Differences From Artifact [3f90a22e50]:
- File
src/runtime/class.m
— part of check-in
[7c0fa1fa85]
at
2014-01-13 13:28:19
on branch trunk
— Remove class_isKindOfClass().
This was never used and is not part of the Apple runtime either. (user: js, size: 17709) [annotate] [blame] [check-ins using]
To Artifact [dff5c1b4fe]:
- File
src/runtime/class.m
— part of check-in
[52c0e9f94e]
at
2014-02-13 16:29:25
on branch trunk
— runtime/class.m: Better handling of Nil parameters
This matches the behaviour of the Apple runtime. (user: js, size: 18038) [annotate] [blame] [check-ins using]
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return ret;
}
bool
class_isMetaClass(Class cls)
{
return (cls->info & OBJC_CLASS_INFO_METACLASS);
}
const char*
class_getName(Class cls)
{
return cls->name;
}
Class
class_getSuperclass(Class cls)
{
return cls->superclass;
}
unsigned long
class_getInstanceSize(Class cls)
{
return cls->instance_size;
}
IMP
class_getMethodImplementation(Class cls, SEL sel)
{
/*
* We use a dummy object here so that the normal lookup is used, even
* though we don't have an object. Doing so is safe, as objc_msg_lookup
* does not access the object, but only its class.
*
* Just looking it up in the dispatch table could result in returning
* NULL instead of the forwarding handler, it would also mean
* +[resolveClassMethod:] / +[resolveInstanceMethod:] would not be
* called.
*/
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return ret;
}
bool
class_isMetaClass(Class cls)
{
if (cls == Nil)
return false;
return (cls->info & OBJC_CLASS_INFO_METACLASS);
}
const char*
class_getName(Class cls)
{
if (cls == Nil)
return "";
return cls->name;
}
Class
class_getSuperclass(Class cls)
{
if (cls == Nil)
return nil;
return cls->superclass;
}
unsigned long
class_getInstanceSize(Class cls)
{
if (cls == Nil)
return 0;
return cls->instance_size;
}
IMP
class_getMethodImplementation(Class cls, SEL sel)
{
/*
* We use a dummy object here so that the normal lookup is used, even
* though we don't have an object. Doing so is safe, as objc_msg_lookup
* does not access the object, but only its class.
*
* Just looking it up in the dispatch table could result in returning
* NULL instead of the forwarding handler, it would also mean
* +[resolveClassMethod:] / +[resolveInstanceMethod:] would not be
* called.
*/
struct {
Class isa;
} dummy;
if (cls == Nil)
return NULL;
dummy.isa = cls;
return objc_msg_lookup((id)&dummy, sel);
}
IMP
class_getMethodImplementation_stret(Class cls, SEL sel)
{
/*
* Same as above, but use objc_msg_lookup_stret instead, so that the
* correct forwarding handler is returned.
*/
struct {
Class isa;
} dummy;
if (cls == Nil)
return NULL;
dummy.isa = cls;
return objc_msg_lookup_stret((id)&dummy, sel);
}
const char*
class_getMethodTypeEncoding(Class cls, SEL sel)
{
struct objc_method_list *ml;
struct objc_category **cats;
unsigned int i;
if (cls == Nil)
return NULL;
objc_global_mutex_lock();
for (ml = cls->methodlist; ml != NULL; ml = ml->next) {
for (i = 0; i < ml->count; i++) {
if (sel_isEqual((SEL)&ml->methods[i].sel, sel)) {
const char *ret = ml->methods[i].sel.types;
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return NULL;
}
Class
object_getClass(id obj_)
{
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return NULL;
}
Class
object_getClass(id obj_)
{
struct objc_object *obj;
if (obj_ == nil)
return Nil;
obj = (struct objc_object*)obj_;
return obj->isa;
}
Class
object_setClass(id obj_, Class cls)
{
struct objc_object *obj;
Class old;
if (obj_ == nil)
return Nil;
obj = (struct objc_object*)obj_;
old = obj->isa;
obj->isa = cls;
return old;
}
const char*
object_getClassName(id obj)
{
return class_getName(object_getClass(obj));
}
static void
unregister_class(Class rcls)
{
struct objc_abi_class *cls = (struct objc_abi_class*)rcls;
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