[antlr-interest] How catch exception when "extraneous input" happens?

[Ron Hunter-Duvar]

BiGNoRm6969 wrote:
> During a string validation, I receive this message "line 1:20 extraneous
> input 'f' expecting ASA" in the console. This is printed by the
> "getErrorMessage" function, initiated by the "match" function. I understanrd
> why this message is displayed. 
>
> My problem is that I want to catch the error generated by the parser. I
> include this code in my .g:
>
> @rulecatch {
>        catch ( RecognitionException testing ) {
>            throw testing;
>        }
>   }
>
> I also include a try/catch block in my Java code that use my parser, to
> catch the RecognitionException exception. However, it never catch it. So, my
> program is unable to know if the validation succeed or not.
>
> What I am  missing?
>
>
>   
Try overriding either the emitErrorMessage or the 
displayRecognitionError method in org.antlr.runtime.BaseRecognizer. You 
can do that with an @member section in your grammar, or in a separate 
superclass.

Ron

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Ron Hunter-Duvar | Software Developer V | 403-272-6580
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