objc.h   [plain text]

/*
 * Copyright (c) 1999-2007 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@
 */
/*
 *	objc.h
 *	Copyright 1988-1996, NeXT Software, Inc.
 */

#ifndef _OBJC_OBJC_H_
#define _OBJC_OBJC_H_

#include <sys/types.h>      // for __DARWIN_NULL
#include <Availability.h>
#include <objc/objc-api.h>


typedef struct objc_class *Class;
typedef struct objc_object {
    Class isa;
} *id;


typedef struct objc_selector 	*SEL;

#if !OBJC_OLD_DISPATCH_PROTOTYPES
typedef void (*IMP)(void /* id, SEL, ... */ ); 
#else
typedef id (*IMP)(id, SEL, ...); 
#endif

#define OBJC_BOOL_DEFINED

typedef signed char		BOOL; 
// BOOL is explicitly signed so @encode(BOOL) == "c" rather than "C" 
// even if -funsigned-char is used.

#if __has_feature(objc_bool)
#define YES             __objc_yes
#define NO              __objc_no
#else
#define YES             ((BOOL)1)
#define NO              ((BOOL)0)
#endif

#ifndef Nil
# if __has_feature(cxx_nullptr)
#   define Nil nullptr
# else
#   define Nil __DARWIN_NULL
# endif
#endif

#ifndef nil
# if __has_feature(cxx_nullptr)
#   define nil nullptr
# else
#   define nil __DARWIN_NULL
# endif
#endif

#if ! (defined(__OBJC_GC__)  ||  __has_feature(objc_arr))
#define __strong /* empty */
#endif

#if !__has_feature(objc_arr)
#define __unsafe_unretained /* empty */
#define __autoreleasing /* empty */
#endif


OBJC_EXPORT const char *sel_getName(SEL sel)
    __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);
OBJC_EXPORT SEL sel_registerName(const char *str)
    __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);
OBJC_EXPORT const char *object_getClassName(id obj)
    __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);
OBJC_EXPORT void *object_getIndexedIvars(id obj)
    __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);
OBJC_EXPORT BOOL sel_isMapped(SEL sel)
    __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);
OBJC_EXPORT SEL sel_getUid(const char *str)
    __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);


// Obsolete ARC conversions. Deprecation forthcoming.
// Use CFBridgingRetain, CFBridgingRelease, and __bridge casts instead.

typedef const void* objc_objectptr_t;

#if __has_feature(objc_arc)
#   define objc_retainedObject(o) ((__bridge_transfer id)(objc_objectptr_t)(o))
#   define objc_unretainedObject(o) ((__bridge id)(objc_objectptr_t)(o))
#   define objc_unretainedPointer(o) ((__bridge objc_objectptr_t)(id)(o))
#else
#   define objc_retainedObject(o) ((id)(objc_objectptr_t)(o))
#   define objc_unretainedObject(o) ((id)(objc_objectptr_t)(o))
#   define objc_unretainedPointer(o) ((objc_objectptr_t)(id)(o))
#endif


#if !__OBJC2__

// The following declarations are provided here for source compatibility.

#if defined(__LP64__)
    typedef long arith_t;
    typedef unsigned long uarith_t;
#   define ARITH_SHIFT 32
#else
    typedef int arith_t;
    typedef unsigned uarith_t;
#   define ARITH_SHIFT 16
#endif

typedef char *STR;

#define ISSELECTOR(sel) sel_isMapped(sel)
#define SELNAME(sel)	sel_getName(sel)
#define SELUID(str)	sel_getUid(str)
#define NAMEOF(obj)     object_getClassName(obj)
#define IV(obj)         object_getIndexedIvars(obj)

#endif

#endif  /* _OBJC_OBJC_H_ */