DeepOpenStruct with recursive to_h

deep_open_struct.rb

class DeepOpenStruct < OpenStruct
  def to_h
    convert_to_hash_recursive self.dup
  end

  def self.load item
    raise ArgumentError, "DeepOpenStruct must be passed a Hash or Array" unless(item.is_a?(Hash) || item.is_a?(Array))
    self.convert_from_hash_recursive item
  end

  private

  def self.convert_from_hash_recursive obj
    result = obj
    case result
      when Hash
        result = result.dup
        result.each do |k,v|
          result[k] = convert_from_hash_recursive(v)
        end
        result = DeepOpenStruct.new result
      when Array
        result = result.map { |v| convert_from_hash_recursive(v) }
    end
    result
  end

  def convert_to_hash_recursive obj
    result = obj
    case result
      when OpenStruct
        result = result.marshal_dump
        result.each do |k,v|
          result[k] = convert_to_hash_recursive(v)
        end
      when Array
        result = result.map { |v| convert_to_hash_recursive(v) }
    end
    result
  end
end