lib/ravensat/ast/node.rb in ravensat-1.0.8 vs lib/ravensat/ast/node.rb in ravensat-1.0.9

@@ -62,14 +62,18 @@
       self if block_given?
     end
 
     def &(object)
       raise TypeError.new("#{object.class} can't be coerced into Ravensat::Node") unless object.is_a? Node
+      return self if object.is_a? NilNode
+
       AndNode.new(self, object)
     end
 
     def |(object)
       raise TypeError.new("#{object.class} can't be coerced into Ravensat::Node") unless object.is_a? Node
+      return self if object.is_a? NilNode
+
       OrNode.new(self, object)
     end
 
     def to_s
       self.class.name