ObjFW  Diff

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#include <stdio.h>
#include <stdlib.h>

#import "runtime.h"
#import "runtime-private.h"
#import "macros.h"

static IMP not_found_handler(id, SEL);
IMP (*objc_forward_handler)(id, SEL) = not_found_handler;
IMP (*objc_forward_handler)(id, SEL) = NULL;

static IMP
not_found_handler(id obj, SEL sel)
IMP
objc_not_found_handler(id obj, SEL sel)
{
	if (objc_forward_handler != NULL)
		return objc_forward_handler(obj, sel);

	ERROR("Selector %s is not implemented for class %s!",
	    sel_getName(sel), obj->isa->name);
}

BOOL
class_respondsToSelector(Class cls, SEL sel)
{
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	if (obj == nil)
		return (IMP)nil_method;

	imp = objc_sparsearray_get(obj->isa->dtable, (uint32_t)sel->uid);

	if (imp == NULL)
		return objc_forward_handler(obj, sel);
		return objc_not_found_handler(obj, sel);

	return imp;
}

IMP
objc_msg_lookup_super(struct objc_super *super, SEL sel)
{
	IMP imp;

	if (super->self == nil)
		return (IMP)nil_method;

	imp = objc_sparsearray_get(super->class->dtable, (uint32_t)sel->uid);

	if (imp == NULL)
		return objc_forward_handler(super->self, sel);
		return objc_not_found_handler(super->self, sel);

	return imp;
}
#endif