module BenchmarkDriver

def keyword_init_struct(*args, &block)
  ::Struct.new(*args).tap do |klass|
    klass.prepend(Module.new {
      # @param [Hash{ Symbol => Object }] args
      def initialize(**args)
        args.each do |key, value|
          unless members.include?(key)
            raise ArgumentError.new("unknown keywords: #{key}")
            next
          end
          public_send("#{key}=", value)
        end
      end
    })
    klass.prepend(Module.new(&block))
  end
end