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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 __WXSTLLST_G__
13#define __WXSTLLST_G__
14
3d05544e
JS
15#ifdef new
16#undef new
17#endif
18
cecfc5e7
VZ
19#include <stddef.h>
20#include <sys/types.h>
21#include <memory.h>
22#include <limits.h>
23#include <new.h>
24
25// VERSION:: 0.2 (copy-constructor/adign-op added)
26
27// FOR NOW:: class-member operators "new" and "delete"
28// are ignored by list class, memory allocated
29// and freed using global operators
30
31typedef int Type;
32
33
34// the below macro used internally (see actual interface after this macro)
35
36#define __DEFINE_STL_LIST(listClass,Type) class \
37 listClass \
38{\
39public:\
40\
41 typedef Type value_type;\
42 typedef value_type* pointer;\
43 typedef const value_type* const_pointer;\
44 typedef value_type& reference;\
45 typedef const value_type& const_reference;\
46 typedef size_t size_type;\
47 typedef ptrdiff_t difference_type;\
48\
49protected:\
50 struct list_node\
51 {\
52 list_node* mpNext;\
53 list_node* mpPrev;\
54 value_type mData;\
55 };\
56\
57 typedef list_node* node_ref_type;\
58\
59 node_ref_type mpFreeListHead;\
60 node_ref_type mpTerminator;\
61 size_type mSize;\
62\
63 inline node_ref_type AllocNode() \
64 { \
65 if ( mpFreeListHead ) \
66 {\
67 node_ref_type pFreeNode = mpFreeListHead;\
68 mpFreeListHead = mpFreeListHead->mpPrev;\
69\
70 return pFreeNode;\
71 }\
72 else\
73 {\
74 char* pHeapBlock = new char[sizeof(list_node)];\
75\
76 return (node_ref_type)pHeapBlock;\
77 }\
78 }\
79\
80 inline void DestroyFreeList()\
81 {\
82 while ( mpFreeListHead )\
83 {\
84 node_ref_type tmp = mpFreeListHead;\
85 mpFreeListHead = mpFreeListHead->mpPrev;\
86\
87 delete [](char*)tmp;\
88 }\
89 }\
90\
91 inline void RecycleNode( node_ref_type pNode ) \
92 {\
93 pNode->mpPrev = mpFreeListHead;\
94 mpFreeListHead = pNode;\
95 }\
96\
97public:\
98\
99 class iterator \
100 {\
101 public:\
102 node_ref_type mpNode;\
103 friend class listClass;\
104 friend class const_iterator;\
105 friend class const_reverse_iterator;\
106\
107 protected:\
108 iterator( node_ref_type pNode )\
109 {\
110 mpNode = pNode;\
111 }\
112 \
113 public:\
114 iterator() {}\
115 int operator==( const iterator& rhs ) const { return (mpNode == rhs.mpNode); }\
116 int operator!=( const iterator& rhs ) const { return (mpNode != rhs.mpNode); }\
117\
118 inline iterator( const iterator& other )\
119 {\
120 mpNode = other.mpNode;\
121 }\
122\
123 inline const iterator& operator--() \
124 {\
125 mpNode = mpNode->mpPrev;\
126 return *this;\
127 }\
128\
129 inline iterator operator--(int)\
130 {\
131 iterator tmp = *this;\
132 mpNode = mpNode->mpPrev;\
133 return tmp;\
134 }\
135\
136 inline const iterator& operator++() \
137 {\
138 mpNode = mpNode->mpNext;\
139 return *this;\
140 }\
141\
142 inline iterator operator++(int)\
143 {\
144 iterator tmp = *this;\
145 mpNode = mpNode->mpNext;\
146 return tmp;\
147 }\
148\
149 inline reference operator*() const { return mpNode->mData; }\
150 };\
151\
152\
153 class const_iterator \
154 {\
155 protected:\
156 node_ref_type mpNode;\
157 friend class listClass;\
158\
159 protected:\
160 const_iterator( node_ref_type pNode )\
161 {\
162 mpNode = pNode;\
163 }\
164 \
165 public:\
166 \
167 const_iterator() {}\
168 int operator==( const const_iterator& rhs ) const { return (mpNode == rhs.mpNode); }\
169 int operator!=( const const_iterator& rhs ) const { return (mpNode != rhs.mpNode); }\
170\
171\
172 inline const_iterator( const iterator& other )\
173 {\
174 mpNode = other.mpNode;\
175 }\
176\
177 inline const const_iterator& operator--() \
178 {\
179 mpNode = mpNode->mpPrev;\
180 return *this;\
181 }\
182\
183 inline const_iterator operator--(int)\
184 {\
185 const_iterator tmp = *this;\
186 mpNode = mpNode->mpPrev;\
187 return tmp;\
188 }\
189\
190 inline const const_iterator& operator++() \
191 {\
192 mpNode = mpNode->mpNext;\
193 return *this;\
194 }\
195\
196 inline const_iterator operator++(int)\
197 {\
198 const_iterator tmp = *this;\
199 mpNode = mpNode->mpNext;\
200 return tmp;\
201 }\
202\
203 inline const_reference operator*() const { return mpNode->mData; }\
204 };\
205\
206 typedef iterator OutputIterator;\
207 typedef const_iterator InputIterator;\
208\
209 class reverse_iterator \
210 {\
211 public:\
212 node_ref_type mpNode;\
213 friend class listClass;\
214 friend class const_reverse_iterator;\
215\
216 protected:\
217 reverse_iterator ( node_ref_type pNode )\
218 {\
219 mpNode = pNode;\
220 }\
221 \
222 public:\
223\
224 reverse_iterator() {}\
225 int operator==( const reverse_iterator& rhs ) const { return (mpNode == rhs.mpNode); }\
226 int operator!=( const reverse_iterator& rhs ) const { return (mpNode != rhs.mpNode); }\
227\
228 inline reverse_iterator( const reverse_iterator& other )\
229 {\
230 mpNode = other.mpNode;\
231 }\
232\
233 inline const reverse_iterator& operator--() \
234 {\
235 mpNode = mpNode->mpNext;\
236 return *this;\
237 }\
238\
239 inline reverse_iterator operator--(int)\
240 {\
241 reverse_iterator tmp = *this;\
242 mpNode = mpNode->mpPrev;\
243 return tmp;\
244 }\
245\
246 inline const reverse_iterator & operator++() \
247 {\
248 mpNode = mpNode->mpNext;\
249 return *this;\
250 }\
251\
252 inline reverse_iterator operator++(int)\
253 {\
254 reverse_iterator tmp = *this;\
255 mpNode = mpNode->mpPrev;\
256 return tmp;\
257 }\
258\
259 inline const_reference operator*() const { return mpNode->mData; }\
260 };\
261\
262\
263 class const_reverse_iterator \
264 {\
265 protected:\
266 node_ref_type mpNode;\
267 friend class listClass;\
268\
269 protected:\
270 const_reverse_iterator( node_ref_type pNode )\
271 {\
272 mpNode = pNode;\
273 }\
274 \
275 public:\
276\
277 const_reverse_iterator() {}\
278 int operator==( const const_reverse_iterator& rhs ) const { return (mpNode == rhs.mpNode); }\
279 int operator!=( const const_reverse_iterator& rhs ) const { return (mpNode != rhs.mpNode); }\
280\
281 inline const_reverse_iterator( const reverse_iterator& other )\
282 {\
283 mpNode = other.mpNode;\
284 }\
285\
286 inline const const_reverse_iterator& operator--() \
287 {\
288 mpNode = mpNode->mpNext;\
289 return *this;\
290 }\
291\
292 inline const_reverse_iterator operator--(int)\
293 {\
294 const_reverse_iterator tmp = *this;\
295 mpNode = mpNode->mpNext;\
296 return tmp;\
297 }\
298\
299 inline const const_reverse_iterator& operator++() \
300 {\
301 mpNode = mpNode->mpPrev;\
302 return *this;\
303 }\
304\
305 inline const_reverse_iterator operator++(int)\
306 {\
307 const_reverse_iterator tmp = *this;\
308 mpNode = mpNode->mpPrev;\
309 return tmp;\
310 }\
311\
312 inline const_reference operator*() const { return mpNode->mData; }\
313 };\
314\
315public:\
316\
317 inline listClass()\
318 : mpFreeListHead( 0 ),\
319 mSize(0)\
320 {\
321 mpTerminator = AllocNode();\
322 mpTerminator->mpPrev = mpTerminator->mpNext = mpTerminator;\
323 }\
324\
325 listClass( const listClass& other )\
326 {\
327 mpTerminator = AllocNode();\
328 mpTerminator->mpPrev = mpTerminator->mpNext = mpTerminator;\
329\
330 for( listClass::const_iterator i = other.begin(); i != other.end(); ++i )\
331\
332 push_back( (*i) );\
333 }\
334\
335 inline const listClass& operator=( const listClass& rhs ) \
336 {\
337 erase( begin(), end() );\
338\
339 for( listClass::const_iterator i = rhs.begin(); i != rhs.end(); ++i )\
340\
341 push_back( (*i) );\
342\
343 return *this;\
344 }\
345\
346 inline listClass(const_iterator first, const_iterator last)\
347 : mpFreeListHead( 0 ),\
348 mSize(0)\
349 \
350 { while( first != last ) push_back( *first++ ); }\
351\
352 inline listClass( size_type n, const value_type& value = value_type() )\
353 \
354 { for( size_t i = 0; i != n; ++n ) push_back( value ); }\
355\
356 inline ~listClass() \
357 { \
358 erase( begin(), end() ); \
359\
360 RecycleNode( mpTerminator );\
361 DestroyFreeList();\
362 }\
363\
364 inline iterator begin() { return iterator(mpTerminator->mpNext); }\
365 \
366 inline const_iterator begin() const \
367 { return const_iterator(mpTerminator->mpNext); }\
368 \
369 inline iterator end() { return iterator(mpTerminator); }\
370\
371 inline const_iterator end() const { return const_iterator(mpTerminator); }\
372\
373 inline reverse_iterator rbegin() \
374 { return reverse_iterator(mpTerminator->mpPrev); }\
375\
376 inline reverse_iterator rend() \
377 { return reverse_iterator(mpTerminator); }\
378\
379 inline const_reverse_iterator rbegin() const\
380 { return const_reverse_iterator(mpTerminator->mpPrev); }\
381\
382 inline const_reverse_iterator rend() const\
383 { return const_reverse_iterator(mpTerminator); }\
384\
385 inline int empty() const { return (mSize == 0); }\
386\
387 inline size_type size() const { return mSize; }\
388\
389 inline size_type max_size() const { return UINT_MAX/sizeof(list_node); }\
390\
391 inline reference front() { return mpTerminator->mData; }\
392\
393 inline const_reference front() const { return mpTerminator->mData; }\
394\
395 inline reference back() { return mpTerminator->mpPrev->mData; }\
396\
397 inline const_reference back() const { return mpTerminator->mpPrev->mData; }\
398\
399 inline void push_front(const value_type& x) { insert( begin(), x ); }\
400\
401 inline void push_back(const value_type& x) { insert( end(), x ); }\
402\
403 iterator insert(iterator position, const value_type& x = value_type())\
404 {\
405 node_ref_type pNew = AllocNode();\
406\
407 node_ref_type pos = *((node_ref_type*)&position);\
408\
409 pNew->mpNext = pos;\
410 pNew->mpPrev = pos->mpPrev;\
411 pos->mpPrev->mpNext = pNew;\
412 pos->mpPrev = pNew;\
413\
414 new (&pNew->mData) value_type(x);\
415\
416 ++mSize;\
417\
418 return iterator(pNew);\
419 }\
420\
421 inline void insert(iterator position, const_iterator first, const_iterator last )\
422 {\
423 while( first != last ) insert( position, *first++ );\
424 }\
425\
426 inline void splice( iterator position, listClass& other )\
427 {\
428 if ( other.begin() == other.end() ) return;\
429\
430 node_ref_type pTill = other.mpTerminator->mpPrev;\
431 node_ref_type pFrom = other.begin().mpNode;\
432\
433 mpTerminator->mpPrev->mpNext = pFrom;\
434 pFrom->mpPrev = mpTerminator->mpPrev->mpNext;\
435\
436 pTill->mpNext = mpTerminator;\
437 mpTerminator->mpPrev = pTill;\
438\
439 other.mpTerminator->mpNext = \
440 other.mpTerminator->mpPrev = other.mpTerminator;\
441\
442 mSize += other.mSize;\
443 other.mSize = 0;\
444 }\
445\
446 inline void splice( iterator position, listClass& other, iterator first, iterator last )\
447 {\
448 if ( first == last ) return;\
449\
450 size_type sz = 0;\
451 iterator tmp = first;\
452 while( tmp != last ) \
453 {\
454 ++tmp;\
455 ++sz;\
456 }\
457\
458 mSize += sz;\
459 other.mSize -= sz;\
460\
461 node_ref_type pPos = position.mpNode;\
462 node_ref_type pFirst = first.mpNode;\
463 node_ref_type pLast = last.mpNode;\
464 node_ref_type pTill = last.mpNode->mpPrev;\
465\
466 pPos->mpPrev->mpNext = pFirst;\
467 pPos->mpPrev = pTill;\
468\
469 pFirst->mpPrev->mpNext = last.mpNode;\
470 pLast->mpPrev = pTill;\
471\
472 pFirst->mpPrev = pPos->mpPrev;\
473 pTill->mpNext = pPos;\
474 }\
475\
476 inline void pop_front() { erase( begin() ); }\
477 inline void pop_back() { erase( --end() ); }\
478 \
479 inline void erase(iterator position)\
480 {\
481 erase( position, ++position );\
482 }\
483 \
484 inline void erase(iterator first, iterator last)\
485 {\
486 node_ref_type firstNode = *((node_ref_type*)&first);\
487 node_ref_type lastNode = *((node_ref_type*)&last);\
488\
489 firstNode->mpPrev->mpNext = lastNode;\
490 lastNode->mpPrev = firstNode->mpPrev;\
491\
492 while( firstNode != lastNode )\
493 {\
494 node_ref_type next = firstNode->mpNext;\
495\
496 typedef value_type value_type_local;\
497 firstNode->mData.value_type_local::~value_type_local();\
498\
499 RecycleNode( firstNode );\
500\
501 firstNode = next;\
502\
503 --mSize;\
504 }\
505 }\
506\
507 inline void remove(const value_type& value)\
508 {\
509 for( iterator i = begin(); i != end(); ++i )\
510 \
511 if ( (*i) == value ) \
512 {\
513 erase( i ); break;\
514 }\
515 }\
516\
517 void sort()\
518 {\
519 if ( mSize < 2 ) return;\
520\
521 iterator from = begin();\
522 iterator other_end = end();\
523 --other_end;\
524\
525 for( size_type i = 0; i != mSize; ++i )\
526 {\
527 size_type nSwaps = 0;\
528\
529 iterator next = begin();\
530 ++next;\
531\
532 for( iterator j = begin(); j != other_end; ++j )\
533 {\
534\
535 if ( (*next) < (*j) )\
536 {\
537 value_type tmp = (*j);\
538 (*j) = (*next);\
539 (*next) = tmp;\
540\
541 ++nSwaps;\
542 }\
543\
544 ++next;\
545 }\
546\
547 if ( !nSwaps) break;\
548\
549 --other_end;\
550 }\
551 }\
552}
553
554// defines list class with the given element type
555#define WXSTL_LIST(ELEMENT_CLASS) __DEFINE_STL_LIST(\
556\
557_WXSTL_LIST_##ELEMENT_CLASS, ELEMENT_CLASS )
558
559#endif