home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.text.sgml
- Path: sparky!uunet!cs.utexas.edu!torn!watserv1!watdragon.waterloo.edu!drraymon
- From: drraymon@watdragon.waterloo.edu (Darrell Raymond)
- Subject: Re: It's Not Just for Text Anymore
- Message-ID: <BrsK7L.6M5@watdragon.waterloo.edu>
- Organization: University of Waterloo
- References: <710783547snx@sgmlinc.com> <92202.164904U35395@uicvm.uic.edu> <ETNKNA.92Jul22122415@hisoy2.etn.ericsson.se>
- Date: Wed, 22 Jul 1992 13:02:09 GMT
- Lines: 25
-
- In article <ETNKNA.92Jul22122415@hisoy2.etn.ericsson.se>, etnkna@hisoy2.etn.ericsson.se (Aksnes Knut-Havard) writes:
- >On Tue, 21 Jul 1992 22:09:35 GMT, drraymon@watdragon.waterloo.edu (Darrell Raymond) said:
- >> This example doesn't work for several reasons. First, the BNF of C
- >> doesn't define C - that requires a lot of semantic information as well
- .
- .
- .
- >> Finally, are you confusing two
- >> languages? - namely, the language consisting of the set of strings that
- >> represent valid C programs (which is context free)
- >
- >The set of all strings representing valid C programs can not be
- >described by a context free grammar, a superset of all valid C programs
- >can be recognised by a context free grammar. To recognize correct C
- >programs you will need a semantical analysis as well.
-
- Your correction is noted. It should be clear from the opening of my
- paragraph that I know about the need for semantic information.
-
- Sheesh! You can't get away with anything in this group...but just
- try to get people to use the term "data model" in a precise fashion!
-
- :-)
-
- -Darrell
-