167ef1f0c5
* contrib/htmllib/default.ch
* fixed IF/THEN command
* source/compiler/hbident.c
* source/compiler/harbour.l
* added memory duplication for macro text (&a._m)
* source/pp/ppcore.c
* fixed my last commits
* processed this file with indent
106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/*
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* $Id$
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*/
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/*
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* Harbour Project source code:
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* The cache for identifiers
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*
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* Copyright 1999 Ryszard Glab <rglab@imid.med.pl>
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* www - http://www.harbour-project.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
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*
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*/
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#include <string.h>
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#include "hbhash.h"
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#include "hbcomp.h"
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#define HB_IDENT_TABLE_SIZE 509UL
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/* table of identifiers for reuse */
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static HB_HASH_TABLE_PTR s_comp_Identifiers = NULL;
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/* create a new identifier or return the existing one
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*/
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char * hb_compIdentifierNew( char * szName, BOOL bCopy )
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{
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char * szIdent;
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szIdent = ( char * )hb_hashTableFind( s_comp_Identifiers, (void *) szName );
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if( !szIdent )
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{
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if( bCopy )
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szIdent = hb_strdup( szName );
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else
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szIdent = szName;
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hb_hashTableAdd( s_comp_Identifiers, (void *)szIdent, (void *)szIdent );
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}
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return szIdent;
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}
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/* returns a hash key */
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HB_HASH_FUNC( hb_comp_IdentKey ) /* ULONG func (void *Value, void *Cargo) */
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{
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ULONG ulSum = 0;
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char *szName = ( char * )Value;
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while( *szName )
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ulSum += *szName++;
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HB_SYMBOL_UNUSED( HashPtr );
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HB_SYMBOL_UNUSED( Cargo );
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return ulSum % HB_IDENT_TABLE_SIZE;
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}
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/* deletes an identifier */
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HB_HASH_FUNC( hb_comp_IdentDel )
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{
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hb_xfree( Value );
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HB_SYMBOL_UNUSED( HashPtr );
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HB_SYMBOL_UNUSED( Cargo );
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return 1;
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}
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/* compares two identifiers */
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HB_HASH_FUNC( hb_comp_IdentComp )
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{
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HB_SYMBOL_UNUSED( HashPtr );
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return strcmp( (char *)Value, (char *)Cargo );
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}
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/* initialize the hash table for identifiers */
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void hb_compIdentifierOpen( )
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{
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s_comp_Identifiers = hb_hashTableCreate( HB_IDENT_TABLE_SIZE, hb_comp_IdentKey,
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hb_comp_IdentDel, hb_comp_IdentComp );
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}
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/* release identifiers table */
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void hb_compIdentifierClose( )
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{
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if( s_comp_Identifiers )
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{
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hb_hashTableKill( s_comp_Identifiers );
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s_comp_Identifiers = NULL;
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}
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}
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