From: "F. Senault" <fred@...>
Date: 2007-07-25T18:00:06+09:00
Subject: Re: Help: Get list of modules which are included in the class

Le 25 juillet � 08:44, FireAphis@gmail.com a �crit :

> I think that Chirag wanted to get only M2 and as you can see we get M1
> as well. I personally think that there is no way to solve this. As far
> as I know Ruby holds its ancestors internally in a plain list and
> doesn't remember the hierarchy. Can someone tell more on this matter?

You can always build the list yourself :

#! /usr/local/bin/ruby

class Module
  attr_accessor :children
  def included(c)
    @children ||= []
    @children << c
  end
end

module M1
end

module M2
  include M1
end

class C1
  include M2
end

class C2 < C1
  include M2
end

C1.ancestors.each { |x| puts "#{x} : #{x.children.inspect}" }

p C1.ancestors.select { |x| x.instance_of?(Module) && x.children && x.children.include?(C1) }

Gives :

C1 : nil
M2 : [C1, C2]
M1 : [M2]
Object : nil
Kernel : nil
[M2]

(Not very much tested, but the idea is there, I think.)

Fred
-- 
I can imagine the moment   Breaking out through the silence   All the
things that we both might say   And the heart it will not be denied
'Til we're both on the same damn side   All the barriers blown away
                                        (Peter Gabriel, Come Talk to Me)