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