/*************************************************************************\
* Copyright (c) 2002 The University of Chicago, as Operator of Argonne
*     National Laboratory.
* Copyright (c) 2002 The Regents of the University of California, as
*     Operator of Los Alamos National Laboratory.
* EPICS BASE Versions 3.13.7
* and higher are distributed subject to a Software License Agreement found
* in file LICENSE that is included with this distribution. 
\*************************************************************************/
/*
 *      $Id$
 *
 *      Author  Jeffrey O. Hill
 *              johill@lanl.gov
 *              505 665 1831
 *
 *      Experimental Physics and Industrial Control System (EPICS)
 *
 *      Copyright 1991, the Regents of the University of California,
 *      and the University of Chicago Board of Governors.
 *
 *      This software was produced under  U.S. Government contracts:
 *      (W-7405-ENG-36) at the Los Alamos National Laboratory,
 *      and (W-31-109-ENG-38) at Argonne National Laboratory.
 *
 *      Initial development by:
 *              The Controls and Automation Group (AT-8)
 *              Ground Test Accelerator
 *              Accelerator Technology Division
 *              Los Alamos National Laboratory
 *
 *      Co-developed with
 *              The Controls and Computing Group
 *              Accelerator Systems Division
 *              Advanced Photon Source
 *              Argonne National Laboratory
 *
 *
 * History
 * $Log$
 * Revision 1.7  1998/10/23 00:28:20  jhill
 * fixed HP-UX warnings
 *
 * Revision 1.6  1997/08/05 00:47:08  jhill
 * fixed warnings
 *
 * Revision 1.5  1997/04/10 19:34:08  jhill
 * API changes
 *
 * Revision 1.4  1996/12/11 01:02:35  jhill
 * removed casEventMaskEntry def
 *
 * Revision 1.3  1996/12/06 22:32:10  jhill
 * force virtual destructor
 *
 * Revision 1.2  1996/11/02 00:54:11  jhill
 * many improvements
 *
 * Revision 1.1.1.1  1996/06/20 00:28:16  jhill
 * ca server installation
 *
 *
 */


#ifndef casEventMaskH
#define casEventMaskH

#include "resourceLib.h"
 
class casEventRegistry;

class epicsShareClass casEventMask {
        friend inline casEventMask operator| (const casEventMask &lhs, 
					const casEventMask &rhs);
        friend inline casEventMask operator& (const casEventMask &lhs, 
					const casEventMask &rhs);
        friend inline int operator== (const casEventMask &lhs, 
					const casEventMask &rhs);
        friend inline int operator!= (const casEventMask &lhs, 
					const casEventMask &rhs);
	friend class casEventRegistry;
public:
	void clear ()
	{
		this->mask = 0u;
	}

	casEventMask (casEventRegistry &reg, const char *pName);

	casEventMask () 
	{
		this->clear();
	}
	
	void show (unsigned level) const;
 
	int eventsSelected()
	{
		return this->mask!=0u;
	}
	int noEventsSelected()
	{
		return this->mask==0u;
	}

	inline void operator|= (const casEventMask &rhs);
	inline void operator&= (const casEventMask &rhs);

private:
	unsigned mask;
};

inline casEventMask operator| (const casEventMask &lhs, const casEventMask &rhs)
{
        casEventMask result;
 
        result.mask = lhs.mask | rhs.mask;
        return result;
}
inline casEventMask operator& (const casEventMask &lhs, const casEventMask &rhs)
{
        casEventMask result;
 
        result.mask = lhs.mask & rhs.mask;
        return result;
}

inline int operator== (const casEventMask &lhs, const casEventMask &rhs)
{
        return lhs.mask == rhs.mask;
}

inline int operator!= (const casEventMask &lhs, const casEventMask &rhs)
{
        return lhs.mask != rhs.mask;
}

inline void casEventMask::operator|= (const casEventMask &rhs) {
	*this = *this | rhs;		
}

inline void casEventMask::operator&= (const casEventMask &rhs) {
	*this = *this & rhs;		
}

#endif // casEventMaskH

