bin/r2r_show in ruby2ruby-1.2.3 vs bin/r2r_show in ruby2ruby-1.2.4

@@ -1,10 +1,10 @@
 #!/usr/bin/ruby -ws
 
 require 'rubygems'
 require 'ruby2ruby'
-require 'parse_tree'
+require 'ruby_parser'
 
 $h ||= false
 $s ||= false
 
 if $h then
@@ -16,16 +16,16 @@
   exit 1
 end
 
 ARGV.push "-" if ARGV.empty?
 
-parse_tree = ParseTree.new
-ruby2ruby  = Ruby2Ruby.new
+parser    = RubyParser.new
+ruby2ruby = Ruby2Ruby.new
 
 ARGV.each do |file|
   ruby = file == "-" ? $stdin.read : File.read(file)
 
-  sexp = parse_tree.process(ruby, nil, file)
+  sexp = parser.process(ruby, file)
 
   p sexp if $s
 
   puts ruby2ruby.process(sexp)
 end