1// -*- C++ -*- 2//===-------------------------- iterator ----------------------------------===// 3// 4// The LLVM Compiler Infrastructure 5// 6// This file is dual licensed under the MIT and the University of Illinois Open 7// Source Licenses. See LICENSE.TXT for details. 8// 9//===----------------------------------------------------------------------===// 10 11#ifndef _LIBCPP_ITERATOR 12#define _LIBCPP_ITERATOR 13 14/* 15 iterator synopsis 16 17namespace std 18{ 19 20template<class Iterator> 21struct iterator_traits 22{ 23 typedef typename Iterator::difference_type difference_type; 24 typedef typename Iterator::value_type value_type; 25 typedef typename Iterator::pointer pointer; 26 typedef typename Iterator::reference reference; 27 typedef typename Iterator::iterator_category iterator_category; 28}; 29 30template<class T> 31struct iterator_traits<T*> 32{ 33 typedef ptrdiff_t difference_type; 34 typedef T value_type; 35 typedef T* pointer; 36 typedef T& reference; 37 typedef random_access_iterator_tag iterator_category; 38}; 39 40template<class T> 41struct iterator_traits<const T*> 42{ 43 typedef ptrdiff_t difference_type; 44 typedef T value_type; 45 typedef const T* pointer; 46 typedef const T& reference; 47 typedef random_access_iterator_tag iterator_category; 48}; 49 50template<class Category, class T, class Distance = ptrdiff_t, 51 class Pointer = T*, class Reference = T&> 52struct iterator 53{ 54 typedef T value_type; 55 typedef Distance difference_type; 56 typedef Pointer pointer; 57 typedef Reference reference; 58 typedef Category iterator_category; 59}; 60 61struct input_iterator_tag {}; 62struct output_iterator_tag {}; 63struct forward_iterator_tag : public input_iterator_tag {}; 64struct bidirectional_iterator_tag : public forward_iterator_tag {}; 65struct random_access_iterator_tag : public bidirectional_iterator_tag {}; 66 67// extension: second argument not conforming to C++03 68template <class InputIterator> 69void advance(InputIterator& i, 70 typename iterator_traits<InputIterator>::difference_type n); 71 72template <class InputIterator> 73typename iterator_traits<InputIterator>::difference_type 74distance(InputIterator first, InputIterator last); 75 76template <class Iterator> 77class reverse_iterator 78 : public iterator<typename iterator_traits<Iterator>::iterator_category, 79 typename iterator_traits<Iterator>::value_type, 80 typename iterator_traits<Iterator>::difference_type, 81 typename iterator_traits<Iterator>::pointer, 82 typename iterator_traits<Iterator>::reference> 83{ 84protected: 85 Iterator current; 86public: 87 typedef Iterator iterator_type; 88 typedef typename iterator_traits<Iterator>::difference_type difference_type; 89 typedef typename iterator_traits<Iterator>::reference reference; 90 typedef typename iterator_traits<Iterator>::pointer pointer; 91 92 reverse_iterator(); 93 explicit reverse_iterator(Iterator x); 94 template <class U> reverse_iterator(const reverse_iterator<U>& u); 95 Iterator base() const; 96 reference operator*() const; 97 pointer operator->() const; 98 reverse_iterator& operator++(); 99 reverse_iterator operator++(int); 100 reverse_iterator& operator--(); 101 reverse_iterator operator--(int); 102 reverse_iterator operator+ (difference_type n) const; 103 reverse_iterator& operator+=(difference_type n); 104 reverse_iterator operator- (difference_type n) const; 105 reverse_iterator& operator-=(difference_type n); 106 reference operator[](difference_type n) const; 107}; 108 109template <class Iterator1, class Iterator2> 110bool 111operator==(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 112 113template <class Iterator1, class Iterator2> 114bool 115operator<(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 116 117template <class Iterator1, class Iterator2> 118bool 119operator!=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 120 121template <class Iterator1, class Iterator2> 122bool 123operator>(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 124 125template <class Iterator1, class Iterator2> 126bool 127operator>=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 128 129template <class Iterator1, class Iterator2> 130bool 131operator<=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 132 133template <class Iterator1, class Iterator2> 134typename reverse_iterator<Iterator1>::difference_type 135operator-(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 136 137template <class Iterator> 138reverse_iterator<Iterator> 139operator+(typename reverse_iterator<Iterator>::difference_type n, const reverse_iterator<Iterator>& x); 140 141template <class Container> 142class back_insert_iterator 143{ 144protected: 145 Container* container; 146public: 147 typedef Container container_type; 148 typedef void value_type; 149 typedef void difference_type; 150 typedef back_insert_iterator<Cont>& reference; 151 typedef void pointer; 152 153 explicit back_insert_iterator(Container& x); 154 back_insert_iterator& operator=(const typename Container::value_type& value); 155 back_insert_iterator& operator*(); 156 back_insert_iterator& operator++(); 157 back_insert_iterator operator++(int); 158}; 159 160template <class Container> back_insert_iterator<Container> back_inserter(Container& x); 161 162template <class Container> 163class front_insert_iterator 164{ 165protected: 166 Container* container; 167public: 168 typedef Container container_type; 169 typedef void value_type; 170 typedef void difference_type; 171 typedef front_insert_iterator<Cont>& reference; 172 typedef void pointer; 173 174 explicit front_insert_iterator(Container& x); 175 front_insert_iterator& operator=(const typename Container::value_type& value); 176 front_insert_iterator& operator*(); 177 front_insert_iterator& operator++(); 178 front_insert_iterator operator++(int); 179}; 180 181template <class Container> front_insert_iterator<Container> front_inserter(Container& x); 182 183template <class Container> 184class insert_iterator 185{ 186protected: 187 Container* container; 188 typename Container::iterator iter; 189public: 190 typedef Container container_type; 191 typedef void value_type; 192 typedef void difference_type; 193 typedef insert_iterator<Cont>& reference; 194 typedef void pointer; 195 196 insert_iterator(Container& x, typename Container::iterator i); 197 insert_iterator& operator=(const typename Container::value_type& value); 198 insert_iterator& operator*(); 199 insert_iterator& operator++(); 200 insert_iterator& operator++(int); 201}; 202 203template <class Container, class Iterator> 204insert_iterator<Container> inserter(Container& x, Iterator i); 205 206template <class T, class charT = char, class traits = char_traits<charT>, class Distance = ptrdiff_t> 207class istream_iterator 208 : public iterator<input_iterator_tag, T, Distance, const T*, const T&> 209{ 210public: 211 typedef charT char_type; 212 typedef traits traits_type; 213 typedef basic_istream<charT,traits> istream_type; 214 215 istream_iterator(); 216 istream_iterator(istream_type& s); 217 istream_iterator(const istream_iterator& x); 218 ~istream_iterator(); 219 220 const T& operator*() const; 221 const T* operator->() const; 222 istream_iterator& operator++(); 223 istream_iterator operator++(int); 224}; 225 226template <class T, class charT, class traits, class Distance> 227bool operator==(const istream_iterator<T,charT,traits,Distance>& x, 228 const istream_iterator<T,charT,traits,Distance>& y); 229template <class T, class charT, class traits, class Distance> 230bool operator!=(const istream_iterator<T,charT,traits,Distance>& x, 231 const istream_iterator<T,charT,traits,Distance>& y); 232 233template <class T, class charT = char, class traits = char_traits<charT> > 234class ostream_iterator 235 : public iterator<output_iterator_tag, void, void, void ,void> 236{ 237public: 238 typedef charT char_type; 239 typedef traits traits_type; 240 typedef basic_ostream<charT,traits> ostream_type; 241 242 ostream_iterator(ostream_type& s); 243 ostream_iterator(ostream_type& s, const charT* delimiter); 244 ostream_iterator(const ostream_iterator& x); 245 ~ostream_iterator(); 246 ostream_iterator& operator=(const T& value); 247 248 ostream_iterator& operator*(); 249 ostream_iterator& operator++(); 250 ostream_iterator& operator++(int); 251}; 252 253template<class charT, class traits = char_traits<charT> > 254class istreambuf_iterator 255 : public iterator<input_iterator_tag, charT, 256 typename traits::off_type, unspecified, 257 charT> 258{ 259public: 260 typedef charT char_type; 261 typedef traits traits_type; 262 typedef typename traits::int_type int_type; 263 typedef basic_streambuf<charT,traits> streambuf_type; 264 typedef basic_istream<charT,traits> istream_type; 265 266 istreambuf_iterator() throw(); 267 istreambuf_iterator(istream_type& s) throw(); 268 istreambuf_iterator(streambuf_type* s) throw(); 269 istreambuf_iterator(a-private-type) throw(); 270 271 charT operator*() const; 272 pointer operator->() const; 273 istreambuf_iterator& operator++(); 274 a-private-type operator++(int); 275 276 bool equal(const istreambuf_iterator& b) const; 277}; 278 279template <class charT, class traits> 280bool operator==(const istreambuf_iterator<charT,traits>& a, 281 const istreambuf_iterator<charT,traits>& b); 282template <class charT, class traits> 283bool operator!=(const istreambuf_iterator<charT,traits>& a, 284 const istreambuf_iterator<charT,traits>& b); 285 286template <class charT, class traits = char_traits<charT> > 287class ostreambuf_iterator 288 : public iterator<output_iterator_tag, void, void, void, void> 289{ 290public: 291 typedef charT char_type; 292 typedef traits traits_type; 293 typedef basic_streambuf<charT,traits> streambuf_type; 294 typedef basic_ostream<charT,traits> ostream_type; 295 296 ostreambuf_iterator(ostream_type& s) throw(); 297 ostreambuf_iterator(streambuf_type* s) throw(); 298 ostreambuf_iterator& operator=(charT c); 299 ostreambuf_iterator& operator*(); 300 ostreambuf_iterator& operator++(); 301 ostreambuf_iterator& operator++(int); 302 bool failed() const throw(); 303}; 304 305template <class C> auto begin(C& c) -> decltype(c.begin()); 306template <class C> auto begin(const C& c) -> decltype(c.begin()); 307template <class C> auto end(C& c) -> decltype(c.end()); 308template <class C> auto end(const C& c) -> decltype(c.end()); 309template <class T, size_t N> T* begin(T (&array)[N]); 310template <class T, size_t N> T* end(T (&array)[N]); 311 312} // std 313 314*/ 315 316#include <__config> 317#include <type_traits> 318#include <cstddef> 319#include <iosfwd> 320#ifdef _LIBCPP_DEBUG 321#include <cassert> 322#endif 323 324#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 325#pragma GCC system_header 326#endif 327 328_LIBCPP_BEGIN_NAMESPACE_STD 329 330struct _LIBCPP_VISIBLE input_iterator_tag {}; 331struct _LIBCPP_VISIBLE output_iterator_tag {}; 332struct _LIBCPP_VISIBLE forward_iterator_tag : public input_iterator_tag {}; 333struct _LIBCPP_VISIBLE bidirectional_iterator_tag : public forward_iterator_tag {}; 334struct _LIBCPP_VISIBLE random_access_iterator_tag : public bidirectional_iterator_tag {}; 335 336template <class _Tp> 337struct __has_iterator_category 338{ 339private: 340 struct __two {char _; char __;}; 341 template <class _Up> static __two __test(...); 342 template <class _Up> static char __test(typename _Up::iterator_category* = 0); 343public: 344 static const bool value = sizeof(__test<_Tp>(0)) == 1; 345}; 346 347template <class _Iter, bool> struct ____iterator_traits {}; 348 349template <class _Iter> 350struct ____iterator_traits<_Iter, true> 351{ 352 typedef typename _Iter::difference_type difference_type; 353 typedef typename _Iter::value_type value_type; 354 typedef typename _Iter::pointer pointer; 355 typedef typename _Iter::reference reference; 356 typedef typename _Iter::iterator_category iterator_category; 357}; 358 359template <class _Iter, bool> struct __iterator_traits {}; 360 361template <class _Iter> 362struct __iterator_traits<_Iter, true> 363 : ____iterator_traits 364 < 365 _Iter, 366 is_convertible<typename _Iter::iterator_category, input_iterator_tag>::value || 367 is_convertible<typename _Iter::iterator_category, output_iterator_tag>::value 368 > 369{}; 370 371// iterator_traits<Iterator> will only have the nested types if Iterator::iterator_category 372// exists. Else iterator_traits<Iterator> will be an empty class. This is a 373// conforming extension which allows some programs to compile and behave as 374// the client expects instead of failing at compile time. 375 376template <class _Iter> 377struct _LIBCPP_VISIBLE iterator_traits 378 : __iterator_traits<_Iter, __has_iterator_category<_Iter>::value> {}; 379 380template<class _Tp> 381struct _LIBCPP_VISIBLE iterator_traits<_Tp*> 382{ 383 typedef ptrdiff_t difference_type; 384 typedef typename remove_const<_Tp>::type value_type; 385 typedef _Tp* pointer; 386 typedef _Tp& reference; 387 typedef random_access_iterator_tag iterator_category; 388}; 389 390template <class _Tp, class _Up, bool = __has_iterator_category<iterator_traits<_Tp> >::value> 391struct __has_iterator_category_convertible_to 392 : public integral_constant<bool, is_convertible<typename iterator_traits<_Tp>::iterator_category, _Up>::value> 393{}; 394 395template <class _Tp, class _Up> 396struct __has_iterator_category_convertible_to<_Tp, _Up, false> : public false_type {}; 397 398template <class _Tp> 399struct __is_input_iterator : public __has_iterator_category_convertible_to<_Tp, input_iterator_tag> {}; 400 401template <class _Tp> 402struct __is_forward_iterator : public __has_iterator_category_convertible_to<_Tp, forward_iterator_tag> {}; 403 404template <class _Tp> 405struct __is_bidirectional_iterator : public __has_iterator_category_convertible_to<_Tp, bidirectional_iterator_tag> {}; 406 407template <class _Tp> 408struct __is_random_access_iterator : public __has_iterator_category_convertible_to<_Tp, random_access_iterator_tag> {}; 409 410template<class _Category, class _Tp, class _Distance = ptrdiff_t, 411 class _Pointer = _Tp*, class _Reference = _Tp&> 412struct _LIBCPP_VISIBLE iterator 413{ 414 typedef _Tp value_type; 415 typedef _Distance difference_type; 416 typedef _Pointer pointer; 417 typedef _Reference reference; 418 typedef _Category iterator_category; 419}; 420 421template <class _InputIter> 422inline _LIBCPP_INLINE_VISIBILITY 423void __advance(_InputIter& __i, 424 typename iterator_traits<_InputIter>::difference_type __n, input_iterator_tag) 425{ 426 for (; __n > 0; --__n) 427 ++__i; 428} 429 430template <class _BiDirIter> 431inline _LIBCPP_INLINE_VISIBILITY 432void __advance(_BiDirIter& __i, 433 typename iterator_traits<_BiDirIter>::difference_type __n, bidirectional_iterator_tag) 434{ 435 if (__n >= 0) 436 for (; __n > 0; --__n) 437 ++__i; 438 else 439 for (; __n < 0; ++__n) 440 --__i; 441} 442 443template <class _RandIter> 444inline _LIBCPP_INLINE_VISIBILITY 445void __advance(_RandIter& __i, 446 typename iterator_traits<_RandIter>::difference_type __n, random_access_iterator_tag) 447{ 448 __i += __n; 449} 450 451template <class _InputIter> 452inline _LIBCPP_INLINE_VISIBILITY 453void advance(_InputIter& __i, 454 typename iterator_traits<_InputIter>::difference_type __n) 455{ 456 __advance(__i, __n, typename iterator_traits<_InputIter>::iterator_category()); 457} 458 459template <class _InputIter> 460inline _LIBCPP_INLINE_VISIBILITY 461typename iterator_traits<_InputIter>::difference_type 462__distance(_InputIter __first, _InputIter __last, input_iterator_tag) 463{ 464 typename iterator_traits<_InputIter>::difference_type __r(0); 465 for (; __first != __last; ++__first) 466 ++__r; 467 return __r; 468} 469 470template <class _RandIter> 471inline _LIBCPP_INLINE_VISIBILITY 472typename iterator_traits<_RandIter>::difference_type 473__distance(_RandIter __first, _RandIter __last, random_access_iterator_tag) 474{ 475 return __last - __first; 476} 477 478template <class _InputIter> 479inline _LIBCPP_INLINE_VISIBILITY 480typename iterator_traits<_InputIter>::difference_type 481distance(_InputIter __first, _InputIter __last) 482{ 483 return __distance(__first, __last, typename iterator_traits<_InputIter>::iterator_category()); 484} 485 486template <class _ForwardIter> 487inline _LIBCPP_INLINE_VISIBILITY 488_ForwardIter 489next(_ForwardIter __x, 490 typename iterator_traits<_ForwardIter>::difference_type __n = 1, 491 typename enable_if<__is_forward_iterator<_ForwardIter>::value>::type* = 0) 492{ 493 _VSTD::advance(__x, __n); 494 return __x; 495} 496 497template <class _BidiretionalIter> 498inline _LIBCPP_INLINE_VISIBILITY 499_BidiretionalIter 500prev(_BidiretionalIter __x, 501 typename iterator_traits<_BidiretionalIter>::difference_type __n = 1, 502 typename enable_if<__is_bidirectional_iterator<_BidiretionalIter>::value>::type* = 0) 503{ 504 _VSTD::advance(__x, -__n); 505 return __x; 506} 507 508template <class _Iter> 509class _LIBCPP_VISIBLE reverse_iterator 510 : public iterator<typename iterator_traits<_Iter>::iterator_category, 511 typename iterator_traits<_Iter>::value_type, 512 typename iterator_traits<_Iter>::difference_type, 513 typename iterator_traits<_Iter>::pointer, 514 typename iterator_traits<_Iter>::reference> 515{ 516private: 517 mutable _Iter __t; 518protected: 519 _Iter current; 520public: 521 typedef _Iter iterator_type; 522 typedef typename iterator_traits<_Iter>::difference_type difference_type; 523 typedef typename iterator_traits<_Iter>::reference reference; 524 typedef typename iterator_traits<_Iter>::pointer pointer; 525 526 _LIBCPP_INLINE_VISIBILITY reverse_iterator() : current() {} 527 _LIBCPP_INLINE_VISIBILITY explicit reverse_iterator(_Iter __x) : __t(__x), current(__x) {} 528 template <class _Up> _LIBCPP_INLINE_VISIBILITY reverse_iterator(const reverse_iterator<_Up>& __u) 529 : __t(__u.base()), current(__u.base()) {} 530 _LIBCPP_INLINE_VISIBILITY _Iter base() const {return current;} 531 _LIBCPP_INLINE_VISIBILITY reference operator*() const {__t = current; return *--__t;} 532 _LIBCPP_INLINE_VISIBILITY pointer operator->() const {return &(operator*());} 533 _LIBCPP_INLINE_VISIBILITY reverse_iterator& operator++() {--current; return *this;} 534 _LIBCPP_INLINE_VISIBILITY reverse_iterator operator++(int) 535 {reverse_iterator __tmp(*this); --current; return __tmp;} 536 _LIBCPP_INLINE_VISIBILITY reverse_iterator& operator--() {++current; return *this;} 537 _LIBCPP_INLINE_VISIBILITY reverse_iterator operator--(int) 538 {reverse_iterator __tmp(*this); ++current; return __tmp;} 539 _LIBCPP_INLINE_VISIBILITY reverse_iterator operator+ (difference_type __n) const 540 {return reverse_iterator(current - __n);} 541 _LIBCPP_INLINE_VISIBILITY reverse_iterator& operator+=(difference_type __n) 542 {current -= __n; return *this;} 543 _LIBCPP_INLINE_VISIBILITY reverse_iterator operator- (difference_type __n) const 544 {return reverse_iterator(current + __n);} 545 _LIBCPP_INLINE_VISIBILITY reverse_iterator& operator-=(difference_type __n) 546 {current += __n; return *this;} 547 _LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const 548 {return current[-__n-1];} 549}; 550 551template <class _Iter1, class _Iter2> 552inline _LIBCPP_INLINE_VISIBILITY 553bool 554operator==(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 555{ 556 return __x.base() == __y.base(); 557} 558 559template <class _Iter1, class _Iter2> 560inline _LIBCPP_INLINE_VISIBILITY 561bool 562operator<(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 563{ 564 return __x.base() > __y.base(); 565} 566 567template <class _Iter1, class _Iter2> 568inline _LIBCPP_INLINE_VISIBILITY 569bool 570operator!=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 571{ 572 return __x.base() != __y.base(); 573} 574 575template <class _Iter1, class _Iter2> 576inline _LIBCPP_INLINE_VISIBILITY 577bool 578operator>(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 579{ 580 return __x.base() < __y.base(); 581} 582 583template <class _Iter1, class _Iter2> 584inline _LIBCPP_INLINE_VISIBILITY 585bool 586operator>=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 587{ 588 return __x.base() <= __y.base(); 589} 590 591template <class _Iter1, class _Iter2> 592inline _LIBCPP_INLINE_VISIBILITY 593bool 594operator<=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 595{ 596 return __x.base() >= __y.base(); 597} 598 599template <class _Iter1, class _Iter2> 600inline _LIBCPP_INLINE_VISIBILITY 601typename reverse_iterator<_Iter1>::difference_type 602operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 603{ 604 return __y.base() - __x.base(); 605} 606 607template <class _Iter> 608inline _LIBCPP_INLINE_VISIBILITY 609reverse_iterator<_Iter> 610operator+(typename reverse_iterator<_Iter>::difference_type __n, const reverse_iterator<_Iter>& __x) 611{ 612 return reverse_iterator<_Iter>(__x.base() - __n); 613} 614 615template <class _Container> 616class _LIBCPP_VISIBLE back_insert_iterator 617 : public iterator<output_iterator_tag, 618 void, 619 void, 620 void, 621 back_insert_iterator<_Container>&> 622{ 623protected: 624 _Container* container; 625public: 626 typedef _Container container_type; 627 628 _LIBCPP_INLINE_VISIBILITY explicit back_insert_iterator(_Container& __x) : container(&__x) {} 629 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(const typename _Container::value_type& __value_) 630 {container->push_back(__value_); return *this;} 631#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 632 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(typename _Container::value_type&& __value_) 633 {container->push_back(_VSTD::move(__value_)); return *this;} 634#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 635 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator*() {return *this;} 636 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator++() {return *this;} 637 _LIBCPP_INLINE_VISIBILITY back_insert_iterator operator++(int) {return *this;} 638}; 639 640template <class _Container> 641inline _LIBCPP_INLINE_VISIBILITY 642back_insert_iterator<_Container> 643back_inserter(_Container& __x) 644{ 645 return back_insert_iterator<_Container>(__x); 646} 647 648template <class _Container> 649class _LIBCPP_VISIBLE front_insert_iterator 650 : public iterator<output_iterator_tag, 651 void, 652 void, 653 void, 654 front_insert_iterator<_Container>&> 655{ 656protected: 657 _Container* container; 658public: 659 typedef _Container container_type; 660 661 _LIBCPP_INLINE_VISIBILITY explicit front_insert_iterator(_Container& __x) : container(&__x) {} 662 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(const typename _Container::value_type& __value_) 663 {container->push_front(__value_); return *this;} 664#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 665 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(typename _Container::value_type&& __value_) 666 {container->push_front(_VSTD::move(__value_)); return *this;} 667#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 668 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator*() {return *this;} 669 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator++() {return *this;} 670 _LIBCPP_INLINE_VISIBILITY front_insert_iterator operator++(int) {return *this;} 671}; 672 673template <class _Container> 674inline _LIBCPP_INLINE_VISIBILITY 675front_insert_iterator<_Container> 676front_inserter(_Container& __x) 677{ 678 return front_insert_iterator<_Container>(__x); 679} 680 681template <class _Container> 682class _LIBCPP_VISIBLE insert_iterator 683 : public iterator<output_iterator_tag, 684 void, 685 void, 686 void, 687 insert_iterator<_Container>&> 688{ 689protected: 690 _Container* container; 691 typename _Container::iterator iter; 692public: 693 typedef _Container container_type; 694 695 _LIBCPP_INLINE_VISIBILITY insert_iterator(_Container& __x, typename _Container::iterator __i) 696 : container(&__x), iter(__i) {} 697 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(const typename _Container::value_type& __value_) 698 {iter = container->insert(iter, __value_); ++iter; return *this;} 699#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 700 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(typename _Container::value_type&& __value_) 701 {iter = container->insert(iter, _VSTD::move(__value_)); ++iter; return *this;} 702#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 703 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator*() {return *this;} 704 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator++() {return *this;} 705 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator++(int) {return *this;} 706}; 707 708template <class _Container> 709inline _LIBCPP_INLINE_VISIBILITY 710insert_iterator<_Container> 711inserter(_Container& __x, typename _Container::iterator __i) 712{ 713 return insert_iterator<_Container>(__x, __i); 714} 715 716template <class _Tp, class _CharT = char, 717 class _Traits = char_traits<_CharT>, class _Distance = ptrdiff_t> 718class _LIBCPP_VISIBLE istream_iterator 719 : public iterator<input_iterator_tag, _Tp, _Distance, const _Tp*, const _Tp&> 720{ 721public: 722 typedef _CharT char_type; 723 typedef _Traits traits_type; 724 typedef basic_istream<_CharT,_Traits> istream_type; 725private: 726 istream_type* __in_stream_; 727 _Tp __value_; 728public: 729 _LIBCPP_INLINE_VISIBILITY istream_iterator() : __in_stream_(0) {} 730 _LIBCPP_INLINE_VISIBILITY istream_iterator(istream_type& __s) : __in_stream_(&__s) 731 { 732 if (!(*__in_stream_ >> __value_)) 733 __in_stream_ = 0; 734 } 735 736 _LIBCPP_INLINE_VISIBILITY const _Tp& operator*() const {return __value_;} 737 _LIBCPP_INLINE_VISIBILITY const _Tp* operator->() const {return &(operator*());} 738 _LIBCPP_INLINE_VISIBILITY istream_iterator& operator++() 739 { 740 if (!(*__in_stream_ >> __value_)) 741 __in_stream_ = 0; 742 return *this; 743 } 744 _LIBCPP_INLINE_VISIBILITY istream_iterator operator++(int) 745 {istream_iterator __t(*this); ++(*this); return __t;} 746 747 friend _LIBCPP_INLINE_VISIBILITY 748 bool operator==(const istream_iterator& __x, const istream_iterator& __y) 749 {return __x.__in_stream_ == __y.__in_stream_;} 750 751 friend _LIBCPP_INLINE_VISIBILITY 752 bool operator!=(const istream_iterator& __x, const istream_iterator& __y) 753 {return !(__x == __y);} 754}; 755 756template <class _Tp, class _CharT = char, class _Traits = char_traits<_CharT> > 757class _LIBCPP_VISIBLE ostream_iterator 758 : public iterator<output_iterator_tag, void, void, void, void> 759{ 760public: 761 typedef _CharT char_type; 762 typedef _Traits traits_type; 763 typedef basic_ostream<_CharT,_Traits> ostream_type; 764private: 765 ostream_type* __out_stream_; 766 const char_type* __delim_; 767public: 768 _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s) 769 : __out_stream_(&__s), __delim_(0) {} 770 _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s, const _CharT* __delimiter) 771 : __out_stream_(&__s), __delim_(__delimiter) {} 772 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator=(const _Tp& __value_) 773 { 774 *__out_stream_ << __value_; 775 if (__delim_) 776 *__out_stream_ << __delim_; 777 return *this; 778 } 779 780 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator*() {return *this;} 781 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++() {return *this;} 782 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++(int) {return *this;} 783}; 784 785template<class _CharT, class _Traits> 786class _LIBCPP_VISIBLE istreambuf_iterator 787 : public iterator<input_iterator_tag, _CharT, 788 typename _Traits::off_type, _CharT*, 789 _CharT> 790{ 791public: 792 typedef _CharT char_type; 793 typedef _Traits traits_type; 794 typedef typename _Traits::int_type int_type; 795 typedef basic_streambuf<_CharT,_Traits> streambuf_type; 796 typedef basic_istream<_CharT,_Traits> istream_type; 797private: 798 streambuf_type* __sbuf_; 799 800 class __proxy 801 { 802 char_type __keep_; 803 streambuf_type* __sbuf_; 804 _LIBCPP_INLINE_VISIBILITY __proxy(char_type __c, streambuf_type* __s) 805 : __keep_(__c), __sbuf_(__s) {} 806 friend class istreambuf_iterator; 807 public: 808 _LIBCPP_INLINE_VISIBILITY char_type operator*() const {return __keep_;} 809 }; 810 811 _LIBCPP_INLINE_VISIBILITY 812 void __test_for_eof() 813 { 814 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sgetc(), traits_type::eof())) 815 __sbuf_ = 0; 816 } 817public: 818 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator() throw() : __sbuf_(0) {} 819 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(istream_type& __s) throw() 820 : __sbuf_(__s.rdbuf()) {__test_for_eof();} 821 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(streambuf_type* __s) throw() 822 : __sbuf_(__s) {__test_for_eof();} 823 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(const __proxy& __p) throw() 824 : __sbuf_(__p.__sbuf_) {} 825 826 _LIBCPP_INLINE_VISIBILITY _CharT operator*() const {return __sbuf_->sgetc();} 827 _LIBCPP_INLINE_VISIBILITY char_type* operator->() const {return nullptr;} 828 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator& operator++() 829 { 830 if (traits_type::eq_int_type(__sbuf_->snextc(), traits_type::eof())) 831 __sbuf_ = 0; 832 return *this; 833 } 834 _LIBCPP_INLINE_VISIBILITY __proxy operator++(int) 835 { 836 char_type __c = __sbuf_->sgetc(); 837 ++(*this); 838 return __proxy(__c, __sbuf_); 839 } 840 841 _LIBCPP_INLINE_VISIBILITY bool equal(const istreambuf_iterator& __b) const 842 {return (__sbuf_ == 0) == (__b.__sbuf_ == 0);} 843}; 844 845template <class _CharT, class _Traits> 846inline _LIBCPP_INLINE_VISIBILITY 847bool operator==(const istreambuf_iterator<_CharT,_Traits>& __a, 848 const istreambuf_iterator<_CharT,_Traits>& __b) 849 {return __a.equal(__b);} 850 851template <class _CharT, class _Traits> 852inline _LIBCPP_INLINE_VISIBILITY 853bool operator!=(const istreambuf_iterator<_CharT,_Traits>& __a, 854 const istreambuf_iterator<_CharT,_Traits>& __b) 855 {return !__a.equal(__b);} 856 857template <class _CharT, class _Traits> 858class _LIBCPP_VISIBLE ostreambuf_iterator 859 : public iterator<output_iterator_tag, void, void, void, void> 860{ 861public: 862 typedef _CharT char_type; 863 typedef _Traits traits_type; 864 typedef basic_streambuf<_CharT,_Traits> streambuf_type; 865 typedef basic_ostream<_CharT,_Traits> ostream_type; 866private: 867 streambuf_type* __sbuf_; 868public: 869 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(ostream_type& __s) throw() 870 : __sbuf_(__s.rdbuf()) {} 871 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(streambuf_type* __s) throw() 872 : __sbuf_(__s) {} 873 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator=(_CharT __c) 874 { 875 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sputc(__c), traits_type::eof())) 876 __sbuf_ = 0; 877 return *this; 878 } 879 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator*() {return *this;} 880 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++() {return *this;} 881 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++(int) {return *this;} 882 _LIBCPP_INLINE_VISIBILITY bool failed() const throw() {return __sbuf_ == 0;} 883}; 884 885template <class _Iter> 886class _LIBCPP_VISIBLE move_iterator 887{ 888private: 889 _Iter __i; 890public: 891 typedef _Iter iterator_type; 892 typedef typename iterator_traits<iterator_type>::iterator_category iterator_category; 893 typedef typename iterator_traits<iterator_type>::value_type value_type; 894 typedef typename iterator_traits<iterator_type>::difference_type difference_type; 895 typedef typename iterator_traits<iterator_type>::pointer pointer; 896#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 897 typedef value_type&& reference; 898#else 899 typedef typename iterator_traits<iterator_type>::reference reference; 900#endif 901 902 _LIBCPP_INLINE_VISIBILITY move_iterator() : __i() {} 903 _LIBCPP_INLINE_VISIBILITY explicit move_iterator(_Iter __x) : __i(__x) {} 904 template <class _Up> _LIBCPP_INLINE_VISIBILITY move_iterator(const move_iterator<_Up>& __u) 905 : __i(__u.base()) {} 906 _LIBCPP_INLINE_VISIBILITY _Iter base() const {return __i;} 907 _LIBCPP_INLINE_VISIBILITY reference operator*() const { 908 return static_cast<reference>(*__i); 909 } 910 _LIBCPP_INLINE_VISIBILITY pointer operator->() const { 911 typename iterator_traits<iterator_type>::reference __ref = *__i; 912 return &__ref; 913 } 914 _LIBCPP_INLINE_VISIBILITY move_iterator& operator++() {++__i; return *this;} 915 _LIBCPP_INLINE_VISIBILITY move_iterator operator++(int) 916 {move_iterator __tmp(*this); ++__i; return __tmp;} 917 _LIBCPP_INLINE_VISIBILITY move_iterator& operator--() {--__i; return *this;} 918 _LIBCPP_INLINE_VISIBILITY move_iterator operator--(int) 919 {move_iterator __tmp(*this); --__i; return __tmp;} 920 _LIBCPP_INLINE_VISIBILITY move_iterator operator+ (difference_type __n) const 921 {return move_iterator(__i + __n);} 922 _LIBCPP_INLINE_VISIBILITY move_iterator& operator+=(difference_type __n) 923 {__i += __n; return *this;} 924 _LIBCPP_INLINE_VISIBILITY move_iterator operator- (difference_type __n) const 925 {return move_iterator(__i - __n);} 926 _LIBCPP_INLINE_VISIBILITY move_iterator& operator-=(difference_type __n) 927 {__i -= __n; return *this;} 928 _LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const 929 { 930 return static_cast<reference>(__i[__n]); 931 } 932}; 933 934template <class _Iter1, class _Iter2> 935inline _LIBCPP_INLINE_VISIBILITY 936bool 937operator==(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 938{ 939 return __x.base() == __y.base(); 940} 941 942template <class _Iter1, class _Iter2> 943inline _LIBCPP_INLINE_VISIBILITY 944bool 945operator<(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 946{ 947 return __x.base() < __y.base(); 948} 949 950template <class _Iter1, class _Iter2> 951inline _LIBCPP_INLINE_VISIBILITY 952bool 953operator!=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 954{ 955 return __x.base() != __y.base(); 956} 957 958template <class _Iter1, class _Iter2> 959inline _LIBCPP_INLINE_VISIBILITY 960bool 961operator>(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 962{ 963 return __x.base() > __y.base(); 964} 965 966template <class _Iter1, class _Iter2> 967inline _LIBCPP_INLINE_VISIBILITY 968bool 969operator>=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 970{ 971 return __x.base() >= __y.base(); 972} 973 974template <class _Iter1, class _Iter2> 975inline _LIBCPP_INLINE_VISIBILITY 976bool 977operator<=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 978{ 979 return __x.base() <= __y.base(); 980} 981 982template <class _Iter1, class _Iter2> 983inline _LIBCPP_INLINE_VISIBILITY 984typename move_iterator<_Iter1>::difference_type 985operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 986{ 987 return __x.base() - __y.base(); 988} 989 990template <class _Iter> 991inline _LIBCPP_INLINE_VISIBILITY 992move_iterator<_Iter> 993operator+(typename move_iterator<_Iter>::difference_type __n, const move_iterator<_Iter>& __x) 994{ 995 return move_iterator<_Iter>(__x.base() + __n); 996} 997 998template <class _Iter> 999inline _LIBCPP_INLINE_VISIBILITY 1000move_iterator<_Iter> 1001make_move_iterator(const _Iter& __i) 1002{ 1003 return move_iterator<_Iter>(__i); 1004} 1005 1006// __wrap_iter 1007 1008template <class _Iter> class __wrap_iter; 1009 1010template <class _Iter1, class _Iter2> 1011bool 1012operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT; 1013 1014template <class _Iter1, class _Iter2> 1015bool 1016operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT; 1017 1018template <class _Iter1, class _Iter2> 1019bool 1020operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT; 1021 1022template <class _Iter1, class _Iter2> 1023bool 1024operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT; 1025 1026template <class _Iter1, class _Iter2> 1027bool 1028operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT; 1029 1030template <class _Iter1, class _Iter2> 1031bool 1032operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT; 1033 1034template <class _Iter1, class _Iter2> 1035typename __wrap_iter<_Iter1>::difference_type 1036operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT; 1037 1038template <class _Iter> 1039__wrap_iter<_Iter> 1040operator+(typename __wrap_iter<_Iter>::difference_type, __wrap_iter<_Iter>) _NOEXCEPT; 1041 1042template <class _I, class _O> _O copy(_I, _I, _O); 1043template <class _B1, class _B2> _B2 copy_backward(_B1, _B1, _B2); 1044template <class _I, class _O> _O move(_I, _I, _O); 1045template <class _B1, class _B2> _B2 move_backward(_B1, _B1, _B2); 1046 1047template <class _Tp> 1048typename enable_if 1049< 1050 is_trivially_copy_assignable<_Tp>::value, 1051 _Tp* 1052>::type 1053__unwrap_iter(__wrap_iter<_Tp*>); 1054 1055template <class _Iter> 1056class __wrap_iter 1057{ 1058public: 1059 typedef _Iter iterator_type; 1060 typedef typename iterator_traits<iterator_type>::iterator_category iterator_category; 1061 typedef typename iterator_traits<iterator_type>::value_type value_type; 1062 typedef typename iterator_traits<iterator_type>::difference_type difference_type; 1063 typedef typename iterator_traits<iterator_type>::pointer pointer; 1064 typedef typename iterator_traits<iterator_type>::reference reference; 1065private: 1066 iterator_type __i; 1067public: 1068 _LIBCPP_INLINE_VISIBILITY __wrap_iter() _NOEXCEPT 1069 { 1070#if _LIBCPP_DEBUG_LEVEL >= 2 1071 __get_db()->__insert_i(this); 1072#endif 1073 } 1074 template <class _Up> _LIBCPP_INLINE_VISIBILITY __wrap_iter(const __wrap_iter<_Up>& __u, 1075 typename enable_if<is_convertible<_Up, iterator_type>::value>::type* = 0) _NOEXCEPT 1076 : __i(__u.base()) 1077 { 1078#if _LIBCPP_DEBUG_LEVEL >= 2 1079 __get_db()->__iterator_copy(this, &__u); 1080#endif 1081 } 1082#if _LIBCPP_DEBUG_LEVEL >= 2 1083 _LIBCPP_INLINE_VISIBILITY 1084 __wrap_iter(const __wrap_iter& __x) 1085 : __i(__x.base()) 1086 { 1087 __get_db()->__iterator_copy(this, &__x); 1088 } 1089 _LIBCPP_INLINE_VISIBILITY 1090 __wrap_iter& operator=(const __wrap_iter& __x) 1091 { 1092 if (this != &__x) 1093 { 1094 __get_db()->__iterator_copy(this, &__x); 1095 __i = __x.__i; 1096 } 1097 return *this; 1098 } 1099 _LIBCPP_INLINE_VISIBILITY 1100 ~__wrap_iter() 1101 { 1102 __get_db()->__erase_i(this); 1103 } 1104#endif 1105 _LIBCPP_INLINE_VISIBILITY reference operator*() const _NOEXCEPT 1106 { 1107#if _LIBCPP_DEBUG_LEVEL >= 2 1108 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this), 1109 "Attempted to dereference a non-dereferenceable iterator"); 1110#endif 1111 return *__i; 1112 } 1113 _LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT {return &(operator*());} 1114 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator++() _NOEXCEPT 1115 { 1116#if _LIBCPP_DEBUG_LEVEL >= 2 1117 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this), 1118 "Attempted to increment non-incrementable iterator"); 1119#endif 1120 ++__i; 1121 return *this; 1122 } 1123 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator++(int) _NOEXCEPT 1124 {__wrap_iter __tmp(*this); ++(*this); return __tmp;} 1125 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator--() _NOEXCEPT 1126 { 1127#if _LIBCPP_DEBUG_LEVEL >= 2 1128 _LIBCPP_ASSERT(__get_const_db()->__decrementable(this), 1129 "Attempted to decrement non-decrementable iterator"); 1130#endif 1131 --__i; 1132 return *this; 1133 } 1134 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator--(int) _NOEXCEPT 1135 {__wrap_iter __tmp(*this); --(*this); return __tmp;} 1136 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator+ (difference_type __n) const _NOEXCEPT 1137 {__wrap_iter __w(*this); __w += __n; return __w;} 1138 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator+=(difference_type __n) _NOEXCEPT 1139 { 1140#if _LIBCPP_DEBUG_LEVEL >= 2 1141 _LIBCPP_ASSERT(__get_const_db()->__addable(this, __n), 1142 "Attempted to add/subtract iterator outside of valid range"); 1143#endif 1144 __i += __n; 1145 return *this; 1146 } 1147 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator- (difference_type __n) const _NOEXCEPT 1148 {return *this + (-__n);} 1149 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator-=(difference_type __n) _NOEXCEPT 1150 {*this += -__n; return *this;} 1151 _LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const _NOEXCEPT 1152 { 1153#if _LIBCPP_DEBUG_LEVEL >= 2 1154 _LIBCPP_ASSERT(__get_const_db()->__subscriptable(this, __n), 1155 "Attempted to subscript iterator outside of valid range"); 1156#endif 1157 return __i[__n]; 1158 } 1159 1160 _LIBCPP_INLINE_VISIBILITY iterator_type base() const _NOEXCEPT {return __i;} 1161 1162private: 1163 _LIBCPP_INLINE_VISIBILITY __wrap_iter(iterator_type __x) _NOEXCEPT : __i(__x) {} 1164#if _LIBCPP_DEBUG_LEVEL >= 2 1165 _LIBCPP_INLINE_VISIBILITY __wrap_iter(const void* __p, iterator_type __x) : __i(__x) 1166 { 1167 __get_db()->__insert_ic(this, __p); 1168 } 1169#endif 1170 1171 template <class _Up> friend class __wrap_iter; 1172 template <class _CharT, class _Traits, class _Alloc> friend class basic_string; 1173 template <class _Tp, class _Alloc> friend class vector; 1174 1175 template <class _Iter1, class _Iter2> 1176 friend 1177 bool 1178 operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT; 1179 1180 template <class _Iter1, class _Iter2> 1181 friend 1182 bool 1183 operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT; 1184 1185 template <class _Iter1, class _Iter2> 1186 friend 1187 bool 1188 operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT; 1189 1190 template <class _Iter1, class _Iter2> 1191 friend 1192 bool 1193 operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT; 1194 1195 template <class _Iter1, class _Iter2> 1196 friend 1197 bool 1198 operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT; 1199 1200 template <class _Iter1, class _Iter2> 1201 friend 1202 bool 1203 operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT; 1204 1205 template <class _Iter1, class _Iter2> 1206 friend 1207 typename __wrap_iter<_Iter1>::difference_type 1208 operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT; 1209 1210 template <class _Iter1> 1211 friend 1212 __wrap_iter<_Iter1> 1213 operator+(typename __wrap_iter<_Iter1>::difference_type, __wrap_iter<_Iter1>) _NOEXCEPT; 1214 1215 template <class _I, class _O> friend _O copy(_I, _I, _O); 1216 template <class _B1, class _B2> friend _B2 copy_backward(_B1, _B1, _B2); 1217 template <class _I, class _O> friend _O move(_I, _I, _O); 1218 template <class _B1, class _B2> friend _B2 move_backward(_B1, _B1, _B2); 1219 1220 template <class _Tp> 1221 friend 1222 typename enable_if 1223 < 1224 is_trivially_copy_assignable<_Tp>::value, 1225 _Tp* 1226 >::type 1227 __unwrap_iter(__wrap_iter<_Tp*>); 1228}; 1229 1230template <class _Iter1, class _Iter2> 1231inline _LIBCPP_INLINE_VISIBILITY 1232bool 1233operator==(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT 1234{ 1235#if _LIBCPP_DEBUG_LEVEL >= 2 1236 _LIBCPP_ASSERT(__get_const_db()->__comparable(&__x, &__y), 1237 "Attempted to compare incomparable iterators"); 1238#endif 1239 return __x.base() == __y.base(); 1240} 1241 1242template <class _Iter1, class _Iter2> 1243inline _LIBCPP_INLINE_VISIBILITY 1244bool 1245operator<(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT 1246{ 1247#if _LIBCPP_DEBUG_LEVEL >= 2 1248 _LIBCPP_ASSERT(__get_const_db()->__comparable(&__x, &__y), 1249 "Attempted to compare incomparable iterators"); 1250#endif 1251 return __x.base() < __y.base(); 1252} 1253 1254template <class _Iter1, class _Iter2> 1255inline _LIBCPP_INLINE_VISIBILITY 1256bool 1257operator!=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT 1258{ 1259 return !(__x == __y); 1260} 1261 1262template <class _Iter1, class _Iter2> 1263inline _LIBCPP_INLINE_VISIBILITY 1264bool 1265operator>(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT 1266{ 1267 return __y < __x; 1268} 1269 1270template <class _Iter1, class _Iter2> 1271inline _LIBCPP_INLINE_VISIBILITY 1272bool 1273operator>=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT 1274{ 1275 return !(__x < __y); 1276} 1277 1278template <class _Iter1, class _Iter2> 1279inline _LIBCPP_INLINE_VISIBILITY 1280bool 1281operator<=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT 1282{ 1283 return !(__y < __x); 1284} 1285 1286template <class _Iter1, class _Iter2> 1287inline _LIBCPP_INLINE_VISIBILITY 1288typename __wrap_iter<_Iter1>::difference_type 1289operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT 1290{ 1291#if _LIBCPP_DEBUG_LEVEL >= 2 1292 _LIBCPP_ASSERT(__get_const_db()->__comparable(&__x, &__y), 1293 "Attempted to subtract incompatible iterators"); 1294#endif 1295 return __x.base() - __y.base(); 1296} 1297 1298template <class _Iter> 1299inline _LIBCPP_INLINE_VISIBILITY 1300__wrap_iter<_Iter> 1301operator+(typename __wrap_iter<_Iter>::difference_type __n, 1302 __wrap_iter<_Iter> __x) _NOEXCEPT 1303{ 1304 __x += __n; 1305 return __x; 1306} 1307 1308#ifdef _LIBCPP_DEBUG 1309 1310// __debug_iter 1311 1312template <class _Container, class _Iter> class __debug_iter; 1313 1314template <class _Container, class _Iter1, class _Iter2> 1315bool 1316operator==(const __debug_iter<_Container, _Iter1>&, const __debug_iter<_Container, _Iter2>&); 1317 1318template <class _Container, class _Iter1, class _Iter2> 1319bool 1320operator<(const __debug_iter<_Container, _Iter1>&, const __debug_iter<_Container, _Iter2>&); 1321 1322template <class _Container, class _Iter1, class _Iter2> 1323bool 1324operator!=(const __debug_iter<_Container, _Iter1>&, const __debug_iter<_Container, _Iter2>&); 1325 1326template <class _Container, class _Iter1, class _Iter2> 1327bool 1328operator>(const __debug_iter<_Container, _Iter1>&, const __debug_iter<_Container, _Iter2>&); 1329 1330template <class _Container, class _Iter1, class _Iter2> 1331bool 1332operator>=(const __debug_iter<_Container, _Iter1>&, const __debug_iter<_Container, _Iter2>&); 1333 1334template <class _Container, class _Iter1, class _Iter2> 1335bool 1336operator<=(const __debug_iter<_Container, _Iter1>&, const __debug_iter<_Container, _Iter2>&); 1337 1338template <class _Container, class _Iter1, class _Iter2> 1339typename __debug_iter<_Container, _Iter1>::difference_type 1340operator-(const __debug_iter<_Container, _Iter1>&, const __debug_iter<_Container, _Iter2>&); 1341 1342template <class _Container, class _Iter> 1343__debug_iter<_Container, _Iter> 1344operator+(typename __debug_iter<_Container, _Iter>::difference_type, const __debug_iter<_Container, _Iter>&); 1345 1346template <class _Container, class _Iter> 1347class __debug_iter 1348{ 1349public: 1350 typedef _Iter iterator_type; 1351 typedef _Container __container_type; 1352 typedef typename iterator_traits<iterator_type>::iterator_category iterator_category; 1353 typedef typename iterator_traits<iterator_type>::value_type value_type; 1354 typedef typename iterator_traits<iterator_type>::difference_type difference_type; 1355 typedef typename iterator_traits<iterator_type>::pointer pointer; 1356 typedef typename iterator_traits<iterator_type>::reference reference; 1357private: 1358 iterator_type __i; 1359 __debug_iter* __next; 1360 __container_type* __cont; 1361 1362public: 1363 _LIBCPP_INLINE_VISIBILITY __debug_iter() : __next(0), __cont(0) {} 1364 _LIBCPP_INLINE_VISIBILITY __debug_iter(const __debug_iter& __x) 1365 : __i(__x.base()), __next(0), __cont(0) {__set_owner(__x.__cont);} 1366 __debug_iter& operator=(const __debug_iter& __x); 1367 template <class _Up> _LIBCPP_INLINE_VISIBILITY __debug_iter(const __debug_iter<_Container, _Up>& __u, 1368 typename enable_if<is_convertible<_Up, iterator_type>::value>::type* = 0) 1369 : __i(__u.base()), __next(0), __cont(0) {__set_owner(__u.__cont);} 1370 _LIBCPP_INLINE_VISIBILITY ~__debug_iter() {__remove_owner();} 1371 _LIBCPP_INLINE_VISIBILITY reference operator*() const {assert(__is_deref()); return *__i;} 1372 _LIBCPP_INLINE_VISIBILITY pointer operator->() const {return &(operator*());} 1373 _LIBCPP_INLINE_VISIBILITY __debug_iter& operator++() {assert(__can_increment()); ++__i; return *this;} 1374 _LIBCPP_INLINE_VISIBILITY __debug_iter operator++(int) 1375 {__debug_iter __tmp(*this); operator++(); return __tmp;} 1376 _LIBCPP_INLINE_VISIBILITY __debug_iter& operator--() {assert(__can_decrement()); --__i; return *this;} 1377 _LIBCPP_INLINE_VISIBILITY __debug_iter operator--(int) 1378 {__debug_iter __tmp(*this); operator--(); return __tmp;} 1379 _LIBCPP_INLINE_VISIBILITY __debug_iter operator+ (difference_type __n) const 1380 {__debug_iter __t(*this); __t += __n; return __t;} 1381 __debug_iter& operator+=(difference_type __n); 1382 _LIBCPP_INLINE_VISIBILITY __debug_iter operator- (difference_type __n) const 1383 {__debug_iter __t(*this); __t -= __n; return __t;} 1384 _LIBCPP_INLINE_VISIBILITY __debug_iter& operator-=(difference_type __n) 1385 {*this += -__n; return *this;} 1386 _LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const 1387 {return *(*this + __n);} 1388 1389private: 1390 _LIBCPP_INLINE_VISIBILITY __debug_iter(const __container_type* __c, iterator_type __x) 1391 : __i(__x), __next(0), __cont(0) {__set_owner(__c);} 1392 _LIBCPP_INLINE_VISIBILITY iterator_type base() const {return __i;} 1393 1394 void __set_owner(const __container_type* __c); 1395 void __remove_owner(); 1396 static void __remove_all(__container_type* __c); 1397 static void swap(__container_type* __x, __container_type* __y); 1398 1399 _LIBCPP_INLINE_VISIBILITY bool __is_deref() const 1400 {return __is_deref(__is_random_access_iterator<iterator_type>());} 1401 bool __is_deref(false_type) const; 1402 bool __is_deref(true_type) const; 1403 _LIBCPP_INLINE_VISIBILITY bool __can_decrement() const 1404 {return __can_decrement(integral_constant<int, is_pointer<iterator_type>::value ? 2: 1405 __is_random_access_iterator<iterator_type>::value ? 1 : 0>());} 1406 bool __can_decrement(integral_constant<int, 0>) const; 1407 bool __can_decrement(integral_constant<int, 1>) const; 1408 bool __can_decrement(integral_constant<int, 2>) const; 1409 _LIBCPP_INLINE_VISIBILITY bool __can_increment() const 1410 {return __can_increment(integral_constant<int, is_pointer<iterator_type>::value ? 2: 1411 __is_random_access_iterator<iterator_type>::value ? 1 : 0>());} 1412 bool __can_increment(integral_constant<int, 0>) const; 1413 bool __can_increment(integral_constant<int, 1>) const; 1414 bool __can_increment(integral_constant<int, 2>) const; 1415 1416 _LIBCPP_INLINE_VISIBILITY bool __can_add(difference_type __n) const 1417 {return __can_add(__n, is_pointer<iterator_type>());} 1418 bool __can_add(difference_type __n, false_type) const; 1419 bool __can_add(difference_type __n, true_type) const; 1420 1421 template <class _Cp, class _Up> friend class __debug_iter; 1422 friend class _Container::__self; 1423 1424 template <class _Cp, class _Iter1, class _Iter2> 1425 friend 1426 bool 1427 operator==(const __debug_iter<_Cp, _Iter1>&, const __debug_iter<_Cp, _Iter2>&); 1428 1429 template <class _Cp, class _Iter1, class _Iter2> 1430 friend 1431 bool 1432 operator<(const __debug_iter<_Cp, _Iter1>&, const __debug_iter<_Cp, _Iter2>&); 1433 1434 template <class _Cp, class _Iter1, class _Iter2> 1435 friend 1436 bool 1437 operator!=(const __debug_iter<_Cp, _Iter1>&, const __debug_iter<_Cp, _Iter2>&); 1438 1439 template <class _Cp, class _Iter1, class _Iter2> 1440 friend 1441 bool 1442 operator>(const __debug_iter<_Cp, _Iter1>&, const __debug_iter<_Cp, _Iter2>&); 1443 1444 template <class _Cp, class _Iter1, class _Iter2> 1445 friend 1446 bool 1447 operator>=(const __debug_iter<_Cp, _Iter1>&, const __debug_iter<_Cp, _Iter2>&); 1448 1449 template <class _Cp, class _Iter1, class _Iter2> 1450 friend 1451 bool 1452 operator<=(const __debug_iter<_Cp, _Iter1>&, const __debug_iter<_Cp, _Iter2>&); 1453 1454 template <class _Cp, class _Iter1, class _Iter2> 1455 friend 1456 typename __debug_iter<_Cp, _Iter1>::difference_type 1457 operator-(const __debug_iter<_Cp, _Iter1>&, const __debug_iter<_Cp, _Iter2>&); 1458 1459 template <class _Cp, class _Iter1> 1460 friend 1461 __debug_iter<_Cp, _Iter1> 1462 operator+(typename __debug_iter<_Cp, _Iter1>::difference_type, const __debug_iter<_Cp, _Iter1>&); 1463}; 1464 1465template <class _Container, class _Iter> 1466__debug_iter<_Container, _Iter>& 1467__debug_iter<_Container, _Iter>::operator=(const __debug_iter& __x) 1468{ 1469 if (this != &__x) 1470 { 1471 __remove_owner(); 1472 __i = __x.__i; 1473 __set_owner(__x.__cont); 1474 } 1475 return *this; 1476} 1477 1478template <class _Container, class _Iter> 1479void 1480__debug_iter<_Container, _Iter>::__set_owner(const __container_type* __c) 1481{ 1482 __cont = const_cast<__container_type*>(__c); 1483 __debug_iter*& __head = __cont->__get_iterator_list(this); 1484 __next = __head; 1485 __head = this; 1486} 1487 1488template <class _Container, class _Iter> 1489void 1490__debug_iter<_Container, _Iter>::__remove_owner() 1491{ 1492 if (__cont) 1493 { 1494 __debug_iter*& __head = __cont->__get_iterator_list(this); 1495 if (__head == this) 1496 __head = __next; 1497 else 1498 { 1499 __debug_iter* __prev = __head; 1500 for (__debug_iter* __p = __head->__next; __p != this; __p = __p->__next) 1501 __prev = __p; 1502 __prev->__next = __next; 1503 } 1504 __cont = 0; 1505 } 1506} 1507 1508template <class _Container, class _Iter> 1509void 1510__debug_iter<_Container, _Iter>::__remove_all(__container_type* __c) 1511{ 1512 __debug_iter*& __head = __c->__get_iterator_list((__debug_iter*)0); 1513 __debug_iter* __p = __head; 1514 __head = 0; 1515 while (__p) 1516 { 1517 __p->__cont = 0; 1518 __debug_iter* __n = __p->__next; 1519 __p->__next = 0; 1520 __p = __n; 1521 } 1522} 1523 1524template <class _Container, class _Iter> 1525void 1526__debug_iter<_Container, _Iter>::swap(__container_type* __x, __container_type* __y) 1527{ 1528 __debug_iter*& __head_x = __x->__get_iterator_list((__debug_iter*)0); 1529 __debug_iter*& __head_y = __y->__get_iterator_list((__debug_iter*)0); 1530 __debug_iter* __p = __head_x; 1531 __head_x = __head_y; 1532 __head_y = __p; 1533 for (__p = __head_x; __p; __p = __p->__next) 1534 __p->__cont = __x; 1535 for (__p = __head_y; __p; __p = __p->__next) 1536 __p->__cont = __y; 1537} 1538 1539template <class _Container, class _Iter> 1540bool 1541__debug_iter<_Container, _Iter>::__is_deref(false_type) const 1542{ 1543 if (__cont == 0) 1544 return false; 1545 return __i != __cont->end().base(); 1546} 1547 1548template <class _Container, class _Iter> 1549bool 1550__debug_iter<_Container, _Iter>::__is_deref(true_type) const 1551{ 1552 if (__cont == 0) 1553 return false; 1554 return __i < __cont->end().base(); 1555} 1556 1557template <class _Container, class _Iter> 1558bool 1559__debug_iter<_Container, _Iter>::__can_decrement(integral_constant<int, 0>) const 1560{ 1561 if (__cont == 0) 1562 return false; 1563 return __i != __cont->begin().base(); 1564} 1565 1566template <class _Container, class _Iter> 1567bool 1568__debug_iter<_Container, _Iter>::__can_decrement(integral_constant<int, 1>) const 1569{ 1570 if (__cont == 0) 1571 return false; 1572 iterator_type __b = __cont->begin().base(); 1573 return __b < __i && __i <= __b + __cont->size(); 1574} 1575 1576template <class _Container, class _Iter> 1577bool 1578__debug_iter<_Container, _Iter>::__can_decrement(integral_constant<int, 2>) const 1579{ 1580 if (__cont == 0) 1581 return false; 1582 iterator_type __b = __cont->begin().base(); 1583 return __b < __i && __i <= __b + __cont->size(); 1584} 1585 1586template <class _Container, class _Iter> 1587bool 1588__debug_iter<_Container, _Iter>::__can_increment(integral_constant<int, 0>) const 1589{ 1590 if (__cont == 0) 1591 return false; 1592 return __i != __cont->end().base(); 1593} 1594 1595template <class _Container, class _Iter> 1596bool 1597__debug_iter<_Container, _Iter>::__can_increment(integral_constant<int, 1>) const 1598{ 1599 if (__cont == 0) 1600 return false; 1601 iterator_type __b = __cont->begin().base(); 1602 return __b <= __i && __i < __b + __cont->size(); 1603} 1604 1605template <class _Container, class _Iter> 1606bool 1607__debug_iter<_Container, _Iter>::__can_increment(integral_constant<int, 2>) const 1608{ 1609 if (__cont == 0) 1610 return false; 1611 iterator_type __b = __cont->begin().base(); 1612 return __b <= __i && __i < __b + __cont->size(); 1613} 1614 1615template <class _Container, class _Iter> 1616bool 1617__debug_iter<_Container, _Iter>::__can_add(difference_type __n, false_type) const 1618{ 1619 if (__cont == 0) 1620 return false; 1621 iterator_type __b = __cont->begin().base(); 1622 iterator_type __j = __i + __n; 1623 return __b <= __j && __j <= __b + __cont->size(); 1624} 1625 1626template <class _Container, class _Iter> 1627bool 1628__debug_iter<_Container, _Iter>::__can_add(difference_type __n, true_type) const 1629{ 1630 if (__cont == 0) 1631 return false; 1632 iterator_type __b = __cont->begin().base(); 1633 iterator_type __j = __i + __n; 1634 return __b <= __j && __j <= __b + __cont->size(); 1635} 1636 1637template <class _Container, class _Iter> 1638__debug_iter<_Container, _Iter>& 1639__debug_iter<_Container, _Iter>::operator+=(difference_type __n) 1640{ 1641 assert(__can_add(__n)); 1642 __i += __n; 1643 return *this; 1644} 1645 1646template <class _Container, class _Iter1, class _Iter2> 1647inline _LIBCPP_INLINE_VISIBILITY 1648bool 1649operator==(const __debug_iter<_Container, _Iter1>& __x, const __debug_iter<_Container, _Iter2>& __y) 1650{ 1651 assert(__x.__cont && __x.__cont == __y.__cont); 1652 return __x.base() == __y.base(); 1653} 1654 1655template <class _Container, class _Iter1, class _Iter2> 1656inline _LIBCPP_INLINE_VISIBILITY 1657bool 1658operator!=(const __debug_iter<_Container, _Iter1>& __x, const __debug_iter<_Container, _Iter2>& __y) 1659{ 1660 return !(__x == __y); 1661} 1662 1663template <class _Container, class _Iter1, class _Iter2> 1664inline _LIBCPP_INLINE_VISIBILITY 1665bool 1666operator<(const __debug_iter<_Container, _Iter1>& __x, const __debug_iter<_Container, _Iter2>& __y) 1667{ 1668 assert(__x.__cont && __x.__cont == __y.__cont); 1669 return __x.base() < __y.base(); 1670} 1671 1672template <class _Container, class _Iter1, class _Iter2> 1673inline _LIBCPP_INLINE_VISIBILITY 1674bool 1675operator>(const __debug_iter<_Container, _Iter1>& __x, const __debug_iter<_Container, _Iter2>& __y) 1676{ 1677 return __y < __x; 1678} 1679 1680template <class _Container, class _Iter1, class _Iter2> 1681inline _LIBCPP_INLINE_VISIBILITY 1682bool 1683operator>=(const __debug_iter<_Container, _Iter1>& __x, const __debug_iter<_Container, _Iter2>& __y) 1684{ 1685 return !(__x < __y); 1686} 1687 1688template <class _Container, class _Iter1, class _Iter2> 1689inline _LIBCPP_INLINE_VISIBILITY 1690bool 1691operator<=(const __debug_iter<_Container, _Iter1>& __x, const __debug_iter<_Container, _Iter2>& __y) 1692{ 1693 return !(__y < __x); 1694} 1695 1696template <class _Container, class _Iter1, class _Iter2> 1697inline _LIBCPP_INLINE_VISIBILITY 1698typename __debug_iter<_Container, _Iter1>::difference_type 1699operator-(const __debug_iter<_Container, _Iter1>& __x, const __debug_iter<_Container, _Iter2>& __y) 1700{ 1701 assert(__x.__cont && __x.__cont == __y.__cont); 1702 return __x.base() - __y.base(); 1703} 1704 1705template <class _Container, class _Iter> 1706inline _LIBCPP_INLINE_VISIBILITY 1707__debug_iter<_Container, _Iter> 1708operator+(typename __debug_iter<_Container, _Iter>::difference_type __n, 1709 const __debug_iter<_Container, _Iter>& __x) 1710{ 1711 return __x + __n; 1712} 1713 1714#endif // _LIBCPP_DEBUG 1715 1716#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_TRAILING_RETURN) 1717 1718template <class _C> 1719inline _LIBCPP_INLINE_VISIBILITY 1720auto 1721begin(_C& __c) -> decltype(__c.begin()) 1722{ 1723 return __c.begin(); 1724} 1725 1726template <class _C> 1727inline _LIBCPP_INLINE_VISIBILITY 1728auto 1729begin(const _C& __c) -> decltype(__c.begin()) 1730{ 1731 return __c.begin(); 1732} 1733 1734template <class _C> 1735inline _LIBCPP_INLINE_VISIBILITY 1736auto 1737end(_C& __c) -> decltype(__c.end()) 1738{ 1739 return __c.end(); 1740} 1741 1742template <class _C> 1743inline _LIBCPP_INLINE_VISIBILITY 1744auto 1745end(const _C& __c) -> decltype(__c.end()) 1746{ 1747 return __c.end(); 1748} 1749 1750#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_TRAILING_RETURN) 1751 1752template <class _C> 1753inline _LIBCPP_INLINE_VISIBILITY 1754typename _C::iterator 1755begin(_C& __c) 1756{ 1757 return __c.begin(); 1758} 1759 1760template <class _C> 1761inline _LIBCPP_INLINE_VISIBILITY 1762typename _C::const_iterator 1763begin(const _C& __c) 1764{ 1765 return __c.begin(); 1766} 1767 1768template <class _C> 1769inline _LIBCPP_INLINE_VISIBILITY 1770typename _C::iterator 1771end(_C& __c) 1772{ 1773 return __c.end(); 1774} 1775 1776template <class _C> 1777inline _LIBCPP_INLINE_VISIBILITY 1778typename _C::const_iterator 1779end(const _C& __c) 1780{ 1781 return __c.end(); 1782} 1783 1784#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_TRAILING_RETURN) 1785 1786template <class _T, size_t _N> 1787inline _LIBCPP_INLINE_VISIBILITY 1788_T* 1789begin(_T (&__array)[_N]) 1790{ 1791 return __array; 1792} 1793 1794template <class _T, size_t _N> 1795inline _LIBCPP_INLINE_VISIBILITY 1796_T* 1797end(_T (&__array)[_N]) 1798{ 1799 return __array + _N; 1800} 1801 1802_LIBCPP_END_NAMESPACE_STD 1803 1804#endif // _LIBCPP_ITERATOR 1805