proxy.rb

class Proxy < defined?(BasicObject) ? BasicObject : Object
  instance_methods.each { |m| undef_method(m) if m.to_s !~ /^__/ }

  def initialize(target, options = {}, &block)
    @proxy_owner = options[:owner]
    @proxy_target = target

    extends = Array(options[:extend])
    extends << ::Module.new(&block)
    extends.each { |m| m.send(:extend_object, self) }
  end

  def proxy_target
    @proxy_target
  end

  def proxy_owner
    @proxy_owner
  end

  def method_missing(name, *args, &block)
    @proxy_target.send(name, *args, &block)
  end
end