libobjc/objc/Object.h

   1 /* Interface for the Object class for Objective-C.
   2    Copyright (C) 1993, 1994, 1995, 2009, 2010 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it
   7 under the terms of the GNU General Public License as published by the
   8 Free Software Foundation; either version 3, or (at your option) any
   9 later version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT
  12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  14 License for more details.
  15
  16 Under Section 7 of GPL version 3, you are granted additional
  17 permissions described in the GCC Runtime Library Exception, version
  18 3.1, as published by the Free Software Foundation.
  19
  20 You should have received a copy of the GNU General Public License and
  21 a copy of the GCC Runtime Library Exception along with this program;
  22 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 <http://www.gnu.org/licenses/>.  */
  24
  25
  26 #ifndef __object_INCLUDE_GNU
  27 #define __object_INCLUDE_GNU
  28
  29 #include "objc.h"
  30 #include "typedstream.h"
  31
  32 #ifdef __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 /* The Object class is a minimal (but fully functional) root class
  37    included with the runtime.
  38
  39    It is mostly for testing the runtime; very handy in configure
  40    tests, and when writing language/runtime testcases.
  41
  42    Because Objective-C allows multiple root classes, a Foundation
  43    library (such as GNUstep Base) is expected to provide its own root
  44    class (typically called NSObject), fully integrated with the
  45    library's own high-level features.  If you are using such a
  46    Foundation library, you should most likely use its root class for
  47    everything and ignore Object.
  48 */
  49
  50 /*
  51   All classes are derived from Object.  As such,
  52   this is the overhead tacked onto those objects.
  53  */
  54 @interface Object
  55 {
  56     Class       isa;    /* A pointer to the instance's class structure */
  57 }
  58
  59         /* Initializing classes and instances */
  60 + initialize;
  61 - init;
  62
  63         /* Creating, freeing, and copying instances */
  64 + new;
  65 + alloc;
  66 - free;
  67 - copy;
  68 - shallowCopy;
  69 - deepen;
  70 - deepCopy;
  71
  72         /* Identifying classes */
  73 - (Class)class;
  74 - (Class)superClass;
  75 - (MetaClass)metaClass;
  76 - (const char *)name;
  77
  78         /* Identifying and comparing objects */
  79 - self;
  80 - (unsigned int)hash;
  81 - (BOOL)isEqual:anObject;
  82 - (int)compare:(id)anotherObject;
  83
  84         /* Testing object type */
  85 - (BOOL)isMetaClass;
  86 - (BOOL)isClass;
  87 - (BOOL)isInstance;
  88
  89         /* Testing inheritance relationships */
  90 - (BOOL)isKindOf:(Class)aClassObject;
  91 - (BOOL)isMemberOf:(Class)aClassObject;
  92 - (BOOL)isKindOfClassNamed:(const char *)aClassName;
  93 - (BOOL)isMemberOfClassNamed:(const char *)aClassName;
  94
  95         /* Testing class functionality */
  96 + (BOOL)instancesRespondTo:(SEL)aSel;
  97 - (BOOL)respondsTo:(SEL)aSel;
  98
  99         /* Testing protocol conformance */
 100 - (BOOL)conformsTo:(Protocol*)aProtocol;
 101
 102         /* Introspection */
 103 + (IMP)instanceMethodFor:(SEL)aSel;
 104 - (IMP)methodFor:(SEL)aSel;
 105 + (struct objc_method_description *)descriptionForInstanceMethod:(SEL)aSel;
 106 - (struct objc_method_description *)descriptionForMethod:(SEL)aSel;
 107
 108         /* Sending messages determined at run time */
 109 - perform:(SEL)aSel;
 110 - perform:(SEL)aSel with:anObject;
 111 - perform:(SEL)aSel with:anObject1 with:anObject2;
 112
 113         /* Forwarding */
 114 - (retval_t)forward:(SEL)aSel :(arglist_t)argFrame;
 115 - (retval_t)performv:(SEL)aSel :(arglist_t)argFrame;
 116
 117         /* Posing */
 118 + poseAs:(Class)aClassObject;
 119 - (Class)transmuteClassTo:(Class)aClassObject;
 120
 121         /* Enforcing intentions */
 122 - subclassResponsibility:(SEL)aSel;
 123 - notImplemented:(SEL)aSel;
 124 - shouldNotImplement:(SEL)aSel;
 125
 126         /* Error handling */
 127 - doesNotRecognize:(SEL)aSel;
 128 - error:(const char *)aString, ...;
 129
 130         /* Archiving */
 131 + (int)version;
 132 + setVersion:(int)aVersion;
 133 @end
 134
 135 #include "deprecated/Object.h"
 136
 137 #ifdef __cplusplus
 138 }
 139 #endif
 140
 141 #endif