[antlr-interest] added "why use antlr" page

Terence Parr parrt at cs.usfca.edu
Tue Aug 5 19:20:14 PDT 2003


On Tuesday, August 5, 2003, at 05:34 PM, David Benn wrote:

> Terence
>
> I like the page. Most of my initial compilers/interpreters (circa 1991)
> were of the hand-crafted recursive descent variety too, which I guess
> explains why ANTLR feels fairly natural to me (vs tools like lex+yacc).

hooray for readable code!

>
> I would suggest adding a paragraph that emphasises a) the near
> homogeneity of lexer, parser, and tree walker notations,

Ah good point.

>  and b) the
> utility of AST generation and walking for, among other things,
> separating front ends (language grammars) from back-ends (code
> generation etc), and as a useful intermediate language for 
> interpreters.

Thanks...

>
> I notice that support for Sather generation has gone away (according to
> this page). Just a lack of demand? I never used it so it doesn't bother
> me. Just curious. I've yet to make the transtion to 2.7.2.

The author didn't want to support any more and almost nobody used it ;)

>
> Thanks for a great tool BTW. I have used it for Masters thesis and
> industry work for about four years now.

Cool. :)  Perhaps you'd add a testimonial to the site? ;)

Ter
--
Professor Comp. Sci., University of San Francisco
Creator, ANTLR Parser Generator, http://www.antlr.org
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