enum.h

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/* -*- 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>
 */
#ifndef ENUM_VALUE_H
#define ENUM_VALUE_H
 
#include "attribute.h"
#include "attribute-accessor-helper.h"
#include <list>
 
namespace ns3 {
 
//  Additional docs for class EnumValue:
class EnumValue : public AttributeValue
{
public:
  EnumValue ();
  EnumValue (int value);
  void Set (int  value);
  int Get (void) const;
  template <typename T>
  bool GetAccessor (T & value) const;
 
  virtual Ptr<AttributeValue> Copy (void) const;
  virtual std::string SerializeToString (Ptr<const AttributeChecker> checker) const;
  virtual bool DeserializeFromString (std::string value, Ptr<const AttributeChecker> checker);
 
private:
  int m_value;  
};
 
template <typename T>
bool
EnumValue::GetAccessor (T &value) const
{
  value = T (m_value);
  return true;
}
 
class EnumChecker : public AttributeChecker
{
public:
  EnumChecker ();
 
  void AddDefault (int value, std::string name);
  void Add (int value, std::string name);
 
  std::string GetName (int value) const;
 
  int GetValue (const std::string name) const;
 
  // Inherited
  virtual bool Check (const AttributeValue &value) const;
  virtual std::string GetValueTypeName (void) const;
  virtual bool HasUnderlyingTypeInformation (void) const;
  virtual std::string GetUnderlyingTypeInformation (void) const;
  virtual Ptr<AttributeValue> Create (void) const;
  virtual bool Copy (const AttributeValue &src, AttributeValue &dst) const;
 
private:
  typedef std::pair<int,std::string> Value;
  typedef std::list<Value> ValueSet;
  ValueSet m_valueSet;
};
 
template <typename T1>
Ptr<const AttributeAccessor> MakeEnumAccessor (T1 a1);
 
template <typename T1, typename T2>
Ptr<const AttributeAccessor> MakeEnumAccessor (T1 a1, T2 a2);
 
template <typename... Ts>
Ptr<const AttributeChecker>
MakeEnumChecker (int v, std::string n, Ts... args)
{
  Ptr<EnumChecker> checker = Create<EnumChecker> ();
  checker->AddDefault (v, n);
  return MakeEnumChecker (checker, args...);
}
 
template <typename... Ts>
Ptr<const AttributeChecker>
MakeEnumChecker (Ptr<EnumChecker> checker, int v, std::string n, Ts... args)
{
  checker->Add (v, n);
  return MakeEnumChecker (checker, args...);
}
 
// inline to allow tail call optimization
inline
Ptr<const AttributeChecker>
MakeEnumChecker (Ptr<EnumChecker> checker)
{
  return checker;
}
 
 
template <typename T1>
Ptr<const AttributeAccessor> MakeEnumAccessor (T1 a1)
{
  return MakeAccessorHelper<EnumValue> (a1);
}
 
template <typename T1, typename T2>
Ptr<const AttributeAccessor> MakeEnumAccessor (T1 a1, T2 a2)
{
  return MakeAccessorHelper<EnumValue> (a1, a2);
}
 
} // namespace ns3
 
#endif /* ENUM_VALUE_H */