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