/* Basic data types for Objective C.   Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.This file is part of GNU CC.GNU CC is free software; you can redistribute it and/or modifyit under the terms of the GNU General Public License as published bythe Free Software Foundation; either version 2, or (at your option)any later version.GNU CC is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See theGNU General Public License for more details.You should have received a copy of the GNU General Public Licensealong with GNU CC; see the file COPYING.  If not, write tothe Free Software Foundation, 59 Temple Place - Suite 330,Boston, MA 02111-1307, USA.  *//* As a special exception, if you link this library with files   compiled with GCC to produce an executable, this does not cause   the resulting executable to be covered by the GNU General Public License.   This exception does not however invalidate any other reasons why   the executable file might be covered by the GNU General Public License.  */#ifndef __objc_INCLUDE_GNU#define __objc_INCLUDE_GNU#ifdef __cplusplusextern "C" {#endif#include <stddef.h>/*** Definition of the boolean type.  */#ifdef __vxworkstypedef int BOOL;#elsetypedef unsigned char  BOOL;#endif#define YES   (BOOL)1#define NO    (BOOL)0/*** Definition of a selector.  Selectors themselves are not unique, but** the sel_id is a unique identifier.*/typedef const struct objc_selector {  void *sel_id;  const char *sel_types;} *SEL;inline static BOOLsel_eq (SEL s1, SEL s2){  if (s1 == 0 || s2 == 0)    return s1 == s2;  else    return s1->sel_id == s2->sel_id;}/*** ObjC uses this typedef for untyped instances.*/typedef struct objc_object {  struct objc_class*  class_pointer;} *id;/*** Definition of method type.  When retrieving the implementation of a** method, this is type of the pointer returned*/typedef id (*IMP)(id, SEL, ...); /*** More simple types...*/#define nil (id)0                               /* id of Nil instance */#define Nil (Class)0                            /* id of Nil class */typedef char *STR;                              /* String alias *//*** The compiler generates one of these structures for each class.  ** ** This structure is the definition for classes. ** ** This structure is generated by the compiler in the executable and used by** the run-time during normal messaging operations.  Therefore some members** change type. The compiler generates "char* const" and places a string in** the following member variables:  super_class. */typedef struct objc_class *MetaClass;typedef struct objc_class *Class;struct objc_class {       MetaClass           class_pointer;          /* Pointer to the class's                                                meta class. */  struct objc_class*  super_class;            /* Pointer to the super                                                 class. NULL for class                                                 Object. */  const char*         name;                   /* Name of the class. */  long                version;                /* Unknown. */  unsigned long       info;                   /* Bit mask.  See class masks                                                 defined above. */  long                instance_size;          /* Size in bytes of the class.                                                  The sum of the class 						definition and all super 						class definitions. */  struct objc_ivar_list* ivars;               /* Pointer to a structure that                                                describes the instance                                                 variables in the class                                                definition.  NULL indicates                                                no instance variables.  Does                                                not include super class                                                variables. */  struct objc_method_list*  methods;          /* Linked list of instance                                                methods defined for the                                                 class. */  struct sarray *    dtable;                  /* Pointer to instance 					         method dispatch table. */    struct objc_class* subclass_list;           /* Subclasses */  struct objc_class* sibling_class;  struct objc_protocol_list *protocols;	      /* Protocols conformed to */  void* gc_object_type;};#ifndef __OBJC__typedef struct objc_protocol {  struct objc_class* class_pointer;  char *protocol_name;  struct objc_protocol_list *protocol_list;  struct objc_method_description_list *instance_methods, *class_methods; } Protocol; #else /* __OBJC__ */@class Protocol;#endif typedef void* retval_t;		/* return value */typedef void(*apply_t)(void);	/* function pointer */typedef union {  char *arg_ptr;  char arg_regs[sizeof (char*)];} *arglist_t;			/* argument frame */IMP objc_msg_lookup(id receiver, SEL op);#ifdef __cplusplus}#endif#endif /* not __objc_INCLUDE_GNU */