source_code.rb in reek-1.2.12

- old
+ new

@@ -1,6 +1,5 @@
-require 'ruby_parser'
 require File.join(File.dirname(File.expand_path(__FILE__)), 'config_file')
 require File.join(File.dirname(File.expand_path(__FILE__)), 'tree_dresser')
 
 module Reek
   module Source
@@ -20,10 +19,22 @@
         end
       end
 
       attr_reader :desc
 
-      def initialize(code, desc, parser = RubyParser.new)
+      # At runtime, reek tries to load ripper_ruby_parser. If that succeeds,
+      # reek uses that parser and will be able to handle Ruby 1.9 syntax. On
+      # Ruby versions below 1.9.3, it will fail and reek will use ruby_parser
+      # and handle Ruby 1.8 syntax only.
+      PARSER_CLASS = begin
+                       require 'ripper_ruby_parser'
+                       RipperRubyParser::Parser
+                     rescue LoadError
+                       require 'ruby_parser'
+                       RubyParser
+                     end
+
+      def initialize(code, desc, parser = PARSER_CLASS.new)
         @source = code
         @desc = desc
         @parser = parser
       end
 