# This module allows to define module configuration variables.

# see https://viget.com/extend/easy-gem-configuration-variables-with-defaults
 
module Configuration
  def configuration
    yield self
  end
  def define_setting(name, default = nil)
    class_variable_set("@@#{name}", default)
    define_class_method "#{name}=" do |value|
      class_variable_set("@@#{name}", value)
    end
    define_class_method name do
      class_variable_get("@@#{name}")
    end
  end
  private
  def define_class_method(name, &block)
    (class << self; self; end).instance_eval do
      define_method name, &block
    end
  end
end