681 lines
17 KiB
C
681 lines
17 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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The Error API
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Copyright 1999 Antonio Linares <alinares@fivetech.com>
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www - http://www.harbour-project.org
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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 of the License, or
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(at your option) any later version, with one exception:
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The exception is that if you link the Harbour Runtime Library (HRL)
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and/or the Harbour Virtual Machine (HVM) with other files to produce
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an executable, this does not by itself cause the resulting executable
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to be covered by the GNU General Public License. Your use of that
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executable is in no way restricted on account of linking the HRL
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and/or HVM code into it.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
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their web site at http://www.gnu.org/).
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*/
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/* Harbour Project source code
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http://www.Harbour-Project.org/
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The following functions are Copyright 1999 Victor Szel <info@szelvesz.hu>:
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HB_DOSERROR()
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hb_errLaunch()
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hb_errLaunchSubst()
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hb_errGetFlags()
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hb_errPutFlags()
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hb_errRT_New()
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hb_errRT_New_Subst()
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HB___ERRRT_BASE()
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hb_errRT_BASE()
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hb_errRT_BASE_Ext1()
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hb_errRT_BASE_Subst()
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hb_errInternal()
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See doc/hdr_tpl.txt, Version 1.2 or later, for licensing terms.
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*/
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#include "extend.h"
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#include "ctoharb.h"
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#include "itemapi.h"
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#include "errorapi.h"
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#include "langapi.h"
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/* This is added to be able to detect a recursive error, and not let Harbour
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go into an infinite loop, this is an emulated version of the Clipper
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"Unrecoverable error 650: Processor stack fault" internal error, but
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better shows what is really the problem */
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#define HB_ERROR_LAUNCH_MAX 8
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static HB_ITEM s_errorBlock;
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static int s_iLaunchCount = 0;
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static USHORT s_uiErrorDOS = 0; /* The value of DOSERROR() */
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extern HARBOUR HB_ERRORNEW( void );
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/* NOTE: This is called via its symbol name, so we should make sure */
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/* that it gets linked. WARNING ! DON'T make this function static. */
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void hb_errForceLink()
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{
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HB_ERRORNEW();
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}
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HARBOUR HB_ERRORBLOCK( void )
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{
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HB_ITEM oldError;
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PHB_ITEM pNewErrorBlock = hb_param( 1, IT_BLOCK );
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hb_itemClear( &oldError );
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hb_itemCopy( &oldError, &s_errorBlock );
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if( pNewErrorBlock )
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hb_itemCopy( &s_errorBlock, pNewErrorBlock );
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hb_itemReturn( &oldError );
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hb_itemClear( &oldError );
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}
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/* TOFIX: Make it Clipper compatible */
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HARBOUR HB_DOSERROR( void )
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{
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hb_retni( s_uiErrorDOS );
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if( ISNUM( 1 ) )
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s_uiErrorDOS = ( USHORT ) hb_parni( 1 );
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}
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void hb_errInit( void )
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{
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hb_itemClear( &s_errorBlock );
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}
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void hb_errExit( void )
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{
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hb_itemClear( &s_errorBlock );
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}
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PHB_ITEM hb_errNew( void )
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{
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PHB_ITEM pReturn = hb_itemNew( NULL );
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hb_vmPushSymbol( hb_dynsymGet( "ERRORNEW" )->pSymbol );
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hb_vmPushNil();
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hb_vmDo( 0 );
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hb_itemCopy( pReturn, &stack.Return );
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return pReturn;
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}
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WORD hb_errLaunch( PHB_ITEM pError )
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{
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WORD wRetVal;
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if( pError )
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{
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PHB_ITEM pResult;
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/* Check if we have a valid error handler */
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if( hb_itemType( &s_errorBlock ) != IT_BLOCK )
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hb_errInternal( 9999, "No ERRORBLOCK() for error", NULL, NULL );
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/* Check if the error launcher was called too many times recursively */
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if( s_iLaunchCount == HB_ERROR_LAUNCH_MAX )
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hb_errInternal( 9999, "Too many recursive error handler calls", NULL, NULL );
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/* Launch the error handler: "lResult := EVAL( ErrorBlock(), oError )" */
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s_iLaunchCount++;
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pResult = hb_itemDo( &s_errorBlock, 1, pError );
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s_iLaunchCount--;
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/* Check results */
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if( hb_vmRequestQuery() == HB_QUIT_REQUESTED )
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{
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hb_itemRelease( pResult );
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hb_errRelease( pError );
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hb_vmQuit();
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}
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else if( hb_vmRequestQuery() == HB_BREAK_REQUESTED )
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{
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hb_itemRelease( pResult );
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wRetVal = E_BREAK;
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}
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else
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{
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BOOL bFailure = FALSE;
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USHORT uiFlags = hb_errGetFlags( pError );
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/* If the error block didn't return a logical value, */
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/* or the canSubstitute flag has been set, consider it as a failure */
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if( hb_itemType( pResult ) != IT_LOGICAL || ( uiFlags & EF_CANSUBSTITUTE ) )
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bFailure = TRUE;
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else
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{
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wRetVal = hb_itemGetL( pResult ) ? E_RETRY : E_DEFAULT;
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if( ( wRetVal == E_DEFAULT && !( uiFlags & EF_CANDEFAULT ) ) ||
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( wRetVal == E_RETRY && !( uiFlags & EF_CANRETRY ) ) )
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bFailure = TRUE;
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}
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hb_itemRelease( pResult );
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if( bFailure )
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hb_errInternal( 9999, "Error recovery failure", NULL, NULL );
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/* Add one try to the counter. */
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if( wRetVal == E_RETRY )
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hb_errPutTries( pError, hb_errGetTries( pError ) + 1 );
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}
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}
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else
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wRetVal = E_RETRY; /* Clipper does this, undocumented */
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return wRetVal;
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}
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/* This error launcher should be used in those situations, where the error
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handler is expected to return a value to be substituted as the result of
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a failed operation. */
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/* NOTE: This should only be called when the EF_CANSUBSTITUE flag was set
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Since it this case the error handler will return the value
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to be substituted */
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/* NOTE: The item pointer returned should be hb_itemRelease()-d by the
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caller if it was not NULL. */
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PHB_ITEM hb_errLaunchSubst( PHB_ITEM pError )
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{
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PHB_ITEM pResult;
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if( pError )
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{
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/* Check if we have a valid error handler */
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if( hb_itemType( &s_errorBlock ) != IT_BLOCK )
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hb_errInternal( 9999, "No ERRORBLOCK() for error", NULL, NULL );
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/* Check if the error launcher was called too many times recursively */
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if( s_iLaunchCount == HB_ERROR_LAUNCH_MAX )
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hb_errInternal( 9999, "Too many recursive ERRORBLOCK() calls", NULL, NULL );
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/* Launch the error handler: "xResult := EVAL( ErrorBlock(), oError )" */
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s_iLaunchCount++;
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pResult = hb_itemDo( &s_errorBlock, 1, pError );
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s_iLaunchCount--;
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/* Check results */
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if( hb_vmRequestQuery() == HB_QUIT_REQUESTED )
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{
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hb_itemRelease( pResult );
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hb_errRelease( pError );
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hb_vmQuit();
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}
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else if( hb_vmRequestQuery() == HB_BREAK_REQUESTED )
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{
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hb_itemRelease( pResult );
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pResult = NULL;
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}
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else
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{
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/* If the canSubstitute flag has not been set,
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consider it as a failure. */
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if( ! ( hb_errGetFlags( pError ) & EF_CANSUBSTITUTE ) )
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hb_errInternal( 9999, "Error recovery failure", NULL, NULL );
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}
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}
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else
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pResult = hb_itemNew( NULL );
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return pResult;
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}
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void hb_errRelease( PHB_ITEM pError )
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{
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/* NOTE: NULL pointer is checked by hb_itemRelease() */
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hb_itemRelease( pError );
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}
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char * hb_errGetDescription( PHB_ITEM pError )
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{
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hb_vmPushSymbol( hb_dynsymGet( "DESCRIPTION" )->pSymbol );
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hb_vmPush( pError );
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hb_vmDo( 0 );
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return hb_itemGetCPtr( &stack.Return );
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}
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PHB_ITEM hb_errPutDescription( PHB_ITEM pError, char * szDescription )
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{
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hb_vmPushSymbol( hb_dynsymGet( "_DESCRIPTION" )->pSymbol );
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hb_vmPush( pError );
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hb_vmPushString( szDescription, strlen( szDescription ) );
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hb_vmDo( 1 );
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return pError;
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}
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char * hb_errGetFileName( PHB_ITEM pError )
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{
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hb_vmPushSymbol( hb_dynsymGet( "FILENAME" )->pSymbol );
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hb_vmPush( pError );
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hb_vmDo( 0 );
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return hb_itemGetCPtr( &stack.Return );
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}
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PHB_ITEM hb_errPutFileName( PHB_ITEM pError, char * szFileName )
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{
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hb_vmPushSymbol( hb_dynsymGet( "_FILENAME" )->pSymbol );
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hb_vmPush( pError );
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hb_vmPushString( szFileName, strlen( szFileName ) );
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hb_vmDo( 1 );
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return pError;
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}
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USHORT hb_errGetGenCode( PHB_ITEM pError )
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{
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hb_vmPushSymbol( hb_dynsymGet( "GENCODE" )->pSymbol );
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hb_vmPush( pError );
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hb_vmDo( 0 );
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return hb_itemGetNI( &stack.Return );
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}
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PHB_ITEM hb_errPutGenCode( PHB_ITEM pError, USHORT uiGenCode )
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{
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hb_vmPushSymbol( hb_dynsymGet( "_GENCODE" )->pSymbol );
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hb_vmPush( pError );
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hb_vmPushInteger( uiGenCode );
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hb_vmDo( 1 );
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return pError;
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}
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char * hb_errGetOperation( PHB_ITEM pError )
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{
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hb_vmPushSymbol( hb_dynsymGet( "OPERATION" )->pSymbol );
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hb_vmPush( pError );
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hb_vmDo( 0 );
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return hb_itemGetCPtr( &stack.Return );
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}
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PHB_ITEM hb_errPutOperation( PHB_ITEM pError, char * szOperation )
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{
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hb_vmPushSymbol( hb_dynsymGet( "_OPERATION" )->pSymbol );
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hb_vmPush( pError );
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hb_vmPushString( szOperation, strlen( szOperation ) );
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hb_vmDo( 1 );
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return pError;
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}
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USHORT hb_errGetOsCode( PHB_ITEM pError )
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{
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hb_vmPushSymbol( hb_dynsymGet( "OSCODE" )->pSymbol );
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hb_vmPush( pError );
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hb_vmDo( 0 );
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return hb_itemGetNI( &stack.Return );
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}
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PHB_ITEM hb_errPutOsCode( PHB_ITEM pError, USHORT uiOsCode )
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{
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hb_vmPushSymbol( hb_dynsymGet( "_OSCODE" )->pSymbol );
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hb_vmPush( pError );
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hb_vmPushInteger( uiOsCode );
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hb_vmDo( 1 );
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return pError;
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}
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USHORT hb_errGetSeverity( PHB_ITEM pError )
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{
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hb_vmPushSymbol( hb_dynsymGet( "SEVERITY" )->pSymbol );
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hb_vmPush( pError );
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hb_vmDo( 0 );
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return hb_itemGetNI( &stack.Return );
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}
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PHB_ITEM hb_errPutSeverity( PHB_ITEM pError, USHORT uiSeverity )
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{
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hb_vmPushSymbol( hb_dynsymGet( "_SEVERITY" )->pSymbol );
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hb_vmPush( pError );
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hb_vmPushInteger( uiSeverity );
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hb_vmDo( 1 );
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return pError;
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}
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USHORT hb_errGetSubCode( PHB_ITEM pError )
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{
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hb_vmPushSymbol( hb_dynsymGet( "SUBCODE" )->pSymbol );
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hb_vmPush( pError );
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hb_vmDo( 0 );
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return hb_itemGetNI( &stack.Return );
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}
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PHB_ITEM hb_errPutSubCode( PHB_ITEM pError, USHORT uiSubCode )
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{
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hb_vmPushSymbol( hb_dynsymGet( "_SUBCODE" )->pSymbol );
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hb_vmPush( pError );
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hb_vmPushInteger( uiSubCode );
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hb_vmDo( 1 );
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return pError;
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}
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char * hb_errGetSubSystem( PHB_ITEM pError )
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{
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hb_vmPushSymbol( hb_dynsymGet( "SUBSYSTEM" )->pSymbol );
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hb_vmPush( pError );
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hb_vmDo( 0 );
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return hb_itemGetCPtr( &stack.Return );
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}
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PHB_ITEM hb_errPutSubSystem( PHB_ITEM pError, char * szSubSystem )
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{
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hb_vmPushSymbol( hb_dynsymGet( "_SUBSYSTEM" )->pSymbol );
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hb_vmPush( pError );
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hb_vmPushString( szSubSystem, strlen( szSubSystem ) );
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hb_vmDo( 1 );
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return pError;
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}
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USHORT hb_errGetTries( PHB_ITEM pError )
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{
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hb_vmPushSymbol( hb_dynsymGet( "TRIES" )->pSymbol );
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hb_vmPush( pError );
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hb_vmDo( 0 );
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return hb_itemGetNI( &stack.Return );
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}
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PHB_ITEM hb_errPutTries( PHB_ITEM pError, USHORT uiTries )
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{
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hb_vmPushSymbol( hb_dynsymGet( "_TRIES" )->pSymbol );
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hb_vmPush( pError );
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hb_vmPushInteger( uiTries );
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hb_vmDo( 1 );
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return pError;
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}
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USHORT hb_errGetFlags( PHB_ITEM pError )
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{
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USHORT uiFlags = EF_NONE;
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/* ; */
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hb_vmPushSymbol( hb_dynsymGet( "CANRETRY" )->pSymbol );
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hb_vmPush( pError );
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hb_vmDo( 0 );
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if( hb_itemGetL( &stack.Return ) )
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uiFlags |= EF_CANRETRY;
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/* ; */
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hb_vmPushSymbol( hb_dynsymGet( "CANSUBSTITUTE" )->pSymbol );
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hb_vmPush( pError );
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hb_vmDo( 0 );
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if( hb_itemGetL( &stack.Return ) )
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uiFlags |= EF_CANSUBSTITUTE;
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/* ; */
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hb_vmPushSymbol( hb_dynsymGet( "CANDEFAULT" )->pSymbol );
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hb_vmPush( pError );
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hb_vmDo( 0 );
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if( hb_itemGetL( &stack.Return ) )
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uiFlags |= EF_CANDEFAULT;
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/* ; */
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return uiFlags;
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}
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PHB_ITEM hb_errPutFlags( PHB_ITEM pError, USHORT uiFlags )
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{
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hb_vmPushSymbol( hb_dynsymGet( "_CANRETRY" )->pSymbol );
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hb_vmPush( pError );
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hb_vmPushLogical( ( uiFlags & EF_CANRETRY ) ? TRUE : FALSE );
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hb_vmDo( 1 );
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/* ; */
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hb_vmPushSymbol( hb_dynsymGet( "_CANSUBSTITUTE" )->pSymbol );
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hb_vmPush( pError );
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hb_vmPushLogical( ( uiFlags & EF_CANSUBSTITUTE ) ? TRUE : FALSE );
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hb_vmDo( 1 );
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/* ; */
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hb_vmPushSymbol( hb_dynsymGet( "_CANDEFAULT" )->pSymbol );
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hb_vmPush( pError );
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hb_vmPushLogical( ( uiFlags & EF_CANDEFAULT ) ? TRUE : FALSE );
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hb_vmDo( 1 );
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/* ; */
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return pError;
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}
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PHB_ITEM hb_errPutArgs( PHB_ITEM pError, USHORT uiArgCount, ... )
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{
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PHB_ITEM pArray = hb_itemArrayNew( uiArgCount );
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USHORT uiArgPos;
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va_list va;
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/* Build the array from the passed arguments. */
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va_start( va, uiArgCount );
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for( uiArgPos = 1; uiArgPos <= uiArgCount; uiArgPos++ )
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hb_itemArrayPut( pArray, uiArgPos, va_arg( va, PHB_ITEM ) );
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va_end( va );
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/* Assign the new array to the object data item. */
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hb_vmPushSymbol( hb_dynsymGet( "_ARGS" )->pSymbol );
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hb_vmPush( pError );
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hb_vmPush( pArray );
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hb_vmDo( 1 );
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hb_itemRelease( pArray );
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return pError;
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}
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/* Wrappers for hb_errLaunch() */
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PHB_ITEM hb_errRT_New(
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USHORT uiSeverity,
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char * szSubSystem,
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ULONG ulGenCode,
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ULONG ulSubCode,
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char * szDescription,
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char * szOperation,
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USHORT uiOsCode,
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USHORT uiFlags )
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{
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PHB_ITEM pError = hb_errNew();
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hb_errPutSeverity( pError, uiSeverity );
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hb_errPutSubSystem( pError, szSubSystem ? szSubSystem : HB_ERR_SS_BASE );
|
|
hb_errPutGenCode( pError, ulGenCode );
|
|
hb_errPutSubCode( pError, ulSubCode );
|
|
hb_errPutDescription( pError, szDescription ? szDescription : hb_langDGetErrorDesc( ulGenCode ) );
|
|
hb_errPutOperation( pError, szOperation ? szOperation : "" );
|
|
hb_errPutOsCode( pError, uiOsCode );
|
|
hb_errPutFlags( pError, uiFlags );
|
|
|
|
return pError;
|
|
}
|
|
|
|
PHB_ITEM hb_errRT_New_Subst(
|
|
USHORT uiSeverity,
|
|
char * szSubSystem,
|
|
ULONG ulGenCode,
|
|
ULONG ulSubCode,
|
|
char * szDescription,
|
|
char * szOperation,
|
|
USHORT uiOsCode,
|
|
USHORT uiFlags )
|
|
{
|
|
PHB_ITEM pError = hb_errNew();
|
|
|
|
hb_errPutSeverity( pError, uiSeverity );
|
|
hb_errPutSubSystem( pError, szSubSystem ? szSubSystem : HB_ERR_SS_BASE );
|
|
hb_errPutGenCode( pError, ulGenCode );
|
|
hb_errPutSubCode( pError, ulSubCode );
|
|
hb_errPutDescription( pError, szDescription ? szDescription : hb_langDGetErrorDesc( ulGenCode ) );
|
|
hb_errPutOperation( pError, szOperation ? szOperation : "" );
|
|
hb_errPutOsCode( pError, uiOsCode );
|
|
hb_errPutFlags( pError, uiFlags | EF_CANSUBSTITUTE );
|
|
|
|
return( pError );
|
|
}
|
|
|
|
HARBOUR HB___ERRRT_BASE( void )
|
|
{
|
|
hb_errRT_BASE( ( ULONG ) hb_parnl( 1 ),
|
|
( ULONG ) hb_parnl( 2 ),
|
|
ISCHAR( 3 ) ? hb_parc( 3 ) : NULL,
|
|
hb_parc( 4 ) );
|
|
}
|
|
|
|
WORD hb_errRT_BASE( ULONG ulGenCode, ULONG ulSubCode, char * szDescription, char * szOperation )
|
|
{
|
|
WORD wRetVal;
|
|
PHB_ITEM pError =
|
|
hb_errRT_New( ES_ERROR, HB_ERR_SS_BASE, ulGenCode, ulSubCode, szDescription, szOperation, 0, EF_NONE );
|
|
|
|
wRetVal = hb_errLaunch( pError );
|
|
|
|
hb_errRelease( pError );
|
|
|
|
return wRetVal;
|
|
}
|
|
|
|
WORD hb_errRT_BASE_Ext1( ULONG ulGenCode, ULONG ulSubCode, char * szDescription, char * szOperation, USHORT uiOsCode, USHORT uiFlags )
|
|
{
|
|
WORD wRetVal;
|
|
PHB_ITEM pError =
|
|
hb_errRT_New( ES_ERROR, HB_ERR_SS_BASE, ulGenCode, ulSubCode, szDescription, szOperation, uiOsCode, uiFlags );
|
|
|
|
wRetVal = hb_errLaunch( pError );
|
|
|
|
hb_errRelease( pError );
|
|
|
|
return wRetVal;
|
|
}
|
|
|
|
PHB_ITEM hb_errRT_BASE_Subst( ULONG ulGenCode, ULONG ulSubCode, char * szDescription, char * szOperation )
|
|
{
|
|
PHB_ITEM pRetVal;
|
|
PHB_ITEM pError =
|
|
hb_errRT_New_Subst( ES_ERROR, HB_ERR_SS_BASE, ulGenCode, ulSubCode, szDescription, szOperation, 0, EF_NONE );
|
|
|
|
pRetVal = hb_errLaunchSubst( pError );
|
|
|
|
hb_errRelease( pError );
|
|
|
|
return pRetVal;
|
|
}
|
|
|
|
WORD hb_errRT_TERM( ULONG ulGenCode, ULONG ulSubCode, char * szDescription, char * szOperation, USHORT uiOSCode, USHORT uiFlags )
|
|
{
|
|
WORD wRetVal;
|
|
PHB_ITEM pError =
|
|
hb_errRT_New( ES_ERROR, HB_ERR_SS_TERMINAL, ulGenCode, ulSubCode, szDescription, szOperation, uiOSCode, uiFlags );
|
|
|
|
wRetVal = hb_errLaunch( pError );
|
|
|
|
hb_errRelease( pError );
|
|
|
|
return wRetVal;
|
|
}
|
|
|
|
WORD hb_errRT_DBCMD( ULONG ulGenCode, ULONG ulSubCode, char * szDescription, char * szOperation )
|
|
{
|
|
WORD wRetVal;
|
|
PHB_ITEM pError =
|
|
hb_errRT_New( ES_ERROR, HB_ERR_SS_DBCMD, ulGenCode, ulSubCode, szDescription, szOperation, 0, EF_NONE );
|
|
|
|
wRetVal = hb_errLaunch( pError );
|
|
|
|
hb_errRelease( pError );
|
|
|
|
return wRetVal;
|
|
}
|
|
|
|
WORD hb_errRT_TOOLS( ULONG ulGenCode, ULONG ulSubCode, char * szDescription, char * szOperation )
|
|
{
|
|
WORD wRetVal;
|
|
PHB_ITEM pError =
|
|
hb_errRT_New( ES_ERROR, HB_ERR_SS_BASE, ulGenCode, ulSubCode, szDescription, szOperation, 0, EF_NONE );
|
|
|
|
wRetVal = hb_errLaunch( pError );
|
|
|
|
hb_errRelease( pError );
|
|
|
|
return wRetVal;
|
|
}
|
|
|
|
/* NOTE: Use as minimal calls from here, as possible. */
|
|
/* Don't allocate memory from this function. */
|
|
|
|
void hb_errInternal( ULONG ulIntCode, char * szText, char * szPar1, char * szPar2 )
|
|
{
|
|
printf( hb_consoleGetNewLine() );
|
|
printf( "Unrecoverable error %lu: ", ulIntCode );
|
|
printf( szText != NULL ? szText : hb_langDGetErrorIntr( ulIntCode ), szPar1, szPar2 );
|
|
printf( hb_consoleGetNewLine() );
|
|
|
|
hb_stackDispCall();
|
|
|
|
exit( EXIT_FAILURE );
|
|
}
|
|
|