dde0793b53
* 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!
101 lines
2.5 KiB
C
101 lines
2.5 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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static HB_HASH_TABLE_PTR s_comp_Identifiers; /* table of identifiers for reuse */
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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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hb_hashTableKill( s_comp_Identifiers );
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}
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