[antlr-interest] [AST grammar] input null pointer exception
maulattu
maulattu at yahoo.it
Wed Sep 17 07:23:53 PDT 2008
Doh!
Now it's ok and it works fine.
On chapter 3 of the book there isn't that function call as I can see, I found it also on http://www.antlr.org/wiki/display/ANTLR3/Tree+construction
Thank you Gavin
----- Messaggio originale -----
Da: Gavin Lambert <antlr at mirality.co.nz>
A: maulattu <maulattu at yahoo.it>; antlr-interest at antlr.org
Inviato: Mercoledì 17 settembre 2008, 8:15:40
Oggetto: Re: [antlr-interest] [AST grammar] input null pointer exception
At 02:00 17/09/2008, maulattu wrote:
>In particular, input.getTokenStream() returns null and I can't
>understand why (it is in the "expr()" function)
Did you call setTokenStream in your driver code to pass the token
stream over to the node stream? It doesn't inherit it
automatically...
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