osbtype.h

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// OSB library ************************************************ -*- C++ -*-
/*
  AUTHOR(S): Stephan Broennimann (vb)

  RCS information
   $Name: OSB_060808 $
   $Revision: 1.19 $

  License
   OSB rating and billing library for communication networks
   Copyright (C) 2004, 2005, 2006  OSB systems

   This file may be distributed and/or modify under the terms of the
   GNU General Public License (GPL) as published by the Free Software
   Foundation which is provided in the file LICENSE.GPL included in the
   packaging of this file.

   The file 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.

   Holders of a OSB Commercial License may use this file under the terms
   and conditions of this commercial license.
 */
#ifndef _OSBTYPE_H_
#define _OSBTYPE_H_

// ************************************************************************
// included header files
// + standard includes
#include <ostream>

// + libraries

// + local headers

// ************************************************************************
// class declarations

// ************************************************************************
// namespace extensions
namespace OSB_LIB {

// ************************************************************************
// class definitions
    template<typename T, int ST = 1> class TypeId {
    public:                                 // construction
        explicit TypeId(long type = notSet_) : type_(type)
        {
            if (!notSet()) {
                if (   type_ < minType_
                    || type_ > maxType_) type_ = unknown_;
            }
        }
    public:
        static long minType() { return minType_; }
        static long maxType() { return maxType_; }
        static TypeId mkUnknown() { return TypeId(unknown_); }
    public:
        bool valid() const
        {
            return type_ != notSet_ && type_ != unknown_;
        }
        bool notSet() const
        {
            return type_ == notSet_;
        }
        bool unKnown() const
        {
            return type_ == unknown_;
        }
        bool operator==(const TypeId& rhs) const
        {
            return type_ == rhs.type_;
        }
        bool operator!=(const TypeId& rhs) const
        {
            return !operator==(rhs);
        }
        bool operator<(const TypeId& rhs) const
        {
            return type_ < rhs.type_;
        }
    public:
        long toLong() const
        {
            return type_;
        }
    private:
        long type_;
    private:
        static const long notSet_  = 0;
        static const long unknown_ = -1;
        static const long minType_;
        static const long maxType_;
    };

    template<typename T, int ST>
    inline std::ostream& operator<<(
              std::ostream&  os,
        const TypeId<T, ST>& t
    )
    {
        return os << t.toLong();
    }
}                                       // namespace OSB_LIB

// ************************************************************************
// inline definitions
namespace OSB_LIB {
    template<typename T, int ST> const long TypeId<T, ST>::notSet_;
    template<typename T, int ST> const long TypeId<T, ST>::unknown_;
}                                       // namespace OSB_LIB
#endif                                  // #ifndef _OSBTYPE_H_

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