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From: johnl@ima.UUCP
Newsgroups: mod.compilers
Subject: Dynamic-grammar compilers
Message-ID: <512@mntgfx.MENTOR.COM>
Date: Tue, 10-Feb-87 14:32:54 EST
Article-I.D.: mntgfx.512
Posted: Tue Feb 10 14:32:54 1987
Date-Received: Thu, 12-Feb-87 04:34:30 EST
Sender: johnl@ima.UUCP
Reply-To: nmyers@mntgfx.MENTOR.COM (Nathan Myers)
Organization: Mentor Graphics, Beaverton OR
Lines: 9
Keywords: grammar dynamic parser variable syntax
Approved: compilers@ima.UUCP

I recommend doing a literature search for papers by David Sandberg.
He's a young professor at Oregon State U. who built a compiler with
a freely redefinable syntax.  The compiler ran at 2000 lines/minute on
a Vax, fast enough to be usable, I think.  I remember it was possible
to define a "|x|" absolute value operator, and he demonstrated a header
file to make ";" statement delimiters optional.  Operator precedence
was specifyable, pair by pair, but that would get huge in a real system.

Nathan Myers
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