[antlr-interest] parser not throwing exception

[Martin Probst]

Like this:

MyParser extends Parser;
options {
   defaultErrorHandler = false;
}

HTH,
Martin

Am 13.08.2006 um 11:25 schrieb Dilip Easwaran:

> Hi All:
>
>        I am using antlr version 2.7.5.
>        I have for my requirements a calculation utility as part of  
> which  i have defined a function "len": Basically, returns the  
> length of an alphanumeric input
>
>        len returns [ String result = "" ] throws Exception  :
>        LENKEYWORD
>        (
>           LPAREN
>           (
>                 result = statement
>           )
>           RPAREN
>          (
>              { result = ""+result.length(); }
>          )
>      );
>
>
>      for Iput : len("Hello!"
>
>      the result is :   line 1:10: expecting RPAREN, found 'null' .
>
>      But it is logging this error to the stderr and not throwing  
> it. I cant override reportError method in LLkParser to throw an  
> exception.
>      how do i go about doing this?
>
> Regards,
>
> Dilip
>
>
>
>
>