Re: It's Not Just for Text Anymore

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#29

From: Darrell Raymond
Date: Wed, 22 Jul 1992 13:02

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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

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Newsgroups: comp.text.sgml
Path: arc1-ca.pugleaf.net!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
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