Re: Q: Error detection/recovery in LEX/YACC (Help)

> I need a little help with error detection/recovery/repair in either or
> both of LEX and YACC (a little snippet of code, even just a few
> productions, would be tremendously appreciated! :).


If you're really interested in error recovery forget about using yacc. I
would suggest taking a look at the gmd tools also known as cocktail. The
toolbox is a suite of utilites for constructing compilers, translators,
etc. It has a LALR(1) parser called coincidently 'lalr'. The tool 'lalr'
features automatic error recovery. It can insert and delete tokens from
the input stream so that parsing can continue. Additionaly, it is claimed
the generated parsers run about twice as fast as yacc generated ones. They
also have a lexical analyzer called 'rex' that is also supposed to be much
faster than 'lex'. Check it out. You can get it from:


gatekeeper.dec.com:/pub/plan/gmd


--Mike


------------------------
Michael Collison
Open Software Foundation
11 Cambride Center
Cambridge, Ma 02142
email: collison@osf.org
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