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CLOBSH.PAK
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OBJECT.H
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C/C++ Source or Header
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1995-08-29
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5KB
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210 lines
/*------------------------------------------------------------------------*/
/* */
/* OBJECT.H */
/* */
/* Copyright Borland International 1991, 1993 */
/* All Rights Reserved */
/* */
/*------------------------------------------------------------------------*/
#if !defined( __OBJECT_H )
#define __OBJECT_H
#define BI_OLDNAMES
#if !defined( __STDDEF_H )
#include <StdDef.h>
#endif // __STDDEF_H
#if !defined( __IOSTREAM_H )
#include <iostream.h>
#endif // __IOSTREAM_H
#if !defined( __CLASSLIB_SHDDEL_H )
#include "classlib\shddel.h"
#endif // __CLASSLIB_SHDDEL_H
#if !defined( __CLSTYPES_H )
#include "classlib\obsolete\ClsTypes.h"
#endif // __CLSTYPES_H
#if !defined( __CLSDEFS_H )
#include "classlib\obsolete\ClsDefs.h"
#endif // __CLSDEFS_H
#pragma option -Vo-
#if defined( __BCOPT__ ) && !defined( __FLAT__ ) && !defined( _ALLOW_po )
#pragma option -po-
#endif
_CLASSDEF(Object)
_CLASSDEF(Error)
typedef TShouldDelete ShdDel;
class _CLASSTYPE Object
{
public:
virtual ~Object()
{
}
virtual classType isA() const = 0;
virtual char _FAR *nameOf() const = 0;
virtual hashValueType hashValue() const = 0;
virtual int isEqual( const Object _FAR & ) const = 0;
virtual int isSortable() const
{
return 0;
}
virtual int isAssociation() const
{
return 0;
}
virtual void forEach( iterFuncType, void _FAR * );
virtual Object _FAR & firstThat( condFuncType, void _FAR * ) const;
virtual Object _FAR & lastThat( condFuncType, void _FAR * ) const;
virtual void printOn( ostream _FAR & ) const = 0;
static Object _FAR *ZERO;
static Object _FAR & ptrToRef( Object _FAR *p )
{ return p == 0 ? *ZERO : *p; }
static const Object _FAR & ptrToRef( const Object _FAR *p )
{ return p == 0 ? *ZERO : *p; }
friend ostream _FAR& operator << ( ostream _FAR&, const Object _FAR& );
class _EXPCLASS TShouldDelete
{
friend Object;
public:
enum DeleteType { NoDelete, DefDelete, Delete };
TShouldDelete( DeleteType dt = Delete ) :
ShouldDelete((ShdDel::DeleteType)dt)
{
}
int ownsElements()
{
return ShouldDelete.OwnsElements();
}
void ownsElements( int del )
{
ShouldDelete.OwnsElements(del);
}
protected:
int delObj( DeleteType dt )
{
return ShouldDelete.DelObj((ShdDel::DeleteType)dt);
}
private:
ShdDel ShouldDelete;
};
};
#define NOOBJECT (*(Object::ZERO))
inline void Object::forEach( iterFuncType func, void _FAR *args )
{
( *func )( *this, args );
}
inline Object _FAR & Object::firstThat( condFuncType func,
void _FAR *args
) const
{
return (*func)( *this, args ) == 0 ? NOOBJECT : (Object&)*this;
}
inline Object _FAR & Object::lastThat( condFuncType func,
void _FAR *args
) const
{
return Object::firstThat( func, args );
}
inline ostream _FAR& operator << ( ostream _FAR& out, const Object _FAR& obj )
{
obj.printOn( out );
return out;
}
inline int operator == ( const Object _FAR& test1, const Object _FAR& test2 )
{
return (test1.isA() == test2.isA()) && test1.isEqual( test2 );
}
inline int operator !=( const Object _FAR& test1, const Object _FAR& test2 )
{
return !( test1 == test2 );
}
class _CLASSTYPE Error : public Object
{
public:
virtual classType isA() const
{
return errorClass;
}
virtual char _FAR *nameOf() const
{
return "Error";
}
virtual hashValueType hashValue() const
{
return ERROR_CLASS_HASH_VALUE;
}
virtual int isEqual( const Object _FAR & ) const
{
return 1;
}
virtual void printOn( ostream _FAR & ) const;
void operator delete( void _FAR * );
};
inline void Error::printOn( ostream _FAR & out ) const
{
out << nameOf() << '\n';
}
inline void Error::operator delete( void _FAR * )
{
ClassLib_error( __EDELERROR );
}
#if defined( __BCOPT__ ) && !defined( __FLAT__ ) && !defined( _ALLOW_po )
#pragma option -po.
#endif
#pragma option -Vo.
#endif