Re: Wanted: YACC grammar for COBOL

plains!umn-cs!LOCAL!thornley@uunet.UU.NET (David H. Thornley)
Thu, 24 Jan 91 01:33:19 GMT

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Wanted: YACC grammar for COBOL zanzinge@immd2.informatik.uni-erlangen.de (1991-01-22)
Re: Wanted: YACC grammar for COBOL plains!umn-cs!LOCAL!thornley@uunet.UU.NET (1991-01-24)
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Newsgroups: comp.compilers,comp.lang.misc
From: plains!umn-cs!LOCAL!thornley@uunet.UU.NET (David H. Thornley)
Keywords: Cobol, parse, yacc, question
Organization: University of Minnesota, Minneapolis, CSci dept.
References: <1991Jan22.142741.6471@informatik.uni-erlangen.de>
Date: Thu, 24 Jan 91 01:33:19 GMT

In article <1991Jan22.142741.6471@informatik.uni-erlangen.de> zanzinge@immd2.informatik.uni-erlangen.de (M. Zanzinger) writes:
>Does anyone know of a LEX/YACC definition for COBOL?


Can you do a LEX/YACC grammar for COBOL? I never tried it, but some
parts of it (like expressions) looked real weird to me. In other words,
is it LALR(0)?


Former COBOL hacker,


DHT
[I know of no particular reason why it'd be difficult to parse Cobol. It
doesn't look very ambiguous. On the other hand, I haven't actually tried
to write a parser for it. By the way, LALR is a large subset of LR(1), it
does look ahead a token. -John]
--

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