1 // -*- C++ -*- 2 //===---------------------------- ios -------------------------------------===// 3 // 4 // The LLVM Compiler Infrastructure 5 // 6 // This file is dual licensed under the MIT and the University of Illinois Open 7 // Source Licenses. See LICENSE.TXT for details. 8 // 9 //===----------------------------------------------------------------------===// 10 11 #ifndef _LIBCPP_IOS 12 #define _LIBCPP_IOS 13 14 /* 15 ios synopsis 16 17 #include <iosfwd> 18 19 namespace std 20 { 21 22 typedef OFF_T streamoff; 23 typedef SZ_T streamsize; 24 template <class stateT> class fpos; 25 26 class ios_base 27 { 28 public: 29 class failure; 30 31 typedef T1 fmtflags; 32 static constexpr fmtflags boolalpha; 33 static constexpr fmtflags dec; 34 static constexpr fmtflags fixed; 35 static constexpr fmtflags hex; 36 static constexpr fmtflags internal; 37 static constexpr fmtflags left; 38 static constexpr fmtflags oct; 39 static constexpr fmtflags right; 40 static constexpr fmtflags scientific; 41 static constexpr fmtflags showbase; 42 static constexpr fmtflags showpoint; 43 static constexpr fmtflags showpos; 44 static constexpr fmtflags skipws; 45 static constexpr fmtflags unitbuf; 46 static constexpr fmtflags uppercase; 47 static constexpr fmtflags adjustfield; 48 static constexpr fmtflags basefield; 49 static constexpr fmtflags floatfield; 50 51 typedef T2 iostate; 52 static constexpr iostate badbit; 53 static constexpr iostate eofbit; 54 static constexpr iostate failbit; 55 static constexpr iostate goodbit; 56 57 typedef T3 openmode; 58 static constexpr openmode app; 59 static constexpr openmode ate; 60 static constexpr openmode binary; 61 static constexpr openmode in; 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); 105 106 protected: 107 ios_base(); 108 }; 109 110 template <class charT, class traits = char_traits<charT> > 111 class basic_ios 112 : public ios_base 113 { 114 public: 115 // types: 116 typedef charT char_type; 117 typedef typename traits::int_type int_type; 118 typedef typename traits::pos_type pos_type; 119 typedef typename traits::off_type off_type; 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; 158 159 protected: 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: 168 ios_base& boolalpha (ios_base& str); 169 ios_base& noboolalpha(ios_base& str); 170 ios_base& showbase (ios_base& str); 171 ios_base& noshowbase (ios_base& str); 172 ios_base& showpoint (ios_base& str); 173 ios_base& noshowpoint(ios_base& str); 174 ios_base& showpos (ios_base& str); 175 ios_base& noshowpos (ios_base& str); 176 ios_base& skipws (ios_base& str); 177 ios_base& noskipws (ios_base& str); 178 ios_base& uppercase (ios_base& str); 179 ios_base& nouppercase(ios_base& str); 180 ios_base& unitbuf (ios_base& str); 181 ios_base& nounitbuf (ios_base& str); 182 183 // 27.5.5.2 adjustfield: 184 ios_base& internal (ios_base& str); 185 ios_base& left (ios_base& str); 186 ios_base& right (ios_base& str); 187 188 // 27.5.5.3 basefield: 189 ios_base& dec (ios_base& str); 190 ios_base& hex (ios_base& str); 191 ios_base& oct (ios_base& str); 192 193 // 27.5.5.4 floatfield: 194 ios_base& fixed (ios_base& str); 195 ios_base& scientific (ios_base& str); 196 ios_base& hexfloat (ios_base& str); 197 ios_base& defaultfloat(ios_base& str); 198 199 // 27.5.5.5 error reporting: 200 enum class io_errc 201 { 202 stream = 1 203 }; 204 205 concept_map ErrorCodeEnum<io_errc> { }; 206 error_code make_error_code(io_errc e) noexcept; 207 error_condition make_error_condition(io_errc e) noexcept; 208 storage-class-specifier const error_category& iostream_category() noexcept; 209 210 } // std 211 212 */ 213 214 #include <__config> 215 #include <iosfwd> 216 #include <__locale> 217 #include <system_error> 218 219 #if __has_feature(cxx_atomic) 220 #include <atomic> // for __xindex_ 221 #endif 222 223 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 224 #pragma GCC system_header 225 #endif 226 227 _LIBCPP_BEGIN_NAMESPACE_STD 228 229 typedef ptrdiff_t streamsize; 230 231 class _LIBCPP_TYPE_VIS ios_base 232 { 233 public: 234 class _LIBCPP_TYPE_VIS failure; 235 236 typedef unsigned int fmtflags; 237 static const fmtflags boolalpha = 0x0001; 238 static const fmtflags dec = 0x0002; 239 static const fmtflags fixed = 0x0004; 240 static const fmtflags hex = 0x0008; 241 static const fmtflags internal = 0x0010; 242 static const fmtflags left = 0x0020; 243 static const fmtflags oct = 0x0040; 244 static const fmtflags right = 0x0080; 245 static const fmtflags scientific = 0x0100; 246 static const fmtflags showbase = 0x0200; 247 static const fmtflags showpoint = 0x0400; 248 static const fmtflags showpos = 0x0800; 249 static const fmtflags skipws = 0x1000; 250 static const fmtflags unitbuf = 0x2000; 251 static const fmtflags uppercase = 0x4000; 252 static const fmtflags adjustfield = left | right | internal; 253 static const fmtflags basefield = dec | oct | hex; 254 static const fmtflags floatfield = scientific | fixed; 255 256 typedef unsigned int iostate; 257 typedef iostate io_state; 258 static const iostate badbit = 0x1; 259 static const iostate eofbit = 0x2; 260 static const iostate failbit = 0x4; 261 static const iostate goodbit = 0x0; 262 263 typedef unsigned int openmode; 264 typedef openmode open_mode; 265 static const openmode app = 0x01; 266 static const openmode ate = 0x02; 267 static const openmode binary = 0x04; 268 static const openmode in = 0x08; 269 static const openmode out = 0x10; 270 static const openmode trunc = 0x20; 271 272 enum seekdir {beg, cur, end}; 273 typedef seekdir seek_dir; 274 275 typedef _VSTD::streamoff streamoff; 276 typedef _VSTD::streampos streampos; 277 278 class _LIBCPP_TYPE_VIS Init; 279 280 // 27.5.2.2 fmtflags state: 281 _LIBCPP_INLINE_VISIBILITY fmtflags flags() const; 282 _LIBCPP_INLINE_VISIBILITY fmtflags flags(fmtflags __fmtfl); 283 _LIBCPP_INLINE_VISIBILITY fmtflags setf(fmtflags __fmtfl); 284 _LIBCPP_INLINE_VISIBILITY fmtflags setf(fmtflags __fmtfl, fmtflags __mask); 285 _LIBCPP_INLINE_VISIBILITY void unsetf(fmtflags __mask); 286 287 _LIBCPP_INLINE_VISIBILITY streamsize precision() const; 288 _LIBCPP_INLINE_VISIBILITY streamsize precision(streamsize __prec); 289 _LIBCPP_INLINE_VISIBILITY streamsize width() const; 290 _LIBCPP_INLINE_VISIBILITY streamsize width(streamsize __wide); 291 292 // 27.5.2.3 locales: 293 locale imbue(const locale& __loc); 294 locale getloc() const; 295 296 // 27.5.2.5 storage: 297 static int xalloc(); 298 long& iword(int __index); 299 void*& pword(int __index); 300 301 // destructor 302 virtual ~ios_base(); 303 304 // 27.5.2.6 callbacks; 305 enum event { erase_event, imbue_event, copyfmt_event }; 306 typedef void (*event_callback)(event, ios_base&, int __index); 307 void register_callback(event_callback __fn, int __index); 308 309 private: 310 ios_base(const ios_base&); // = delete; 311 ios_base& operator=(const ios_base&); // = delete; 312 313 public: 314 static bool sync_with_stdio(bool __sync = true); 315 316 _LIBCPP_INLINE_VISIBILITY iostate rdstate() const; 317 void clear(iostate __state = goodbit); 318 _LIBCPP_INLINE_VISIBILITY void setstate(iostate __state); 319 320 _LIBCPP_INLINE_VISIBILITY bool good() const; 321 _LIBCPP_INLINE_VISIBILITY bool eof() const; 322 _LIBCPP_INLINE_VISIBILITY bool fail() const; 323 _LIBCPP_INLINE_VISIBILITY bool bad() const; 324 325 _LIBCPP_INLINE_VISIBILITY iostate exceptions() const; 326 _LIBCPP_INLINE_VISIBILITY void exceptions(iostate __iostate); 327 328 void __set_badbit_and_consider_rethrow(); 329 void __set_failbit_and_consider_rethrow(); 330 331 protected: 332 _LIBCPP_INLINE_VISIBILITY 333 ios_base() {// purposefully does no initialization 334 } 335 336 void init(void* __sb); 337 _LIBCPP_ALWAYS_INLINE void* rdbuf() const {return __rdbuf_;} 338 339 _LIBCPP_ALWAYS_INLINE 340 void rdbuf(void* __sb) 341 { 342 __rdbuf_ = __sb; 343 clear(); 344 } 345 346 void __call_callbacks(event); 347 void copyfmt(const ios_base&); 348 void move(ios_base&); 349 void swap(ios_base&) _NOEXCEPT; 350 351 _LIBCPP_ALWAYS_INLINE 352 void set_rdbuf(void* __sb) 353 { 354 __rdbuf_ = __sb; 355 } 356 357 private: 358 // All data members must be scalars 359 fmtflags __fmtflags_; 360 streamsize __precision_; 361 streamsize __width_; 362 iostate __rdstate_; 363 iostate __exceptions_; 364 void* __rdbuf_; 365 void* __loc_; 366 event_callback* __fn_; 367 int* __index_; 368 size_t __event_size_; 369 size_t __event_cap_; 370 #if __has_feature(cxx_atomic) 371 static atomic<int> __xindex_; 372 #else 373 static int __xindex_; 374 #endif 375 long* __iarray_; 376 size_t __iarray_size_; 377 size_t __iarray_cap_; 378 void** __parray_; 379 size_t __parray_size_; 380 size_t __parray_cap_; 381 }; 382 383 //enum class io_errc 384 _LIBCPP_DECLARE_STRONG_ENUM(io_errc) 385 { 386 stream = 1 387 }; 388 _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc) 389 390 template <> 391 struct _LIBCPP_TYPE_VIS_ONLY is_error_code_enum<io_errc> : public true_type { }; 392 393 #ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 394 template <> 395 struct _LIBCPP_TYPE_VIS_ONLY is_error_code_enum<io_errc::__lx> : public true_type { }; 396 #endif 397 398 _LIBCPP_FUNC_VIS 399 const error_category& iostream_category() _NOEXCEPT; 400 401 inline _LIBCPP_INLINE_VISIBILITY 402 error_code 403 make_error_code(io_errc __e) _NOEXCEPT 404 { 405 return error_code(static_cast<int>(__e), iostream_category()); 406 } 407 408 inline _LIBCPP_INLINE_VISIBILITY 409 error_condition 410 make_error_condition(io_errc __e) _NOEXCEPT 411 { 412 return error_condition(static_cast<int>(__e), iostream_category()); 413 } 414 415 class _LIBCPP_EXCEPTION_ABI ios_base::failure 416 : public system_error 417 { 418 public: 419 explicit failure(const string& __msg, const error_code& __ec = io_errc::stream); 420 explicit failure(const char* __msg, const error_code& __ec = io_errc::stream); 421 virtual ~failure() throw(); 422 }; 423 424 class _LIBCPP_TYPE_VIS ios_base::Init 425 { 426 public: 427 Init(); 428 ~Init(); 429 }; 430 431 // fmtflags 432 433 inline _LIBCPP_INLINE_VISIBILITY 434 ios_base::fmtflags 435 ios_base::flags() const 436 { 437 return __fmtflags_; 438 } 439 440 inline _LIBCPP_INLINE_VISIBILITY 441 ios_base::fmtflags 442 ios_base::flags(fmtflags __fmtfl) 443 { 444 fmtflags __r = __fmtflags_; 445 __fmtflags_ = __fmtfl; 446 return __r; 447 } 448 449 inline _LIBCPP_INLINE_VISIBILITY 450 ios_base::fmtflags 451 ios_base::setf(fmtflags __fmtfl) 452 { 453 fmtflags __r = __fmtflags_; 454 __fmtflags_ |= __fmtfl; 455 return __r; 456 } 457 458 inline _LIBCPP_INLINE_VISIBILITY 459 void 460 ios_base::unsetf(fmtflags __mask) 461 { 462 __fmtflags_ &= ~__mask; 463 } 464 465 inline _LIBCPP_INLINE_VISIBILITY 466 ios_base::fmtflags 467 ios_base::setf(fmtflags __fmtfl, fmtflags __mask) 468 { 469 fmtflags __r = __fmtflags_; 470 unsetf(__mask); 471 __fmtflags_ |= __fmtfl & __mask; 472 return __r; 473 } 474 475 // precision 476 477 inline _LIBCPP_INLINE_VISIBILITY 478 streamsize 479 ios_base::precision() const 480 { 481 return __precision_; 482 } 483 484 inline _LIBCPP_INLINE_VISIBILITY 485 streamsize 486 ios_base::precision(streamsize __prec) 487 { 488 streamsize __r = __precision_; 489 __precision_ = __prec; 490 return __r; 491 } 492 493 // width 494 495 inline _LIBCPP_INLINE_VISIBILITY 496 streamsize 497 ios_base::width() const 498 { 499 return __width_; 500 } 501 502 inline _LIBCPP_INLINE_VISIBILITY 503 streamsize 504 ios_base::width(streamsize __wide) 505 { 506 streamsize __r = __width_; 507 __width_ = __wide; 508 return __r; 509 } 510 511 // iostate 512 513 inline _LIBCPP_INLINE_VISIBILITY 514 ios_base::iostate 515 ios_base::rdstate() const 516 { 517 return __rdstate_; 518 } 519 520 inline _LIBCPP_INLINE_VISIBILITY 521 void 522 ios_base::setstate(iostate __state) 523 { 524 clear(__rdstate_ | __state); 525 } 526 527 inline _LIBCPP_INLINE_VISIBILITY 528 bool 529 ios_base::good() const 530 { 531 return __rdstate_ == 0; 532 } 533 534 inline _LIBCPP_INLINE_VISIBILITY 535 bool 536 ios_base::eof() const 537 { 538 return (__rdstate_ & eofbit) != 0; 539 } 540 541 inline _LIBCPP_INLINE_VISIBILITY 542 bool 543 ios_base::fail() const 544 { 545 return (__rdstate_ & (failbit | badbit)) != 0; 546 } 547 548 inline _LIBCPP_INLINE_VISIBILITY 549 bool 550 ios_base::bad() const 551 { 552 return (__rdstate_ & badbit) != 0; 553 } 554 555 inline _LIBCPP_INLINE_VISIBILITY 556 ios_base::iostate 557 ios_base::exceptions() const 558 { 559 return __exceptions_; 560 } 561 562 inline _LIBCPP_INLINE_VISIBILITY 563 void 564 ios_base::exceptions(iostate __iostate) 565 { 566 __exceptions_ = __iostate; 567 clear(__rdstate_); 568 } 569 570 template <class _CharT, class _Traits> 571 class _LIBCPP_TYPE_VIS_ONLY basic_ios 572 : public ios_base 573 { 574 public: 575 // types: 576 typedef _CharT char_type; 577 typedef _Traits traits_type; 578 579 typedef typename traits_type::int_type int_type; 580 typedef typename traits_type::pos_type pos_type; 581 typedef typename traits_type::off_type off_type; 582 583 _LIBCPP_ALWAYS_INLINE 584 _LIBCPP_EXPLICIT 585 operator bool() const {return !fail();} 586 _LIBCPP_ALWAYS_INLINE bool operator!() const {return fail();} 587 _LIBCPP_ALWAYS_INLINE iostate rdstate() const {return ios_base::rdstate();} 588 _LIBCPP_ALWAYS_INLINE void clear(iostate __state = goodbit) {ios_base::clear(__state);} 589 _LIBCPP_ALWAYS_INLINE void setstate(iostate __state) {ios_base::setstate(__state);} 590 _LIBCPP_ALWAYS_INLINE bool good() const {return ios_base::good();} 591 _LIBCPP_ALWAYS_INLINE bool eof() const {return ios_base::eof();} 592 _LIBCPP_ALWAYS_INLINE bool fail() const {return ios_base::fail();} 593 _LIBCPP_ALWAYS_INLINE bool bad() const {return ios_base::bad();} 594 595 _LIBCPP_ALWAYS_INLINE iostate exceptions() const {return ios_base::exceptions();} 596 _LIBCPP_ALWAYS_INLINE void exceptions(iostate __iostate) {ios_base::exceptions(__iostate);} 597 598 // 27.5.4.1 Constructor/destructor: 599 _LIBCPP_INLINE_VISIBILITY 600 explicit basic_ios(basic_streambuf<char_type,traits_type>* __sb); 601 virtual ~basic_ios(); 602 603 // 27.5.4.2 Members: 604 _LIBCPP_INLINE_VISIBILITY 605 basic_ostream<char_type, traits_type>* tie() const; 606 _LIBCPP_INLINE_VISIBILITY 607 basic_ostream<char_type, traits_type>* tie(basic_ostream<char_type, traits_type>* __tiestr); 608 609 _LIBCPP_INLINE_VISIBILITY 610 basic_streambuf<char_type, traits_type>* rdbuf() const; 611 _LIBCPP_INLINE_VISIBILITY 612 basic_streambuf<char_type, traits_type>* rdbuf(basic_streambuf<char_type, traits_type>* __sb); 613 614 basic_ios& copyfmt(const basic_ios& __rhs); 615 616 _LIBCPP_INLINE_VISIBILITY 617 char_type fill() const; 618 _LIBCPP_INLINE_VISIBILITY 619 char_type fill(char_type __ch); 620 621 _LIBCPP_INLINE_VISIBILITY 622 locale imbue(const locale& __loc); 623 624 _LIBCPP_INLINE_VISIBILITY 625 char narrow(char_type __c, char __dfault) const; 626 _LIBCPP_INLINE_VISIBILITY 627 char_type widen(char __c) const; 628 629 protected: 630 _LIBCPP_ALWAYS_INLINE 631 basic_ios() {// purposefully does no initialization 632 } 633 _LIBCPP_INLINE_VISIBILITY 634 void init(basic_streambuf<char_type, traits_type>* __sb); 635 636 _LIBCPP_INLINE_VISIBILITY 637 void move(basic_ios& __rhs); 638 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 639 _LIBCPP_ALWAYS_INLINE 640 void move(basic_ios&& __rhs) {move(__rhs);} 641 #endif 642 _LIBCPP_INLINE_VISIBILITY 643 void swap(basic_ios& __rhs) _NOEXCEPT; 644 _LIBCPP_INLINE_VISIBILITY 645 void set_rdbuf(basic_streambuf<char_type, traits_type>* __sb); 646 private: 647 basic_ostream<char_type, traits_type>* __tie_; 648 mutable int_type __fill_; 649 }; 650 651 template <class _CharT, class _Traits> 652 inline _LIBCPP_INLINE_VISIBILITY 653 basic_ios<_CharT, _Traits>::basic_ios(basic_streambuf<char_type,traits_type>* __sb) 654 { 655 init(__sb); 656 } 657 658 template <class _CharT, class _Traits> 659 basic_ios<_CharT, _Traits>::~basic_ios() 660 { 661 } 662 663 template <class _CharT, class _Traits> 664 inline _LIBCPP_INLINE_VISIBILITY 665 void 666 basic_ios<_CharT, _Traits>::init(basic_streambuf<char_type, traits_type>* __sb) 667 { 668 ios_base::init(__sb); 669 __tie_ = 0; 670 __fill_ = traits_type::eof(); 671 } 672 673 template <class _CharT, class _Traits> 674 inline _LIBCPP_INLINE_VISIBILITY 675 basic_ostream<_CharT, _Traits>* 676 basic_ios<_CharT, _Traits>::tie() const 677 { 678 return __tie_; 679 } 680 681 template <class _CharT, class _Traits> 682 inline _LIBCPP_INLINE_VISIBILITY 683 basic_ostream<_CharT, _Traits>* 684 basic_ios<_CharT, _Traits>::tie(basic_ostream<char_type, traits_type>* __tiestr) 685 { 686 basic_ostream<char_type, traits_type>* __r = __tie_; 687 __tie_ = __tiestr; 688 return __r; 689 } 690 691 template <class _CharT, class _Traits> 692 inline _LIBCPP_INLINE_VISIBILITY 693 basic_streambuf<_CharT, _Traits>* 694 basic_ios<_CharT, _Traits>::rdbuf() const 695 { 696 return static_cast<basic_streambuf<char_type, traits_type>*>(ios_base::rdbuf()); 697 } 698 699 template <class _CharT, class _Traits> 700 inline _LIBCPP_INLINE_VISIBILITY 701 basic_streambuf<_CharT, _Traits>* 702 basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<char_type, traits_type>* __sb) 703 { 704 basic_streambuf<char_type, traits_type>* __r = rdbuf(); 705 ios_base::rdbuf(__sb); 706 return __r; 707 } 708 709 template <class _CharT, class _Traits> 710 inline _LIBCPP_INLINE_VISIBILITY 711 locale 712 basic_ios<_CharT, _Traits>::imbue(const locale& __loc) 713 { 714 locale __r = getloc(); 715 ios_base::imbue(__loc); 716 if (rdbuf()) 717 rdbuf()->pubimbue(__loc); 718 return __r; 719 } 720 721 template <class _CharT, class _Traits> 722 inline _LIBCPP_INLINE_VISIBILITY 723 char 724 basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const 725 { 726 return use_facet<ctype<char_type> >(getloc()).narrow(__c, __dfault); 727 } 728 729 template <class _CharT, class _Traits> 730 inline _LIBCPP_INLINE_VISIBILITY 731 _CharT 732 basic_ios<_CharT, _Traits>::widen(char __c) const 733 { 734 return use_facet<ctype<char_type> >(getloc()).widen(__c); 735 } 736 737 template <class _CharT, class _Traits> 738 inline _LIBCPP_INLINE_VISIBILITY 739 _CharT 740 basic_ios<_CharT, _Traits>::fill() const 741 { 742 if (traits_type::eq_int_type(traits_type::eof(), __fill_)) 743 __fill_ = widen(' '); 744 return __fill_; 745 } 746 747 template <class _CharT, class _Traits> 748 inline _LIBCPP_INLINE_VISIBILITY 749 _CharT 750 basic_ios<_CharT, _Traits>::fill(char_type __ch) 751 { 752 char_type __r = __fill_; 753 __fill_ = __ch; 754 return __r; 755 } 756 757 template <class _CharT, class _Traits> 758 basic_ios<_CharT, _Traits>& 759 basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs) 760 { 761 if (this != &__rhs) 762 { 763 __call_callbacks(erase_event); 764 ios_base::copyfmt(__rhs); 765 __tie_ = __rhs.__tie_; 766 __fill_ = __rhs.__fill_; 767 __call_callbacks(copyfmt_event); 768 exceptions(__rhs.exceptions()); 769 } 770 return *this; 771 } 772 773 template <class _CharT, class _Traits> 774 inline _LIBCPP_INLINE_VISIBILITY 775 void 776 basic_ios<_CharT, _Traits>::move(basic_ios& __rhs) 777 { 778 ios_base::move(__rhs); 779 __tie_ = __rhs.__tie_; 780 __rhs.__tie_ = 0; 781 __fill_ = __rhs.__fill_; 782 } 783 784 template <class _CharT, class _Traits> 785 inline _LIBCPP_INLINE_VISIBILITY 786 void 787 basic_ios<_CharT, _Traits>::swap(basic_ios& __rhs) _NOEXCEPT 788 { 789 ios_base::swap(__rhs); 790 _VSTD::swap(__tie_, __rhs.__tie_); 791 _VSTD::swap(__fill_, __rhs.__fill_); 792 } 793 794 template <class _CharT, class _Traits> 795 inline _LIBCPP_INLINE_VISIBILITY 796 void 797 basic_ios<_CharT, _Traits>::set_rdbuf(basic_streambuf<char_type, traits_type>* __sb) 798 { 799 ios_base::set_rdbuf(__sb); 800 } 801 802 inline _LIBCPP_INLINE_VISIBILITY 803 ios_base& 804 boolalpha(ios_base& __str) 805 { 806 __str.setf(ios_base::boolalpha); 807 return __str; 808 } 809 810 inline _LIBCPP_INLINE_VISIBILITY 811 ios_base& 812 noboolalpha(ios_base& __str) 813 { 814 __str.unsetf(ios_base::boolalpha); 815 return __str; 816 } 817 818 inline _LIBCPP_INLINE_VISIBILITY 819 ios_base& 820 showbase(ios_base& __str) 821 { 822 __str.setf(ios_base::showbase); 823 return __str; 824 } 825 826 inline _LIBCPP_INLINE_VISIBILITY 827 ios_base& 828 noshowbase(ios_base& __str) 829 { 830 __str.unsetf(ios_base::showbase); 831 return __str; 832 } 833 834 inline _LIBCPP_INLINE_VISIBILITY 835 ios_base& 836 showpoint(ios_base& __str) 837 { 838 __str.setf(ios_base::showpoint); 839 return __str; 840 } 841 842 inline _LIBCPP_INLINE_VISIBILITY 843 ios_base& 844 noshowpoint(ios_base& __str) 845 { 846 __str.unsetf(ios_base::showpoint); 847 return __str; 848 } 849 850 inline _LIBCPP_INLINE_VISIBILITY 851 ios_base& 852 showpos(ios_base& __str) 853 { 854 __str.setf(ios_base::showpos); 855 return __str; 856 } 857 858 inline _LIBCPP_INLINE_VISIBILITY 859 ios_base& 860 noshowpos(ios_base& __str) 861 { 862 __str.unsetf(ios_base::showpos); 863 return __str; 864 } 865 866 inline _LIBCPP_INLINE_VISIBILITY 867 ios_base& 868 skipws(ios_base& __str) 869 { 870 __str.setf(ios_base::skipws); 871 return __str; 872 } 873 874 inline _LIBCPP_INLINE_VISIBILITY 875 ios_base& 876 noskipws(ios_base& __str) 877 { 878 __str.unsetf(ios_base::skipws); 879 return __str; 880 } 881 882 inline _LIBCPP_INLINE_VISIBILITY 883 ios_base& 884 uppercase(ios_base& __str) 885 { 886 __str.setf(ios_base::uppercase); 887 return __str; 888 } 889 890 inline _LIBCPP_INLINE_VISIBILITY 891 ios_base& 892 nouppercase(ios_base& __str) 893 { 894 __str.unsetf(ios_base::uppercase); 895 return __str; 896 } 897 898 inline _LIBCPP_INLINE_VISIBILITY 899 ios_base& 900 unitbuf(ios_base& __str) 901 { 902 __str.setf(ios_base::unitbuf); 903 return __str; 904 } 905 906 inline _LIBCPP_INLINE_VISIBILITY 907 ios_base& 908 nounitbuf(ios_base& __str) 909 { 910 __str.unsetf(ios_base::unitbuf); 911 return __str; 912 } 913 914 inline _LIBCPP_INLINE_VISIBILITY 915 ios_base& 916 internal(ios_base& __str) 917 { 918 __str.setf(ios_base::internal, ios_base::adjustfield); 919 return __str; 920 } 921 922 inline _LIBCPP_INLINE_VISIBILITY 923 ios_base& 924 left(ios_base& __str) 925 { 926 __str.setf(ios_base::left, ios_base::adjustfield); 927 return __str; 928 } 929 930 inline _LIBCPP_INLINE_VISIBILITY 931 ios_base& 932 right(ios_base& __str) 933 { 934 __str.setf(ios_base::right, ios_base::adjustfield); 935 return __str; 936 } 937 938 inline _LIBCPP_INLINE_VISIBILITY 939 ios_base& 940 dec(ios_base& __str) 941 { 942 __str.setf(ios_base::dec, ios_base::basefield); 943 return __str; 944 } 945 946 inline _LIBCPP_INLINE_VISIBILITY 947 ios_base& 948 hex(ios_base& __str) 949 { 950 __str.setf(ios_base::hex, ios_base::basefield); 951 return __str; 952 } 953 954 inline _LIBCPP_INLINE_VISIBILITY 955 ios_base& 956 oct(ios_base& __str) 957 { 958 __str.setf(ios_base::oct, ios_base::basefield); 959 return __str; 960 } 961 962 inline _LIBCPP_INLINE_VISIBILITY 963 ios_base& 964 fixed(ios_base& __str) 965 { 966 __str.setf(ios_base::fixed, ios_base::floatfield); 967 return __str; 968 } 969 970 inline _LIBCPP_INLINE_VISIBILITY 971 ios_base& 972 scientific(ios_base& __str) 973 { 974 __str.setf(ios_base::scientific, ios_base::floatfield); 975 return __str; 976 } 977 978 inline _LIBCPP_INLINE_VISIBILITY 979 ios_base& 980 hexfloat(ios_base& __str) 981 { 982 __str.setf(ios_base::fixed | ios_base::scientific, ios_base::floatfield); 983 return __str; 984 } 985 986 inline _LIBCPP_INLINE_VISIBILITY 987 ios_base& 988 defaultfloat(ios_base& __str) 989 { 990 __str.unsetf(ios_base::floatfield); 991 return __str; 992 } 993 994 template <class _CharT, class _Traits> 995 class __save_flags 996 { 997 typedef basic_ios<_CharT, _Traits> __stream_type; 998 typedef typename __stream_type::fmtflags fmtflags; 999 1000 __stream_type& __stream_; 1001 fmtflags __fmtflags_; 1002 _CharT __fill_; 1003 1004 __save_flags(const __save_flags&); 1005 __save_flags& operator=(const __save_flags&); 1006 public: 1007 _LIBCPP_INLINE_VISIBILITY 1008 explicit __save_flags(__stream_type& __stream) 1009 : __stream_(__stream), 1010 __fmtflags_(__stream.flags()), 1011 __fill_(__stream.fill()) 1012 {} 1013 _LIBCPP_INLINE_VISIBILITY 1014 ~__save_flags() 1015 { 1016 __stream_.flags(__fmtflags_); 1017 __stream_.fill(__fill_); 1018 } 1019 }; 1020 1021 _LIBCPP_END_NAMESPACE_STD 1022 1023 #endif // _LIBCPP_IOS 1024
