[antlr-interest] predicate and ambiguity

[Lloyd Dupont]

First thanks for your answr and tips! :-)

> Alternatively, you could turn on backtracking for parserrule and let 
> ANTLR try the alternatives at runtime.
>
hmmm how does backtracking work?
I have seen the flag in the documentation, but I have no idea on how to 
exploit it!


In the list of predefefined attribute I saw some interesting things..

is there a possibility to do something "like":

parserrule:
   ({ Function($rule.Tree) }?  TOK1 otherparserrule TOK2)? TOK1 
otherparserrule TOK2
   | alternative

where I analyse the result of a few rules before accepting them.



On an other note I heard there is a PDF and a book.
Is it possible to pay online and get the PDF directly?
I have no good computing library around my place, but I like to peruse the 
book.


Also, it's funny, on your blog, with IE the text and foreground is black on 
black ?!? (while it's black and white with Firefox)