3 Dec
2018
3 Dec
'18
11:31 a.m.
Your message dated: Sun, 02 Dec 2018 22:36:59 -0500
--------
I did just that. The National Bureau of Standards picked it up
in NBS Handbook 131, "Using ANS FORTRAN" (1980). It is expressed
in the same formalism that Burroughs used for Algol.
Doug
a couple of more data points:
Arthur Sale wrote an article on classifying fortran statements,
Volume 14 Number 1 of the Computer Journal that describes how to
classify fortran statements into 1 of 36 types.
URL:https://www.researchgate.net/profile/Arthur_Sale/publication/220459829_…)
by using the above, you can do some preprocessing to correct spacing,
line continuations, remove sequence numbers (cols 73-80) and other
formatting to make parsing easier.
John Levine wrote a ftn77 subset parser using lex and yacc (the shar
file that I have is dated Nov 1988).
-ron
===============================================================================
Ron Young rly1(a)embarqmail.com