libobjc/objc/deprecated/struct_objc_class.h

   1 /* This structure used to be public, but is now private to the runtime.  */
   2
   3 /*
   4 ** The compiler generates one of these structures for each class.
   5 **
   6 ** This structure is the definition for classes.
   7 **
   8 ** This structure is generated by the compiler in the executable and used by
   9 ** the run-time during normal messaging operations.  Therefore some members
  10 ** change type. The compiler generates "char* const" and places a string in
  11 ** the following member variables:  super_class.
  12 */
  13 struct objc_class {
  14   MetaClass           class_pointer;          /* Pointer to the class's
  15                                                 meta class. */
  16   struct objc_class*  super_class;            /* Pointer to the super
  17                                                 class. NULL for class
  18                                                 Object. */
  19   const char*         name;                   /* Name of the class. */
  20   long                version;                /* Unknown. */
  21   unsigned long       info;                   /* Bit mask.  See class masks
  22                                                 defined above. */
  23   long                instance_size;          /* Size in bytes of the class.
  24                                                 The sum of the class
  25                                                 definition and all super
  26                                                 class definitions. */
  27   struct objc_ivar_list* ivars;               /* Pointer to a structure that
  28                                                 describes the instance
  29                                                 variables in the class
  30                                                 definition.  NULL indicates
  31                                                 no instance variables.  Does
  32                                                 not include super class
  33                                                 variables. */
  34   struct objc_method_list*  methods;          /* Linked list of instance
  35                                                 methods defined for the
  36                                                 class. */
  37   struct sarray *    dtable;                  /* Pointer to instance
  38                                                  method dispatch table. */
  39   struct objc_class* subclass_list;           /* Subclasses */
  40   struct objc_class* sibling_class;
  41
  42   struct objc_protocol_list *protocols;       /* Protocols conformed to */
  43   void* gc_object_type;
  44 };