Re: Shift/reduce conflict in Yacc C grammar

Can't you use the precedence trick?


You know (if I recall properly)


%nonassoc ELSE
%nonassoc LOWER_THEN_ELSE


...


ifStatement
    : IF expr THEN statement %prec LOWER_THAN_ELSE
    | IF expr THEN statement ELSE statement
    ;


Or does it still give a problem?


(Or have I been away from yacc that long???)


-- Scott


Scott Stanchfield - http://www.scruz.net/~thetick
MageLang Institute - http://www.MageLang.com


HAJNAL Akos wrote...
>I downloaded the ANSI C grammar from
>The above grammar contains a shift/reduce conflict at
>the definitions if-then, if-then-else.
>For this reason I can not put actions within these rules,
>i.e. for example after parsing the condition part.


[I believe he wants to put in embedded actions, which you can't do because
it forces yacc to look more than one token ahead. -John]








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