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SORTABLE.H
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C/C++ Source or Header
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1992-02-18
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2KB
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69 lines
/*------------------------------------------------------------------------*/
/* */
/* SORTABLE.H */
/* */
/* Copyright Borland International 1991 */
/* All Rights Reserved */
/* */
/*------------------------------------------------------------------------*/
#if !defined( _SORTABLE_H )
#define _SORTABLE_H
#if !defined( __CLSDEFS_H )
#include <ClsDefs.h>
#endif // __CLSDEFS_H
#if !defined( __OBJECT_H )
#include <Object.h>
#endif // __OBJECT_H
_CLASSDEF(ostream)
_CLASSDEF(Sortable)
class _CLASSTYPE Sortable : public Object
{
public:
virtual int isEqual( const Object _FAR & ) const = 0;
virtual int isLessThan( const Object _FAR & ) const = 0;
virtual int isSortable() const
{
return 1;
}
virtual classType isA() const = 0;
virtual char _FAR *nameOf() const = 0;
virtual hashValueType hashValue() const = 0;
virtual void printOn( ostream& ) const = 0;
};
inline
int operator < ( const Sortable _FAR & test1, const Sortable _FAR & test2 )
{
return ( (test1.isA() == test2.isA()) && test1.isLessThan( test2 ) );
}
inline
int operator > ( const Sortable _FAR & test1, const Sortable _FAR & test2 )
{
return !( test1 < test2 ) && test1 != test2;
}
inline
int operator >=( const Sortable _FAR & test1, const Sortable _FAR & test2 )
{
return ( !( test1 <( test2 ) ) );
}
inline
int operator <=( const Sortable _FAR & test1, const Sortable _FAR & test2 )
{
return ( test1 < test2 || test1 == test2 );
}
#endif