Macro for creating nested properties such as properties based on hash keys

nested_properties.cr

macro define_option_property(*options)
  {% for option in options %}
    def {{option.id}}?
      @options[:{{option}}]
    end
  {% end %}
end

class CLI
  OPTIONS = {
    :suppress_errors => false,
    :colored_output  => true,
  }

  {% for option in OPTIONS.keys %}
    define_option_property {{option.id}}
  {% end %}

  def initialize
    @options = OPTIONS
  end
end

cli = CLI.new
cli.colored_output?  # => false
cli.suppress_errors? # => false