introducing class variable and typed arguments

lib/parfait/variable.rb

@@ -0,0 +1,9 @@
+module Parfait
+  class Variable < Object
+    def initialize type , name , value = nil
+      @type , @name , @value = type , name , value
+      @value = 0 if @type == :int and value == nil
+    end
+    attributes [:type , :name, :value]
+  end
+end