From: Daniel Brumbaugh Keeney <devi.webmaster@...>
Date: 2008-03-09T03:09:41+09:00
Subject: Re: Ruby tools to develop compilers

On Wed, Mar 5, 2008 at 2:47 PM, Daniel Brumbaugh Keeney wrote:
> Ruby-lex isn't a lexer written in Ruby usable for other grammars, it
>  is a lexer for the ruby language itself.

Please forgive my error, I was thinking of the RubyLex class included
in IRB. It appears there is a project of the same name that can be
found at the links below. To add to the confusion, RubyLex files end
in .rl, the same as Ragel. For the education of this mailing list,
I've copied the introduction of its README.

Lexical analyzer generator V1.3 by Harald Grosse.

   This extension adds to ruby a functionality to work with lex for C programs
   as well as for ruby Code. It reads the grammar specification, modify the
   code so that lex accepted the ruby elements, compile this code with flex
   to lex.yy.c and build an comparable Ruby coded analayzer from this file.

   Not all features of lex are implemented.

http://raa.ruby-lang.org/project/ruby-lex/
http://www.less.de/download/ruby-lex-1.4.tgz

Daniel Brumbaugh Keeney