runtime/objc-api.h

   1 /*
   2  * Copyright (c) 1999-2006 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 // Copyright 1988-1996 NeXT Software, Inc.
  24
  25 #ifndef _OBJC_OBJC_API_H_
  26 #define _OBJC_OBJC_API_H_
  27
  28 #include <AvailabilityMacros.h>
  29 #include <TargetConditionals.h>
  30
  31 #ifndef __has_feature
  32 #   define __has_feature(x) 0
  33 #endif
  34
  35 /*
  36  * OBJC_API_VERSION 0 or undef: Tiger and earlier API only
  37  * OBJC_API_VERSION 2: Leopard and later API available
  38  */
  39 #if !defined(OBJC_API_VERSION)
  40 #   if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
  41 #       define OBJC_API_VERSION 0
  42 #   else
  43 #       define OBJC_API_VERSION 2
  44 #   endif
  45 #endif
  46
  47 /* OBJC2_UNAVAILABLE: unavailable in objc 2.0, deprecated in Leopard */
  48 #if !defined(OBJC2_UNAVAILABLE)
  49 #   if __OBJC2__
  50 #       define OBJC2_UNAVAILABLE UNAVAILABLE_ATTRIBUTE
  51 #   else
  52 #       define OBJC2_UNAVAILABLE DEPRECATED_IN_MAC_OS_X_VERSION_10_5_AND_LATER
  53 #   endif
  54 #endif
  55
  56 /* OBJC_ARC_UNAVAILABLE: unavailable with -fobjc-arc */
  57 #if !defined(OBJC_ARC_UNAVAILABLE)
  58 #   if __has_feature(objc_arr)
  59 #       define OBJC_ARC_UNAVAILABLE __attribute__((unavailable("not available in automatic reference counting mode")))
  60 #   else
  61 #       define OBJC_ARC_UNAVAILABLE
  62 #   endif
  63 #endif
  64
  65 #if !defined(OBJC_EXTERN)
  66 #   if defined(__cplusplus)
  67 #       define OBJC_EXTERN extern "C"
  68 #   else
  69 #       define OBJC_EXTERN extern
  70 #   endif
  71 #endif
  72
  73 #if !defined(OBJC_VISIBLE)
  74 #   if TARGET_OS_WIN32
  75 #       if defined(BUILDING_OBJC)
  76 #           define OBJC_VISIBLE __declspec(dllexport)
  77 #       else
  78 #           define OBJC_VISIBLE __declspec(dllimport)
  79 #       endif
  80 #   else
  81 #       define OBJC_VISIBLE  __attribute__((visibility("default")))
  82 #   endif
  83 #endif
  84
  85 #if !defined(OBJC_EXPORT)
  86 #   define OBJC_EXPORT  OBJC_EXTERN OBJC_VISIBLE
  87 #endif
  88
  89 #if !defined(OBJC_IMPORT)
  90 #   define OBJC_IMPORT extern
  91 #endif
  92
  93 #ifndef __DARWIN_NULL
  94 #define __DARWIN_NULL NULL
  95 #endif
  96
  97 #if !defined(OBJC_INLINE)
  98 #   define OBJC_INLINE __inline
  99 #endif
 100
 101 #endif