# File lib/treetop/compiler/node_classes/character_class.rb, line 4
      def compile(address, builder, parent_expression = nil)
        super
        
        builder.if__ "has_terminal?(#{grounded_regexp(text_value)}, true, index)" do
          assign_result "instantiate_node(#{node_class_name},input, index...(index + 1))"
          extend_result_with_inline_module
          builder << "@index += 1"
        end
        builder.else_ do
          "terminal_parse_failure(#{single_quote(characters)})"
          assign_result 'nil'
        end
      end