[antlr-interest] Simple grammar problem
CARLOS MELGAREJO
carlos.melgarejo at rogers.com
Thu May 24 12:24:41 PDT 2007
Hi All,
I'm facing a problem with my grammar. Maybe I'm missing something somewhere, because the generated
code is not doing things the way I want to.
I realize after a few testing that the following input reconize and display error messages:
( 3 + 6 => ')' especting. That is fine, that is the way should be anyway.
But when I enter the following input:
(3 + 6 ) ( I don't see any error message. Seens to me that '(' is consumed but do not generate any
exception, and even create the right AST.
The same happends with:
(3+6) ( )
So, the question is: How I can fix the problem, in order to display and error message in situations mentioned
abode.
Thanks in advance.
This is my grammar
-----------------------------------------
statement
: expression
;
expression
: conditionalAndExpression ( 'or'^ conditionalAndExpression )*
;
--------------
atom
: literal
| log
| Date
| '('! expression ')'!
;
------------
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