1*e4b17023SJohn Marino /* Interface for the Object class for Objective-C. 2*e4b17023SJohn Marino Copyright (C) 1993, 1994, 1995, 2009, 2010 Free Software Foundation, Inc. 3*e4b17023SJohn Marino 4*e4b17023SJohn Marino This file is part of GCC. 5*e4b17023SJohn Marino 6*e4b17023SJohn Marino GCC is free software; you can redistribute it and/or modify it 7*e4b17023SJohn Marino under the terms of the GNU General Public License as published by the 8*e4b17023SJohn Marino Free Software Foundation; either version 3, or (at your option) any 9*e4b17023SJohn Marino later version. 10*e4b17023SJohn Marino 11*e4b17023SJohn Marino GCC is distributed in the hope that it will be useful, but WITHOUT 12*e4b17023SJohn Marino ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13*e4b17023SJohn Marino FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 14*e4b17023SJohn Marino License for more details. 15*e4b17023SJohn Marino 16*e4b17023SJohn Marino Under Section 7 of GPL version 3, you are granted additional 17*e4b17023SJohn Marino permissions described in the GCC Runtime Library Exception, version 18*e4b17023SJohn Marino 3.1, as published by the Free Software Foundation. 19*e4b17023SJohn Marino 20*e4b17023SJohn Marino You should have received a copy of the GNU General Public License and 21*e4b17023SJohn Marino a copy of the GCC Runtime Library Exception along with this program; 22*e4b17023SJohn Marino see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23*e4b17023SJohn Marino <http://www.gnu.org/licenses/>. */ 24*e4b17023SJohn Marino 25*e4b17023SJohn Marino 26*e4b17023SJohn Marino #ifndef __object_INCLUDE_GNU 27*e4b17023SJohn Marino #define __object_INCLUDE_GNU 28*e4b17023SJohn Marino 29*e4b17023SJohn Marino #include "objc.h" 30*e4b17023SJohn Marino 31*e4b17023SJohn Marino #ifdef __cplusplus 32*e4b17023SJohn Marino extern "C" { 33*e4b17023SJohn Marino #endif 34*e4b17023SJohn Marino 35*e4b17023SJohn Marino /* The Object class is a very minimal root class included with the 36*e4b17023SJohn Marino runtime. It is used as superclass for the two classes included 37*e4b17023SJohn Marino with the runtime, Protocol and NXConstantString. 38*e4b17023SJohn Marino 39*e4b17023SJohn Marino Because Objective-C allows multiple root classes, you can define 40*e4b17023SJohn Marino your own root class, different from Object. 41*e4b17023SJohn Marino 42*e4b17023SJohn Marino In particular, a Foundation library (such as GNUstep Base) is 43*e4b17023SJohn Marino expected to provide its own root class (typically called NSObject), 44*e4b17023SJohn Marino fully integrated with the library's own high-level features. It is 45*e4b17023SJohn Marino expected that you should always use and interact with NSObject, and 46*e4b17023SJohn Marino mostly ignore Object. */ 47*e4b17023SJohn Marino 48*e4b17023SJohn Marino /* All classes are derived from Object. As such, this is the overhead 49*e4b17023SJohn Marino tacked onto those objects. */ 50*e4b17023SJohn Marino @interface Object 51*e4b17023SJohn Marino { 52*e4b17023SJohn Marino Class isa; /* A pointer to the instance's class structure. */ 53*e4b17023SJohn Marino } 54*e4b17023SJohn Marino - (Class)class; 55*e4b17023SJohn Marino - (BOOL)isEqual: (id)anObject; 56*e4b17023SJohn Marino @end 57*e4b17023SJohn Marino 58*e4b17023SJohn Marino #ifdef __cplusplus 59*e4b17023SJohn Marino } 60*e4b17023SJohn Marino #endif 61*e4b17023SJohn Marino 62*e4b17023SJohn Marino #endif 63