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

/*

 * Copyright (c) 2007,2008,2009 INRIA, UDcast

 *

 * 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

 *

 * Authors: Jahanzeb Farooq <jahanzeb.farooq@sophia.inria.fr>

 *          Mohamed Amine Ismail <amine.ismail@sophia.inria.fr>

 *                               <amine.ismail@UDcast.com>

 */

#include <stdint.h>

#include "cid-factory.h"

#include "ns3/uinteger.h"

namespace ns3 {

CidFactory::CidFactory (void)

  : m_m (0x5500),

    // this is an arbitrary default

    m_basicIdentifier (1),

    m_primaryIdentifier (m_m + 1),

    m_transportOrSecondaryIdentifier (2 * m_m + 1),

    m_multicastPollingIdentifier (0xff00)

{

}

Cid

CidFactory::AllocateBasic (void)

{

  NS_ASSERT (m_basicIdentifier < m_m);

  m_basicIdentifier++;

  return Cid (m_basicIdentifier);

}

Cid

CidFactory::AllocatePrimary (void)

{

  NS_ASSERT (m_primaryIdentifier < 2 * m_m);

  m_primaryIdentifier++;

  return Cid (m_primaryIdentifier);

}

Cid

CidFactory::AllocateTransportOrSecondary (void)

{

  NS_ASSERT (m_transportOrSecondaryIdentifier < 0xfefe);

  m_transportOrSecondaryIdentifier++;

  return Cid (m_transportOrSecondaryIdentifier);

}

Cid

CidFactory::AllocateMulticast (void)

{

  NS_ASSERT (m_multicastPollingIdentifier < 0xfffd);

  m_multicastPollingIdentifier++;

  return Cid (m_multicastPollingIdentifier);

}

Cid

CidFactory::Allocate (enum Cid::Type type)

{

  switch (type)

    {

    case Cid::BROADCAST:

      return Cid::Broadcast ();

    case Cid::INITIAL_RANGING:

      return Cid::InitialRanging ();

    case Cid::BASIC:

      return AllocateBasic ();

    case Cid::PRIMARY:

      return AllocatePrimary ();

    case Cid::TRANSPORT:

      return AllocateTransportOrSecondary ();

    case Cid::MULTICAST:

      return AllocateMulticast ();

    case Cid::PADDING:

      return Cid::Padding ();

    default:

      NS_FATAL_ERROR ("Cannot be reached");

      return 0; // quiet compiler

    }

}

bool

CidFactory::IsTransport (Cid cid) const

{

}

bool

CidFactory::IsPrimary (Cid cid) const

{

}

bool

CidFactory::IsBasic (Cid cid) const

{

  uint16_t id = cid.m_identifier;

  return id >= 1 && id <= m_m;

}

void

CidFactory::FreeCid (Cid cid)

{

  /// \todo We need to update the cid bitmap properly here.

  NS_FATAL_ERROR ("TODO: Update the cid bitmap properly here-- please implement and contribute a patch");

}

} // namespace ns3