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/* GSObjCRuntime.h
Copyright (C) 2013 Free Software Foundation, Inc.
Written by: Stefan Bidigaray
Date: July, 2013
This file is part of GNUstep CoreBase library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; see the file COPYING.LIB.
If not, see <http://www.gnu.org/licenses/> or write to the
Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef __GSOBJCRUNTIME_H__
#define __GSOBJCRUNTIME_H__
#include "config.h"
#include "CoreFoundation/CFBase.h"
#include "GSPrivate.h"
GS_PRIVATE const void *CFTypeRetainCallBack (CFAllocatorRef alloc,
const void *value);
GS_PRIVATE void CFTypeReleaseCallBack (CFAllocatorRef alloc, const void *value);
#if HAVE_OBJC_RUNTIME_H
#define BOOL OBJC_BOOL
#include <objc/runtime.h>
#undef BOOL
extern void **__CFRuntimeObjCClassTable;
extern UInt32 __CFRuntimeClassTableCount;
CF_INLINE void *
__CFISAForTypeID (CFTypeID typeID)
{
return (__CFRuntimeObjCClassTable && typeID < __CFRuntimeClassTableCount ?
__CFRuntimeObjCClassTable[typeID] : NULL);
}
CF_INLINE Boolean
CF_IS_OBJC (CFTypeID typeID, const void *obj)
{
#if defined(OBJC_SMALL_OBJECT_MASK)
return (obj && (((unsigned long)obj & OBJC_SMALL_OBJECT_MASK) != 0
|| typeID >= __CFRuntimeClassTableCount
|| object_getClass ((id) obj) != __CFISAForTypeID (typeID)));
#else
return (obj && (typeID >= __CFRuntimeClassTableCount
|| object_getClass ((id) obj) != __CFISAForTypeID (typeID)));
#endif
}
#define CF_OBJC_FUNCDISPATCHV(typeID, rettype, obj, sel, ...) \
do { \
if (CF_IS_OBJC(typeID, obj)) \
{ \
rettype (*imp)(id, SEL, ...); \
static SEL s = NULL; \
if (!s) \
s = sel_registerName(sel); \
imp = (rettype (*)(id, SEL, ...)) \
class_getMethodImplementation (object_getClass((id)obj), s); \
return (rettype)imp((id)obj, s, ##__VA_ARGS__); \
} \
} while(0)
#define CF_OBJC_FUNCDISPATCHV_RETAINED(typeID, rettype, obj, sel, ...) \
do { \
if (CF_IS_OBJC(typeID, obj)) \
{ \
rettype (*imp)(id, SEL, ...); \
static SEL s = NULL; \
if (!s) \
s = sel_registerName(sel); \
imp = (rettype (*)(id, SEL, ...)) \
class_getMethodImplementation (object_getClass((id)obj), s); \
rettype val = imp((id)obj, s, ##__VA_ARGS__); \
if (val != NULL) CFRetain(val); \
return val; \
} \
} while(0)
#define CF_OBJC_CALLV(rettype, var, obj, sel, ...) \
do { \
rettype (*imp)(id, SEL, ...); \
static SEL s = NULL; \
if (!s) \
s = sel_registerName(sel); \
imp = (rettype (*)(id, SEL, ...)) \
class_getMethodImplementation (object_getClass((id)obj), s); \
var = imp((id)obj, s, ##__VA_ARGS__); \
} while (0)
#define CF_OBJC_VOIDCALLV(obj, sel, ...) \
do { \
void (*imp)(id, SEL, ...); \
static SEL s = NULL; \
if (!s) \
s = sel_registerName(sel); \
imp = (void (*)(id, SEL, ...)) \
class_getMethodImplementation (object_getClass((id)obj), s); \
imp((id)obj, s, ##__VA_ARGS__); \
} while (0)
#else
#define __CFISAForTypeID(typeID) (NULL)
#define CF_IS_OBJC(typeID, obj) (0)
#define CF_OBJC_FUNCDISPATCHV(typeID, rettype, obj, sel, ...)
#define CF_OBJC_FUNCDISPATCHV_RETAINED(typeID, rettype, obj, sel, ...)
#define CF_OBJC_CALLV(rettype, var, obj, sel, ...)
#define CF_OBJC_VOIDCALLV(obj, sel, ...)
#endif /* HAVE_OBJC_RUNTIME_H */
#endif /* __GSOBJCRUNTIME_H__ */
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