/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2007 INRIA

 * All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation;

 *

 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>

 */

#ifndef EMPTY_TRACE_RESOLVER_H

#define EMPTY_TRACE_RESOLVER_H

#include "trace-resolver.h"

namespace ns3 {

class TraceContext;

/**

 * \brief a TraceResolver instance which does not resolve anything.

 * \ingroup tracing

 *

 * Trying to resolve against this class will yield no matches and no

 * connections. Returning an instance of this class from a 

 * CreateTraceResolver method is a hand way of not implementing

 * any Tracing code.

 */

class EmptyTraceResolver : public TraceResolver

{

public:

  /**

   * \param o necessary context for this class.

   *

   * The only constructor exported by this class.

   */

  EmptyTraceResolver (TraceContext const &o);

};

}//namespace ns3

#endif /* EMPTY_TRACE_RESOLVER_H */