runtime/objc.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  *      objc.h
  27  *      Copyright 1988-1996, NeXT Software, Inc.
  28  */
  29
  30 #ifndef _OBJC_OBJC_H_
  31 #define _OBJC_OBJC_H_
  32
  33 #import <objc/objc-api.h>               // for OBJC_EXPORT
  34
  35 typedef struct objc_class *Class;
  36
  37 typedef struct objc_object {
  38         Class isa;
  39 } *id;
  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
  47
  48 #define YES             (BOOL)1
  49 #define NO              (BOOL)0
  50
  51 #ifndef Nil
  52 #define Nil 0           /* id of Nil class */
  53 #endif
  54
  55 #ifndef nil
  56 #define nil 0           /* id of Nil instance */
  57 #endif
  58
  59
  60 #if !defined(STRICT_OPENSTEP)
  61
  62 typedef char *STR;
  63
  64 OBJC_EXPORT BOOL sel_isMapped(SEL sel);
  65 OBJC_EXPORT const char *sel_getName(SEL sel);
  66 OBJC_EXPORT SEL sel_getUid(const char *str);
  67 OBJC_EXPORT SEL sel_registerName(const char *str);
  68 OBJC_EXPORT const char *object_getClassName(id obj);
  69 OBJC_EXPORT void *object_getIndexedIvars(id obj);
  70
  71 #define ISSELECTOR(sel) sel_isMapped(sel)
  72 #define SELNAME(sel)    sel_getName(sel)
  73 #define SELUID(str)     sel_getUid(str)
  74 #define NAMEOF(obj)     object_getClassName(obj)
  75 #define IV(obj)         object_getIndexedIvars(obj)
  76
  77 #if defined(__osf__) && defined(__alpha__)
  78     typedef long arith_t;
  79     typedef unsigned long uarith_t;
  80 #   define ARITH_SHIFT 32
  81 #else
  82     typedef int arith_t;
  83     typedef unsigned uarith_t;
  84 #   define ARITH_SHIFT 16
  85 #endif
  86
  87 #endif  /* !STRICT_OPENSTEP */
  88
  89 #endif /* _OBJC_OBJC_H_ */