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harbour-core/harbour/include/hbvm.h
Przemyslaw Czerpak 473b620290 2005-11-22 01:51 UTC+0100 Przemyslaw Czerpak (druzus/at/priv.onet.pl) 
* harbour/include/hbsetup.ch
    * enable HB_COMPAT_FLAGSHIP by default
      I hope it will not be a problem - if it does then I can disable it
      but in *nixes for a long time FlagShip was the only one Clipper
      alternative and some of its functions are quite often used in
      Clipper/FoxPro programs ported to *nixes so I'd want to keep it
      enabled at least when HB_OS_LINUX/HB_OS_UNIX is defined.


  * harbour/include/hbvm.h
    + added missing extern in hb_vmAtInit() and hb_vmAtExit() declarations

  * harbour/include/hbvmpub.h
    * formatting

  * harbour/source/rdd/dbcmd.c
    ! fixed the problem with fieldput(<n>,nil) at phantom recrod reported
      by Victor
    * do not use C level HB_ITEM

  * harbour/source/rdd/dbf1.c
  * harbour/source/rdd/dbfcdx/dbfcdx1.c
  * harbour/source/rdd/dbfntx/dbfntx1.c
    ! fixed possible GPF when "/an/existing/path/" was used as file name.
      No in DOS in such case it will casue RT error that file:
         /an/existing/path/.<ext>
      cannot be created (like in Clipper) but in other systems (f.e. Linux)
      which allow to use such file names it will work without any problems.

  * harbour/source/rdd/dbffpt/dbffpt1.c
    * do not use C level HB_ITEM

  * harbour/source/rtl/Makefile
  + harbour/source/rtl/strpeek.c
    + added STRPEEK and STRPOKE FS functions covered by HB_COMPAT_FLAGSHIP
      macro

  * harbour/source/rtl/philes.c
    ! fixed GPF when unshareing string item buffer with embedded 0 by using
      hb_itemUnShare()

  * harbour/include/hbapiitm.h
  * harbour/source/vm/itemapi.c
    + added hb_itemUnShare() - /* un-share given string item */
      and hb_itemClone() - /* clone the given item */
2005-11-22 00:55:51 +00:00

124 lines
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/*
* $Id$
*/
/*
* Harbour Project source code:
* Header file for the Virtual Machine API
*
* Copyright 1999 Antonio Linares <alinares@fivetech.com>
* 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.
*
*/
#ifndef HB_VM_H_
#define HB_VM_H_
#include "hbapi.h"
HB_EXTERN_BEGIN
/* Harbour virtual machine init/exit functions */
extern void HB_EXPORT hb_vmInit( BOOL bStartMainProc );
extern void HB_EXPORT hb_vmQuit( void ); /* Immediately quits the virtual machine */
/* registration AtInit and AtExit functions - they are executed
* just before (after) .prg INIT (EXIT) procedures.
*/
extern void HB_EXPORT hb_vmAtInit( HB_INIT_FUNC pFunc, void * cargo );
extern void HB_EXPORT hb_vmAtExit( HB_INIT_FUNC pFunc, void * cargo );
/* Harbour virtual machine functions */
extern void HB_EXPORT hb_vmExecute( const BYTE * pCode, PHB_SYMB pSymbols ); /* invokes the virtual machine */
extern void HB_EXPORT hb_vmProcessSymbols( PHB_SYMB pSymbols, USHORT uiSymbols ); /* statics symbols initialization */
extern void hb_vmSymbolInit_RT( void ); /* initialization of runtime support symbols */
/* Harbour virtual machine escaping API */
extern void hb_vmRequestBreak( PHB_ITEM pItem );
extern void hb_vmRequestCancel( void );
extern void hb_vmRequestDebug( void );
extern void hb_vmRequestEndProc( void );
extern USHORT hb_vmRequestQuery( void );
extern void hb_vmRequestQuit( void );
/* Return values of hb_vmRequestQuery() */
#define HB_QUIT_REQUESTED 1 /* immediately quit the application */
#define HB_BREAK_REQUESTED 2 /* break to nearest RECOVER/END sequence */
#define HB_ENDPROC_REQUESTED 4 /* immediately return from procedure (error handler in macro evaluation) */
/* Public PCode functions */
/* Execution */
extern void hb_vmDo( USHORT uiParams ); /* invoke the virtual machine */
extern void hb_vmFunction( USHORT uiParams ); /* executes a function saving its result */
extern void hb_vmSend( USHORT uiParams ); /* sends a message to an object */
extern PHB_ITEM hb_vmEvalBlock( PHB_ITEM pBlockItem ); /* executes passed codeblock with no arguments */
/* executes passed codeblock with variable number of arguments */
extern PHB_ITEM hb_vmEvalBlockV( PHB_ITEM pBlockItem, ULONG ulArgCount, ... );
HB_EXPORT extern PHB_ITEM hb_vmEvalBlockOrMacro( PHB_ITEM pItem ); /* executes codeblock or macro pointed by given item */
HB_EXPORT extern void hb_vmDestroyBlockOrMacro( PHB_ITEM pItem ); /* destroy codeblock or macro in given item */
/* Push */
extern void hb_vmPush( PHB_ITEM pItem ); /* pushes a generic item onto the stack */
extern void hb_vmPushNil( void ); /* in this case it places nil at self */
extern void hb_vmPushNumber( double dNumber, int iDec ); /* pushes a number on to the stack and decides if it is integer, long or double */
extern void hb_vmPushInteger( int iNumber ); /* pushes a integer number onto the stack */
extern void hb_vmPushLong( long lNumber ); /* pushes a long number onto the stack */
extern void hb_vmPushDouble( double lNumber, int iDec ); /* pushes a double number onto the stack */
extern void hb_vmPushLogical( BOOL bValue ); /* pushes a logical value onto the stack */
extern void hb_vmPushString( char * szText, ULONG length ); /* pushes a string on to the stack */
extern void hb_vmPushStringPcode( char * szText, ULONG length ); /* pushes a string from pcode on to the stack */
extern void hb_vmPushDate( long lDate ); /* pushes a long date onto the stack */
extern void hb_vmPushSymbol( PHB_SYMB pSym ); /* pushes a function pointer onto the stack */
extern void hb_vmPushPointer( void * ); /* push an item of HB_IT_POINTER type */
/* various flags for supported features
*/
#define HB_VMFLAG_HARBOUR 1 /* enable Harbour extension */
#define HB_VMFLAG_ARRSTR 2 /* support for string as array of bytes -ks */
extern ULONG hb_vmFlagEnabled( ULONG flag);
HB_EXTERN_END
#endif /* HB_VM_H_ */
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