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- /*
- * File: wx_hash.h
- * Purpose: Basic hash table implementation
- *
- * wxWindows 1.50
- * Copyright (c) 1993 Artificial Intelligence Applications Institute,
- * The University of Edinburgh
- *
- * Author: Julian Smart
- * Date: 7-9-93
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose is hereby granted without fee, provided
- * that the above copyright notice, author statement and this permission
- * notice appear in all copies of this software and related documentation.
- *
- * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS,
- * IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
- *
- * IN NO EVENT SHALL THE ARTIFICIAL INTELLIGENCE APPLICATIONS INSTITUTE OR THE
- * UNIVERSITY OF EDINBURGH BE LIABLE FOR ANY SPECIAL, INCIDENTAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER RESULTING FROM
- * LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT ADVISED OF THE POSSIBILITY OF
- * DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH
- * THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
- #ifndef wxb_hashh
- #define wxb_hashh
-
- #include "wx_obj.h"
- #include "wx_list.h"
-
- /*
- * A hash table is an array of user-definable size with lists
- * of data items hanging off the array positions. Usually there'll
- * be a hit, so no search is required; otherwise we'll have to run down
- * the list to find the desired item.
- */
-
- #ifdef IN_CPROTO
- typedef void *wxHashTable ;
- #else
-
- class wxHashTable: public wxObject
- {
- public:
- int n;
- int current_position;
- wxNode *current_node;
-
- unsigned int key_type;
- wxList **hash_table;
-
- wxHashTable(unsigned int the_key_type, int size = 1000);
- ~wxHashTable(void);
-
- // Note that there are 2 forms of Put, Get.
- // With a key and a value, the *value* will be checked
- // when a collision is detected. Otherwise, if there are
- // 2 items with a different value but the same key,
- // we'll retrieve the WRONG ONE. So where possible,
- // supply the required value along with the key.
- // In fact, the value-only versions make a key, and still store
- // the value. The use of an explicit key might be required
- // e.g. when combining several values into one key.
- // When doing that, it's highly likely we'll get a collision,
- // e.g. 1 + 2 = 3, 2 + 1 = 3.
-
- // key and value are NOT necessarily the same
- void Put(long key, long value, wxObject *object);
- void Put(long key, char *value, wxObject *object);
-
- // key and value are the same
- void Put(long value, wxObject *object);
- void Put(char *value, wxObject *object);
-
- // key and value not the same
- wxObject *Get(long key, long value);
- wxObject *Get(long key, char *value);
-
- // key and value are the same
- wxObject *Get(long value);
- wxObject *Get(char *value);
-
- // Deletes entry and returns data if found
- wxObject *Delete(long key);
- wxObject *Delete(char *key);
-
- wxObject *Delete(long key, int value);
- wxObject *Delete(long key, char *value);
-
- // Construct your own integer key from a string, e.g. in case
- // you need to combine it with something
- long MakeKey(char *string);
-
- // Way of iterating through whole hash table (e.g. to delete everything)
- // Not necessary, of course, if you're only storing pointers to
- // objects maintained separately
-
- void BeginFind(void);
- wxNode *Next(void);
-
- void DeleteContents(Bool flag);
- void Clear(void);
-
- };
-
- #endif // IN_CPROTO
- #endif // wxb_hashh
-