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

/*

 * Copyright (c) 2008 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

 *

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

 */

#include "attribute.h"

#include "log.h"

#include "fatal-error.h"

#include "string.h"

#include <sstream>

NS_LOG_COMPONENT_DEFINE ("AttributeValue");

namespace ns3 {

AttributeValue::AttributeValue ()

{

}

AttributeValue::~AttributeValue ()

{

}

AttributeAccessor::AttributeAccessor ()

{

}

AttributeAccessor::~AttributeAccessor ()

{

}

AttributeChecker::AttributeChecker ()

{

}

AttributeChecker::~AttributeChecker ()

{

}

Ptr<AttributeValue> 

AttributeChecker::CreateValidValue (const AttributeValue &value) const

{

  if (Check (value))

    {

      return value.Copy ();

    }

  // attempt to convert to string.

  const StringValue *str = dynamic_cast<const StringValue *> (&value);

  if (str == 0)

    {

      return 0;

    }

  // attempt to convert back to value.

  Ptr<AttributeValue> v = Create ();

  bool ok = v->DeserializeFromString (str->Get (), this);

  if (!ok)

    {

      return 0;

    }

  ok = Check (*v);

  if (!ok)

    {

      return 0;

    }

  return v;

}

EmptyAttributeValue::EmptyAttributeValue ()

{

}

Ptr<AttributeValue>

EmptyAttributeValue::Copy (void) const

{

  return Create<EmptyAttributeValue> ();

}

std::string

EmptyAttributeValue::SerializeToString (Ptr<const AttributeChecker> checker) const

{

  return "";

}

bool

EmptyAttributeValue::DeserializeFromString (std::string value, Ptr<const AttributeChecker> checker)

{

  return true;

}

} // namespace ns3