runtime/objc.h

   1 /*
   2  * Copyright (c) 1999-2007 Apple Inc.  All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  *      objc.h
  25  *      Copyright 1988-1996, NeXT Software, Inc.
  26  */
  27
  28 #ifndef _OBJC_OBJC_H_
  29 #define _OBJC_OBJC_H_
  30
  31 #import <objc/objc-api.h>               // for OBJC_EXPORT
  32 #import <sys/types.h>
  33
  34
  35 typedef struct objc_class *Class;
  36 typedef struct objc_object {
  37     Class isa;
  38 } *id;
  39
  40
  41 typedef struct objc_selector    *SEL;
  42 typedef id                      (*IMP)(id, SEL, ...);
  43 typedef signed char             BOOL;
  44 // BOOL is explicitly signed so @encode(BOOL) == "c" rather than "C"
  45 // even if -funsigned-char is used.
  46 #define OBJC_BOOL_DEFINED
  47
  48
  49 #define YES             (BOOL)1
  50 #define NO              (BOOL)0
  51
  52 #ifndef Nil
  53 #define Nil __DARWIN_NULL       /* id of Nil class */
  54 #endif
  55
  56 #ifndef nil
  57 #define nil __DARWIN_NULL       /* id of Nil instance */
  58 #endif
  59
  60 #ifndef __OBJC_GC__
  61 #define __strong /* empty */
  62 #endif
  63
  64 OBJC_EXPORT const char *sel_getName(SEL sel);
  65 OBJC_EXPORT SEL sel_registerName(const char *str);
  66 OBJC_EXPORT const char *object_getClassName(id obj);
  67 OBJC_EXPORT void *object_getIndexedIvars(id obj);
  68
  69
  70 #if !__OBJC2__
  71
  72 // The following declarations are provided here for source compatibility.
  73
  74 #if defined(__LP64__)
  75     typedef long arith_t;
  76     typedef unsigned long uarith_t;
  77 #   define ARITH_SHIFT 32
  78 #else
  79     typedef int arith_t;
  80     typedef unsigned uarith_t;
  81 #   define ARITH_SHIFT 16
  82 #endif
  83
  84 OBJC_EXPORT BOOL sel_isMapped(SEL sel);
  85 OBJC_EXPORT SEL sel_getUid(const char *str);
  86
  87 typedef char *STR;
  88
  89 #define ISSELECTOR(sel) sel_isMapped(sel)
  90 #define SELNAME(sel)    sel_getName(sel)
  91 #define SELUID(str)     sel_getUid(str)
  92 #define NAMEOF(obj)     object_getClassName(obj)
  93 #define IV(obj)         object_getIndexedIvars(obj)
  94
  95 #endif
  96
  97 #endif  /* _OBJC_OBJC_H_ */