1 // -*- C++ -*- 2 //===--------------------------- istream ----------------------------------===// 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_ISTREAM 12 #define _LIBCPP_ISTREAM 13 14 /* 15 istream synopsis 16 17 template <class charT, class traits = char_traits<charT> > 18 class basic_istream 19 : virtual public basic_ios<charT,traits> 20 { 21 public: 22 // types (inherited from basic_ios (27.5.4)): 23 typedef charT char_type; 24 typedef traits traits_type; 25 typedef typename traits_type::int_type int_type; 26 typedef typename traits_type::pos_type pos_type; 27 typedef typename traits_type::off_type off_type; 28 29 // 27.7.1.1.1 Constructor/destructor: 30 explicit basic_istream(basic_streambuf<char_type, traits_type>* sb); 31 basic_istream(basic_istream&& rhs); 32 virtual ~basic_istream(); 33 34 // 27.7.1.1.2 Assign/swap: 35 basic_istream& operator=(basic_istream&& rhs); 36 void swap(basic_istream& rhs); 37 38 // 27.7.1.1.3 Prefix/suffix: 39 class sentry; 40 41 // 27.7.1.2 Formatted input: 42 basic_istream& operator>>(basic_istream& (*pf)(basic_istream&)); 43 basic_istream& operator>>(basic_ios<char_type, traits_type>& 44 (*pf)(basic_ios<char_type, traits_type>&)); 45 basic_istream& operator>>(ios_base& (*pf)(ios_base&)); 46 basic_istream& operator>>(basic_streambuf<char_type, traits_type>* sb); 47 basic_istream& operator>>(bool& n); 48 basic_istream& operator>>(short& n); 49 basic_istream& operator>>(unsigned short& n); 50 basic_istream& operator>>(int& n); 51 basic_istream& operator>>(unsigned int& n); 52 basic_istream& operator>>(long& n); 53 basic_istream& operator>>(unsigned long& n); 54 basic_istream& operator>>(long long& n); 55 basic_istream& operator>>(unsigned long long& n); 56 basic_istream& operator>>(float& f); 57 basic_istream& operator>>(double& f); 58 basic_istream& operator>>(long double& f); 59 basic_istream& operator>>(void*& p); 60 61 // 27.7.1.3 Unformatted input: 62 streamsize gcount() const; 63 int_type get(); 64 basic_istream& get(char_type& c); 65 basic_istream& get(char_type* s, streamsize n); 66 basic_istream& get(char_type* s, streamsize n, char_type delim); 67 basic_istream& get(basic_streambuf<char_type,traits_type>& sb); 68 basic_istream& get(basic_streambuf<char_type,traits_type>& sb, char_type delim); 69 70 basic_istream& getline(char_type* s, streamsize n); 71 basic_istream& getline(char_type* s, streamsize n, char_type delim); 72 73 basic_istream& ignore(streamsize n = 1, int_type delim = traits_type::eof()); 74 int_type peek(); 75 basic_istream& read (char_type* s, streamsize n); 76 streamsize readsome(char_type* s, streamsize n); 77 78 basic_istream& putback(char_type c); 79 basic_istream& unget(); 80 int sync(); 81 82 pos_type tellg(); 83 basic_istream& seekg(pos_type); 84 basic_istream& seekg(off_type, ios_base::seekdir); 85 protected: 86 basic_istream(const basic_istream& rhs) = delete; 87 basic_istream(basic_istream&& rhs); 88 // 27.7.2.1.2 Assign/swap: 89 basic_istream& operator=(const basic_istream& rhs) = delete; 90 basic_istream& operator=(basic_istream&& rhs); 91 void swap(basic_istream& rhs); 92 }; 93 94 // 27.7.1.2.3 character extraction templates: 95 template<class charT, class traits> 96 basic_istream<charT,traits>& operator>>(basic_istream<charT,traits>&, charT&); 97 98 template<class traits> 99 basic_istream<char,traits>& operator>>(basic_istream<char,traits>&, unsigned char&); 100 101 template<class traits> 102 basic_istream<char,traits>& operator>>(basic_istream<char,traits>&, signed char&); 103 104 template<class charT, class traits> 105 basic_istream<charT,traits>& operator>>(basic_istream<charT,traits>&, charT*); 106 107 template<class traits> 108 basic_istream<char,traits>& operator>>(basic_istream<char,traits>&, unsigned char*); 109 110 template<class traits> 111 basic_istream<char,traits>& operator>>(basic_istream<char,traits>&, signed char*); 112 113 template <class charT, class traits> 114 void 115 swap(basic_istream<charT, traits>& x, basic_istream<charT, traits>& y); 116 117 typedef basic_istream<char> istream; 118 typedef basic_istream<wchar_t> wistream; 119 120 template <class charT, class traits = char_traits<charT> > 121 class basic_iostream : 122 public basic_istream<charT,traits>, 123 public basic_ostream<charT,traits> 124 { 125 public: 126 // types: 127 typedef charT char_type; 128 typedef traits traits_type; 129 typedef typename traits_type::int_type int_type; 130 typedef typename traits_type::pos_type pos_type; 131 typedef typename traits_type::off_type off_type; 132 133 // constructor/destructor 134 explicit basic_iostream(basic_streambuf<char_type, traits_type>* sb); 135 basic_iostream(basic_iostream&& rhs); 136 virtual ~basic_iostream(); 137 138 // assign/swap 139 basic_iostream& operator=(basic_iostream&& rhs); 140 void swap(basic_iostream& rhs); 141 }; 142 143 template <class charT, class traits> 144 void 145 swap(basic_iostream<charT, traits>& x, basic_iostream<charT, traits>& y); 146 147 typedef basic_iostream<char> iostream; 148 typedef basic_iostream<wchar_t> wiostream; 149 150 template <class charT, class traits> 151 basic_istream<charT,traits>& 152 ws(basic_istream<charT,traits>& is); 153 154 template <class charT, class traits, class T> 155 basic_istream<charT, traits>& 156 operator>>(basic_istream<charT, traits>&& is, T& x); 157 158 } // std 159 160 */ 161 162 #include <__config> 163 #include <ostream> 164 165 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 166 #pragma GCC system_header 167 #endif 168 169 _LIBCPP_PUSH_MACROS 170 #include <__undef_macros> 171 172 173 _LIBCPP_BEGIN_NAMESPACE_STD 174 175 template <class _CharT, class _Traits> 176 class _LIBCPP_TEMPLATE_VIS basic_istream 177 : virtual public basic_ios<_CharT, _Traits> 178 { 179 streamsize __gc_; 180 public: 181 // types (inherited from basic_ios (27.5.4)): 182 typedef _CharT char_type; 183 typedef _Traits traits_type; 184 typedef typename traits_type::int_type int_type; 185 typedef typename traits_type::pos_type pos_type; 186 typedef typename traits_type::off_type off_type; 187 188 // 27.7.1.1.1 Constructor/destructor: 189 inline _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 190 explicit basic_istream(basic_streambuf<char_type, traits_type>* __sb) : __gc_(0) 191 { this->init(__sb); } 192 virtual ~basic_istream(); 193 protected: 194 #ifndef _LIBCPP_CXX03_LANG 195 inline _LIBCPP_INLINE_VISIBILITY 196 basic_istream(basic_istream&& __rhs); 197 198 // 27.7.1.1.2 Assign/swap: 199 inline _LIBCPP_INLINE_VISIBILITY 200 basic_istream& operator=(basic_istream&& __rhs); 201 #endif 202 203 inline _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 204 void swap(basic_istream& __rhs) { 205 _VSTD::swap(__gc_, __rhs.__gc_); 206 basic_ios<char_type, traits_type>::swap(__rhs); 207 } 208 209 #ifndef _LIBCPP_CXX03_LANG 210 basic_istream (const basic_istream& __rhs) = delete; 211 basic_istream& operator=(const basic_istream& __rhs) = delete; 212 #endif 213 public: 214 215 // 27.7.1.1.3 Prefix/suffix: 216 class _LIBCPP_TEMPLATE_VIS sentry; 217 218 // 27.7.1.2 Formatted input: 219 inline _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 220 basic_istream& operator>>(basic_istream& (*__pf)(basic_istream&)) 221 { return __pf(*this); } 222 223 inline _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 224 basic_istream& operator>>(basic_ios<char_type, traits_type>& 225 (*__pf)(basic_ios<char_type, traits_type>&)) 226 { __pf(*this); return *this; } 227 228 inline _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 229 basic_istream& operator>>(ios_base& (*__pf)(ios_base&)) 230 { __pf(*this); return *this; } 231 232 basic_istream& operator>>(basic_streambuf<char_type, traits_type>* __sb); 233 basic_istream& operator>>(bool& __n); 234 basic_istream& operator>>(short& __n); 235 basic_istream& operator>>(unsigned short& __n); 236 basic_istream& operator>>(int& __n); 237 basic_istream& operator>>(unsigned int& __n); 238 basic_istream& operator>>(long& __n); 239 basic_istream& operator>>(unsigned long& __n); 240 basic_istream& operator>>(long long& __n); 241 basic_istream& operator>>(unsigned long long& __n); 242 basic_istream& operator>>(float& __f); 243 basic_istream& operator>>(double& __f); 244 basic_istream& operator>>(long double& __f); 245 basic_istream& operator>>(void*& __p); 246 247 // 27.7.1.3 Unformatted input: 248 _LIBCPP_INLINE_VISIBILITY 249 streamsize gcount() const {return __gc_;} 250 int_type get(); 251 252 inline _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 253 basic_istream& get(char_type& __c) { 254 int_type __ch = get(); 255 if (__ch != traits_type::eof()) 256 __c = traits_type::to_char_type(__ch); 257 return *this; 258 } 259 260 inline _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 261 basic_istream& get(char_type* __s, streamsize __n) 262 { return get(__s, __n, this->widen('\n')); } 263 264 basic_istream& get(char_type* __s, streamsize __n, char_type __dlm); 265 266 inline _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 267 basic_istream& get(basic_streambuf<char_type, traits_type>& __sb) 268 { return get(__sb, this->widen('\n')); } 269 270 basic_istream& get(basic_streambuf<char_type, traits_type>& __sb, char_type __dlm); 271 272 inline _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 273 basic_istream& getline(char_type* __s, streamsize __n) 274 { return getline(__s, __n, this->widen('\n')); } 275 276 basic_istream& getline(char_type* __s, streamsize __n, char_type __dlm); 277 278 basic_istream& ignore(streamsize __n = 1, int_type __dlm = traits_type::eof()); 279 int_type peek(); 280 basic_istream& read (char_type* __s, streamsize __n); 281 streamsize readsome(char_type* __s, streamsize __n); 282 283 basic_istream& putback(char_type __c); 284 basic_istream& unget(); 285 int sync(); 286 287 pos_type tellg(); 288 basic_istream& seekg(pos_type __pos); 289 basic_istream& seekg(off_type __off, ios_base::seekdir __dir); 290 }; 291 292 template <class _CharT, class _Traits> 293 class _LIBCPP_TEMPLATE_VIS basic_istream<_CharT, _Traits>::sentry 294 { 295 bool __ok_; 296 297 sentry(const sentry&); // = delete; 298 sentry& operator=(const sentry&); // = delete; 299 300 public: 301 explicit sentry(basic_istream<_CharT, _Traits>& __is, bool __noskipws = false); 302 // ~sentry() = default; 303 304 _LIBCPP_INLINE_VISIBILITY 305 _LIBCPP_EXPLICIT 306 operator bool() const {return __ok_;} 307 }; 308 309 template <class _CharT, class _Traits> 310 basic_istream<_CharT, _Traits>::sentry::sentry(basic_istream<_CharT, _Traits>& __is, 311 bool __noskipws) 312 : __ok_(false) 313 { 314 if (__is.good()) 315 { 316 if (__is.tie()) 317 __is.tie()->flush(); 318 if (!__noskipws && (__is.flags() & ios_base::skipws)) 319 { 320 typedef istreambuf_iterator<_CharT, _Traits> _Ip; 321 const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__is.getloc()); 322 _Ip __i(__is); 323 _Ip __eof; 324 for (; __i != __eof; ++__i) 325 if (!__ct.is(__ct.space, *__i)) 326 break; 327 if (__i == __eof) 328 __is.setstate(ios_base::failbit | ios_base::eofbit); 329 } 330 __ok_ = __is.good(); 331 } 332 else 333 __is.setstate(ios_base::failbit); 334 } 335 336 #ifndef _LIBCPP_CXX03_LANG 337 338 template <class _CharT, class _Traits> 339 basic_istream<_CharT, _Traits>::basic_istream(basic_istream&& __rhs) 340 : __gc_(__rhs.__gc_) 341 { 342 __rhs.__gc_ = 0; 343 this->move(__rhs); 344 } 345 346 template <class _CharT, class _Traits> 347 basic_istream<_CharT, _Traits>& 348 basic_istream<_CharT, _Traits>::operator=(basic_istream&& __rhs) 349 { 350 swap(__rhs); 351 return *this; 352 } 353 354 #endif // _LIBCPP_CXX03_LANG 355 356 template <class _CharT, class _Traits> 357 basic_istream<_CharT, _Traits>::~basic_istream() 358 { 359 } 360 361 template <class _CharT, class _Traits> 362 basic_istream<_CharT, _Traits>& 363 basic_istream<_CharT, _Traits>::operator>>(unsigned short& __n) 364 { 365 #ifndef _LIBCPP_NO_EXCEPTIONS 366 try 367 { 368 #endif // _LIBCPP_NO_EXCEPTIONS 369 sentry __s(*this); 370 if (__s) 371 { 372 typedef istreambuf_iterator<char_type, traits_type> _Ip; 373 typedef num_get<char_type, _Ip> _Fp; 374 ios_base::iostate __err = ios_base::goodbit; 375 use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n); 376 this->setstate(__err); 377 } 378 #ifndef _LIBCPP_NO_EXCEPTIONS 379 } 380 catch (...) 381 { 382 this->__set_badbit_and_consider_rethrow(); 383 } 384 #endif // _LIBCPP_NO_EXCEPTIONS 385 return *this; 386 } 387 388 template <class _CharT, class _Traits> 389 basic_istream<_CharT, _Traits>& 390 basic_istream<_CharT, _Traits>::operator>>(unsigned int& __n) 391 { 392 #ifndef _LIBCPP_NO_EXCEPTIONS 393 try 394 { 395 #endif // _LIBCPP_NO_EXCEPTIONS 396 sentry __s(*this); 397 if (__s) 398 { 399 typedef istreambuf_iterator<char_type, traits_type> _Ip; 400 typedef num_get<char_type, _Ip> _Fp; 401 ios_base::iostate __err = ios_base::goodbit; 402 use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n); 403 this->setstate(__err); 404 } 405 #ifndef _LIBCPP_NO_EXCEPTIONS 406 } 407 catch (...) 408 { 409 this->__set_badbit_and_consider_rethrow(); 410 } 411 #endif // _LIBCPP_NO_EXCEPTIONS 412 return *this; 413 } 414 415 template <class _CharT, class _Traits> 416 basic_istream<_CharT, _Traits>& 417 basic_istream<_CharT, _Traits>::operator>>(long& __n) 418 { 419 #ifndef _LIBCPP_NO_EXCEPTIONS 420 try 421 { 422 #endif // _LIBCPP_NO_EXCEPTIONS 423 sentry __s(*this); 424 if (__s) 425 { 426 typedef istreambuf_iterator<char_type, traits_type> _Ip; 427 typedef num_get<char_type, _Ip> _Fp; 428 ios_base::iostate __err = ios_base::goodbit; 429 use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n); 430 this->setstate(__err); 431 } 432 #ifndef _LIBCPP_NO_EXCEPTIONS 433 } 434 catch (...) 435 { 436 this->__set_badbit_and_consider_rethrow(); 437 } 438 #endif // _LIBCPP_NO_EXCEPTIONS 439 return *this; 440 } 441 442 template <class _CharT, class _Traits> 443 basic_istream<_CharT, _Traits>& 444 basic_istream<_CharT, _Traits>::operator>>(unsigned long& __n) 445 { 446 #ifndef _LIBCPP_NO_EXCEPTIONS 447 try 448 { 449 #endif // _LIBCPP_NO_EXCEPTIONS 450 sentry __s(*this); 451 if (__s) 452 { 453 typedef istreambuf_iterator<char_type, traits_type> _Ip; 454 typedef num_get<char_type, _Ip> _Fp; 455 ios_base::iostate __err = ios_base::goodbit; 456 use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n); 457 this->setstate(__err); 458 } 459 #ifndef _LIBCPP_NO_EXCEPTIONS 460 } 461 catch (...) 462 { 463 this->__set_badbit_and_consider_rethrow(); 464 } 465 #endif // _LIBCPP_NO_EXCEPTIONS 466 return *this; 467 } 468 469 template <class _CharT, class _Traits> 470 basic_istream<_CharT, _Traits>& 471 basic_istream<_CharT, _Traits>::operator>>(long long& __n) 472 { 473 #ifndef _LIBCPP_NO_EXCEPTIONS 474 try 475 { 476 #endif // _LIBCPP_NO_EXCEPTIONS 477 sentry __s(*this); 478 if (__s) 479 { 480 typedef istreambuf_iterator<char_type, traits_type> _Ip; 481 typedef num_get<char_type, _Ip> _Fp; 482 ios_base::iostate __err = ios_base::goodbit; 483 use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n); 484 this->setstate(__err); 485 } 486 #ifndef _LIBCPP_NO_EXCEPTIONS 487 } 488 catch (...) 489 { 490 this->__set_badbit_and_consider_rethrow(); 491 } 492 #endif // _LIBCPP_NO_EXCEPTIONS 493 return *this; 494 } 495 496 template <class _CharT, class _Traits> 497 basic_istream<_CharT, _Traits>& 498 basic_istream<_CharT, _Traits>::operator>>(unsigned long long& __n) 499 { 500 #ifndef _LIBCPP_NO_EXCEPTIONS 501 try 502 { 503 #endif // _LIBCPP_NO_EXCEPTIONS 504 sentry __s(*this); 505 if (__s) 506 { 507 typedef istreambuf_iterator<char_type, traits_type> _Ip; 508 typedef num_get<char_type, _Ip> _Fp; 509 ios_base::iostate __err = ios_base::goodbit; 510 use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n); 511 this->setstate(__err); 512 } 513 #ifndef _LIBCPP_NO_EXCEPTIONS 514 } 515 catch (...) 516 { 517 this->__set_badbit_and_consider_rethrow(); 518 } 519 #endif // _LIBCPP_NO_EXCEPTIONS 520 return *this; 521 } 522 523 template <class _CharT, class _Traits> 524 basic_istream<_CharT, _Traits>& 525 basic_istream<_CharT, _Traits>::operator>>(float& __n) 526 { 527 #ifndef _LIBCPP_NO_EXCEPTIONS 528 try 529 { 530 #endif // _LIBCPP_NO_EXCEPTIONS 531 sentry __s(*this); 532 if (__s) 533 { 534 typedef istreambuf_iterator<char_type, traits_type> _Ip; 535 typedef num_get<char_type, _Ip> _Fp; 536 ios_base::iostate __err = ios_base::goodbit; 537 use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n); 538 this->setstate(__err); 539 } 540 #ifndef _LIBCPP_NO_EXCEPTIONS 541 } 542 catch (...) 543 { 544 this->__set_badbit_and_consider_rethrow(); 545 } 546 #endif // _LIBCPP_NO_EXCEPTIONS 547 return *this; 548 } 549 550 template <class _CharT, class _Traits> 551 basic_istream<_CharT, _Traits>& 552 basic_istream<_CharT, _Traits>::operator>>(double& __n) 553 { 554 #ifndef _LIBCPP_NO_EXCEPTIONS 555 try 556 { 557 #endif // _LIBCPP_NO_EXCEPTIONS 558 sentry __s(*this); 559 if (__s) 560 { 561 typedef istreambuf_iterator<char_type, traits_type> _Ip; 562 typedef num_get<char_type, _Ip> _Fp; 563 ios_base::iostate __err = ios_base::goodbit; 564 use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n); 565 this->setstate(__err); 566 } 567 #ifndef _LIBCPP_NO_EXCEPTIONS 568 } 569 catch (...) 570 { 571 this->__set_badbit_and_consider_rethrow(); 572 } 573 #endif // _LIBCPP_NO_EXCEPTIONS 574 return *this; 575 } 576 577 template <class _CharT, class _Traits> 578 basic_istream<_CharT, _Traits>& 579 basic_istream<_CharT, _Traits>::operator>>(long double& __n) 580 { 581 #ifndef _LIBCPP_NO_EXCEPTIONS 582 try 583 { 584 #endif // _LIBCPP_NO_EXCEPTIONS 585 sentry __s(*this); 586 if (__s) 587 { 588 typedef istreambuf_iterator<char_type, traits_type> _Ip; 589 typedef num_get<char_type, _Ip> _Fp; 590 ios_base::iostate __err = ios_base::goodbit; 591 use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n); 592 this->setstate(__err); 593 } 594 #ifndef _LIBCPP_NO_EXCEPTIONS 595 } 596 catch (...) 597 { 598 this->__set_badbit_and_consider_rethrow(); 599 } 600 #endif // _LIBCPP_NO_EXCEPTIONS 601 return *this; 602 } 603 604 template <class _CharT, class _Traits> 605 basic_istream<_CharT, _Traits>& 606 basic_istream<_CharT, _Traits>::operator>>(bool& __n) 607 { 608 #ifndef _LIBCPP_NO_EXCEPTIONS 609 try 610 { 611 #endif // _LIBCPP_NO_EXCEPTIONS 612 sentry __s(*this); 613 if (__s) 614 { 615 typedef istreambuf_iterator<char_type, traits_type> _Ip; 616 typedef num_get<char_type, _Ip> _Fp; 617 ios_base::iostate __err = ios_base::goodbit; 618 use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n); 619 this->setstate(__err); 620 } 621 #ifndef _LIBCPP_NO_EXCEPTIONS 622 } 623 catch (...) 624 { 625 this->__set_badbit_and_consider_rethrow(); 626 } 627 #endif // _LIBCPP_NO_EXCEPTIONS 628 return *this; 629 } 630 631 template <class _CharT, class _Traits> 632 basic_istream<_CharT, _Traits>& 633 basic_istream<_CharT, _Traits>::operator>>(void*& __n) 634 { 635 #ifndef _LIBCPP_NO_EXCEPTIONS 636 try 637 { 638 #endif // _LIBCPP_NO_EXCEPTIONS 639 sentry __s(*this); 640 if (__s) 641 { 642 typedef istreambuf_iterator<char_type, traits_type> _Ip; 643 typedef num_get<char_type, _Ip> _Fp; 644 ios_base::iostate __err = ios_base::goodbit; 645 use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n); 646 this->setstate(__err); 647 } 648 #ifndef _LIBCPP_NO_EXCEPTIONS 649 } 650 catch (...) 651 { 652 this->__set_badbit_and_consider_rethrow(); 653 } 654 #endif // _LIBCPP_NO_EXCEPTIONS 655 return *this; 656 } 657 658 template <class _CharT, class _Traits> 659 basic_istream<_CharT, _Traits>& 660 basic_istream<_CharT, _Traits>::operator>>(short& __n) 661 { 662 #ifndef _LIBCPP_NO_EXCEPTIONS 663 try 664 { 665 #endif // _LIBCPP_NO_EXCEPTIONS 666 sentry __s(*this); 667 if (__s) 668 { 669 typedef istreambuf_iterator<char_type, traits_type> _Ip; 670 typedef num_get<char_type, _Ip> _Fp; 671 ios_base::iostate __err = ios_base::goodbit; 672 long __temp; 673 use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __temp); 674 if (__temp < numeric_limits<short>::min()) 675 { 676 __err |= ios_base::failbit; 677 __n = numeric_limits<short>::min(); 678 } 679 else if (__temp > numeric_limits<short>::max()) 680 { 681 __err |= ios_base::failbit; 682 __n = numeric_limits<short>::max(); 683 } 684 else 685 __n = static_cast<short>(__temp); 686 this->setstate(__err); 687 } 688 #ifndef _LIBCPP_NO_EXCEPTIONS 689 } 690 catch (...) 691 { 692 this->__set_badbit_and_consider_rethrow(); 693 } 694 #endif // _LIBCPP_NO_EXCEPTIONS 695 return *this; 696 } 697 698 template <class _CharT, class _Traits> 699 basic_istream<_CharT, _Traits>& 700 basic_istream<_CharT, _Traits>::operator>>(int& __n) 701 { 702 #ifndef _LIBCPP_NO_EXCEPTIONS 703 try 704 { 705 #endif // _LIBCPP_NO_EXCEPTIONS 706 sentry __s(*this); 707 if (__s) 708 { 709 typedef istreambuf_iterator<char_type, traits_type> _Ip; 710 typedef num_get<char_type, _Ip> _Fp; 711 ios_base::iostate __err = ios_base::goodbit; 712 long __temp; 713 use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __temp); 714 if (__temp < numeric_limits<int>::min()) 715 { 716 __err |= ios_base::failbit; 717 __n = numeric_limits<int>::min(); 718 } 719 else if (__temp > numeric_limits<int>::max()) 720 { 721 __err |= ios_base::failbit; 722 __n = numeric_limits<int>::max(); 723 } 724 else 725 __n = static_cast<int>(__temp); 726 this->setstate(__err); 727 } 728 #ifndef _LIBCPP_NO_EXCEPTIONS 729 } 730 catch (...) 731 { 732 this->__set_badbit_and_consider_rethrow(); 733 } 734 #endif // _LIBCPP_NO_EXCEPTIONS 735 return *this; 736 } 737 738 template<class _CharT, class _Traits> 739 basic_istream<_CharT, _Traits>& 740 operator>>(basic_istream<_CharT, _Traits>& __is, _CharT* __s) 741 { 742 #ifndef _LIBCPP_NO_EXCEPTIONS 743 try 744 { 745 #endif // _LIBCPP_NO_EXCEPTIONS 746 typename basic_istream<_CharT, _Traits>::sentry __sen(__is); 747 if (__sen) 748 { 749 streamsize __n = __is.width(); 750 if (__n <= 0) 751 __n = numeric_limits<streamsize>::max() / sizeof(_CharT) - 1; 752 streamsize __c = 0; 753 const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__is.getloc()); 754 ios_base::iostate __err = ios_base::goodbit; 755 while (__c < __n-1) 756 { 757 typename _Traits::int_type __i = __is.rdbuf()->sgetc(); 758 if (_Traits::eq_int_type(__i, _Traits::eof())) 759 { 760 __err |= ios_base::eofbit; 761 break; 762 } 763 _CharT __ch = _Traits::to_char_type(__i); 764 if (__ct.is(__ct.space, __ch)) 765 break; 766 *__s++ = __ch; 767 ++__c; 768 __is.rdbuf()->sbumpc(); 769 } 770 *__s = _CharT(); 771 __is.width(0); 772 if (__c == 0) 773 __err |= ios_base::failbit; 774 __is.setstate(__err); 775 } 776 #ifndef _LIBCPP_NO_EXCEPTIONS 777 } 778 catch (...) 779 { 780 __is.__set_badbit_and_consider_rethrow(); 781 } 782 #endif // _LIBCPP_NO_EXCEPTIONS 783 return __is; 784 } 785 786 template<class _Traits> 787 inline _LIBCPP_INLINE_VISIBILITY 788 basic_istream<char, _Traits>& 789 operator>>(basic_istream<char, _Traits>& __is, unsigned char* __s) 790 { 791 return __is >> (char*)__s; 792 } 793 794 template<class _Traits> 795 inline _LIBCPP_INLINE_VISIBILITY 796 basic_istream<char, _Traits>& 797 operator>>(basic_istream<char, _Traits>& __is, signed char* __s) 798 { 799 return __is >> (char*)__s; 800 } 801 802 template<class _CharT, class _Traits> 803 basic_istream<_CharT, _Traits>& 804 operator>>(basic_istream<_CharT, _Traits>& __is, _CharT& __c) 805 { 806 #ifndef _LIBCPP_NO_EXCEPTIONS 807 try 808 { 809 #endif // _LIBCPP_NO_EXCEPTIONS 810 typename basic_istream<_CharT, _Traits>::sentry __sen(__is); 811 if (__sen) 812 { 813 typename _Traits::int_type __i = __is.rdbuf()->sbumpc(); 814 if (_Traits::eq_int_type(__i, _Traits::eof())) 815 __is.setstate(ios_base::eofbit | ios_base::failbit); 816 else 817 __c = _Traits::to_char_type(__i); 818 } 819 #ifndef _LIBCPP_NO_EXCEPTIONS 820 } 821 catch (...) 822 { 823 __is.__set_badbit_and_consider_rethrow(); 824 } 825 #endif // _LIBCPP_NO_EXCEPTIONS 826 return __is; 827 } 828 829 template<class _Traits> 830 inline _LIBCPP_INLINE_VISIBILITY 831 basic_istream<char, _Traits>& 832 operator>>(basic_istream<char, _Traits>& __is, unsigned char& __c) 833 { 834 return __is >> (char&)__c; 835 } 836 837 template<class _Traits> 838 inline _LIBCPP_INLINE_VISIBILITY 839 basic_istream<char, _Traits>& 840 operator>>(basic_istream<char, _Traits>& __is, signed char& __c) 841 { 842 return __is >> (char&)__c; 843 } 844 845 template<class _CharT, class _Traits> 846 basic_istream<_CharT, _Traits>& 847 basic_istream<_CharT, _Traits>::operator>>(basic_streambuf<char_type, traits_type>* __sb) 848 { 849 __gc_ = 0; 850 #ifndef _LIBCPP_NO_EXCEPTIONS 851 try 852 { 853 #endif // _LIBCPP_NO_EXCEPTIONS 854 sentry __s(*this, true); 855 if (__s) 856 { 857 if (__sb) 858 { 859 #ifndef _LIBCPP_NO_EXCEPTIONS 860 try 861 { 862 #endif // _LIBCPP_NO_EXCEPTIONS 863 ios_base::iostate __err = ios_base::goodbit; 864 while (true) 865 { 866 typename traits_type::int_type __i = this->rdbuf()->sgetc(); 867 if (traits_type::eq_int_type(__i, _Traits::eof())) 868 { 869 __err |= ios_base::eofbit; 870 break; 871 } 872 if (traits_type::eq_int_type( 873 __sb->sputc(traits_type::to_char_type(__i)), 874 traits_type::eof())) 875 break; 876 ++__gc_; 877 this->rdbuf()->sbumpc(); 878 } 879 if (__gc_ == 0) 880 __err |= ios_base::failbit; 881 this->setstate(__err); 882 #ifndef _LIBCPP_NO_EXCEPTIONS 883 } 884 catch (...) 885 { 886 if (__gc_ == 0) 887 this->__set_failbit_and_consider_rethrow(); 888 } 889 #endif // _LIBCPP_NO_EXCEPTIONS 890 } 891 else 892 this->setstate(ios_base::failbit); 893 } 894 #ifndef _LIBCPP_NO_EXCEPTIONS 895 } 896 catch (...) 897 { 898 this->__set_badbit_and_consider_rethrow(); 899 } 900 #endif // _LIBCPP_NO_EXCEPTIONS 901 return *this; 902 } 903 904 template<class _CharT, class _Traits> 905 typename basic_istream<_CharT, _Traits>::int_type 906 basic_istream<_CharT, _Traits>::get() 907 { 908 __gc_ = 0; 909 int_type __r = traits_type::eof(); 910 #ifndef _LIBCPP_NO_EXCEPTIONS 911 try 912 { 913 #endif // _LIBCPP_NO_EXCEPTIONS 914 sentry __s(*this, true); 915 if (__s) 916 { 917 __r = this->rdbuf()->sbumpc(); 918 if (traits_type::eq_int_type(__r, traits_type::eof())) 919 this->setstate(ios_base::failbit | ios_base::eofbit); 920 else 921 __gc_ = 1; 922 } 923 #ifndef _LIBCPP_NO_EXCEPTIONS 924 } 925 catch (...) 926 { 927 this->__set_badbit_and_consider_rethrow(); 928 } 929 #endif // _LIBCPP_NO_EXCEPTIONS 930 return __r; 931 } 932 933 template<class _CharT, class _Traits> 934 basic_istream<_CharT, _Traits>& 935 basic_istream<_CharT, _Traits>::get(char_type* __s, streamsize __n, char_type __dlm) 936 { 937 __gc_ = 0; 938 #ifndef _LIBCPP_NO_EXCEPTIONS 939 try 940 { 941 #endif // _LIBCPP_NO_EXCEPTIONS 942 sentry __sen(*this, true); 943 if (__sen) 944 { 945 if (__n > 0) 946 { 947 ios_base::iostate __err = ios_base::goodbit; 948 while (__gc_ < __n-1) 949 { 950 int_type __i = this->rdbuf()->sgetc(); 951 if (traits_type::eq_int_type(__i, traits_type::eof())) 952 { 953 __err |= ios_base::eofbit; 954 break; 955 } 956 char_type __ch = traits_type::to_char_type(__i); 957 if (traits_type::eq(__ch, __dlm)) 958 break; 959 *__s++ = __ch; 960 ++__gc_; 961 this->rdbuf()->sbumpc(); 962 } 963 *__s = char_type(); 964 if (__gc_ == 0) 965 __err |= ios_base::failbit; 966 this->setstate(__err); 967 } 968 else 969 this->setstate(ios_base::failbit); 970 } 971 #ifndef _LIBCPP_NO_EXCEPTIONS 972 } 973 catch (...) 974 { 975 this->__set_badbit_and_consider_rethrow(); 976 } 977 #endif // _LIBCPP_NO_EXCEPTIONS 978 return *this; 979 } 980 981 template<class _CharT, class _Traits> 982 basic_istream<_CharT, _Traits>& 983 basic_istream<_CharT, _Traits>::get(basic_streambuf<char_type, traits_type>& __sb, 984 char_type __dlm) 985 { 986 __gc_ = 0; 987 #ifndef _LIBCPP_NO_EXCEPTIONS 988 try 989 { 990 #endif // _LIBCPP_NO_EXCEPTIONS 991 sentry __sen(*this, true); 992 if (__sen) 993 { 994 ios_base::iostate __err = ios_base::goodbit; 995 #ifndef _LIBCPP_NO_EXCEPTIONS 996 try 997 { 998 #endif // _LIBCPP_NO_EXCEPTIONS 999 while (true) 1000 { 1001 typename traits_type::int_type __i = this->rdbuf()->sgetc(); 1002 if (traits_type::eq_int_type(__i, traits_type::eof())) 1003 { 1004 __err |= ios_base::eofbit; 1005 break; 1006 } 1007 char_type __ch = traits_type::to_char_type(__i); 1008 if (traits_type::eq(__ch, __dlm)) 1009 break; 1010 if (traits_type::eq_int_type(__sb.sputc(__ch), traits_type::eof())) 1011 break; 1012 ++__gc_; 1013 this->rdbuf()->sbumpc(); 1014 } 1015 #ifndef _LIBCPP_NO_EXCEPTIONS 1016 } 1017 catch (...) 1018 { 1019 } 1020 #endif // _LIBCPP_NO_EXCEPTIONS 1021 if (__gc_ == 0) 1022 __err |= ios_base::failbit; 1023 this->setstate(__err); 1024 } 1025 #ifndef _LIBCPP_NO_EXCEPTIONS 1026 } 1027 catch (...) 1028 { 1029 this->__set_badbit_and_consider_rethrow(); 1030 } 1031 #endif // _LIBCPP_NO_EXCEPTIONS 1032 return *this; 1033 } 1034 1035 template<class _CharT, class _Traits> 1036 basic_istream<_CharT, _Traits>& 1037 basic_istream<_CharT, _Traits>::getline(char_type* __s, streamsize __n, char_type __dlm) 1038 { 1039 __gc_ = 0; 1040 #ifndef _LIBCPP_NO_EXCEPTIONS 1041 try 1042 { 1043 #endif // _LIBCPP_NO_EXCEPTIONS 1044 sentry __sen(*this, true); 1045 if (__sen) 1046 { 1047 ios_base::iostate __err = ios_base::goodbit; 1048 while (true) 1049 { 1050 typename traits_type::int_type __i = this->rdbuf()->sgetc(); 1051 if (traits_type::eq_int_type(__i, traits_type::eof())) 1052 { 1053 __err |= ios_base::eofbit; 1054 break; 1055 } 1056 char_type __ch = traits_type::to_char_type(__i); 1057 if (traits_type::eq(__ch, __dlm)) 1058 { 1059 this->rdbuf()->sbumpc(); 1060 ++__gc_; 1061 break; 1062 } 1063 if (__gc_ >= __n-1) 1064 { 1065 __err |= ios_base::failbit; 1066 break; 1067 } 1068 *__s++ = __ch; 1069 this->rdbuf()->sbumpc(); 1070 ++__gc_; 1071 } 1072 if (__n > 0) 1073 *__s = char_type(); 1074 if (__gc_ == 0) 1075 __err |= ios_base::failbit; 1076 this->setstate(__err); 1077 } 1078 #ifndef _LIBCPP_NO_EXCEPTIONS 1079 } 1080 catch (...) 1081 { 1082 this->__set_badbit_and_consider_rethrow(); 1083 } 1084 #endif // _LIBCPP_NO_EXCEPTIONS 1085 return *this; 1086 } 1087 1088 template<class _CharT, class _Traits> 1089 basic_istream<_CharT, _Traits>& 1090 basic_istream<_CharT, _Traits>::ignore(streamsize __n, int_type __dlm) 1091 { 1092 __gc_ = 0; 1093 #ifndef _LIBCPP_NO_EXCEPTIONS 1094 try 1095 { 1096 #endif // _LIBCPP_NO_EXCEPTIONS 1097 sentry __sen(*this, true); 1098 if (__sen) 1099 { 1100 ios_base::iostate __err = ios_base::goodbit; 1101 if (__n == numeric_limits<streamsize>::max()) 1102 { 1103 while (true) 1104 { 1105 typename traits_type::int_type __i = this->rdbuf()->sbumpc(); 1106 if (traits_type::eq_int_type(__i, traits_type::eof())) 1107 { 1108 __err |= ios_base::eofbit; 1109 break; 1110 } 1111 ++__gc_; 1112 if (traits_type::eq_int_type(__i, __dlm)) 1113 break; 1114 } 1115 } 1116 else 1117 { 1118 while (__gc_ < __n) 1119 { 1120 typename traits_type::int_type __i = this->rdbuf()->sbumpc(); 1121 if (traits_type::eq_int_type(__i, traits_type::eof())) 1122 { 1123 __err |= ios_base::eofbit; 1124 break; 1125 } 1126 ++__gc_; 1127 if (traits_type::eq_int_type(__i, __dlm)) 1128 break; 1129 } 1130 } 1131 this->setstate(__err); 1132 } 1133 #ifndef _LIBCPP_NO_EXCEPTIONS 1134 } 1135 catch (...) 1136 { 1137 this->__set_badbit_and_consider_rethrow(); 1138 } 1139 #endif // _LIBCPP_NO_EXCEPTIONS 1140 return *this; 1141 } 1142 1143 template<class _CharT, class _Traits> 1144 typename basic_istream<_CharT, _Traits>::int_type 1145 basic_istream<_CharT, _Traits>::peek() 1146 { 1147 __gc_ = 0; 1148 int_type __r = traits_type::eof(); 1149 #ifndef _LIBCPP_NO_EXCEPTIONS 1150 try 1151 { 1152 #endif // _LIBCPP_NO_EXCEPTIONS 1153 sentry __sen(*this, true); 1154 if (__sen) 1155 { 1156 __r = this->rdbuf()->sgetc(); 1157 if (traits_type::eq_int_type(__r, traits_type::eof())) 1158 this->setstate(ios_base::eofbit); 1159 } 1160 #ifndef _LIBCPP_NO_EXCEPTIONS 1161 } 1162 catch (...) 1163 { 1164 this->__set_badbit_and_consider_rethrow(); 1165 } 1166 #endif // _LIBCPP_NO_EXCEPTIONS 1167 return __r; 1168 } 1169 1170 template<class _CharT, class _Traits> 1171 basic_istream<_CharT, _Traits>& 1172 basic_istream<_CharT, _Traits>::read(char_type* __s, streamsize __n) 1173 { 1174 __gc_ = 0; 1175 #ifndef _LIBCPP_NO_EXCEPTIONS 1176 try 1177 { 1178 #endif // _LIBCPP_NO_EXCEPTIONS 1179 sentry __sen(*this, true); 1180 if (__sen) 1181 { 1182 __gc_ = this->rdbuf()->sgetn(__s, __n); 1183 if (__gc_ != __n) 1184 this->setstate(ios_base::failbit | ios_base::eofbit); 1185 } 1186 else 1187 this->setstate(ios_base::failbit); 1188 #ifndef _LIBCPP_NO_EXCEPTIONS 1189 } 1190 catch (...) 1191 { 1192 this->__set_badbit_and_consider_rethrow(); 1193 } 1194 #endif // _LIBCPP_NO_EXCEPTIONS 1195 return *this; 1196 } 1197 1198 template<class _CharT, class _Traits> 1199 streamsize 1200 basic_istream<_CharT, _Traits>::readsome(char_type* __s, streamsize __n) 1201 { 1202 __gc_ = 0; 1203 #ifndef _LIBCPP_NO_EXCEPTIONS 1204 try 1205 { 1206 #endif // _LIBCPP_NO_EXCEPTIONS 1207 sentry __sen(*this, true); 1208 if (__sen) 1209 { 1210 streamsize __c = this->rdbuf()->in_avail(); 1211 switch (__c) 1212 { 1213 case -1: 1214 this->setstate(ios_base::eofbit); 1215 break; 1216 case 0: 1217 break; 1218 default: 1219 read(__s, _VSTD::min(__c, __n)); 1220 break; 1221 } 1222 } 1223 else 1224 this->setstate(ios_base::failbit); 1225 #ifndef _LIBCPP_NO_EXCEPTIONS 1226 } 1227 catch (...) 1228 { 1229 this->__set_badbit_and_consider_rethrow(); 1230 } 1231 #endif // _LIBCPP_NO_EXCEPTIONS 1232 return __gc_; 1233 } 1234 1235 template<class _CharT, class _Traits> 1236 basic_istream<_CharT, _Traits>& 1237 basic_istream<_CharT, _Traits>::putback(char_type __c) 1238 { 1239 __gc_ = 0; 1240 #ifndef _LIBCPP_NO_EXCEPTIONS 1241 try 1242 { 1243 #endif // _LIBCPP_NO_EXCEPTIONS 1244 this->clear(this->rdstate() & ~ios_base::eofbit); 1245 sentry __sen(*this, true); 1246 if (__sen) 1247 { 1248 if (this->rdbuf() == 0 || this->rdbuf()->sputbackc(__c) == traits_type::eof()) 1249 this->setstate(ios_base::badbit); 1250 } 1251 else 1252 this->setstate(ios_base::failbit); 1253 #ifndef _LIBCPP_NO_EXCEPTIONS 1254 } 1255 catch (...) 1256 { 1257 this->__set_badbit_and_consider_rethrow(); 1258 } 1259 #endif // _LIBCPP_NO_EXCEPTIONS 1260 return *this; 1261 } 1262 1263 template<class _CharT, class _Traits> 1264 basic_istream<_CharT, _Traits>& 1265 basic_istream<_CharT, _Traits>::unget() 1266 { 1267 __gc_ = 0; 1268 #ifndef _LIBCPP_NO_EXCEPTIONS 1269 try 1270 { 1271 #endif // _LIBCPP_NO_EXCEPTIONS 1272 this->clear(this->rdstate() & ~ios_base::eofbit); 1273 sentry __sen(*this, true); 1274 if (__sen) 1275 { 1276 if (this->rdbuf() == 0 || this->rdbuf()->sungetc() == traits_type::eof()) 1277 this->setstate(ios_base::badbit); 1278 } 1279 else 1280 this->setstate(ios_base::failbit); 1281 #ifndef _LIBCPP_NO_EXCEPTIONS 1282 } 1283 catch (...) 1284 { 1285 this->__set_badbit_and_consider_rethrow(); 1286 } 1287 #endif // _LIBCPP_NO_EXCEPTIONS 1288 return *this; 1289 } 1290 1291 template<class _CharT, class _Traits> 1292 int 1293 basic_istream<_CharT, _Traits>::sync() 1294 { 1295 int __r = 0; 1296 #ifndef _LIBCPP_NO_EXCEPTIONS 1297 try 1298 { 1299 #endif // _LIBCPP_NO_EXCEPTIONS 1300 sentry __sen(*this, true); 1301 if (__sen) 1302 { 1303 if (this->rdbuf() == 0) 1304 return -1; 1305 if (this->rdbuf()->pubsync() == -1) 1306 { 1307 this->setstate(ios_base::badbit); 1308 return -1; 1309 } 1310 } 1311 #ifndef _LIBCPP_NO_EXCEPTIONS 1312 } 1313 catch (...) 1314 { 1315 this->__set_badbit_and_consider_rethrow(); 1316 } 1317 #endif // _LIBCPP_NO_EXCEPTIONS 1318 return __r; 1319 } 1320 1321 template<class _CharT, class _Traits> 1322 typename basic_istream<_CharT, _Traits>::pos_type 1323 basic_istream<_CharT, _Traits>::tellg() 1324 { 1325 pos_type __r(-1); 1326 #ifndef _LIBCPP_NO_EXCEPTIONS 1327 try 1328 { 1329 #endif // _LIBCPP_NO_EXCEPTIONS 1330 sentry __sen(*this, true); 1331 if (__sen) 1332 __r = this->rdbuf()->pubseekoff(0, ios_base::cur, ios_base::in); 1333 #ifndef _LIBCPP_NO_EXCEPTIONS 1334 } 1335 catch (...) 1336 { 1337 this->__set_badbit_and_consider_rethrow(); 1338 } 1339 #endif // _LIBCPP_NO_EXCEPTIONS 1340 return __r; 1341 } 1342 1343 template<class _CharT, class _Traits> 1344 basic_istream<_CharT, _Traits>& 1345 basic_istream<_CharT, _Traits>::seekg(pos_type __pos) 1346 { 1347 #ifndef _LIBCPP_NO_EXCEPTIONS 1348 try 1349 { 1350 #endif // _LIBCPP_NO_EXCEPTIONS 1351 this->clear(this->rdstate() & ~ios_base::eofbit); 1352 sentry __sen(*this, true); 1353 if (__sen) 1354 { 1355 if (this->rdbuf()->pubseekpos(__pos, ios_base::in) == pos_type(-1)) 1356 this->setstate(ios_base::failbit); 1357 } 1358 #ifndef _LIBCPP_NO_EXCEPTIONS 1359 } 1360 catch (...) 1361 { 1362 this->__set_badbit_and_consider_rethrow(); 1363 } 1364 #endif // _LIBCPP_NO_EXCEPTIONS 1365 return *this; 1366 } 1367 1368 template<class _CharT, class _Traits> 1369 basic_istream<_CharT, _Traits>& 1370 basic_istream<_CharT, _Traits>::seekg(off_type __off, ios_base::seekdir __dir) 1371 { 1372 #ifndef _LIBCPP_NO_EXCEPTIONS 1373 try 1374 { 1375 #endif // _LIBCPP_NO_EXCEPTIONS 1376 this->clear(this->rdstate() & ~ios_base::eofbit); 1377 sentry __sen(*this, true); 1378 if (__sen) 1379 { 1380 if (this->rdbuf()->pubseekoff(__off, __dir, ios_base::in) == pos_type(-1)) 1381 this->setstate(ios_base::failbit); 1382 } 1383 #ifndef _LIBCPP_NO_EXCEPTIONS 1384 } 1385 catch (...) 1386 { 1387 this->__set_badbit_and_consider_rethrow(); 1388 } 1389 #endif // _LIBCPP_NO_EXCEPTIONS 1390 return *this; 1391 } 1392 1393 template <class _CharT, class _Traits> 1394 basic_istream<_CharT, _Traits>& 1395 ws(basic_istream<_CharT, _Traits>& __is) 1396 { 1397 #ifndef _LIBCPP_NO_EXCEPTIONS 1398 try 1399 { 1400 #endif // _LIBCPP_NO_EXCEPTIONS 1401 typename basic_istream<_CharT, _Traits>::sentry __sen(__is, true); 1402 if (__sen) 1403 { 1404 const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__is.getloc()); 1405 while (true) 1406 { 1407 typename _Traits::int_type __i = __is.rdbuf()->sgetc(); 1408 if (_Traits::eq_int_type(__i, _Traits::eof())) 1409 { 1410 __is.setstate(ios_base::eofbit); 1411 break; 1412 } 1413 if (!__ct.is(__ct.space, _Traits::to_char_type(__i))) 1414 break; 1415 __is.rdbuf()->sbumpc(); 1416 } 1417 } 1418 #ifndef _LIBCPP_NO_EXCEPTIONS 1419 } 1420 catch (...) 1421 { 1422 __is.__set_badbit_and_consider_rethrow(); 1423 } 1424 #endif // _LIBCPP_NO_EXCEPTIONS 1425 return __is; 1426 } 1427 1428 #ifndef _LIBCPP_CXX03_LANG 1429 1430 template <class _CharT, class _Traits, class _Tp> 1431 inline _LIBCPP_INLINE_VISIBILITY 1432 basic_istream<_CharT, _Traits>& 1433 operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp&& __x) 1434 { 1435 __is >> _VSTD::forward<_Tp>(__x); 1436 return __is; 1437 } 1438 1439 #endif // _LIBCPP_CXX03_LANG 1440 1441 template <class _CharT, class _Traits> 1442 class _LIBCPP_TEMPLATE_VIS basic_iostream 1443 : public basic_istream<_CharT, _Traits>, 1444 public basic_ostream<_CharT, _Traits> 1445 { 1446 public: 1447 // types: 1448 typedef _CharT char_type; 1449 typedef _Traits traits_type; 1450 typedef typename traits_type::int_type int_type; 1451 typedef typename traits_type::pos_type pos_type; 1452 typedef typename traits_type::off_type off_type; 1453 1454 // constructor/destructor 1455 inline _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 1456 explicit basic_iostream(basic_streambuf<char_type, traits_type>* __sb) 1457 : basic_istream<_CharT, _Traits>(__sb) 1458 {} 1459 1460 virtual ~basic_iostream(); 1461 protected: 1462 #ifndef _LIBCPP_CXX03_LANG 1463 inline _LIBCPP_INLINE_VISIBILITY 1464 basic_iostream(basic_iostream&& __rhs); 1465 1466 // assign/swap 1467 inline _LIBCPP_INLINE_VISIBILITY 1468 basic_iostream& operator=(basic_iostream&& __rhs); 1469 #endif 1470 inline _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 1471 void swap(basic_iostream& __rhs) 1472 { basic_istream<char_type, traits_type>::swap(__rhs); } 1473 public: 1474 }; 1475 1476 #ifndef _LIBCPP_CXX03_LANG 1477 1478 template <class _CharT, class _Traits> 1479 basic_iostream<_CharT, _Traits>::basic_iostream(basic_iostream&& __rhs) 1480 : basic_istream<_CharT, _Traits>(_VSTD::move(__rhs)) 1481 { 1482 } 1483 1484 template <class _CharT, class _Traits> 1485 basic_iostream<_CharT, _Traits>& 1486 basic_iostream<_CharT, _Traits>::operator=(basic_iostream&& __rhs) 1487 { 1488 swap(__rhs); 1489 return *this; 1490 } 1491 1492 #endif // _LIBCPP_CXX03_LANG 1493 1494 template <class _CharT, class _Traits> 1495 basic_iostream<_CharT, _Traits>::~basic_iostream() 1496 { 1497 } 1498 1499 template<class _CharT, class _Traits, class _Allocator> 1500 basic_istream<_CharT, _Traits>& 1501 operator>>(basic_istream<_CharT, _Traits>& __is, 1502 basic_string<_CharT, _Traits, _Allocator>& __str) 1503 { 1504 #ifndef _LIBCPP_NO_EXCEPTIONS 1505 try 1506 { 1507 #endif // _LIBCPP_NO_EXCEPTIONS 1508 typename basic_istream<_CharT, _Traits>::sentry __sen(__is); 1509 if (__sen) 1510 { 1511 __str.clear(); 1512 streamsize __n = __is.width(); 1513 if (__n <= 0) 1514 __n = __str.max_size(); 1515 if (__n <= 0) 1516 __n = numeric_limits<streamsize>::max(); 1517 streamsize __c = 0; 1518 const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__is.getloc()); 1519 ios_base::iostate __err = ios_base::goodbit; 1520 while (__c < __n) 1521 { 1522 typename _Traits::int_type __i = __is.rdbuf()->sgetc(); 1523 if (_Traits::eq_int_type(__i, _Traits::eof())) 1524 { 1525 __err |= ios_base::eofbit; 1526 break; 1527 } 1528 _CharT __ch = _Traits::to_char_type(__i); 1529 if (__ct.is(__ct.space, __ch)) 1530 break; 1531 __str.push_back(__ch); 1532 ++__c; 1533 __is.rdbuf()->sbumpc(); 1534 } 1535 __is.width(0); 1536 if (__c == 0) 1537 __err |= ios_base::failbit; 1538 __is.setstate(__err); 1539 } 1540 else 1541 __is.setstate(ios_base::failbit); 1542 #ifndef _LIBCPP_NO_EXCEPTIONS 1543 } 1544 catch (...) 1545 { 1546 __is.__set_badbit_and_consider_rethrow(); 1547 } 1548 #endif // _LIBCPP_NO_EXCEPTIONS 1549 return __is; 1550 } 1551 1552 template<class _CharT, class _Traits, class _Allocator> 1553 basic_istream<_CharT, _Traits>& 1554 getline(basic_istream<_CharT, _Traits>& __is, 1555 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm) 1556 { 1557 #ifndef _LIBCPP_NO_EXCEPTIONS 1558 try 1559 { 1560 #endif // _LIBCPP_NO_EXCEPTIONS 1561 typename basic_istream<_CharT, _Traits>::sentry __sen(__is, true); 1562 if (__sen) 1563 { 1564 __str.clear(); 1565 ios_base::iostate __err = ios_base::goodbit; 1566 streamsize __extr = 0; 1567 while (true) 1568 { 1569 typename _Traits::int_type __i = __is.rdbuf()->sbumpc(); 1570 if (_Traits::eq_int_type(__i, _Traits::eof())) 1571 { 1572 __err |= ios_base::eofbit; 1573 break; 1574 } 1575 ++__extr; 1576 _CharT __ch = _Traits::to_char_type(__i); 1577 if (_Traits::eq(__ch, __dlm)) 1578 break; 1579 __str.push_back(__ch); 1580 if (__str.size() == __str.max_size()) 1581 { 1582 __err |= ios_base::failbit; 1583 break; 1584 } 1585 } 1586 if (__extr == 0) 1587 __err |= ios_base::failbit; 1588 __is.setstate(__err); 1589 } 1590 #ifndef _LIBCPP_NO_EXCEPTIONS 1591 } 1592 catch (...) 1593 { 1594 __is.__set_badbit_and_consider_rethrow(); 1595 } 1596 #endif // _LIBCPP_NO_EXCEPTIONS 1597 return __is; 1598 } 1599 1600 template<class _CharT, class _Traits, class _Allocator> 1601 inline _LIBCPP_INLINE_VISIBILITY 1602 basic_istream<_CharT, _Traits>& 1603 getline(basic_istream<_CharT, _Traits>& __is, 1604 basic_string<_CharT, _Traits, _Allocator>& __str) 1605 { 1606 return getline(__is, __str, __is.widen('\n')); 1607 } 1608 1609 #ifndef _LIBCPP_CXX03_LANG 1610 1611 template<class _CharT, class _Traits, class _Allocator> 1612 inline _LIBCPP_INLINE_VISIBILITY 1613 basic_istream<_CharT, _Traits>& 1614 getline(basic_istream<_CharT, _Traits>&& __is, 1615 basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm) 1616 { 1617 return getline(__is, __str, __dlm); 1618 } 1619 1620 template<class _CharT, class _Traits, class _Allocator> 1621 inline _LIBCPP_INLINE_VISIBILITY 1622 basic_istream<_CharT, _Traits>& 1623 getline(basic_istream<_CharT, _Traits>&& __is, 1624 basic_string<_CharT, _Traits, _Allocator>& __str) 1625 { 1626 return getline(__is, __str, __is.widen('\n')); 1627 } 1628 1629 #endif // _LIBCPP_CXX03_LANG 1630 1631 template <class _CharT, class _Traits, size_t _Size> 1632 basic_istream<_CharT, _Traits>& 1633 operator>>(basic_istream<_CharT, _Traits>& __is, bitset<_Size>& __x) 1634 { 1635 #ifndef _LIBCPP_NO_EXCEPTIONS 1636 try 1637 { 1638 #endif // _LIBCPP_NO_EXCEPTIONS 1639 typename basic_istream<_CharT, _Traits>::sentry __sen(__is); 1640 if (__sen) 1641 { 1642 basic_string<_CharT, _Traits> __str; 1643 const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__is.getloc()); 1644 size_t __c = 0; 1645 ios_base::iostate __err = ios_base::goodbit; 1646 _CharT __zero = __ct.widen('0'); 1647 _CharT __one = __ct.widen('1'); 1648 while (__c < _Size) 1649 { 1650 typename _Traits::int_type __i = __is.rdbuf()->sgetc(); 1651 if (_Traits::eq_int_type(__i, _Traits::eof())) 1652 { 1653 __err |= ios_base::eofbit; 1654 break; 1655 } 1656 _CharT __ch = _Traits::to_char_type(__i); 1657 if (!_Traits::eq(__ch, __zero) && !_Traits::eq(__ch, __one)) 1658 break; 1659 __str.push_back(__ch); 1660 ++__c; 1661 __is.rdbuf()->sbumpc(); 1662 } 1663 __x = bitset<_Size>(__str); 1664 if (__c == 0) 1665 __err |= ios_base::failbit; 1666 __is.setstate(__err); 1667 } 1668 else 1669 __is.setstate(ios_base::failbit); 1670 #ifndef _LIBCPP_NO_EXCEPTIONS 1671 } 1672 catch (...) 1673 { 1674 __is.__set_badbit_and_consider_rethrow(); 1675 } 1676 #endif // _LIBCPP_NO_EXCEPTIONS 1677 return __is; 1678 } 1679 1680 #ifndef _LIBCPP_AVAILABILITY_NO_STREAMS_EXTERN_TEMPLATE 1681 _LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_istream<char>) 1682 _LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_istream<wchar_t>) 1683 _LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_iostream<char>) 1684 #endif 1685 1686 _LIBCPP_END_NAMESPACE_STD 1687 1688 _LIBCPP_POP_MACROS 1689 1690 #endif // _LIBCPP_ISTREAM 1691
