Files
harbour-core/harbour/source/common/expropt2.c
Przemyslaw Czerpak 503c1ddf13 2007-09-02 17:27 UTC+0200 Przemyslaw Czerpak (druzus/at/priv.onet.pl)
* harbour/hbgtmk.sh
  * harbour/tests/codebl.prg
  * harbour/tests/testprof.prg
  * harbour/tests/keywords.prg
  * harbour/tests/testpp.prg
  * harbour/make_rpm.sh
  * harbour/makefile.gc
  * harbour/bin/hb-mkslib.sh
  * harbour/include/hbexpra.c
  * harbour/include/hbmath.ch
  * harbour/include/hbrddntx.h
  * harbour/include/hbexprb.c
  * harbour/harbour.spec
  * harbour/contrib/dot/pp.prg
  * harbour/contrib/libct/ctwin.c
  * harbour/contrib/ole2/w32ole.c
  * harbour/contrib/hgf/win32/win32.c
  * harbour/contrib/mysql/mysql.ch
  * harbour/contrib/odbc/todbc.prg
  * harbour/contrib/odbc/sql.ch
  * harbour/contrib/hb_struc/hbstruc.ch
  * harbour/contrib/bmdbfcdx/bmdbfcdx1.c
  * harbour/contrib/msql/msql.ch
  * harbour/contrib/msql/readme.txt
  * harbour/source/pp/ppcore.c
  * harbour/source/rtl/gtdos/gtdos.c
  * harbour/source/rtl/gtxwc/gtxwc.h
  * harbour/source/rtl/hbgtcore.c
  * harbour/source/rtl/gtcrs/gtcrs.h
  * harbour/source/rtl/gtalleg/gtalleg.c
  * harbour/source/rtl/gtalleg/ssf.h
  * harbour/source/rtl/gtalleg/fixedth.sfc
  * harbour/source/rtl/gtchrmap.c
  * harbour/source/rtl/itemseri.c
  * harbour/source/rtl/gtstd/gtstd.c
  * harbour/source/rtl/gtsln/gtsln.h
  * harbour/source/rtl/gttrm/gttrm.c
  * harbour/source/rtl/gtpca/gtpca.c
  * harbour/source/rtl/hbhex.c
  * harbour/source/rtl/tget.prg
  * harbour/source/rtl/gtcgi/gtcgi.c
  * harbour/source/rtl/hbinet.c
  * harbour/source/vm/hvm.c
  * harbour/source/debug/dbgtobj.prg
  * harbour/source/debug/dbgwa.prg
  * harbour/source/common/expropt2.c
  * harbour/source/rdd/dbfcdx/dbfcdx1.c
  * harbour/source/rdd/dbffpt/dbffpt1.c
  * harbour/utils/hbpp/hbppcore.c
  * harbour/utils/hbpptest/pp_test.prg
  * harbour/utils/hbpptest/pretest.prg
  * harbour/make_tgz.sh
    * converted TABs to SPACEs
2007-09-02 15:28:05 +00:00

1674 lines
55 KiB
C

/*
* $Id$
*/
/*
* Harbour Project source code:
* Compiler Expression Optimizer - reducing expressions
*
* Copyright 1999 Ryszard Glab
* 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.
*
*/
/* NOTE: This must be the first definition
* This is a common code shared by macro and standalone compiler
*/
#define HB_COMMON_SUPPORT
#include <math.h>
#include "hbmacro.h"
#include "hbcomp.h"
#include "hbdate.h"
static HB_EXPR_PTR hb_compExprReducePlusStrings( HB_EXPR_PTR pLeft, HB_EXPR_PTR pRight, HB_COMP_DECL )
{
if( pLeft->value.asString.dealloc )
{
pLeft->value.asString.string = (char *) hb_xrealloc( pLeft->value.asString.string, pLeft->ulLength + pRight->ulLength + 1 );
memcpy( pLeft->value.asString.string + pLeft->ulLength,
pRight->value.asString.string, pRight->ulLength );
pLeft->ulLength += pRight->ulLength;
pLeft->value.asString.string[ pLeft->ulLength ] = '\0';
}
else
{
char *szString;
szString = (char *) hb_xgrab( pLeft->ulLength + pRight->ulLength + 1 );
memcpy( szString, pLeft->value.asString.string, pLeft->ulLength );
memcpy( szString + pLeft->ulLength, pRight->value.asString.string, pRight->ulLength );
pLeft->ulLength += pRight->ulLength;
szString[ pLeft->ulLength ] = '\0';
pLeft->value.asString.string = szString;
pLeft->value.asString.dealloc = TRUE;
}
HB_COMP_EXPR_FREE( pRight );
return pLeft;
}
static HB_EXPR_PTR hb_compExprReduceMinusStrings( HB_EXPR_PTR pLeft, HB_EXPR_PTR pRight, HB_COMP_DECL )
{
char * szText = pLeft->value.asString.string;
ULONG ulLen = pLeft->ulLength;
while( ulLen && szText[ ulLen - 1 ] == ' ' )
--ulLen;
if( pLeft->value.asString.dealloc )
{
pLeft->value.asString.string = (char *) hb_xrealloc( pLeft->value.asString.string, pLeft->ulLength + pRight->ulLength + 1 );
memcpy( pLeft->value.asString.string + ulLen,
pRight->value.asString.string, pRight->ulLength );
memset( pLeft->value.asString.string + ulLen + pRight->ulLength, ' ',
pLeft->ulLength - ulLen );
pLeft->ulLength += pRight->ulLength;
pLeft->value.asString.string[ pLeft->ulLength ] = '\0';
}
else
{
char *szString;
szString = (char *) hb_xgrab( pLeft->ulLength + pRight->ulLength + 1 );
memcpy( szString, pLeft->value.asString.string, ulLen );
memcpy( szString + ulLen, pRight->value.asString.string, pRight->ulLength );
memset( szString + ulLen + pRight->ulLength, ' ', pLeft->ulLength - ulLen );
pLeft->ulLength += pRight->ulLength;
szString[ pLeft->ulLength ] = '\0';
pLeft->value.asString.string = szString;
pLeft->value.asString.dealloc = TRUE;
}
HB_COMP_EXPR_FREE( pRight );
return pLeft;
}
HB_EXPR_PTR hb_compExprReduceMod( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pLeft, pRight;
pLeft = pSelf->value.asOperator.pLeft;
pRight = pSelf->value.asOperator.pRight;
if( pLeft->ExprType == HB_ET_NUMERIC && pRight->ExprType == HB_ET_NUMERIC )
{
if( pLeft->value.asNum.NumType == HB_ET_LONG && pRight->value.asNum.NumType == HB_ET_LONG )
{
if( pRight->value.asNum.val.l )
{
HB_LONG lVal = pLeft->value.asNum.val.l % pRight->value.asNum.val.l;
pSelf->value.asNum.val.l = lVal;
pSelf->value.asNum.bDec = 0;
pSelf->value.asNum.NumType = HB_ET_LONG;
pSelf->ExprType = HB_ET_NUMERIC;
pSelf->ValType = HB_EV_NUMERIC;
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
}
}
}
else
{
/* TODO: Check for incompatible types e.g. 3 % "txt"
*/
}
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceDiv( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pLeft, pRight;
pLeft = pSelf->value.asOperator.pLeft;
pRight = pSelf->value.asOperator.pRight;
if( pLeft->ExprType == HB_ET_NUMERIC && pRight->ExprType == HB_ET_NUMERIC )
{
BYTE bType = ( pLeft->value.asNum.NumType & pRight->value.asNum.NumType );
switch( bType )
{
case HB_ET_LONG:
if( pRight->value.asNum.val.l )
{
if( pLeft->value.asNum.val.l % pRight->value.asNum.val.l == 0 )
{
/* Return integer results as long */
pSelf->value.asNum.val.l = pLeft->value.asNum.val.l / pRight->value.asNum.val.l;
pSelf->value.asNum.bDec = 0;
pSelf->value.asNum.NumType = HB_ET_LONG;
}
else
{
/* Return non-integer results as double */
pSelf->value.asNum.val.d = ( double ) pLeft->value.asNum.val.l / ( double ) pRight->value.asNum.val.l;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = HB_DEFAULT_DECIMALS;
pSelf->value.asNum.NumType = HB_ET_DOUBLE;
}
pSelf->ExprType = HB_ET_NUMERIC;
}
break;
case HB_ET_DOUBLE:
if( pRight->value.asNum.val.d != 0.0 )
{
pSelf->value.asNum.val.d = pLeft->value.asNum.val.d / pRight->value.asNum.val.d;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = HB_DEFAULT_DECIMALS;
pSelf->value.asNum.NumType = HB_ET_DOUBLE;
pSelf->ExprType = HB_ET_NUMERIC;
}
break;
default:
if( pLeft->value.asNum.NumType == HB_ET_DOUBLE )
{
if( pRight->value.asNum.val.l )
{
pSelf->value.asNum.val.d = pLeft->value.asNum.val.d / ( double ) pRight->value.asNum.val.l;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = HB_DEFAULT_DECIMALS;
}
}
else
{
if( pRight->value.asNum.val.d != 0.0 )
{
pSelf->value.asNum.val.d = ( double ) pLeft->value.asNum.val.l / pRight->value.asNum.val.d;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = HB_DEFAULT_DECIMALS;
}
}
pSelf->value.asNum.NumType = HB_ET_DOUBLE;
pSelf->ExprType = HB_ET_NUMERIC;
} /* switch bType */
if( pSelf->ExprType == HB_ET_NUMERIC )
{
/* The expression was reduced - delete old components */
pSelf->ValType = HB_EV_NUMERIC;
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
}
}
else
{
/* TODO: Check for incompatible types e.g. 3 / "txt"
*/
}
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceMult( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pLeft, pRight;
pLeft = pSelf->value.asOperator.pLeft;
pRight = pSelf->value.asOperator.pRight;
if( pLeft->ExprType == HB_ET_NUMERIC && pRight->ExprType == HB_ET_NUMERIC )
{
BYTE bType = ( pLeft->value.asNum.NumType & pRight->value.asNum.NumType );
switch( bType )
{
case HB_ET_LONG:
{
HB_MAXDBL dVal = ( HB_MAXDBL ) pLeft->value.asNum.val.l * ( HB_MAXDBL ) pRight->value.asNum.val.l;
if ( HB_DBL_LIM_LONG( dVal ) )
{
pSelf->value.asNum.val.l = ( HB_LONG ) dVal;
pSelf->value.asNum.bDec = 0;
pSelf->value.asNum.NumType = HB_ET_LONG;
}
else
{
pSelf->value.asNum.val.d = ( double ) dVal;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = 0;
pSelf->value.asNum.NumType = HB_ET_DOUBLE;
}
break;
}
case HB_ET_DOUBLE:
{
pSelf->value.asNum.val.d = pLeft->value.asNum.val.d * pRight->value.asNum.val.d;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = pLeft->value.asNum.bDec + pRight->value.asNum.bDec;
pSelf->value.asNum.NumType = HB_ET_DOUBLE;
break;
}
default:
{
if( pLeft->value.asNum.NumType == HB_ET_DOUBLE )
{
pSelf->value.asNum.val.d = pLeft->value.asNum.val.d * ( double ) pRight->value.asNum.val.l;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = pLeft->value.asNum.bDec;
}
else
{
pSelf->value.asNum.val.d = ( double ) pLeft->value.asNum.val.l * pRight->value.asNum.val.d;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = pRight->value.asNum.bDec;
}
pSelf->value.asNum.NumType = HB_ET_DOUBLE;
}
}
pSelf->ExprType = HB_ET_NUMERIC;
pSelf->ValType = HB_EV_NUMERIC;
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
}
else
{
/* TODO: Check for incompatible types e.g. 3 * "txt"
*/
}
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceMinus( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pLeft, pRight;
pLeft = pSelf->value.asOperator.pLeft;
pRight = pSelf->value.asOperator.pRight;
if( pLeft->ExprType == HB_ET_NUMERIC && pRight->ExprType == HB_ET_NUMERIC )
{
BYTE bType = ( pLeft->value.asNum.NumType & pRight->value.asNum.NumType );
switch( bType )
{
case HB_ET_LONG:
{
HB_MAXDBL dVal = ( HB_MAXDBL ) pLeft->value.asNum.val.l - ( HB_MAXDBL ) pRight->value.asNum.val.l;
if ( HB_DBL_LIM_LONG( dVal ) )
{
pSelf->value.asNum.val.l = ( HB_LONG ) dVal;
pSelf->value.asNum.bDec = 0;
pSelf->value.asNum.NumType = HB_ET_LONG;
}
else
{
pSelf->value.asNum.val.d = ( double ) dVal;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = 0;
pSelf->value.asNum.NumType = HB_ET_DOUBLE;
}
break;
}
case HB_ET_DOUBLE:
{
pSelf->value.asNum.val.d = pLeft->value.asNum.val.d - pRight->value.asNum.val.d;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
if( pLeft->value.asNum.bDec < pRight->value.asNum.bDec )
pSelf->value.asNum.bDec = pRight->value.asNum.bDec;
else
pSelf->value.asNum.bDec = pLeft->value.asNum.bDec;
pSelf->value.asNum.NumType = HB_ET_DOUBLE;
break;
}
default:
{
if( pLeft->value.asNum.NumType == HB_ET_DOUBLE )
{
pSelf->value.asNum.val.d = pLeft->value.asNum.val.d - ( double ) pRight->value.asNum.val.l;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = pLeft->value.asNum.bDec;
}
else
{
pSelf->value.asNum.val.d = ( double ) pLeft->value.asNum.val.l - pRight->value.asNum.val.d;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = pRight->value.asNum.bDec;
}
pSelf->value.asNum.NumType = HB_ET_DOUBLE;
}
}
pSelf->ExprType = HB_ET_NUMERIC;
pSelf->ValType = HB_EV_NUMERIC;
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
}
else if( pLeft->ExprType == HB_ET_DATE && pRight->ExprType == HB_ET_DATE )
{
pSelf->value.asNum.val.l = pLeft->value.asNum.val.l - pRight->value.asNum.val.l;
pSelf->value.asNum.bDec = 0;
pSelf->value.asNum.NumType = HB_ET_LONG;
pSelf->ExprType = HB_ET_NUMERIC;
pSelf->ValType = HB_EV_NUMERIC;
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
}
else if( pLeft->ExprType == HB_ET_DATE && pRight->ExprType == HB_ET_NUMERIC )
{
if( pRight->value.asNum.NumType == HB_ET_LONG )
{
pSelf->value.asNum.val.l = pLeft->value.asNum.val.l - pRight->value.asNum.val.l;
}
else
{
pSelf->value.asNum.val.l = pLeft->value.asNum.val.l - ( HB_LONG ) pRight->value.asNum.val.d;
}
pSelf->ExprType = HB_ET_DATE;
pSelf->ValType = HB_EV_DATE;
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
}
else if( pLeft->ExprType == HB_ET_STRING && pRight->ExprType == HB_ET_STRING )
{
if( pRight->ulLength == 0 )
{
pSelf->ExprType = HB_ET_NONE; /* suppress deletion of operator components */
HB_COMP_EXPR_FREE( pSelf );
pSelf = pLeft;
HB_COMP_EXPR_FREE( pRight );
}
else if( pLeft->ulLength == 0 )
{
pSelf->ExprType = HB_ET_NONE; /* suppress deletion of operator components */
HB_COMP_EXPR_FREE( pSelf );
pSelf = pRight;
HB_COMP_EXPR_FREE( pLeft );
}
else
{
/* Do not reduce strings with the macro operator '&'
*/
char * szText = pLeft->value.asString.string;
ULONG ulLen = pLeft->ulLength;
BOOL fReduce = TRUE;
while( ulLen && szText[ ulLen - 1 ] == ' ' )
--ulLen;
while( ulLen-- )
{
if( *szText++ == '&' )
{
char ch = ulLen ? *szText : *pRight->value.asString.string;
if( ( ch >= 'A' && ch <= 'Z' ) ||
( ch >= 'a' && ch <= 'z' ) || ch == '_' ||
! HB_SUPPORT_HARBOUR )
{
fReduce = FALSE;
break;
}
}
}
if( fReduce )
{
pSelf->ExprType = HB_ET_NONE; /* suppress deletion of operator components */
HB_COMP_EXPR_FREE( pSelf );
pSelf = hb_compExprReduceMinusStrings( pLeft, pRight, HB_COMP_PARAM );
}
}
}
else
{
/* TODO: Check for incompatible types e.g. "txt" - 3
*/
}
return pSelf;
}
HB_EXPR_PTR hb_compExprReducePlus( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pLeft, pRight;
pLeft = pSelf->value.asOperator.pLeft;
pRight = pSelf->value.asOperator.pRight;
if( pLeft->ExprType == HB_ET_NUMERIC )
{
if( pRight->ExprType == HB_ET_NUMERIC )
{
BYTE bType = ( pLeft->value.asNum.NumType & pRight->value.asNum.NumType );
switch( bType )
{
case HB_ET_LONG:
{
HB_MAXDBL dVal = ( HB_MAXDBL ) pLeft->value.asNum.val.l + ( HB_MAXDBL ) pRight->value.asNum.val.l;
if ( HB_DBL_LIM_LONG( dVal ) )
{
pSelf->value.asNum.val.l = ( HB_LONG ) dVal;
pSelf->value.asNum.bDec = 0;
pSelf->value.asNum.NumType = HB_ET_LONG;
}
else
{
pSelf->value.asNum.val.d = ( double ) dVal;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = 0;
pSelf->value.asNum.NumType = HB_ET_DOUBLE;
}
break;
}
case HB_ET_DOUBLE:
pSelf->value.asNum.val.d = pLeft->value.asNum.val.d + pRight->value.asNum.val.d;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
if( pLeft->value.asNum.bDec < pRight->value.asNum.bDec )
pSelf->value.asNum.bDec = pRight->value.asNum.bDec;
else
pSelf->value.asNum.bDec = pLeft->value.asNum.bDec;
pSelf->value.asNum.NumType = HB_ET_DOUBLE;
break;
default:
if( pLeft->value.asNum.NumType == HB_ET_DOUBLE )
{
pSelf->value.asNum.val.d = pLeft->value.asNum.val.d + ( double ) pRight->value.asNum.val.l;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = pLeft->value.asNum.bDec;
}
else
{
pSelf->value.asNum.val.d = ( double ) pLeft->value.asNum.val.l + pRight->value.asNum.val.d;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = pRight->value.asNum.bDec;
}
pSelf->value.asNum.NumType = HB_ET_DOUBLE;
}
pSelf->ExprType = HB_ET_NUMERIC;
pSelf->ValType = HB_EV_NUMERIC;
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
}
else if( pRight->ExprType == HB_ET_DATE )
{
if( pLeft->value.asNum.NumType == HB_ET_LONG )
pSelf->value.asNum.val.l = pRight->value.asNum.val.l + pLeft->value.asNum.val.l;
else
pSelf->value.asNum.val.l = pRight->value.asNum.val.l + ( HB_LONG ) pLeft->value.asNum.val.d;
pSelf->ExprType = HB_ET_DATE;
pSelf->ValType = HB_EV_DATE;
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
}
else if( HB_SUPPORT_HARBOUR &&
( pLeft->value.asNum.NumType == HB_ET_LONG ?
pLeft->value.asNum.val.l == 0 :
pLeft->value.asNum.val.d == 0 ) )
{
/* NOTE: This will not generate a runtime error if incompatible
* data type is used
*/
pSelf->ExprType = HB_ET_NONE; /* suppress deletion of operator components */
HB_COMP_EXPR_FREE( pSelf );
pSelf = pRight;
HB_COMP_EXPR_FREE( pLeft );
}
else
{
/* TODO: Check for incompatible types e.g. "txt" + 3
*/
}
}
else if( pRight->ExprType == HB_ET_NUMERIC )
{
if( pLeft->ExprType == HB_ET_DATE )
{
if( pRight->value.asNum.NumType == HB_ET_LONG )
pSelf->value.asNum.val.l = pLeft->value.asNum.val.l + pRight->value.asNum.val.l;
else
pSelf->value.asNum.val.l = pLeft->value.asNum.val.l + ( HB_LONG ) pRight->value.asNum.val.d;
pSelf->ExprType = HB_ET_DATE;
pSelf->ValType = HB_EV_DATE;
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
}
else if( HB_SUPPORT_HARBOUR &&
( pRight->value.asNum.NumType == HB_ET_LONG ?
pRight->value.asNum.val.l == 0 :
pRight->value.asNum.val.d == 0 ) )
{
/* NOTE: This will not generate a runtime error if incompatible
* data type is used
*/
pSelf->ExprType = HB_ET_NONE; /* suppress deletion of operator components */
HB_COMP_EXPR_FREE( pSelf );
pSelf = pLeft;
HB_COMP_EXPR_FREE( pRight );
}
else
{
/* TODO: Check for incompatible types e.g. "txt" + 3
*/
}
}
else if( pLeft->ExprType == HB_ET_STRING && pRight->ExprType == HB_ET_STRING )
{
if( pRight->ulLength == 0 )
{
pSelf->ExprType = HB_ET_NONE; /* suppress deletion of operator components */
HB_COMP_EXPR_FREE( pSelf );
pSelf = pLeft;
HB_COMP_EXPR_FREE( pRight );
}
else if( pLeft->ulLength == 0 )
{
pSelf->ExprType = HB_ET_NONE; /* suppress deletion of operator components */
HB_COMP_EXPR_FREE( pSelf );
pSelf = pRight;
HB_COMP_EXPR_FREE( pLeft );
}
else
{
/* Do not reduce strings with the macro operator '&'
*/
char * szText = pLeft->value.asString.string;
ULONG ulLen = pLeft->ulLength;
BOOL fReduce = TRUE;
while( ulLen-- )
{
if( *szText++ == '&' )
{
char ch = ulLen ? *szText : *pRight->value.asString.string;
if( ( ch >= 'A' && ch <= 'Z' ) ||
( ch >= 'a' && ch <= 'z' ) || ch == '_' ||
! HB_SUPPORT_HARBOUR )
{
fReduce = FALSE;
break;
}
}
}
if( fReduce )
{
pSelf->ExprType = HB_ET_NONE; /* suppress deletion of operator components */
HB_COMP_EXPR_FREE( pSelf );
pSelf = hb_compExprReducePlusStrings( pLeft, pRight, HB_COMP_PARAM );
}
}
}
else
{
/* TODO: Check for incompatible types e.g. "txt" + 3
*/
}
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceIN( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
if( pSelf->value.asOperator.pLeft->ExprType == pSelf->value.asOperator.pRight->ExprType &&
pSelf->value.asOperator.pLeft->ExprType == HB_ET_STRING )
{
/* Both arguments are literal strings
*/
BOOL bResult;
/* NOTE: CA-Cl*pper has a bug where the $ operator returns .T.
* when an empty string is searched [vszakats]
* But this bug exists only in compiler optimizer and
* macro compiler does not have optimizer [druzus]
*/
if( pSelf->value.asOperator.pLeft->ulLength == 0 )
bResult = HB_COMP_PARAM->mode == HB_MODE_COMPILER;
else
bResult = ( hb_strAt( pSelf->value.asOperator.pLeft->value.asString.string, pSelf->value.asOperator.pLeft->ulLength,
pSelf->value.asOperator.pRight->value.asString.string, pSelf->value.asOperator.pRight->ulLength ) != 0 );
/* NOTE:
* "" $ "XXX" = .T.
* "" $ "" = .T.
*/
HB_COMP_EXPR_FREE( pSelf->value.asOperator.pLeft );
HB_COMP_EXPR_FREE( pSelf->value.asOperator.pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
/* TODO: add checking for incompatible types
*/
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceNE( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pLeft, pRight;
pLeft = pSelf->value.asOperator.pLeft;
pRight = pSelf->value.asOperator.pRight;
if( pLeft->ExprType == pRight->ExprType )
{
switch( pLeft->ExprType )
{
case HB_ET_LOGICAL:
{
/* .F. != .T. = .T.
* .T. != .T. = .F.
* .F. != .F. = .F.
* .T. != .F. = .T.
*/
BOOL bResult = ( pLeft->value.asLogical != pRight->value.asLogical );
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
break;
case HB_ET_STRING:
/* NOTE: the result depends on SET EXACT setting then it
* cannot be optimized except the case when NULL string are
* compared - "" != "" is always FALSE regardless of EXACT
* setting
*/
if( ( pLeft->ulLength | pRight->ulLength ) == 0 )
{
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = FALSE;
/* NOTE: COMPATIBILITY: Clipper doesn't optimize this */
}
break;
case HB_ET_NUMERIC:
{
BOOL bResult;
switch( pLeft->value.asNum.NumType & pRight->value.asNum.NumType )
{
case HB_ET_LONG:
bResult = ( pLeft->value.asNum.val.l != pRight->value.asNum.val.l );
break;
case HB_ET_DOUBLE:
bResult = ( pLeft->value.asNum.val.d != pRight->value.asNum.val.d );
break;
default:
{
if( pLeft->value.asNum.NumType == HB_ET_LONG )
bResult = ( pLeft->value.asNum.val.l != pRight->value.asNum.val.d );
else
bResult = ( pLeft->value.asNum.val.d != pRight->value.asNum.val.l );
}
break;
}
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
break;
case HB_ET_NIL:
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = FALSE;
break;
}
}
else if( ( pLeft->ExprType == HB_ET_NIL &&
( pRight->ExprType == HB_ET_NUMERIC ||
pRight->ExprType == HB_ET_LOGICAL ||
pRight->ExprType == HB_ET_DATE ||
pRight->ExprType == HB_ET_STRING ||
pRight->ExprType == HB_ET_CODEBLOCK ||
pRight->ExprType == HB_ET_ARRAY ||
pRight->ExprType == HB_ET_FUNREF ) ) ||
( pRight->ExprType == HB_ET_NIL &&
( pLeft->ExprType == HB_ET_NUMERIC ||
pLeft->ExprType == HB_ET_LOGICAL ||
pLeft->ExprType == HB_ET_DATE ||
pLeft->ExprType == HB_ET_STRING ||
pLeft->ExprType == HB_ET_CODEBLOCK ||
pLeft->ExprType == HB_ET_ARRAY ||
pLeft->ExprType == HB_ET_FUNREF ) ) )
{
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = TRUE;
}
/* TODO: add checking of incompatible types
else
{
}
*/
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceGE( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pLeft, pRight;
pLeft = pSelf->value.asOperator.pLeft;
pRight = pSelf->value.asOperator.pRight;
if( pLeft->ExprType == pRight->ExprType )
switch( pLeft->ExprType )
{
case HB_ET_LOGICAL:
{
/* .T. >= .F. = .T.
* .T. >= .T. = .T.
* .F. >= .F. = .T.
* .F. >= .T. = .f.
*/
BOOL bResult = ! ( ! pLeft->value.asLogical && pRight->value.asLogical );
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
break;
case HB_ET_NUMERIC:
{
BOOL bResult;
switch( pLeft->value.asNum.NumType & pRight->value.asNum.NumType )
{
case HB_ET_LONG:
bResult = ( pLeft->value.asNum.val.l >= pRight->value.asNum.val.l );
break;
case HB_ET_DOUBLE:
bResult = ( pLeft->value.asNum.val.d >= pRight->value.asNum.val.d );
break;
default:
{
if( pLeft->value.asNum.NumType == HB_ET_LONG )
bResult = ( pLeft->value.asNum.val.l >= pRight->value.asNum.val.d );
else
bResult = ( pLeft->value.asNum.val.d >= pRight->value.asNum.val.l );
}
break;
}
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
break;
}
/* TODO: add checking of incompatible types
else
{
}
*/
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceLE( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pLeft, pRight;
pLeft = pSelf->value.asOperator.pLeft;
pRight = pSelf->value.asOperator.pRight;
if( pLeft->ExprType == pRight->ExprType )
switch( pLeft->ExprType )
{
case HB_ET_LOGICAL:
{
/* .T. <= .F. = .F.
* .T. <= .T. = .T.
* .F. <= .F. = .T.
* .F. <= .T. = .T.
*/
BOOL bResult = ! ( pLeft->value.asLogical && ! pRight->value.asLogical );
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
break;
case HB_ET_NUMERIC:
{
BOOL bResult;
switch( pLeft->value.asNum.NumType & pRight->value.asNum.NumType )
{
case HB_ET_LONG:
bResult = ( pLeft->value.asNum.val.l <= pRight->value.asNum.val.l );
break;
case HB_ET_DOUBLE:
bResult = ( pLeft->value.asNum.val.d <= pRight->value.asNum.val.d );
break;
default:
{
if( pLeft->value.asNum.NumType == HB_ET_LONG )
bResult = ( pLeft->value.asNum.val.l <= pRight->value.asNum.val.d );
else
bResult = ( pLeft->value.asNum.val.d <= pRight->value.asNum.val.l );
}
break;
}
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
break;
}
/* TODO: add checking of incompatible types
else
{
}
*/
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceGT( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pLeft, pRight;
pLeft = pSelf->value.asOperator.pLeft;
pRight = pSelf->value.asOperator.pRight;
if( pLeft->ExprType == pRight->ExprType )
switch( pLeft->ExprType )
{
case HB_ET_LOGICAL:
{
/* .T. > .F. = .T.
* .T. > .T. = .F.
* .F. > .F. = .F.
* .F. > .T. = .F.
*/
BOOL bResult = ( pLeft->value.asLogical && ! pRight->value.asLogical );
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
break;
case HB_ET_NUMERIC:
{
BOOL bResult;
switch( pLeft->value.asNum.NumType & pRight->value.asNum.NumType )
{
case HB_ET_LONG:
bResult = ( pLeft->value.asNum.val.l > pRight->value.asNum.val.l );
break;
case HB_ET_DOUBLE:
bResult = ( pLeft->value.asNum.val.d > pRight->value.asNum.val.d );
break;
default:
{
if( pLeft->value.asNum.NumType == HB_ET_LONG )
bResult = ( pLeft->value.asNum.val.l > pRight->value.asNum.val.d );
else
bResult = ( pLeft->value.asNum.val.d > pRight->value.asNum.val.l );
}
break;
}
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
break;
}
/* TODO: add checking of incompatible types
else
{
}
*/
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceLT( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pLeft, pRight;
pLeft = pSelf->value.asOperator.pLeft;
pRight = pSelf->value.asOperator.pRight;
if( pLeft->ExprType == pRight->ExprType )
switch( pLeft->ExprType )
{
case HB_ET_LOGICAL:
{
/* .F. < .T. = .T.
* .T. < .T. = .F.
* .F. < .F. = .F.
* .T. < .F. = .F.
*/
BOOL bResult = ( ! pLeft->value.asLogical && pRight->value.asLogical );
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
break;
case HB_ET_NUMERIC:
{
BOOL bResult;
switch( pLeft->value.asNum.NumType & pRight->value.asNum.NumType )
{
case HB_ET_LONG:
bResult = ( pLeft->value.asNum.val.l < pRight->value.asNum.val.l );
break;
case HB_ET_DOUBLE:
bResult = ( pLeft->value.asNum.val.d < pRight->value.asNum.val.d );
break;
default:
{
if( pLeft->value.asNum.NumType == HB_ET_LONG )
bResult = ( pLeft->value.asNum.val.l < pRight->value.asNum.val.d );
else
bResult = ( pLeft->value.asNum.val.d < pRight->value.asNum.val.l );
}
break;
}
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
break;
default:
break;
}
/* TODO: add checking of incompatible types
else
{
}
*/
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceEQ( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pLeft, pRight;
pLeft = pSelf->value.asOperator.pLeft;
pRight = pSelf->value.asOperator.pRight;
if( pLeft->ExprType == pRight->ExprType )
{
switch( pLeft->ExprType )
{
case HB_ET_LOGICAL:
{
BOOL bResult = ( pLeft->value.asLogical == pRight->value.asLogical );
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
break;
case HB_ET_STRING:
/* NOTE: when not exact comparison (==) is used
* the result depends on SET EXACT setting then it
* cannot be optimized except the case when NULL string are
* compared - "" = "" is always TRUE regardless of EXACT
* setting
*/
if( pSelf->ExprType == HB_EO_EQ ||
( pLeft->ulLength | pRight->ulLength ) == 0 )
{
BOOL bResult = pLeft->ulLength == pRight->ulLength &&
memcmp( pLeft->value.asString.string,
pRight->value.asString.string,
pLeft->ulLength ) == 0;
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
break;
case HB_ET_NUMERIC:
{
BOOL bResult;
switch( pLeft->value.asNum.NumType & pRight->value.asNum.NumType )
{
case HB_ET_LONG:
bResult = ( pLeft->value.asNum.val.l == pRight->value.asNum.val.l );
break;
case HB_ET_DOUBLE:
bResult = ( pLeft->value.asNum.val.d == pRight->value.asNum.val.d );
break;
default:
if( pLeft->value.asNum.NumType == HB_ET_LONG )
bResult = ( pLeft->value.asNum.val.l == pRight->value.asNum.val.d );
else
bResult = ( pLeft->value.asNum.val.d == pRight->value.asNum.val.l );
break;
}
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
break;
case HB_ET_NIL:
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = TRUE;
break;
}
}
else if( ( pLeft->ExprType == HB_ET_NIL &&
( pRight->ExprType == HB_ET_NUMERIC ||
pRight->ExprType == HB_ET_LOGICAL ||
pRight->ExprType == HB_ET_DATE ||
pRight->ExprType == HB_ET_STRING ||
pRight->ExprType == HB_ET_CODEBLOCK ||
pRight->ExprType == HB_ET_ARRAY ||
pRight->ExprType == HB_ET_FUNREF ) ) ||
( pRight->ExprType == HB_ET_NIL &&
( pLeft->ExprType == HB_ET_NUMERIC ||
pLeft->ExprType == HB_ET_LOGICAL ||
pLeft->ExprType == HB_ET_DATE ||
pLeft->ExprType == HB_ET_STRING ||
pLeft->ExprType == HB_ET_CODEBLOCK ||
pLeft->ExprType == HB_ET_ARRAY ||
pLeft->ExprType == HB_ET_FUNREF ) ) )
{
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = FALSE;
}
/* TODO: add checking of incompatible types
else
{
}
*/
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceAnd( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pLeft, pRight;
pLeft = pSelf->value.asOperator.pLeft;
pRight = pSelf->value.asOperator.pRight;
if( pLeft->ExprType == HB_ET_LOGICAL && pRight->ExprType == HB_ET_LOGICAL )
{
BOOL bResult;
bResult = pLeft->value.asLogical && pRight->value.asLogical;
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
else if( pLeft->ExprType == HB_ET_LOGICAL &&
HB_COMP_ISSUPPORTED( HB_COMPFLAG_SHORTCUTS ) )
{
if( pLeft->value.asLogical )
{
/* .T. .AND. expr => expr
*/
HB_COMP_EXPR_FREE( pLeft );
pSelf->ExprType = HB_ET_NONE; /* don't delete expression components */
HB_COMP_EXPR_FREE( pSelf );
pSelf = pRight;
}
else
{
/* .F. .AND. expr => .F.
*/
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight ); /* discard expression */
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = FALSE;
}
}
else if( pRight->ExprType == HB_ET_LOGICAL &&
HB_COMP_ISSUPPORTED( HB_COMPFLAG_SHORTCUTS ) )
{
if( pRight->value.asLogical )
{
/* expr .AND. .T. => expr
*/
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_NONE; /* don't delete expression components */
HB_COMP_EXPR_FREE( pSelf );
pSelf = pLeft;
}
else
{
/* expr .AND. .F. => .F.
*/
HB_COMP_EXPR_FREE( pLeft ); /* discard expression */
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = FALSE;
}
}
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceOr( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pLeft, pRight;
pLeft = pSelf->value.asOperator.pLeft;
pRight = pSelf->value.asOperator.pRight;
if( pLeft->ExprType == HB_ET_LOGICAL && pRight->ExprType == HB_ET_LOGICAL )
{
BOOL bResult;
bResult = pLeft->value.asLogical || pRight->value.asLogical;
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
else if( pLeft->ExprType == HB_ET_LOGICAL &&
HB_COMP_ISSUPPORTED( HB_COMPFLAG_SHORTCUTS ) )
{
if( pLeft->value.asLogical )
{
/* .T. .OR. expr => .T.
*/
HB_COMP_EXPR_FREE( pLeft );
HB_COMP_EXPR_FREE( pRight ); /* discard expression */
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = TRUE;
}
else
{
/* .F. .OR. expr => expr
*/
HB_COMP_EXPR_FREE( pLeft );
pSelf->ExprType = HB_ET_NONE; /* don't delete expression components */
HB_COMP_EXPR_FREE( pSelf );
pSelf = pRight;
}
}
else if( pRight->ExprType == HB_ET_LOGICAL &&
HB_COMP_ISSUPPORTED( HB_COMPFLAG_SHORTCUTS ) )
{
if( pRight->value.asLogical )
{
/* expr .OR. .T. => .T.
*/
HB_COMP_EXPR_FREE( pLeft ); /* discard expression */
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = TRUE;
}
else
{
/* expr .OR. .F. => expr
*/
HB_COMP_EXPR_FREE( pRight );
pSelf->ExprType = HB_ET_NONE; /* don't delete expression components */
HB_COMP_EXPR_FREE( pSelf );
pSelf = pLeft;
}
}
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceIIF( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pExpr;
/* get conditional expression */
pExpr = pSelf->value.asList.pExprList;
if( pExpr->ExprType == HB_ET_LIST )
{
HB_EXPR_PTR pNext = pExpr->pNext;
pExpr = hb_compExprListStrip( pExpr, HB_COMP_PARAM );
pExpr->pNext = pNext;
pSelf->value.asList.pExprList = pExpr;
}
if( pExpr->ExprType == HB_ET_LOGICAL )
{
/* the condition was reduced to a logical value: .T. or .F.
*/
if( pExpr->value.asLogical )
{
/* .T. was specified
*/
pExpr = pExpr->pNext; /* skip to TRUE expression */
/* delete condition - it is no longer needed
*/
HB_COMP_EXPR_FREE( pSelf->value.asList.pExprList );
/* assign NULL to a start of expressions list to suppress
* deletion of expression's components - we are deleting them
* here
*/
pSelf->value.asList.pExprList = NULL;
HB_COMP_EXPR_FREE( pSelf );
/* store the TRUE expression as a result of reduction
*/
pSelf = pExpr;
pExpr = pExpr->pNext; /* skip to FALSE expression */
HB_COMP_EXPR_FREE( pExpr ); /* delete FALSE expr */
pSelf->pNext = NULL;
}
else
{
/* .F. was specified
*/
pExpr = pExpr->pNext; /* skip to TRUE expression */
/* delete condition - it is no longer needed
*/
HB_COMP_EXPR_FREE( pSelf->value.asList.pExprList );
/* assign NULL to a start of expressions list to suppress
* deletion of expression's components - we are deleting them
* here
*/
pSelf->value.asList.pExprList = NULL;
HB_COMP_EXPR_FREE( pSelf );
/* store the FALSE expression as a result of reduction
*/
pSelf = pExpr->pNext;
HB_COMP_EXPR_FREE( pExpr ); /* delete TRUE expr */
pSelf->pNext = NULL;
}
/* this will cause warning when IIF is used as statement */
/*
if( pSelf->ExprType == HB_ET_NONE )
{
pSelf->ExprType = HB_ET_NIL;
pSelf->ValType = HB_EV_NIL;
}
*/
}
/* check if valid expression is passed
*/
else if( pExpr->ExprType == HB_ET_NIL ||
pExpr->ExprType == HB_ET_NUMERIC ||
pExpr->ExprType == HB_ET_DATE ||
pExpr->ExprType == HB_ET_STRING ||
pExpr->ExprType == HB_ET_CODEBLOCK ||
pExpr->ExprType == HB_ET_ARRAY ||
pExpr->ExprType == HB_ET_VARREF ||
pExpr->ExprType == HB_ET_REFERENCE ||
pExpr->ExprType == HB_ET_FUNREF )
{
HB_COMP_ERROR_TYPE( pExpr );
}
return pSelf;
}
/* replace the list containing a single expression with a simple expression
* - strips parenthesis
* ( EXPR ) -> EXPR
*/
HB_EXPR_PTR hb_compExprListStrip( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
while( pSelf->ExprType == HB_ET_LIST &&
pSelf->value.asList.pExprList->ExprType <= HB_ET_VARIABLE &&
hb_compExprListLen( pSelf ) == 1 )
{
/* replace the list with a simple expression
* ( EXPR ) -> EXPR
*/
HB_EXPR_PTR pExpr = pSelf;
pSelf = pSelf->value.asList.pExprList;
pExpr->value.asList.pExprList = NULL;
HB_COMP_EXPR_FREE( pExpr );
}
return pSelf;
}
BOOL hb_compExprReduceAT( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pParms = pSelf->value.asFunCall.pParms;
HB_EXPR_PTR pSub = pParms->value.asList.pExprList;
HB_EXPR_PTR pText = pSub->pNext;
HB_EXPR_PTR pReduced;
if( pSub->ExprType == HB_ET_STRING && pText->ExprType == HB_ET_STRING )
{
/* This is CA-Clipper compiler optimizer behavior,
* macro compiler does not have optimizer [druzus]
*/
if( pSub->ulLength == 0 )
{
pReduced = hb_compExprNewLong( HB_COMP_PARAM->mode == HB_MODE_COMPILER ? 1 : 0, HB_COMP_PARAM );
}
else
{
pReduced = hb_compExprNewLong( hb_strAt( pSub->value.asString.string,
pSub->ulLength, pText->value.asString.string,
pText->ulLength ), HB_COMP_PARAM );
}
HB_COMP_EXPR_FREE( pSelf->value.asFunCall.pFunName );
HB_COMP_EXPR_FREE( pSelf->value.asFunCall.pParms );
memcpy( pSelf, pReduced, sizeof( HB_EXPR ) );
HB_COMP_EXPR_CLEAR( pReduced );
return TRUE;
}
else
return FALSE;
}
BOOL hb_compExprReduceCHR( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pParms = pSelf->value.asFunCall.pParms;
HB_EXPR_PTR pArg = pParms->value.asList.pExprList;
/* try to change it into a string */
if( pArg->ExprType == HB_ET_NUMERIC )
{
/* NOTE: CA-Cl*pper's compiler optimizer will be wrong for those
* CHR() cases where the passed parameter is a constant which
* can be divided by 256 but it's not zero, in this case it
* will return an empty string instead of a Chr(0). [vszakats]
* But this bug exist only in compiler and macro compiler does
* not have optimizer [druzus]
*/
HB_EXPR_PTR pExpr = HB_COMP_EXPR_NEW( HB_ET_STRING );
pExpr->ValType = HB_EV_STRING;
if( pArg->value.asNum.NumType == HB_ET_LONG )
{
if( HB_COMP_PARAM->mode == HB_MODE_COMPILER &&
( pArg->value.asNum.val.l & 0xff ) == 0 &&
pArg->value.asNum.val.l != 0 )
{
pExpr->value.asString.string = "";
pExpr->value.asString.dealloc = FALSE;
pExpr->ulLength = 0;
}
else
{
pExpr->value.asString.string = ( char * ) hb_szAscii[ ( int ) pArg->value.asNum.val.l & 0xff ];
pExpr->value.asString.dealloc = FALSE;
pExpr->ulLength = 1;
}
}
else
{
pExpr->value.asString.string = ( char * ) hb_szAscii[ ( unsigned int ) pArg->value.asNum.val.d & 0xff ];
pExpr->value.asString.dealloc = FALSE;
pExpr->ulLength = 1;
}
HB_COMP_EXPR_FREE( pParms );
HB_COMP_EXPR_FREE( pSelf->value.asFunCall.pFunName );
memcpy( pSelf, pExpr, sizeof( HB_EXPR ) );
HB_COMP_EXPR_CLEAR( pExpr );
return TRUE;
}
return FALSE;
}
BOOL hb_compExprReduceLEN( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pParms = pSelf->value.asFunCall.pParms;
HB_EXPR_PTR pArg = pParms->value.asList.pExprList;
if( pArg->ExprType == HB_ET_STRING || pArg->ExprType == HB_ET_ARRAY )
{
HB_EXPR_PTR pExpr = hb_compExprNewLong( pArg->ulLength, HB_COMP_PARAM );
HB_COMP_EXPR_FREE( pParms );
HB_COMP_EXPR_FREE( pSelf->value.asFunCall.pFunName );
memcpy( pSelf, pExpr, sizeof( HB_EXPR ) );
HB_COMP_EXPR_CLEAR( pExpr );
return TRUE;
}
return FALSE;
}
BOOL hb_compExprReduceASC( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pParms = pSelf->value.asFunCall.pParms;
HB_EXPR_PTR pArg = pParms->value.asList.pExprList;
if( pArg->ExprType == HB_ET_STRING )
{
HB_EXPR_PTR pExpr = hb_compExprNewLong(
( UCHAR ) pArg->value.asString.string[0], HB_COMP_PARAM );
HB_COMP_EXPR_FREE( pParms );
HB_COMP_EXPR_FREE( pSelf->value.asFunCall.pFunName );
memcpy( pSelf, pExpr, sizeof( HB_EXPR ) );
HB_COMP_EXPR_CLEAR( pExpr );
return TRUE;
}
return FALSE;
}
BOOL hb_compExprReduceSTOD( HB_EXPR_PTR pSelf, USHORT usCount, HB_COMP_DECL )
{
if( usCount == 1 )
{
HB_EXPR_PTR pParms = pSelf->value.asFunCall.pParms;
HB_EXPR_PTR pArg = pParms->value.asList.pExprList;
if( pArg->ExprType == HB_ET_STRING && ( pArg->ulLength == 8 || pArg->ulLength == 0 ) )
{
HB_EXPR_PTR pExpr = hb_compExprNewDate( pArg->ulLength == 0 ? 0 :
hb_dateEncStr( pArg->value.asString.string ),
HB_COMP_PARAM );
HB_COMP_EXPR_FREE( pParms );
HB_COMP_EXPR_FREE( pSelf->value.asFunCall.pFunName );
memcpy( pSelf, pExpr, sizeof( HB_EXPR ) );
HB_COMP_EXPR_CLEAR( pExpr );
return TRUE;
}
}
else
{
HB_EXPR_PTR pExpr = hb_compExprNewDate( 0, HB_COMP_PARAM );
HB_COMP_EXPR_FREE( pSelf->value.asFunCall.pParms );
HB_COMP_EXPR_FREE( pSelf->value.asFunCall.pFunName );
memcpy( pSelf, pExpr, sizeof( HB_EXPR ) );
HB_COMP_EXPR_CLEAR( pExpr );
return TRUE;
}
return FALSE;
}
BOOL hb_compExprReduceCTOD( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pParms = pSelf->value.asFunCall.pParms;
HB_EXPR_PTR pArg = pParms->value.asList.pExprList;
if( pArg->ExprType == HB_ET_STRING && pArg->ulLength == 0 )
{
HB_EXPR_PTR pExpr = hb_compExprNewDate( 0, HB_COMP_PARAM );
HB_COMP_EXPR_FREE( pParms );
HB_COMP_EXPR_FREE( pSelf->value.asFunCall.pFunName );
memcpy( pSelf, pExpr, sizeof( HB_EXPR ) );
HB_COMP_EXPR_CLEAR( pExpr );
return TRUE;
}
return FALSE;
}
BOOL hb_compExprReduceUPPER( HB_EXPR_PTR pSelf, HB_COMP_DECL )
{
HB_EXPR_PTR pParms = pSelf->value.asFunCall.pParms;
HB_EXPR_PTR pArg = pParms->value.asList.pExprList;
if( pArg->ExprType == HB_ET_STRING )
{
ULONG ulLen = pArg->ulLength;
BOOL fLower = FALSE;
if( ulLen )
{
char * szValue = pArg->value.asString.string;
do
{
char c = * szValue++;
if( c >= 'a' && c <= 'z' )
fLower = TRUE;
else if( !( ( c >= 'A' && c <= 'Z' ) ||
( c >= '0' && c <= '9' ) || c == ' ' ) )
break;
}
while( --ulLen );
}
if( ulLen == 0 )
{
HB_EXPR_PTR pExpr;
char * szValue;
BOOL fDealloc;
if( fLower )
{
if( pArg->ulLength == 1 )
{
szValue = ( char * ) hb_szAscii[ toupper( (unsigned char)
pArg->value.asString.string[ 0 ] ) ];
fDealloc = FALSE;
}
else
{
if( pArg->value.asString.dealloc )
{
szValue = pArg->value.asString.string;
pArg->value.asString.dealloc = FALSE;
fDealloc = TRUE;
}
else
{
szValue = ( char * ) hb_xgrab( pArg->ulLength + 1 );
memcpy( szValue, pArg->value.asString.string, pArg->ulLength + 1 );
fDealloc = TRUE;
}
do
szValue[ ulLen ] = toupper( (unsigned char) szValue[ ulLen ] );
while( ++ulLen < pArg->ulLength );
}
}
else
{
szValue = pArg->value.asString.string;
fDealloc = pArg->value.asString.dealloc;
pArg->value.asString.dealloc = FALSE;
}
pExpr = HB_COMP_EXPR_NEW( HB_ET_STRING );
pExpr->ValType = HB_EV_STRING;
pExpr->value.asString.string = szValue;
pExpr->value.asString.dealloc = fDealloc;
pExpr->ulLength = pArg->ulLength;
HB_COMP_EXPR_FREE( pParms );
HB_COMP_EXPR_FREE( pSelf->value.asFunCall.pFunName );
memcpy( pSelf, pExpr, sizeof( HB_EXPR ) );
HB_COMP_EXPR_CLEAR( pExpr );
return TRUE;
}
}
return FALSE;
}