I have a parser that is doing pretty much what I want. However, I want to do
the following.
I have a definition for an IDENTIFIER
IDENTIFIER: LETTER (LETTER | NUMBER) // LETTER and NUMBER mean
the usual thing
Now in some of my rules, I'm looking for an IDENTIFIER and in one of my rules I
look for a NAME. NAME has exactly the same definition as IDENTIFIER (starts
with a letter followed by alphanumerics). However, you can tell by the token
after whether it was a NAME or an IDENTIFIER. To be more explicit, a NAME is
ALWAYS followed by a colon. An IDENTIFIER can be followed by a number of
things, but NEVER by a colon.
So, I have rules that looksomething like:
rule1:
NAME ':' expression
;
rule2:
IDENTIFIER '+' expression
| IDENTIFIER '-' expression
;
I don't seem to be able to make this work. Can someone suggest a solution? Do
I have to turn on backtracking to make this work?
Thanks
Scott
List: http://www.antlr.org/mailman/listinfo/antlr-interest
Unsubscribe:
http://www.antlr.org/mailman/options/antlr-interest/your-email-address
--
You received this message because you are subscribed to the Google Groups
"il-antlr-interest" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/il-antlr-interest?hl=en.
