+++ /dev/null
-/*
- * Copyright (c) 1999-2003, 2007 Apple Inc. All Rights Reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * 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.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-
-/*
- error.h
-
- This file defines the interface to the exception raising scheme.
-
- Copyright (c) 1988-1996 NeXT Software, Inc. as an unpublished work.
- All rights reserved.
-*/
-
-#if defined(__OBJC2__)
-
-// This header contains definitions for Libstreams.
-#warning objc/error.h is unavailable.
-
-#endif
-
-#warning The API in this header is obsoleted by NSException et al.
-
-#ifndef _OBJC_ERROR_H_
-#define _OBJC_ERROR_H_
-
-#include <setjmp.h>
-#include <objc/objc-api.h>
-
-
-typedef struct _NXHandler { /* a node in the handler chain */
- jmp_buf jumpState; /* place to longjmp to */
- struct _NXHandler *next; /* ptr to next handler */
- int code; /* error code of exception */
- const void *data1, *data2; /* blind data for describing error */
-} NXHandler;
-
-
-/* Handles RAISE's with nowhere to longjmp to */
-typedef void NXUncaughtExceptionHandler(int code, const void *data1,
- const void *data2);
-OBJC_EXPORT NXUncaughtExceptionHandler *_NXUncaughtExceptionHandler;
-#define NXGetUncaughtExceptionHandler() _NXUncaughtExceptionHandler
-#define NXSetUncaughtExceptionHandler(proc) \
- (_NXUncaughtExceptionHandler = (proc))
-
-/* NX_DURING, NX_HANDLER and NX_ENDHANDLER are always used like:
-
- NX_DURING
- some code which might raise an error
- NX_HANDLER
- code that will be jumped to if an error occurs
- NX_ENDHANDLER
-
- If any error is raised within the first block of code, the second block
- of code will be jumped to. Typically, this code will clean up any
- resources allocated in the routine, possibly case on the error code
- and perform special processing, and default to RERAISE the error to
- the next handler. Within the scope of the handler, a local variable
- called NXLocalHandler of type NXHandler holds information about the
- error raised.
-
- It is illegal to exit the first block of code by any other means than
- NX_VALRETURN, NX_VOIDRETURN, or just falling out the bottom.
- */
-
-/* private support routines. Do not call directly. */
-OBJC_EXPORT void _NXAddHandler( NXHandler *handler );
-OBJC_EXPORT void _NXRemoveHandler( NXHandler *handler );
-
-#define NX_DURING { NXHandler NXLocalHandler; \
- _NXAddHandler(&NXLocalHandler); \
- if( !_setjmp(NXLocalHandler.jumpState) ) {
-
-#define NX_HANDLER _NXRemoveHandler(&NXLocalHandler); } else {
-
-#define NX_ENDHANDLER }}
-
-#define NX_VALRETURN(val) do { typeof(val) temp = (val); \
- _NXRemoveHandler(&NXLocalHandler); \
- return(temp); } while (0)
-
-#define NX_VOIDRETURN do { _NXRemoveHandler(&NXLocalHandler); \
- return; } while (0)
-
-/* RAISE and RERAISE are called to indicate an error condition. They
- initiate the process of jumping up the chain of handlers.
- */
-
-OBJC_EXPORT
-#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
- volatile /* never returns */
-#endif
-void _NXRaiseError(int code, const void *data1, const void *data2)
-#if defined(__GNUC__)
- __attribute__ ((noreturn))
-#endif
-;
-
-#define NX_RAISE( code, data1, data2 ) \
- _NXRaiseError( (code), (data1), (data2) )
-
-#define NX_RERAISE() _NXRaiseError( NXLocalHandler.code, \
- NXLocalHandler.data1, NXLocalHandler.data2 )
-
-/* These routines set and return the procedure which is called when
- exceptions are raised. This procedure must NEVER return. It will
- usually either longjmp, or call the uncaught exception handler.
- The default exception raiser is also declared
- */
-typedef volatile void NXExceptionRaiser(int code, const void *data1, const void *data2);
-OBJC_EXPORT void NXSetExceptionRaiser(NXExceptionRaiser *proc);
-OBJC_EXPORT NXExceptionRaiser *NXGetExceptionRaiser(void);
-OBJC_EXPORT NXExceptionRaiser NXDefaultExceptionRaiser;
-
-
-/* The error buffer is used to allocate data which is passed up to other
- handlers. Clients should clear the error buffer in their top level
- handler. The Application Kit does this.
- */
-OBJC_EXPORT void NXAllocErrorData(int size, void **data);
-OBJC_EXPORT void NXResetErrorData(void);
-
-#endif /* _OBJC_ERROR_H_ */
projects / apple / objc4.git / blobdiff