objc-exception.h   [plain text]


/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
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 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
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 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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//  objc_exception.h
//  Support for Objective-C language Exceptions
//
//  Created by Blaine Garst on Fri Nov 01 2002.
//  Copyright (c) 2002-3 Apple Computer, Inc. All rights reserved.
//

#ifndef __OBJC_EXCEPTION_H_
#define __OBJC_EXCEPTION_H_

#import "objc/objc-class.h"

// compiler reserves a setjmp buffer + 4 words as localExceptionData

OBJC_EXPORT void objc_exception_throw(id exception);
OBJC_EXPORT void objc_exception_try_enter(void *localExceptionData);
OBJC_EXPORT void objc_exception_try_exit(void *localExceptionData);
OBJC_EXPORT id objc_exception_extract(void *localExceptionData);
OBJC_EXPORT int objc_exception_match(Class exceptionClass, id exception);


typedef struct {
    int version;
    void (*throw_exc)(id);		// version 0
    void (*try_enter)(void *);	// version 0
    void (*try_exit)(void *);	// version 0
    id	 (*extract)(void *);	// version 0
    int	(*match)(Class, id);	// version 0
}
    objc_exception_functions_t;

// get table; version tells how many
OBJC_EXPORT void objc_exception_get_functions(objc_exception_functions_t *table);

// set table
OBJC_EXPORT void objc_exception_set_functions(objc_exception_functions_t *table);

#endif  // __OBJC_EXCEPTION_H_