In libobjc/: 2010-10-12 Nicola Pero <nicola.pero@meta-innovation.com>

In libobjc/:
2010-10-12  Nicola Pero  <nicola.pero@meta-innovation.com>

        * class.c: Include objc/runtime.h and objc-private/module-abi-8.h
        instead of objc/objc-api.h.
        (objc_get_unknown_class_handler): Do not define.
        (class_isMetaClass): New.
        (class_getSuperclass): New.
        (class_getVersion): New.
        (class_setVersion): New.
        (class_getInstanceSize): New.
        * exceptions.c: Include objc/runtime.h instead of objc/objc-api.h.
        (is_kind_of_exception_matcher): Use objc_getSuperclass instead of
        objc_get_super_class.
        (get_ttype_entry): Use objc_getRequiredClass instead of
        objc_get_class.
        * ivars.c (class_getClassVariable): New.
        * objects.c: Include objc/runtime.h, objc/thr.h and
        objc-private/module-abi-8.h instead of objc/objc-api.h
        * objc/runtime.h (class_getClassVariable): New.
        (class_isMetaClass): New.
        (class_getSuperclass): New.
        (class_getVersion): New.
        (class_setVersion): New.
        (class_getInstanceSize): New.
        * objc-private/module-abi-8.h (HOST_BITS_PER_LONG): New (from
        objc/objc-api.h)
        (__CLS_INFO): Same.
        (__CLS_ISINFO): Same.
        (__CLS_SETINFO): Same.
        (CLS_ISMETA): Same.
        (CLS_ISCLASS): Same.
        (CLS_ISRESOLV): Same.
        (CLS_SETRESOLV): Same.
        (CLS_ISINITIALIZED): Same.
        (CLS_SETINITIALIZED): Same.
        (CLS_GETNUMBER): Same.
        (CLS_SETNUMBER): Same.

From-SVN: r165392

1 files changed, 40 insertions, 1 deletions

diff --git a/libobjc/objc-private/module-abi-8.h b/libobjc/objc-private/module-abi-8.h
index 120f513..414e5e3 100644
--- a/libobjc/objc-private/module-abi-8.h
+++ b/libobjc/objc-private/module-abi-8.h
@@ -183,7 +183,7 @@ struct objc_class {
   const char*         name;             /* Name of the class. */
   long                version;          /* Unknown. */
   unsigned long       info;             /* Bit mask.  See class masks
-					   defined above. */
+					   defined below. */
   long                instance_size;    /* Size in bytes of the class.
 					   The sum of the class
 					   definition and all super
@@ -218,6 +218,45 @@ struct objc_class {
 };
 #endif /* __objc_STRUCT_OBJC_CLASS_defined */
 
+/* This is used to assure consistent access to the info field of 
+   classes.  */
+#ifndef HOST_BITS_PER_LONG
+# define HOST_BITS_PER_LONG  (sizeof(long)*8)
+#endif 
+
+#define __CLS_INFO(cls) ((cls)->info)
+#define __CLS_ISINFO(cls, mask) ((__CLS_INFO(cls)&mask)==mask)
+#define __CLS_SETINFO(cls, mask) (__CLS_INFO(cls) |= mask)
+
+/* The structure is of type MetaClass */
+#define _CLS_META 0x2L
+#define CLS_ISMETA(cls) ((cls)&&__CLS_ISINFO(cls, _CLS_META))
+
+/* The structure is of type Class */
+#define _CLS_CLASS 0x1L
+#define CLS_ISCLASS(cls) ((cls)&&__CLS_ISINFO(cls, _CLS_CLASS))
+
+/* The class is initialized within the runtime.  This means that it
+   has had correct super and sublinks assigned.  */
+#define _CLS_RESOLV 0x8L
+#define CLS_ISRESOLV(cls) __CLS_ISINFO(cls, _CLS_RESOLV)
+#define CLS_SETRESOLV(cls) __CLS_SETINFO(cls, _CLS_RESOLV)
+
+/* The class has been send a +initialize message or a such is not 
+   defined for this class.  */
+#define _CLS_INITIALIZED 0x04L
+#define CLS_ISINITIALIZED(cls) __CLS_ISINFO(cls, _CLS_INITIALIZED)
+#define CLS_SETINITIALIZED(cls) __CLS_SETINFO(cls, _CLS_INITIALIZED)
+
+/* The class number of this class.  This must be the same for both the
+   class and its meta class object.  */
+#define CLS_GETNUMBER(cls) (__CLS_INFO(cls) >> (HOST_BITS_PER_LONG/2))
+#define CLS_SETNUMBER(cls, num) \
+  ({ (cls)->info <<= (HOST_BITS_PER_LONG/2); \
+     (cls)->info >>= (HOST_BITS_PER_LONG/2); \
+     __CLS_SETINFO(cls, (((unsigned long)num) << (HOST_BITS_PER_LONG/2))); })
+
+
 /* The compiler generates one of these structures for each category.
    A class may have many categories and contain both instance and
    factory methods.  */