From: Minero Aoki <aamine@...>
Date: 2003-11-22T10:59:24+09:00
Subject: Re: Ripper (Ruby Language Parser) to be imported in the standard library?

Hi,

  In mail "Ripper (Ruby Language Parser) to be imported in the standard library?"
    surrender_it@yahoo.it (gabriele renzi @ google) wrote:

> I think the need to use a parser/lexer for the ruby syntax is quite
> important for everyone taht wants to write tools to enhance the
> programming experience

agreed.

FYI, I'm developping newer version of Ripper, Ruby Parser Extention.
Now almost all works are done.  Notable change is:

  * Ruby 1.8 syntax support.
  * Ruby's parse.y compatible. (Just #undef RIPPER)
  * NO backward compatibility  :-\

Example:

  ~/c/ripper % head tools/strip.rb
  last_is_void = false
  ARGF.each do |line|
    if line.strip.empty?
      puts() unless last_is_void
      last_is_void = true
    elsif /\A\#/ === line
      ;
    else
      print line
      last_is_void = false
  ~/c/ripper % ruby sample/lex.rb tools/strip.rb | head
  ["ident", "last_is_void"]
  ["sp", " "]
  ["op", "="]
  ["sp", " "]
  ["kw", "false"]
  ["nl", "\n"]
  ["const", "ARGF"]
  ["period", "."]
  ["ident", "each"]
  ["sp", " "]


If you are interested in the latest ripper, check it out from
my CVS repository:

  % cvs -d :pserver:anonymous@cvs.loveruby.net:/src co ripper

Note that not all samples are rewritten for current ripper.


Regards,
Minero Aoki