1// -*- C++ -*- 2//===--------------------------- sstream ----------------------------------===// 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 <ostream> 185#include <istream> 186#include <string> 187 188#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 189#pragma GCC system_header 190#endif 191 192_LIBCPP_PUSH_MACROS 193#include <__undef_macros> 194 195 196_LIBCPP_BEGIN_NAMESPACE_STD 197 198// basic_stringbuf 199 200template <class _CharT, class _Traits, class _Allocator> 201class _LIBCPP_TEMPLATE_VIS basic_stringbuf 202 : public basic_streambuf<_CharT, _Traits> 203{ 204public: 205 typedef _CharT char_type; 206 typedef _Traits traits_type; 207 typedef typename traits_type::int_type int_type; 208 typedef typename traits_type::pos_type pos_type; 209 typedef typename traits_type::off_type off_type; 210 typedef _Allocator allocator_type; 211 212 typedef basic_string<char_type, traits_type, allocator_type> string_type; 213 214private: 215 216 string_type __str_; 217 mutable char_type* __hm_; 218 ios_base::openmode __mode_; 219 220public: 221 // 30.8.2.1 [stringbuf.cons], constructors 222#ifndef _LIBCPP_CXX03_LANG 223 _LIBCPP_INLINE_VISIBILITY 224 basic_stringbuf() : basic_stringbuf(ios_base::in | ios_base::out) {} 225 226 _LIBCPP_INLINE_VISIBILITY 227 explicit basic_stringbuf(ios_base::openmode __wch) 228 : __hm_(nullptr), __mode_(__wch) {} 229#else 230 _LIBCPP_INLINE_VISIBILITY 231 explicit basic_stringbuf(ios_base::openmode __wch = ios_base::in | 232 ios_base::out) 233 : __hm_(nullptr), __mode_(__wch) {} 234#endif 235 236 _LIBCPP_INLINE_VISIBILITY 237 explicit basic_stringbuf(const string_type& __s, 238 ios_base::openmode __wch = ios_base::in | ios_base::out) 239 : __str_(__s.get_allocator()), __hm_(nullptr), __mode_(__wch) 240 { 241 str(__s); 242 } 243 244 basic_stringbuf(basic_stringbuf&& __rhs); 245 246 // 27.8.1.2 Assign and swap: 247 basic_stringbuf& operator=(basic_stringbuf&& __rhs); 248 void swap(basic_stringbuf& __rhs); 249 250 // 27.8.1.3 Get and set: 251 string_type str() const; 252 void str(const string_type& __s); 253 254protected: 255 // 27.8.1.4 Overridden virtual functions: 256 virtual int_type underflow(); 257 virtual int_type pbackfail(int_type __c = traits_type::eof()); 258 virtual int_type overflow (int_type __c = traits_type::eof()); 259 virtual pos_type seekoff(off_type __off, ios_base::seekdir __way, 260 ios_base::openmode __wch = ios_base::in | ios_base::out); 261 _LIBCPP_INLINE_VISIBILITY 262 virtual pos_type seekpos(pos_type __sp, 263 ios_base::openmode __wch = ios_base::in | ios_base::out) { 264 return seekoff(__sp, ios_base::beg, __wch); 265 } 266}; 267 268template <class _CharT, class _Traits, class _Allocator> 269basic_stringbuf<_CharT, _Traits, _Allocator>::basic_stringbuf(basic_stringbuf&& __rhs) 270 : __mode_(__rhs.__mode_) 271{ 272 char_type* __p = const_cast<char_type*>(__rhs.__str_.data()); 273 ptrdiff_t __binp = -1; 274 ptrdiff_t __ninp = -1; 275 ptrdiff_t __einp = -1; 276 if (__rhs.eback() != nullptr) 277 { 278 __binp = __rhs.eback() - __p; 279 __ninp = __rhs.gptr() - __p; 280 __einp = __rhs.egptr() - __p; 281 } 282 ptrdiff_t __bout = -1; 283 ptrdiff_t __nout = -1; 284 ptrdiff_t __eout = -1; 285 if (__rhs.pbase() != nullptr) 286 { 287 __bout = __rhs.pbase() - __p; 288 __nout = __rhs.pptr() - __p; 289 __eout = __rhs.epptr() - __p; 290 } 291 ptrdiff_t __hm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; 292 __str_ = _VSTD::move(__rhs.__str_); 293 __p = const_cast<char_type*>(__str_.data()); 294 if (__binp != -1) 295 this->setg(__p + __binp, __p + __ninp, __p + __einp); 296 if (__bout != -1) 297 { 298 this->setp(__p + __bout, __p + __eout); 299 this->__pbump(__nout); 300 } 301 __hm_ = __hm == -1 ? nullptr : __p + __hm; 302 __p = const_cast<char_type*>(__rhs.__str_.data()); 303 __rhs.setg(__p, __p, __p); 304 __rhs.setp(__p, __p); 305 __rhs.__hm_ = __p; 306 this->pubimbue(__rhs.getloc()); 307} 308 309template <class _CharT, class _Traits, class _Allocator> 310basic_stringbuf<_CharT, _Traits, _Allocator>& 311basic_stringbuf<_CharT, _Traits, _Allocator>::operator=(basic_stringbuf&& __rhs) 312{ 313 char_type* __p = const_cast<char_type*>(__rhs.__str_.data()); 314 ptrdiff_t __binp = -1; 315 ptrdiff_t __ninp = -1; 316 ptrdiff_t __einp = -1; 317 if (__rhs.eback() != nullptr) 318 { 319 __binp = __rhs.eback() - __p; 320 __ninp = __rhs.gptr() - __p; 321 __einp = __rhs.egptr() - __p; 322 } 323 ptrdiff_t __bout = -1; 324 ptrdiff_t __nout = -1; 325 ptrdiff_t __eout = -1; 326 if (__rhs.pbase() != nullptr) 327 { 328 __bout = __rhs.pbase() - __p; 329 __nout = __rhs.pptr() - __p; 330 __eout = __rhs.epptr() - __p; 331 } 332 ptrdiff_t __hm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; 333 __str_ = _VSTD::move(__rhs.__str_); 334 __p = const_cast<char_type*>(__str_.data()); 335 if (__binp != -1) 336 this->setg(__p + __binp, __p + __ninp, __p + __einp); 337 else 338 this->setg(nullptr, nullptr, nullptr); 339 if (__bout != -1) 340 { 341 this->setp(__p + __bout, __p + __eout); 342 this->__pbump(__nout); 343 } 344 else 345 this->setp(nullptr, nullptr); 346 347 __hm_ = __hm == -1 ? nullptr : __p + __hm; 348 __mode_ = __rhs.__mode_; 349 __p = const_cast<char_type*>(__rhs.__str_.data()); 350 __rhs.setg(__p, __p, __p); 351 __rhs.setp(__p, __p); 352 __rhs.__hm_ = __p; 353 this->pubimbue(__rhs.getloc()); 354 return *this; 355} 356 357template <class _CharT, class _Traits, class _Allocator> 358void 359basic_stringbuf<_CharT, _Traits, _Allocator>::swap(basic_stringbuf& __rhs) 360{ 361 char_type* __p = const_cast<char_type*>(__rhs.__str_.data()); 362 ptrdiff_t __rbinp = -1; 363 ptrdiff_t __rninp = -1; 364 ptrdiff_t __reinp = -1; 365 if (__rhs.eback() != nullptr) 366 { 367 __rbinp = __rhs.eback() - __p; 368 __rninp = __rhs.gptr() - __p; 369 __reinp = __rhs.egptr() - __p; 370 } 371 ptrdiff_t __rbout = -1; 372 ptrdiff_t __rnout = -1; 373 ptrdiff_t __reout = -1; 374 if (__rhs.pbase() != nullptr) 375 { 376 __rbout = __rhs.pbase() - __p; 377 __rnout = __rhs.pptr() - __p; 378 __reout = __rhs.epptr() - __p; 379 } 380 ptrdiff_t __rhm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; 381 __p = const_cast<char_type*>(__str_.data()); 382 ptrdiff_t __lbinp = -1; 383 ptrdiff_t __lninp = -1; 384 ptrdiff_t __leinp = -1; 385 if (this->eback() != nullptr) 386 { 387 __lbinp = this->eback() - __p; 388 __lninp = this->gptr() - __p; 389 __leinp = this->egptr() - __p; 390 } 391 ptrdiff_t __lbout = -1; 392 ptrdiff_t __lnout = -1; 393 ptrdiff_t __leout = -1; 394 if (this->pbase() != nullptr) 395 { 396 __lbout = this->pbase() - __p; 397 __lnout = this->pptr() - __p; 398 __leout = this->epptr() - __p; 399 } 400 ptrdiff_t __lhm = __hm_ == nullptr ? -1 : __hm_ - __p; 401 _VSTD::swap(__mode_, __rhs.__mode_); 402 __str_.swap(__rhs.__str_); 403 __p = const_cast<char_type*>(__str_.data()); 404 if (__rbinp != -1) 405 this->setg(__p + __rbinp, __p + __rninp, __p + __reinp); 406 else 407 this->setg(nullptr, nullptr, nullptr); 408 if (__rbout != -1) 409 { 410 this->setp(__p + __rbout, __p + __reout); 411 this->__pbump(__rnout); 412 } 413 else 414 this->setp(nullptr, nullptr); 415 __hm_ = __rhm == -1 ? nullptr : __p + __rhm; 416 __p = const_cast<char_type*>(__rhs.__str_.data()); 417 if (__lbinp != -1) 418 __rhs.setg(__p + __lbinp, __p + __lninp, __p + __leinp); 419 else 420 __rhs.setg(nullptr, nullptr, nullptr); 421 if (__lbout != -1) 422 { 423 __rhs.setp(__p + __lbout, __p + __leout); 424 __rhs.__pbump(__lnout); 425 } 426 else 427 __rhs.setp(nullptr, nullptr); 428 __rhs.__hm_ = __lhm == -1 ? nullptr : __p + __lhm; 429 locale __tl = __rhs.getloc(); 430 __rhs.pubimbue(this->getloc()); 431 this->pubimbue(__tl); 432} 433 434template <class _CharT, class _Traits, class _Allocator> 435inline _LIBCPP_INLINE_VISIBILITY 436void 437swap(basic_stringbuf<_CharT, _Traits, _Allocator>& __x, 438 basic_stringbuf<_CharT, _Traits, _Allocator>& __y) 439{ 440 __x.swap(__y); 441} 442 443template <class _CharT, class _Traits, class _Allocator> 444basic_string<_CharT, _Traits, _Allocator> 445basic_stringbuf<_CharT, _Traits, _Allocator>::str() const 446{ 447 if (__mode_ & ios_base::out) 448 { 449 if (__hm_ < this->pptr()) 450 __hm_ = this->pptr(); 451 return string_type(this->pbase(), __hm_, __str_.get_allocator()); 452 } 453 else if (__mode_ & ios_base::in) 454 return string_type(this->eback(), this->egptr(), __str_.get_allocator()); 455 return string_type(__str_.get_allocator()); 456} 457 458template <class _CharT, class _Traits, class _Allocator> 459void 460basic_stringbuf<_CharT, _Traits, _Allocator>::str(const string_type& __s) 461{ 462 __str_ = __s; 463 __hm_ = nullptr; 464 if (__mode_ & ios_base::in) 465 { 466 __hm_ = const_cast<char_type*>(__str_.data()) + __str_.size(); 467 this->setg(const_cast<char_type*>(__str_.data()), 468 const_cast<char_type*>(__str_.data()), 469 __hm_); 470 } 471 if (__mode_ & ios_base::out) 472 { 473 typename string_type::size_type __sz = __str_.size(); 474 __hm_ = const_cast<char_type*>(__str_.data()) + __sz; 475 __str_.resize(__str_.capacity()); 476 this->setp(const_cast<char_type*>(__str_.data()), 477 const_cast<char_type*>(__str_.data()) + __str_.size()); 478 if (__mode_ & (ios_base::app | ios_base::ate)) 479 { 480 while (__sz > INT_MAX) 481 { 482 this->pbump(INT_MAX); 483 __sz -= INT_MAX; 484 } 485 if (__sz > 0) 486 this->pbump(__sz); 487 } 488 } 489} 490 491template <class _CharT, class _Traits, class _Allocator> 492typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type 493basic_stringbuf<_CharT, _Traits, _Allocator>::underflow() 494{ 495 if (__hm_ < this->pptr()) 496 __hm_ = this->pptr(); 497 if (__mode_ & ios_base::in) 498 { 499 if (this->egptr() < __hm_) 500 this->setg(this->eback(), this->gptr(), __hm_); 501 if (this->gptr() < this->egptr()) 502 return traits_type::to_int_type(*this->gptr()); 503 } 504 return traits_type::eof(); 505} 506 507template <class _CharT, class _Traits, class _Allocator> 508typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type 509basic_stringbuf<_CharT, _Traits, _Allocator>::pbackfail(int_type __c) 510{ 511 if (__hm_ < this->pptr()) 512 __hm_ = this->pptr(); 513 if (this->eback() < this->gptr()) 514 { 515 if (traits_type::eq_int_type(__c, traits_type::eof())) 516 { 517 this->setg(this->eback(), this->gptr()-1, __hm_); 518 return traits_type::not_eof(__c); 519 } 520 if ((__mode_ & ios_base::out) || 521 traits_type::eq(traits_type::to_char_type(__c), this->gptr()[-1])) 522 { 523 this->setg(this->eback(), this->gptr()-1, __hm_); 524 *this->gptr() = traits_type::to_char_type(__c); 525 return __c; 526 } 527 } 528 return traits_type::eof(); 529} 530 531template <class _CharT, class _Traits, class _Allocator> 532typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type 533basic_stringbuf<_CharT, _Traits, _Allocator>::overflow(int_type __c) 534{ 535 if (!traits_type::eq_int_type(__c, traits_type::eof())) 536 { 537 ptrdiff_t __ninp = this->gptr() - this->eback(); 538 if (this->pptr() == this->epptr()) 539 { 540 if (!(__mode_ & ios_base::out)) 541 return traits_type::eof(); 542#ifndef _LIBCPP_NO_EXCEPTIONS 543 try 544 { 545#endif // _LIBCPP_NO_EXCEPTIONS 546 ptrdiff_t __nout = this->pptr() - this->pbase(); 547 ptrdiff_t __hm = __hm_ - this->pbase(); 548 __str_.push_back(char_type()); 549 __str_.resize(__str_.capacity()); 550 char_type* __p = const_cast<char_type*>(__str_.data()); 551 this->setp(__p, __p + __str_.size()); 552 this->__pbump(__nout); 553 __hm_ = this->pbase() + __hm; 554#ifndef _LIBCPP_NO_EXCEPTIONS 555 } 556 catch (...) 557 { 558 return traits_type::eof(); 559 } 560#endif // _LIBCPP_NO_EXCEPTIONS 561 } 562 __hm_ = _VSTD::max(this->pptr() + 1, __hm_); 563 if (__mode_ & ios_base::in) 564 { 565 char_type* __p = const_cast<char_type*>(__str_.data()); 566 this->setg(__p, __p + __ninp, __hm_); 567 } 568 return this->sputc(traits_type::to_char_type(__c)); 569 } 570 return traits_type::not_eof(__c); 571} 572 573template <class _CharT, class _Traits, class _Allocator> 574typename basic_stringbuf<_CharT, _Traits, _Allocator>::pos_type 575basic_stringbuf<_CharT, _Traits, _Allocator>::seekoff(off_type __off, 576 ios_base::seekdir __way, 577 ios_base::openmode __wch) 578{ 579 if (__hm_ < this->pptr()) 580 __hm_ = this->pptr(); 581 if ((__wch & (ios_base::in | ios_base::out)) == 0) 582 return pos_type(-1); 583 if ((__wch & (ios_base::in | ios_base::out)) == (ios_base::in | ios_base::out) 584 && __way == ios_base::cur) 585 return pos_type(-1); 586 const ptrdiff_t __hm = __hm_ == nullptr ? 0 : __hm_ - __str_.data(); 587 off_type __noff; 588 switch (__way) 589 { 590 case ios_base::beg: 591 __noff = 0; 592 break; 593 case ios_base::cur: 594 if (__wch & ios_base::in) 595 __noff = this->gptr() - this->eback(); 596 else 597 __noff = this->pptr() - this->pbase(); 598 break; 599 case ios_base::end: 600 __noff = __hm; 601 break; 602 default: 603 return pos_type(-1); 604 } 605 __noff += __off; 606 if (__noff < 0 || __hm < __noff) 607 return pos_type(-1); 608 if (__noff != 0) 609 { 610 if ((__wch & ios_base::in) && this->gptr() == nullptr) 611 return pos_type(-1); 612 if ((__wch & ios_base::out) && this->pptr() == nullptr) 613 return pos_type(-1); 614 } 615 if (__wch & ios_base::in) 616 this->setg(this->eback(), this->eback() + __noff, __hm_); 617 if (__wch & ios_base::out) 618 { 619 this->setp(this->pbase(), this->epptr()); 620 this->pbump(__noff); 621 } 622 return pos_type(__noff); 623} 624 625// basic_istringstream 626 627template <class _CharT, class _Traits, class _Allocator> 628class _LIBCPP_TEMPLATE_VIS basic_istringstream 629 : public basic_istream<_CharT, _Traits> 630{ 631public: 632 typedef _CharT char_type; 633 typedef _Traits traits_type; 634 typedef typename traits_type::int_type int_type; 635 typedef typename traits_type::pos_type pos_type; 636 typedef typename traits_type::off_type off_type; 637 typedef _Allocator allocator_type; 638 639 typedef basic_string<char_type, traits_type, allocator_type> string_type; 640 641private: 642 basic_stringbuf<char_type, traits_type, allocator_type> __sb_; 643 644public: 645 // 30.8.3.1 [istringstream.cons], constructors 646#ifndef _LIBCPP_CXX03_LANG 647 _LIBCPP_INLINE_VISIBILITY 648 basic_istringstream() : basic_istringstream(ios_base::in) {} 649 650 _LIBCPP_INLINE_VISIBILITY 651 explicit basic_istringstream(ios_base::openmode __wch) 652 : basic_istream<_CharT, _Traits>(&__sb_), __sb_(__wch | ios_base::in) {} 653#else 654 _LIBCPP_INLINE_VISIBILITY 655 explicit basic_istringstream(ios_base::openmode __wch = ios_base::in) 656 : basic_istream<_CharT, _Traits>(&__sb_), __sb_(__wch | ios_base::in) {} 657#endif 658 659 _LIBCPP_INLINE_VISIBILITY 660 explicit basic_istringstream(const string_type& __s, 661 ios_base::openmode __wch = ios_base::in) 662 : basic_istream<_CharT, _Traits>(&__sb_) 663 , __sb_(__s, __wch | ios_base::in) 664 { } 665 666 _LIBCPP_INLINE_VISIBILITY 667 basic_istringstream(basic_istringstream&& __rhs) 668 : basic_istream<_CharT, _Traits>(_VSTD::move(__rhs)) 669 , __sb_(_VSTD::move(__rhs.__sb_)) 670 { 671 basic_istream<_CharT, _Traits>::set_rdbuf(&__sb_); 672 } 673 674 // 27.8.2.2 Assign and swap: 675 basic_istringstream& operator=(basic_istringstream&& __rhs) { 676 basic_istream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 677 __sb_ = _VSTD::move(__rhs.__sb_); 678 return *this; 679 } 680 _LIBCPP_INLINE_VISIBILITY 681 void swap(basic_istringstream& __rhs) { 682 basic_istream<char_type, traits_type>::swap(__rhs); 683 __sb_.swap(__rhs.__sb_); 684 } 685 686 // 27.8.2.3 Members: 687 _LIBCPP_INLINE_VISIBILITY 688 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { 689 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_); 690 } 691 _LIBCPP_INLINE_VISIBILITY 692 string_type str() const { 693 return __sb_.str(); 694 } 695 _LIBCPP_INLINE_VISIBILITY 696 void str(const string_type& __s) { 697 __sb_.str(__s); 698 } 699}; 700 701template <class _CharT, class _Traits, class _Allocator> 702inline _LIBCPP_INLINE_VISIBILITY 703void 704swap(basic_istringstream<_CharT, _Traits, _Allocator>& __x, 705 basic_istringstream<_CharT, _Traits, _Allocator>& __y) 706{ 707 __x.swap(__y); 708} 709 710// basic_ostringstream 711 712template <class _CharT, class _Traits, class _Allocator> 713class _LIBCPP_TEMPLATE_VIS basic_ostringstream 714 : public basic_ostream<_CharT, _Traits> 715{ 716public: 717 typedef _CharT char_type; 718 typedef _Traits traits_type; 719 typedef typename traits_type::int_type int_type; 720 typedef typename traits_type::pos_type pos_type; 721 typedef typename traits_type::off_type off_type; 722 typedef _Allocator allocator_type; 723 724 typedef basic_string<char_type, traits_type, allocator_type> string_type; 725 726private: 727 basic_stringbuf<char_type, traits_type, allocator_type> __sb_; 728 729public: 730 // 30.8.4.1 [ostringstream.cons], constructors 731#ifndef _LIBCPP_CXX03_LANG 732 _LIBCPP_INLINE_VISIBILITY 733 basic_ostringstream() : basic_ostringstream(ios_base::out) {} 734 735 _LIBCPP_INLINE_VISIBILITY 736 explicit basic_ostringstream(ios_base::openmode __wch) 737 : basic_ostream<_CharT, _Traits>(&__sb_), 738 __sb_(__wch | ios_base::out) {} 739#else 740 _LIBCPP_INLINE_VISIBILITY 741 explicit basic_ostringstream(ios_base::openmode __wch = ios_base::out) 742 : basic_ostream<_CharT, _Traits>(&__sb_), 743 __sb_(__wch | ios_base::out) {} 744#endif 745 746 _LIBCPP_INLINE_VISIBILITY 747 explicit basic_ostringstream(const string_type& __s, 748 ios_base::openmode __wch = ios_base::out) 749 : basic_ostream<_CharT, _Traits>(&__sb_) 750 , __sb_(__s, __wch | ios_base::out) 751 { } 752 753 _LIBCPP_INLINE_VISIBILITY 754 basic_ostringstream(basic_ostringstream&& __rhs) 755 : basic_ostream<_CharT, _Traits>(_VSTD::move(__rhs)) 756 , __sb_(_VSTD::move(__rhs.__sb_)) 757 { 758 basic_ostream<_CharT, _Traits>::set_rdbuf(&__sb_); 759 } 760 761 // 27.8.2.2 Assign and swap: 762 basic_ostringstream& operator=(basic_ostringstream&& __rhs) { 763 basic_ostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 764 __sb_ = _VSTD::move(__rhs.__sb_); 765 return *this; 766 } 767 768 _LIBCPP_INLINE_VISIBILITY 769 void swap(basic_ostringstream& __rhs) { 770 basic_ostream<char_type, traits_type>::swap(__rhs); 771 __sb_.swap(__rhs.__sb_); 772 } 773 774 // 27.8.2.3 Members: 775 _LIBCPP_INLINE_VISIBILITY 776 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { 777 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_); 778 } 779 _LIBCPP_INLINE_VISIBILITY 780 string_type str() const { 781 return __sb_.str(); 782 } 783 _LIBCPP_INLINE_VISIBILITY 784 void str(const string_type& __s) { 785 __sb_.str(__s); 786 } 787}; 788 789template <class _CharT, class _Traits, class _Allocator> 790inline _LIBCPP_INLINE_VISIBILITY 791void 792swap(basic_ostringstream<_CharT, _Traits, _Allocator>& __x, 793 basic_ostringstream<_CharT, _Traits, _Allocator>& __y) 794{ 795 __x.swap(__y); 796} 797 798// basic_stringstream 799 800template <class _CharT, class _Traits, class _Allocator> 801class _LIBCPP_TEMPLATE_VIS basic_stringstream 802 : public basic_iostream<_CharT, _Traits> 803{ 804public: 805 typedef _CharT char_type; 806 typedef _Traits traits_type; 807 typedef typename traits_type::int_type int_type; 808 typedef typename traits_type::pos_type pos_type; 809 typedef typename traits_type::off_type off_type; 810 typedef _Allocator allocator_type; 811 812 typedef basic_string<char_type, traits_type, allocator_type> string_type; 813 814private: 815 basic_stringbuf<char_type, traits_type, allocator_type> __sb_; 816 817public: 818 // 30.8.5.1 [stringstream.cons], constructors 819#ifndef _LIBCPP_CXX03_LANG 820 _LIBCPP_INLINE_VISIBILITY 821 basic_stringstream() : basic_stringstream(ios_base::in | ios_base::out) {} 822 823 _LIBCPP_INLINE_VISIBILITY 824 explicit basic_stringstream(ios_base::openmode __wch) 825 : basic_iostream<_CharT, _Traits>(&__sb_), __sb_(__wch) {} 826#else 827 _LIBCPP_INLINE_VISIBILITY 828 explicit basic_stringstream(ios_base::openmode __wch = ios_base::in | 829 ios_base::out) 830 : basic_iostream<_CharT, _Traits>(&__sb_), __sb_(__wch) {} 831#endif 832 833 _LIBCPP_INLINE_VISIBILITY 834 explicit basic_stringstream(const string_type& __s, 835 ios_base::openmode __wch = ios_base::in | ios_base::out) 836 : basic_iostream<_CharT, _Traits>(&__sb_) 837 , __sb_(__s, __wch) 838 { } 839 840 _LIBCPP_INLINE_VISIBILITY 841 basic_stringstream(basic_stringstream&& __rhs) 842 : basic_iostream<_CharT, _Traits>(_VSTD::move(__rhs)) 843 , __sb_(_VSTD::move(__rhs.__sb_)) 844 { 845 basic_istream<_CharT, _Traits>::set_rdbuf(&__sb_); 846 } 847 848 // 27.8.2.2 Assign and swap: 849 basic_stringstream& operator=(basic_stringstream&& __rhs) { 850 basic_iostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 851 __sb_ = _VSTD::move(__rhs.__sb_); 852 return *this; 853 } 854 _LIBCPP_INLINE_VISIBILITY 855 void swap(basic_stringstream& __rhs) { 856 basic_iostream<char_type, traits_type>::swap(__rhs); 857 __sb_.swap(__rhs.__sb_); 858 } 859 860 // 27.8.2.3 Members: 861 _LIBCPP_INLINE_VISIBILITY 862 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { 863 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_); 864 } 865 _LIBCPP_INLINE_VISIBILITY 866 string_type str() const { 867 return __sb_.str(); 868 } 869 _LIBCPP_INLINE_VISIBILITY 870 void str(const string_type& __s) { 871 __sb_.str(__s); 872 } 873}; 874 875template <class _CharT, class _Traits, class _Allocator> 876inline _LIBCPP_INLINE_VISIBILITY 877void 878swap(basic_stringstream<_CharT, _Traits, _Allocator>& __x, 879 basic_stringstream<_CharT, _Traits, _Allocator>& __y) 880{ 881 __x.swap(__y); 882} 883 884#if defined(_LIBCPP_ABI_ENABLE_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1) 885_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_stringbuf<char>) 886_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_stringstream<char>) 887_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ostringstream<char>) 888_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_istringstream<char>) 889#endif 890 891_LIBCPP_END_NAMESPACE_STD 892 893_LIBCPP_POP_MACROS 894 895#endif // _LIBCPP_SSTREAM 896