ObjFW  Diff

#import "OFObject.h"
#import "OFAutoreleasePool.h"
#import "OFExceptions.h"
#import "OFMacros.h"

#import <objc/objc-api.h>
#ifdef __objc_INCLUDE_GNU
#import <objc/sarray.h>
#else
#import <objc/runtime.h>
#ifdef OF_APPLE_RUNTIME
#import <objc/runtime.h>
#endif
#ifdef OF_GNU_RUNTIME
#import <objc/sarray.h>
#endif

struct pre_ivar {
	void   **memchunks;
	size_t memchunks_size;
	size_t retain_count;
};

+ (void)initialize
{
}

+ alloc
{
	OFObject *instance;
#ifdef __objc_INCLUDE_GNU
	size_t isize = class_get_instance_size(self);
#ifdef OF_APPLE_RUNTIME
	size_t isize = class_getInstanceSize(self);
#else
	size_t isize = class_getInstanceSize(self);
	size_t isize = class_get_instance_size(self);
#endif

	if ((instance = malloc(isize + PRE_IVAR_ALIGN)) == NULL) {
		alloc_failed_exception.isa = [OFAllocFailedException class];
		@throw (OFAllocFailedException*)&alloc_failed_exception;
	}

+ (Class)class
{
	return self;
}

+ (const char*)className
{
#ifdef __objc_INCLUDE_GNU
	return class_get_class_name(self);
#ifdef OF_APPLE_RUNTIME
	return class_getName(self);
#else
	return class_getName(self);
	return class_get_class_name(self);
#endif
}

+ (BOOL)instancesRespondToSelector: (SEL)selector
{
#ifdef __objc_INCLUDE_GNU
	return class_get_instance_method(self, selector) != METHOD_NULL;
#ifdef OF_APPLE_RUNTIME
	return class_respondsToSelector(self, selector);
#else
	return class_respondsToSelector(self, selector);
	return class_get_instance_method(self, selector) != METHOD_NULL;
#endif
}

+ (BOOL)conformsToProtocol: (Protocol*)protocol
{
#ifdef OF_APPLE_RUNTIME
	Class c;
#ifdef __objc_INCLUDE_GNU

	for (c = self; c != Nil; c = class_getSuperclass(c))
		if (class_conformsToProtocol(c, protocol))
			return YES;

	return NO;
#else
	Class c;
	struct objc_protocol_list *pl;
	size_t i;

	for (c = self; c != Nil; c = class_get_super_class(c))
		for (pl = c->protocols; pl != NULL; pl = pl->next)
			for (i = 0; i < pl->count; i++)
				if ([pl->list[i] conformsToProtocol: protocol])
					return YES;

	return NO;
#else
	Class c;

	for (c = self; c != Nil; c = class_getSuperclass(c))
		if (class_conformsToProtocol(c, protocol))
			return YES;

	return NO;
#endif
}

+ (IMP)instanceMethodForSelector: (SEL)selector
{
#ifdef __objc_INCLUDE_GNU
	return method_get_imp(class_get_instance_method(self, selector));
#ifdef OF_APPLE_RUNTIME
	return class_getMethodImplementation(self, selector);
#else
	return class_getMethodImplementation(self, selector);
	return method_get_imp(class_get_instance_method(self, selector));
#endif
}

+ (IMP)setImplementation: (IMP)newimp
	       forMethod: (SEL)selector
{
#ifdef OF_APPLE_RUNTIME
	Method method;
#ifdef __objc_INCLUDE_GNU

	if ((method = class_getInstanceMethod(self, selector)) == NULL)
		@throw [OFInvalidArgumentException newWithClass: self
						       selector: _cmd];

	return method_setImplementation(method, newimp);
#else
	Method_t method = class_get_instance_method(self, selector);
	IMP oldimp;

	if (method == NULL)
		@throw [OFInvalidArgumentException newWithClass: self
						       selector: _cmd];

	if ((oldimp = method_get_imp(method)) == (IMP)0 || newimp == (IMP)0)
		@throw [OFInvalidArgumentException newWithClass: self
						       selector: _cmd];

	method->method_imp = newimp;

	/* Update the dtable if necessary */
	if (sarray_get_safe(((Class)self)->dtable,
	    (sidx)method->method_name->sel_id))
		sarray_at_put_safe(((Class)self)->dtable,
		    (sidx)method->method_name->sel_id, method->method_imp);

	return oldimp;
#else
	Method method;

	if ((method = class_getInstanceMethod(self, selector)) == NULL)
		@throw [OFInvalidArgumentException newWithClass: self
						       selector: _cmd];

	return method_setImplementation(method, newimp);
#endif
}

+  (IMP)replaceMethod: (SEL)selector
  withMethodFromClass: (Class)class;
{
	IMP newimp;

#ifdef __objc_INCLUDE_GNU
	newimp = method_get_imp(class_get_instance_method(class, selector));
#ifdef OF_APPLE_RUNTIME
	newimp = class_getMethodImplementation(class, selector);
#else
	newimp = class_getMethodImplementation(class, selector);
	newimp = method_get_imp(class_get_instance_method(class, selector));
#endif

	return [self setImplementation: newimp
			     forMethod: selector];
}

- init
{
	return self;
}

- (Class)class
{
	return isa;
}

- (const char*)className
{
#ifdef __objc_INCLUDE_GNU
	return object_get_class_name(self);
#ifdef OF_APPLE_RUNTIME
	return class_getName(isa);
#else
	return class_getName(isa);
	return object_get_class_name(self);
#endif
}

- (BOOL)isKindOfClass: (Class)class
{
	Class iter;

#ifdef __objc_INCLUDE_GNU
	for (iter = isa; iter != Nil; iter = class_get_super_class(iter))
#ifdef OF_APPLE_RUNTIME
	for (iter = isa; iter != Nil; iter = class_getSuperclass(iter))
#else
	for (iter = isa; iter != Nil; iter = class_getSuperclass(iter))
	for (iter = isa; iter != Nil; iter = class_get_super_class(iter))
#endif
		if (iter == class)
			return YES;

	return NO;
}

- (BOOL)respondsToSelector: (SEL)selector
{
#ifdef __objc_INCLUDE_GNU
#ifdef OF_APPLE_RUNTIME
	return class_respondsToSelector(isa, selector);
#else
	if (object_is_instance(self))
		return class_get_instance_method(isa, selector) != METHOD_NULL;
	else
		return class_get_class_method(isa, selector) != METHOD_NULL;
#else
	return class_respondsToSelector(isa, selector);
#endif
}

- (BOOL)conformsToProtocol: (Protocol*)protocol
{
	return [isa conformsToProtocol: protocol];
}

- (IMP)methodForSelector: (SEL)selector
{
#ifdef __objc_INCLUDE_GNU
#ifdef OF_APPLE_RUNTIME
	return class_getMethodImplementation(isa, selector);
#else
	if (object_is_instance(self))
		return method_get_imp(class_get_instance_method(isa, selector));
	else
		return method_get_imp(class_get_class_method(isa, selector));
#else
	return class_getMethodImplementation(isa, selector);
#endif
}

- (BOOL)isEqual: (id)obj
{
	/* Classes containing data should reimplement this! */
	return (self == obj ? YES : NO);