65 lines
2.5 KiB
Plaintext
65 lines
2.5 KiB
Plaintext
/*
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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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* Header file for common macros
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*
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* Copyright 1999 {list of individual authors and e-mail addresses}
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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 of the License, or
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* (at your option) any later version, with one exception:
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*
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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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*
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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 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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*/
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#ifndef HB_COMMON_CH_
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#define HB_COMMON_CH_
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/* Friendly logical aliases */
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#define TRUE .T.
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#define FALSE .F.
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#define YES .T.
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#define NO .F.
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/* Type checking macros */
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#translate ISNIL( <xValue> ) => ( <xValue> == NIL )
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#translate ISARRAY( <xValue> ) => ( ValType( <xValue> ) == "A" )
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#translate ISBLOCK( <xValue> ) => ( ValType( <xValue> ) == "B" )
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#translate ISCHARACTER( <xValue> ) => ( ValType( <xValue> ) == "C" )
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#translate ISDATE( <xValue> ) => ( ValType( <xValue> ) == "D" )
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#translate ISLOGICAL( <xValue> ) => ( ValType( <xValue> ) == "L" )
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#translate ISMEMO( <xValue> ) => ( ValType( <xValue> ) == "M" )
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#translate ISNUMBER( <xValue> ) => ( ValType( <xValue> ) == "N" )
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#translate ISOBJECT( <xValue> ) => ( ValType( <xValue> ) == "O" )
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/* DEFAULT and UPDATE commands */
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#xcommand DEFAULT <v1> TO <x1> [, <vn> TO <xn> ] => ;
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IF <v1> == NIL ; <v1> := <x1> ; END ;
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[; IF <vn> == NIL ; <vn> := <xn> ; END ]
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#command UPDATE <v1> IF <exp> TO <v2> => ;
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IF <exp> ; <v1> := <v2> ; END
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#endif /* HB_COMMON_CH_ */
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