Column is not hooked up yet and many things are missing but this is first nearly working ripper example for JRuby.

long_time_coming.txt

system ~/work/jruby ripper * 935% jruby -e 'require "ripper"; require "pp"; pp Ripper::SexpBuilder.new("1 + 2").parse'
jruby -e 'require "ripper"; require "pp"; pp Ripper::SexpBuilder.new("1 + 2").parse'
[:program,
 [:stmts_add,
  [:stmts_new],
  [:binary, [:@int, "1", [1, 0]], :+, [:@int, "2", [1, 0]]]]]
system ~/work/jruby ripper * 936% mri19 -e 'require "ripper"; require "pp"; pp Ripper::SexpBuilder.new("1 + 2").parse'
mri19 -e 'require "ripper"; require "pp"; pp Ripper::SexpBuilder.new("1 + 2").parse'
[:program,
 [:stmts_add,
  [:stmts_new],
  [:binary, [:@int, "1", [1, 0]], :+, [:@int, "2", [1, 4]]]]]

👍