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From: schizophonic@iol.it
Subject: Re: How is an ADA compiler done?
Date: 1996/10/29
Message-ID: <555e28$v6c@mikasa.iol.it>#1/1
X-Deja-AN: 192949509
references: <54u38v$g9o@mikasa.iol.it> <dewar.846423013@merv>
organization: Italia Online
newsgroups: comp.lang.ada
Date: 1996-10-29T00:00:00+00:00
List-Id: <comp.lang.ada>


dewar@merv.cs.nyu.edu (Robert Dewar) wrote:

>Are atrtibute grammars used? Yes by one or two compilers, No by most. I don't
>think it is a particularly helpful formalism. At least one commercial compiler,
>the DDCI compiler does, as far as I know use this approach, but on the other
>hand, it is much later than expected, so it is certainly not a demonstration
>that this technique is specially effective (it is also not a demonstraion
>to the contrary either, there are MANY things that can make compilers later
>than hoped, as all of us in the business know well!)

Sounds strange; in my teacher's opinion, nowadays about the 50% of
commercial compilers are based on attribute grammars; in facts the
formalism was developed from the state of the art in the compiler's
algorithm (at least, the state of the art when Knuth started his
work). Is Ada (now I wrote it exactly) an exception, or is my teacher
wrong?

z