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From: wclodius@earthlink.net (William Clodius)
Newsgroups: comp.compilers
Subject: Re: Parsing Fortran, was specifying semantics
Date: Fri, 4 Jul 2014 15:57:53 -0600
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glen herrmannsfeldt <gah@ugcs.caltech.edu> wrote:

> <snip>
> -- glen
> [To parse a Fortran statement you first have to decide whether it's an
> assignment or something else, after which you can use a simple
> contnext sensitive longest match to find the tokens.  To see if it's
> an assignment, you look for an = sign that is not followed by a comma
> that is not inside parens, being sure to skip over 'literal' and
> 9hHollerith strings and noting that in typical dialects the statement
> REAL*4HFOO does not contain a Hollerith string.. It wasn't as hard as
> it sounds. -John]

WIth the proviso that what is termed an assignment in the initial
analysis may be further qualified as a statement function definiton in
the semantic analysis.
[Right.  You have to look up the symbol and see if it's defined as an
array. -John]