ObjFW  Check-in [c52a5e5faf]

	/// Arbitrary state information for the enumeration
	unsigned long state;
	/// Pointer to a C array of objects to return
	id *itemsPtr;
	/// Arbitrary state information to detect mutations
	unsigned long *mutationsPtr;
	/// Additional arbitrary state information
	union {
		unsigned long longs[5];
		void *pointers[2];
	} extra;
} of_fast_enumeration_state_t;
#endif

/**
 * \brief A protocol for fast enumeration.
 *
 * The OFFastEnumeration protocol needs to be implemented by all classes

	return element;
}

- (int)countByEnumeratingWithState: (of_fast_enumeration_state_t*)state
			   objects: (id*)objects
			     count: (int)count_
{
	of_list_object_t *listObject = state->extra.pointers[0];
	int i;

	state->itemsPtr = objects;
	state->mutationsPtr = &mutations;

	if (state->state == 0) {
		listObject = firstListObject;
		state->state = 1;
	}

	for (i = 0; i < count_; i++) {
		if (listObject == NULL) {
			state->extra.pointers[0] = NULL;
			return i;
		}

		objects[i] = listObject->object;
		listObject = listObject->next;
	}

	state->extra.pointers[0] = listObject;

	return count_;
}

- (OFEnumerator*)objectEnumerator
{
	return [[[OFListEnumerator alloc]
		initWithList: self
	    mutationsPointer: &mutations] autorelease];