From: Lloyd Zusman <ljz@...>
Date: 2005-02-20T07:47:29+09:00
Subject: Re: Dynamically loading and executing within a new module?

Lloyd Zusman <ljz@asfast.com> writes:

> ES <ruby-ml@magical-cat.org> writes:
>
>>
>> [ ... ]
>>
>> If you don't just want to write an actual module and then call its #init,
>> you could do something like this. Somewhat pseudo:
>>
>> Thread.new do
>>   if fname
>>     mod = eval fname.capitalize
>>     data = File.new(fname, 'r') do |f|
>>              f.read
>>            end
>>     mod.module_eval data
>>     mod.send :init, args
>>     # ...
>>   end
>> end
>>
>> Or sumptin :)
>
> Thanks.  This makes sense.
>
> However, the "eval fname.capitalize" part doesn't create a new module,
> and that's part of what is confusing me about all this.  Given a string
> "Foo", what do I do to it in order to create a module object with that
> name?

Actually, I now realize that I don't need a bona fide named module, but
rather, just a way to associate a name with a module.  Therefore, I
think that I can do it more or less like this:

  modhash = Hash.new
  if fname then
    if modhash.has_key?(fname) then
      mod = modhash[fname]
    else
      mod = Module.new
      modhash[fname] = mod
    end
    data = File.new(fname, 'r') do |f|
             f.read
           end
    mod.module_eval data
    mod.send :init, args
  end

Does this make sense?


-- 
 Lloyd Zusman
 ljz@asfast.com
 God bless you.