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