8sa1-gcc/gcc/objc/objc-api.h

/* GNU Objective-C Runtime API.
   Copyright (C) 1993 Free Software Foundation, Inc.

This file is part of GNU CC.

GNU CC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
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 of MERCHANTABILITY or
or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
License for more details.

You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING.  If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, 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_api_INCLUDE_GNU
#define __objc_api_INCLUDE_GNU

#include <stdlib.h>
#include <objc/objc.h>

static const ARGSIZE = 96;		/* for `method_get_argsize()' */

extern void (*_objc_error)(id object, const char *format, va_list args);

/*
** This is a hook which is called by objc_lookup_class and
** objc_get_class if the runtime is not able to find the class.
** This may e.g. try to load in the class using dynamic loading.
** The function is guaranteed to be passed a non-NULL name string.
*/
extern Class_t (*_objc_lookup_class)(const char *name);

extern id (*_objc_object_alloc)(Class_t class);

extern id (*_objc_object_copy)(id object);

extern id (*_objc_object_dispose)(id object);

Method_t class_get_class_method(MetaClass_t class, SEL aSel);

Method_t class_get_instance_method(Class_t class, SEL aSel);

Class_t class_pose_as(Class_t impostor, Class_t superclass);

Class_t objc_get_class(const char *name);

Class_t objc_lookup_class(const char *name);

const char *sel_get_name(SEL selector);

SEL sel_get_uid(const char *name);

SEL sel_register_name(const char *name);

BOOL sel_is_mapped (SEL aSel);

extern inline id
class_create_instance(Class_t class)
{
  id new = nil;
  if (CLS_ISCLASS(class))
    new = (_objc_object_alloc
           ?(*_objc_object_alloc)(class)
           :(id)malloc(class->instance_size));
  if (new!=nil)
    new->class_pointer = class;
  return new;
}

static inline const char *
class_get_class_name(Class_t class)
{
  return CLS_ISCLASS(class)?class->name:((class==Nil)?"Nil":0);
}

static inline long
class_get_instance_size(Class_t class)
{
  return CLS_ISCLASS(class)?class->instance_size:0;
}

static inline MetaClass_t
class_get_meta_class(Class_t class)
{
  return CLS_ISCLASS(class)?class->class_pointer:Nil;
}

static inline Class_t
class_get_super_class(Class_t class)
{
  return CLS_ISCLASS(class)?class->super_class:Nil;
}

static inline int
class_get_version(Class_t class)
{
  return CLS_ISCLASS(class)?class->version:-1;
}

static inline BOOL
class_is_class(Class_t class)
{
  return CLS_ISCLASS(class);
}

static inline BOOL
class_is_meta_class(Class_t class)
{
  return CLS_ISMETA(class);
}


static inline void
class_set_version(Class_t class, long version)
{
  if (CLS_ISCLASS(class))
    class->version = version;
}

static inline unsigned int
method_get_argsize(Method_t method)
{
  return ARGSIZE;		/* This was a magic number (96)... */
}

static inline IMP
method_get_imp(Method_t method)
{
  return (method!=METHOD_NULL)?method->method_imp:(IMP)0;
}

IMP get_imp (Class_t class, SEL sel);

extern inline id
object_copy(id object)
{
  if ((object!=nil)&&CLS_ISCLASS(object->class_pointer))
    {
      if (_objc_object_copy)
        return (*_objc_object_copy)(object);
      else
        {
          id copy = class_create_instance(object->class_pointer);
          if (copy!=nil)
            bcopy(object, copy, object->class_pointer->instance_size);
          return copy;
        }
      return nil;
    }
}

extern inline id
object_dispose(id object)
{
  if ((object!=nil)&&CLS_ISCLASS(object->class_pointer))
    {
      if (_objc_object_dispose)
        (*_objc_object_dispose)(object);
      else
        free(object);
    }
  return nil;
}

static inline Class_t
object_get_class(id object)
{
  return ((object!=nil)
	  ? (CLS_ISCLASS(object->class_pointer)
	     ? object->class_pointer
	     : (CLS_ISMETA(object->class_pointer)
		? (Class_t)object
		: Nil))
	  : Nil);
}

static inline const char *
object_get_class_name(id object)
{
  return ((object!=nil)?(CLS_ISCLASS(object->class_pointer)
                         ?object->class_pointer->name
                         :((Class_t)object)->name)
                       :"Nil");
}

static inline MetaClass_t
object_get_meta_class(id object)
{
  return ((object!=nil)?(CLS_ISCLASS(object->class_pointer)
                         ?object->class_pointer->class_pointer
                         :(CLS_ISMETA(object->class_pointer)
                           ?object->class_pointer
                           :Nil))
                       :Nil);
}

static inline Class_t
object_get_super_class(id object)
{
  return ((object!=nil)?(CLS_ISCLASS(object->class_pointer)
                         ?object->class_pointer->super_class
                         :(CLS_ISMETA(object->class_pointer)
                           ?((Class_t)object)->super_class
                           :Nil))
                       :Nil);
}

static inline BOOL
object_is_class(id object)
{
  return CLS_ISCLASS((Class_t)object);
}

static inline BOOL
object_is_instance(id object)
{
  return (object!=nil)&&CLS_ISCLASS(object->class_pointer);
}

static inline BOOL
object_is_meta_class(id object)
{
  return CLS_ISMETA((Class_t)object);
}


#endif /* not __objc_api_INCLUDE_GNU */