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_SSTREAM 11#define _LIBCPP_SSTREAM 12 13/* 14 sstream synopsis 15 16template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > 17class basic_stringbuf 18 : public basic_streambuf<charT, traits> 19{ 20public: 21 typedef charT char_type; 22 typedef traits traits_type; 23 typedef typename traits_type::int_type int_type; 24 typedef typename traits_type::pos_type pos_type; 25 typedef typename traits_type::off_type off_type; 26 typedef Allocator allocator_type; 27 28 // 27.8.1.1 [stringbuf.cons], constructors: 29 explicit basic_stringbuf(ios_base::openmode which = ios_base::in | ios_base::out); // before C++20 30 basic_stringbuf() : basic_stringbuf(ios_base::in | ios_base::out) {} // C++20 31 explicit basic_stringbuf(ios_base::openmode which); // C++20 32 explicit basic_stringbuf(const basic_string<char_type, traits_type, allocator_type>& str, 33 ios_base::openmode which = ios_base::in | ios_base::out); 34 basic_stringbuf(basic_stringbuf&& rhs); 35 36 // 27.8.1.2 Assign and swap: 37 basic_stringbuf& operator=(basic_stringbuf&& rhs); 38 void swap(basic_stringbuf& rhs); 39 40 // 27.8.1.3 Get and set: 41 basic_string<char_type, traits_type, allocator_type> str() const; 42 void str(const basic_string<char_type, traits_type, allocator_type>& s); 43 44protected: 45 // 27.8.1.4 Overridden virtual functions: 46 virtual int_type underflow(); 47 virtual int_type pbackfail(int_type c = traits_type::eof()); 48 virtual int_type overflow (int_type c = traits_type::eof()); 49 virtual basic_streambuf<char_type, traits_type>* setbuf(char_type*, streamsize); 50 virtual pos_type seekoff(off_type off, ios_base::seekdir way, 51 ios_base::openmode which = ios_base::in | ios_base::out); 52 virtual pos_type seekpos(pos_type sp, 53 ios_base::openmode which = ios_base::in | ios_base::out); 54}; 55 56template <class charT, class traits, class Allocator> 57 void swap(basic_stringbuf<charT, traits, Allocator>& x, 58 basic_stringbuf<charT, traits, Allocator>& y); 59 60typedef basic_stringbuf<char> stringbuf; 61typedef basic_stringbuf<wchar_t> wstringbuf; 62 63template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > 64class basic_istringstream 65 : public basic_istream<charT, traits> 66{ 67public: 68 typedef charT char_type; 69 typedef traits traits_type; 70 typedef typename traits_type::int_type int_type; 71 typedef typename traits_type::pos_type pos_type; 72 typedef typename traits_type::off_type off_type; 73 typedef Allocator allocator_type; 74 75 // 27.8.2.1 Constructors: 76 explicit basic_istringstream(ios_base::openmode which = ios_base::in); // before C++20 77 basic_istringstream() : basic_istringstream(ios_base::in) {} // C++20 78 explicit basic_istringstream(ios_base::openmode which); // C++20 79 80 explicit basic_istringstream(const basic_string<char_type, traits_type,allocator_type>& str, 81 ios_base::openmode which = ios_base::in); 82 basic_istringstream(basic_istringstream&& rhs); 83 84 // 27.8.2.2 Assign and swap: 85 basic_istringstream& operator=(basic_istringstream&& rhs); 86 void swap(basic_istringstream& rhs); 87 88 // 27.8.2.3 Members: 89 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const; 90 basic_string<char_type, traits_type, allocator_type> str() const; 91 void str(const basic_string<char_type, traits_type, allocator_type>& s); 92}; 93 94template <class charT, class traits, class Allocator> 95 void swap(basic_istringstream<charT, traits, Allocator>& x, 96 basic_istringstream<charT, traits, Allocator>& y); 97 98typedef basic_istringstream<char> istringstream; 99typedef basic_istringstream<wchar_t> wistringstream; 100 101template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > 102class basic_ostringstream 103 : public basic_ostream<charT, traits> 104{ 105public: 106 // types: 107 typedef charT char_type; 108 typedef traits traits_type; 109 typedef typename traits_type::int_type int_type; 110 typedef typename traits_type::pos_type pos_type; 111 typedef typename traits_type::off_type off_type; 112 typedef Allocator allocator_type; 113 114 // 27.8.3.1 Constructors/destructor: 115 explicit basic_ostringstream(ios_base::openmode which = ios_base::out); // before C++20 116 basic_ostringstream() : basic_ostringstream(ios_base::out) {} // C++20 117 explicit basic_ostringstream(ios_base::openmode which); // C++20 118 119 explicit basic_ostringstream(const basic_string<char_type, traits_type, allocator_type>& str, 120 ios_base::openmode which = ios_base::out); 121 basic_ostringstream(basic_ostringstream&& rhs); 122 123 // 27.8.3.2 Assign/swap: 124 basic_ostringstream& operator=(basic_ostringstream&& rhs); 125 void swap(basic_ostringstream& rhs); 126 127 // 27.8.3.3 Members: 128 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const; 129 basic_string<char_type, traits_type, allocator_type> str() const; 130 void str(const basic_string<char_type, traits_type, allocator_type>& s); 131}; 132 133template <class charT, class traits, class Allocator> 134 void swap(basic_ostringstream<charT, traits, Allocator>& x, 135 basic_ostringstream<charT, traits, Allocator>& y); 136 137typedef basic_ostringstream<char> ostringstream; 138typedef basic_ostringstream<wchar_t> wostringstream; 139 140template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > 141class basic_stringstream 142 : public basic_iostream<charT, traits> 143{ 144public: 145 // types: 146 typedef charT char_type; 147 typedef traits traits_type; 148 typedef typename traits_type::int_type int_type; 149 typedef typename traits_type::pos_type pos_type; 150 typedef typename traits_type::off_type off_type; 151 typedef Allocator allocator_type; 152 153 // constructors/destructor 154 explicit basic_stringstream(ios_base::openmode which = ios_base::out | ios_base::in); // before C++20 155 basic_stringstream() : basic_stringstream(ios_base::out | ios_base::in) {} // C++20 156 explicit basic_stringstream(ios_base::openmode which); // C++20 157 158 explicit basic_stringstream(const basic_string<char_type, traits_type, allocator_type>& str, 159 ios_base::openmode which = ios_base::out|ios_base::in); 160 basic_stringstream(basic_stringstream&& rhs); 161 162 // 27.8.5.1 Assign/swap: 163 basic_stringstream& operator=(basic_stringstream&& rhs); 164 void swap(basic_stringstream& rhs); 165 166 // Members: 167 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const; 168 basic_string<char_type, traits_type, allocator_type> str() const; 169 void str(const basic_string<char_type, traits_type, allocator_type>& str); 170}; 171 172template <class charT, class traits, class Allocator> 173 void swap(basic_stringstream<charT, traits, Allocator>& x, 174 basic_stringstream<charT, traits, Allocator>& y); 175 176typedef basic_stringstream<char> stringstream; 177typedef basic_stringstream<wchar_t> wstringstream; 178 179} // std 180 181*/ 182 183#include <__config> 184#include <istream> 185#include <ostream> 186#include <string> 187#include <version> 188 189#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 190#pragma GCC system_header 191#endif 192 193_LIBCPP_PUSH_MACROS 194#include <__undef_macros> 195 196 197_LIBCPP_BEGIN_NAMESPACE_STD 198 199// basic_stringbuf 200 201template <class _CharT, class _Traits, class _Allocator> 202class _LIBCPP_TEMPLATE_VIS basic_stringbuf 203 : public basic_streambuf<_CharT, _Traits> 204{ 205public: 206 typedef _CharT char_type; 207 typedef _Traits traits_type; 208 typedef typename traits_type::int_type int_type; 209 typedef typename traits_type::pos_type pos_type; 210 typedef typename traits_type::off_type off_type; 211 typedef _Allocator allocator_type; 212 213 typedef basic_string<char_type, traits_type, allocator_type> string_type; 214 215private: 216 217 string_type __str_; 218 mutable char_type* __hm_; 219 ios_base::openmode __mode_; 220 221public: 222 // 30.8.2.1 [stringbuf.cons], constructors 223 _LIBCPP_INLINE_VISIBILITY 224 basic_stringbuf() 225 : __hm_(nullptr), __mode_(ios_base::in | ios_base::out) {} 226 227 _LIBCPP_INLINE_VISIBILITY 228 explicit basic_stringbuf(ios_base::openmode __wch) 229 : __hm_(nullptr), __mode_(__wch) {} 230 231 _LIBCPP_INLINE_VISIBILITY 232 explicit basic_stringbuf(const string_type& __s, 233 ios_base::openmode __wch = ios_base::in | ios_base::out) 234 : __str_(__s.get_allocator()), __hm_(nullptr), __mode_(__wch) 235 { 236 str(__s); 237 } 238 239 basic_stringbuf(basic_stringbuf&& __rhs); 240 241 // 27.8.1.2 Assign and swap: 242 basic_stringbuf& operator=(basic_stringbuf&& __rhs); 243 void swap(basic_stringbuf& __rhs); 244 245 // 27.8.1.3 Get and set: 246 string_type str() const; 247 void str(const string_type& __s); 248 249protected: 250 // 27.8.1.4 Overridden virtual functions: 251 virtual int_type underflow(); 252 virtual int_type pbackfail(int_type __c = traits_type::eof()); 253 virtual int_type overflow (int_type __c = traits_type::eof()); 254 virtual pos_type seekoff(off_type __off, ios_base::seekdir __way, 255 ios_base::openmode __wch = ios_base::in | ios_base::out); 256 _LIBCPP_INLINE_VISIBILITY 257 virtual pos_type seekpos(pos_type __sp, 258 ios_base::openmode __wch = ios_base::in | ios_base::out) { 259 return seekoff(__sp, ios_base::beg, __wch); 260 } 261}; 262 263template <class _CharT, class _Traits, class _Allocator> 264basic_stringbuf<_CharT, _Traits, _Allocator>::basic_stringbuf(basic_stringbuf&& __rhs) 265 : __mode_(__rhs.__mode_) 266{ 267 char_type* __p = const_cast<char_type*>(__rhs.__str_.data()); 268 ptrdiff_t __binp = -1; 269 ptrdiff_t __ninp = -1; 270 ptrdiff_t __einp = -1; 271 if (__rhs.eback() != nullptr) 272 { 273 __binp = __rhs.eback() - __p; 274 __ninp = __rhs.gptr() - __p; 275 __einp = __rhs.egptr() - __p; 276 } 277 ptrdiff_t __bout = -1; 278 ptrdiff_t __nout = -1; 279 ptrdiff_t __eout = -1; 280 if (__rhs.pbase() != nullptr) 281 { 282 __bout = __rhs.pbase() - __p; 283 __nout = __rhs.pptr() - __p; 284 __eout = __rhs.epptr() - __p; 285 } 286 ptrdiff_t __hm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; 287 __str_ = _VSTD::move(__rhs.__str_); 288 __p = const_cast<char_type*>(__str_.data()); 289 if (__binp != -1) 290 this->setg(__p + __binp, __p + __ninp, __p + __einp); 291 if (__bout != -1) 292 { 293 this->setp(__p + __bout, __p + __eout); 294 this->__pbump(__nout); 295 } 296 __hm_ = __hm == -1 ? nullptr : __p + __hm; 297 __p = const_cast<char_type*>(__rhs.__str_.data()); 298 __rhs.setg(__p, __p, __p); 299 __rhs.setp(__p, __p); 300 __rhs.__hm_ = __p; 301 this->pubimbue(__rhs.getloc()); 302} 303 304template <class _CharT, class _Traits, class _Allocator> 305basic_stringbuf<_CharT, _Traits, _Allocator>& 306basic_stringbuf<_CharT, _Traits, _Allocator>::operator=(basic_stringbuf&& __rhs) 307{ 308 char_type* __p = const_cast<char_type*>(__rhs.__str_.data()); 309 ptrdiff_t __binp = -1; 310 ptrdiff_t __ninp = -1; 311 ptrdiff_t __einp = -1; 312 if (__rhs.eback() != nullptr) 313 { 314 __binp = __rhs.eback() - __p; 315 __ninp = __rhs.gptr() - __p; 316 __einp = __rhs.egptr() - __p; 317 } 318 ptrdiff_t __bout = -1; 319 ptrdiff_t __nout = -1; 320 ptrdiff_t __eout = -1; 321 if (__rhs.pbase() != nullptr) 322 { 323 __bout = __rhs.pbase() - __p; 324 __nout = __rhs.pptr() - __p; 325 __eout = __rhs.epptr() - __p; 326 } 327 ptrdiff_t __hm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; 328 __str_ = _VSTD::move(__rhs.__str_); 329 __p = const_cast<char_type*>(__str_.data()); 330 if (__binp != -1) 331 this->setg(__p + __binp, __p + __ninp, __p + __einp); 332 else 333 this->setg(nullptr, nullptr, nullptr); 334 if (__bout != -1) 335 { 336 this->setp(__p + __bout, __p + __eout); 337 this->__pbump(__nout); 338 } 339 else 340 this->setp(nullptr, nullptr); 341 342 __hm_ = __hm == -1 ? nullptr : __p + __hm; 343 __mode_ = __rhs.__mode_; 344 __p = const_cast<char_type*>(__rhs.__str_.data()); 345 __rhs.setg(__p, __p, __p); 346 __rhs.setp(__p, __p); 347 __rhs.__hm_ = __p; 348 this->pubimbue(__rhs.getloc()); 349 return *this; 350} 351 352template <class _CharT, class _Traits, class _Allocator> 353void 354basic_stringbuf<_CharT, _Traits, _Allocator>::swap(basic_stringbuf& __rhs) 355{ 356 char_type* __p = const_cast<char_type*>(__rhs.__str_.data()); 357 ptrdiff_t __rbinp = -1; 358 ptrdiff_t __rninp = -1; 359 ptrdiff_t __reinp = -1; 360 if (__rhs.eback() != nullptr) 361 { 362 __rbinp = __rhs.eback() - __p; 363 __rninp = __rhs.gptr() - __p; 364 __reinp = __rhs.egptr() - __p; 365 } 366 ptrdiff_t __rbout = -1; 367 ptrdiff_t __rnout = -1; 368 ptrdiff_t __reout = -1; 369 if (__rhs.pbase() != nullptr) 370 { 371 __rbout = __rhs.pbase() - __p; 372 __rnout = __rhs.pptr() - __p; 373 __reout = __rhs.epptr() - __p; 374 } 375 ptrdiff_t __rhm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; 376 __p = const_cast<char_type*>(__str_.data()); 377 ptrdiff_t __lbinp = -1; 378 ptrdiff_t __lninp = -1; 379 ptrdiff_t __leinp = -1; 380 if (this->eback() != nullptr) 381 { 382 __lbinp = this->eback() - __p; 383 __lninp = this->gptr() - __p; 384 __leinp = this->egptr() - __p; 385 } 386 ptrdiff_t __lbout = -1; 387 ptrdiff_t __lnout = -1; 388 ptrdiff_t __leout = -1; 389 if (this->pbase() != nullptr) 390 { 391 __lbout = this->pbase() - __p; 392 __lnout = this->pptr() - __p; 393 __leout = this->epptr() - __p; 394 } 395 ptrdiff_t __lhm = __hm_ == nullptr ? -1 : __hm_ - __p; 396 _VSTD::swap(__mode_, __rhs.__mode_); 397 __str_.swap(__rhs.__str_); 398 __p = const_cast<char_type*>(__str_.data()); 399 if (__rbinp != -1) 400 this->setg(__p + __rbinp, __p + __rninp, __p + __reinp); 401 else 402 this->setg(nullptr, nullptr, nullptr); 403 if (__rbout != -1) 404 { 405 this->setp(__p + __rbout, __p + __reout); 406 this->__pbump(__rnout); 407 } 408 else 409 this->setp(nullptr, nullptr); 410 __hm_ = __rhm == -1 ? nullptr : __p + __rhm; 411 __p = const_cast<char_type*>(__rhs.__str_.data()); 412 if (__lbinp != -1) 413 __rhs.setg(__p + __lbinp, __p + __lninp, __p + __leinp); 414 else 415 __rhs.setg(nullptr, nullptr, nullptr); 416 if (__lbout != -1) 417 { 418 __rhs.setp(__p + __lbout, __p + __leout); 419 __rhs.__pbump(__lnout); 420 } 421 else 422 __rhs.setp(nullptr, nullptr); 423 __rhs.__hm_ = __lhm == -1 ? nullptr : __p + __lhm; 424 locale __tl = __rhs.getloc(); 425 __rhs.pubimbue(this->getloc()); 426 this->pubimbue(__tl); 427} 428 429template <class _CharT, class _Traits, class _Allocator> 430inline _LIBCPP_INLINE_VISIBILITY 431void 432swap(basic_stringbuf<_CharT, _Traits, _Allocator>& __x, 433 basic_stringbuf<_CharT, _Traits, _Allocator>& __y) 434{ 435 __x.swap(__y); 436} 437 438template <class _CharT, class _Traits, class _Allocator> 439basic_string<_CharT, _Traits, _Allocator> 440basic_stringbuf<_CharT, _Traits, _Allocator>::str() const 441{ 442 if (__mode_ & ios_base::out) 443 { 444 if (__hm_ < this->pptr()) 445 __hm_ = this->pptr(); 446 return string_type(this->pbase(), __hm_, __str_.get_allocator()); 447 } 448 else if (__mode_ & ios_base::in) 449 return string_type(this->eback(), this->egptr(), __str_.get_allocator()); 450 return string_type(__str_.get_allocator()); 451} 452 453template <class _CharT, class _Traits, class _Allocator> 454void 455basic_stringbuf<_CharT, _Traits, _Allocator>::str(const string_type& __s) 456{ 457 __str_ = __s; 458 __hm_ = nullptr; 459 if (__mode_ & ios_base::in) 460 { 461 __hm_ = const_cast<char_type*>(__str_.data()) + __str_.size(); 462 this->setg(const_cast<char_type*>(__str_.data()), 463 const_cast<char_type*>(__str_.data()), 464 __hm_); 465 } 466 if (__mode_ & ios_base::out) 467 { 468 typename string_type::size_type __sz = __str_.size(); 469 __hm_ = const_cast<char_type*>(__str_.data()) + __sz; 470 __str_.resize(__str_.capacity()); 471 this->setp(const_cast<char_type*>(__str_.data()), 472 const_cast<char_type*>(__str_.data()) + __str_.size()); 473 if (__mode_ & (ios_base::app | ios_base::ate)) 474 { 475 while (__sz > INT_MAX) 476 { 477 this->pbump(INT_MAX); 478 __sz -= INT_MAX; 479 } 480 if (__sz > 0) 481 this->pbump(__sz); 482 } 483 } 484} 485 486template <class _CharT, class _Traits, class _Allocator> 487typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type 488basic_stringbuf<_CharT, _Traits, _Allocator>::underflow() 489{ 490 if (__hm_ < this->pptr()) 491 __hm_ = this->pptr(); 492 if (__mode_ & ios_base::in) 493 { 494 if (this->egptr() < __hm_) 495 this->setg(this->eback(), this->gptr(), __hm_); 496 if (this->gptr() < this->egptr()) 497 return traits_type::to_int_type(*this->gptr()); 498 } 499 return traits_type::eof(); 500} 501 502template <class _CharT, class _Traits, class _Allocator> 503typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type 504basic_stringbuf<_CharT, _Traits, _Allocator>::pbackfail(int_type __c) 505{ 506 if (__hm_ < this->pptr()) 507 __hm_ = this->pptr(); 508 if (this->eback() < this->gptr()) 509 { 510 if (traits_type::eq_int_type(__c, traits_type::eof())) 511 { 512 this->setg(this->eback(), this->gptr()-1, __hm_); 513 return traits_type::not_eof(__c); 514 } 515 if ((__mode_ & ios_base::out) || 516 traits_type::eq(traits_type::to_char_type(__c), this->gptr()[-1])) 517 { 518 this->setg(this->eback(), this->gptr()-1, __hm_); 519 *this->gptr() = traits_type::to_char_type(__c); 520 return __c; 521 } 522 } 523 return traits_type::eof(); 524} 525 526template <class _CharT, class _Traits, class _Allocator> 527typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type 528basic_stringbuf<_CharT, _Traits, _Allocator>::overflow(int_type __c) 529{ 530 if (!traits_type::eq_int_type(__c, traits_type::eof())) 531 { 532 ptrdiff_t __ninp = this->gptr() - this->eback(); 533 if (this->pptr() == this->epptr()) 534 { 535 if (!(__mode_ & ios_base::out)) 536 return traits_type::eof(); 537#ifndef _LIBCPP_NO_EXCEPTIONS 538 try 539 { 540#endif // _LIBCPP_NO_EXCEPTIONS 541 ptrdiff_t __nout = this->pptr() - this->pbase(); 542 ptrdiff_t __hm = __hm_ - this->pbase(); 543 __str_.push_back(char_type()); 544 __str_.resize(__str_.capacity()); 545 char_type* __p = const_cast<char_type*>(__str_.data()); 546 this->setp(__p, __p + __str_.size()); 547 this->__pbump(__nout); 548 __hm_ = this->pbase() + __hm; 549#ifndef _LIBCPP_NO_EXCEPTIONS 550 } 551 catch (...) 552 { 553 return traits_type::eof(); 554 } 555#endif // _LIBCPP_NO_EXCEPTIONS 556 } 557 __hm_ = _VSTD::max(this->pptr() + 1, __hm_); 558 if (__mode_ & ios_base::in) 559 { 560 char_type* __p = const_cast<char_type*>(__str_.data()); 561 this->setg(__p, __p + __ninp, __hm_); 562 } 563 return this->sputc(traits_type::to_char_type(__c)); 564 } 565 return traits_type::not_eof(__c); 566} 567 568template <class _CharT, class _Traits, class _Allocator> 569typename basic_stringbuf<_CharT, _Traits, _Allocator>::pos_type 570basic_stringbuf<_CharT, _Traits, _Allocator>::seekoff(off_type __off, 571 ios_base::seekdir __way, 572 ios_base::openmode __wch) 573{ 574 if (__hm_ < this->pptr()) 575 __hm_ = this->pptr(); 576 if ((__wch & (ios_base::in | ios_base::out)) == 0) 577 return pos_type(-1); 578 if ((__wch & (ios_base::in | ios_base::out)) == (ios_base::in | ios_base::out) 579 && __way == ios_base::cur) 580 return pos_type(-1); 581 const ptrdiff_t __hm = __hm_ == nullptr ? 0 : __hm_ - __str_.data(); 582 off_type __noff; 583 switch (__way) 584 { 585 case ios_base::beg: 586 __noff = 0; 587 break; 588 case ios_base::cur: 589 if (__wch & ios_base::in) 590 __noff = this->gptr() - this->eback(); 591 else 592 __noff = this->pptr() - this->pbase(); 593 break; 594 case ios_base::end: 595 __noff = __hm; 596 break; 597 default: 598 return pos_type(-1); 599 } 600 __noff += __off; 601 if (__noff < 0 || __hm < __noff) 602 return pos_type(-1); 603 if (__noff != 0) 604 { 605 if ((__wch & ios_base::in) && this->gptr() == nullptr) 606 return pos_type(-1); 607 if ((__wch & ios_base::out) && this->pptr() == nullptr) 608 return pos_type(-1); 609 } 610 if (__wch & ios_base::in) 611 this->setg(this->eback(), this->eback() + __noff, __hm_); 612 if (__wch & ios_base::out) 613 { 614 this->setp(this->pbase(), this->epptr()); 615 this->pbump(__noff); 616 } 617 return pos_type(__noff); 618} 619 620// basic_istringstream 621 622template <class _CharT, class _Traits, class _Allocator> 623class _LIBCPP_TEMPLATE_VIS basic_istringstream 624 : public basic_istream<_CharT, _Traits> 625{ 626public: 627 typedef _CharT char_type; 628 typedef _Traits traits_type; 629 typedef typename traits_type::int_type int_type; 630 typedef typename traits_type::pos_type pos_type; 631 typedef typename traits_type::off_type off_type; 632 typedef _Allocator allocator_type; 633 634 typedef basic_string<char_type, traits_type, allocator_type> string_type; 635 636private: 637 basic_stringbuf<char_type, traits_type, allocator_type> __sb_; 638 639public: 640 // 30.8.3.1 [istringstream.cons], constructors 641 _LIBCPP_INLINE_VISIBILITY 642 basic_istringstream() 643 : basic_istream<_CharT, _Traits>(&__sb_), __sb_(ios_base::in) {} 644 645 _LIBCPP_INLINE_VISIBILITY 646 explicit basic_istringstream(ios_base::openmode __wch) 647 : basic_istream<_CharT, _Traits>(&__sb_), __sb_(__wch | ios_base::in) {} 648 649 _LIBCPP_INLINE_VISIBILITY 650 explicit basic_istringstream(const string_type& __s, 651 ios_base::openmode __wch = ios_base::in) 652 : basic_istream<_CharT, _Traits>(&__sb_) 653 , __sb_(__s, __wch | ios_base::in) 654 { } 655 656 _LIBCPP_INLINE_VISIBILITY 657 basic_istringstream(basic_istringstream&& __rhs) 658 : basic_istream<_CharT, _Traits>(_VSTD::move(__rhs)) 659 , __sb_(_VSTD::move(__rhs.__sb_)) 660 { 661 basic_istream<_CharT, _Traits>::set_rdbuf(&__sb_); 662 } 663 664 // 27.8.2.2 Assign and swap: 665 basic_istringstream& operator=(basic_istringstream&& __rhs) { 666 basic_istream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 667 __sb_ = _VSTD::move(__rhs.__sb_); 668 return *this; 669 } 670 _LIBCPP_INLINE_VISIBILITY 671 void swap(basic_istringstream& __rhs) { 672 basic_istream<char_type, traits_type>::swap(__rhs); 673 __sb_.swap(__rhs.__sb_); 674 } 675 676 // 27.8.2.3 Members: 677 _LIBCPP_INLINE_VISIBILITY 678 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { 679 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_); 680 } 681 _LIBCPP_INLINE_VISIBILITY 682 string_type str() const { 683 return __sb_.str(); 684 } 685 _LIBCPP_INLINE_VISIBILITY 686 void str(const string_type& __s) { 687 __sb_.str(__s); 688 } 689}; 690 691template <class _CharT, class _Traits, class _Allocator> 692inline _LIBCPP_INLINE_VISIBILITY 693void 694swap(basic_istringstream<_CharT, _Traits, _Allocator>& __x, 695 basic_istringstream<_CharT, _Traits, _Allocator>& __y) 696{ 697 __x.swap(__y); 698} 699 700// basic_ostringstream 701 702template <class _CharT, class _Traits, class _Allocator> 703class _LIBCPP_TEMPLATE_VIS basic_ostringstream 704 : public basic_ostream<_CharT, _Traits> 705{ 706public: 707 typedef _CharT char_type; 708 typedef _Traits traits_type; 709 typedef typename traits_type::int_type int_type; 710 typedef typename traits_type::pos_type pos_type; 711 typedef typename traits_type::off_type off_type; 712 typedef _Allocator allocator_type; 713 714 typedef basic_string<char_type, traits_type, allocator_type> string_type; 715 716private: 717 basic_stringbuf<char_type, traits_type, allocator_type> __sb_; 718 719public: 720 // 30.8.4.1 [ostringstream.cons], constructors 721 _LIBCPP_INLINE_VISIBILITY 722 basic_ostringstream() 723 : basic_ostream<_CharT, _Traits>(&__sb_), __sb_(ios_base::out) {} 724 725 _LIBCPP_INLINE_VISIBILITY 726 explicit basic_ostringstream(ios_base::openmode __wch) 727 : basic_ostream<_CharT, _Traits>(&__sb_), __sb_(__wch | ios_base::out) {} 728 729 _LIBCPP_INLINE_VISIBILITY 730 explicit basic_ostringstream(const string_type& __s, 731 ios_base::openmode __wch = ios_base::out) 732 : basic_ostream<_CharT, _Traits>(&__sb_) 733 , __sb_(__s, __wch | ios_base::out) 734 { } 735 736 _LIBCPP_INLINE_VISIBILITY 737 basic_ostringstream(basic_ostringstream&& __rhs) 738 : basic_ostream<_CharT, _Traits>(_VSTD::move(__rhs)) 739 , __sb_(_VSTD::move(__rhs.__sb_)) 740 { 741 basic_ostream<_CharT, _Traits>::set_rdbuf(&__sb_); 742 } 743 744 // 27.8.2.2 Assign and swap: 745 basic_ostringstream& operator=(basic_ostringstream&& __rhs) { 746 basic_ostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 747 __sb_ = _VSTD::move(__rhs.__sb_); 748 return *this; 749 } 750 751 _LIBCPP_INLINE_VISIBILITY 752 void swap(basic_ostringstream& __rhs) { 753 basic_ostream<char_type, traits_type>::swap(__rhs); 754 __sb_.swap(__rhs.__sb_); 755 } 756 757 // 27.8.2.3 Members: 758 _LIBCPP_INLINE_VISIBILITY 759 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { 760 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_); 761 } 762 _LIBCPP_INLINE_VISIBILITY 763 string_type str() const { 764 return __sb_.str(); 765 } 766 _LIBCPP_INLINE_VISIBILITY 767 void str(const string_type& __s) { 768 __sb_.str(__s); 769 } 770}; 771 772template <class _CharT, class _Traits, class _Allocator> 773inline _LIBCPP_INLINE_VISIBILITY 774void 775swap(basic_ostringstream<_CharT, _Traits, _Allocator>& __x, 776 basic_ostringstream<_CharT, _Traits, _Allocator>& __y) 777{ 778 __x.swap(__y); 779} 780 781// basic_stringstream 782 783template <class _CharT, class _Traits, class _Allocator> 784class _LIBCPP_TEMPLATE_VIS basic_stringstream 785 : public basic_iostream<_CharT, _Traits> 786{ 787public: 788 typedef _CharT char_type; 789 typedef _Traits traits_type; 790 typedef typename traits_type::int_type int_type; 791 typedef typename traits_type::pos_type pos_type; 792 typedef typename traits_type::off_type off_type; 793 typedef _Allocator allocator_type; 794 795 typedef basic_string<char_type, traits_type, allocator_type> string_type; 796 797private: 798 basic_stringbuf<char_type, traits_type, allocator_type> __sb_; 799 800public: 801 // 30.8.5.1 [stringstream.cons], constructors 802 _LIBCPP_INLINE_VISIBILITY 803 basic_stringstream() 804 : basic_iostream<_CharT, _Traits>(&__sb_), __sb_(ios_base::in | ios_base::out) {} 805 806 _LIBCPP_INLINE_VISIBILITY 807 explicit basic_stringstream(ios_base::openmode __wch) 808 : basic_iostream<_CharT, _Traits>(&__sb_), __sb_(__wch) {} 809 810 _LIBCPP_INLINE_VISIBILITY 811 explicit basic_stringstream(const string_type& __s, 812 ios_base::openmode __wch = ios_base::in | ios_base::out) 813 : basic_iostream<_CharT, _Traits>(&__sb_) 814 , __sb_(__s, __wch) 815 { } 816 817 _LIBCPP_INLINE_VISIBILITY 818 basic_stringstream(basic_stringstream&& __rhs) 819 : basic_iostream<_CharT, _Traits>(_VSTD::move(__rhs)) 820 , __sb_(_VSTD::move(__rhs.__sb_)) 821 { 822 basic_istream<_CharT, _Traits>::set_rdbuf(&__sb_); 823 } 824 825 // 27.8.2.2 Assign and swap: 826 basic_stringstream& operator=(basic_stringstream&& __rhs) { 827 basic_iostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 828 __sb_ = _VSTD::move(__rhs.__sb_); 829 return *this; 830 } 831 _LIBCPP_INLINE_VISIBILITY 832 void swap(basic_stringstream& __rhs) { 833 basic_iostream<char_type, traits_type>::swap(__rhs); 834 __sb_.swap(__rhs.__sb_); 835 } 836 837 // 27.8.2.3 Members: 838 _LIBCPP_INLINE_VISIBILITY 839 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { 840 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_); 841 } 842 _LIBCPP_INLINE_VISIBILITY 843 string_type str() const { 844 return __sb_.str(); 845 } 846 _LIBCPP_INLINE_VISIBILITY 847 void str(const string_type& __s) { 848 __sb_.str(__s); 849 } 850}; 851 852template <class _CharT, class _Traits, class _Allocator> 853inline _LIBCPP_INLINE_VISIBILITY 854void 855swap(basic_stringstream<_CharT, _Traits, _Allocator>& __x, 856 basic_stringstream<_CharT, _Traits, _Allocator>& __y) 857{ 858 __x.swap(__y); 859} 860 861#if defined(_LIBCPP_ABI_ENABLE_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1) 862_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_stringbuf<char>) 863_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_stringstream<char>) 864_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ostringstream<char>) 865_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_istringstream<char>) 866#endif 867 868_LIBCPP_END_NAMESPACE_STD 869 870_LIBCPP_POP_MACROS 871 872#endif // _LIBCPP_SSTREAM 873