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/* Interface for the Object class for Objective-C.

   Copyright (C) 1993, 1994, 1995 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 2, 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.

You should have received a copy of the GNU General Public License

along with GCC; see the file COPYING.  If not, write to

the Free Software Foundation, 51 Franklin Street, Fifth Floor,

Boston, MA 02110-1301, USA.  */

/* As a special exception, if you link this library with files compiled

   with GCC to produce an executable, this does not cause the resulting

   executable to be covered by the GNU General Public License.  This

   exception does not however invalidate any other reasons why the

   executable file might be covered by the GNU General Public License. */

#ifndef __object_INCLUDE_GNU

#define __object_INCLUDE_GNU

#include "objc.h"

#include "typedstream.h"

#ifdef __cplusplus

extern "C" {

#endif

/*

 * 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 */

}

        /* Initializing classes and instances */

+ initialize;

- init;

        /* Creating, freeing, and copying instances */

+ new;

+ alloc;

- free;

- copy;

- shallowCopy;

- deepen;

- deepCopy;

        /* Identifying classes */

- (Class)class;

- (Class)superClass;

- (MetaClass)metaClass;

- (const char *)name;

        /* Identifying and comparing objects */

- self;

- (unsigned int)hash;

- (BOOL)isEqual:anObject;

- (int)compare:anotherObject;

        /* Testing object type */

- (BOOL)isMetaClass;

- (BOOL)isClass;

- (BOOL)isInstance;

        /* Testing inheritance relationships */

- (BOOL)isKindOf:(Class)aClassObject;

- (BOOL)isMemberOf:(Class)aClassObject;

- (BOOL)isKindOfClassNamed:(const char *)aClassName;

- (BOOL)isMemberOfClassNamed:(const char *)aClassName;

        /* Testing class functionality */

+ (BOOL)instancesRespondTo:(SEL)aSel;

- (BOOL)respondsTo:(SEL)aSel;

        /* Testing protocol conformance */

- (BOOL)conformsTo:(Protocol*)aProtocol;

        /* Introspection */

+ (IMP)instanceMethodFor:(SEL)aSel;

- (IMP)methodFor:(SEL)aSel;

+ (struct objc_method_description *)descriptionForInstanceMethod:(SEL)aSel;

- (struct objc_method_description *)descriptionForMethod:(SEL)aSel;

        /* Sending messages determined at run time */

- perform:(SEL)aSel;

- perform:(SEL)aSel with:anObject;

- perform:(SEL)aSel with:anObject1 with:anObject2;

        /* Forwarding */

- (retval_t)forward:(SEL)aSel :(arglist_t)argFrame;

- (retval_t)performv:(SEL)aSel :(arglist_t)argFrame;

        /* Posing */

+ poseAs:(Class)aClassObject;

- (Class)transmuteClassTo:(Class)aClassObject;

        /* Enforcing intentions */

- subclassResponsibility:(SEL)aSel;

- notImplemented:(SEL)aSel;

- shouldNotImplement:(SEL)aSel;

        /* Error handling */

- doesNotRecognize:(SEL)aSel;

- error:(const char *)aString, ...;

        /* Archiving */

+ (int)version;

+ setVersion:(int)aVersion;

+ (int)streamVersion: (TypedStream*)aStream;

- read: (TypedStream*)aStream;

- write: (TypedStream*)aStream;

- awake;

@end

#ifdef __cplusplus

}

#endif

#endif