From: Jamis Buck <jgb3@...>
Date: 2004-09-28T01:45:13+09:00
Subject: Re: local_method_missing possible

trans. (T. Onoma) wrote:
> On Sunday 26 September 2004 10:33 pm, jim@freeze.org wrote:
> 
>>>   class A
>>>     def a; puts "here"; end
>>>   end
>>>   class B < A
>>>     def b(meth)
>>>       puts "before"
>>>       send(meth)
>>>       puts "after"
>>>     end
>>>     def local_method_missing(sym, *args)
>>>       if /^a/ =~ meth.to_s
>>>         b(meth)
>>>       end
>>>     end
>>>   end
>>
>>Could you just use super?
>>
>>  class A
>>    def a; puts "in a"; end
>>  end
>>  class B < A
>>    def a
>>      puts "before"
>>      super
>>      puts "after"
>>    end
>>  end
> 
> 
> The idea is to submethod multiple methods in one fell-swoop. Hence:
> 
>   if /^a/ =~ meth.to_s
> 
> If you have any ideas on other ways to do this, I would love to hear them.

Well, it's not very pretty, but what about:

1) aliasing all methods of the subclass to something else (mangling 
them, basically),

2) Using "method_missing" to intercept and redirect calls to those methods,

3) and using "self.class.instance_methods(false).include?(...)" to 
determine whether the method was defined in the subclass or a superclass...

If this isn't clear enough (and it may very well not be!) I could try 
posting some pseudo-code...

- Jamis

-- 
Jamis Buck
jgb3@email.byu.edu
http://www.jamisbuck.org/jamis