| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: wx/hash.h |
| 3 | // Purpose: wxHashTable class |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: VZ at 25.02.00: type safe hashes with WX_DECLARE_HASH() |
| 6 | // Created: 01/02/97 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Julian Smart |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifndef _WX_HASH_H__ |
| 13 | #define _WX_HASH_H__ |
| 14 | |
| 15 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
| 16 | #pragma interface "hash.h" |
| 17 | #endif |
| 18 | |
| 19 | #include "wx/defs.h" |
| 20 | |
| 21 | #if !wxUSE_STL && WXWIN_COMPATIBILITY_2_4 |
| 22 | #define wxUSE_OLD_HASH_TABLE 1 |
| 23 | #else |
| 24 | #define wxUSE_OLD_HASH_TABLE 0 |
| 25 | #endif |
| 26 | |
| 27 | #if !wxUSE_STL |
| 28 | #include "wx/object.h" |
| 29 | #else |
| 30 | class WXDLLIMPEXP_BASE wxObject; |
| 31 | #endif |
| 32 | #if wxUSE_OLD_HASH_TABLE |
| 33 | #include "wx/list.h" |
| 34 | #endif |
| 35 | #if WXWIN_COMPATIBILITY_2_4 |
| 36 | #include "wx/dynarray.h" |
| 37 | #endif |
| 38 | |
| 39 | // the default size of the hash |
| 40 | #define wxHASH_SIZE_DEFAULT (1000) |
| 41 | |
| 42 | /* |
| 43 | * A hash table is an array of user-definable size with lists |
| 44 | * of data items hanging off the array positions. Usually there'll |
| 45 | * be a hit, so no search is required; otherwise we'll have to run down |
| 46 | * the list to find the desired item. |
| 47 | */ |
| 48 | |
| 49 | // ---------------------------------------------------------------------------- |
| 50 | // this is the base class for object hashes: hash tables which contain |
| 51 | // pointers to objects |
| 52 | // ---------------------------------------------------------------------------- |
| 53 | |
| 54 | #if wxUSE_OLD_HASH_TABLE |
| 55 | |
| 56 | class WXDLLIMPEXP_BASE wxHashTableBase : public wxObject |
| 57 | { |
| 58 | public: |
| 59 | wxHashTableBase(); |
| 60 | |
| 61 | void Create(wxKeyType keyType = wxKEY_INTEGER, |
| 62 | size_t size = wxHASH_SIZE_DEFAULT); |
| 63 | void Destroy(); |
| 64 | |
| 65 | size_t GetSize() const { return m_hashSize; } |
| 66 | size_t GetCount() const { return m_count; } |
| 67 | |
| 68 | void DeleteContents(bool flag); |
| 69 | |
| 70 | protected: |
| 71 | // find the node for (key, value) |
| 72 | wxNodeBase *GetNode(long key, long value) const; |
| 73 | |
| 74 | // the array of lists in which we store the values for given key hash |
| 75 | wxListBase **m_hashTable; |
| 76 | |
| 77 | // the size of m_lists array |
| 78 | size_t m_hashSize; |
| 79 | |
| 80 | // the type of indexing we use |
| 81 | wxKeyType m_keyType; |
| 82 | |
| 83 | // the total number of elements in the hash |
| 84 | size_t m_count; |
| 85 | |
| 86 | // should we delete our data? |
| 87 | bool m_deleteContents; |
| 88 | |
| 89 | private: |
| 90 | // no copy ctor/assignment operator (yet) |
| 91 | DECLARE_NO_COPY_CLASS(wxHashTableBase) |
| 92 | }; |
| 93 | |
| 94 | #else // if !wxUSE_OLD_HASH_TABLE |
| 95 | |
| 96 | #if !defined(wxENUM_KEY_TYPE_DEFINED) |
| 97 | #define wxENUM_KEY_TYPE_DEFINED |
| 98 | |
| 99 | enum wxKeyType |
| 100 | { |
| 101 | wxKEY_NONE, |
| 102 | wxKEY_INTEGER, |
| 103 | wxKEY_STRING |
| 104 | }; |
| 105 | |
| 106 | #endif |
| 107 | |
| 108 | union wxHashKeyValue |
| 109 | { |
| 110 | long integer; |
| 111 | wxChar *string; |
| 112 | }; |
| 113 | |
| 114 | // for some compilers (AIX xlC), defining it as friend inside the class is not |
| 115 | // enough, so provide a real forward declaration |
| 116 | class WXDLLIMPEXP_BASE wxHashTableBase; |
| 117 | |
| 118 | class WXDLLIMPEXP_BASE wxHashTableBase_Node |
| 119 | { |
| 120 | friend class WXDLLIMPEXP_BASE wxHashTableBase; |
| 121 | typedef class WXDLLIMPEXP_BASE wxHashTableBase_Node _Node; |
| 122 | public: |
| 123 | wxHashTableBase_Node( long key, void* value, |
| 124 | wxHashTableBase* table ); |
| 125 | wxHashTableBase_Node( const wxChar* key, void* value, |
| 126 | wxHashTableBase* table ); |
| 127 | ~wxHashTableBase_Node(); |
| 128 | |
| 129 | long GetKeyInteger() const { return m_key.integer; } |
| 130 | const wxChar* GetKeyString() const { return m_key.string; } |
| 131 | |
| 132 | void* GetData() const { return m_value; } |
| 133 | void SetData( void* data ) { m_value = data; } |
| 134 | |
| 135 | protected: |
| 136 | _Node* GetNext() const { return m_next; } |
| 137 | |
| 138 | protected: |
| 139 | // next node in the chain |
| 140 | wxHashTableBase_Node* m_next; |
| 141 | |
| 142 | // key |
| 143 | wxHashKeyValue m_key; |
| 144 | |
| 145 | // value |
| 146 | void* m_value; |
| 147 | |
| 148 | // pointer to the hash containing the node, used to remove the |
| 149 | // node from the hash when the user deletes the node iterating |
| 150 | // through it |
| 151 | // TODO: move it to wxHashTable_Node (only wxHashTable supports |
| 152 | // iteration) |
| 153 | wxHashTableBase* m_hashPtr; |
| 154 | }; |
| 155 | |
| 156 | class WXDLLIMPEXP_BASE wxHashTableBase |
| 157 | #if !wxUSE_STL |
| 158 | : public wxObject |
| 159 | #endif |
| 160 | { |
| 161 | friend class WXDLLIMPEXP_BASE wxHashTableBase_Node; |
| 162 | public: |
| 163 | typedef wxHashTableBase_Node Node; |
| 164 | |
| 165 | wxHashTableBase(); |
| 166 | virtual ~wxHashTableBase() { }; |
| 167 | |
| 168 | void Create( wxKeyType keyType = wxKEY_INTEGER, |
| 169 | size_t size = wxHASH_SIZE_DEFAULT ); |
| 170 | void Clear(); |
| 171 | void Destroy(); |
| 172 | |
| 173 | size_t GetSize() const { return m_size; } |
| 174 | size_t GetCount() const { return m_count; } |
| 175 | |
| 176 | void DeleteContents( bool flag ) { m_deleteContents = flag; } |
| 177 | |
| 178 | static long MakeKey(const wxChar *string); |
| 179 | |
| 180 | protected: |
| 181 | void DoPut( long key, long hash, void* data ); |
| 182 | void DoPut( const wxChar* key, long hash, void* data ); |
| 183 | void* DoGet( long key, long hash ) const; |
| 184 | void* DoGet( const wxChar* key, long hash ) const; |
| 185 | void* DoDelete( long key, long hash ); |
| 186 | void* DoDelete( const wxChar* key, long hash ); |
| 187 | |
| 188 | private: |
| 189 | // Remove the node from the hash, *only called from |
| 190 | // ~wxHashTable*_Node destructor |
| 191 | void DoRemoveNode( wxHashTableBase_Node* node ); |
| 192 | |
| 193 | // destroys data contained in the node if appropriate: |
| 194 | // deletes the key if it is a string and destrys |
| 195 | // the value if m_deleteContents is true |
| 196 | void DoDestroyNode( wxHashTableBase_Node* node ); |
| 197 | |
| 198 | // inserts a node in the table (at the end of the chain) |
| 199 | void DoInsertNode( size_t bucket, wxHashTableBase_Node* node ); |
| 200 | |
| 201 | // removes a node from the table (fiven a pointer to the previous |
| 202 | // but does not delete it (only deletes its contents) |
| 203 | void DoUnlinkNode( size_t bucket, wxHashTableBase_Node* node, |
| 204 | wxHashTableBase_Node* prev ); |
| 205 | |
| 206 | // unconditionally deletes node value (invoking the |
| 207 | // correct destructor) |
| 208 | virtual void DoDeleteContents( wxHashTableBase_Node* node ) = 0; |
| 209 | |
| 210 | protected: |
| 211 | // number of buckets |
| 212 | size_t m_size; |
| 213 | |
| 214 | // number of nodes (key/value pairs) |
| 215 | size_t m_count; |
| 216 | |
| 217 | // table |
| 218 | Node** m_table; |
| 219 | |
| 220 | // key typ (INTEGER/STRING) |
| 221 | wxKeyType m_keyType; |
| 222 | |
| 223 | // delete contents when hash is cleared |
| 224 | bool m_deleteContents; |
| 225 | |
| 226 | private: |
| 227 | DECLARE_NO_COPY_CLASS(wxHashTableBase) |
| 228 | }; |
| 229 | |
| 230 | #endif // wxUSE_OLD_HASH_TABLE |
| 231 | |
| 232 | #if !wxUSE_STL |
| 233 | |
| 234 | #if WXWIN_COMPATIBILITY_2_4 |
| 235 | |
| 236 | // ---------------------------------------------------------------------------- |
| 237 | // a hash table which stores longs |
| 238 | // ---------------------------------------------------------------------------- |
| 239 | |
| 240 | class WXDLLIMPEXP_BASE wxHashTableLong : public wxObject |
| 241 | { |
| 242 | public: |
| 243 | wxHashTableLong(size_t size = wxHASH_SIZE_DEFAULT) |
| 244 | { Init(size); } |
| 245 | virtual ~wxHashTableLong(); |
| 246 | |
| 247 | void Create(size_t size = wxHASH_SIZE_DEFAULT); |
| 248 | void Destroy(); |
| 249 | |
| 250 | size_t GetSize() const { return m_hashSize; } |
| 251 | size_t GetCount() const { return m_count; } |
| 252 | |
| 253 | void Put(long key, long value); |
| 254 | long Get(long key) const; |
| 255 | long Delete(long key); |
| 256 | |
| 257 | protected: |
| 258 | void Init(size_t size); |
| 259 | |
| 260 | private: |
| 261 | wxArrayLong **m_values, |
| 262 | **m_keys; |
| 263 | |
| 264 | // the size of array above |
| 265 | size_t m_hashSize; |
| 266 | |
| 267 | // the total number of elements in the hash |
| 268 | size_t m_count; |
| 269 | |
| 270 | // not implemented yet |
| 271 | DECLARE_NO_COPY_CLASS(wxHashTableLong) |
| 272 | }; |
| 273 | |
| 274 | // ---------------------------------------------------------------------------- |
| 275 | // wxStringHashTable: a hash table which indexes strings with longs |
| 276 | // ---------------------------------------------------------------------------- |
| 277 | |
| 278 | class WXDLLIMPEXP_BASE wxStringHashTable : public wxObject |
| 279 | { |
| 280 | public: |
| 281 | wxStringHashTable(size_t sizeTable = wxHASH_SIZE_DEFAULT); |
| 282 | virtual ~wxStringHashTable(); |
| 283 | |
| 284 | // add a string associated with this key to the table |
| 285 | void Put(long key, const wxString& value); |
| 286 | |
| 287 | // get the string from the key: if not found, an empty string is returned |
| 288 | // and the wasFound is set to false if not NULL |
| 289 | wxString Get(long key, bool *wasFound = NULL) const; |
| 290 | |
| 291 | // remove the item, returning true if the item was found and deleted |
| 292 | bool Delete(long key) const; |
| 293 | |
| 294 | // clean up |
| 295 | void Destroy(); |
| 296 | |
| 297 | private: |
| 298 | wxArrayLong **m_keys; |
| 299 | wxArrayString **m_values; |
| 300 | |
| 301 | // the size of array above |
| 302 | size_t m_hashSize; |
| 303 | |
| 304 | DECLARE_NO_COPY_CLASS(wxStringHashTable) |
| 305 | }; |
| 306 | |
| 307 | #endif // WXWIN_COMPATIBILITY_2_4 |
| 308 | |
| 309 | #endif // !wxUSE_STL |
| 310 | |
| 311 | // ---------------------------------------------------------------------------- |
| 312 | // for compatibility only |
| 313 | // ---------------------------------------------------------------------------- |
| 314 | |
| 315 | #if !wxUSE_OLD_HASH_TABLE |
| 316 | |
| 317 | class WXDLLIMPEXP_BASE wxHashTable_Node : public wxHashTableBase_Node |
| 318 | { |
| 319 | friend class WXDLLIMPEXP_BASE wxHashTable; |
| 320 | public: |
| 321 | wxHashTable_Node( long key, void* value, |
| 322 | wxHashTableBase* table ) |
| 323 | : wxHashTableBase_Node( key, value, table ) { } |
| 324 | wxHashTable_Node( const wxChar* key, void* value, |
| 325 | wxHashTableBase* table ) |
| 326 | : wxHashTableBase_Node( key, value, table ) { } |
| 327 | |
| 328 | wxObject* GetData() const |
| 329 | { return (wxObject*)wxHashTableBase_Node::GetData(); } |
| 330 | void SetData( wxObject* data ) |
| 331 | { wxHashTableBase_Node::SetData( data ); } |
| 332 | |
| 333 | wxHashTable_Node* GetNext() const |
| 334 | { return (wxHashTable_Node*)wxHashTableBase_Node::GetNext(); } |
| 335 | }; |
| 336 | |
| 337 | // should inherit protectedly, but it is public for compatibility in |
| 338 | // order to publicly inherit from wxObject |
| 339 | class WXDLLIMPEXP_BASE wxHashTable : public wxHashTableBase |
| 340 | { |
| 341 | typedef wxHashTableBase hash; |
| 342 | public: |
| 343 | typedef wxHashTable_Node Node; |
| 344 | typedef wxHashTable_Node* compatibility_iterator; |
| 345 | public: |
| 346 | wxHashTable( wxKeyType keyType = wxKEY_INTEGER, |
| 347 | size_t size = wxHASH_SIZE_DEFAULT ) |
| 348 | : wxHashTableBase() { Create( keyType, size ); BeginFind(); } |
| 349 | wxHashTable( const wxHashTable& table ); |
| 350 | |
| 351 | virtual ~wxHashTable() { Destroy(); } |
| 352 | |
| 353 | const wxHashTable& operator=( const wxHashTable& ); |
| 354 | |
| 355 | // key and value are the same |
| 356 | void Put(long value, wxObject *object) |
| 357 | { DoPut( value, value, object ); } |
| 358 | void Put(long lhash, long value, wxObject *object) |
| 359 | { DoPut( value, lhash, object ); } |
| 360 | void Put(const wxChar *value, wxObject *object) |
| 361 | { DoPut( value, MakeKey( value ), object ); } |
| 362 | void Put(long lhash, const wxChar *value, wxObject *object) |
| 363 | { DoPut( value, lhash, object ); } |
| 364 | |
| 365 | // key and value are the same |
| 366 | wxObject *Get(long value) const |
| 367 | { return (wxObject*)DoGet( value, value ); } |
| 368 | wxObject *Get(long lhash, long value) const |
| 369 | { return (wxObject*)DoGet( value, lhash ); } |
| 370 | wxObject *Get(const wxChar *value) const |
| 371 | { return (wxObject*)DoGet( value, MakeKey( value ) ); } |
| 372 | wxObject *Get(long lhash, const wxChar *value) const |
| 373 | { return (wxObject*)DoGet( value, lhash ); } |
| 374 | |
| 375 | // Deletes entry and returns data if found |
| 376 | wxObject *Delete(long key) |
| 377 | { return (wxObject*)DoDelete( key, key ); } |
| 378 | wxObject *Delete(long lhash, long key) |
| 379 | { return (wxObject*)DoDelete( key, lhash ); } |
| 380 | wxObject *Delete(const wxChar *key) |
| 381 | { return (wxObject*)DoDelete( key, MakeKey( key ) ); } |
| 382 | wxObject *Delete(long lhash, const wxChar *key) |
| 383 | { return (wxObject*)DoDelete( key, lhash ); } |
| 384 | |
| 385 | // Construct your own integer key from a string, e.g. in case |
| 386 | // you need to combine it with something |
| 387 | long MakeKey(const wxChar *string) const |
| 388 | { return wxHashTableBase::MakeKey(string); } |
| 389 | |
| 390 | // Way of iterating through whole hash table (e.g. to delete everything) |
| 391 | // Not necessary, of course, if you're only storing pointers to |
| 392 | // objects maintained separately |
| 393 | void BeginFind() { m_curr = NULL; m_currBucket = 0; } |
| 394 | Node* Next(); |
| 395 | |
| 396 | void Clear() { wxHashTableBase::Clear(); } |
| 397 | |
| 398 | size_t GetCount() const { return wxHashTableBase::GetCount(); } |
| 399 | protected: |
| 400 | virtual void DoDeleteContents( wxHashTableBase_Node* node ); |
| 401 | |
| 402 | // copy helper |
| 403 | void DoCopy( const wxHashTable& copy ); |
| 404 | |
| 405 | // searches the next node starting from bucket bucketStart and sets |
| 406 | // m_curr to it and m_currBucket to its bucket |
| 407 | void GetNextNode( size_t bucketStart ); |
| 408 | private: |
| 409 | // current node |
| 410 | Node* m_curr; |
| 411 | |
| 412 | // bucket the current node belongs to |
| 413 | size_t m_currBucket; |
| 414 | }; |
| 415 | |
| 416 | #else // if wxUSE_OLD_HASH_TABLE |
| 417 | |
| 418 | class WXDLLIMPEXP_BASE wxHashTable : public wxObject |
| 419 | { |
| 420 | public: |
| 421 | typedef wxNode Node; |
| 422 | typedef wxNode* compatibility_iterator; |
| 423 | |
| 424 | int n; |
| 425 | int current_position; |
| 426 | wxNode *current_node; |
| 427 | |
| 428 | unsigned int key_type; |
| 429 | wxList **hash_table; |
| 430 | |
| 431 | wxHashTable(int the_key_type = wxKEY_INTEGER, |
| 432 | int size = wxHASH_SIZE_DEFAULT); |
| 433 | ~wxHashTable(); |
| 434 | |
| 435 | // copy ctor and assignment operator |
| 436 | wxHashTable(const wxHashTable& table) : wxObject() |
| 437 | { DoCopy(table); } |
| 438 | wxHashTable& operator=(const wxHashTable& table) |
| 439 | { Clear(); DoCopy(table); return *this; } |
| 440 | |
| 441 | void DoCopy(const wxHashTable& table); |
| 442 | |
| 443 | void Destroy(); |
| 444 | |
| 445 | bool Create(int the_key_type = wxKEY_INTEGER, |
| 446 | int size = wxHASH_SIZE_DEFAULT); |
| 447 | |
| 448 | // Note that there are 2 forms of Put, Get. |
| 449 | // With a key and a value, the *value* will be checked |
| 450 | // when a collision is detected. Otherwise, if there are |
| 451 | // 2 items with a different value but the same key, |
| 452 | // we'll retrieve the WRONG ONE. So where possible, |
| 453 | // supply the required value along with the key. |
| 454 | // In fact, the value-only versions make a key, and still store |
| 455 | // the value. The use of an explicit key might be required |
| 456 | // e.g. when combining several values into one key. |
| 457 | // When doing that, it's highly likely we'll get a collision, |
| 458 | // e.g. 1 + 2 = 3, 2 + 1 = 3. |
| 459 | |
| 460 | // key and value are NOT necessarily the same |
| 461 | void Put(long key, long value, wxObject *object); |
| 462 | void Put(long key, const wxChar *value, wxObject *object); |
| 463 | |
| 464 | // key and value are the same |
| 465 | void Put(long value, wxObject *object); |
| 466 | void Put(const wxChar *value, wxObject *object); |
| 467 | |
| 468 | // key and value not the same |
| 469 | wxObject *Get(long key, long value) const; |
| 470 | wxObject *Get(long key, const wxChar *value) const; |
| 471 | |
| 472 | // key and value are the same |
| 473 | wxObject *Get(long value) const; |
| 474 | wxObject *Get(const wxChar *value) const; |
| 475 | |
| 476 | // Deletes entry and returns data if found |
| 477 | wxObject *Delete(long key); |
| 478 | wxObject *Delete(const wxChar *key); |
| 479 | |
| 480 | wxObject *Delete(long key, int value); |
| 481 | wxObject *Delete(long key, const wxChar *value); |
| 482 | |
| 483 | // Construct your own integer key from a string, e.g. in case |
| 484 | // you need to combine it with something |
| 485 | long MakeKey(const wxChar *string) const; |
| 486 | |
| 487 | // Way of iterating through whole hash table (e.g. to delete everything) |
| 488 | // Not necessary, of course, if you're only storing pointers to |
| 489 | // objects maintained separately |
| 490 | |
| 491 | void BeginFind(); |
| 492 | Node* Next(); |
| 493 | |
| 494 | void DeleteContents(bool flag); |
| 495 | void Clear(); |
| 496 | |
| 497 | // Returns number of nodes |
| 498 | size_t GetCount() const { return m_count; } |
| 499 | |
| 500 | private: |
| 501 | size_t m_count; // number of elements in the hashtable |
| 502 | bool m_deleteContents; |
| 503 | |
| 504 | DECLARE_DYNAMIC_CLASS(wxHashTable) |
| 505 | }; |
| 506 | |
| 507 | #endif // wxUSE_OLD_HASH_TABLE |
| 508 | |
| 509 | #if !wxUSE_OLD_HASH_TABLE |
| 510 | |
| 511 | // defines a new type safe hash table which stores the elements of type eltype |
| 512 | // in lists of class listclass |
| 513 | #define _WX_DECLARE_HASH(eltype, dummy, hashclass, classexp) \ |
| 514 | classexp hashclass : public wxHashTableBase \ |
| 515 | { \ |
| 516 | public: \ |
| 517 | hashclass(wxKeyType keyType = wxKEY_INTEGER, \ |
| 518 | size_t size = wxHASH_SIZE_DEFAULT) \ |
| 519 | : wxHashTableBase() { Create(keyType, size); } \ |
| 520 | \ |
| 521 | virtual ~hashclass() { Destroy(); } \ |
| 522 | \ |
| 523 | void Put(long key, eltype *data) { DoPut(key, key, (void*)data); } \ |
| 524 | void Put(long lhash, long key, eltype *data) \ |
| 525 | { DoPut(key, lhash, (void*)data); } \ |
| 526 | eltype *Get(long key) const { return (eltype*)DoGet(key, key); } \ |
| 527 | eltype *Get(long lhash, long key) const \ |
| 528 | { return (eltype*)DoGet(key, lhash); } \ |
| 529 | eltype *Delete(long key) { return (eltype*)DoDelete(key, key); } \ |
| 530 | eltype *Delete(long lhash, long key) \ |
| 531 | { return (eltype*)DoDelete(key, lhash); } \ |
| 532 | protected: \ |
| 533 | virtual void DoDeleteContents( wxHashTableBase_Node* node ) \ |
| 534 | { delete (eltype*)node->GetData(); } \ |
| 535 | \ |
| 536 | DECLARE_NO_COPY_CLASS(hashclass) \ |
| 537 | } |
| 538 | |
| 539 | #else // if wxUSE_OLD_HASH_TABLE |
| 540 | |
| 541 | #define _WX_DECLARE_HASH(eltype, listclass, hashclass, classexp) \ |
| 542 | classexp hashclass : public wxHashTableBase \ |
| 543 | { \ |
| 544 | public: \ |
| 545 | hashclass(wxKeyType keyType = wxKEY_INTEGER, \ |
| 546 | size_t size = wxHASH_SIZE_DEFAULT) \ |
| 547 | { Create(keyType, size); } \ |
| 548 | \ |
| 549 | ~hashclass() { Destroy(); } \ |
| 550 | \ |
| 551 | void Put(long key, long val, eltype *data) { DoPut(key, val, data); } \ |
| 552 | void Put(long key, eltype *data) { DoPut(key, key, data); } \ |
| 553 | \ |
| 554 | eltype *Get(long key, long value) const \ |
| 555 | { \ |
| 556 | wxNodeBase *node = GetNode(key, value); \ |
| 557 | return node ? ((listclass::Node *)node)->GetData() : (eltype *)0; \ |
| 558 | } \ |
| 559 | eltype *Get(long key) const { return Get(key, key); } \ |
| 560 | \ |
| 561 | eltype *Delete(long key, long value) \ |
| 562 | { \ |
| 563 | eltype *data; \ |
| 564 | \ |
| 565 | wxNodeBase *node = GetNode(key, value); \ |
| 566 | if ( node ) \ |
| 567 | { \ |
| 568 | data = ((listclass::Node *)node)->GetData(); \ |
| 569 | \ |
| 570 | delete node; \ |
| 571 | m_count--; \ |
| 572 | } \ |
| 573 | else \ |
| 574 | { \ |
| 575 | data = (eltype *)0; \ |
| 576 | } \ |
| 577 | \ |
| 578 | return data; \ |
| 579 | } \ |
| 580 | eltype *Delete(long key) { return Delete(key, key); } \ |
| 581 | \ |
| 582 | protected: \ |
| 583 | void DoPut(long key, long value, eltype *data) \ |
| 584 | { \ |
| 585 | size_t slot = (size_t)abs((int)(key % (long)m_hashSize)); \ |
| 586 | \ |
| 587 | if ( !m_hashTable[slot] ) \ |
| 588 | { \ |
| 589 | m_hashTable[slot] = new listclass(m_keyType); \ |
| 590 | if ( m_deleteContents ) \ |
| 591 | m_hashTable[slot]->DeleteContents(true); \ |
| 592 | } \ |
| 593 | \ |
| 594 | ((listclass *)m_hashTable[slot])->Append(value, data); \ |
| 595 | m_count++; \ |
| 596 | } \ |
| 597 | \ |
| 598 | DECLARE_NO_COPY_CLASS(hashclass) \ |
| 599 | } |
| 600 | |
| 601 | #endif // wxUSE_OLD_HASH_TABLE |
| 602 | |
| 603 | // this macro is to be used in the user code |
| 604 | #define WX_DECLARE_HASH(el, list, hash) \ |
| 605 | _WX_DECLARE_HASH(el, list, hash, class) |
| 606 | |
| 607 | // and this one does exactly the same thing but should be used inside the |
| 608 | // library |
| 609 | #define WX_DECLARE_EXPORTED_HASH(el, list, hash) \ |
| 610 | _WX_DECLARE_HASH(el, list, hash, class WXDLLEXPORT) |
| 611 | |
| 612 | #define WX_DECLARE_USER_EXPORTED_HASH(el, list, hash, usergoo) \ |
| 613 | _WX_DECLARE_HASH(el, list, hash, class usergoo) |
| 614 | |
| 615 | // delete all hash elements |
| 616 | // |
| 617 | // NB: the class declaration of the hash elements must be visible from the |
| 618 | // place where you use this macro, otherwise the proper destructor may not |
| 619 | // be called (a decent compiler should give a warning about it, but don't |
| 620 | // count on it)! |
| 621 | #define WX_CLEAR_HASH_TABLE(hash) \ |
| 622 | { \ |
| 623 | (hash).BeginFind(); \ |
| 624 | wxHashTable::compatibility_iterator it = (hash).Next(); \ |
| 625 | while( it ) \ |
| 626 | { \ |
| 627 | delete it->GetData(); \ |
| 628 | it = (hash).Next(); \ |
| 629 | } \ |
| 630 | (hash).Clear(); \ |
| 631 | } |
| 632 | |
| 633 | #endif |
| 634 | // _WX_HASH_H__ |