|problems with identifiers and keywords... firstname.lastname@example.org (Micha) (2004-10-21)|
|Re: problems with identifiers and keywords... cfc@shell01.TheWorld.com (Chris F Clark) (2004-10-23)|
|Re: problems with identifiers and keywords... email@example.com (glen herrmannsfeldt) (2004-10-24)|
|Re: PL/I parsers, was problems with identifiers and keywords... firstname.lastname@example.org (2004-11-14)|
|From:||email@example.com (Tom Van Vleck)|
|Date:||14 Nov 2004 22:44:44 -0500|
|References:||04-10-148 04-10-170 04-10-174|
|Keywords:||parse, PL/I, history|
|Posted-Date:||14 Nov 2004 22:44:44 EST|
> [I get the impression that there have only been two parsers written
> for PL/I, the IBM one at Hursley and the Freiboughouse one originally
> for Multics. I dunno how they work. -John]
The first Multics PL/I parser was for the EPL compiler,
done in 1966 or so by Bob Morris in TMG. See
There were two PL/I compiler generations for Multics after that, the
Version 1 and Version 2 compilers. Freiburghouse led the groups that
did these, but I do not remember whether they used the same parser.
You could ask Bob.
I had the impression, as an occasional user of IBM PL/I F and the IBM
PL/I Checkout compiler that followed it in the early 1970s, that the
parsers for these compilers were different, based on the kind of
errors they discovered.
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