From: Pit Capitain <pit@...>
Date: 2006-12-06T06:06:35+09:00
Subject: Re: Method Namespace

Trans schrieb:
> I have need for a general purpose simple namespace construction.
> ...
> This words EXCEPT when super is called in the method  (see the
> test case a the bottom).
> ...

Tom, could you try this version?

   def namespace( mod, &blk )

     # If block is given then create a module, otherwise
     # get the name of the module.
     if block_given?
       name = mod.to_s
       mod  = Module.new(&blk)
     else
       name = mod.basename.downcase
       mod  = mod.dup
     end

     # Include the module. This is neccessary, otherwise
     # Ruby won't let us bind the instance methods.
     include mod

     # Save the instance methods of the module and
     # replace them with a "transparent" version.
     methods = {}
     mod.instance_methods(false).each do |m|
       methods[ m.to_sym ] = mod.instance_method(m)
       mod.instance_eval do
         define_method(m) do
           super
         end
       end
     end

     # Add a method for the namespace that delegates
     # via the Functor to the saved instance methods.
     define_method(name) do
       Functor.new(methods) do |op, mtab, *args|
         mtab[op].bind(self).call(*args)
       end
     end
   end

Regards,
Pit