Files
harbour-core/harbour/source/common/expropt2.c
Przemyslaw Czerpak ef0883bf02 2004-10-11 21:40 UTC+0100 Przemyslaw Czerpak (druzus/at/priv.onet.pl)
* harbour/Makefile
  + harbour/make_bsd.sh
  + harbour/make_drw.sh
  * harbour/make_tgz.sh
  + harbour/bin/hb-func.sh
  * harbour/bin/pack_src.sh
  + harbour/bin/postinst.bat
  + harbour/bin/postinst.sh
  * harbour/config/dir.cf
  * harbour/config/bsd/gcc.cf
  * harbour/config/bsd/global.cf
  + harbour/config/darwin/dir.cf
  + harbour/config/darwin/gcc.cf
  + harbour/config/darwin/global.cf
  + harbour/config/darwin/install.cf
  * harbour/config/dos/dir.cf
  * harbour/config/dos/global.cf
  * harbour/config/dos/install.cf
  * harbour/config/dos/owatcom.cf
  * harbour/config/dos/watcom.cf
  * harbour/config/linux/gcc.cf
  * harbour/config/linux/global.cf
  * harbour/contrib/Makefile
  * harbour/contrib/dot/pp_harb.ch
  * harbour/contrib/libct/Makefile
  * harbour/contrib/libct/bit1.c
  * harbour/contrib/libct/bit2.c
  * harbour/contrib/libct/bit3.c
  * harbour/contrib/libct/files.c
  * harbour/contrib/libct/ftoc.c
  - harbour/contrib/libct/invertwin.prg
  + harbour/contrib/libct/invrtwin.prg
  * harbour/contrib/libct/keyset.c
  * harbour/contrib/libct/makefile.bc
  * harbour/contrib/libmisc/dates2.c
  * harbour/contrib/rdd_ads/ads1.c
  * harbour/contrib/rdd_ads/adsfunc.c
  * harbour/contrib/samples/date.c
  * harbour/include/dbinfo.ch
  * harbour/include/hbapi.h
  * harbour/include/hbapicdp.h
  * harbour/include/hbapifs.h
  * harbour/include/hbapigt.h
  * harbour/include/hbapiitm.h
  * harbour/include/hbcomp.h
  * harbour/include/hbdate.h
  * harbour/include/hbdbf.h
  * harbour/include/hbdbferr.h
  * harbour/include/hbdefs.h
  * harbour/include/hbexprb.c
  * harbour/include/hbexprc.c
  * harbour/include/hbexprop.h
  * harbour/include/hbmacro.h
  * harbour/include/hbmath.h
  * harbour/include/hbpcode.h
  * harbour/include/hbrddcdx.h
  * harbour/include/hbrdddbf.h
  * harbour/include/hbrdddbt.h
  * harbour/include/hbrddfpt.h
  * harbour/include/hbrddntx.h
  * harbour/include/hbset.h
  * harbour/include/hbsetup.h
  * harbour/include/set.ch
  * harbour/source/common/Makefile
  * harbour/source/common/expropt1.c
  * harbour/source/common/expropt2.c
  - harbour/source/common/hbffind.c
  * harbour/source/common/hbfsapi.c
  * harbour/source/common/hbstr.c
  * harbour/source/common/hbver.c
  + harbour/source/common/hbverdsp.c
  * harbour/source/compiler/genc.c
  * harbour/source/compiler/gencli.c
  * harbour/source/compiler/harbour.c
  * harbour/source/compiler/harbour.l
  * harbour/source/compiler/harbour.slx
  * harbour/source/compiler/harbour.sly
  * harbour/source/compiler/harbour.y
  * harbour/source/compiler/hbfix.c
  * harbour/source/compiler/hbpcode.c
  * harbour/source/compiler/hbusage.c
  * harbour/source/compiler/simplex.c
  * harbour/source/macro/macro.l
  * harbour/source/macro/macro.slx
  * harbour/source/macro/macro.y
  * harbour/source/pp/ppcore.c
  * harbour/source/rdd/dbcmd.c
  * harbour/source/rdd/dbf1.c
  * harbour/source/rdd/dbfcdx/dbfcdx1.c
  - harbour/source/rdd/dbfcdx/dbfcdx1.h
  * harbour/source/rdd/dbffpt/dbffpt1.c
  * harbour/source/rdd/dbfntx/dbfntx1.c
  * harbour/source/rtl/Makefile
  * harbour/source/rtl/abs.c
  * harbour/source/rtl/at.c
  * harbour/source/rtl/datec.c
  * harbour/source/rtl/dates.c
  * harbour/source/rtl/dateshb.c
  * harbour/source/rtl/datesx.c
  * harbour/source/rtl/empty.c
  * harbour/source/rtl/errorapi.c
  * harbour/source/rtl/errorint.c
  * harbour/source/rtl/filesys.c
  * harbour/source/rtl/fstemp.c
  + harbour/source/rtl/hbffind.c
  * harbour/source/rtl/hbrandom.c
  * harbour/source/rtl/idle.c
  * harbour/source/rtl/inkey.c
  * harbour/source/rtl/math.c
  * harbour/source/rtl/minmax.c
  * harbour/source/rtl/pad.c
  * harbour/source/rtl/padc.c
  * harbour/source/rtl/padl.c
  * harbour/source/rtl/padr.c
  * harbour/source/rtl/philes.c
  * harbour/source/rtl/round.c
  * harbour/source/rtl/soundex.c
  * harbour/source/rtl/str.c
  * harbour/source/rtl/strcase.c
  * harbour/source/rtl/strmatch.c
  * harbour/source/rtl/strtran.c
  * harbour/source/rtl/strzero.c
  * harbour/source/rtl/substr.c
  * harbour/source/rtl/val.c
  * harbour/source/rtl/gtcrs/gtcrs.c
  * harbour/source/rtl/gtcrs/kbdcrs.c
  * harbour/source/rtl/gtdos/gtdos.c
  * harbour/source/rtl/gtsln/gtsln.c
  * harbour/source/rtl/gtsln/kbsln.c
  * harbour/source/rtl/gtsln/keytrans.c
  * harbour/source/vm/arrays.c
  * harbour/source/vm/codebloc.c
  * harbour/source/vm/estack.c
  * harbour/source/vm/eval.c
  * harbour/source/vm/extend.c
  * harbour/source/vm/hvm.c
  * harbour/source/vm/itemapi.c
  * harbour/source/vm/macro.c
  * harbour/source/vm/memvars.c
  * harbour/source/vm/runner.c
  * harbour/tests/bldtest/bldtest.c
  * harbour/utils/hbtest/hbtest.prg
  * harbour/utils/hbtest/rt_misc.prg
  * harbour/utils/hbtest/rt_str.prg
   * Sorry but it's too much modification for full description
     cvs diff gives file 785982 bytes length. So I only count the
     main things:
   ! cleand the code (no more warning messages under Linux and GCC and
     DOS OpenWatcom) - some of them were real bugs
   ! cleaned all endian dependend code I've found - now Harbour can be
     compiled on LITLE and BIG endian machines - for some other like
     PDP ENDIAN it's enough to define proper macros in hbdefs.h
   + added macros for to get/put values in chosen byte order:
         HB_GET_LE_[U]INT{16,24,32,64}( pPtr )
         HB_GET_BE_[U]INT{16,24,32,64}( pPtr )
         HB_PUT_LE_[U]INT{16,24,32,64}( pPtr, nVal )
         HB_PUT_BE_[U]INT{16,24,32,64}( pPtr, nVal )
   + added macro HB_CAST_BYTE_NUMBERS_OFF which disables casting in
     HB_{GET|PUT}_{LE|BE}_* macros - it's necessary for some platforms
     like ALPHA DEC.
   ! cleaned the code for 64bit machines
   * changed all parameters in hb_date* functions (day, month, year, week)
     from LONG to int - it doesn't change binary compatibility for 32bit
     machines but can cause troubles with compiling the old source
   + changed HB_IT_LONG type to HB_LONG which is mapped to long long
     by default for 32 bit machines.
   + change HB_IT_INTEGER to be real 'int' C type not 'short int'
   + added HB_IS_NUMINT() macro
   + added hb_parnll, hb_stornll, hb_retnll, hbretnlllen, hb_itemPutNLL,
     hb_itemPutNLLLen, hb_itemGetNLL which operates on LONGLONG
   + added hb_parnint, hb_stornint, hb_retnint, hb_retnintlen,
     hb_itemPutNInt, hb_itemPutNIntLen, hb_itemGetNInt which operates on
     HB_LONG
   + added HB_PUSHLONGLONG pcode
   + changed compiler and optimizer to use HB_LONG numbers and reduce
     conversion from to double which may damage the 64bit number.
   + common functions for string to number conversions for compiler, RTL
     and RDD to reduce problems with differ FL values for the same number:
     hb_compStrToNum(), hb_valStrnToNum(), hb_strToNum(), hb_strnToNum()
   + common function hb_numRoun() which uses exactly the same algorithms
     as string to number conversion for the same reason - please keep
     this functions together.
   + hack inside hb_numRound() similar to the one used by CL5.3
   + hb_numInt() which uses uses the same hack as hb_numRound()
   + rewritten number to string conversion
   + some new string manipulation functions hb_strncpy(), hb_strncat(), ...
     They works differ the the C one - always set 0 at the end, the buffer
     has to be n+1 bytes length, the n is total size of buffer not the
     left free space.
   ! cleaned some code which operates on ASCIIZ string to avoid potential
     buffer overflow
   + updated RDD code - it's the first part - in few days I plan to change
     workarea structure in both projects - it will break any 3rd party RDDs
     so they have to be updated. I want to add SUPERTABLE into workarea
     to allow creating new RDD on-line.
   ! cleaned the bugs with negating integers - on most machines (like x86)
     the integers are not 0 symmetric - it means that x = -x does not work
     for {INT,LONG,LONGLONG}_MIN (hb_vmNegate, ABS())
   + cleaned error messages to be Clipper compatible.
   + updated build process for .DEB packages - now hb* scripts and shared
     libs are created by standard make install
   * added new .prg #defines: __PLATFORM__<cPlatfrom>,
     __ARCH{16|32|64}BIT__, __LITTLE_ENDIAN__|__BIG_ENDIAN__|__PDP_ENDIAN__
     !!! cPlatfrom can have lower letters (for xHarbour compatibility)
     If you do not like it please change it.
   * others ...
2004-10-11 20:44:30 +00:00

1244 lines
42 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.
*
*/
/* TOFIX: Split the code, since MSC8 can't compile it, even in Huge model. */
/* TODO:
* - Correct post- and pre- operations to correctly handle the following code
* a[ i++ ]++
* Notice: in current implementation (an in Clipper too) 'i++' is evaluated
* two times! This causes that the new value (after incrementation) is
* stored in next element of the array.
*/
/* NOTE: This must be the first definition
* This is a common code shared by macro and standalone compiler
*/
#define HB_MACRO_SUPPORT
#include <math.h>
#include "hbmacro.h"
#include "hbcomp.h"
HB_EXPR_PTR hb_compExprReduceMod( HB_EXPR_PTR pSelf, HB_MACRO_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.lVal )
{
HB_LONG lVal = pLeft->value.asNum.lVal % pRight->value.asNum.lVal;
pSelf->value.asNum.lVal = lVal;
pSelf->value.asNum.bDec = 0;
pSelf->value.asNum.NumType = HB_ET_LONG;
pSelf->ExprType = HB_ET_NUMERIC;
pSelf->ValType = HB_EV_NUMERIC;
hb_compExprFree( pLeft, HB_MACRO_PARAM );
hb_compExprFree( pRight, HB_MACRO_PARAM );
}
}
}
else
{
/* TODO: Check for incompatible types e.g. 3 % "txt"
*/
}
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceDiv( HB_EXPR_PTR pSelf, HB_MACRO_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.lVal )
{
if( pLeft->value.asNum.lVal % pRight->value.asNum.lVal == 0 )
{
/* Return integer results as long */
pSelf->value.asNum.lVal = pLeft->value.asNum.lVal / pRight->value.asNum.lVal;
pSelf->value.asNum.bDec = 0;
pSelf->value.asNum.NumType = HB_ET_LONG;
}
else
{
/* Return non-integer results as double */
pSelf->value.asNum.dVal = ( double ) pLeft->value.asNum.lVal / ( double ) pRight->value.asNum.lVal;
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.dVal != 0.0 )
{
pSelf->value.asNum.dVal = pLeft->value.asNum.dVal / pRight->value.asNum.dVal;
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.lVal )
{
pSelf->value.asNum.dVal = pLeft->value.asNum.dVal / ( double ) pRight->value.asNum.lVal;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = HB_DEFAULT_DECIMALS;
}
}
else
{
if( pRight->value.asNum.dVal != 0.0 )
{
pSelf->value.asNum.dVal = ( double ) pLeft->value.asNum.lVal / pRight->value.asNum.dVal;
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_compExprFree( pLeft, HB_MACRO_PARAM );
hb_compExprFree( pRight, HB_MACRO_PARAM );
}
}
else
{
/* TODO: Check for incompatible types e.g. 3 / "txt"
*/
}
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceMult( HB_EXPR_PTR pSelf, HB_MACRO_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.lVal * ( HB_MAXDBL ) pRight->value.asNum.lVal;
if ( HB_DBL_LIM_LONG( dVal ) )
{
pSelf->value.asNum.lVal = ( HB_LONG ) dVal;
pSelf->value.asNum.bDec = 0;
pSelf->value.asNum.NumType = HB_ET_LONG;
}
else
{
pSelf->value.asNum.dVal = ( 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.dVal = pLeft->value.asNum.dVal * pRight->value.asNum.dVal;
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.dVal = pLeft->value.asNum.dVal * ( double ) pRight->value.asNum.lVal;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = pLeft->value.asNum.bDec;
}
else
{
pSelf->value.asNum.dVal = ( double ) pLeft->value.asNum.lVal * pRight->value.asNum.dVal;
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_compExprFree( pLeft, HB_MACRO_PARAM );
hb_compExprFree( pRight, HB_MACRO_PARAM );
}
else
{
/* TODO: Check for incompatible types e.g. 3 * "txt"
*/
}
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceMinus( HB_EXPR_PTR pSelf, HB_MACRO_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.lVal - ( HB_MAXDBL ) pRight->value.asNum.lVal;
if ( HB_DBL_LIM_LONG( dVal ) )
{
pSelf->value.asNum.lVal = ( HB_LONG ) dVal;
pSelf->value.asNum.bDec = 0;
pSelf->value.asNum.NumType = HB_ET_LONG;
}
else
{
pSelf->value.asNum.dVal = ( 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.dVal = pLeft->value.asNum.dVal - pRight->value.asNum.dVal;
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.dVal = pLeft->value.asNum.dVal - ( double ) pRight->value.asNum.lVal;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = pLeft->value.asNum.bDec;
}
else
{
pSelf->value.asNum.dVal = ( double ) pLeft->value.asNum.lVal - pRight->value.asNum.dVal;
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_compExprFree( pLeft, HB_MACRO_PARAM );
hb_compExprFree( pRight, HB_MACRO_PARAM );
}
else if( pLeft->ExprType == HB_ET_STRING && pRight->ExprType == HB_ET_STRING )
{
/* TODO:
*/
}
else
{
/* TODO: Check for incompatible types e.g. "txt" - 3
*/
}
return pSelf;
}
HB_EXPR_PTR hb_compExprReducePlus( HB_EXPR_PTR pSelf, HB_MACRO_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.lVal + ( HB_MAXDBL ) pRight->value.asNum.lVal;
if ( HB_DBL_LIM_LONG( dVal ) )
{
pSelf->value.asNum.lVal = ( HB_LONG ) dVal;
pSelf->value.asNum.bDec = 0;
pSelf->value.asNum.NumType = HB_ET_LONG;
}
else
{
pSelf->value.asNum.dVal = ( 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.dVal = pLeft->value.asNum.dVal + pRight->value.asNum.dVal;
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.dVal = pLeft->value.asNum.dVal + ( double ) pRight->value.asNum.lVal;
pSelf->value.asNum.bWidth = HB_DEFAULT_WIDTH;
pSelf->value.asNum.bDec = pLeft->value.asNum.bDec;
}
else
{
pSelf->value.asNum.dVal = ( double ) pLeft->value.asNum.lVal + pRight->value.asNum.dVal;
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_compExprFree( pLeft, HB_MACRO_PARAM );
hb_compExprFree( pRight, HB_MACRO_PARAM );
}
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_compExprFree( pSelf, HB_MACRO_PARAM );
pSelf = pLeft;
hb_compExprFree( pRight, HB_MACRO_PARAM );
}
else if( pLeft->ulLength == 0 )
{
pSelf->ExprType = HB_ET_NONE; /* suppress deletion of operator components */
hb_compExprFree( pSelf, HB_MACRO_PARAM );
pSelf = pRight;
hb_compExprFree( pLeft, HB_MACRO_PARAM );
}
else
{
/* Do not reduce strings with the macro operator '&'
*/
if( strchr(pLeft->value.asString.string, '&') == NULL )
{
pSelf->ExprType = HB_ET_NONE; /* suppress deletion of operator components */
hb_compExprFree( pSelf, HB_MACRO_PARAM );
pSelf = hb_compExprReducePlusStrings( pLeft, pRight, HB_MACRO_PARAM );
}
}
}
else
{
/* TODO: Check for incompatible types e.g. "txt" + 3
*/
}
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceIN( HB_EXPR_PTR pSelf, HB_MACRO_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] */
if( pSelf->value.asOperator.pLeft->ulLength == 0 )
bResult = TRUE;
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_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
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_MACRO_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_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
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_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
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.lVal != pRight->value.asNum.lVal );
break;
case HB_ET_DOUBLE:
bResult = ( pLeft->value.asNum.dVal != pRight->value.asNum.dVal );
break;
default:
{
if( pLeft->value.asNum.NumType == HB_ET_LONG )
bResult = ( pLeft->value.asNum.lVal != pRight->value.asNum.dVal );
else
bResult = ( pLeft->value.asNum.dVal != pRight->value.asNum.lVal );
}
break;
}
hb_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
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_compExprReduceGE( HB_EXPR_PTR pSelf, HB_MACRO_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_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
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.lVal >= pRight->value.asNum.lVal );
break;
case HB_ET_DOUBLE:
bResult = ( pLeft->value.asNum.dVal >= pRight->value.asNum.dVal );
break;
default:
{
if( pLeft->value.asNum.NumType == HB_ET_LONG )
bResult = ( pLeft->value.asNum.lVal >= pRight->value.asNum.dVal );
else
bResult = ( pLeft->value.asNum.dVal >= pRight->value.asNum.lVal );
}
break;
}
hb_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
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_MACRO_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_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
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.lVal <= pRight->value.asNum.lVal );
break;
case HB_ET_DOUBLE:
bResult = ( pLeft->value.asNum.dVal <= pRight->value.asNum.dVal );
break;
default:
{
if( pLeft->value.asNum.NumType == HB_ET_LONG )
bResult = ( pLeft->value.asNum.lVal <= pRight->value.asNum.dVal );
else
bResult = ( pLeft->value.asNum.dVal <= pRight->value.asNum.lVal );
}
break;
}
hb_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
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_MACRO_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_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
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.lVal > pRight->value.asNum.lVal );
break;
case HB_ET_DOUBLE:
bResult = ( pLeft->value.asNum.dVal > pRight->value.asNum.dVal );
break;
default:
{
if( pLeft->value.asNum.NumType == HB_ET_LONG )
bResult = ( pLeft->value.asNum.lVal > pRight->value.asNum.dVal );
else
bResult = ( pLeft->value.asNum.dVal > pRight->value.asNum.lVal );
}
break;
}
hb_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
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_MACRO_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_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
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.lVal < pRight->value.asNum.lVal );
break;
case HB_ET_DOUBLE:
bResult = ( pLeft->value.asNum.dVal < pRight->value.asNum.dVal );
break;
default:
{
if( pLeft->value.asNum.NumType == HB_ET_LONG )
bResult = ( pLeft->value.asNum.lVal < pRight->value.asNum.dVal );
else
bResult = ( pLeft->value.asNum.dVal < pRight->value.asNum.lVal );
}
break;
}
hb_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
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_MACRO_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_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
break;
case HB_ET_STRING:
{
BOOL bResult = FALSE;
if( pLeft->ulLength == pRight->ulLength )
bResult = ( strcmp( pLeft->value.asString.string, pRight->value.asString.string ) == 0 );
hb_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
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.lVal == pRight->value.asNum.lVal );
break;
case HB_ET_DOUBLE:
bResult = ( pLeft->value.asNum.dVal == pRight->value.asNum.dVal );
break;
default:
{
if( pLeft->value.asNum.NumType == HB_ET_LONG )
bResult = ( pLeft->value.asNum.lVal == pRight->value.asNum.dVal );
else
bResult = ( pLeft->value.asNum.dVal == pRight->value.asNum.lVal );
}
break;
}
hb_compExprFree( pSelf->value.asOperator.pLeft, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asOperator.pRight, HB_MACRO_PARAM );
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_compExprReduceAnd( HB_EXPR_PTR pSelf, HB_MACRO_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_compExprFree( pLeft, HB_MACRO_PARAM );
hb_compExprFree( pRight, HB_MACRO_PARAM );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
else if( pLeft->ExprType == HB_ET_LOGICAL && hb_comp_bShortCuts )
{
if( pLeft->value.asLogical )
{
/* .T. .AND. expr => expr
*/
hb_compExprFree( pLeft, HB_MACRO_PARAM);
pSelf->ExprType = HB_ET_NONE; /* don't delete expression components */
hb_compExprFree( pSelf, HB_MACRO_PARAM );
pSelf = pRight;
}
else
{
/* .F. .AND. expr => .F.
*/
hb_compExprFree( pLeft, HB_MACRO_PARAM );
hb_compExprFree( pRight, HB_MACRO_PARAM ); /* 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_bShortCuts )
{
if( pRight->value.asLogical )
{
/* expr .AND. .T. => expr
*/
hb_compExprFree( pRight, HB_MACRO_PARAM );
pSelf->ExprType = HB_ET_NONE; /* don't delete expression components */
hb_compExprFree( pSelf, HB_MACRO_PARAM );
pSelf = pLeft;
}
else
{
/* expr .AND. .F. => .F.
*/
hb_compExprFree( pLeft, HB_MACRO_PARAM ); /* discard expression */
hb_compExprFree( pRight, HB_MACRO_PARAM );
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_MACRO_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_compExprFree( pLeft, HB_MACRO_PARAM );
hb_compExprFree( pRight, HB_MACRO_PARAM );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = bResult;
}
else if( pLeft->ExprType == HB_ET_LOGICAL && hb_comp_bShortCuts )
{
if( pLeft->value.asLogical )
{
/* .T. .OR. expr => .T.
*/
hb_compExprFree( pLeft, HB_MACRO_PARAM );
hb_compExprFree( pRight, HB_MACRO_PARAM ); /* discard expression */
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = TRUE;
}
else
{
/* .F. .OR. expr => expr
*/
hb_compExprFree( pLeft, HB_MACRO_PARAM );
pSelf->ExprType = HB_ET_NONE; /* don't delete expression components */
hb_compExprFree( pSelf, HB_MACRO_PARAM );
pSelf = pRight;
}
}
else if( pRight->ExprType == HB_ET_LOGICAL && hb_comp_bShortCuts )
{
if( pRight->value.asLogical )
{
/* expr .OR. .T. => .T.
*/
hb_compExprFree( pLeft, HB_MACRO_PARAM ); /* discard expression */
hb_compExprFree( pRight, HB_MACRO_PARAM );
pSelf->ExprType = HB_ET_LOGICAL;
pSelf->ValType = HB_EV_LOGICAL;
pSelf->value.asLogical = TRUE;
}
else
{
/* expr .OR. .F. => expr
*/
hb_compExprFree( pRight, HB_MACRO_PARAM );
pSelf->ExprType = HB_ET_NONE; /* don't delete expression components */
hb_compExprFree( pSelf, HB_MACRO_PARAM );
pSelf = pLeft;
}
}
return pSelf;
}
HB_EXPR_PTR hb_compExprReduceIIF( HB_EXPR_PTR pSelf, HB_MACRO_DECL )
{
HB_EXPR_PTR pExpr;
pExpr =pSelf->value.asList.pExprList; /* get conditional expression */
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_compExprFree( pSelf->value.asList.pExprList, HB_MACRO_PARAM );
/* 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_compExprFree( pSelf, HB_MACRO_PARAM );
/* store the TRUE expression as a result of reduction
*/
pSelf = pExpr;
pExpr = pExpr->pNext; /* skip to FALSE expression */
hb_compExprFree( pExpr, HB_MACRO_PARAM ); /* 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_compExprFree( pSelf->value.asList.pExprList, HB_MACRO_PARAM );
/* 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_compExprFree( pSelf, HB_MACRO_PARAM );
/* store the FALSE expression as a result of reduction
*/
pSelf = pExpr->pNext;
hb_compExprFree( pExpr, HB_MACRO_PARAM ); /* delete TRUE expr */
pSelf->pNext = NULL;
}
}
/* check if valid expression is passed
*/
else if( ( pExpr->ExprType == HB_ET_DOUBLE ) ||
( pExpr->ExprType == HB_ET_LONG ) ||
( pExpr->ExprType == HB_ET_NIL ) ||
( pExpr->ExprType == HB_ET_STRING ) ||
( pExpr->ExprType == HB_ET_CODEBLOCK ) ||
( pExpr->ExprType == HB_ET_SELF ) ||
( pExpr->ExprType == HB_ET_ARRAY ) )
{
hb_compExprErrorType( pExpr, HB_MACRO_PARAM );
}
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_MACRO_DECL )
{
if( pSelf->ExprType == HB_ET_LIST )
{
ULONG ulCount = hb_compExprListLen( pSelf );
if( ulCount == 1 && pSelf->value.asList.pExprList->ExprType <= HB_ET_VARIABLE )
{
/* 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_compExprFree( pExpr, HB_MACRO_PARAM );
}
}
return pSelf;
}
BOOL hb_compExprReduceAT( HB_EXPR_PTR pSelf, HB_MACRO_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 )
{
if( pSub->value.asString.string[0] == '\0' )
{
pReduced = hb_compExprNewLong( 1 );
}
else
{
pReduced = hb_compExprNewLong( hb_strAt( pSub->value.asString.string, pSub->ulLength, pText->value.asString.string, pText->ulLength ) );
}
hb_compExprFree( pSelf->value.asFunCall.pFunName, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asFunCall.pParms, HB_MACRO_PARAM );
memcpy( pSelf, pReduced, sizeof( HB_EXPR ) );
hb_compExprClear( pReduced );
return TRUE;
}
else
return FALSE;
}
BOOL hb_compExprReduceCHR( HB_EXPR_PTR pSelf, HB_MACRO_DECL )
{
HB_EXPR_PTR pParms = pSelf->value.asFunCall.pParms;
HB_EXPR_PTR pArg = pParms->value.asList.pExprList;
HB_EXPR_PTR pExpr = NULL;
/* 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] */
pExpr = hb_compExprNew( HB_ET_STRING );
pExpr->ValType = HB_EV_STRING;
if( pArg->value.asNum.NumType == HB_ET_LONG )
{
BYTE bVal;
bVal = ( pArg->value.asNum.lVal % 256 );
if( bVal == 0 && pArg->value.asNum.lVal != 0 )
{
pExpr->value.asString.string = ( char * ) hb_xgrab( 1 );
pExpr->value.asString.string[ 0 ] = '\0';
pExpr->value.asString.dealloc = TRUE;
pExpr->ulLength = 0;
}
else
{
pExpr->value.asString.string = ( char * ) hb_xgrab( 2 );
pExpr->value.asString.string[ 0 ] = bVal;
pExpr->value.asString.string[ 1 ] = '\0';
pExpr->value.asString.dealloc = TRUE;
pExpr->ulLength = 1;
}
}
else
{
pExpr->value.asString.string = ( char * ) hb_xgrab( 2 );
pExpr->value.asString.string[ 0 ] = ( ( unsigned int ) pArg->value.asNum.dVal % 256 );
pExpr->value.asString.string[ 1 ] = '\0';
pExpr->value.asString.dealloc = TRUE;
pExpr->ulLength = 1;
}
hb_compExprFree( pParms, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asFunCall.pFunName, HB_MACRO_PARAM );
memcpy( pSelf, pExpr, sizeof( HB_EXPR ) );
hb_compExprClear( pExpr );
return TRUE;
}
return FALSE;
}
BOOL hb_compExprReduceLEN( HB_EXPR_PTR pSelf, HB_MACRO_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_compExprFree( pParms, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asFunCall.pFunName, HB_MACRO_PARAM );
memcpy( pSelf, pExpr, sizeof( HB_EXPR ) );
hb_compExprClear( pExpr );
return TRUE;
}
return FALSE;
}
BOOL hb_compExprReduceASC( HB_EXPR_PTR pSelf, HB_MACRO_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( pArg->value.asString.string[0] );
hb_compExprFree( pParms, HB_MACRO_PARAM );
hb_compExprFree( pSelf->value.asFunCall.pFunName, HB_MACRO_PARAM );
memcpy( pSelf, pExpr, sizeof( HB_EXPR ) );
hb_compExprClear( pExpr );
return TRUE;
}
return FALSE;
}