context_create(__buffer.make_output_iterator(), 542 __args)); 543 return _VSTD::move(__buffer).out(); 544 } 545} 546 547// The function is _LIBCPP_ALWAYS_INLINE since the compiler is bad at inlining 548// https://reviews.llvm.org/D110499#inline-1180704 549// TODO FMT Evaluate whether we want to file a Clang bug report regarding this. 550template <output_iterator<const char&> _OutIt> 551_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt 552vformat_to(_OutIt __out_it, string_view __fmt, format_args __args) { 553 return _VSTD::__vformat_to(_VSTD::move(__out_it), __fmt, __args); 554} 555 556#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 557template <output_iterator<const wchar_t&> _OutIt> 558_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt 559vformat_to(_OutIt __out_it, wstring_view __fmt, wformat_args __args) { 560 return _VSTD::__vformat_to(_VSTD::move(__out_it), __fmt, __args); 561} 562#endif 563 564template <output_iterator<const char&> _OutIt, class... _Args> 565_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt 566format_to(_OutIt __out_it, __format_string_t<_Args...> __fmt, const _Args&... __args) { 567 return _VSTD::vformat_to(_VSTD::move(__out_it), __fmt.__str_, 568 _VSTD::make_format_args(__args...)); 569} 570 571#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 572template <output_iterator<const wchar_t&> _OutIt, class... _Args> 573_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt 574format_to(_OutIt __out_it, __wformat_string_t<_Args...> __fmt, const _Args&... __args) { 575 return _VSTD::vformat_to(_VSTD::move(__out_it), __fmt.__str_, 576 _VSTD::make_wformat_args(__args...)); 577} 578#endif 579 580_LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT string 581vformat(string_view __fmt, format_args __args) { 582 string __res; 583 _VSTD::vformat_to(_VSTD::back_inserter(__res), __fmt, __args); 584 return __res; 585} 586 587#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 588_LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT wstring 589vformat(wstring_view __fmt, wformat_args __args) { 590 wstring __res; 591 _VSTD::vformat_to(_VSTD::back_inserter(__res), __fmt, __args); 592 return __res; 593} 594#endif 595 596template <class... _Args> 597_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT string format(__format_string_t<_Args...> __fmt, 598 const _Args&... __args) { 599 return _VSTD::vformat(__fmt.__str_, _VSTD::make_format_args(__args...)); 600} 601 602#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 603template <class... _Args> 604_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT wstring 605format(__wformat_string_t<_Args...> __fmt, const _Args&... __args) { 606 return _VSTD::vformat(__fmt.__str_, _VSTD::make_wformat_args(__args...)); 607} 608#endif 609 610template <class _Context, class _OutIt, class _CharT> 611_LIBCPP_HIDE_FROM_ABI format_to_n_result<_OutIt> __vformat_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, 612 basic_string_view<_CharT> __fmt, 613 basic_format_args<_Context> __args) { 614 __format::__format_to_n_buffer<_OutIt, _CharT> __buffer{_VSTD::move(__out_it), __n}; 615 _VSTD::__format::__vformat_to(basic_format_parse_context{__fmt, __args.__size()}, 616 _VSTD::__format_context_create(__buffer.make_output_iterator(), __args)); 617 return _VSTD::move(__buffer).result(); 618} 619 620template <output_iterator<const char&> _OutIt, class... _Args> 621_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT format_to_n_result<_OutIt> 622format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, __format_string_t<_Args...> __fmt, const _Args&... __args) { 623 return _VSTD::__vformat_to_n<format_context>(_VSTD::move(__out_it), __n, __fmt.__str_, _VSTD::make_format_args(__args...)); 624} 625 626#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 627template <output_iterator<const wchar_t&> _OutIt, class... _Args> 628_LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT format_to_n_result<_OutIt> 629format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, __wformat_string_t<_Args...> __fmt, 630 const _Args&... __args) { 631 return _VSTD::__vformat_to_n<wformat_context>(_VSTD::move(__out_it), __n, __fmt.__str_, _VSTD::make_wformat_args(__args...)); 632} 633#endif 634 635template <class _CharT> 636_LIBCPP_HIDE_FROM_ABI size_t __vformatted_size(basic_string_view<_CharT> __fmt, auto __args) { 637 __format::__formatted_size_buffer<_CharT> __buffer; 638 _VSTD::__format::__vformat_to(basic_format_parse_context{__fmt, __args.__size()}, 639 _VSTD::__format_context_create(__buffer.make_output_iterator(), __args)); 640 return _VSTD::move(__buffer).result(); 641} 642 643template <class... _Args> 644_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT size_t 645formatted_size(__format_string_t<_Args...> __fmt, const _Args&... __args) { 646 return _VSTD::__vformatted_size(__fmt.__str_, basic_format_args{_VSTD::make_format_args(__args...)}); 647} 648 649#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 650template <class... _Args> 651_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT size_t 652formatted_size(__wformat_string_t<_Args...> __fmt, const _Args&... __args) { 653 return _VSTD::__vformatted_size(__fmt.__str_, basic_format_args{_VSTD::make_wformat_args(__args...)}); 654} 655#endif 656 657#ifndef _LIBCPP_HAS_NO_LOCALIZATION 658 659template <class _OutIt, class _CharT, class _FormatOutIt> 660requires(output_iterator<_OutIt, const _CharT&>) _LIBCPP_HIDE_FROM_ABI _OutIt 661 __vformat_to( 662 _OutIt __out_it, locale __loc, basic_string_view<_CharT> __fmt, 663 basic_format_args<basic_format_context<_FormatOutIt, _CharT>> __args) { 664 if constexpr (same_as<_OutIt, _FormatOutIt>) 665 return _VSTD::__format::__vformat_to( 666 basic_format_parse_context{__fmt, __args.__size()}, 667 _VSTD::__format_context_create(_VSTD::move(__out_it), __args, 668 _VSTD::move(__loc))); 669 else { 670 __format::__format_buffer<_OutIt, _CharT> __buffer{_VSTD::move(__out_it)}; 671 _VSTD::__format::__vformat_to( 672 basic_format_parse_context{__fmt, __args.__size()}, 673 _VSTD::__format_context_create(__buffer.make_output_iterator(), 674 __args, _VSTD::move(__loc))); 675 return _VSTD::move(__buffer).out(); 676 } 677} 678 679template <output_iterator<const char&> _OutIt> 680_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt vformat_to( 681 _OutIt __out_it, locale __loc, string_view __fmt, format_args __args) { 682 return _VSTD::__vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt, 683 __args); 684} 685 686#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 687template <output_iterator<const wchar_t&> _OutIt> 688_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt vformat_to( 689 _OutIt __out_it, locale __loc, wstring_view __fmt, wformat_args __args) { 690 return _VSTD::__vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt, 691 __args); 692} 693#endif 694 695template <output_iterator<const char&> _OutIt, class... _Args> 696_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt 697format_to(_OutIt __out_it, locale __loc, __format_string_t<_Args...> __fmt, const _Args&... __args) { 698 return _VSTD::vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt.__str_, 699 _VSTD::make_format_args(__args...)); 700} 701 702#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 703template <output_iterator<const wchar_t&> _OutIt, class... _Args> 704_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt 705format_to(_OutIt __out_it, locale __loc, __wformat_string_t<_Args...> __fmt, const _Args&... __args) { 706 return _VSTD::vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt.__str_, 707 _VSTD::make_wformat_args(__args...)); 708} 709#endif 710 711_LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT string 712vformat(locale __loc, string_view __fmt, format_args __args) { 713 string __res; 714 _VSTD::vformat_to(_VSTD::back_inserter(__res), _VSTD::move(__loc), __fmt, 715 __args); 716 return __res; 717} 718 719#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 720_LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT wstring 721vformat(locale __loc, wstring_view __fmt, wformat_args __args) { 722 wstring __res; 723 _VSTD::vformat_to(_VSTD::back_inserter(__res), _VSTD::move(__loc), __fmt, 724 __args); 725 return __res; 726} 727#endif 728 729template <class... _Args> 730_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT string format(locale __loc, 731 __format_string_t<_Args...> __fmt, 732 const _Args&... __args) { 733 return _VSTD::vformat(_VSTD::move(__loc), __fmt.__str_, 734 _VSTD::make_format_args(__args...)); 735} 736 737#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 738template <class... _Args> 739_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT wstring 740format(locale __loc, __wformat_string_t<_Args...> __fmt, const _Args&... __args) { 741 return _VSTD::vformat(_VSTD::move(__loc), __fmt.__str_, 742 _VSTD::make_wformat_args(__args...)); 743} 744#endif 745 746template <class _Context, class _OutIt, class _CharT> 747_LIBCPP_HIDE_FROM_ABI format_to_n_result<_OutIt> __vformat_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, 748 locale __loc, basic_string_view<_CharT> __fmt, 749 basic_format_args<_Context> __args) { 750 __format::__format_to_n_buffer<_OutIt, _CharT> __buffer{_VSTD::move(__out_it), __n}; 751 _VSTD::__format::__vformat_to( 752 basic_format_parse_context{__fmt, __args.__size()}, 753 _VSTD::__format_context_create(__buffer.make_output_iterator(), __args, _VSTD::move(__loc))); 754 return _VSTD::move(__buffer).result(); 755} 756 757template <output_iterator<const char&> _OutIt, class... _Args> 758_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT format_to_n_result<_OutIt> 759format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, locale __loc, __format_string_t<_Args...> __fmt, 760 const _Args&... __args) { 761 return _VSTD::__vformat_to_n<format_context>(_VSTD::move(__out_it), __n, _VSTD::move(__loc), __fmt.__str_, 762 _VSTD::make_format_args(__args...)); 763} 764 765#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 766template <output_iterator<const wchar_t&> _OutIt, class... _Args> 767_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT format_to_n_result<_OutIt> 768format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, locale __loc, __wformat_string_t<_Args...> __fmt, 769 const _Args&... __args) { 770 return _VSTD::__vformat_to_n<wformat_context>(_VSTD::move(__out_it), __n, _VSTD::move(__loc), __fmt.__str_, 771 _VSTD::make_wformat_args(__args...)); 772} 773#endif 774 775template <class _CharT> 776_LIBCPP_HIDE_FROM_ABI size_t __vformatted_size(locale __loc, basic_string_view<_CharT> __fmt, auto __args) { 777 __format::__formatted_size_buffer<_CharT> __buffer; 778 _VSTD::__format::__vformat_to( 779 basic_format_parse_context{__fmt, __args.__size()}, 780 _VSTD::__format_context_create(__buffer.make_output_iterator(), __args, _VSTD::move(__loc))); 781 return _VSTD::move(__buffer).result(); 782} 783 784template <class... _Args> 785_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT size_t 786formatted_size(locale __loc, __format_string_t<_Args...> __fmt, const _Args&... __args) { 787 return _VSTD::__vformatted_size(_VSTD::move(__loc), __fmt.__str_, basic_format_args{_VSTD::make_format_args(__args...)}); 788} 789 790#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 791template <class... _Args> 792_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT size_t 793formatted_size(locale __loc, __wformat_string_t<_Args...> __fmt, const _Args&... __args) { 794 return _VSTD::__vformatted_size(_VSTD::move(__loc), __fmt.__str_, basic_format_args{_VSTD::make_wformat_args(__args...)}); 795} 796#endif 797 798#endif // _LIBCPP_HAS_NO_LOCALIZATION 799 800#endif //_LIBCPP_STD_VER > 17 801 802_LIBCPP_END_NAMESPACE_STD 803 804#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT) 805 806#endif // _LIBCPP_FORMAT 807