Hi and Hello to everyone,
I would really appreciate any hints and advices if someone can give my relating
to my problem. I would like to know how to deal with the situation where you
would use same character for multiple rules/operations. For example in Visual
Basic you use '=' for both variable assignment (a=10) and for comparison
(if(a=10 then ....).
Clearly, using assignment rule:assignment:
ID '=' expression;
and later relation rule:
relation:
atom ('=' atom)*;
gives out error like rule relation has non-LL(*) decision due to recursive
rule invocations reachable from alts 1,6. Resolve by left-factoring or using
syntactic predicates or using backtrack=true option.
And, yes, it is clear that antlr can not decide when to use assignment and when
comparison, makes sense. But, my question is, how to deal with this? I'm not
interested in using different characters for rules(e.x. '==' etc.). Is this
where I have to look into the backtracking? Or is there some other way, that
I'm not aware of?
Help would be most appreciated,
Lee
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