Just playin

gistfile1.rb

#!/usr/bin/env ruby
module DarkHorse
  
  class << self
    def included(base)
      base.send(:extend, DarkHorse::SingletonMethods)
    end
  end
  
  
  #
  # 
  #
  module ClassMethods
    
  end
  
  #
  # 
  #
  module SingletonMethods
    
    def dark_horse(method)
      if method_defined? method
        saddle_up method
      else
        @saddle_stack ||= []
        @saddle_stack << method.to_sym
      end
    end
    
    def method_added(method)
      if @saddle_stack.include? method.to_sym
        @saddle_stack.delete method.to_sym
        saddle_up method
      end
      super
    end
    
    def saddle_up(method)
      alias_method "saddled_#{method}", method
      define_method method do |*args|
        puts "Saddling #{method}"
        send "saddled_#{method}", *args
      end
    end
    
  end
  
  
end


class Test
  
  include DarkHorse
  
  dark_horse :the_night
  dark_horse :the_day
  
  def the_day
    puts "it's the day"
  end
  
  def the_night
    puts "it's the night"
  end
  
end