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