From: Robert Dober Date: 2008-11-20T01:31:19+09:00 Subject: Re: Ever heared of XRuby before? On Wed, Nov 19, 2008 at 7:28 AM, Charles Oliver Nutter wrote: > Xie Hanjian wrote: >> >> XRuby was started by yawl and continued by dreamhead at about the same >> time JRuby created, but JRuby had only an interpreter then (I think) when >> XRuby released its ruby to java bytecode compiler. > > This is basically true. JRuby's compiler was not actually completed and > released until 2008, though some experimentation had happened earlier. I > spoke with XRuby guys frequently in 2006 and 2007, and we generally agreed > that while XRuby had already a much better compiler, JRuby's runtime and > core classes were further along. As a result of JRuby's core classes being > more "correct", we were able to run Rails in 2006, which is largely why Sun > and Thoughtworks became so interested in JRuby during late 2006 and early > 2007. > > I still believe XRuby has something valuable the community could really use: > perhaps the closest-to-correct Antlr grammar for Ruby yet created. I'd love > for others to take it over and bring it to completion. Thanx folks I was really impressed by the performance of XRuby. By looking at the Hacking guide it seems like an MRI Ruby running on Java instead of C. Big difference would be that there is not an AST to be interpreted but a Java program that is compiled from Ruby and which implements the dynamic features of Ruby as an interpreter. Right? Cheers Robert -- Ne baisse jamais la tête, tu ne verrais plus les étoiles. Robert Dober ;)