93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
/*
|
|
* $Id$
|
|
*/
|
|
|
|
/*
|
|
* Harbour Project source code:
|
|
* EMPTY() function
|
|
*
|
|
* Copyright 1999 {list of individual authors and e-mail addresses}
|
|
* 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 of the License, or
|
|
* (at your option) any later version, with one exception:
|
|
*
|
|
* The exception is that if you link the Harbour Runtime Library (HRL)
|
|
* and/or the Harbour Virtual Machine (HVM) 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 HRL
|
|
* and/or HVM code into it.
|
|
*
|
|
* 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 program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
|
|
* their web site at http://www.gnu.org/).
|
|
*
|
|
*/
|
|
|
|
#include "hbapi.h"
|
|
#include "hbapiitm.h"
|
|
|
|
HARBOUR HB_EMPTY( void )
|
|
{
|
|
PHB_ITEM pItem = hb_param( 1, IT_ANY );
|
|
|
|
/* NOTE: Double safety to ensure that a parameter was really passed,
|
|
compiler checks this, but a direct hb_vmDo() call
|
|
may not do so. [vszakats] */
|
|
|
|
if( pItem )
|
|
{
|
|
switch( pItem->type & ~IT_BYREF )
|
|
{
|
|
case IT_ARRAY:
|
|
hb_retl( hb_arrayLen( pItem ) == 0 );
|
|
break;
|
|
|
|
case IT_STRING:
|
|
case IT_MEMO:
|
|
hb_retl( hb_strEmpty( hb_itemGetCPtr( pItem ), hb_itemGetCLen( pItem ) ) );
|
|
break;
|
|
|
|
case IT_INTEGER:
|
|
hb_retl( hb_itemGetNI( pItem ) == 0 );
|
|
break;
|
|
|
|
case IT_LONG:
|
|
hb_retl( hb_itemGetNL( pItem ) == 0 );
|
|
break;
|
|
|
|
case IT_DOUBLE:
|
|
hb_retl( hb_itemGetND( pItem ) == 0.0 );
|
|
break;
|
|
|
|
case IT_DATE:
|
|
hb_retl( hb_itemGetDL( pItem ) == 0 );
|
|
break;
|
|
|
|
case IT_LOGICAL:
|
|
hb_retl( ! hb_itemGetL( pItem ) );
|
|
break;
|
|
|
|
case IT_BLOCK:
|
|
hb_retl( FALSE );
|
|
break;
|
|
|
|
default:
|
|
hb_retl( TRUE );
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
hb_retl( TRUE );
|
|
}
|
|
|