module Stove::Mixin::Optionable::ClassMethods

Public Instance Methods

option(name, initial = UNSET_VALUE) click to toggle source

This is a magical method. It does three things:

  1. Defines a class method getter and setter for the given option

  2. Defines an instance method that delegates to the class method

  3. (Optionally) sets the initial value

@param [String, Symbol] name

the name of the option

@param [Object] initial

the initial value to set (optional)
# File lib/stove/mixins/optionable.rb, line 24
def option(name, initial = UNSET_VALUE)
  define_singleton_method(name) do |value = UNSET_VALUE|
    if value == UNSET_VALUE
      instance_variable_get("@#{name}")
    else
      instance_variable_set("@#{name}", value)
    end
  end

  define_method(name) { self.class.send(name) }

  unless initial == UNSET_VALUE
    send(name, initial)
  end
end