Ruby Proxy

proxy.rb

class Proxy
  def self.proxy(context, &blk)
    p = new(context)
    p.__proxy &blk
    p
  end

  def initialize(context)
    @context = context
  end

  def method_missing(method, *args, &blk)
    __object.send(method, *args, &blk)
  end

  def __proxy &blk
    @blk = blk
  end

  def __object
    @object ||= @blk.call(@context)
  end
end