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1 | /////////////////////////////////////////////////////////////////////////////// | |
2 | // Name: dynarray.cpp | |
3 | // Purpose: implementation of wxBaseArray class | |
4 | // Author: Vadim Zeitlin | |
5 | // Modified by: | |
6 | // Created: 12.09.97 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr> | |
9 | // Licence: wxWindows licence | |
10 | /////////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // ============================================================================ | |
13 | // headers | |
14 | // ============================================================================ | |
15 | ||
16 | #include "wx/wxprec.h" | |
17 | ||
18 | #ifdef __BORLANDC__ | |
19 | #pragma hdrstop | |
20 | #endif | |
21 | ||
22 | #include "wx/dynarray.h" | |
23 | #include "wx/intl.h" | |
24 | ||
25 | #include <stdlib.h> | |
26 | #include <string.h> // for memmove | |
27 | ||
28 | // we cast the value to long from which we cast it to void * in IndexForInsert: | |
29 | // this can't work if the pointers are not big enough | |
30 | wxCOMPILE_TIME_ASSERT( sizeof(wxUIntPtr) <= sizeof(void *), | |
31 | wxArraySizeOfPtrLessSizeOfLong ); // < 32 symbols | |
32 | ||
33 | // ============================================================================ | |
34 | // constants | |
35 | // ============================================================================ | |
36 | ||
37 | // size increment = max(50% of current size, ARRAY_MAXSIZE_INCREMENT) | |
38 | #define ARRAY_MAXSIZE_INCREMENT 4096 | |
39 | ||
40 | // ============================================================================ | |
41 | // implementation | |
42 | // ============================================================================ | |
43 | ||
44 | // ---------------------------------------------------------------------------- | |
45 | // wxBaseArray - dynamic array of 'T's | |
46 | // ---------------------------------------------------------------------------- | |
47 | ||
48 | #define _WX_DEFINE_BASEARRAY_COMMON(T, name) \ | |
49 | /* searches the array for an item (forward or backwards) */ \ | |
50 | int name::Index(T lItem, bool bFromEnd) const \ | |
51 | { \ | |
52 | if ( bFromEnd ) { \ | |
53 | if ( size() > 0 ) { \ | |
54 | size_t n = size(); \ | |
55 | do { \ | |
56 | if ( (*this)[--n] == lItem ) \ | |
57 | return n; \ | |
58 | } \ | |
59 | while ( n != 0 ); \ | |
60 | } \ | |
61 | } \ | |
62 | else { \ | |
63 | for( size_t n = 0; n < size(); n++ ) { \ | |
64 | if( (*this)[n] == lItem ) \ | |
65 | return n; \ | |
66 | } \ | |
67 | } \ | |
68 | \ | |
69 | return wxNOT_FOUND; \ | |
70 | } \ | |
71 | \ | |
72 | /* add item assuming the array is sorted with fnCompare function */ \ | |
73 | size_t name::Add(T lItem, CMPFUNC fnCompare) \ | |
74 | { \ | |
75 | size_t idx = IndexForInsert(lItem, fnCompare); \ | |
76 | Insert(lItem, idx); \ | |
77 | return idx; \ | |
78 | } | |
79 | ||
80 | #if wxUSE_STL | |
81 | ||
82 | #define _WX_DEFINE_BASEARRAY_NOCOMMON(T, name) \ | |
83 | size_t name::IndexForInsert(T lItem, CMPFUNC fnCompare) const \ | |
84 | { \ | |
85 | Predicate p((SCMPFUNC)fnCompare); \ | |
86 | const_iterator it = std::lower_bound(begin(), end(), lItem, p); \ | |
87 | return it - begin(); \ | |
88 | } \ | |
89 | \ | |
90 | int name::Index(T lItem, CMPFUNC fnCompare) const \ | |
91 | { \ | |
92 | Predicate p((SCMPFUNC)fnCompare); \ | |
93 | const_iterator it = std::lower_bound(begin(), end(), lItem, p); \ | |
94 | return (it != end() && !p(lItem, *it)) ? \ | |
95 | (int)(it - begin()) : wxNOT_FOUND; \ | |
96 | } \ | |
97 | \ | |
98 | void name::Shrink() \ | |
99 | { \ | |
100 | name tmp(*this); \ | |
101 | swap(tmp); \ | |
102 | } | |
103 | ||
104 | #else // if !wxUSE_STL | |
105 | ||
106 | #define _WX_DEFINE_BASEARRAY_NOCOMMON(T, name) \ | |
107 | /* ctor */ \ | |
108 | name::name() \ | |
109 | { \ | |
110 | m_nSize = \ | |
111 | m_nCount = 0; \ | |
112 | m_pItems = (T *)NULL; \ | |
113 | } \ | |
114 | \ | |
115 | /* copy ctor */ \ | |
116 | name::name(const name& src) \ | |
117 | { \ | |
118 | m_nSize = /* not src.m_nSize to save memory */ \ | |
119 | m_nCount = src.m_nCount; \ | |
120 | \ | |
121 | if ( m_nSize != 0 ) { \ | |
122 | m_pItems = new T[m_nSize]; \ | |
123 | /* only copy if allocation succeeded */ \ | |
124 | if ( m_pItems ) { \ | |
125 | memcpy(m_pItems, src.m_pItems, m_nCount*sizeof(T)); \ | |
126 | } \ | |
127 | else { \ | |
128 | m_nSize = 0; \ | |
129 | } \ | |
130 | } \ | |
131 | else \ | |
132 | m_pItems = (T *) NULL; \ | |
133 | } \ | |
134 | \ | |
135 | /* assignment operator */ \ | |
136 | name& name::operator=(const name& src) \ | |
137 | { \ | |
138 | wxDELETEA(m_pItems); \ | |
139 | \ | |
140 | m_nSize = /* not src.m_nSize to save memory */ \ | |
141 | m_nCount = src.m_nCount; \ | |
142 | \ | |
143 | if ( m_nSize != 0 ){ \ | |
144 | m_pItems = new T[m_nSize]; \ | |
145 | /* only copy if allocation succeeded */ \ | |
146 | if ( m_pItems ) { \ | |
147 | memcpy(m_pItems, src.m_pItems, m_nCount*sizeof(T)); \ | |
148 | } \ | |
149 | else { \ | |
150 | m_nSize = 0; \ | |
151 | } \ | |
152 | } \ | |
153 | else \ | |
154 | m_pItems = (T *) NULL; \ | |
155 | \ | |
156 | return *this; \ | |
157 | } \ | |
158 | \ | |
159 | /* allocate new buffer of the given size and move our data to it */ \ | |
160 | bool name::Realloc(size_t nSize) \ | |
161 | { \ | |
162 | T *pNew = new T[nSize]; \ | |
163 | /* only grow if allocation succeeded */ \ | |
164 | if ( !pNew ) \ | |
165 | return false; \ | |
166 | \ | |
167 | m_nSize = nSize; \ | |
168 | /* copy data to new location */ \ | |
169 | memcpy(pNew, m_pItems, m_nCount*sizeof(T)); \ | |
170 | delete [] m_pItems; \ | |
171 | m_pItems = pNew; \ | |
172 | \ | |
173 | return true; \ | |
174 | } \ | |
175 | \ | |
176 | /* grow the array */ \ | |
177 | void name::Grow(size_t nIncrement) \ | |
178 | { \ | |
179 | /* only do it if no more place */ \ | |
180 | if( (m_nCount == m_nSize) || ((m_nSize - m_nCount) < nIncrement) ) { \ | |
181 | if( m_nSize == 0 ) { \ | |
182 | /* was empty, determine initial size */ \ | |
183 | size_t size = WX_ARRAY_DEFAULT_INITIAL_SIZE; \ | |
184 | if (size < nIncrement) size = nIncrement; \ | |
185 | /* allocate some memory */ \ | |
186 | m_pItems = new T[size]; \ | |
187 | /* only grow if allocation succeeded */ \ | |
188 | if ( m_pItems ) { \ | |
189 | m_nSize = size; \ | |
190 | } \ | |
191 | } \ | |
192 | else \ | |
193 | { \ | |
194 | /* add at least 50% but not too much */ \ | |
195 | size_t ndefIncrement = m_nSize < WX_ARRAY_DEFAULT_INITIAL_SIZE \ | |
196 | ? WX_ARRAY_DEFAULT_INITIAL_SIZE : m_nSize >> 1; \ | |
197 | if ( ndefIncrement > ARRAY_MAXSIZE_INCREMENT ) \ | |
198 | ndefIncrement = ARRAY_MAXSIZE_INCREMENT; \ | |
199 | if ( nIncrement < ndefIncrement ) \ | |
200 | nIncrement = ndefIncrement; \ | |
201 | Realloc(m_nSize + nIncrement); \ | |
202 | } \ | |
203 | } \ | |
204 | } \ | |
205 | \ | |
206 | /* make sure that the array has at least count elements */ \ | |
207 | void name::SetCount(size_t count, T defval) \ | |
208 | { \ | |
209 | if ( m_nSize < count ) \ | |
210 | { \ | |
211 | /* need to realloc memory: don't overallocate it here as if */ \ | |
212 | /* SetCount() is called, it probably means that the caller */ \ | |
213 | /* knows in advance how many elements there will be in the */ \ | |
214 | /* array and so it won't be necessary to realloc it later */ \ | |
215 | if ( !Realloc(count) ) \ | |
216 | { \ | |
217 | /* out of memory -- what can we do? */ \ | |
218 | return; \ | |
219 | } \ | |
220 | } \ | |
221 | \ | |
222 | /* add new elements if we extend the array */ \ | |
223 | while ( m_nCount < count ) \ | |
224 | { \ | |
225 | m_pItems[m_nCount++] = defval; \ | |
226 | } \ | |
227 | } \ | |
228 | \ | |
229 | /* dtor */ \ | |
230 | name::~name() \ | |
231 | { \ | |
232 | wxDELETEA(m_pItems); \ | |
233 | } \ | |
234 | \ | |
235 | /* clears the list */ \ | |
236 | void name::Clear() \ | |
237 | { \ | |
238 | m_nSize = \ | |
239 | m_nCount = 0; \ | |
240 | \ | |
241 | wxDELETEA(m_pItems); \ | |
242 | } \ | |
243 | \ | |
244 | /* pre-allocates memory (frees the previous data!) */ \ | |
245 | void name::Alloc(size_t nSize) \ | |
246 | { \ | |
247 | /* only if old buffer was not big enough */ \ | |
248 | if ( nSize > m_nSize ) { \ | |
249 | wxDELETEA(m_pItems); \ | |
250 | m_nSize = 0; \ | |
251 | m_pItems = new T[nSize]; \ | |
252 | /* only alloc if allocation succeeded */ \ | |
253 | if ( m_pItems ) { \ | |
254 | m_nSize = nSize; \ | |
255 | } \ | |
256 | } \ | |
257 | \ | |
258 | m_nCount = 0; \ | |
259 | } \ | |
260 | \ | |
261 | /* minimizes the memory usage by freeing unused memory */ \ | |
262 | void name::Shrink() \ | |
263 | { \ | |
264 | /* only do it if we have some memory to free */ \ | |
265 | if( m_nCount < m_nSize ) { \ | |
266 | /* allocates exactly as much memory as we need */ \ | |
267 | T *pNew = new T[m_nCount]; \ | |
268 | /* only shrink if allocation succeeded */ \ | |
269 | if ( pNew ) { \ | |
270 | /* copy data to new location */ \ | |
271 | memcpy(pNew, m_pItems, m_nCount*sizeof(T)); \ | |
272 | delete [] m_pItems; \ | |
273 | m_pItems = pNew; \ | |
274 | \ | |
275 | /* update the size of the new block */ \ | |
276 | m_nSize = m_nCount; \ | |
277 | } \ | |
278 | /* else: don't do anything, better keep old memory block! */ \ | |
279 | } \ | |
280 | } \ | |
281 | \ | |
282 | /* add item at the end */ \ | |
283 | void name::Add(T lItem, size_t nInsert) \ | |
284 | { \ | |
285 | if (nInsert == 0) \ | |
286 | return; \ | |
287 | Grow(nInsert); \ | |
288 | for (size_t i = 0; i < nInsert; i++) \ | |
289 | m_pItems[m_nCount++] = lItem; \ | |
290 | } \ | |
291 | \ | |
292 | /* add item at the given position */ \ | |
293 | void name::Insert(T lItem, size_t nIndex, size_t nInsert) \ | |
294 | { \ | |
295 | wxCHECK_RET( nIndex <= m_nCount, wxT("bad index in wxArray::Insert") ); \ | |
296 | wxCHECK_RET( m_nCount <= m_nCount + nInsert, \ | |
297 | wxT("array size overflow in wxArray::Insert") ); \ | |
298 | \ | |
299 | if (nInsert == 0) \ | |
300 | return; \ | |
301 | Grow(nInsert); \ | |
302 | \ | |
303 | memmove(&m_pItems[nIndex + nInsert], &m_pItems[nIndex], \ | |
304 | (m_nCount - nIndex)*sizeof(T)); \ | |
305 | for (size_t i = 0; i < nInsert; i++) \ | |
306 | m_pItems[nIndex + i] = lItem; \ | |
307 | m_nCount += nInsert; \ | |
308 | } \ | |
309 | \ | |
310 | /* search for a place to insert item into sorted array (binary search) */ \ | |
311 | size_t name::IndexForInsert(T lItem, CMPFUNC fnCompare) const \ | |
312 | { \ | |
313 | size_t i, \ | |
314 | lo = 0, \ | |
315 | hi = m_nCount; \ | |
316 | int res; \ | |
317 | \ | |
318 | while ( lo < hi ) { \ | |
319 | i = (lo + hi)/2; \ | |
320 | \ | |
321 | res = (*fnCompare)((const void *)(wxUIntPtr)lItem, \ | |
322 | (const void *)(wxUIntPtr)(m_pItems[i])); \ | |
323 | if ( res < 0 ) \ | |
324 | hi = i; \ | |
325 | else if ( res > 0 ) \ | |
326 | lo = i + 1; \ | |
327 | else { \ | |
328 | lo = i; \ | |
329 | break; \ | |
330 | } \ | |
331 | } \ | |
332 | \ | |
333 | return lo; \ | |
334 | } \ | |
335 | \ | |
336 | /* search for an item in a sorted array (binary search) */ \ | |
337 | int name::Index(T lItem, CMPFUNC fnCompare) const \ | |
338 | { \ | |
339 | size_t n = IndexForInsert(lItem, fnCompare); \ | |
340 | \ | |
341 | return (n >= m_nCount || \ | |
342 | (*fnCompare)((const void *)(wxUIntPtr)lItem, \ | |
343 | ((const void *)(wxUIntPtr)m_pItems[n]))) \ | |
344 | ? wxNOT_FOUND \ | |
345 | : (int)n; \ | |
346 | } \ | |
347 | \ | |
348 | /* removes item from array (by index) */ \ | |
349 | void name::RemoveAt(size_t nIndex, size_t nRemove) \ | |
350 | { \ | |
351 | wxCHECK_RET( nIndex < m_nCount, wxT("bad index in wxArray::RemoveAt") ); \ | |
352 | wxCHECK_RET( nIndex + nRemove <= m_nCount, \ | |
353 | wxT("removing too many elements in wxArray::RemoveAt") ); \ | |
354 | \ | |
355 | memmove(&m_pItems[nIndex], &m_pItems[nIndex + nRemove], \ | |
356 | (m_nCount - nIndex - nRemove)*sizeof(T)); \ | |
357 | m_nCount -= nRemove; \ | |
358 | } \ | |
359 | \ | |
360 | /* removes item from array (by value) */ \ | |
361 | void name::Remove(T lItem) \ | |
362 | { \ | |
363 | int iIndex = Index(lItem); \ | |
364 | \ | |
365 | wxCHECK_RET( iIndex != wxNOT_FOUND, \ | |
366 | wxT("removing inexistent item in wxArray::Remove") ); \ | |
367 | \ | |
368 | RemoveAt((size_t)iIndex); \ | |
369 | } \ | |
370 | \ | |
371 | /* sort array elements using passed comparaison function */ \ | |
372 | void name::Sort(CMPFUNC fCmp) \ | |
373 | { \ | |
374 | qsort(m_pItems, m_nCount, sizeof(T), fCmp); \ | |
375 | } \ | |
376 | \ | |
377 | void name::assign(const_iterator first, const_iterator last) \ | |
378 | { \ | |
379 | clear(); \ | |
380 | reserve(last - first); \ | |
381 | for(; first != last; ++first) \ | |
382 | push_back(*first); \ | |
383 | } \ | |
384 | \ | |
385 | void name::assign(size_type n, const_reference v) \ | |
386 | { \ | |
387 | clear(); \ | |
388 | reserve(n); \ | |
389 | for( size_type i = 0; i < n; ++i ) \ | |
390 | push_back(v); \ | |
391 | } \ | |
392 | \ | |
393 | void name::insert(iterator it, const_iterator first, const_iterator last) \ | |
394 | { \ | |
395 | size_t nInsert = last - first, nIndex = it - begin(); \ | |
396 | if (nInsert == 0) \ | |
397 | return; \ | |
398 | Grow(nInsert); \ | |
399 | \ | |
400 | memmove(&m_pItems[nIndex + nInsert], &m_pItems[nIndex], \ | |
401 | (m_nCount - nIndex)*sizeof(T)); \ | |
402 | for (size_t i = 0; i < nInsert; ++i, ++it, ++first) \ | |
403 | *it = *first; \ | |
404 | m_nCount += nInsert; \ | |
405 | } | |
406 | ||
407 | #endif | |
408 | ||
409 | #define _WX_DEFINE_BASEARRAY(T, name) \ | |
410 | _WX_DEFINE_BASEARRAY_COMMON(T, name) \ | |
411 | _WX_DEFINE_BASEARRAY_NOCOMMON(T, name) | |
412 | ||
413 | #ifdef __INTELC__ | |
414 | #pragma warning(push) | |
415 | #pragma warning(disable: 1684) | |
416 | #pragma warning(disable: 1572) | |
417 | #endif | |
418 | ||
419 | _WX_DEFINE_BASEARRAY(const void *, wxBaseArrayPtrVoid) | |
420 | _WX_DEFINE_BASEARRAY(short, wxBaseArrayShort) | |
421 | _WX_DEFINE_BASEARRAY(int, wxBaseArrayInt) | |
422 | _WX_DEFINE_BASEARRAY(long, wxBaseArrayLong) | |
423 | _WX_DEFINE_BASEARRAY(size_t, wxBaseArraySizeT) | |
424 | _WX_DEFINE_BASEARRAY(double, wxBaseArrayDouble) | |
425 | ||
426 | #ifdef __INTELC__ | |
427 | #pragma warning(pop) | |
428 | #endif | |
429 | ||
430 | #if wxUSE_STL | |
431 | #include "wx/arrstr.h" | |
432 | ||
433 | #include "wx/beforestd.h" | |
434 | #include <functional> | |
435 | #include "wx/afterstd.h" | |
436 | ||
437 | _WX_DEFINE_BASEARRAY(wxString, wxBaseArrayStringBase); | |
438 | ||
439 | // some compilers (Sun CC being the only known example) distinguish between | |
440 | // extern "C" functions and the functions with C++ linkage and ptr_fun and | |
441 | // wxStringCompareLess can't take wxStrcmp/wxStricmp directly as arguments in | |
442 | // this case, we need the wrappers below to make this work | |
443 | inline int wxStrcmpCppWrapper(const wxChar *p, const wxChar *q) | |
444 | { | |
445 | return wxStrcmp(p, q); | |
446 | } | |
447 | ||
448 | inline int wxStricmpCppWrapper(const wxChar *p, const wxChar *q) | |
449 | { | |
450 | return wxStricmp(p, q); | |
451 | } | |
452 | ||
453 | int wxArrayString::Index(const wxChar* sz, bool bCase, bool WXUNUSED(bFromEnd)) const | |
454 | { | |
455 | wxArrayString::const_iterator it; | |
456 | ||
457 | if (bCase) | |
458 | { | |
459 | it = std::find_if(begin(), end(), | |
460 | std::not1( | |
461 | std::bind2nd( | |
462 | std::ptr_fun(wxStrcmpCppWrapper), sz))); | |
463 | } | |
464 | else // !bCase | |
465 | { | |
466 | it = std::find_if(begin(), end(), | |
467 | std::not1( | |
468 | std::bind2nd( | |
469 | std::ptr_fun(wxStricmpCppWrapper), sz))); | |
470 | } | |
471 | ||
472 | return it == end() ? wxNOT_FOUND : it - begin(); | |
473 | } | |
474 | ||
475 | template<class F> | |
476 | class wxStringCompareLess | |
477 | { | |
478 | public: | |
479 | wxStringCompareLess(F f) : m_f(f) { } | |
480 | bool operator()(const wxChar* s1, const wxChar* s2) | |
481 | { return m_f(s1, s2) < 0; } | |
482 | bool operator()(const wxString& s1, const wxString& s2) | |
483 | { return m_f(s1, s2) < 0; } | |
484 | private: | |
485 | F m_f; | |
486 | }; | |
487 | ||
488 | template<class F> | |
489 | wxStringCompareLess<F> wxStringCompare(F f) | |
490 | { | |
491 | return wxStringCompareLess<F>(f); | |
492 | } | |
493 | ||
494 | void wxArrayString::Sort(CompareFunction function) | |
495 | { | |
496 | std::sort(begin(), end(), wxStringCompare(function)); | |
497 | } | |
498 | ||
499 | void wxArrayString::Sort(bool reverseOrder) | |
500 | { | |
501 | if (reverseOrder) | |
502 | { | |
503 | std::sort(begin(), end(), std::greater<wxString>()); | |
504 | } | |
505 | else | |
506 | { | |
507 | std::sort(begin(), end()); | |
508 | } | |
509 | } | |
510 | ||
511 | int wxSortedArrayString::Index(const wxChar* sz, bool bCase, bool WXUNUSED(bFromEnd)) const | |
512 | { | |
513 | wxSortedArrayString::const_iterator it; | |
514 | wxString s(sz); | |
515 | ||
516 | if (bCase) | |
517 | it = std::lower_bound(begin(), end(), s, | |
518 | wxStringCompare(wxStrcmpCppWrapper)); | |
519 | else | |
520 | it = std::lower_bound(begin(), end(), s, | |
521 | wxStringCompare(wxStricmpCppWrapper)); | |
522 | ||
523 | if (it == end()) | |
524 | return wxNOT_FOUND; | |
525 | ||
526 | if (bCase) | |
527 | { | |
528 | if (wxStrcmp(it->c_str(), sz) != 0) | |
529 | return wxNOT_FOUND; | |
530 | } | |
531 | else | |
532 | { | |
533 | if (wxStricmp(it->c_str(), sz) != 0) | |
534 | return wxNOT_FOUND; | |
535 | } | |
536 | ||
537 | return it - begin(); | |
538 | } | |
539 | ||
540 | #endif |