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