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 <__assert> // all public C++ headers provide the assertion handler 184#include <__config> 185#include <__utility/swap.h> 186#include <istream> 187#include <ostream> 188#include <string> 189#include <version> 190 191#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 192# pragma GCC system_header 193#endif 194 195_LIBCPP_PUSH_MACROS 196#include <__undef_macros> 197 198 199_LIBCPP_BEGIN_NAMESPACE_STD 200 201// basic_stringbuf 202 203template <class _CharT, class _Traits, class _Allocator> 204class _LIBCPP_TEMPLATE_VIS basic_stringbuf 205 : public basic_streambuf<_CharT, _Traits> 206{ 207public: 208 typedef _CharT char_type; 209 typedef _Traits traits_type; 210 typedef typename traits_type::int_type int_type; 211 typedef typename traits_type::pos_type pos_type; 212 typedef typename traits_type::off_type off_type; 213 typedef _Allocator allocator_type; 214 215 typedef basic_string<char_type, traits_type, allocator_type> string_type; 216 217private: 218 219 string_type __str_; 220 mutable char_type* __hm_; 221 ios_base::openmode __mode_; 222 223public: 224 // 30.8.2.1 [stringbuf.cons], constructors 225 _LIBCPP_INLINE_VISIBILITY 226 basic_stringbuf() 227 : __hm_(nullptr), __mode_(ios_base::in | ios_base::out) {} 228 229 _LIBCPP_INLINE_VISIBILITY 230 explicit basic_stringbuf(ios_base::openmode __wch) 231 : __hm_(nullptr), __mode_(__wch) {} 232 233 _LIBCPP_INLINE_VISIBILITY 234 explicit basic_stringbuf(const string_type& __s, 235 ios_base::openmode __wch = ios_base::in | ios_base::out) 236 : __str_(__s.get_allocator()), __hm_(nullptr), __mode_(__wch) 237 { 238 str(__s); 239 } 240 241 basic_stringbuf(basic_stringbuf&& __rhs); 242 243 // 27.8.1.2 Assign and swap: 244 basic_stringbuf& operator=(basic_stringbuf&& __rhs); 245 void swap(basic_stringbuf& __rhs); 246 247 // 27.8.1.3 Get and set: 248 string_type str() const; 249 void str(const string_type& __s); 250 251protected: 252 // 27.8.1.4 Overridden virtual functions: 253 virtual int_type underflow(); 254 virtual int_type pbackfail(int_type __c = traits_type::eof()); 255 virtual int_type overflow (int_type __c = traits_type::eof()); 256 virtual pos_type seekoff(off_type __off, ios_base::seekdir __way, 257 ios_base::openmode __wch = ios_base::in | ios_base::out); 258 _LIBCPP_INLINE_VISIBILITY 259 virtual pos_type seekpos(pos_type __sp, 260 ios_base::openmode __wch = ios_base::in | ios_base::out) { 261 return seekoff(__sp, ios_base::beg, __wch); 262 } 263}; 264 265template <class _CharT, class _Traits, class _Allocator> 266basic_stringbuf<_CharT, _Traits, _Allocator>::basic_stringbuf(basic_stringbuf&& __rhs) 267 : __mode_(__rhs.__mode_) 268{ 269 char_type* __p = const_cast<char_type*>(__rhs.__str_.data()); 270 ptrdiff_t __binp = -1; 271 ptrdiff_t __ninp = -1; 272 ptrdiff_t __einp = -1; 273 if (__rhs.eback() != nullptr) 274 { 275 __binp = __rhs.eback() - __p; 276 __ninp = __rhs.gptr() - __p; 277 __einp = __rhs.egptr() - __p; 278 } 279 ptrdiff_t __bout = -1; 280 ptrdiff_t __nout = -1; 281 ptrdiff_t __eout = -1; 282 if (__rhs.pbase() != nullptr) 283 { 284 __bout = __rhs.pbase() - __p; 285 __nout = __rhs.pptr() - __p; 286 __eout = __rhs.epptr() - __p; 287 } 288 ptrdiff_t __hm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; 289 __str_ = _VSTD::move(__rhs.__str_); 290 __p = const_cast<char_type*>(__str_.data()); 291 if (__binp != -1) 292 this->setg(__p + __binp, __p + __ninp, __p + __einp); 293 if (__bout != -1) 294 { 295 this->setp(__p + __bout, __p + __eout); 296 this->__pbump(__nout); 297 } 298 __hm_ = __hm == -1 ? nullptr : __p + __hm; 299 __p = const_cast<char_type*>(__rhs.__str_.data()); 300 __rhs.setg(__p, __p, __p); 301 __rhs.setp(__p, __p); 302 __rhs.__hm_ = __p; 303 this->pubimbue(__rhs.getloc()); 304} 305 306template <class _CharT, class _Traits, class _Allocator> 307basic_stringbuf<_CharT, _Traits, _Allocator>& 308basic_stringbuf<_CharT, _Traits, _Allocator>::operator=(basic_stringbuf&& __rhs) 309{ 310 char_type* __p = const_cast<char_type*>(__rhs.__str_.data()); 311 ptrdiff_t __binp = -1; 312 ptrdiff_t __ninp = -1; 313 ptrdiff_t __einp = -1; 314 if (__rhs.eback() != nullptr) 315 { 316 __binp = __rhs.eback() - __p; 317 __ninp = __rhs.gptr() - __p; 318 __einp = __rhs.egptr() - __p; 319 } 320 ptrdiff_t __bout = -1; 321 ptrdiff_t __nout = -1; 322 ptrdiff_t __eout = -1; 323 if (__rhs.pbase() != nullptr) 324 { 325 __bout = __rhs.pbase() - __p; 326 __nout = __rhs.pptr() - __p; 327 __eout = __rhs.epptr() - __p; 328 } 329 ptrdiff_t __hm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; 330 __str_ = _VSTD::move(__rhs.__str_); 331 __p = const_cast<char_type*>(__str_.data()); 332 if (__binp != -1) 333 this->setg(__p + __binp, __p + __ninp, __p + __einp); 334 else 335 this->setg(nullptr, nullptr, nullptr); 336 if (__bout != -1) 337 { 338 this->setp(__p + __bout, __p + __eout); 339 this->__pbump(__nout); 340 } 341 else 342 this->setp(nullptr, nullptr); 343 344 __hm_ = __hm == -1 ? nullptr : __p + __hm; 345 __mode_ = __rhs.__mode_; 346 __p = const_cast<char_type*>(__rhs.__str_.data()); 347 __rhs.setg(__p, __p, __p); 348 __rhs.setp(__p, __p); 349 __rhs.__hm_ = __p; 350 this->pubimbue(__rhs.getloc()); 351 return *this; 352} 353 354template <class _CharT, class _Traits, class _Allocator> 355void 356basic_stringbuf<_CharT, _Traits, _Allocator>::swap(basic_stringbuf& __rhs) 357{ 358 char_type* __p = const_cast<char_type*>(__rhs.__str_.data()); 359 ptrdiff_t __rbinp = -1; 360 ptrdiff_t __rninp = -1; 361 ptrdiff_t __reinp = -1; 362 if (__rhs.eback() != nullptr) 363 { 364 __rbinp = __rhs.eback() - __p; 365 __rninp = __rhs.gptr() - __p; 366 __reinp = __rhs.egptr() - __p; 367 } 368 ptrdiff_t __rbout = -1; 369 ptrdiff_t __rnout = -1; 370 ptrdiff_t __reout = -1; 371 if (__rhs.pbase() != nullptr) 372 { 373 __rbout = __rhs.pbase() - __p; 374 __rnout = __rhs.pptr() - __p; 375 __reout = __rhs.epptr() - __p; 376 } 377 ptrdiff_t __rhm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; 378 __p = const_cast<char_type*>(__str_.data()); 379 ptrdiff_t __lbinp = -1; 380 ptrdiff_t __lninp = -1; 381 ptrdiff_t __leinp = -1; 382 if (this->eback() != nullptr) 383 { 384 __lbinp = this->eback() - __p; 385 __lninp = this->gptr() - __p; 386 __leinp = this->egptr() - __p; 387 } 388 ptrdiff_t __lbout = -1; 389 ptrdiff_t __lnout = -1; 390 ptrdiff_t __leout = -1; 391 if (this->pbase() != nullptr) 392 { 393 __lbout = this->pbase() - __p; 394 __lnout = this->pptr() - __p; 395 __leout = this->epptr() - __p; 396 } 397 ptrdiff_t __lhm = __hm_ == nullptr ? -1 : __hm_ - __p; 398 _VSTD::swap(__mode_, __rhs.__mode_); 399 __str_.swap(__rhs.__str_); 400 __p = const_cast<char_type*>(__str_.data()); 401 if (__rbinp != -1) 402 this->setg(__p + __rbinp, __p + __rninp, __p + __reinp); 403 else 404 this->setg(nullptr, nullptr, nullptr); 405 if (__rbout != -1) 406 { 407 this->setp(__p + __rbout, __p + __reout); 408 this->__pbump(__rnout); 409 } 410 else 411 this->setp(nullptr, nullptr); 412 __hm_ = __rhm == -1 ? nullptr : __p + __rhm; 413 __p = const_cast<char_type*>(__rhs.__str_.data()); 414 if (__lbinp != -1) 415 __rhs.setg(__p + __lbinp, __p + __lninp, __p + __leinp); 416 else 417 __rhs.setg(nullptr, nullptr, nullptr); 418 if (__lbout != -1) 419 { 420 __rhs.setp(__p + __lbout, __p + __leout); 421 __rhs.__pbump(__lnout); 422 } 423 else 424 __rhs.setp(nullptr, nullptr); 425 __rhs.__hm_ = __lhm == -1 ? nullptr : __p + __lhm; 426 locale __tl = __rhs.getloc(); 427 __rhs.pubimbue(this->getloc()); 428 this->pubimbue(__tl); 429} 430 431template <class _CharT, class _Traits, class _Allocator> 432inline _LIBCPP_INLINE_VISIBILITY 433void 434swap(basic_stringbuf<_CharT, _Traits, _Allocator>& __x, 435 basic_stringbuf<_CharT, _Traits, _Allocator>& __y) 436{ 437 __x.swap(__y); 438} 439 440template <class _CharT, class _Traits, class _Allocator> 441basic_string<_CharT, _Traits, _Allocator> 442basic_stringbuf<_CharT, _Traits, _Allocator>::str() const 443{ 444 if (__mode_ & ios_base::out) 445 { 446 if (__hm_ < this->pptr()) 447 __hm_ = this->pptr(); 448 return string_type(this->pbase(), __hm_, __str_.get_allocator()); 449 } 450 else if (__mode_ & ios_base::in) 451 return string_type(this->eback(), this->egptr(), __str_.get_allocator()); 452 return string_type(__str_.get_allocator()); 453} 454 455template <class _CharT, class _Traits, class _Allocator> 456void 457basic_stringbuf<_CharT, _Traits, _Allocator>::str(const string_type& __s) 458{ 459 __str_ = __s; 460 __hm_ = nullptr; 461 if (__mode_ & ios_base::in) 462 { 463 __hm_ = const_cast<char_type*>(__str_.data()) + __str_.size(); 464 this->setg(const_cast<char_type*>(__str_.data()), 465 const_cast<char_type*>(__str_.data()), 466 __hm_); 467 } 468 if (__mode_ & ios_base::out) 469 { 470 typename string_type::size_type __sz = __str_.size(); 471 __hm_ = const_cast<char_type*>(__str_.data()) + __sz; 472 __str_.resize(__str_.capacity()); 473 this->setp(const_cast<char_type*>(__str_.data()), 474 const_cast<char_type*>(__str_.data()) + __str_.size()); 475 if (__mode_ & (ios_base::app | ios_base::ate)) 476 { 477 while (__sz > INT_MAX) 478 { 479 this->pbump(INT_MAX); 480 __sz -= INT_MAX; 481 } 482 if (__sz > 0) 483 this->pbump(__sz); 484 } 485 } 486} 487 488template <class _CharT, class _Traits, class _Allocator> 489typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type 490basic_stringbuf<_CharT, _Traits, _Allocator>::underflow() 491{ 492 if (__hm_ < this->pptr()) 493 __hm_ = this->pptr(); 494 if (__mode_ & ios_base::in) 495 { 496 if (this->egptr() < __hm_) 497 this->setg(this->eback(), this->gptr(), __hm_); 498 if (this->gptr() < this->egptr()) 499 return traits_type::to_int_type(*this->gptr()); 500 } 501 return traits_type::eof(); 502} 503 504template <class _CharT, class _Traits, class _Allocator> 505typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type 506basic_stringbuf<_CharT, _Traits, _Allocator>::pbackfail(int_type __c) 507{ 508 if (__hm_ < this->pptr()) 509 __hm_ = this->pptr(); 510 if (this->eback() < this->gptr()) 511 { 512 if (traits_type::eq_int_type(__c, traits_type::eof())) 513 { 514 this->setg(this->eback(), this->gptr()-1, __hm_); 515 return traits_type::not_eof(__c); 516 } 517 if ((__mode_ & ios_base::out) || 518 traits_type::eq(traits_type::to_char_type(__c), this->gptr()[-1])) 519 { 520 this->setg(this->eback(), this->gptr()-1, __hm_); 521 *this->gptr() = traits_type::to_char_type(__c); 522 return __c; 523 } 524 } 525 return traits_type::eof(); 526} 527 528template <class _CharT, class _Traits, class _Allocator> 529typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type 530basic_stringbuf<_CharT, _Traits, _Allocator>::overflow(int_type __c) 531{ 532 if (!traits_type::eq_int_type(__c, traits_type::eof())) 533 { 534 ptrdiff_t __ninp = this->gptr() - this->eback(); 535 if (this->pptr() == this->epptr()) 536 { 537 if (!(__mode_ & ios_base::out)) 538 return traits_type::eof(); 539#ifndef _LIBCPP_NO_EXCEPTIONS 540 try 541 { 542#endif // _LIBCPP_NO_EXCEPTIONS 543 ptrdiff_t __nout = this->pptr() - this->pbase(); 544 ptrdiff_t __hm = __hm_ - this->pbase(); 545 __str_.push_back(char_type()); 546 __str_.resize(__str_.capacity()); 547 char_type* __p = const_cast<char_type*>(__str_.data()); 548 this->setp(__p, __p + __str_.size()); 549 this->__pbump(__nout); 550 __hm_ = this->pbase() + __hm; 551#ifndef _LIBCPP_NO_EXCEPTIONS 552 } 553 catch (...) 554 { 555 return traits_type::eof(); 556 } 557#endif // _LIBCPP_NO_EXCEPTIONS 558 } 559 __hm_ = _VSTD::max(this->pptr() + 1, __hm_); 560 if (__mode_ & ios_base::in) 561 { 562 char_type* __p = const_cast<char_type*>(__str_.data()); 563 this->setg(__p, __p + __ninp, __hm_); 564 } 565 return this->sputc(traits_type::to_char_type(__c)); 566 } 567 return traits_type::not_eof(__c); 568} 569 570template <class _CharT, class _Traits, class _Allocator> 571typename basic_stringbuf<_CharT, _Traits, _Allocator>::pos_type 572basic_stringbuf<_CharT, _Traits, _Allocator>::seekoff(off_type __off, 573 ios_base::seekdir __way, 574 ios_base::openmode __wch) 575{ 576 if (__hm_ < this->pptr()) 577 __hm_ = this->pptr(); 578 if ((__wch & (ios_base::in | ios_base::out)) == 0) 579 return pos_type(-1); 580 if ((__wch & (ios_base::in | ios_base::out)) == (ios_base::in | ios_base::out) 581 && __way == ios_base::cur) 582 return pos_type(-1); 583 const ptrdiff_t __hm = __hm_ == nullptr ? 0 : __hm_ - __str_.data(); 584 off_type __noff; 585 switch (__way) 586 { 587 case ios_base::beg: 588 __noff = 0; 589 break; 590 case ios_base::cur: 591 if (__wch & ios_base::in) 592 __noff = this->gptr() - this->eback(); 593 else 594 __noff = this->pptr() - this->pbase(); 595 break; 596 case ios_base::end: 597 __noff = __hm; 598 break; 599 default: 600 return pos_type(-1); 601 } 602 __noff += __off; 603 if (__noff < 0 || __hm < __noff) 604 return pos_type(-1); 605 if (__noff != 0) 606 { 607 if ((__wch & ios_base::in) && this->gptr() == nullptr) 608 return pos_type(-1); 609 if ((__wch & ios_base::out) && this->pptr() == nullptr) 610 return pos_type(-1); 611 } 612 if (__wch & ios_base::in) 613 this->setg(this->eback(), this->eback() + __noff, __hm_); 614 if (__wch & ios_base::out) 615 { 616 this->setp(this->pbase(), this->epptr()); 617 this->pbump(__noff); 618 } 619 return pos_type(__noff); 620} 621 622// basic_istringstream 623 624template <class _CharT, class _Traits, class _Allocator> 625class _LIBCPP_TEMPLATE_VIS basic_istringstream 626 : public basic_istream<_CharT, _Traits> 627{ 628public: 629 typedef _CharT char_type; 630 typedef _Traits traits_type; 631 typedef typename traits_type::int_type int_type; 632 typedef typename traits_type::pos_type pos_type; 633 typedef typename traits_type::off_type off_type; 634 typedef _Allocator allocator_type; 635 636 typedef basic_string<char_type, traits_type, allocator_type> string_type; 637 638private: 639 basic_stringbuf<char_type, traits_type, allocator_type> __sb_; 640 641public: 642 // 30.8.3.1 [istringstream.cons], constructors 643 _LIBCPP_INLINE_VISIBILITY 644 basic_istringstream() 645 : basic_istream<_CharT, _Traits>(&__sb_), __sb_(ios_base::in) {} 646 647 _LIBCPP_INLINE_VISIBILITY 648 explicit basic_istringstream(ios_base::openmode __wch) 649 : basic_istream<_CharT, _Traits>(&__sb_), __sb_(__wch | ios_base::in) {} 650 651 _LIBCPP_INLINE_VISIBILITY 652 explicit basic_istringstream(const string_type& __s, 653 ios_base::openmode __wch = ios_base::in) 654 : basic_istream<_CharT, _Traits>(&__sb_) 655 , __sb_(__s, __wch | ios_base::in) 656 { } 657 658 _LIBCPP_INLINE_VISIBILITY 659 basic_istringstream(basic_istringstream&& __rhs) 660 : basic_istream<_CharT, _Traits>(_VSTD::move(__rhs)) 661 , __sb_(_VSTD::move(__rhs.__sb_)) 662 { 663 basic_istream<_CharT, _Traits>::set_rdbuf(&__sb_); 664 } 665 666 // 27.8.2.2 Assign and swap: 667 basic_istringstream& operator=(basic_istringstream&& __rhs) { 668 basic_istream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 669 __sb_ = _VSTD::move(__rhs.__sb_); 670 return *this; 671 } 672 _LIBCPP_INLINE_VISIBILITY 673 void swap(basic_istringstream& __rhs) { 674 basic_istream<char_type, traits_type>::swap(__rhs); 675 __sb_.swap(__rhs.__sb_); 676 } 677 678 // 27.8.2.3 Members: 679 _LIBCPP_INLINE_VISIBILITY 680 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { 681 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_); 682 } 683 _LIBCPP_INLINE_VISIBILITY 684 string_type str() const { 685 return __sb_.str(); 686 } 687 _LIBCPP_INLINE_VISIBILITY 688 void str(const string_type& __s) { 689 __sb_.str(__s); 690 } 691}; 692 693template <class _CharT, class _Traits, class _Allocator> 694inline _LIBCPP_INLINE_VISIBILITY 695void 696swap(basic_istringstream<_CharT, _Traits, _Allocator>& __x, 697 basic_istringstream<_CharT, _Traits, _Allocator>& __y) 698{ 699 __x.swap(__y); 700} 701 702// basic_ostringstream 703 704template <class _CharT, class _Traits, class _Allocator> 705class _LIBCPP_TEMPLATE_VIS basic_ostringstream 706 : public basic_ostream<_CharT, _Traits> 707{ 708public: 709 typedef _CharT char_type; 710 typedef _Traits traits_type; 711 typedef typename traits_type::int_type int_type; 712 typedef typename traits_type::pos_type pos_type; 713 typedef typename traits_type::off_type off_type; 714 typedef _Allocator allocator_type; 715 716 typedef basic_string<char_type, traits_type, allocator_type> string_type; 717 718private: 719 basic_stringbuf<char_type, traits_type, allocator_type> __sb_; 720 721public: 722 // 30.8.4.1 [ostringstream.cons], constructors 723 _LIBCPP_INLINE_VISIBILITY 724 basic_ostringstream() 725 : basic_ostream<_CharT, _Traits>(&__sb_), __sb_(ios_base::out) {} 726 727 _LIBCPP_INLINE_VISIBILITY 728 explicit basic_ostringstream(ios_base::openmode __wch) 729 : basic_ostream<_CharT, _Traits>(&__sb_), __sb_(__wch | ios_base::out) {} 730 731 _LIBCPP_INLINE_VISIBILITY 732 explicit basic_ostringstream(const string_type& __s, 733 ios_base::openmode __wch = ios_base::out) 734 : basic_ostream<_CharT, _Traits>(&__sb_) 735 , __sb_(__s, __wch | ios_base::out) 736 { } 737 738 _LIBCPP_INLINE_VISIBILITY 739 basic_ostringstream(basic_ostringstream&& __rhs) 740 : basic_ostream<_CharT, _Traits>(_VSTD::move(__rhs)) 741 , __sb_(_VSTD::move(__rhs.__sb_)) 742 { 743 basic_ostream<_CharT, _Traits>::set_rdbuf(&__sb_); 744 } 745 746 // 27.8.2.2 Assign and swap: 747 basic_ostringstream& operator=(basic_ostringstream&& __rhs) { 748 basic_ostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 749 __sb_ = _VSTD::move(__rhs.__sb_); 750 return *this; 751 } 752 753 _LIBCPP_INLINE_VISIBILITY 754 void swap(basic_ostringstream& __rhs) { 755 basic_ostream<char_type, traits_type>::swap(__rhs); 756 __sb_.swap(__rhs.__sb_); 757 } 758 759 // 27.8.2.3 Members: 760 _LIBCPP_INLINE_VISIBILITY 761 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { 762 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_); 763 } 764 _LIBCPP_INLINE_VISIBILITY 765 string_type str() const { 766 return __sb_.str(); 767 } 768 _LIBCPP_INLINE_VISIBILITY 769 void str(const string_type& __s) { 770 __sb_.str(__s); 771 } 772}; 773 774template <class _CharT, class _Traits, class _Allocator> 775inline _LIBCPP_INLINE_VISIBILITY 776void 777swap(basic_ostringstream<_CharT, _Traits, _Allocator>& __x, 778 basic_ostringstream<_CharT, _Traits, _Allocator>& __y) 779{ 780 __x.swap(__y); 781} 782 783// basic_stringstream 784 785template <class _CharT, class _Traits, class _Allocator> 786class _LIBCPP_TEMPLATE_VIS basic_stringstream 787 : public basic_iostream<_CharT, _Traits> 788{ 789public: 790 typedef _CharT char_type; 791 typedef _Traits traits_type; 792 typedef typename traits_type::int_type int_type; 793 typedef typename traits_type::pos_type pos_type; 794 typedef typename traits_type::off_type off_type; 795 typedef _Allocator allocator_type; 796 797 typedef basic_string<char_type, traits_type, allocator_type> string_type; 798 799private: 800 basic_stringbuf<char_type, traits_type, allocator_type> __sb_; 801 802public: 803 // 30.8.5.1 [stringstream.cons], constructors 804 _LIBCPP_INLINE_VISIBILITY 805 basic_stringstream() 806 : basic_iostream<_CharT, _Traits>(&__sb_), __sb_(ios_base::in | ios_base::out) {} 807 808 _LIBCPP_INLINE_VISIBILITY 809 explicit basic_stringstream(ios_base::openmode __wch) 810 : basic_iostream<_CharT, _Traits>(&__sb_), __sb_(__wch) {} 811 812 _LIBCPP_INLINE_VISIBILITY 813 explicit basic_stringstream(const string_type& __s, 814 ios_base::openmode __wch = ios_base::in | ios_base::out) 815 : basic_iostream<_CharT, _Traits>(&__sb_) 816 , __sb_(__s, __wch) 817 { } 818 819 _LIBCPP_INLINE_VISIBILITY 820 basic_stringstream(basic_stringstream&& __rhs) 821 : basic_iostream<_CharT, _Traits>(_VSTD::move(__rhs)) 822 , __sb_(_VSTD::move(__rhs.__sb_)) 823 { 824 basic_istream<_CharT, _Traits>::set_rdbuf(&__sb_); 825 } 826 827 // 27.8.2.2 Assign and swap: 828 basic_stringstream& operator=(basic_stringstream&& __rhs) { 829 basic_iostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 830 __sb_ = _VSTD::move(__rhs.__sb_); 831 return *this; 832 } 833 _LIBCPP_INLINE_VISIBILITY 834 void swap(basic_stringstream& __rhs) { 835 basic_iostream<char_type, traits_type>::swap(__rhs); 836 __sb_.swap(__rhs.__sb_); 837 } 838 839 // 27.8.2.3 Members: 840 _LIBCPP_INLINE_VISIBILITY 841 basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { 842 return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_); 843 } 844 _LIBCPP_INLINE_VISIBILITY 845 string_type str() const { 846 return __sb_.str(); 847 } 848 _LIBCPP_INLINE_VISIBILITY 849 void str(const string_type& __s) { 850 __sb_.str(__s); 851 } 852}; 853 854template <class _CharT, class _Traits, class _Allocator> 855inline _LIBCPP_INLINE_VISIBILITY 856void 857swap(basic_stringstream<_CharT, _Traits, _Allocator>& __x, 858 basic_stringstream<_CharT, _Traits, _Allocator>& __y) 859{ 860 __x.swap(__y); 861} 862 863#if defined(_LIBCPP_ABI_ENABLE_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1) 864extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_stringbuf<char>; 865extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_stringstream<char>; 866extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ostringstream<char>; 867extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_istringstream<char>; 868#endif 869 870_LIBCPP_END_NAMESPACE_STD 871 872_LIBCPP_POP_MACROS 873 874#endif // _LIBCPP_SSTREAM 875