From: David Alan Black <dblack@...>
Date: 2002-07-11T05:32:26+09:00
Subject: Re: Resurrection of the const_added (was class_added) RCR; Re: self_parent

Hello --

On Thu, 11 Jul 2002, Christoph wrote:

> Hi,
>
> this is a resurrection attempt of Michal Rokos class_added RCR
> [ruby-talk:38044] in the modified form of a const_added - see for
> example Matz response in [ruby-talk:38713]
>
> > I'm not going to implement every possible hook.  So when somebody
> > comes with more concrete usage, I will consider this again.  It would
> > be const_added, not class_added.
>
> Implementing this RCR would make it easier to accommodate Tom's
> inner class style programming. For example, by manipulating by
> OuterClass#const_added  of a Class
>
> class OuterClass
>     class AnInnerClass
>     # deeper ..
>     end
>     # more inner classes
>
>  end
>
> would ensure that calling  OuterClass::AnInnerClass.new would
> automatically generate an instance variable @parent_instance
> variable of type OuterClass.

I'm can't quite follow this.  Wouldn't const_added get called when a
constant is added to OuterClass?

  class OuterClass
    def const_added(name,value)  # or something
      ...
    end
    NEW_CONSTANT = 1    # const_added called here
  end

If so, how would this interact with inner classes?


David

-- 
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web:  http://pirate.shu.edu/~blackdav