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/* Interface for the Object class for Objective-C.
Copyright (C) 1993-2021 Free Software Foundation, Inc.
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
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
<>. */
#ifndef __object_INCLUDE_GNU
#define __object_INCLUDE_GNU
#include "objc.h"
#ifdef __cplusplus
extern "C" {
/* The Object class is a very minimal root class included with the
runtime. It is used as superclass for the two classes included
with the runtime, Protocol and NXConstantString.
Because Objective-C allows multiple root classes, you can define
your own root class, different from Object.
In particular, a Foundation library (such as GNUstep Base) is
expected to provide its own root class (typically called NSObject),
fully integrated with the library's own high-level features. It is
expected that you should always use and interact with NSObject, and
mostly ignore Object. */
/* All classes are derived from Object. As such, this is the overhead
tacked onto those objects. */
@interface Object
Class isa; /* A pointer to the instance's class structure. */
- (Class)class;
- (BOOL)isEqual: (id)anObject;
#ifdef __cplusplus