ObjFW  Diff

Annotate Patch Unified Diff

Differences From Artifact [dc384327e0]:

To Artifact [5c7645fb2a]:

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	Class isa;
}

+ (bool)resolveClassMethod: (SEL)selector;
+ (bool)resolveInstanceMethod: (SEL)selector;
@end

static IMP forward_handler = (IMP)0;
static IMP forward_handler_stret = (IMP)0;

static IMP
common_method_not_found(id obj, SEL sel, IMP (*lookup)(id, SEL), IMP forward)

{
	/*
	 * obj might be a dummy object (see class_getMethodImplementation), so
	 * don't access obj directly unless it's a class!
	 */


	bool is_class = object_getClass(obj)->info & OBJC_CLASS_INFO_METACLASS;

	if (!(object_getClass(obj)->info & OBJC_CLASS_INFO_INITIALIZED)) {
		Class cls = (is_class ? (Class)obj : object_getClass(obj));


		objc_initialize_class(cls);

		if (!(cls->info & OBJC_CLASS_INFO_SETUP))
			OBJC_ERROR("Could not dispatch message for incomplete "
			    "class %s!", cls->name);

		/*
		 * We don't need to handle the case that super was called.
		 * The reason for this is that a call to super is not possible
		 * before a message to the class has been sent and it thus has
		 * been initialized together with its superclasses.
		 */
		return lookup(obj, sel);
	}

	/* Try resolveClassMethod: / resolveInstanceMethod: */
	if (class_isMetaClass(object_getClass(obj))) {
		Class cls = object_getClass(obj);

		if (class_respondsToSelector(cls,
		    @selector(resolveClassMethod:)) &&
		    [obj resolveClassMethod: sel]) {
			if (!class_respondsToSelector(cls, sel))
				OBJC_ERROR("[%s resolveClassMethod: %s] "
				    "returned true without adding the method!",
				    class_getName(obj), sel_getName(sel));


			return lookup(obj, sel);
		}
	} else {
		Class cls = object_getClass(obj);
		Class metacls = object_getClass(cls);

		if (class_respondsToSelector(metacls,
		    @selector(resolveInstanceMethod:)) &&
		    [cls resolveInstanceMethod: sel]) {
			if (!class_respondsToSelector(cls, sel))
				OBJC_ERROR("[%s resolveInstanceMethod: %s] "
				    "returned true without adding the method!",
				    class_getName(object_getClass(obj)),
				    sel_getName(sel));

			return lookup(obj, sel);
		}
	}

	if (forward != (IMP)0)
		return forward;

	OBJC_ERROR("Selector %c[%s] is not implemented for class %s!",
	    (is_class ? '+' : '-'), sel_getName(sel), object_getClassName(obj));

}

IMP
objc_method_not_found(id obj, SEL sel)
{
	return common_method_not_found(obj, sel, objc_msg_lookup,
	    forward_handler);
}

IMP
objc_method_not_found_stret(id obj, SEL sel)
{
	return common_method_not_found(obj, sel, objc_msg_lookup_stret,
	    forward_handler_stret);
}

void
objc_setForwardHandler(IMP forward, IMP forward_stret)
{
	forward_handler = forward;
	forward_handler_stret = forward_stret;
}

bool
class_respondsToSelector(Class cls, SEL sel)
{
	if (cls == Nil)
		return false;

	return (objc_dtable_get(cls->dtable, (uint32_t)sel->uid) != (IMP)0);

}

#ifndef OF_ASM_LOOKUP
static id
nil_method(id self, SEL _cmd)
{
	return nil;
}

static OF_INLINE IMP
common_lookup(id obj, SEL sel, IMP (*not_found)(id, SEL))
{
	IMP imp;

	if (obj == nil)
		return (IMP)nil_method;

	imp = objc_dtable_get(object_getClass(obj)->dtable, (uint32_t)sel->uid);


	if (imp == (IMP)0)
		return not_found(obj, sel);

	return imp;
}

IMP
objc_msg_lookup(id obj, SEL sel)
{
	return common_lookup(obj, sel, objc_method_not_found);
}

IMP
objc_msg_lookup_stret(id obj, SEL sel)
{
	return common_lookup(obj, sel, objc_method_not_found_stret);
}

static OF_INLINE IMP
common_lookup_super(struct objc_super *super, SEL sel,
    IMP (*not_found)(id, SEL))
{
	IMP imp;

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

	imp = objc_dtable_get(super->cls->dtable, (uint32_t)sel->uid);

	if (imp == (IMP)0)
		return not_found(super->self, sel);

	return imp;
}

IMP
objc_msg_lookup_super(struct objc_super *super, SEL sel)
{
	return common_lookup_super(super, sel, objc_method_not_found);
}

IMP
objc_msg_lookup_super_stret(struct objc_super *super, SEL sel)
{
	return common_lookup_super(super, sel, objc_method_not_found_stret);
}
#endif








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	Class isa;
}

+ (bool)resolveClassMethod: (SEL)selector;
+ (bool)resolveInstanceMethod: (SEL)selector;
@end

static IMP forwardHandler = (IMP)0;
static IMP stretForwardHandler = (IMP)0;

static IMP
commonMethodNotFound(id object, SEL selector, IMP (*lookup)(id, SEL),
    IMP forward)
{
	/*
	 * object might be a dummy object (see class_getMethodImplementation),
	 * so don't access object directly unless it's a class!
	 */

	bool isClass =
	    object_getClass(object)->info & OBJC_CLASS_INFO_METACLASS;

	if (!(object_getClass(object)->info & OBJC_CLASS_INFO_INITIALIZED)) {
		Class cls = (isClass
		    ? (Class)object : object_getClass(object));

		objc_initialize_class(cls);

		if (!(cls->info & OBJC_CLASS_INFO_SETUP))
			OBJC_ERROR("Could not dispatch message for incomplete "
			    "class %s!", cls->name);

		/*
		 * We don't need to handle the case that super was called.
		 * The reason for this is that a call to super is not possible
		 * before a message to the class has been sent and it thus has
		 * been initialized together with its superclasses.
		 */
		return lookup(object, selector);
	}

	/* Try resolveClassMethod: / resolveInstanceMethod: */
	if (class_isMetaClass(object_getClass(object))) {
		Class cls = object_getClass(object);

		if (class_respondsToSelector(cls,
		    @selector(resolveClassMethod:)) &&
		    [object resolveClassMethod: selector]) {
			if (!class_respondsToSelector(cls, selector))
				OBJC_ERROR("[%s resolveClassMethod: %s] "
				    "returned true without adding the method!",
				    class_getName(object),
				    sel_getName(selector));

			return lookup(object, selector);
		}
	} else {
		Class cls = object_getClass(object);
		Class metaclass = object_getClass(cls);

		if (class_respondsToSelector(metaclass,
		    @selector(resolveInstanceMethod:)) &&
		    [cls resolveInstanceMethod: selector]) {
			if (!class_respondsToSelector(cls, selector))
				OBJC_ERROR("[%s resolveInstanceMethod: %s] "
				    "returned true without adding the method!",
				    class_getName(object_getClass(object)),
				    sel_getName(selector));

			return lookup(object, selector);
		}
	}

	if (forward != (IMP)0)
		return forward;

	OBJC_ERROR("Selector %c[%s] is not implemented for class %s!",
	    (isClass ? '+' : '-'), sel_getName(selector),
	    object_getClassName(object));
}

IMP
objc_method_not_found(id object, SEL selector)
{
	return commonMethodNotFound(object, selector, objc_msg_lookup,
	    forwardHandler);
}

IMP
objc_method_not_found_stret(id object, SEL selector)
{
	return commonMethodNotFound(object, selector, objc_msg_lookup_stret,
	    stretForwardHandler);
}

void
objc_setForwardHandler(IMP forward, IMP stretForward)
{
	forwardHandler = forward;
	stretForwardHandler = stretForward;
}

bool
class_respondsToSelector(Class cls, SEL selector)
{
	if (cls == Nil)
		return false;

	return (objc_dtable_get(cls->DTable,
	    (uint32_t)selector->UID) != (IMP)0);
}

#ifndef OF_ASM_LOOKUP
static id
nilMethod(id self, SEL _cmd)
{
	return nil;
}

static OF_INLINE IMP
commonLookup(id object, SEL selector, IMP (*notFound)(id, SEL))
{
	IMP imp;

	if (object == nil)
		return (IMP)nilMethod;

	imp = objc_dtable_get(object_getClass(object)->DTable,
	    (uint32_t)selector->UID);

	if (imp == (IMP)0)
		return notFound(object, selector);

	return imp;
}

IMP
objc_msg_lookup(id object, SEL selector)
{
	return commonLookup(object, selector, objc_method_not_found);
}

IMP
objc_msg_lookup_stret(id object, SEL selector)
{
	return commonLookup(object, selector, objc_method_not_found_stret);
}

static OF_INLINE IMP
commonSuperLookup(struct objc_super *super, SEL selector,
    IMP (*notFound)(id, SEL))
{
	IMP imp;

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

	imp = objc_dtable_get(super->cls->DTable, (uint32_t)selector->UID);

	if (imp == (IMP)0)
		return notFound(super->self, selector);

	return imp;
}

IMP
objc_msg_lookup_super(struct objc_super *super, SEL selector)
{
	return commonSuperLookup(super, selector, objc_method_not_found);
}

IMP
objc_msg_lookup_super_stret(struct objc_super *super, SEL selector)
{
	return commonSuperLookup(super, selector, objc_method_not_found_stret);
}
#endif
Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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