Contents

module Superstore
  module Types
    class RangeType < Base
      class_attribute :subtype

      def serialize(range)
        if range
          [
            serialize_for_open_ended(range.begin),
            serialize_for_open_ended(range.end)
          ]
        end
      end

      def deserialize(range_tuple)
        if range_tuple.is_a? Range
          range_tuple
        elsif range_tuple.is_a?(Array)
          range = convert_min(:deserialize, range_tuple[0]) .. convert_max(:deserialize, range_tuple[1])
          cast_value(range)
        end
      end

      def cast_value(value)
        if is_beginless_date_range?(value)
          nil
        elsif value.is_a?(Range) && (value.end.nil? || value.begin <= value.end)
          value
        elsif value.is_a?(Array) && value.size == 2
          begin
            range = convert_min(:cast_value, value[0])..convert_max(:cast_value, value[1])
            cast_value(range)
          rescue ArgumentError
          end
        end
      end

      private

      def serialize_for_open_ended(value)
        subtype.serialize(value)
      end

      def convert_min(method, value)
        subtype.send(method, value)
      end

      def convert_max(method, value)
        subtype.send(method, value)
      end

      def is_beginless_date_range?(value)
        (value.is_a?(Range) && value.begin.nil? && value.end.is_a?(Date)) ||
        (value.is_a?(Array) && value[0].nil? && value[1].is_a?(Date))
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
superstore-3.0.0	lib/superstore/types/range_type.rb