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#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS) 215# include <__cxx03/ios> 216#else 217# include <__config> 218 219# if _LIBCPP_HAS_LOCALIZATION 220 221# include <__fwd/ios.h> 222# include <__ios/fpos.h> 223# include <__locale> 224# include <__memory/addressof.h> 225# include <__system_error/error_category.h> 226# include <__system_error/error_code.h> 227# include <__system_error/error_condition.h> 228# include <__system_error/system_error.h> 229# include <__utility/swap.h> 230# include <__verbose_abort> 231# include <version> 232 233// standard-mandated includes 234 235// [ios.syn] 236# include <iosfwd> 237 238# if _LIBCPP_HAS_ATOMIC_HEADER 239# include <__atomic/atomic.h> // for __xindex_ 240# endif 241 242# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 243# pragma GCC system_header 244# endif 245 246_LIBCPP_PUSH_MACROS 247# include <__undef_macros> 248 249_LIBCPP_BEGIN_NAMESPACE_STD 250 251typedef ptrdiff_t streamsize; 252 253class _LIBCPP_EXPORTED_FROM_ABI ios_base { 254public: 255 class _LIBCPP_EXPORTED_FROM_ABI failure; 256 257 typedef unsigned int fmtflags; 258 static const fmtflags boolalpha = 0x0001; 259 static const fmtflags dec = 0x0002; 260 static const fmtflags fixed = 0x0004; 261 static const fmtflags hex = 0x0008; 262 static const fmtflags internal = 0x0010; 263 static const fmtflags left = 0x0020; 264 static const fmtflags oct = 0x0040; 265 static const fmtflags right = 0x0080; 266 static const fmtflags scientific = 0x0100; 267 static const fmtflags showbase = 0x0200; 268 static const fmtflags showpoint = 0x0400; 269 static const fmtflags showpos = 0x0800; 270 static const fmtflags skipws = 0x1000; 271 static const fmtflags unitbuf = 0x2000; 272 static const fmtflags uppercase = 0x4000; 273 static const fmtflags adjustfield = left | right | internal; 274 static const fmtflags basefield = dec | oct | hex; 275 static const fmtflags floatfield = scientific | fixed; 276 277 typedef unsigned int iostate; 278 static const iostate badbit = 0x1; 279 static const iostate eofbit = 0x2; 280 static const iostate failbit = 0x4; 281 static const iostate goodbit = 0x0; 282 283 typedef unsigned int openmode; 284 static const openmode app = 0x01; 285 static const openmode ate = 0x02; 286 static const openmode binary = 0x04; 287 static const openmode in = 0x08; 288 static const openmode out = 0x10; 289 static const openmode trunc = 0x20; 290# if _LIBCPP_STD_VER >= 23 291 static const openmode noreplace = 0x40; 292# endif 293 294 enum seekdir { beg, cur, end }; 295 296# if _LIBCPP_STD_VER <= 14 297 typedef iostate io_state; 298 typedef openmode open_mode; 299 typedef seekdir seek_dir; 300 301 typedef std::streamoff streamoff; 302 typedef std::streampos streampos; 303# endif 304 305 class _LIBCPP_EXPORTED_FROM_ABI Init; 306 307 // 27.5.2.2 fmtflags state: 308 _LIBCPP_HIDE_FROM_ABI fmtflags flags() const; 309 _LIBCPP_HIDE_FROM_ABI fmtflags flags(fmtflags __fmtfl); 310 _LIBCPP_HIDE_FROM_ABI fmtflags setf(fmtflags __fmtfl); 311 _LIBCPP_HIDE_FROM_ABI fmtflags setf(fmtflags __fmtfl, fmtflags __mask); 312 _LIBCPP_HIDE_FROM_ABI void unsetf(fmtflags __mask); 313 314 _LIBCPP_HIDE_FROM_ABI streamsize precision() const; 315 _LIBCPP_HIDE_FROM_ABI streamsize precision(streamsize __prec); 316 _LIBCPP_HIDE_FROM_ABI streamsize width() const; 317 _LIBCPP_HIDE_FROM_ABI streamsize width(streamsize __wide); 318 319 // 27.5.2.3 locales: 320 locale imbue(const locale& __loc); 321 locale getloc() const; 322 323 // 27.5.2.5 storage: 324 static int xalloc(); 325 long& iword(int __index); 326 void*& pword(int __index); 327 328 // destructor 329 virtual ~ios_base(); 330 331 // 27.5.2.6 callbacks; 332 enum event { erase_event, imbue_event, copyfmt_event }; 333 typedef void (*event_callback)(event, ios_base&, int __index); 334 void register_callback(event_callback __fn, int __index); 335 336 ios_base(const ios_base&) = delete; 337 ios_base& operator=(const ios_base&) = delete; 338 339 static bool sync_with_stdio(bool __sync = true); 340 341 _LIBCPP_HIDE_FROM_ABI iostate rdstate() const; 342 void clear(iostate __state = goodbit); 343 _LIBCPP_HIDE_FROM_ABI void setstate(iostate __state); 344 345 _LIBCPP_HIDE_FROM_ABI bool good() const; 346 _LIBCPP_HIDE_FROM_ABI bool eof() const; 347 _LIBCPP_HIDE_FROM_ABI bool fail() const; 348 _LIBCPP_HIDE_FROM_ABI bool bad() const; 349 350 _LIBCPP_HIDE_FROM_ABI iostate exceptions() const; 351 _LIBCPP_HIDE_FROM_ABI void exceptions(iostate __iostate); 352 353 void __set_badbit_and_consider_rethrow(); 354 void __set_failbit_and_consider_rethrow(); 355 356 _LIBCPP_HIDE_FROM_ABI void __setstate_nothrow(iostate __state) { 357 if (__rdbuf_) 358 __rdstate_ |= __state; 359 else 360 __rdstate_ |= __state | ios_base::badbit; 361 } 362 363protected: 364 _LIBCPP_HIDE_FROM_ABI ios_base() : __loc_(nullptr) { 365 // Purposefully does no initialization 366 // 367 // Except for the locale, this is a sentinel to avoid destroying 368 // an uninitialized object. See 369 // test/libcxx/input.output/iostreams.base/ios.base/ios.base.cons/dtor.uninitialized.pass.cpp 370 // for the details. 371 } 372 373 void init(void* __sb); 374 _LIBCPP_HIDE_FROM_ABI void* rdbuf() const { return __rdbuf_; } 375 376 _LIBCPP_HIDE_FROM_ABI void rdbuf(void* __sb) { 377 __rdbuf_ = __sb; 378 clear(); 379 } 380 381 void __call_callbacks(event); 382 void copyfmt(const ios_base&); 383 void move(ios_base&); 384 void swap(ios_base&) _NOEXCEPT; 385 386 _LIBCPP_HIDE_FROM_ABI void set_rdbuf(void* __sb) { __rdbuf_ = __sb; } 387 388private: 389 // All data members must be scalars 390 fmtflags __fmtflags_; 391 streamsize __precision_; 392 streamsize __width_; 393 iostate __rdstate_; 394 iostate __exceptions_; 395 void* __rdbuf_; 396 void* __loc_; 397 event_callback* __fn_; 398 int* __index_; 399 size_t __event_size_; 400 size_t __event_cap_; 401// TODO(EricWF): Enable this for both Clang and GCC. Currently it is only 402// enabled with clang. 403# if _LIBCPP_HAS_C_ATOMIC_IMP && _LIBCPP_HAS_THREADS 404 static atomic<int> __xindex_; 405# else 406 static int __xindex_; 407# endif 408 long* __iarray_; 409 size_t __iarray_size_; 410 size_t __iarray_cap_; 411 void** __parray_; 412 size_t __parray_size_; 413 size_t __parray_cap_; 414}; 415 416// enum class io_errc 417_LIBCPP_DECLARE_STRONG_ENUM(io_errc){stream = 1}; 418_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc) 419 420template <> 421struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc> : public true_type {}; 422 423# ifdef _LIBCPP_CXX03_LANG 424template <> 425struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc::__lx> : public true_type {}; 426# endif 427 428_LIBCPP_EXPORTED_FROM_ABI const error_category& iostream_category() _NOEXCEPT; 429 430inline _LIBCPP_HIDE_FROM_ABI error_code make_error_code(io_errc __e) _NOEXCEPT { 431 return error_code(static_cast<int>(__e), iostream_category()); 432} 433 434inline _LIBCPP_HIDE_FROM_ABI error_condition make_error_condition(io_errc __e) _NOEXCEPT { 435 return error_condition(static_cast<int>(__e), iostream_category()); 436} 437 438class _LIBCPP_EXPORTED_FROM_ABI ios_base::failure : public system_error { 439public: 440 explicit failure(const string& __msg, const error_code& __ec = io_errc::stream); 441 explicit failure(const char* __msg, const error_code& __ec = io_errc::stream); 442 _LIBCPP_HIDE_FROM_ABI failure(const failure&) _NOEXCEPT = default; 443 ~failure() _NOEXCEPT override; 444}; 445 446[[__noreturn__]] inline _LIBCPP_HIDE_FROM_ABI void __throw_failure(char const* __msg) { 447# if _LIBCPP_HAS_EXCEPTIONS 448 throw ios_base::failure(__msg); 449# else 450 _LIBCPP_VERBOSE_ABORT("ios_base::failure was thrown in -fno-exceptions mode with message \"%s\"", __msg); 451# endif 452} 453 454class _LIBCPP_EXPORTED_FROM_ABI ios_base::Init { 455public: 456 Init(); 457 ~Init(); 458}; 459 460// fmtflags 461 462inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::flags() const { return __fmtflags_; } 463 464inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::flags(fmtflags __fmtfl) { 465 fmtflags __r = __fmtflags_; 466 __fmtflags_ = __fmtfl; 467 return __r; 468} 469 470inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::setf(fmtflags __fmtfl) { 471 fmtflags __r = __fmtflags_; 472 __fmtflags_ |= __fmtfl; 473 return __r; 474} 475 476inline _LIBCPP_HIDE_FROM_ABI void ios_base::unsetf(fmtflags __mask) { __fmtflags_ &= ~__mask; } 477 478inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::setf(fmtflags __fmtfl, fmtflags __mask) { 479 fmtflags __r = __fmtflags_; 480 unsetf(__mask); 481 __fmtflags_ |= __fmtfl & __mask; 482 return __r; 483} 484 485// precision 486 487inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::precision() const { return __precision_; } 488 489inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::precision(streamsize __prec) { 490 streamsize __r = __precision_; 491 __precision_ = __prec; 492 return __r; 493} 494 495// width 496 497inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::width() const { return __width_; } 498 499inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::width(streamsize __wide) { 500 streamsize __r = __width_; 501 __width_ = __wide; 502 return __r; 503} 504 505// iostate 506 507inline _LIBCPP_HIDE_FROM_ABI ios_base::iostate ios_base::rdstate() const { return __rdstate_; } 508 509inline _LIBCPP_HIDE_FROM_ABI void ios_base::setstate(iostate __state) { clear(__rdstate_ | __state); } 510 511inline _LIBCPP_HIDE_FROM_ABI bool ios_base::good() const { return __rdstate_ == 0; } 512 513inline _LIBCPP_HIDE_FROM_ABI bool ios_base::eof() const { return (__rdstate_ & eofbit) != 0; } 514 515inline _LIBCPP_HIDE_FROM_ABI bool ios_base::fail() const { return (__rdstate_ & (failbit | badbit)) != 0; } 516 517inline _LIBCPP_HIDE_FROM_ABI bool ios_base::bad() const { return (__rdstate_ & badbit) != 0; } 518 519inline _LIBCPP_HIDE_FROM_ABI ios_base::iostate ios_base::exceptions() const { return __exceptions_; } 520 521inline _LIBCPP_HIDE_FROM_ABI void ios_base::exceptions(iostate __iostate) { 522 __exceptions_ = __iostate; 523 clear(__rdstate_); 524} 525 526template <class _Traits> 527// Attribute 'packed' is used to keep the layout compatible with the previous 528// definition of the '__fill_' and '_set_' pair in basic_ios on AIX & z/OS. 529struct _LIBCPP_PACKED _FillHelper { 530 _LIBCPP_HIDE_FROM_ABI void __init() { 531 __set_ = false; 532 __fill_val_ = _Traits::eof(); 533 } 534 _LIBCPP_HIDE_FROM_ABI _FillHelper& operator=(typename _Traits::int_type __x) { 535 __set_ = true; 536 __fill_val_ = __x; 537 return *this; 538 } 539 _LIBCPP_HIDE_FROM_ABI bool __is_set() const { return __set_; } 540 _LIBCPP_HIDE_FROM_ABI typename _Traits::int_type __get() const { return __fill_val_; } 541 542private: 543 typename _Traits::int_type __fill_val_; 544 bool __set_; 545}; 546 547template <class _Traits> 548struct _LIBCPP_PACKED _SentinelValueFill { 549 _LIBCPP_HIDE_FROM_ABI void __init() { __fill_val_ = _Traits::eof(); } 550 _LIBCPP_HIDE_FROM_ABI _SentinelValueFill& operator=(typename _Traits::int_type __x) { 551 __fill_val_ = __x; 552 return *this; 553 } 554 _LIBCPP_HIDE_FROM_ABI bool __is_set() const { return __fill_val_ != _Traits::eof(); } 555 _LIBCPP_HIDE_FROM_ABI typename _Traits::int_type __get() const { return __fill_val_; } 556 557private: 558 typename _Traits::int_type __fill_val_; 559}; 560 561template <class _CharT, class _Traits> 562class _LIBCPP_TEMPLATE_VIS basic_ios : public ios_base { 563public: 564 // types: 565 typedef _CharT char_type; 566 typedef _Traits traits_type; 567 568 typedef typename traits_type::int_type int_type; 569 typedef typename traits_type::pos_type pos_type; 570 typedef typename traits_type::off_type off_type; 571 572 static_assert(is_same<_CharT, typename traits_type::char_type>::value, 573 "traits_type::char_type must be the same type as CharT"); 574 575# ifdef _LIBCPP_CXX03_LANG 576 // Preserve the ability to compare with literal 0, 577 // and implicitly convert to bool, but not implicitly convert to int. 578 _LIBCPP_HIDE_FROM_ABI operator void*() const { return fail() ? nullptr : (void*)this; } 579# else 580 _LIBCPP_HIDE_FROM_ABI explicit operator bool() const { return !fail(); } 581# endif 582 583 _LIBCPP_HIDE_FROM_ABI bool operator!() const { return fail(); } 584 _LIBCPP_HIDE_FROM_ABI iostate rdstate() const { return ios_base::rdstate(); } 585 _LIBCPP_HIDE_FROM_ABI void clear(iostate __state = goodbit) { ios_base::clear(__state); } 586 _LIBCPP_HIDE_FROM_ABI void setstate(iostate __state) { ios_base::setstate(__state); } 587 _LIBCPP_HIDE_FROM_ABI bool good() const { return ios_base::good(); } 588 _LIBCPP_HIDE_FROM_ABI bool eof() const { return ios_base::eof(); } 589 _LIBCPP_HIDE_FROM_ABI bool fail() const { return ios_base::fail(); } 590 _LIBCPP_HIDE_FROM_ABI bool bad() const { return ios_base::bad(); } 591 592 _LIBCPP_HIDE_FROM_ABI iostate exceptions() const { return ios_base::exceptions(); } 593 _LIBCPP_HIDE_FROM_ABI void exceptions(iostate __iostate) { ios_base::exceptions(__iostate); } 594 595 // 27.5.4.1 Constructor/destructor: 596 _LIBCPP_HIDE_FROM_ABI explicit basic_ios(basic_streambuf<char_type, traits_type>* __sb); 597 ~basic_ios() override; 598 599 // 27.5.4.2 Members: 600 _LIBCPP_HIDE_FROM_ABI basic_ostream<char_type, traits_type>* tie() const; 601 _LIBCPP_HIDE_FROM_ABI basic_ostream<char_type, traits_type>* tie(basic_ostream<char_type, traits_type>* __tiestr); 602 603 _LIBCPP_HIDE_FROM_ABI basic_streambuf<char_type, traits_type>* rdbuf() const; 604 _LIBCPP_HIDE_FROM_ABI basic_streambuf<char_type, traits_type>* rdbuf(basic_streambuf<char_type, traits_type>* __sb); 605 606 basic_ios& copyfmt(const basic_ios& __rhs); 607 608 _LIBCPP_HIDE_FROM_ABI char_type fill() const; 609 _LIBCPP_HIDE_FROM_ABI char_type fill(char_type __ch); 610 611 _LIBCPP_HIDE_FROM_ABI locale imbue(const locale& __loc); 612 613 _LIBCPP_HIDE_FROM_ABI char narrow(char_type __c, char __dfault) const; 614 _LIBCPP_HIDE_FROM_ABI char_type widen(char __c) const; 615 616protected: 617 _LIBCPP_HIDE_FROM_ABI basic_ios() { 618 // purposefully does no initialization 619 // since the destructor does nothing this does not have ios_base issues. 620 } 621 _LIBCPP_HIDE_FROM_ABI void init(basic_streambuf<char_type, traits_type>* __sb); 622 623 _LIBCPP_HIDE_FROM_ABI void move(basic_ios& __rhs); 624 _LIBCPP_HIDE_FROM_ABI void move(basic_ios&& __rhs) { move(__rhs); } 625 _LIBCPP_HIDE_FROM_ABI void swap(basic_ios& __rhs) _NOEXCEPT; 626 _LIBCPP_HIDE_FROM_ABI void set_rdbuf(basic_streambuf<char_type, traits_type>* __sb); 627 628private: 629 basic_ostream<char_type, traits_type>* __tie_; 630 631# if defined(_LIBCPP_ABI_IOS_ALLOW_ARBITRARY_FILL_VALUE) 632 using _FillType _LIBCPP_NODEBUG = _FillHelper<traits_type>; 633# else 634 using _FillType _LIBCPP_NODEBUG = _SentinelValueFill<traits_type>; 635# endif 636 mutable _FillType __fill_; 637}; 638 639template <class _CharT, class _Traits> 640inline _LIBCPP_HIDE_FROM_ABI basic_ios<_CharT, _Traits>::basic_ios(basic_streambuf<char_type, traits_type>* __sb) { 641 init(__sb); 642} 643 644template <class _CharT, class _Traits> 645basic_ios<_CharT, _Traits>::~basic_ios() {} 646 647template <class _CharT, class _Traits> 648inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::init(basic_streambuf<char_type, traits_type>* __sb) { 649 ios_base::init(__sb); 650 __tie_ = nullptr; 651 __fill_.__init(); 652} 653 654template <class _CharT, class _Traits> 655inline _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>* basic_ios<_CharT, _Traits>::tie() const { 656 return __tie_; 657} 658 659template <class _CharT, class _Traits> 660inline _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>* 661basic_ios<_CharT, _Traits>::tie(basic_ostream<char_type, traits_type>* __tiestr) { 662 basic_ostream<char_type, traits_type>* __r = __tie_; 663 __tie_ = __tiestr; 664 return __r; 665} 666 667template <class _CharT, class _Traits> 668inline _LIBCPP_HIDE_FROM_ABI basic_streambuf<_CharT, _Traits>* basic_ios<_CharT, _Traits>::rdbuf() const { 669 return static_cast<basic_streambuf<char_type, traits_type>*>(ios_base::rdbuf()); 670} 671 672template <class _CharT, class _Traits> 673inline _LIBCPP_HIDE_FROM_ABI basic_streambuf<_CharT, _Traits>* 674basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<char_type, traits_type>* __sb) { 675 basic_streambuf<char_type, traits_type>* __r = rdbuf(); 676 ios_base::rdbuf(__sb); 677 return __r; 678} 679 680template <class _CharT, class _Traits> 681inline _LIBCPP_HIDE_FROM_ABI locale basic_ios<_CharT, _Traits>::imbue(const locale& __loc) { 682 locale __r = getloc(); 683 ios_base::imbue(__loc); 684 if (rdbuf()) 685 rdbuf()->pubimbue(__loc); 686 return __r; 687} 688 689template <class _CharT, class _Traits> 690inline _LIBCPP_HIDE_FROM_ABI char basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const { 691 return std::use_facet<ctype<char_type> >(getloc()).narrow(__c, __dfault); 692} 693 694template <class _CharT, class _Traits> 695inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::widen(char __c) const { 696 return std::use_facet<ctype<char_type> >(getloc()).widen(__c); 697} 698 699template <class _CharT, class _Traits> 700inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::fill() const { 701 if (!__fill_.__is_set()) 702 __fill_ = widen(' '); 703 return __fill_.__get(); 704} 705 706template <class _CharT, class _Traits> 707inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::fill(char_type __ch) { 708 if (!__fill_.__is_set()) 709 __fill_ = widen(' '); 710 char_type __r = __fill_.__get(); 711 __fill_ = __ch; 712 return __r; 713} 714 715template <class _CharT, class _Traits> 716basic_ios<_CharT, _Traits>& basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs) { 717 if (this != std::addressof(__rhs)) { 718 __call_callbacks(erase_event); 719 ios_base::copyfmt(__rhs); 720 __tie_ = __rhs.__tie_; 721 __fill_ = __rhs.__fill_; 722 __call_callbacks(copyfmt_event); 723 exceptions(__rhs.exceptions()); 724 } 725 return *this; 726} 727 728template <class _CharT, class _Traits> 729inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::move(basic_ios& __rhs) { 730 ios_base::move(__rhs); 731 __tie_ = __rhs.__tie_; 732 __rhs.__tie_ = nullptr; 733 __fill_ = __rhs.__fill_; 734} 735 736template <class _CharT, class _Traits> 737inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::swap(basic_ios& __rhs) _NOEXCEPT { 738 ios_base::swap(__rhs); 739 std::swap(__tie_, __rhs.__tie_); 740 std::swap(__fill_, __rhs.__fill_); 741} 742 743template <class _CharT, class _Traits> 744inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::set_rdbuf(basic_streambuf<char_type, traits_type>* __sb) { 745 ios_base::set_rdbuf(__sb); 746} 747 748extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<char>; 749 750# if _LIBCPP_HAS_WIDE_CHARACTERS 751extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<wchar_t>; 752# endif 753 754_LIBCPP_HIDE_FROM_ABI inline ios_base& boolalpha(ios_base& __str) { 755 __str.setf(ios_base::boolalpha); 756 return __str; 757} 758 759_LIBCPP_HIDE_FROM_ABI inline ios_base& noboolalpha(ios_base& __str) { 760 __str.unsetf(ios_base::boolalpha); 761 return __str; 762} 763 764_LIBCPP_HIDE_FROM_ABI inline ios_base& showbase(ios_base& __str) { 765 __str.setf(ios_base::showbase); 766 return __str; 767} 768 769_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowbase(ios_base& __str) { 770 __str.unsetf(ios_base::showbase); 771 return __str; 772} 773 774_LIBCPP_HIDE_FROM_ABI inline ios_base& showpoint(ios_base& __str) { 775 __str.setf(ios_base::showpoint); 776 return __str; 777} 778 779_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowpoint(ios_base& __str) { 780 __str.unsetf(ios_base::showpoint); 781 return __str; 782} 783 784_LIBCPP_HIDE_FROM_ABI inline ios_base& showpos(ios_base& __str) { 785 __str.setf(ios_base::showpos); 786 return __str; 787} 788 789_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowpos(ios_base& __str) { 790 __str.unsetf(ios_base::showpos); 791 return __str; 792} 793 794_LIBCPP_HIDE_FROM_ABI inline ios_base& skipws(ios_base& __str) { 795 __str.setf(ios_base::skipws); 796 return __str; 797} 798 799_LIBCPP_HIDE_FROM_ABI inline ios_base& noskipws(ios_base& __str) { 800 __str.unsetf(ios_base::skipws); 801 return __str; 802} 803 804_LIBCPP_HIDE_FROM_ABI inline ios_base& uppercase(ios_base& __str) { 805 __str.setf(ios_base::uppercase); 806 return __str; 807} 808 809_LIBCPP_HIDE_FROM_ABI inline ios_base& nouppercase(ios_base& __str) { 810 __str.unsetf(ios_base::uppercase); 811 return __str; 812} 813 814_LIBCPP_HIDE_FROM_ABI inline ios_base& unitbuf(ios_base& __str) { 815 __str.setf(ios_base::unitbuf); 816 return __str; 817} 818 819_LIBCPP_HIDE_FROM_ABI inline ios_base& nounitbuf(ios_base& __str) { 820 __str.unsetf(ios_base::unitbuf); 821 return __str; 822} 823 824_LIBCPP_HIDE_FROM_ABI inline ios_base& internal(ios_base& __str) { 825 __str.setf(ios_base::internal, ios_base::adjustfield); 826 return __str; 827} 828 829_LIBCPP_HIDE_FROM_ABI inline ios_base& left(ios_base& __str) { 830 __str.setf(ios_base::left, ios_base::adjustfield); 831 return __str; 832} 833 834_LIBCPP_HIDE_FROM_ABI inline ios_base& right(ios_base& __str) { 835 __str.setf(ios_base::right, ios_base::adjustfield); 836 return __str; 837} 838 839_LIBCPP_HIDE_FROM_ABI inline ios_base& dec(ios_base& __str) { 840 __str.setf(ios_base::dec, ios_base::basefield); 841 return __str; 842} 843 844_LIBCPP_HIDE_FROM_ABI inline ios_base& hex(ios_base& __str) { 845 __str.setf(ios_base::hex, ios_base::basefield); 846 return __str; 847} 848 849_LIBCPP_HIDE_FROM_ABI inline ios_base& oct(ios_base& __str) { 850 __str.setf(ios_base::oct, ios_base::basefield); 851 return __str; 852} 853 854_LIBCPP_HIDE_FROM_ABI inline ios_base& fixed(ios_base& __str) { 855 __str.setf(ios_base::fixed, ios_base::floatfield); 856 return __str; 857} 858 859_LIBCPP_HIDE_FROM_ABI inline ios_base& scientific(ios_base& __str) { 860 __str.setf(ios_base::scientific, ios_base::floatfield); 861 return __str; 862} 863 864_LIBCPP_HIDE_FROM_ABI inline ios_base& hexfloat(ios_base& __str) { 865 __str.setf(ios_base::fixed | ios_base::scientific, ios_base::floatfield); 866 return __str; 867} 868 869_LIBCPP_HIDE_FROM_ABI inline ios_base& defaultfloat(ios_base& __str) { 870 __str.unsetf(ios_base::floatfield); 871 return __str; 872} 873 874_LIBCPP_END_NAMESPACE_STD 875 876_LIBCPP_POP_MACROS 877 878# endif // _LIBCPP_HAS_LOCALIZATION 879 880# if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 881# include <atomic> 882# include <concepts> 883# include <cstddef> 884# include <cstdlib> 885# include <cstring> 886# include <initializer_list> 887# include <limits> 888# include <mutex> 889# include <new> 890# include <stdexcept> 891# include <system_error> 892# include <type_traits> 893# include <typeinfo> 894# endif 895#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS) 896 897#endif // _LIBCPP_IOS 898