9cd2098d6d
* harbour/include/hbapi.h
* harbour/include/hbcomp.h
+ harbour/include/hbcompdf.h
* harbour/include/hberrors.h
* harbour/include/hbexpra.c
* harbour/include/hbexprb.c
* harbour/include/hbexprc.c
* harbour/include/hbexprop.h
* harbour/include/hbmacro.h
* harbour/include/hbpp.h
* harbour/include/hbvm.h
* harbour/source/common/expropt1.c
* harbour/source/common/expropt2.c
* harbour/source/compiler/Makefile
* harbour/source/compiler/cmdcheck.c
* harbour/source/compiler/complex.c
* harbour/source/compiler/genc.c
* harbour/source/compiler/gencc.c
* harbour/source/compiler/gencli.c
* harbour/source/compiler/gencobj.c
* harbour/source/compiler/genhrb.c
* harbour/source/compiler/genjava.c
* harbour/source/compiler/genobj32.c
* harbour/source/compiler/harbour.c
* harbour/source/compiler/harbour.l
* harbour/source/compiler/harbour.y
* harbour/source/compiler/hbcomp.c
* harbour/source/compiler/hbdead.c
* harbour/source/compiler/hbfix.c
* harbour/source/compiler/hbfunchk.c
* harbour/source/compiler/hbgenerr.c
* harbour/source/compiler/hbident.c
* harbour/source/compiler/hbpcode.c
* harbour/source/compiler/ppcomp.c
* harbour/source/macro/macro.y
* harbour/source/pp/ppcore.c
* harbour/source/pp/ppgen.c
* harbour/source/pp/pplib.c
* harbour/source/vm/cmdarg.c
* harbour/source/vm/estack.c
* harbour/source/vm/fm.c
* harbour/source/vm/macro.c
* harbour/utils/hbpp/hbpp.c
* harbour/utils/hbpp/hbpp.h
* harbour/utils/hbpp/hbppcomp.c
* harbour/utils/hbpp/hbppcore.c
* harbour/utils/hbpp/hbpplib.c
* harbour/utils/hbpp/pragma.c
* changed the internal compiler API to be MT safe.
All global and static non constant variables replaced by
HB_COMP structure which have all compiler context settings.
It's possible to allocate simultaneously many compiler contexts
and compile code. Only constant/read only variables are shared.
In macro compiler HB_COMP is replaced by HB_MACRO.
In source code I everywhere used to macros: HB_COMP_DECL and
HB_COMP_PARAM which are equivalents of old HB_MACRO_DECL and
HB_MACRO_PARAM definitions.
We will only have to change compiler FATAL errors support to
not execute exit() for non batch systems.
* make macro compiler fully MT safe
* removed not longer used definitions and variables
! add direct accessing to PP line number information - it fixes missing
line numbers reported recently
! added generating .ppo files when tokens are teken directly by compiler
- it fixes empty .ppo file problem
! clear hb_stack internall variables after removing hb_stack to avoid
possible GPF if application still works and try to access unexsiting
hb_stack
! do not allocate new memory block when final FM statistic report is
generated - it fixes problem with GPF when application compiled with
FM statistic exits and CLIPPER envvar is set.
! fixed memory leak hb_cmdargCheck()
! added to harbour.y symbol destructors - it should fixes memory leaks
in syntax errors but it uses quite new bison feature which is not
fully supported yet. Unfortunately it's also not MT safe and the
destructors implementation in 1.875c does not respect %parse-param.
Bison documentation says that it should so I hope it will be fixed
soon (or maybe even already is in the newest bison versions) before
I'll add multi context compilation support. If not then I will have
to add some workaround. I can pass compiler context pointer inside
YYSTYPE using hack in a lexer but it will force really huge number
modifications in existing bison rules so probably it will be much
easier to fix bison or write a small tool to update generated parser.
* other modifications - the total size of patch is nearly 1MB and
detail description will have to take me few days.
772 lines
28 KiB
C
772 lines
28 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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* Compiler Expression Optimizer - utilities
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*
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* Copyright 1999 Ryszard Glab
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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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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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/* TOFIX: Split the code, since MSC8 can't compile it, even in Huge model. */
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/* TODO:
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* - Correct post- and pre- operations to correctly handle the following code
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* a[ i++ ]++
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* Notice: in current implementation (an in Clipper too) 'i++' is evaluated
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* two times! This causes that the new value (after incrementation) is
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* stored in next element of the array.
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*/
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#include <math.h>
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#include "hbcomp.h"
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#include "hbmacro.ch"
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#ifdef __WATCOMC__
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/* disable warnings for 'no reference to symbol' */
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#pragma warning 14 9
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#endif
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/* ************************************************************************* */
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static void hb_compExprSendPopPush( HB_EXPR_PTR pObj, HB_COMP_DECL )
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{
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if( pObj->value.asMessage.pObject )
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{
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/* Push _message for later use */
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if( pObj->value.asMessage.szMessage )
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{
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HB_EXPR_PCODE2( hb_compGenMessageData, pObj->value.asMessage.szMessage, TRUE );
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}
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else
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{
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HB_EXPR_USE( pObj->value.asMessage.pMessage, HB_EA_PUSH_PCODE );
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}
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/* Push object */
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HB_EXPR_USE( pObj->value.asMessage.pObject, HB_EA_PUSH_PCODE );
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#ifndef HB_USE_OBJMSG_REF
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/* Now push current value of variable */
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if( pObj->value.asMessage.szMessage )
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{
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HB_EXPR_PCODE2( hb_compGenMessage, pObj->value.asMessage.szMessage, TRUE );
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}
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else
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{
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HB_EXPR_USE( pObj->value.asMessage.pMessage, HB_EA_PUSH_PCODE );
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}
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/* Push object */
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HB_EXPR_USE( pObj->value.asMessage.pObject, HB_EA_PUSH_PCODE );
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#endif
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}
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else
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{
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/* Push _message for later use */
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if( pObj->value.asMessage.szMessage )
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{
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HB_EXPR_PCODE2( hb_compGenMessageData, pObj->value.asMessage.szMessage, FALSE );
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}
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else
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{
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HB_EXPR_USE( pObj->value.asMessage.pMessage, HB_EA_PUSH_PCODE );
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/* Push WITHOBJECTMESSAGE pcode */
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HB_EXPR_PCODE2( hb_compGenMessage, NULL, FALSE );
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}
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#ifndef HB_USE_OBJMSG_REF
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/* Now push current value of variable */
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if( pObj->value.asMessage.szMessage )
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{
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HB_EXPR_PCODE2( hb_compGenMessage, pObj->value.asMessage.szMessage, FALSE );
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}
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else
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{
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HB_EXPR_USE( pObj->value.asMessage.pMessage, HB_EA_PUSH_PCODE );
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/* Push WITHOBJECTMESSAGE pcode */
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HB_EXPR_PCODE2( hb_compGenMessage, NULL, FALSE );
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}
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#endif
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}
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}
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void hb_compExprDelOperator( HB_EXPR_PTR pExpr, HB_COMP_DECL )
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{
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if( pExpr->value.asOperator.pLeft )
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HB_EXPR_PCODE1( hb_compExprDelete, pExpr->value.asOperator.pLeft );
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if( pExpr->value.asOperator.pRight )
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HB_EXPR_PCODE1( hb_compExprDelete, pExpr->value.asOperator.pRight );
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}
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/* Generates pcodes for compound operators += -= *= /= %= ^=
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*
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* pExpr is an expression created by hb_compExprNew<operator>Eq functions
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*/
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void hb_compExprPushOperEq( HB_EXPR_PTR pSelf, BYTE bOpEq, HB_COMP_DECL )
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{
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/* NOTE: an object instance variable needs special handling
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*/
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if( pSelf->value.asOperator.pLeft->ExprType == HB_ET_SEND )
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{
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/* NOTE: COMPATIBILITY ISSUE:
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* The above HB_C52_STRICT setting determines
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* the way the chained send messages are handled.
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* For example, the following code:
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*
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* a:b( COUNT() ):c += 1
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*
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* will be handled as:
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*
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* a:b( COUNT() ):c := a:b( COUNT() ):c + 1
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*
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* in strict Clipper compatibility mode and
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*
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* temp := a:b( COUNT() ), temp:c += 1
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*
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* in non-strict mode.
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* In practice in Clipper it will call COUNT() function two times: the
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* first time before addition and the second one after addition - in Harbour,
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* COUNT() function will be called only once, before addition.
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* The Harbour (non-strict) method is:
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* 1) faster
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* 2) it guarantees that the same instance variable of the same object will
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* be changed
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*/
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HB_EXPR_PCODE1( hb_compExprSendPopPush, pSelf->value.asOperator.pLeft );
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/* Do it. */
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/* Temporary disabled optimization with references to object variables
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untill we will not have extended reference items in our HVM [druzus] */
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#ifdef HB_USE_OBJMSG_REF
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if( bOpEq == HB_P_PLUS || bOpEq == HB_P_MINUS ||
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bOpEq == HB_P_MULT || bOpEq == HB_P_DIVIDE )
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{
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HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_PUSHOVARREF );
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/* push increment value */
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HB_EXPR_USE( pSelf->value.asOperator.pRight, HB_EA_PUSH_PCODE );
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/* increase operation */
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switch( bOpEq )
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{
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case HB_P_PLUS:
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bOpEq = HB_P_PLUSEQ;
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break;
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case HB_P_MINUS:
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bOpEq = HB_P_MINUSEQ;
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break;
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case HB_P_MULT:
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bOpEq = HB_P_MULTEQ;
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break;
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case HB_P_DIVIDE:
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bOpEq = HB_P_DIVEQ;
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break;
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}
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HB_EXPR_PCODE1( hb_compGenPCode1, bOpEq );
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}
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else
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#endif
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{
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HB_EXPR_PCODE2( hb_compGenPCode2, HB_P_SENDSHORT, 0 );
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/* push increment value */
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HB_EXPR_USE( pSelf->value.asOperator.pRight, HB_EA_PUSH_PCODE );
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/* increase operation */
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HB_EXPR_PCODE1( hb_compGenPCode1, bOpEq );
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/* call pop message with one argument */
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HB_EXPR_PCODE2( hb_compGenPCode2, HB_P_SENDSHORT, 1 );
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}
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return;
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}
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/* TODO: add a special code for arrays to correctly handle a[ i++ ]++
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*/
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#if ! defined( HB_MACRO_SUPPORT )
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else if( ( bOpEq == HB_P_PLUS || bOpEq == HB_P_MINUS ||
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bOpEq == HB_P_MULT || bOpEq == HB_P_DIVIDE ) &&
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( pSelf->value.asOperator.pLeft->ExprType == HB_ET_VARIABLE ) )
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{
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int iScope = hb_compVariableScope( HB_COMP_PARAM, pSelf->value.asOperator.pLeft->value.asSymbol );
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if( iScope != HB_VS_LOCAL_FIELD && iScope != HB_VS_GLOBAL_FIELD &&
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iScope != HB_VS_UNDECLARED )
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{
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HB_EXPRTYPE iType = pSelf->value.asOperator.pRight->ExprType;
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if( iType == HB_ET_NUMERIC || iType == HB_ET_STRING )
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{
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if( iScope == HB_VS_LOCAL_VAR && iType == HB_ET_NUMERIC &&
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( bOpEq == HB_P_PLUS || bOpEq == HB_P_MINUS ) )
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{
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int iLocal = hb_compLocalGetPos( HB_COMP_PARAM, pSelf->value.asOperator.pLeft->value.asSymbol );
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if( iLocal < 256 && hb_compExprIsInteger( pSelf->value.asOperator.pRight ) )
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{
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short iIncrement = ( short ) pSelf->value.asOperator.pRight->value.asNum.lVal;
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if( bOpEq != HB_P_MINUS || iIncrement >= -INT16_MAX )
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{
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if( bOpEq == HB_P_MINUS )
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{
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iIncrement = -iIncrement;
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}
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hb_compGenPCode4( HB_P_LOCALNEARADDINT, ( BYTE ) iLocal, HB_LOBYTE( iIncrement ), HB_HIBYTE( iIncrement ), HB_COMP_PARAM );
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HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_PUSH_PCODE );
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return;
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}
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}
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}
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/* NOTE: direct type change */
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pSelf->value.asOperator.pLeft->ExprType = HB_ET_VARREF;
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HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_PUSH_PCODE );
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HB_EXPR_USE( pSelf->value.asOperator.pRight, HB_EA_PUSH_PCODE );
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switch( bOpEq )
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{
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case HB_P_PLUS:
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bOpEq = HB_P_PLUSEQ;
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break;
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case HB_P_MINUS:
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bOpEq = HB_P_MINUSEQ;
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break;
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case HB_P_MULT:
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bOpEq = HB_P_MULTEQ;
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break;
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case HB_P_DIVIDE:
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bOpEq = HB_P_DIVEQ;
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break;
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}
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HB_EXPR_PCODE1( hb_compGenPCode1, bOpEq );
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return;
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}
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else if( pSelf->value.asOperator.pRight->ExprType == HB_ET_VARIABLE )
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{
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int iScope = hb_compVariableScope( HB_COMP_PARAM, pSelf->value.asOperator.pRight->value.asSymbol );
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if( iScope != HB_VS_LOCAL_FIELD && iScope != HB_VS_GLOBAL_FIELD &&
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iScope != HB_VS_UNDECLARED )
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{
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/* NOTE: direct type change */
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pSelf->value.asOperator.pLeft->ExprType = HB_ET_VARREF;
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pSelf->value.asOperator.pRight->ExprType = HB_ET_VARREF;
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HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_PUSH_PCODE );
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HB_EXPR_USE( pSelf->value.asOperator.pRight, HB_EA_PUSH_PCODE );
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switch( bOpEq )
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{
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case HB_P_PLUS:
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bOpEq = HB_P_PLUSEQ;
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break;
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case HB_P_MINUS:
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bOpEq = HB_P_MINUSEQ;
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break;
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case HB_P_MULT:
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bOpEq = HB_P_MULTEQ;
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break;
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case HB_P_DIVIDE:
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bOpEq = HB_P_DIVEQ;
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break;
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}
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HB_EXPR_PCODE1( hb_compGenPCode1, bOpEq );
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return;
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}
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}
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}
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}
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#endif
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/* push old value */
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HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_PUSH_PCODE );
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/* push increment value */
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HB_EXPR_USE( pSelf->value.asOperator.pRight, HB_EA_PUSH_PCODE );
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/* perform operation and duplicate the new value */
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HB_EXPR_PCODE1( hb_compGenPCode1, bOpEq );
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HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_DUPLICATE );
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/* pop the new value into variable and leave the copy on the stack */
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HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_POP_PCODE );
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}
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/* Generates pcodes for <operator>= syntax
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* used standalone as a statement (it cannot leave the value on the stack)
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*/
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void hb_compExprUseOperEq( HB_EXPR_PTR pSelf, BYTE bOpEq, HB_COMP_DECL )
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{
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/* NOTE: an object instance variable needs special handling
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*/
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if( pSelf->value.asOperator.pLeft->ExprType == HB_ET_SEND )
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{
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HB_EXPR_PCODE1( hb_compExprSendPopPush, pSelf->value.asOperator.pLeft );
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/* Do it.*/
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/* Temporary disabled optimization with references to object variables
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untill we will not have extended reference items in our HVM [druzus] */
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#ifdef HB_USE_OBJMSG_REF
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if( bOpEq == HB_P_PLUS || bOpEq == HB_P_MINUS ||
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bOpEq == HB_P_MULT || bOpEq == HB_P_DIVIDE )
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{
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HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_PUSHOVARREF );
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/* push increment value */
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HB_EXPR_USE( pSelf->value.asOperator.pRight, HB_EA_PUSH_PCODE );
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/* increase operation and pop the unneeded value from the stack */
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switch( bOpEq )
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{
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case HB_P_PLUS:
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bOpEq = HB_P_PLUSEQPOP;
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break;
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case HB_P_MINUS:
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bOpEq = HB_P_MINUSEQPOP;
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break;
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case HB_P_MULT:
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bOpEq = HB_P_MULTEQPOP;
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break;
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case HB_P_DIVIDE:
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bOpEq = HB_P_DIVEQPOP;
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break;
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}
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HB_EXPR_PCODE1( hb_compGenPCode1, bOpEq );
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}
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else
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#endif
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{
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HB_EXPR_PCODE2( hb_compGenPCode2, HB_P_SENDSHORT, 0 );
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/* push increment value */
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HB_EXPR_USE( pSelf->value.asOperator.pRight, HB_EA_PUSH_PCODE );
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/* increase operation */
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HB_EXPR_PCODE1( hb_compGenPCode1, bOpEq );
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/* Now do the assignment - call pop message with one argument */
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HB_EXPR_PCODE2( hb_compGenPCode2, HB_P_SENDSHORT, 1 );
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/* pop the unneeded value from the stack */
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HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_POP );
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}
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return;
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}
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/* TODO: add a special code for arrays to correctly handle a[ i++ ]++
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*/
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#if ! defined( HB_MACRO_SUPPORT )
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else if( ( bOpEq == HB_P_PLUS || bOpEq == HB_P_MINUS ||
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bOpEq == HB_P_MULT || bOpEq == HB_P_DIVIDE ) &&
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( pSelf->value.asOperator.pLeft->ExprType == HB_ET_VARIABLE ) )
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{
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int iScope = hb_compVariableScope( HB_COMP_PARAM, pSelf->value.asOperator.pLeft->value.asSymbol );
|
|
|
|
if( iScope != HB_VS_LOCAL_FIELD && iScope != HB_VS_GLOBAL_FIELD &&
|
|
iScope != HB_VS_UNDECLARED )
|
|
{
|
|
HB_EXPRTYPE iType = pSelf->value.asOperator.pRight->ExprType, iOldType;
|
|
|
|
if( iType == HB_ET_NUMERIC || iType == HB_ET_STRING )
|
|
{
|
|
if( iScope == HB_VS_LOCAL_VAR && iType == HB_ET_NUMERIC &&
|
|
( bOpEq == HB_P_PLUS || bOpEq == HB_P_MINUS ) )
|
|
{
|
|
int iLocal = hb_compLocalGetPos( HB_COMP_PARAM, pSelf->value.asOperator.pLeft->value.asSymbol );
|
|
|
|
if( iLocal < 256 && hb_compExprIsInteger( pSelf->value.asOperator.pRight ) )
|
|
{
|
|
short iIncrement = ( short ) pSelf->value.asOperator.pRight->value.asNum.lVal;
|
|
|
|
if( bOpEq != HB_P_MINUS || iIncrement >= -INT16_MAX )
|
|
{
|
|
if( bOpEq == HB_P_MINUS )
|
|
{
|
|
iIncrement = -iIncrement;
|
|
}
|
|
|
|
hb_compGenPCode4( HB_P_LOCALNEARADDINT, ( BYTE ) iLocal, HB_LOBYTE( iIncrement ), HB_HIBYTE( iIncrement ), HB_COMP_PARAM );
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
/* NOTE: direct type change */
|
|
iOldType = pSelf->value.asOperator.pLeft->ExprType;
|
|
pSelf->value.asOperator.pLeft->ExprType = HB_ET_VARREF;
|
|
|
|
HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_PUSH_PCODE );
|
|
HB_EXPR_USE( pSelf->value.asOperator.pRight, HB_EA_PUSH_PCODE );
|
|
switch( bOpEq )
|
|
{
|
|
case HB_P_PLUS:
|
|
bOpEq = HB_P_PLUSEQPOP;
|
|
break;
|
|
case HB_P_MINUS:
|
|
bOpEq = HB_P_MINUSEQPOP;
|
|
break;
|
|
case HB_P_MULT:
|
|
bOpEq = HB_P_MULTEQPOP;
|
|
break;
|
|
case HB_P_DIVIDE:
|
|
bOpEq = HB_P_DIVEQPOP;
|
|
break;
|
|
}
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, bOpEq );
|
|
pSelf->value.asOperator.pLeft->ExprType = iOldType;
|
|
return;
|
|
}
|
|
else if( pSelf->value.asOperator.pRight->ExprType == HB_ET_VARIABLE )
|
|
{
|
|
int iScope = hb_compVariableScope( HB_COMP_PARAM, pSelf->value.asOperator.pRight->value.asSymbol );
|
|
|
|
if( iScope != HB_VS_LOCAL_FIELD && iScope != HB_VS_GLOBAL_FIELD &&
|
|
iScope != HB_VS_UNDECLARED )
|
|
{
|
|
/* NOTE: direct type change */
|
|
iOldType = pSelf->value.asOperator.pLeft->ExprType;
|
|
pSelf->value.asOperator.pLeft->ExprType = HB_ET_VARREF;
|
|
pSelf->value.asOperator.pRight->ExprType = HB_ET_VARREF;
|
|
HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_PUSH_PCODE );
|
|
HB_EXPR_USE( pSelf->value.asOperator.pRight, HB_EA_PUSH_PCODE );
|
|
switch( bOpEq )
|
|
{
|
|
case HB_P_PLUS:
|
|
bOpEq = HB_P_PLUSEQPOP;
|
|
break;
|
|
case HB_P_MINUS:
|
|
bOpEq = HB_P_MINUSEQPOP;
|
|
break;
|
|
case HB_P_MULT:
|
|
bOpEq = HB_P_MULTEQPOP;
|
|
break;
|
|
case HB_P_DIVIDE:
|
|
bOpEq = HB_P_DIVEQPOP;
|
|
break;
|
|
}
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, bOpEq );
|
|
pSelf->value.asOperator.pLeft->ExprType = iOldType;
|
|
pSelf->value.asOperator.pRight->ExprType = iType;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
/* push old value */
|
|
HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_PUSH_PCODE );
|
|
/* push increment value */
|
|
HB_EXPR_USE( pSelf->value.asOperator.pRight, HB_EA_PUSH_PCODE );
|
|
/* add */
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, bOpEq );
|
|
/* pop the new value into variable and remove it from the stack */
|
|
HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_POP_PCODE );
|
|
}
|
|
|
|
/* Generates the pcodes for pre- increment/decrement expressions
|
|
*/
|
|
void hb_compExprPushPreOp( HB_EXPR_PTR pSelf, BYTE bOper, HB_COMP_DECL )
|
|
{
|
|
/* NOTE: an object instance variable needs special handling
|
|
*/
|
|
if( pSelf->value.asOperator.pLeft->ExprType == HB_ET_SEND )
|
|
{
|
|
HB_EXPR_PCODE1( hb_compExprSendPopPush, pSelf->value.asOperator.pLeft );
|
|
/* Do it. */
|
|
|
|
/* Temporary disabled optimization with references to object variables
|
|
untill we will not have extended reference items in our HVM [druzus] */
|
|
#ifdef HB_USE_OBJMSG_REF
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_PUSHOVARREF );
|
|
|
|
/* increase/decrease operation */
|
|
/* We have to unreference the item on the stack, because we do not have
|
|
such PCODE(s) then I'll trnaslate HB_P_INC/HB_P_DEC into
|
|
HB_P_[PLUS|MINUS]EQ, Maybe in the future we will make it
|
|
in differ way [druzus] */
|
|
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_ONE );
|
|
bOper = ( bOper == HB_P_INC ) ? HB_P_PLUSEQ : HB_P_MINUSEQ;
|
|
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, bOper );
|
|
#else
|
|
HB_EXPR_PCODE2( hb_compGenPCode2, HB_P_SENDSHORT, 0 );
|
|
/* increase/decrease operation */
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, bOper );
|
|
/* Now, do the assignment - call pop message with one argument - it leaves the value on the stack */
|
|
HB_EXPR_PCODE2( hb_compGenPCode2, HB_P_SENDSHORT, 1 );
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
/* Push current value */
|
|
HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_PUSH_PCODE );
|
|
/* Increment */
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, bOper );
|
|
/* duplicate a value */
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_DUPLICATE );
|
|
/* pop new value and leave the duplicated copy of it on the stack */
|
|
HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_POP_PCODE );
|
|
}
|
|
}
|
|
|
|
/* Generates the pcodes for post- increment/decrement expressions
|
|
*/
|
|
void hb_compExprPushPostOp( HB_EXPR_PTR pSelf, BYTE bOper, HB_COMP_DECL )
|
|
{
|
|
/* NOTE: an object instance variable needs special handling
|
|
*/
|
|
if( pSelf->value.asOperator.pLeft->ExprType == HB_ET_SEND )
|
|
{
|
|
/* push current value - it will be a result of whole expression */
|
|
HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_PUSH_PCODE );
|
|
/* now increment the value */
|
|
HB_EXPR_PCODE2( hb_compExprPushPreOp, pSelf, bOper );
|
|
/* pop the value from the stack */
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_POP );
|
|
}
|
|
else
|
|
{
|
|
/* Push current value */
|
|
HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_PUSH_PCODE );
|
|
/* Duplicate value */
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_DUPLICATE );
|
|
/* Increment */
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, bOper );
|
|
/* pop new value from the stack */
|
|
HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_POP_PCODE );
|
|
}
|
|
}
|
|
|
|
/* Generates the pcodes for increment/decrement operations
|
|
* used standalone as a statement
|
|
*/
|
|
void hb_compExprUsePreOp( HB_EXPR_PTR pSelf, BYTE bOper, HB_COMP_DECL )
|
|
{
|
|
/* NOTE: an object instance variable needs special handling
|
|
*/
|
|
if( pSelf->value.asOperator.pLeft->ExprType == HB_ET_SEND )
|
|
{
|
|
HB_EXPR_PCODE2( hb_compExprPushPreOp, pSelf, bOper );
|
|
/* pop the value from the stack */
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_POP );
|
|
}
|
|
else
|
|
{
|
|
/* Push current value */
|
|
HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_PUSH_PCODE );
|
|
/* Increment */
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, bOper );
|
|
/* pop new value from the stack */
|
|
HB_EXPR_USE( pSelf->value.asOperator.pLeft, HB_EA_POP_PCODE );
|
|
}
|
|
}
|
|
|
|
/* Generate pcode for aliased expression which contains macro operator on
|
|
* the left or right side of the alias operator
|
|
* expression->¯o or ¯o->expression or ¯o->¯o
|
|
*/
|
|
void hb_compExprUseAliasMacro( HB_EXPR_PTR pAliasedVar, BYTE bAction, HB_COMP_DECL )
|
|
{
|
|
HB_EXPR_PTR pAlias, pVar;
|
|
|
|
/* Alias->Var
|
|
*/
|
|
pAlias = pAliasedVar->value.asAlias.pAlias;
|
|
pVar = pAliasedVar->value.asAlias.pVar;
|
|
if( pAlias->ExprType == HB_ET_ALIAS )
|
|
{
|
|
/* database alias */
|
|
/* Push alias identifier as string so it can be joined with
|
|
* variable at runtime
|
|
* NOTE:
|
|
* ALIAS->&var is the same as &( "ALIAS->" + var )
|
|
*
|
|
*/
|
|
HB_EXPR_PCODE2( hb_compGenPushString, pAlias->value.asSymbol, strlen(pAlias->value.asSymbol) + 1 );
|
|
HB_EXPR_USE( pVar, HB_EA_PUSH_PCODE );
|
|
if( bAction == HB_EA_PUSH_PCODE )
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_MACROPUSHALIASED );
|
|
else
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_MACROPOPALIASED );
|
|
}
|
|
else if( pVar->ExprType == HB_ET_VARIABLE )
|
|
{
|
|
/* NOTE:
|
|
* ¯o->var is the same as: &( macro + "->var" )
|
|
*/
|
|
HB_EXPR_USE( pAlias, HB_EA_PUSH_PCODE );
|
|
HB_EXPR_PCODE2( hb_compGenPushString, pVar->value.asSymbol, strlen(pVar->value.asSymbol) + 1 );
|
|
if( bAction == HB_EA_PUSH_PCODE )
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_MACROPUSHALIASED );
|
|
else
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_MACROPOPALIASED );
|
|
}
|
|
else
|
|
{
|
|
HB_EXPR_USE( pAlias, HB_EA_PUSH_PCODE );
|
|
HB_EXPR_USE( pVar, HB_EA_PUSH_PCODE );
|
|
if( bAction == HB_EA_PUSH_PCODE )
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_MACROPUSHALIASED );
|
|
else
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, HB_P_MACROPOPALIASED );
|
|
}
|
|
|
|
/* Always add byte to pcode indicating requested macro compiler flag. */
|
|
HB_EXPR_PCODE1( hb_compGenPCode1, HB_MACRO_GENFLAGS );
|
|
}
|
|
|
|
|
|
/* Reduces the list of expressions
|
|
*
|
|
* pExpr is the first expression on the list
|
|
*/
|
|
ULONG hb_compExprReduceList( HB_EXPR_PTR pExpr, HB_COMP_DECL )
|
|
{
|
|
HB_EXPR_PTR pNext;
|
|
HB_EXPR_PTR * pPrev;
|
|
ULONG ulCnt = 0;
|
|
|
|
/* NOTE: During optimalization an expression on the list can be
|
|
* replaced by the new one
|
|
*/
|
|
|
|
pPrev = &pExpr->value.asList.pExprList;
|
|
pExpr = pExpr->value.asList.pExprList;
|
|
while( pExpr )
|
|
{
|
|
pNext = pExpr->pNext; /* store next expression in case the current will be reduced */
|
|
pExpr = HB_EXPR_USE( pExpr, HB_EA_REDUCE );
|
|
*pPrev = pExpr; /* store a new expression into the previous one */
|
|
pExpr->pNext = pNext; /* restore the link to next expression */
|
|
pPrev = &pExpr->pNext;
|
|
pExpr = pNext;
|
|
++ulCnt;
|
|
}
|
|
return ulCnt;
|
|
}
|
|
|
|
BOOL hb_compExprIsValidMacro( char * szText, BOOL *pbUseTextSubst, HB_COMP_DECL )
|
|
{
|
|
char * pTmp = szText;
|
|
BOOL bTextSubst;
|
|
BOOL bMacroText = TRUE;
|
|
|
|
*pbUseTextSubst = FALSE; /* no valid macro expression */
|
|
while( ((pTmp = strchr( pTmp, '&' )) != NULL) && bMacroText )
|
|
{
|
|
/* Check if macro operator is used inside a string
|
|
* Macro operator is ignored if it is the last char or
|
|
* next char is '(' e.g. "this is &(ignored)"
|
|
* (except if strict Clipper compatibility mode is enabled)
|
|
*
|
|
* NOTE: This uses _a-zA-Z pattern to check for
|
|
* beginning of a variable name
|
|
*/
|
|
|
|
if( ! HB_COMP_ISSUPPORTED(HB_COMPFLAG_HARBOUR) )
|
|
*pbUseTextSubst = TRUE; /* always macro substitution in Clipper */
|
|
|
|
++pTmp;
|
|
bTextSubst = ( *pTmp == '_' || (*pTmp >= 'A' && *pTmp <= 'Z') || (*pTmp >= 'a' && *pTmp <= 'z') );
|
|
/* NOTE: All variables are assumed memvars in macro compiler -
|
|
* there is no need to check for a valid name
|
|
*/
|
|
if( bTextSubst )
|
|
{
|
|
#if defined( HB_MACRO_SUPPORT )
|
|
HB_SYMBOL_UNUSED( bMacroText );
|
|
*pbUseTextSubst = TRUE; /* valid macro expression */
|
|
return TRUE; /*there is no need to check all '&' occurences */
|
|
#else
|
|
/* There is a valid character after '&' that can be used in
|
|
* variable name - check if the whole variable name is valid
|
|
* (local, static and field variable names are invalid because
|
|
* they are not visible at runtime)
|
|
*/
|
|
char * pStart = pTmp;
|
|
char cSave;
|
|
|
|
/* NOTE: This uses _a-zA-Z0-9 pattern to check for
|
|
* variable name
|
|
*/
|
|
while( *pTmp && (*pTmp == '_' || (*pTmp >= 'A' && *pTmp <= 'Z') || (*pTmp >= 'a' && *pTmp <= 'z') || (*pTmp >= '0' && *pTmp <= '9')) )
|
|
++pTmp;
|
|
|
|
cSave = *pTmp;
|
|
*pTmp = '\0';
|
|
|
|
bMacroText &= hb_compIsValidMacroVar( pStart, HB_COMP_PARAM );
|
|
*pTmp = cSave;
|
|
#endif
|
|
}
|
|
*pbUseTextSubst |= bTextSubst;
|
|
}
|
|
HB_SYMBOL_UNUSED( HB_COMP_PARAM ); /* to suppress BCC warning */
|
|
|
|
return bMacroText;
|
|
}
|
|
|
|
/* Reduces the list of expressions
|
|
*
|
|
* pExpr is the first expression on the list
|
|
*/
|
|
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';
|
|
hb_compExprFree( pRight, HB_COMP_PARAM );
|
|
}
|
|
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_compExprFree( pRight, HB_COMP_PARAM );
|
|
}
|
|
HB_SYMBOL_UNUSED( HB_COMP_PARAM ); /* to suppress BCC warning */
|
|
return pLeft;
|
|
}
|
|
|
|
#ifdef __WATCOMC__
|
|
/* enable warnings for unreferenced symbols */
|
|
#pragma warning 14 2
|
|
#endif
|