def eval_attrs
      result = {}
      @attrs.each_pair do |k,v|
        result[k.to_sym] = instance_eval(k.to_s)
      end
      result
    end
def eval_attrs
      result = {}
      @attrs.each_pair do |k,v|
        result[k.to_sym] = instance_eval(k.to_s)
      end
      result
    end
Copy attributes with eval

 @retun [Hash] hash

 @example
   node :some_node d:
     param_1 1
     param_2 run{ param_1 + 2}
   end

   node.attrs #=> {:param_1 => 1, :param_2 => Proc}
   node.eval_attrs #=> {:param_1 => 1, :param_2 => 3}