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harbour-core/harbour/include/hbmacro.h
Przemyslaw Czerpak 22100001e8 2010-07-08 12:35 UTC+0200 Przemyslaw Czerpak (druzus/at/priv.onet.pl) 
* harbour/include/hbpp.h
  * harbour/include/hbmacro.h
  * harbour/include/hbcomp.h
  * harbour/include/hbcompdf.h
  * harbour/include/hbexprb.c
  * harbour/src/pp/ppcore.c
  * harbour/src/compiler/hbmain.c
  * harbour/src/vm/macro.c
    ! fixed code used to decide about early and late macro
      evaluation in codeblocks to be exactly Clipper compatible.
      Now if codeblock contains at least one macro variable
      (i.e.: &var, any&var, any&var.2) then it's always early
      evaluated.
      Please remember that codeblocks which contains only simple
      macro variable ( &var[.] ), i.e.:
         {|| &var }
      are modified during compilation by Clipper and Harbour compilers to:
         &( "{||" + var + "}" )
      and then PCODE is generated. It allows to use LOCALs, STATICs and
      FIELDs as 'var' in such expressions. In xHarbour above functionality
      was extended to work also with macrotext variables, i.e.:
         {|| &var.2 }
      If you think it's important extension then I can make the same
      in Harbour or I can even implement it for all codeblock expressions
      with macros using declared non memvar symbols, i.e.
         {|| &var + 1 }
      what should effectively eliminate E0047 compile time error
    ! fixed compile time error E0042 "Macro of declared symbol..."
      to be generated with the same conditions as in Clipper.
    ! fixed compile time error E0047
         "Code block contains both macro and declared symbol references..."
      to be generated with the same conditions as in Clipper.
      Note: -km switch disables macro text evaluation so also above errors
      unless macro is not used in codeblock

      Warning: above modifications can cause compile time errors in some
               code which was not Clipper compatible and in such case they
               will have to be updated.

  * harbour/utils/hbtest/rt_math.prg
    ! updated code with Clipper incompatible code exploited by above
      modifications
2010-07-08 10:35:53 +00:00

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/*
* $Id$
*/
/*
* Harbour Project source code:
* Header file for the Macro compiler
*
* Copyright 1999 Ryszard Glab
* www - http://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.
*
*/
#ifndef HB_MACRO_H_
#define HB_MACRO_H_
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <time.h>
#include "hbcompdf.h"
#include "hbapi.h"
#include "hbapiitm.h"
#include "hbapierr.h"
#include "hbvm.h"
#include "hbexprop.h"
#include "hbpcode.h"
#include "hbmacro.ch"
HB_EXTERN_BEGIN
/* flags for compilation process
*/
#define HB_MACRO_GEN_PUSH 1 /* generate PUSH pcodes */
#define HB_MACRO_GEN_POP 2 /* generate POP pcodes */
#define HB_MACRO_GEN_ALIASED 4 /* force aliased variable */
#define HB_MACRO_GEN_TYPE 8 /* check the type of expression (from TYPE() function) */
#define HB_MACRO_GEN_PARE 16 /* generate parentesized list */
#define HB_MACRO_GEN_LIST 32 /* generate push operation for every comma separated expressions */
#define HB_MACRO_GEN_REFER 64 /* generate PUSH pcodes for reference to given expression */
#define HB_MACRO_DEALLOCATE 128 /* macro structure is allocated on the heap */
/* values returned from compilation process
*/
#define HB_MACRO_OK 0 /* macro compiled successfully */
#define HB_MACRO_FAILURE 1 /* syntax error */
/* additional status of compilation
*/
#define HB_MACRO_CONT 1 /* everything is OK so far */
#define HB_MACRO_TOO_COMPLEX 2 /* compiled expression is too complex */
#define HB_MACRO_UDF 4 /* code uses UDF function (info used by TYPE function) */
#define HB_MACRO_UNKN_SYM 8 /* requested symbol was not found in runtime symbol table */
#define HB_MACRO_UNKN_VAR 16 /* requested variable doesn't exist */
/* Global functions
*/
extern void hb_macroError( int iError, HB_COMP_DECL );
extern int hb_macroYYParse( HB_MACRO_PTR pMacro );
extern int hb_macroSetMacro( HB_BOOL fSet, int flag );
extern HB_ULONG hb_macroAutoSetMacro( HB_ULONG ulFlag );
extern HB_BOOL hb_macroLexNew( HB_MACRO_PTR pMacro );
extern void hb_macroLexDelete( HB_MACRO_PTR pMacro );
extern char * hb_macroIdentNew( HB_COMP_DECL, char * );
extern HB_EXPR_PTR hb_macroExprGenPush( HB_EXPR_PTR, HB_COMP_DECL );
extern HB_EXPR_PTR hb_macroExprGenPop( HB_EXPR_PTR, HB_COMP_DECL );
extern HB_EXPR_PTR hb_macroExprNewArrayAt( HB_EXPR_PTR pArray, HB_EXPR_PTR pIndex, HB_COMP_DECL );
extern HB_EXPR_PTR hb_macroExprNewFunCall( HB_EXPR_PTR pName, HB_EXPR_PTR pParms, HB_COMP_DECL );
/* Size of pcode buffer incrementation
*/
#define HB_PCODE_SIZE 512
/* Declarations for functions macro.c */
#if defined( HB_MACRO_SUPPORT )
extern void hb_macroGenPCode1( HB_BYTE byte, HB_COMP_DECL );
extern void hb_macroGenPCode2( HB_BYTE byte1, HB_BYTE byte2, HB_COMP_DECL );
extern void hb_macroGenPCode3( HB_BYTE byte1, HB_BYTE byte2, HB_BYTE byte3, HB_COMP_DECL );
extern void hb_macroGenPCode4( HB_BYTE byte1, HB_BYTE byte2, HB_BYTE byte3, HB_BYTE byte4, HB_COMP_DECL );
extern void hb_macroGenPCodeN( HB_BYTE * pBuffer, HB_SIZE nSize, HB_COMP_DECL );
extern HB_SIZE hb_macroGenJump( HB_ISIZ nOffset, HB_COMP_DECL );
extern HB_SIZE hb_macroGenJumpFalse( HB_ISIZ nOffset, HB_COMP_DECL );
extern void hb_macroGenJumpThere( HB_SIZE nFrom, HB_SIZE nTo, HB_COMP_DECL );
extern void hb_macroGenJumpHere( HB_SIZE nOffset, HB_COMP_DECL );
extern HB_SIZE hb_macroGenJumpTrue( HB_ISIZ nOffset, HB_COMP_DECL );
extern void hb_macroGenPushSymbol( const char * szSymbolName, HB_BOOL bFunction, HB_COMP_DECL );
extern void hb_macroGenPushLong( HB_MAXINT nNumber, HB_COMP_DECL );
extern void hb_macroGenPushDate( long lDate, HB_COMP_DECL );
extern void hb_macroGenPushTimeStamp( long lDate, long lTime, HB_COMP_DECL );
extern void hb_macroGenMessage( const char * szMsgName, HB_BOOL bIsObject, HB_COMP_DECL );
extern void hb_macroGenMessageData( const char * szMsg, HB_BOOL bIsObject, HB_COMP_DECL );
extern void hb_macroGenPopVar( const char * szVarName, HB_COMP_DECL );
extern void hb_macroGenPopMemvar( const char * szVarName, HB_COMP_DECL );
extern void hb_macroGenPopAliasedVar( const char * szVarName,
HB_BOOL bPushAliasValue,
const char * szAlias,
HB_MAXINT nWorkarea, HB_COMP_DECL );
extern void hb_macroGenPushVar( const char * szVarName, HB_COMP_DECL );
extern void hb_macroGenPushVarRef( const char * szVarName, HB_COMP_DECL );
extern void hb_macroGenPushMemvarRef( const char * szVarName, HB_COMP_DECL );
extern void hb_macroGenPushAliasedVar( const char * szVarName,
HB_BOOL bPushAliasValue,
const char * szAlias,
HB_MAXINT nWorkarea, HB_COMP_DECL );
extern void hb_macroGenPushLogical( int iTrueFalse, HB_COMP_DECL );
extern void hb_macroGenPushDouble( double dNumber, HB_BYTE bWidth, HB_BYTE bDec, HB_COMP_DECL );
extern void hb_macroGenPushFunCall( const char * szFunName, int iFlags, HB_COMP_DECL );
extern void hb_macroGenPushFunSym( const char * szFunName, int iFlags, HB_COMP_DECL );
extern void hb_macroGenPushFunRef( const char * szFunName, HB_COMP_DECL );
extern void hb_macroGenPushString( const char * szText, HB_SIZE nStrLen, HB_COMP_DECL );
extern void hb_macroCodeBlockStart( HB_COMP_DECL );
extern void hb_macroCodeBlockEnd( HB_COMP_DECL );
extern int hb_macroLocalVarGetPos( const char * szVarName, HB_COMP_DECL );
extern HB_BOOL hb_macroIsValidMacroText( const char * szText, HB_SIZE nLen );
#endif /* HB_MACRO_SUPPORT */
HB_EXTERN_END
#endif /* HB_MACRO_H_ */
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