BxVoid0.h

// ##################################################################
// Binx
// $Id: BxVoid0_8h-source.html,v 1.1.1.1 2006/04/19 14:19:02 edikt2 Exp $
//
// Class for void-0 data type.
// ##################################################################
/*

//  edikt::BinX
//  www.edikt.org
//  support@edikt.org

// Copyright (c) 2003 The University of Edinburgh.

*/

#ifndef __BxVoid0__
#define __BxVoid0__

#include "BxDataObject.h"

/*
 * Class implementing the BinX data type void (or NULL).
 * Instances of this class hold and perform operations on the BinX XML Schema
 * type <void-0>.
 * The class provides the follwing services:
 * <UL>
 * <li>Object construction</li>
 * <li>Creating a printable representation of the NULL value</li>
 * </UL>
 * <BR>An instance of this class represents the value NULL.
 * This means that BxVoid0 is both a primitive BinX data type and a specific value.
 * An instance of this class always has the value NULL.
 * It can not be set to any other values.
 * The NULL value can be used in a BinX document as a valid type and value
 * for specifying a union case selection option.
 * <BR><B>Since:</B>  BinX version 1.0.
 */
class DECLSPEC BxVoid0 : public BxDataObject
{
public:
    BxVoid0();
    BxVoid0(const BxVoid0& copy);
    virtual ~BxVoid0();

    virtual char * className() const { return "BxVoid0"; } //<Returns the null-terminated string "BxVoid0".
    virtual BxVoid0* clone() const;
    virtual int size() const { return 0; }
    virtual char * toString(bool xml);
};

#endif

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