lib/ustate/query/not.rb in ustate-client-0.0.7 vs lib/ustate/query/not.rb in ustate-client-0.0.8

@@ -1,15 +1,32 @@
 class UState::Query
   class Not < Node
+    attr_reader :a
     def initialize(a)
       @a = a
     end
 
+    def ==(o)
+      o.kind_of? Not and @a == o.a
+    end
+
     def ===(state)
       not @a === state
     end
 
+    def children
+      [@a]
+    end
+
+    def children=(c)
+      raise ArgumentError unless c.size == 1
+    end
+
     def inspect
       inspect_helper @a
+    end
+
+    def mass
+      1 + @a.mass
     end
   end
 end