>>> "Frans" == Frans Englich <[EMAIL PROTECTED]> writes:
> I would prefer to do this at the Bison/Parser level because it is > convenient: I have access to various information passed to the > parse function, You can easily make them available to the scanner. And in fact, you probably should, to have a clean, pure, interface bw the two. > the YYERROR macro, and the error function. There is nothing wrong with defining a token, but not allowing it in the grammar. Just return it when there is a comment (and you don't want them), then you'll have the expected result: a parser error. > The problem I see if I let Flex return a COMMENT token and add a > non-terminal in the Bison grammar to implement the checking, is how > to make it play well with the other rules -- the token gets in the > way. Of course you must not try to use the token COMMENT when comment are valid, just discard them. _______________________________________________ Help-bison@gnu.org http://lists.gnu.org/mailman/listinfo/help-bison
