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_IOS 11#define _LIBCPP_IOS 12 13/* 14 ios synopsis 15 16#include <iosfwd> 17 18namespace std 19{ 20 21typedef OFF_T streamoff; 22typedef SZ_T streamsize; 23template <class stateT> class fpos; 24 25class ios_base 26{ 27public: 28 class failure; 29 30 typedef T1 fmtflags; 31 static constexpr fmtflags boolalpha; 32 static constexpr fmtflags dec; 33 static constexpr fmtflags fixed; 34 static constexpr fmtflags hex; 35 static constexpr fmtflags internal; 36 static constexpr fmtflags left; 37 static constexpr fmtflags oct; 38 static constexpr fmtflags right; 39 static constexpr fmtflags scientific; 40 static constexpr fmtflags showbase; 41 static constexpr fmtflags showpoint; 42 static constexpr fmtflags showpos; 43 static constexpr fmtflags skipws; 44 static constexpr fmtflags unitbuf; 45 static constexpr fmtflags uppercase; 46 static constexpr fmtflags adjustfield; 47 static constexpr fmtflags basefield; 48 static constexpr fmtflags floatfield; 49 50 typedef T2 iostate; 51 static constexpr iostate badbit; 52 static constexpr iostate eofbit; 53 static constexpr iostate failbit; 54 static constexpr iostate goodbit; 55 56 typedef T3 openmode; 57 static constexpr openmode app; 58 static constexpr openmode ate; 59 static constexpr openmode binary; 60 static constexpr openmode in; 61 static constexpr openmode noreplace; // since C++23 62 static constexpr openmode out; 63 static constexpr openmode trunc; 64 65 typedef T4 seekdir; 66 static constexpr seekdir beg; 67 static constexpr seekdir cur; 68 static constexpr seekdir end; 69 70 class Init; 71 72 // 27.5.2.2 fmtflags state: 73 fmtflags flags() const; 74 fmtflags flags(fmtflags fmtfl); 75 fmtflags setf(fmtflags fmtfl); 76 fmtflags setf(fmtflags fmtfl, fmtflags mask); 77 void unsetf(fmtflags mask); 78 79 streamsize precision() const; 80 streamsize precision(streamsize prec); 81 streamsize width() const; 82 streamsize width(streamsize wide); 83 84 // 27.5.2.3 locales: 85 locale imbue(const locale& loc); 86 locale getloc() const; 87 88 // 27.5.2.5 storage: 89 static int xalloc(); 90 long& iword(int index); 91 void*& pword(int index); 92 93 // destructor 94 virtual ~ios_base(); 95 96 // 27.5.2.6 callbacks; 97 enum event { erase_event, imbue_event, copyfmt_event }; 98 typedef void (*event_callback)(event, ios_base&, int index); 99 void register_callback(event_callback fn, int index); 100 101 ios_base(const ios_base&) = delete; 102 ios_base& operator=(const ios_base&) = delete; 103 104 static bool sync_with_stdio(bool sync = true); 105 106protected: 107 ios_base(); 108}; 109 110template <class charT, class traits = char_traits<charT> > 111class basic_ios 112 : public ios_base 113{ 114public: 115 // types: 116 typedef charT char_type; 117 typedef typename traits::int_type int_type; // removed in C++17 118 typedef typename traits::pos_type pos_type; // removed in C++17 119 typedef typename traits::off_type off_type; // removed in C++17 120 typedef traits traits_type; 121 122 operator unspecified-bool-type() const; 123 bool operator!() const; 124 iostate rdstate() const; 125 void clear(iostate state = goodbit); 126 void setstate(iostate state); 127 bool good() const; 128 bool eof() const; 129 bool fail() const; 130 bool bad() const; 131 132 iostate exceptions() const; 133 void exceptions(iostate except); 134 135 // 27.5.4.1 Constructor/destructor: 136 explicit basic_ios(basic_streambuf<charT,traits>* sb); 137 virtual ~basic_ios(); 138 139 // 27.5.4.2 Members: 140 basic_ostream<charT,traits>* tie() const; 141 basic_ostream<charT,traits>* tie(basic_ostream<charT,traits>* tiestr); 142 143 basic_streambuf<charT,traits>* rdbuf() const; 144 basic_streambuf<charT,traits>* rdbuf(basic_streambuf<charT,traits>* sb); 145 146 basic_ios& copyfmt(const basic_ios& rhs); 147 148 char_type fill() const; 149 char_type fill(char_type ch); 150 151 locale imbue(const locale& loc); 152 153 char narrow(char_type c, char dfault) const; 154 char_type widen(char c) const; 155 156 basic_ios(const basic_ios& ) = delete; 157 basic_ios& operator=(const basic_ios&) = delete; 158 159protected: 160 basic_ios(); 161 void init(basic_streambuf<charT,traits>* sb); 162 void move(basic_ios& rhs); 163 void swap(basic_ios& rhs) noexcept; 164 void set_rdbuf(basic_streambuf<charT, traits>* sb); 165}; 166 167// 27.5.5, manipulators: 168ios_base& boolalpha (ios_base& str); 169ios_base& noboolalpha(ios_base& str); 170ios_base& showbase (ios_base& str); 171ios_base& noshowbase (ios_base& str); 172ios_base& showpoint (ios_base& str); 173ios_base& noshowpoint(ios_base& str); 174ios_base& showpos (ios_base& str); 175ios_base& noshowpos (ios_base& str); 176ios_base& skipws (ios_base& str); 177ios_base& noskipws (ios_base& str); 178ios_base& uppercase (ios_base& str); 179ios_base& nouppercase(ios_base& str); 180ios_base& unitbuf (ios_base& str); 181ios_base& nounitbuf (ios_base& str); 182 183// 27.5.5.2 adjustfield: 184ios_base& internal (ios_base& str); 185ios_base& left (ios_base& str); 186ios_base& right (ios_base& str); 187 188// 27.5.5.3 basefield: 189ios_base& dec (ios_base& str); 190ios_base& hex (ios_base& str); 191ios_base& oct (ios_base& str); 192 193// 27.5.5.4 floatfield: 194ios_base& fixed (ios_base& str); 195ios_base& scientific (ios_base& str); 196ios_base& hexfloat (ios_base& str); 197ios_base& defaultfloat(ios_base& str); 198 199// 27.5.5.5 error reporting: 200enum class io_errc 201{ 202 stream = 1 203}; 204 205concept_map ErrorCodeEnum<io_errc> { }; 206error_code make_error_code(io_errc e) noexcept; 207error_condition make_error_condition(io_errc e) noexcept; 208storage-class-specifier const error_category& iostream_category() noexcept; 209 210} // std 211 212*/ 213 214#include <__config> 215 216#if defined(_LIBCPP_HAS_NO_LOCALIZATION) 217# error "The iostreams library is not supported since libc++ has been configured without support for localization." 218#endif 219 220#include <__assert> // all public C++ headers provide the assertion handler 221#include <__fwd/ios.h> 222#include <__ios/fpos.h> 223#include <__locale> 224#include <__system_error/error_category.h> 225#include <__system_error/error_code.h> 226#include <__system_error/error_condition.h> 227#include <__system_error/system_error.h> 228#include <__utility/swap.h> 229#include <__verbose_abort> 230#include <version> 231 232// standard-mandated includes 233 234// [ios.syn] 235#include <iosfwd> 236 237#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) 238# include <__atomic/atomic.h> // for __xindex_ 239#endif 240 241#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 242# pragma GCC system_header 243#endif 244 245_LIBCPP_BEGIN_NAMESPACE_STD 246 247typedef ptrdiff_t streamsize; 248 249class _LIBCPP_EXPORTED_FROM_ABI ios_base { 250public: 251 class _LIBCPP_EXPORTED_FROM_ABI failure; 252 253 typedef unsigned int fmtflags; 254 static const fmtflags boolalpha = 0x0001; 255 static const fmtflags dec = 0x0002; 256 static const fmtflags fixed = 0x0004; 257 static const fmtflags hex = 0x0008; 258 static const fmtflags internal = 0x0010; 259 static const fmtflags left = 0x0020; 260 static const fmtflags oct = 0x0040; 261 static const fmtflags right = 0x0080; 262 static const fmtflags scientific = 0x0100; 263 static const fmtflags showbase = 0x0200; 264 static const fmtflags showpoint = 0x0400; 265 static const fmtflags showpos = 0x0800; 266 static const fmtflags skipws = 0x1000; 267 static const fmtflags unitbuf = 0x2000; 268 static const fmtflags uppercase = 0x4000; 269 static const fmtflags adjustfield = left | right | internal; 270 static const fmtflags basefield = dec | oct | hex; 271 static const fmtflags floatfield = scientific | fixed; 272 273 typedef unsigned int iostate; 274 static const iostate badbit = 0x1; 275 static const iostate eofbit = 0x2; 276 static const iostate failbit = 0x4; 277 static const iostate goodbit = 0x0; 278 279 typedef unsigned int openmode; 280 static const openmode app = 0x01; 281 static const openmode ate = 0x02; 282 static const openmode binary = 0x04; 283 static const openmode in = 0x08; 284 static const openmode out = 0x10; 285 static const openmode trunc = 0x20; 286#if _LIBCPP_STD_VER >= 23 287 static const openmode noreplace = 0x40; 288#endif 289 290 enum seekdir { beg, cur, end }; 291 292#if _LIBCPP_STD_VER <= 14 293 typedef iostate io_state; 294 typedef openmode open_mode; 295 typedef seekdir seek_dir; 296 297 typedef std::streamoff streamoff; 298 typedef std::streampos streampos; 299#endif 300 301 class _LIBCPP_EXPORTED_FROM_ABI Init; 302 303 // 27.5.2.2 fmtflags state: 304 _LIBCPP_HIDE_FROM_ABI fmtflags flags() const; 305 _LIBCPP_HIDE_FROM_ABI fmtflags flags(fmtflags __fmtfl); 306 _LIBCPP_HIDE_FROM_ABI fmtflags setf(fmtflags __fmtfl); 307 _LIBCPP_HIDE_FROM_ABI fmtflags setf(fmtflags __fmtfl, fmtflags __mask); 308 _LIBCPP_HIDE_FROM_ABI void unsetf(fmtflags __mask); 309 310 _LIBCPP_HIDE_FROM_ABI streamsize precision() const; 311 _LIBCPP_HIDE_FROM_ABI streamsize precision(streamsize __prec); 312 _LIBCPP_HIDE_FROM_ABI streamsize width() const; 313 _LIBCPP_HIDE_FROM_ABI streamsize width(streamsize __wide); 314 315 // 27.5.2.3 locales: 316 locale imbue(const locale& __loc); 317 locale getloc() const; 318 319 // 27.5.2.5 storage: 320 static int xalloc(); 321 long& iword(int __index); 322 void*& pword(int __index); 323 324 // destructor 325 virtual ~ios_base(); 326 327 // 27.5.2.6 callbacks; 328 enum event { erase_event, imbue_event, copyfmt_event }; 329 typedef void (*event_callback)(event, ios_base&, int __index); 330 void register_callback(event_callback __fn, int __index); 331 332 ios_base(const ios_base&) = delete; 333 ios_base& operator=(const ios_base&) = delete; 334 335 static bool sync_with_stdio(bool __sync = true); 336 337 _LIBCPP_HIDE_FROM_ABI iostate rdstate() const; 338 void clear(iostate __state = goodbit); 339 _LIBCPP_HIDE_FROM_ABI void setstate(iostate __state); 340 341 _LIBCPP_HIDE_FROM_ABI bool good() const; 342 _LIBCPP_HIDE_FROM_ABI bool eof() const; 343 _LIBCPP_HIDE_FROM_ABI bool fail() const; 344 _LIBCPP_HIDE_FROM_ABI bool bad() const; 345 346 _LIBCPP_HIDE_FROM_ABI iostate exceptions() const; 347 _LIBCPP_HIDE_FROM_ABI void exceptions(iostate __iostate); 348 349 void __set_badbit_and_consider_rethrow(); 350 void __set_failbit_and_consider_rethrow(); 351 352 _LIBCPP_HIDE_FROM_ABI void __setstate_nothrow(iostate __state) { 353 if (__rdbuf_) 354 __rdstate_ |= __state; 355 else 356 __rdstate_ |= __state | ios_base::badbit; 357 } 358 359protected: 360 _LIBCPP_HIDE_FROM_ABI ios_base() { // purposefully does no initialization 361 } 362 363 void init(void* __sb); 364 _LIBCPP_HIDE_FROM_ABI void* rdbuf() const { return __rdbuf_; } 365 366 _LIBCPP_HIDE_FROM_ABI void rdbuf(void* __sb) { 367 __rdbuf_ = __sb; 368 clear(); 369 } 370 371 void __call_callbacks(event); 372 void copyfmt(const ios_base&); 373 void move(ios_base&); 374 void swap(ios_base&) _NOEXCEPT; 375 376 _LIBCPP_HIDE_FROM_ABI void set_rdbuf(void* __sb) { __rdbuf_ = __sb; } 377 378private: 379 // All data members must be scalars 380 fmtflags __fmtflags_; 381 streamsize __precision_; 382 streamsize __width_; 383 iostate __rdstate_; 384 iostate __exceptions_; 385 void* __rdbuf_; 386 void* __loc_; 387 event_callback* __fn_; 388 int* __index_; 389 size_t __event_size_; 390 size_t __event_cap_; 391// TODO(EricWF): Enable this for both Clang and GCC. Currently it is only 392// enabled with clang. 393#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS) 394 static atomic<int> __xindex_; 395#else 396 static int __xindex_; 397#endif 398 long* __iarray_; 399 size_t __iarray_size_; 400 size_t __iarray_cap_; 401 void** __parray_; 402 size_t __parray_size_; 403 size_t __parray_cap_; 404}; 405 406// enum class io_errc 407_LIBCPP_DECLARE_STRONG_ENUM(io_errc){stream = 1}; 408_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc) 409 410template <> 411struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc> : public true_type {}; 412 413#ifdef _LIBCPP_CXX03_LANG 414template <> 415struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc::__lx> : public true_type {}; 416#endif 417 418_LIBCPP_EXPORTED_FROM_ABI const error_category& iostream_category() _NOEXCEPT; 419 420inline _LIBCPP_HIDE_FROM_ABI error_code make_error_code(io_errc __e) _NOEXCEPT { 421 return error_code(static_cast<int>(__e), iostream_category()); 422} 423 424inline _LIBCPP_HIDE_FROM_ABI error_condition make_error_condition(io_errc __e) _NOEXCEPT { 425 return error_condition(static_cast<int>(__e), iostream_category()); 426} 427 428class _LIBCPP_EXPORTED_FROM_ABI ios_base::failure : public system_error { 429public: 430 explicit failure(const string& __msg, const error_code& __ec = io_errc::stream); 431 explicit failure(const char* __msg, const error_code& __ec = io_errc::stream); 432 _LIBCPP_HIDE_FROM_ABI failure(const failure&) _NOEXCEPT = default; 433 ~failure() _NOEXCEPT override; 434}; 435 436_LIBCPP_NORETURN inline _LIBCPP_HIDE_FROM_ABI void __throw_failure(char const* __msg) { 437#ifndef _LIBCPP_HAS_NO_EXCEPTIONS 438 throw ios_base::failure(__msg); 439#else 440 _LIBCPP_VERBOSE_ABORT("ios_base::failure was thrown in -fno-exceptions mode with message \"%s\"", __msg); 441#endif 442} 443 444class _LIBCPP_EXPORTED_FROM_ABI ios_base::Init { 445public: 446 Init(); 447 ~Init(); 448}; 449 450// fmtflags 451 452inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::flags() const { return __fmtflags_; } 453 454inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::flags(fmtflags __fmtfl) { 455 fmtflags __r = __fmtflags_; 456 __fmtflags_ = __fmtfl; 457 return __r; 458} 459 460inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::setf(fmtflags __fmtfl) { 461 fmtflags __r = __fmtflags_; 462 __fmtflags_ |= __fmtfl; 463 return __r; 464} 465 466inline _LIBCPP_HIDE_FROM_ABI void ios_base::unsetf(fmtflags __mask) { __fmtflags_ &= ~__mask; } 467 468inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::setf(fmtflags __fmtfl, fmtflags __mask) { 469 fmtflags __r = __fmtflags_; 470 unsetf(__mask); 471 __fmtflags_ |= __fmtfl & __mask; 472 return __r; 473} 474 475// precision 476 477inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::precision() const { return __precision_; } 478 479inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::precision(streamsize __prec) { 480 streamsize __r = __precision_; 481 __precision_ = __prec; 482 return __r; 483} 484 485// width 486 487inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::width() const { return __width_; } 488 489inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::width(streamsize __wide) { 490 streamsize __r = __width_; 491 __width_ = __wide; 492 return __r; 493} 494 495// iostate 496 497inline _LIBCPP_HIDE_FROM_ABI ios_base::iostate ios_base::rdstate() const { return __rdstate_; } 498 499inline _LIBCPP_HIDE_FROM_ABI void ios_base::setstate(iostate __state) { clear(__rdstate_ | __state); } 500 501inline _LIBCPP_HIDE_FROM_ABI bool ios_base::good() const { return __rdstate_ == 0; } 502 503inline _LIBCPP_HIDE_FROM_ABI bool ios_base::eof() const { return (__rdstate_ & eofbit) != 0; } 504 505inline _LIBCPP_HIDE_FROM_ABI bool ios_base::fail() const { return (__rdstate_ & (failbit | badbit)) != 0; } 506 507inline _LIBCPP_HIDE_FROM_ABI bool ios_base::bad() const { return (__rdstate_ & badbit) != 0; } 508 509inline _LIBCPP_HIDE_FROM_ABI ios_base::iostate ios_base::exceptions() const { return __exceptions_; } 510 511inline _LIBCPP_HIDE_FROM_ABI void ios_base::exceptions(iostate __iostate) { 512 __exceptions_ = __iostate; 513 clear(__rdstate_); 514} 515 516template <class _CharT, class _Traits> 517class _LIBCPP_TEMPLATE_VIS basic_ios : public ios_base { 518public: 519 // types: 520 typedef _CharT char_type; 521 typedef _Traits traits_type; 522 523 typedef typename traits_type::int_type int_type; 524 typedef typename traits_type::pos_type pos_type; 525 typedef typename traits_type::off_type off_type; 526 527 static_assert((is_same<_CharT, typename traits_type::char_type>::value), 528 "traits_type::char_type must be the same type as CharT"); 529 530#ifdef _LIBCPP_CXX03_LANG 531 // Preserve the ability to compare with literal 0, 532 // and implicitly convert to bool, but not implicitly convert to int. 533 _LIBCPP_HIDE_FROM_ABI operator void*() const { return fail() ? nullptr : (void*)this; } 534#else 535 _LIBCPP_HIDE_FROM_ABI explicit operator bool() const { return !fail(); } 536#endif 537 538 _LIBCPP_HIDE_FROM_ABI bool operator!() const { return fail(); } 539 _LIBCPP_HIDE_FROM_ABI iostate rdstate() const { return ios_base::rdstate(); } 540 _LIBCPP_HIDE_FROM_ABI void clear(iostate __state = goodbit) { ios_base::clear(__state); } 541 _LIBCPP_HIDE_FROM_ABI void setstate(iostate __state) { ios_base::setstate(__state); } 542 _LIBCPP_HIDE_FROM_ABI bool good() const { return ios_base::good(); } 543 _LIBCPP_HIDE_FROM_ABI bool eof() const { return ios_base::eof(); } 544 _LIBCPP_HIDE_FROM_ABI bool fail() const { return ios_base::fail(); } 545 _LIBCPP_HIDE_FROM_ABI bool bad() const { return ios_base::bad(); } 546 547 _LIBCPP_HIDE_FROM_ABI iostate exceptions() const { return ios_base::exceptions(); } 548 _LIBCPP_HIDE_FROM_ABI void exceptions(iostate __iostate) { ios_base::exceptions(__iostate); } 549 550 // 27.5.4.1 Constructor/destructor: 551 _LIBCPP_HIDE_FROM_ABI explicit basic_ios(basic_streambuf<char_type, traits_type>* __sb); 552 ~basic_ios() override; 553 554 // 27.5.4.2 Members: 555 _LIBCPP_HIDE_FROM_ABI basic_ostream<char_type, traits_type>* tie() const; 556 _LIBCPP_HIDE_FROM_ABI basic_ostream<char_type, traits_type>* tie(basic_ostream<char_type, traits_type>* __tiestr); 557 558 _LIBCPP_HIDE_FROM_ABI basic_streambuf<char_type, traits_type>* rdbuf() const; 559 _LIBCPP_HIDE_FROM_ABI basic_streambuf<char_type, traits_type>* rdbuf(basic_streambuf<char_type, traits_type>* __sb); 560 561 basic_ios& copyfmt(const basic_ios& __rhs); 562 563 _LIBCPP_HIDE_FROM_ABI char_type fill() const; 564 _LIBCPP_HIDE_FROM_ABI char_type fill(char_type __ch); 565 566 _LIBCPP_HIDE_FROM_ABI locale imbue(const locale& __loc); 567 568 _LIBCPP_HIDE_FROM_ABI char narrow(char_type __c, char __dfault) const; 569 _LIBCPP_HIDE_FROM_ABI char_type widen(char __c) const; 570 571protected: 572 _LIBCPP_HIDE_FROM_ABI basic_ios() { // purposefully does no initialization 573 } 574 _LIBCPP_HIDE_FROM_ABI void init(basic_streambuf<char_type, traits_type>* __sb); 575 576 _LIBCPP_HIDE_FROM_ABI void move(basic_ios& __rhs); 577 _LIBCPP_HIDE_FROM_ABI void move(basic_ios&& __rhs) { move(__rhs); } 578 _LIBCPP_HIDE_FROM_ABI void swap(basic_ios& __rhs) _NOEXCEPT; 579 _LIBCPP_HIDE_FROM_ABI void set_rdbuf(basic_streambuf<char_type, traits_type>* __sb); 580 581private: 582 basic_ostream<char_type, traits_type>* __tie_; 583 mutable int_type __fill_; 584}; 585 586template <class _CharT, class _Traits> 587inline _LIBCPP_HIDE_FROM_ABI basic_ios<_CharT, _Traits>::basic_ios(basic_streambuf<char_type, traits_type>* __sb) { 588 init(__sb); 589} 590 591template <class _CharT, class _Traits> 592basic_ios<_CharT, _Traits>::~basic_ios() {} 593 594template <class _CharT, class _Traits> 595inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::init(basic_streambuf<char_type, traits_type>* __sb) { 596 ios_base::init(__sb); 597 __tie_ = nullptr; 598 __fill_ = traits_type::eof(); 599} 600 601template <class _CharT, class _Traits> 602inline _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>* basic_ios<_CharT, _Traits>::tie() const { 603 return __tie_; 604} 605 606template <class _CharT, class _Traits> 607inline _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>* 608basic_ios<_CharT, _Traits>::tie(basic_ostream<char_type, traits_type>* __tiestr) { 609 basic_ostream<char_type, traits_type>* __r = __tie_; 610 __tie_ = __tiestr; 611 return __r; 612} 613 614template <class _CharT, class _Traits> 615inline _LIBCPP_HIDE_FROM_ABI basic_streambuf<_CharT, _Traits>* basic_ios<_CharT, _Traits>::rdbuf() const { 616 return static_cast<basic_streambuf<char_type, traits_type>*>(ios_base::rdbuf()); 617} 618 619template <class _CharT, class _Traits> 620inline _LIBCPP_HIDE_FROM_ABI basic_streambuf<_CharT, _Traits>* 621basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<char_type, traits_type>* __sb) { 622 basic_streambuf<char_type, traits_type>* __r = rdbuf(); 623 ios_base::rdbuf(__sb); 624 return __r; 625} 626 627template <class _CharT, class _Traits> 628inline _LIBCPP_HIDE_FROM_ABI locale basic_ios<_CharT, _Traits>::imbue(const locale& __loc) { 629 locale __r = getloc(); 630 ios_base::imbue(__loc); 631 if (rdbuf()) 632 rdbuf()->pubimbue(__loc); 633 return __r; 634} 635 636template <class _CharT, class _Traits> 637inline _LIBCPP_HIDE_FROM_ABI char basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const { 638 return std::use_facet<ctype<char_type> >(getloc()).narrow(__c, __dfault); 639} 640 641template <class _CharT, class _Traits> 642inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::widen(char __c) const { 643 return std::use_facet<ctype<char_type> >(getloc()).widen(__c); 644} 645 646template <class _CharT, class _Traits> 647inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::fill() const { 648 if (traits_type::eq_int_type(traits_type::eof(), __fill_)) 649 __fill_ = widen(' '); 650 return __fill_; 651} 652 653template <class _CharT, class _Traits> 654inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::fill(char_type __ch) { 655 if (traits_type::eq_int_type(traits_type::eof(), __fill_)) 656 __fill_ = widen(' '); 657 char_type __r = __fill_; 658 __fill_ = __ch; 659 return __r; 660} 661 662template <class _CharT, class _Traits> 663basic_ios<_CharT, _Traits>& basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs) { 664 if (this != &__rhs) { 665 __call_callbacks(erase_event); 666 ios_base::copyfmt(__rhs); 667 __tie_ = __rhs.__tie_; 668 __fill_ = __rhs.__fill_; 669 __call_callbacks(copyfmt_event); 670 exceptions(__rhs.exceptions()); 671 } 672 return *this; 673} 674 675template <class _CharT, class _Traits> 676inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::move(basic_ios& __rhs) { 677 ios_base::move(__rhs); 678 __tie_ = __rhs.__tie_; 679 __rhs.__tie_ = nullptr; 680 __fill_ = __rhs.__fill_; 681} 682 683template <class _CharT, class _Traits> 684inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::swap(basic_ios& __rhs) _NOEXCEPT { 685 ios_base::swap(__rhs); 686 std::swap(__tie_, __rhs.__tie_); 687 std::swap(__fill_, __rhs.__fill_); 688} 689 690template <class _CharT, class _Traits> 691inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::set_rdbuf(basic_streambuf<char_type, traits_type>* __sb) { 692 ios_base::set_rdbuf(__sb); 693} 694 695extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<char>; 696 697#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 698extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<wchar_t>; 699#endif 700 701_LIBCPP_HIDE_FROM_ABI inline ios_base& boolalpha(ios_base& __str) { 702 __str.setf(ios_base::boolalpha); 703 return __str; 704} 705 706_LIBCPP_HIDE_FROM_ABI inline ios_base& noboolalpha(ios_base& __str) { 707 __str.unsetf(ios_base::boolalpha); 708 return __str; 709} 710 711_LIBCPP_HIDE_FROM_ABI inline ios_base& showbase(ios_base& __str) { 712 __str.setf(ios_base::showbase); 713 return __str; 714} 715 716_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowbase(ios_base& __str) { 717 __str.unsetf(ios_base::showbase); 718 return __str; 719} 720 721_LIBCPP_HIDE_FROM_ABI inline ios_base& showpoint(ios_base& __str) { 722 __str.setf(ios_base::showpoint); 723 return __str; 724} 725 726_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowpoint(ios_base& __str) { 727 __str.unsetf(ios_base::showpoint); 728 return __str; 729} 730 731_LIBCPP_HIDE_FROM_ABI inline ios_base& showpos(ios_base& __str) { 732 __str.setf(ios_base::showpos); 733 return __str; 734} 735 736_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowpos(ios_base& __str) { 737 __str.unsetf(ios_base::showpos); 738 return __str; 739} 740 741_LIBCPP_HIDE_FROM_ABI inline ios_base& skipws(ios_base& __str) { 742 __str.setf(ios_base::skipws); 743 return __str; 744} 745 746_LIBCPP_HIDE_FROM_ABI inline ios_base& noskipws(ios_base& __str) { 747 __str.unsetf(ios_base::skipws); 748 return __str; 749} 750 751_LIBCPP_HIDE_FROM_ABI inline ios_base& uppercase(ios_base& __str) { 752 __str.setf(ios_base::uppercase); 753 return __str; 754} 755 756_LIBCPP_HIDE_FROM_ABI inline ios_base& nouppercase(ios_base& __str) { 757 __str.unsetf(ios_base::uppercase); 758 return __str; 759} 760 761_LIBCPP_HIDE_FROM_ABI inline ios_base& unitbuf(ios_base& __str) { 762 __str.setf(ios_base::unitbuf); 763 return __str; 764} 765 766_LIBCPP_HIDE_FROM_ABI inline ios_base& nounitbuf(ios_base& __str) { 767 __str.unsetf(ios_base::unitbuf); 768 return __str; 769} 770 771_LIBCPP_HIDE_FROM_ABI inline ios_base& internal(ios_base& __str) { 772 __str.setf(ios_base::internal, ios_base::adjustfield); 773 return __str; 774} 775 776_LIBCPP_HIDE_FROM_ABI inline ios_base& left(ios_base& __str) { 777 __str.setf(ios_base::left, ios_base::adjustfield); 778 return __str; 779} 780 781_LIBCPP_HIDE_FROM_ABI inline ios_base& right(ios_base& __str) { 782 __str.setf(ios_base::right, ios_base::adjustfield); 783 return __str; 784} 785 786_LIBCPP_HIDE_FROM_ABI inline ios_base& dec(ios_base& __str) { 787 __str.setf(ios_base::dec, ios_base::basefield); 788 return __str; 789} 790 791_LIBCPP_HIDE_FROM_ABI inline ios_base& hex(ios_base& __str) { 792 __str.setf(ios_base::hex, ios_base::basefield); 793 return __str; 794} 795 796_LIBCPP_HIDE_FROM_ABI inline ios_base& oct(ios_base& __str) { 797 __str.setf(ios_base::oct, ios_base::basefield); 798 return __str; 799} 800 801_LIBCPP_HIDE_FROM_ABI inline ios_base& fixed(ios_base& __str) { 802 __str.setf(ios_base::fixed, ios_base::floatfield); 803 return __str; 804} 805 806_LIBCPP_HIDE_FROM_ABI inline ios_base& scientific(ios_base& __str) { 807 __str.setf(ios_base::scientific, ios_base::floatfield); 808 return __str; 809} 810 811_LIBCPP_HIDE_FROM_ABI inline ios_base& hexfloat(ios_base& __str) { 812 __str.setf(ios_base::fixed | ios_base::scientific, ios_base::floatfield); 813 return __str; 814} 815 816_LIBCPP_HIDE_FROM_ABI inline ios_base& defaultfloat(ios_base& __str) { 817 __str.unsetf(ios_base::floatfield); 818 return __str; 819} 820 821_LIBCPP_END_NAMESPACE_STD 822 823#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 824# include <atomic> 825# include <concepts> 826# include <cstddef> 827# include <cstdlib> 828# include <cstring> 829# include <initializer_list> 830# include <limits> 831# include <mutex> 832# include <new> 833# include <stdexcept> 834# include <system_error> 835# include <type_traits> 836# include <typeinfo> 837#endif 838 839#endif // _LIBCPP_IOS 840