mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-23 15:32:26 +00:00
110 lines
4.7 KiB
C++
110 lines
4.7 KiB
C++
/* GNU Objective C Runtime native exceptions
|
|
Copyright (C) 2010-2016 Free Software Foundation, Inc.
|
|
Contributed by Nicola Pero <nicola.pero@meta-innovation.com>
|
|
|
|
This file is part of GCC.
|
|
|
|
GCC is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3, or (at your option)
|
|
any later version.
|
|
|
|
GCC is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef __objc_exception_INCLUDE_GNU
|
|
#define __objc_exception_INCLUDE_GNU
|
|
|
|
#include "objc.h"
|
|
#include "objc-decls.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* 'objc_exception_throw' throws the exception 'exception', which is
|
|
an exception object.
|
|
|
|
Calls to 'objc_exception_throw' are automatically generated by the
|
|
compiler: an Objective-C "@throw exception;" statement gets
|
|
compiled into the equivalent of "objc_exception_throw
|
|
(exception);".
|
|
|
|
'objc_exception_throw' searches for a @catch() that can catch the
|
|
exception. By default, @catch (MyClass object) will catch all
|
|
exception objects that are of class MyClass or of a subclass of
|
|
MyClass; if the exception object is 'nil', then the exception can
|
|
only be caught with a catch-all exception handler where no
|
|
exception class is specified (such as @catch(id object)). This
|
|
behaviour can be customized by setting an 'objc_exception_matcher'
|
|
function (using objc_set_exception_matcher(), see below); if one is
|
|
set, it is used instead of the default one.
|
|
|
|
If the exception is uncaught (there is no @catch() to catch it),
|
|
the program aborts. It is possible to customize this behaviour by
|
|
setting an 'objc_uncaught_exception_handler' function (using
|
|
objc_set_uncaught_exception_handler(), see below); if one is set,
|
|
it is executed before abort() is called. An uncaught exception
|
|
handler is expected to never return. */
|
|
objc_EXPORT void objc_exception_throw (id exception);
|
|
|
|
/* Compatibility note: the Apple/NeXT runtime seems to also have
|
|
objc_exception_rethrow(), objc_begin_catch() and objc_end_catch().
|
|
Currently the GNU runtime does not use them. */
|
|
|
|
/* The following functions allow customizing to a certain extent the
|
|
exception handling. They are not thread safe and should be called
|
|
during the program initialization before threads are started. They
|
|
are mostly reserved for "Foundation" libraries; in the case of
|
|
GNUstep, GNUstep Base may be using these functions to improve the
|
|
standard exception handling. You probably shouldn't use these
|
|
functions unless you are writing your own Foundation library. */
|
|
|
|
/* Compatibility note: objc_set_exception_preprocessor() (available on
|
|
the Apple/NeXT runtime) is not available on the GNU runtime. */
|
|
|
|
/* An 'objc_exception_matcher' function is used to match an exception
|
|
to a @catch clause. 'catch_class' is the class of objects caught
|
|
by the @catch clause (for example, in "@catch (Object *o)", the
|
|
catch_class is Object). It should return 1 if the exception should
|
|
be caught by a @catch with a catch_class argument, and 0 if
|
|
not. */
|
|
typedef int (*objc_exception_matcher)(Class catch_class, id exception);
|
|
|
|
/* Sets a new exception matcher function, and returns the previous
|
|
exception matcher function. This function is not safe to call in a
|
|
multi-threaded environment because other threads may be trying to
|
|
invoke the exception matcher while you change it! */
|
|
objc_EXPORT objc_exception_matcher
|
|
objc_setExceptionMatcher (objc_exception_matcher new_matcher);
|
|
|
|
|
|
/* An 'objc_uncaught_exception_handler' function is a function that
|
|
handles uncaught exceptions. It should never return. */
|
|
typedef void (*objc_uncaught_exception_handler)(id exception);
|
|
|
|
/* Sets a new uncaught exception handler function, and returns the
|
|
previous exception handler function. This function is not safe to
|
|
call in a multi-threaded environment because other threads may be
|
|
trying to invoke the uncaught exception handler while you change
|
|
it. */
|
|
objc_EXPORT objc_uncaught_exception_handler
|
|
objc_setUncaughtExceptionHandler (objc_uncaught_exception_handler new_handler);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* not __objc_exception_INCLUDE_GNU */
|