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1/////////////////////////////////////////////////////////////////////////////
2// Name: No names yet.
3// Purpose: Contrib. demo
4// Author: Aleksandras Gluchovas
5// Modified by:
6// Created: 27/09/98
7// RCS-ID: $Id$
8// Copyright: (c) Aleskandars Gluchovas
9// Licence: wxWindows licence
10/////////////////////////////////////////////////////////////////////////////
11
12#ifndef __WXSTLVEC_G__
13#define __WXSTLVEC_G__
14
15#include <memory.h>
16#include <string.h> // imports memmove()
17#include <stddef.h>
18#include <sys/types.h>
19#include <limits.h>
20#include <new>
21
22// the below macro used internally (see actual interface after this macro)
23
24#define __DEFINE_STL_VECTOR_DEEP( vectorClass, Type ) class vectorClass {\
25\
26public:\
27 typedef Type value_type;\
28 typedef value_type* iterator;\
29 typedef const value_type* const_iterator;\
30 typedef iterator pointer;\
31 typedef const iterator const_pointer;\
32 typedef value_type& reference;\
33 typedef const value_type& const_reference;\
34 typedef size_t size_type;\
35 typedef ptrdiff_t difference_type;\
36\
37 typedef iterator OutputIterator;\
38 typedef const_iterator InputIterator;\
39\
40protected:\
41\
42 inline void PlacementCopy( const_iterator first, const_iterator last, iterator result )\
43 {\
44 while ( first != last ) \
45 new (result++) value_type(*first++);\
46 }\
47\
48 inline void ConstructObjects( iterator first, iterator last, const value_type& pattern )\
49 {\
50 while( first != last ) \
51 new (first++) value_type(pattern);\
52 }\
53\
54 inline void CopyObjects( iterator first, iterator last, iterator result )\
55 {\
56 while( first != last ) \
57 *result++ = *first++;\
58 }\
59\
60 inline void CopyObjectsBack( iterator first, iterator last, iterator result )\
61 {\
62 result += difference_type(last,first);\
63\
64 while( first != last ) \
65 *(--result) = *(--last);\
66 }\
67\
68public:\
69\
70 class reverse_iterator \
71 {\
72 friend class vectorClass;\
73 friend class const_reverse_iterator;\
74\
75 public:\
76 iterator mpPos;\
77\
78 public:\
79\
80 reverse_iterator() {}\
81\
82 reverse_iterator ( iterator pPos )\
83 {\
84 mpPos = pPos;\
85 }\
86 \
87 int operator==( const reverse_iterator& rhs ) const { return (mpPos == rhs.mpPos); }\
88 int operator!=( const reverse_iterator& rhs ) const { return (mpPos != rhs.mpPos); }\
89\
90 inline reverse_iterator( const reverse_iterator& other )\
91 {\
92 mpPos = other.mpPos;\
93 }\
94\
95 inline const reverse_iterator& operator--() \
96 {\
97 --mpPos;\
98 return *this;\
99 }\
100\
101 inline reverse_iterator operator--(int)\
102 {\
103 reverse_iterator tmp = *this;\
104 --mpPos;\
105 return tmp;\
106 }\
107\
108 inline const reverse_iterator & operator++() \
109 {\
110 ++mpPos;\
111 return *this;\
112 }\
113\
114 inline reverse_iterator operator++(int)\
115 {\
116 reverse_iterator tmp = *this;\
117 ++mpPos;\
118 return tmp;\
119 }\
120\
121 inline const_reference operator*() const { return *mpPos; }\
122 };\
123\
124\
125 class const_reverse_iterator \
126 {\
127 protected:\
128 iterator mpPos;\
129 public:\
130\
131 const_reverse_iterator() {}\
132\
133 const_reverse_iterator( const iterator pPos )\
134 {\
135 mpPos = pPos;\
136 }\
137 \
138 int operator==( const const_reverse_iterator& rhs ) const { return (mpPos == rhs.mpPos); }\
139 int operator!=( const const_reverse_iterator& rhs ) const { return (mpPos != rhs.mpPos); }\
140\
141 inline const_reverse_iterator( const reverse_iterator& other )\
142 {\
143 mpPos = other.mpPos;\
144 }\
145\
146 inline const const_reverse_iterator& operator--() \
147 {\
148 --mpPos;\
149 return *this;\
150 }\
151\
152 inline const_reverse_iterator operator--(int)\
153 {\
154 const_reverse_iterator tmp = *this;\
155 --mpPos;\
156 return tmp;\
157 }\
158\
159 inline const const_reverse_iterator & operator++() \
160 {\
161 ++mpPos;\
162 return *this;\
163 }\
164\
165 inline const_reverse_iterator operator++(int)\
166 {\
167 const_reverse_iterator tmp = *this;\
168 ++mpPos;\
169 return tmp;\
170 }\
171\
172 inline const_reference operator*() const { return *mpPos; }\
173 };\
174\
175protected:\
176 \
177 pointer mpStart;\
178 pointer mpEnd;\
179 pointer mpEndOfBuf;\
180\
181protected:\
182\
183 inline void quick_sort(int low, int hi) \
184 {\
185 int pivot_index;\
186 int left, right;\
187\
188 pivot_index = ( !(mpStart[low] < mpStart[low+1])) ? low : (low+1);\
189 value_type pivot_value = mpStart[pivot_index];\
190\
191 left = low; right = hi;\
192 do \
193 {\
194 while ((left <= hi) && (mpStart[left] < pivot_value)) left++;\
195\
196 while ((right >= low) && (pivot_value < mpStart[right])) right--;\
197\
198 if (left <= right) \
199 {\
200 value_type tmp = mpStart[left];\
201 mpStart[left] = mpStart[right];\
202 mpStart[right] = tmp;\
203\
204 left++;\
205 right--;\
206 }\
207 \
208 } while (left <= right);\
209 if (low < right) quick_sort(low, right);\
210 if (left < hi) quick_sort(left, hi);\
211 }\
212\
213 inline void DestructRange( iterator first, iterator last )\
214 {\
215 typedef value_type value_type_local;\
216\
217 while ( first != last ) \
218 {\
219 first->value_type_local::~value_type_local();\
220 ++first;\
221 }\
222 }\
223\
224 inline iterator DoInsert(iterator position, const value_type& x)\
225 {\
226 if ( mpEnd < mpEndOfBuf )\
227 {\
228 new (mpEnd) value_type(*(mpEnd-1) );\
229 \
230 CopyObjectsBack( position, mpEnd, position + 1 );\
231 \
232 *position = x;\
233 \
234 ++mpEnd;\
235 \
236 return position;\
237 }\
238 \
239 size_type minBufLen = WXSTL_VECTOR_MIN_BUF_SIZE/sizeof(value_type);\
240 \
241 size_type doubledSize = size()*2;\
242 \
243 size_type newLen = ( doubledSize < minBufLen ) ? minBufLen : doubledSize;\
244 \
245 iterator pNewStart = (iterator)( new char[newLen*sizeof(value_type)] );\
246 \
247 PlacementCopy( mpStart, position, pNewStart );\
248 \
249 iterator atPosition = pNewStart + difference_type( position - mpStart );\
250 \
251 new (atPosition) value_type(x);\
252 \
253 iterator newPos = atPosition;\
254 \
255 ++atPosition;\
256 \
257 if ( mpStart ) \
258 {\
259 PlacementCopy( position, mpEnd, atPosition );\
260 DestructRange( mpStart, mpEnd );\
261 delete [](char*)mpStart;\
262 }\
263 \
264 mpEnd = atPosition + difference_type( mpEnd - position );\
265 \
266 mpStart = pNewStart;\
267 mpEndOfBuf = pNewStart + newLen;\
268 \
269 return newPos;\
270 }\
271\
272public:\
273\
274 inline vectorClass() : mpStart(0), \
275 mpEnd(0),\
276 mpEndOfBuf(0)\
277 {}\
278\
279 inline vectorClass( const_iterator first, const_iterator last )\
280 : mpStart(0),\
281 mpEnd(0),\
282 mpEndOfBuf(0)\
283 \
284 { while( first != last ) push_back( *first++ ); }\
285\
286 inline vectorClass( size_type n, const value_type& value = value_type() )\
287 : mpStart(0),\
288 mpEnd(0),\
289 mpEndOfBuf(0)\
290 \
291 { for( size_type i = 0; i != n; ++i ) push_back( value ); }\
292\
293 inline int operator==( const vectorClass& other )\
294 {\
295 size_type sz = size();\
296\
297 if ( sz != other.size() ) return 0;\
298\
299 for( size_type i = 0; i != sz; ++i )\
300\
301 if ( !( (*this)[i] == other[i] ) ) return 0;\
302\
303 return 1;\
304\
305 }\
306\
307 inline const vectorClass& operator=( const vectorClass& other )\
308 {\
309 if (mpStart) \
310 {\
311 DestructRange( begin(), end() );\
312 delete [](char*)mpStart; \
313 }\
314\
315 size_t newLen = difference_type( other.mpEndOfBuf - other.mpStart );\
316\
317 mpStart = (iterator)( new char[newLen*sizeof(value_type)] );\
318\
319 PlacementCopy( other.begin(), other.end(), mpStart );\
320\
321 mpEnd = mpStart + other.size();\
322\
323 mpEndOfBuf = mpStart + newLen;\
324\
325 return *this;\
326 }\
327\
328 inline vectorClass( const vectorClass& other )\
329 : mpStart(0),\
330 mpEnd(0),\
331 mpEndOfBuf(0)\
332 {\
333 this->operator=( other );\
334 }\
335\
336 inline ~vectorClass() \
337 { \
338 if (mpStart) \
339 {\
340 DestructRange( begin(), end() );\
341 delete [](char*)mpStart; \
342 }\
343 }\
344\
345 inline iterator begin() { return mpStart; }\
346\
347 inline const_iterator begin() const { return mpStart; }\
348\
349 inline iterator end() { return mpEnd; }\
350\
351 inline const_iterator end() const { return mpEnd; }\
352\
353 inline size_type size() const { return (size_type)difference_type(mpEnd-mpStart); }\
354\
355 inline size_type max_size() const { return UINT_MAX/sizeof(value_type); }\
356\
357 inline size_type capacity() const \
358 { return difference_type(mpEndOfBuf-mpStart)/sizeof(value_type); }\
359\
360 inline int empty() const { return mpStart == mpEnd; }\
361\
362 inline reference operator[](size_type n) { return *(mpStart+n); }\
363\
364 inline const_reference operator[](size_type n) const { return *(mpStart+n); }\
365\
366 inline reference front() { return (*mpStart); }\
367 \
368 inline const_reference front() const { return (*mpStart); }\
369\
370 inline reference back() { return (*(mpEnd-1)); }\
371\
372 inline const_reference back() const { return (*(mpEnd-1)); }\
373\
374 inline void reserve(size_type n) {}\
375\
376 inline void push_back(const value_type& x)\
377 {\
378 if ( mpEnd != mpEndOfBuf ) \
379 {\
380 new (mpEnd) value_type(x);\
381 ++mpEnd;\
382 }\
383 else\
384 DoInsert( mpEnd, x );\
385 }\
386\
387 inline iterator insert(iterator position, const value_type& x = value_type())\
388 {\
389 if ( position == mpEnd && mpEnd != mpEndOfBuf )\
390 {\
391 new (mpEnd) value_type(x);\
392 ++mpEnd;\
393 return (mpEnd-1);\
394 }\
395 else return DoInsert( position, x );\
396 }\
397\
398 inline void pop_back()\
399 {\
400 DestructRange( mpEnd-1, mpEnd );\
401\
402 --mpEnd;\
403 }\
404\
405 inline void erase(iterator first, iterator last)\
406 {\
407 if ( last == mpEnd )\
408 {\
409 DestructRange( first, last );\
410 mpEnd = first;\
411 return;\
412 }\
413 \
414 CopyObjects( last, last + difference_type( mpEnd - last ), first );\
415 \
416 iterator newEnd = mpEnd - difference_type( last - first );\
417 DestructRange( newEnd, mpEnd );\
418 \
419 mpEnd = newEnd;\
420 }\
421\
422 inline void erase( iterator position )\
423 {\
424 erase( position, position + 1 );\
425 }\
426\
427 inline void sort()\
428 {\
429 if ( size() < 2 ) return;\
430 quick_sort( 0, size()-1 );\
431 }\
432}
433
434/////////////////////////////// shallow-copy container ///////////////////////
435
436#define __DEFINE_STL_VECTOR_SHALLOW( vectorClass, Type ) class vectorClass {\
437\
438public:\
439 typedef Type value_type;\
440 typedef value_type* iterator;\
441 typedef const value_type* const_iterator;\
442 typedef iterator pointer;\
443 typedef const iterator const_pointer;\
444 typedef value_type& reference;\
445 typedef const value_type& const_reference;\
446 typedef size_t size_type;\
447 typedef ptrdiff_t difference_type;\
448\
449 typedef iterator OutputIterator;\
450 typedef const_iterator InputIterator;\
451\
452protected:\
453\
454 inline void PlacementCopy( const_iterator first, const_iterator last, iterator result )\
455 {\
456 memcpy(result, first, int(difference_type(last-first)*sizeof(value_type)) );\
457 }\
458\
459 inline void ConstructObjects( iterator first, iterator last, const value_type& pattern )\
460 {\
461 if ( sizeof(pattern) == 1 )\
462 \
463 memset( first, int(difference_type(last-first)/sizeof(value_type)), \
464 int(*((char*)&pattern)) );\
465 else\
466 while( first != last ) \
467 *first++ = pattern;\
468 }\
469\
470 inline void CopyObjects( iterator first, iterator last, iterator result )\
471 {\
472 memcpy(result, first, int(difference_type(last-first)*sizeof(value_type)) );\
473 }\
474\
475 inline void CopyObjectsBack( iterator first, iterator last, iterator result )\
476 {\
477 memmove(result, first, int(difference_type(last-first)*sizeof(value_type)) );\
478 }\
479\
480public:\
481\
482 class reverse_iterator \
483 {\
484 friend class vectorClass;\
485 friend class const_reverse_iterator;\
486\
487 public:\
488 iterator mpPos;\
489\
490 public:\
491\
492 reverse_iterator() {}\
493\
494 reverse_iterator ( iterator pPos )\
495 {\
496 mpPos = pPos;\
497 }\
498 \
499 int operator==( const reverse_iterator& rhs ) const { return (mpPos == rhs.mpPos); }\
500 int operator!=( const reverse_iterator& rhs ) const { return (mpPos != rhs.mpPos); }\
501\
502 inline reverse_iterator( const reverse_iterator& other )\
503 {\
504 mpPos = other.mpPos;\
505 }\
506\
507 inline const reverse_iterator& operator--() \
508 {\
509 --mpPos;\
510 return *this;\
511 }\
512\
513 inline reverse_iterator operator--(int)\
514 {\
515 reverse_iterator tmp = *this;\
516 --mpPos;\
517 return tmp;\
518 }\
519\
520 inline const reverse_iterator & operator++() \
521 {\
522 ++mpPos;\
523 return *this;\
524 }\
525\
526 inline reverse_iterator operator++(int)\
527 {\
528 reverse_iterator tmp = *this;\
529 ++mpPos;\
530 return tmp;\
531 }\
532\
533 inline const_reference operator*() const { return *mpPos; }\
534 };\
535\
536\
537 class const_reverse_iterator \
538 {\
539 protected:\
540 iterator mpPos;\
541 public:\
542\
543 const_reverse_iterator() {}\
544\
545 const_reverse_iterator( const iterator pPos )\
546 {\
547 mpPos = pPos;\
548 }\
549 \
550 int operator==( const const_reverse_iterator& rhs ) const { return (mpPos == rhs.mpPos); }\
551 int operator!=( const const_reverse_iterator& rhs ) const { return (mpPos != rhs.mpPos); }\
552\
553 inline const_reverse_iterator( const reverse_iterator& other )\
554 {\
555 mpPos = other.mpPos;\
556 }\
557\
558 inline const const_reverse_iterator& operator--() \
559 {\
560 --mpPos;\
561 return *this;\
562 }\
563\
564 inline const_reverse_iterator operator--(int)\
565 {\
566 const_reverse_iterator tmp = *this;\
567 --mpPos;\
568 return tmp;\
569 }\
570\
571 inline const const_reverse_iterator & operator++() \
572 {\
573 ++mpPos;\
574 return *this;\
575 }\
576\
577 inline const_reverse_iterator operator++(int)\
578 {\
579 const_reverse_iterator tmp = *this;\
580 ++mpPos;\
581 return tmp;\
582 }\
583\
584 inline const_reference operator*() const { return *mpPos; }\
585 };\
586\
587protected:\
588 \
589 pointer mpStart;\
590 pointer mpEnd;\
591 pointer mpEndOfBuf;\
592\
593protected:\
594\
595 inline void quick_sort(int low, int hi) \
596 {\
597 int pivot_index;\
598 int left, right;\
599\
600 pivot_index = ( !(mpStart[low] < mpStart[low+1])) ? low : (low+1);\
601 value_type pivot_value = mpStart[pivot_index];\
602\
603 left = low; right = hi;\
604 do \
605 {\
606 while ((left <= hi) && (mpStart[left] < pivot_value)) left++;\
607\
608 while ((right >= low) && (pivot_value < mpStart[right])) right--;\
609\
610 if (left <= right) \
611 {\
612 value_type tmp = mpStart[left];\
613 mpStart[left] = mpStart[right];\
614 mpStart[right] = tmp;\
615\
616 left++;\
617 right--;\
618 }\
619 \
620 } while (left <= right);\
621 if (low < right) quick_sort(low, right);\
622 if (left < hi) quick_sort(left, hi);\
623 }\
624\
625 inline void DestructRange( iterator first, iterator last )\
626 {\
627 }\
628\
629 inline iterator DoInsert(iterator position, const value_type& x)\
630 {\
631 if ( mpEnd < mpEndOfBuf )\
632 {\
633 new (mpEnd) value_type(*(mpEnd-1) );\
634 \
635 CopyObjectsBack( position, mpEnd, position + 1 );\
636 \
637 *position = x;\
638 \
639 ++mpEnd;\
640 \
641 return position;\
642 }\
643 \
644 size_type minBufLen = WXSTL_VECTOR_MIN_BUF_SIZE/sizeof(value_type);\
645 \
646 size_type doubledSize = size()*2;\
647 \
648 size_type newLen = ( doubledSize < minBufLen ) ? minBufLen : doubledSize;\
649 \
650 iterator pNewStart = (iterator)( new char[newLen*sizeof(value_type)] );\
651 \
652 PlacementCopy( mpStart, position, pNewStart );\
653 \
654 iterator atPosition = pNewStart + difference_type( position - mpStart );\
655 \
656 new (atPosition) value_type(x);\
657 \
658 iterator newPos = atPosition;\
659 \
660 ++atPosition;\
661 \
662 if ( mpStart ) \
663 {\
664 PlacementCopy( position, mpEnd, atPosition );\
665 DestructRange( mpStart, mpEnd );\
666 delete [](char*)mpStart;\
667 }\
668 \
669 mpEnd = atPosition + difference_type( mpEnd - position );\
670 \
671 mpStart = pNewStart;\
672 mpEndOfBuf = pNewStart + newLen;\
673 \
674 return newPos;\
675 }\
676\
677public:\
678\
679 inline vectorClass() : mpStart(0), \
680 mpEnd(0),\
681 mpEndOfBuf(0)\
682 {}\
683\
684 inline vectorClass( const_iterator first, const_iterator last )\
685 : mpStart(0),\
686 mpEnd(0),\
687 mpEndOfBuf(0)\
688 \
689 { while( first != last ) push_back( *first++ ); }\
690\
691 inline vectorClass( size_type n, const value_type& value = value_type() )\
692 : mpStart(0),\
693 mpEnd(0),\
694 mpEndOfBuf(0)\
695 \
696 { for( size_type i = 0; i != n; ++i ) push_back( value ); }\
697\
698 inline int operator==( const vectorClass& other )\
699 {\
700 size_type sz = size();\
701\
702 if ( sz != other.size() ) return 0;\
703\
704 for( size_type i = 0; i != sz; ++i )\
705\
706 if ( !( (*this)[i] == other[i] ) ) return 0;\
707\
708 return 1;\
709\
710 }\
711\
712 inline const vectorClass& operator=( const vectorClass& other )\
713 {\
714 if (mpStart) \
715 {\
716 DestructRange( begin(), end() );\
717 delete [](char*)mpStart; \
718 }\
719\
720 size_t newLen = difference_type( other.mpEndOfBuf - other.mpStart );\
721\
722 mpStart = (iterator)( new char[newLen*sizeof(value_type)] );\
723\
724 PlacementCopy( other.begin(), other.end(), mpStart );\
725\
726 mpEnd = mpStart + other.size();\
727\
728 mpEndOfBuf = mpStart + newLen;\
729\
730 return *this;\
731 }\
732\
733 inline vectorClass( const vectorClass& other )\
734 : mpStart(0),\
735 mpEnd(0),\
736 mpEndOfBuf(0)\
737 {\
738 this->operator=( other );\
739 }\
740\
741 inline ~vectorClass() \
742 { \
743 if (mpStart) \
744 {\
745 DestructRange( begin(), end() );\
746 delete [](char*)mpStart; \
747 }\
748 }\
749\
750 inline iterator begin() { return mpStart; }\
751\
752 inline const_iterator begin() const { return mpStart; }\
753\
754 inline iterator end() { return mpEnd; }\
755\
756 inline const_iterator end() const { return mpEnd; }\
757\
758 inline size_type size() const { return (size_type)difference_type(mpEnd-mpStart); }\
759\
760 inline size_type max_size() const { return UINT_MAX/sizeof(value_type); }\
761\
762 inline size_type capacity() const \
763 { return difference_type(mpEndOfBuf-mpStart)/sizeof(value_type); }\
764\
765 inline int empty() const { return mpStart == mpEnd; }\
766\
767 inline reference operator[](size_type n) { return *(mpStart+n); }\
768\
769 inline const_reference operator[](size_type n) const { return *(mpStart+n); }\
770\
771 inline reference front() { return (*mpStart); }\
772 \
773 inline const_reference front() const { return (*mpStart); }\
774\
775 inline reference back() { return (*(mpEnd-1)); }\
776\
777 inline const_reference back() const { return (*(mpEnd-1)); }\
778\
779 inline void reserve(size_type n) {}\
780\
781 inline void push_back(const value_type& x)\
782 {\
783 if ( mpEnd != mpEndOfBuf ) \
784 {\
785 new (mpEnd) value_type(x);\
786 ++mpEnd;\
787 }\
788 else\
789 DoInsert( mpEnd, x );\
790 }\
791\
792 inline iterator insert(iterator position, const value_type& x = value_type())\
793 {\
794 if ( position == mpEnd && mpEnd != mpEndOfBuf )\
795 {\
796 new (mpEnd) value_type(x);\
797 ++mpEnd;\
798 return (mpEnd-1);\
799 }\
800 else return DoInsert( position, x );\
801 }\
802\
803 inline void pop_back()\
804 {\
805 DestructRange( mpEnd-1, mpEnd );\
806\
807 --mpEnd;\
808 }\
809\
810 inline void erase(iterator first, iterator last)\
811 {\
812 if ( last == mpEnd )\
813 {\
814 DestructRange( first, last );\
815 mpEnd = first;\
816 return;\
817 }\
818 \
819 CopyObjects( last, last + difference_type( mpEnd - last ), first );\
820 \
821 iterator newEnd = mpEnd - difference_type( last - first );\
822 DestructRange( newEnd, mpEnd );\
823 \
824 mpEnd = newEnd;\
825 }\
826\
827 inline void erase( iterator position )\
828 {\
829 erase( position, position + 1 );\
830 }\
831\
832 inline void sort()\
833 {\
834 if ( size() < 2 ) return;\
835 quick_sort( 0, size()-1 );\
836 }\
837}
838
839
840
841// redefine below symbol to change the default allocation unit of vector content buffer
842#define WXSTL_VECTOR_MIN_BUF_SIZE 64
843
844// defines vector class, where objects are copied
845// using "deep-copy" sematics (i.e. by calling their copy constructors)
846
847#define WXSTL_VECTOR(ELEMENT_CLASS) \
848__DEFINE_STL_VECTOR_DEEP(_WXSTL_VECTOR_##ELEMENT_CLASS, ELEMENT_CLASS)
849
850// defines vector class, where objects are copied
851// using "shallow-copy" sematics (i.e. instead of calling
852// their constructors, memcpy() and memmove() are used to copy their raw data)
853
854
855#define WXSTL_VECTOR_SHALLOW_COPY(ELEMENT_CLASS) __DEFINE_STL_VECTOR_SHALLOW(_WXSTL_VECTORSC_##ELEMENT_CLASS, ELEMENT_CLASS)
856
857#endif