Module: Polyfill::V2_3::Struct

Defined in:
lib/polyfill/v2_3/struct.rb

Instance Method Summary collapse

Instance Method Details

#dig(head, *rest) ⇒ Object 



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# File 'lib/polyfill/v2_3/struct.rb', line 4

def dig(head, *rest)
  [head, *rest].reduce(self) do |value, accessor|
    next_value =
      case value
      when ::Array
        value.at(accessor)
      when ::Hash
        value[accessor]
      when ::Struct
        value[accessor] if value.members.include?(accessor)
      else
        begin
          break value.dig(*rest)
        rescue NoMethodError
          raise TypeError, "#{value.class} does not have a #dig method"
        end
      end

    break nil if next_value.nil?
    next_value
  end
end