On Thu, Feb 10, 2011 at 6:08 PM, Roohul <roohu...@yahoo.com> wrote:
> Hi,
>
> I am working on a grammar which have some variables ending with In or Out
> which is treated as the connector between two components. I do not know how
> to handle this.
>
> For example:
> real abcIn
> real abcOut
>
> these are treated as connectors. while abcI or abcOu will be treated as
> normal variables.
>
You could handle this on a "lexer level" like this:
REAL
: 'real'
;
CONNECTOR
: Alpha+ ('In' | 'Out')
;
VARIABLE
: Alpha+
;
fragment
Alpha
: 'a'..'z'
| 'A'..'Z'
;
(the order of the rules is important here!)
Regards,
Bart.
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