From: Xavier Shay <contact@...>
Date: 2008-10-28T16:43:26+09:00
Subject: Re: Access module's anonymous parent

Pit Capitain wrote:
> 2008/10/27 Xavier Shay <contact@rhnh.net>:
>> I'm autoloading a file, it contains this part, so it's basically the
>> public interface.
>>
>>> class self::A
>>>   parent.foo
>>
>> And for that reason this is a much nicer, I think. But if it can't be
>> done like this, it can't be done...
> 
> Xavier, I don't know why you want to have an anonymous module with a
> local constant
Hot loading of code. I'm being a bit anal about it, also I'm just 
curious :)
Would be nice to not need the dependent_class bit, but it's not so bad.

I had to hack your code a bit to get what I want, which is this:

m = Module.new
m.instance_eval do
  self::Depend = []

  def self.const_missing(name)
    const_set(name, Class.new)
  end

  def self.dependent_class(cls, &blk)
    parent_module = self
    (class << cls; self; end).send(:define_method, :depend) do |file|
      parent_module::Depend << file
    end
    cls.class_eval(&blk)
  end

  dependent_class self::A do
    depend("afile.rb")

    def foo
      "foo"
    end
  end
end

a = m.const_get('A').new
puts a.foo # => foo
puts m::Depend.inspect # => ["afile.rb"]

Thanks!
Xavier
-- 
Posted via http://www.ruby-forum.com/.