module CellSet
  class Cell
    ATTRIBUTES = [:formatted_value, :ordinal, :value]

    include Attributes
    include ActiveModel::Serializers::JSON
    include ActiveModel::Serializers::Xml
    self.include_root_in_json = false

    def from_json(*)
      super.tap{|obj| obj.freeze}
    end

    def ordinal=(ordinal)
      @ordinal = if ordinal.is_a?(Fixnum)
       ordinal
      elsif ordinal.is_a?(String)
       Integer(ordinal)
      else
       throw ArgumentError
      end
    end
  end
end