File: grammar2.citrus

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grammar Calc
  rule number
    (float | integer) {
      def value
        first.value
      end
    }
  end

  rule float
    (integer '.' integer) {
      def value
        text.to_f
      end
    }
  end

  rule integer
    [0-9]+ {
      def value
        text.to_i
      end
    }
  end
end