From: "Florian Groß" <florgro@...>
Date: 2005-05-11T05:56:43+09:00
Subject: Re: Does any Ruby parser exist ?

Lothar Scholz wrote:

>>>Does any Ruby parser existother then the internal one inside the ruby
>>>interpreter. I found a few projects but most of them seems to be dead.
> FG> Ripper has been merged into 1.9 and is part of the windows one-click
> FG> installer -- its grammar rules will thus always be up-to-date in the future.
> 
> How compatible are these rules with 1.8 ?

It uses the same rules as the platform it is build against. The 
one-click installer is on 1.8.2 and comes with Ripper so it works there.

> FG> That aside there is also a few lexers like the IRB one and the one used
> FG> by the syntax library that does Ruby code highlighting.
> 
> They are all ugly hacks that are just doing a fraction of the ruby
> grammer. Good for there special purpose but i need something
> different. And none of them can give me line/column positions of an
> indentifier.

IRB's lexer will give you the column and line numbers. It also ought to 
lex quite a lot of Ruby. Of course having a complete parser at all times 
is hard without using Ruby's built-in grammar.