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

/*

 * Copyright (c) 2007 INRIA

 *

 * 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 RANDOM_STREAM_H

#define RANDOM_STREAM_H

#include <stdint.h>

#include <list>

#include "ns3/rng-stream.h"

namespace ns3 {

/**

 * A simple wrapper around RngStream to make testing 

 * of the code easier.

 */

class RandomStream

{

public:

  virtual ~RandomStream ();

  virtual uint32_t GetNext (uint32_t min, uint32_t max) = 0;

};

class RealRandomStream : public RandomStream

{

public:

  RealRandomStream ();

  virtual uint32_t GetNext (uint32_t min, uint32_t max);

private:

  RngStream m_stream;

};

class TestRandomStream : public RandomStream

{

public:

  void AddNext (uint32_t v);

  virtual uint32_t GetNext (uint32_t min, uint32_t max);

private:

  std::list<uint32_t> m_nexts;

};

} // namespace ns3

#endif /* RANDOM_STREAM_H */