Recursive NSView navigator

recursiveTroughtSubviews.m

static inline NSSet *recursiveTroughtSubviews(NSView *aView, NSSet *previousResults) {
    
    NSMutableSet *tmpSet = [NSMutableSet set];
    
    //There are objects
    if (aView && [aView subviews] > 0) {
        
        //Enumerate array
        NSArray *viewsToNavigate = [aView subviews];
        
        for (NSView *obj in viewsToNavigate) {
            
            //Add selected objects
            [tmpSet addObject:obj];
            
            if (previousResults)
                [tmpSet addObjectsFromArray:[previousResults allObjects]];
            
            //Reiterate the function
            [tmpSet addObjectsFromArray:[recursiveTroughtSubviews(obj, [tmpSet retain]) allObjects]];
        }
        
        //Returns a set
        return [[NSSet alloc] initWithSet:tmpSet];
    }
    
    //View has no subviews
    else
        return nil;
}