From: MenTaLguY <mental@...>
Date: 2005-11-27T02:42:39+09:00
Subject: Re: [ANN] The Ruby Grammar Project

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On Sat, 2005-11-26 at 20:27 +0900, Christian Neukirchen wrote:
> MenTaLguY <mental@rydia.net> writes:
>=20
> > The The Ruby Grammar Project aims to:
> >
> >  1. Develop an ANTLR grammar as an alternative to the YACC grammar whic=
h
> > is ruining everybody's parties these days.
>=20
> In general, a good idea.  However, can there be made a pure-Ruby
> parser from an ANTLR grammar?

Do you mean:

 1. Is it possible to write a complete grammar for Ruby in ANTLR, given
how squirrely its (Ruby's) syntax is?

 2. Does ANTLR have a backend that can generate parsers in Ruby?

The answers are:

 1. Yes.  Ter (who is primarily writing the grammar) seems pretty
confident that if YACC can do it, ANTLR can do it.  Given he's a guy on
the forefront of parser research, I think he can make it happen.

 2. Not yet but eventually.  The grammar will be for the new ANTLR v3,
for which most backends are still being written.  I'm working on the
Ruby backend, though that's under the aegis of the ANTLR project rather
than the The Ruby Grammar Project.

-mental

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