crappy loop to get the last word of each line in a UITextView

gistfile1.m

- (NSArray *)lastWordOfEachLine
{
    NSMutableArray *wordArray = [@[] mutableCopy];
    UITextPosition *firstRowStart = self.myTextView.beginningOfDocument;
    UITextPosition *rowEnd = [self.myTextView.tokenizer positionFromPosition:firstRowStart
                                                                  toBoundary:UITextGranularityLine
                                                                 inDirection:UITextLayoutDirectionRight];

    BOOL done = NO;

    while (!done) {
        UITextRange *range = [self.myTextView.tokenizer rangeEnclosingPosition:rowEnd
                                                               withGranularity:UITextGranularityWord
                                                                   inDirection:UITextLayoutDirectionLeft];
        NSString *lastWord = [self.myTextView textInRange:range];

        int i = -1;
        UITextPosition *newRowEnd = [self.myTextView positionFromPosition:rowEnd offset:i];
        while (!lastWord) {
            range = [self.myTextView.tokenizer rangeEnclosingPosition:newRowEnd
                                                      withGranularity:UITextGranularityWord
                                                          inDirection:UITextLayoutDirectionLeft];
            i--;
            lastWord = [self.myTextView textInRange:range];
            newRowEnd = [self.myTextView positionFromPosition:rowEnd offset:i];
        }
        [wordArray addObject:lastWord];

        done = [rowEnd isEqual:self.myTextView.endOfDocument];

        rowEnd = [self.myTextView.tokenizer positionFromPosition:rowEnd
                                                      toBoundary:UITextGranularityLine
                                                     inDirection:UITextLayoutDirectionRight];
    }

    return [NSArray arrayWithArray:wordArray];
}