* lib/rss/parser.rb (RSS::ListenerMixin#known_class): define to

  work with ruby 1.8.x too.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17674 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 15 insertions, 3 deletions

diff --git a/lib/rss/parser.rb b/lib/rss/parser.rb
index 0cba624bcb..2e137da3ed 100644
--- a/lib/rss/parser.rb
+++ b/lib/rss/parser.rb
@@ -361,9 +361,7 @@ module RSS
     def start_else_element(local, prefix, attrs, ns)
       class_name = self.class.class_name(_ns(ns, prefix), local)
       current_class = @last_element.class
-      if class_name and
-          (current_class.const_defined?(class_name, false) or
-           current_class.constants.include?(class_name.to_sym))
+      if known_class?(current_class, class_name)
         next_class = current_class.const_get(class_name)
         start_have_something_element(local, prefix, attrs, ns, next_class)
       else
@@ -379,6 +377,20 @@ module RSS
       end
     end
 
+    if Module.method(:const_defined?).arity == -1
+      def known_class?(target_class, class_name)
+        class_name and
+          (target_class.const_defined?(class_name, false) or
+           target_class.constants.include?(class_name.to_sym))
+      end
+    else
+      def known_class?(target_class, class_name)
+        class_name and
+          (target_class.const_defined?(class_name) or
+           target_class.constants.include?(class_name))
+      end
+    end
+
     NAMESPLIT = /^(?:([\w:][-\w\d.]*):)?([\w:][-\w\d.]*)/
     def split_name(name)
       name =~ NAMESPLIT