integerid.h

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#pragma once

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Bert
 Date:          June 2016
________________________________________________________________________

-*/

#include "undefval.h"
template <class T> class TypeSet;


template <class IntType>
mClass(Basic) IntegerID
{
public:

    typedef IntType     IDType;

    inline              IntegerID() : nr_(-1)   {}
    static inline IntegerID get( IntType i )
                                                { return IntegerID(i); }

    inline IntType      getI() const            { return nr_; }
    inline void         setI( IntType i )       { nr_ = i; }

    inline bool         operator ==( const IntegerID& oth ) const
                                        { return nr_ == oth.nr_;};
    inline bool         operator !=( const IntegerID& oth ) const
                                        { return nr_ != oth.nr_;};
                                // Do not add '>' or similar!

    inline bool         isInvalid() const       { return nr_ < 0; }
    inline bool         isValid() const         { return !isInvalid(); }
    inline void         setInvalid()            { nr_ = -1; }
    static inline IntegerID getInvalid()        { return IntegerID(-1); }

protected:

    IntType             nr_;

    inline              IntegerID( IntType i )
                            : nr_(i)    { /* keep this constructor private! */ }

    friend class        TypeSet<IntType>;

};


#define mDefIntegerIDType(IntType,classname) \
 \
class classname : public IntegerID<IntType> \
{ \
public: \
 \
    inline              classname()     {} \
 \
    static inline classname get( IntType i ) \
                                        { return classname(i); } \
 \
    inline bool         operator ==( const classname& oth ) const \
                        { return IntegerID<IntType>::operator ==(oth); } \
    inline bool         operator !=( const classname& oth ) const \
                        { return IntegerID<IntType>::operator !=(oth); } \
 \
    static inline classname getInvalid() { return classname(-1); } \
 \
protected: \
 \
    inline              classname( IntType i ) \
                            : IntegerID<IntType>(i)     {} \
 \
    friend class        TypeSet<classname>; \
 \
}