[antlr-interest] Problem with position of parenthesis term

[Johannes Luber]

Friedhelm wrote:
> Maybe it is my misunderstanding, but I have problems regarding
> parenthese is my logic (please see my grammar below)
> 
> I have added rules for handling AND and OR and for expressions in
> parenthesis.
> But now, depending on the positition of the parenthesis term, the lexer
> does not evaluate correctly.
> 
> working:            AGE>0 AND (AGE<10 OR WEIGHT<500)
> NOT working    (AGE<10 OR WEIGHT<500) AND AGE>0
> 
> 
> What is my mistake? Does anyone have an example with similar logic?
> 
> Thanks for any answer,
>  Fridi

Try adding

start: expression EOF;

Johannes