>>> On Tue, 29 Jul 2003 10:00:03 +0900,
  >>> "Rodrigo" == "Rodrigo B. de Oliveira" <rodrigob / interact-tv.net> wrote:

  Rodrigo> I'm evaluating language/frameworks for creating a toy language
  Rodrigo> compiler and I'd love to use ruby. Unfortunately I couldn't find
  Rodrigo> a mature parser generator for ruby (automatic AST generation is
  Rodrigo> a plus). Advices?

'racc' is pretty stable, I think.  'rockit' is newer, but includes
automatic AST support.

    racc	http://raa.ruby-lang.org/list.rhtml?name=racc
    rockit	http://raa.ruby-lang.org/list.rhtml?name=rockit

-- 
cheers, Mike