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DOS/V Power Report 1997 May
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VPR9705A.ISO
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GENERIC.H
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C/C++ Source or Header
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1997-02-14
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2KB
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72 lines
/* generic.h -- for faking generic class declarations
When type templates are implemented in C++, this will probably go away.
*/
/*
* C/C++ Run Time Library - Version 8.0
*
* Copyright (c) 1990, 1997 by Borland International
* All Rights Reserved.
*
*/
/* $Revision: 8.1 $ */
#ifndef __cplusplus
#error Must use C++ for classes
#endif
#ifndef __GENERIC_H
#define __GENERIC_H
#if !defined(___DEFS_H)
#include <_defs.h>
#endif
#if !defined(RC_INVOKED)
#if defined(__STDC__)
#pragma warn -nak
#endif
#endif
// token-pasting macros; ANSI requires an extra level of indirection
#define _Paste2(z, y) _Paste2_x(z, y)
#define _Paste2_x(z, y) z##y
#define _Paste3(z, y, x) _Paste3_x(z, y, x)
#define _Paste3_x(z, y, x) z##y##x
#define _Paste4(z, y, x, w) _Paste4_x(z, y, x, w)
#define _Paste4_x(z, y, x, w) z##y##x##w
// macros for declaring and implementing classes
#define name2 _Paste2
#define declare(z, y) _Paste2(z, declare)(y)
#define implement(z, y) _Paste2(z, implement)(y)
#define declare2(z, y, x) _Paste2(z, declare2)(y, x)
#define implement2(z, y, x) _Paste2(z, implement2)(y, x)
// macros for declaring error-handling functions
extern _RTLENTRY genericerror(int, char _FAR *); // not implemented ***
typedef int _RTLENTRY (_FAR *GPT)(int, char _FAR *);
#define set_handler(gen, tp, z) _Paste4(set_, tp, gen, _handler)(z)
#define errorhandler(gen, tp) _Paste3(tp, gen, handler)
#define callerror(gen, tp, z, y) (*errorhandler(gen, tp))(z, y)
/*
* function genericerror is not documented in the AT&T release, and
* is not supplied. If you can document any expected behavior, we
* will try to adjust our implementation accordingly.
*/
#if !defined(RC_INVOKED)
#if defined(__STDC__)
#pragma warn .nak
#endif
#endif
#endif /* __GENERIC_H */