1 files changed, 28 insertions, 2 deletions
diff --git a/lib/utils.rb b/lib/utils.rb
index e3b96a9..1df8305 100644
--- a/lib/utils.rb
+++ b/lib/utils.rb
@@ -1,11 +1,37 @@
 module Virgil
-  class Utils
+  module Utils
     def self.unfold(attrs)
       ret = ""
       attrs.each do |key, value|
-        ret += " #{key.to_s}=\"#{value}\""
+        if value.nil? then
+          ret += " #{key.to_s}"
+        else
+          ret += " #{key.to_s}=\"#{value}\""
+        end
       end
       ret
     end
+
+    class Generic
+      def initialize(attrs, tag = nil, &block)
+        tag = self.class.name.split('::').last.downcase if tag.nil?
+        @tag = "<#{tag}" +
+          Utils::unfold(attrs) +
+          ">" +
+          self.instance_eval(&block) +
+          "</#{tag}>"
+      end
+      def to_s
+        @tag
+      end
+    end
+    class GenericSingle < Generic
+      def initialize(attrs, tag = nil)
+        tag = self.class.name.split('::').last.downcase if tag.nil?
+        @tag = "<#{tag}" +
+          Utils::unfold(attrs) +
+          ">"
+      end
+    end
   end
 end