00001
00002
00003
00004
00005
00006
00007
00008
00009
00010
00011
00012
00013
00014
00015
00016
00017
00018
00019
00020
00021
00022
00023
00024
00025
00026
00027
00028
00029
00030
00031
00032
00033
00034
00035
00036
00037
00038
00039
00040
00041
00042
00043
00044
00045
00046
00047
00048
00049
00050
00051
00052
00053
00054
00055
00065 #ifndef __GLIBCPP_INTERNAL_ITERATOR_H
00066 #define __GLIBCPP_INTERNAL_ITERATOR_H
00067
00068 namespace std
00069 {
00070
00089 template<typename _Iterator>
00090 class reverse_iterator
00091 : public iterator<typename iterator_traits<_Iterator>::iterator_category,
00092 typename iterator_traits<_Iterator>::value_type,
00093 typename iterator_traits<_Iterator>::difference_type,
00094 typename iterator_traits<_Iterator>::pointer,
00095 typename iterator_traits<_Iterator>::reference>
00096 {
00097 protected:
00098 _Iterator current;
00099
00100 public:
00101 typedef _Iterator iterator_type;
00102 typedef typename iterator_traits<_Iterator>::difference_type
00103 difference_type;
00104 typedef typename iterator_traits<_Iterator>::reference reference;
00105 typedef typename iterator_traits<_Iterator>::pointer pointer;
00106
00107 public:
00111 reverse_iterator() { }
00112
00116 explicit
00117 reverse_iterator(iterator_type __x) : current(__x) { }
00118
00122 reverse_iterator(const reverse_iterator& __x)
00123 : current(__x.current) { }
00124
00129 template<typename _Iter>
00130 reverse_iterator(const reverse_iterator<_Iter>& __x)
00131 : current(__x.base()) { }
00132
00136 iterator_type
00137 base() const { return current; }
00138
00144 reference
00145 operator*() const
00146 {
00147 _Iterator __tmp = current;
00148 return *--__tmp;
00149 }
00150
00156 pointer
00157 operator->() const { return &(operator*()); }
00158
00164 reverse_iterator&
00165 operator++()
00166 {
00167 --current;
00168 return *this;
00169 }
00170
00176 reverse_iterator
00177 operator++(int)
00178 {
00179 reverse_iterator __tmp = *this;
00180 --current;
00181 return __tmp;
00182 }
00183
00189 reverse_iterator&
00190 operator--()
00191 {
00192 ++current;
00193 return *this;
00194 }
00195
00201 reverse_iterator operator--(int)
00202 {
00203 reverse_iterator __tmp = *this;
00204 ++current;
00205 return __tmp;
00206 }
00207
00213 reverse_iterator
00214 operator+(difference_type __n) const
00215 { return reverse_iterator(current - __n); }
00216
00222 reverse_iterator&
00223 operator+=(difference_type __n)
00224 {
00225 current -= __n;
00226 return *this;
00227 }
00228
00234 reverse_iterator
00235 operator-(difference_type __n) const
00236 { return reverse_iterator(current + __n); }
00237
00243 reverse_iterator&
00244 operator-=(difference_type __n)
00245 {
00246 current += __n;
00247 return *this;
00248 }
00249
00255 reference
00256 operator[](difference_type __n) const { return *(*this + __n); }
00257 };
00258
00260
00269 template<typename _Iterator>
00270 inline bool
00271 operator==(const reverse_iterator<_Iterator>& __x,
00272 const reverse_iterator<_Iterator>& __y)
00273 { return __x.base() == __y.base(); }
00274
00275 template<typename _Iterator>
00276 inline bool
00277 operator<(const reverse_iterator<_Iterator>& __x,
00278 const reverse_iterator<_Iterator>& __y)
00279 { return __y.base() < __x.base(); }
00280
00281 template<typename _Iterator>
00282 inline bool
00283 operator!=(const reverse_iterator<_Iterator>& __x,
00284 const reverse_iterator<_Iterator>& __y)
00285 { return !(__x == __y); }
00286
00287 template<typename _Iterator>
00288 inline bool
00289 operator>(const reverse_iterator<_Iterator>& __x,
00290 const reverse_iterator<_Iterator>& __y)
00291 { return __y < __x; }
00292
00293 template<typename _Iterator>
00294 inline bool
00295 operator<=(const reverse_iterator<_Iterator>& __x,
00296 const reverse_iterator<_Iterator>& __y)
00297 { return !(__y < __x); }
00298
00299 template<typename _Iterator>
00300 inline bool
00301 operator>=(const reverse_iterator<_Iterator>& __x,
00302 const reverse_iterator<_Iterator>& __y)
00303 { return !(__x < __y); }
00304
00305 template<typename _Iterator>
00306 inline typename reverse_iterator<_Iterator>::difference_type
00307 operator-(const reverse_iterator<_Iterator>& __x,
00308 const reverse_iterator<_Iterator>& __y)
00309 { return __y.base() - __x.base(); }
00310
00311 template<typename _Iterator>
00312 inline reverse_iterator<_Iterator>
00313 operator+(typename reverse_iterator<_Iterator>::difference_type __n,
00314 const reverse_iterator<_Iterator>& __x)
00315 { return reverse_iterator<_Iterator>(__x.base() - __n); }
00317
00318
00327 template<typename _Container>
00328 class back_insert_iterator
00329 : public iterator<output_iterator_tag, void, void, void, void>
00330 {
00331 protected:
00332 _Container* container;
00333
00334 public:
00336 typedef _Container container_type;
00337
00339 explicit
00340 back_insert_iterator(_Container& __x) : container(&__x) { }
00341
00353 back_insert_iterator&
00354 operator=(typename _Container::const_reference __value)
00355 {
00356 container->push_back(__value);
00357 return *this;
00358 }
00359
00361 back_insert_iterator&
00362 operator*() { return *this; }
00363
00365 back_insert_iterator&
00366 operator++() { return *this; }
00367
00369 back_insert_iterator
00370 operator++(int) { return *this; }
00371 };
00372
00384 template<typename _Container>
00385 inline back_insert_iterator<_Container>
00386 back_inserter(_Container& __x)
00387 { return back_insert_iterator<_Container>(__x); }
00388
00397 template<typename _Container>
00398 class front_insert_iterator
00399 : public iterator<output_iterator_tag, void, void, void, void>
00400 {
00401 protected:
00402 _Container* container;
00403
00404 public:
00406 typedef _Container container_type;
00407
00409 explicit front_insert_iterator(_Container& __x) : container(&__x) { }
00410
00422 front_insert_iterator&
00423 operator=(typename _Container::const_reference __value)
00424 {
00425 container->push_front(__value);
00426 return *this;
00427 }
00428
00430 front_insert_iterator&
00431 operator*() { return *this; }
00432
00434 front_insert_iterator&
00435 operator++() { return *this; }
00436
00438 front_insert_iterator
00439 operator++(int) { return *this; }
00440 };
00441
00453 template<typename _Container>
00454 inline front_insert_iterator<_Container>
00455 front_inserter(_Container& __x)
00456 { return front_insert_iterator<_Container>(__x); }
00457
00470 template<typename _Container>
00471 class insert_iterator
00472 : public iterator<output_iterator_tag, void, void, void, void>
00473 {
00474 protected:
00475 _Container* container;
00476 typename _Container::iterator iter;
00477
00478 public:
00480 typedef _Container container_type;
00481
00486 insert_iterator(_Container& __x, typename _Container::iterator __i)
00487 : container(&__x), iter(__i) {}
00488
00512 insert_iterator&
00513 operator=(const typename _Container::const_reference __value)
00514 {
00515 iter = container->insert(iter, __value);
00516 ++iter;
00517 return *this;
00518 }
00519
00521 insert_iterator&
00522 operator*() { return *this; }
00523
00525 insert_iterator&
00526 operator++() { return *this; }
00527
00529 insert_iterator&
00530 operator++(int) { return *this; }
00531 };
00532
00544 template<typename _Container, typename _Iterator>
00545 inline insert_iterator<_Container>
00546 inserter(_Container& __x, _Iterator __i)
00547 {
00548 return insert_iterator<_Container>(__x,
00549 typename _Container::iterator(__i));
00550 }
00551 }
00552
00553 namespace __gnu_cxx
00554 {
00555
00556
00557
00558
00559
00560
00561
00562 using std::iterator_traits;
00563 using std::iterator;
00564 template<typename _Iterator, typename _Container>
00565 class __normal_iterator
00566 : public iterator<typename iterator_traits<_Iterator>::iterator_category,
00567 typename iterator_traits<_Iterator>::value_type,
00568 typename iterator_traits<_Iterator>::difference_type,
00569 typename iterator_traits<_Iterator>::pointer,
00570 typename iterator_traits<_Iterator>::reference>
00571 {
00572 protected:
00573 _Iterator _M_current;
00574
00575 public:
00576 typedef typename iterator_traits<_Iterator>::difference_type
00577 difference_type;
00578 typedef typename iterator_traits<_Iterator>::reference reference;
00579 typedef typename iterator_traits<_Iterator>::pointer pointer;
00580
00581 __normal_iterator() : _M_current(_Iterator()) { }
00582
00583 explicit
00584 __normal_iterator(const _Iterator& __i) : _M_current(__i) { }
00585
00586
00587 template<typename _Iter>
00588 inline __normal_iterator(const __normal_iterator<_Iter, _Container>& __i)
00589 : _M_current(__i.base()) { }
00590
00591
00592 reference
00593 operator*() const { return *_M_current; }
00594
00595 pointer
00596 operator->() const { return _M_current; }
00597
00598 __normal_iterator&
00599 operator++() { ++_M_current; return *this; }
00600
00601 __normal_iterator
00602 operator++(int) { return __normal_iterator(_M_current++); }
00603
00604
00605 __normal_iterator&
00606 operator--() { --_M_current; return *this; }
00607
00608 __normal_iterator
00609 operator--(int) { return __normal_iterator(_M_current--); }
00610
00611
00612 reference
00613 operator[](const difference_type& __n) const
00614 { return _M_current[__n]; }
00615
00616 __normal_iterator&
00617 operator+=(const difference_type& __n)
00618 { _M_current += __n; return *this; }
00619
00620 __normal_iterator
00621 operator+(const difference_type& __n) const
00622 { return __normal_iterator(_M_current + __n); }
00623
00624 __normal_iterator&
00625 operator-=(const difference_type& __n)
00626 { _M_current -= __n; return *this; }
00627
00628 __normal_iterator
00629 operator-(const difference_type& __n) const
00630 { return __normal_iterator(_M_current - __n); }
00631
00632 const _Iterator&
00633 base() const { return _M_current; }
00634 };
00635
00636
00637
00638
00639
00640
00641
00642
00643
00644
00645 template<typename _IteratorL, typename _IteratorR, typename _Container>
00646 inline bool
00647 operator==(const __normal_iterator<_IteratorL, _Container>& __lhs,
00648 const __normal_iterator<_IteratorR, _Container>& __rhs)
00649 { return __lhs.base() == __rhs.base(); }
00650
00651 template<typename _Iterator, typename _Container>
00652 inline bool
00653 operator==(const __normal_iterator<_Iterator, _Container>& __lhs,
00654 const __normal_iterator<_Iterator, _Container>& __rhs)
00655 { return __lhs.base() == __rhs.base(); }
00656
00657 template<typename _IteratorL, typename _IteratorR, typename _Container>
00658 inline bool
00659 operator!=(const __normal_iterator<_IteratorL, _Container>& __lhs,
00660 const __normal_iterator<_IteratorR, _Container>& __rhs)
00661 { return __lhs.base() != __rhs.base(); }
00662
00663 template<typename _Iterator, typename _Container>
00664 inline bool
00665 operator!=(const __normal_iterator<_Iterator, _Container>& __lhs,
00666 const __normal_iterator<_Iterator, _Container>& __rhs)
00667 { return __lhs.base() != __rhs.base(); }
00668
00669
00670 template<typename _IteratorL, typename _IteratorR, typename _Container>
00671 inline bool
00672 operator<(const __normal_iterator<_IteratorL, _Container>& __lhs,
00673 const __normal_iterator<_IteratorR, _Container>& __rhs)
00674 { return __lhs.base() < __rhs.base(); }
00675
00676 template<typename _Iterator, typename _Container>
00677 inline bool
00678 operator<(const __normal_iterator<_Iterator, _Container>& __lhs,
00679 const __normal_iterator<_Iterator, _Container>& __rhs)
00680 { return __lhs.base() < __rhs.base(); }
00681
00682 template<typename _IteratorL, typename _IteratorR, typename _Container>
00683 inline bool
00684 operator>(const __normal_iterator<_IteratorL, _Container>& __lhs,
00685 const __normal_iterator<_IteratorR, _Container>& __rhs)
00686 { return __lhs.base() > __rhs.base(); }
00687
00688 template<typename _Iterator, typename _Container>
00689 inline bool
00690 operator>(const __normal_iterator<_Iterator, _Container>& __lhs,
00691 const __normal_iterator<_Iterator, _Container>& __rhs)
00692 { return __lhs.base() > __rhs.base(); }
00693
00694 template<typename _IteratorL, typename _IteratorR, typename _Container>
00695 inline bool
00696 operator<=(const __normal_iterator<_IteratorL, _Container>& __lhs,
00697 const __normal_iterator<_IteratorR, _Container>& __rhs)
00698 { return __lhs.base() <= __rhs.base(); }
00699
00700 template<typename _Iterator, typename _Container>
00701 inline bool
00702 operator<=(const __normal_iterator<_Iterator, _Container>& __lhs,
00703 const __normal_iterator<_Iterator, _Container>& __rhs)
00704 { return __lhs.base() <= __rhs.base(); }
00705
00706 template<typename _IteratorL, typename _IteratorR, typename _Container>
00707 inline bool
00708 operator>=(const __normal_iterator<_IteratorL, _Container>& __lhs,
00709 const __normal_iterator<_IteratorR, _Container>& __rhs)
00710 { return __lhs.base() >= __rhs.base(); }
00711
00712 template<typename _Iterator, typename _Container>
00713 inline bool
00714 operator>=(const __normal_iterator<_Iterator, _Container>& __lhs,
00715 const __normal_iterator<_Iterator, _Container>& __rhs)
00716 { return __lhs.base() >= __rhs.base(); }
00717
00718
00719
00720
00721
00722 template<typename _IteratorL, typename _IteratorR, typename _Container>
00723 inline typename __normal_iterator<_IteratorL, _Container>::difference_type
00724 operator-(const __normal_iterator<_IteratorL, _Container>& __lhs,
00725 const __normal_iterator<_IteratorR, _Container>& __rhs)
00726 { return __lhs.base() - __rhs.base(); }
00727
00728 template<typename _Iterator, typename _Container>
00729 inline __normal_iterator<_Iterator, _Container>
00730 operator+(typename __normal_iterator<_Iterator, _Container>::difference_type __n,
00731 const __normal_iterator<_Iterator, _Container>& __i)
00732 { return __normal_iterator<_Iterator, _Container>(__i.base() + __n); }
00733 }
00734
00735 #endif
00736
00737
00738
00739