Files
harbour-core/harbour/include/hbhash.h
Ryszard Glab dde0793b53 2005-11-14 11:00 UTC+0100 Ryszard Glab <rglab@imid.med.pl>
* include/hbcomp.h
   * include/hberrors.h
   * include/hbexpra.c
   * include/hbexprb.c
   * include/hbexprop.h
   * include/hbhash.h
   * include/hbmacro.h
   * include/hbpcode.h
   * source/common/Makefile
   * source/common/expropt1.c
   * source/common/expropt2.c
   * source/common/hbhash.c
   * source/compiler/expropta.c
   * source/compiler/exproptb.c
   * source/compiler/genc.c
   * source/compiler/harbour.c
   * source/compiler/harbour.l
   * source/compiler/harbour.y
   * source/compiler/hbfix.c
   * source/compiler/hbgenerr.c
   * source/compiler/hbident.c
   * source/compiler/hbpcode.c
   * source/macro/macro.l
   * source/macro/macro.y
   * source/macro/macroa.c
   * source/macro/macrob.c
   * source/rtl/dates.c
   * source/vm/hvm.c
   * source/vm/macro.c
   + source/common/hbdate.c
   + tests/ddate.prg
   + tests/switch.prg
      +added support for DATE type constants in the following format:
         0dYYYYMMDD
      for example (see tests/ddate.prg for more):
      IF( dDate > 0d20051112 )

      +added support for SWITCH command (see tests/switch.prg)
         SWITCH <expr>
         CASE <integer_expression>
            ...
            [EXIT]
         CASE <string_expression>
            ...
            [EXIT]
         [OTHERWISE]
            ...
         END

   Notice:
      - Integer and string expressions can be mixed in a single
        SWITCH command with no runtime errors;
      - CASE expression have to be resolved at compile time and
        the result has to be either an integer or string constant
      - if there is no EXIT statement then next CASE is executed
        (or OTHERWISE for the last CASE)
      For example:
      CASE 1+32+2*4
      CASE CHR(64)
      CASE ASC('A')
      CASE "A"+CHR(13)

   Notice:
      The above changes apply only to FLEX version!
2005-11-14 09:47:46 +00:00

98 lines
4.0 KiB
C

/*
* $Id$
*/
/*
* Harbour Project source code:
* Harbour common hash table implementation
*
* Copyright 1999 Ryszard Glab <rglab@imid.med.pl>
* www - http://www.harbour-project.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
*
* As a special exception, the Harbour Project gives permission for
* additional uses of the text contained in its release of Harbour.
*
* The exception is that, if you link the Harbour libraries with other
* files to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the Harbour library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the Harbour
* Project under the name Harbour. If you copy code from other
* Harbour Project or Free Software Foundation releases into a copy of
* Harbour, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for Harbour, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*
*/
#ifndef HB_HASH_H_
#define HB_HASH_H_
#include "hbapi.h"
HB_EXTERN_BEGIN
struct HB_HASH_TABLE_;
#define HB_HASH_FUNC( hbfunc ) ULONG hbfunc( struct HB_HASH_TABLE_ *HashPtr, void *Value, void *Cargo )
typedef HB_HASH_FUNC( HB_HASH_FUNC_ );
typedef HB_HASH_FUNC_ *HB_HASH_FUNC_PTR;
typedef struct HB_HASH_ITEM_
{
void *ValPtr; /* value stored in the hash table */
void *KeyPtr;
ULONG key;
struct HB_HASH_ITEM_ *next;
} HB_HASH_ITEM, *HB_HASH_ITEM_PTR;
typedef struct HB_HASH_TABLE_
{
HB_HASH_ITEM_PTR *pItems; /* pointer to items */
ULONG ulTableSize; /* the table size - number of slots */
ULONG ulCount; /* number of items stored in the table */
ULONG ulUsed; /* number of used slots */
HB_HASH_FUNC_PTR pKeyFunc; /* pointer to func that returns key value */
HB_HASH_FUNC_PTR pDeleteItemFunc; /* ptr to func that deletes value stured in the table */
HB_HASH_FUNC_PTR pCompFunc; /* ptr to func that compares two itmes */
} HB_HASH_TABLE, *HB_HASH_TABLE_PTR;
extern HB_HASH_TABLE_PTR hb_hashTableCreate( ULONG ulSize,
HB_HASH_FUNC_PTR pHashFunc,
HB_HASH_FUNC_PTR pDelete,
HB_HASH_FUNC_PTR pComp );
extern void hb_hashTableKill( HB_HASH_TABLE_PTR pTable ); /* release all items and the hash table */
extern BOOL hb_hashTableAdd( HB_HASH_TABLE_PTR pTable, void *pKey, void *pValue ); /* add a new item into the table */
extern void * hb_hashTableFind( HB_HASH_TABLE_PTR pTable, void *pKey ); /* return the pointer to item's value or NULL if not found */
extern HB_HASH_TABLE_PTR hb_hashTableResize( HB_HASH_TABLE_PTR pTable, ULONG ulNewSize ); /* resize the hash table */
HB_EXTERN_END
#endif /* HB_HASH_H_ */