From: slowhog <henryjen@...>
Date: 2010-01-26T17:33:17+09:00
Subject: Re: Is there a way to have instance_eval cannot call 	private/protected method?

On Jan 25, 10:57 pm, slowhog <henry...@ztune.net> wrote:
> Hi,
>
> Is there any mechanism to do what instance_eval but honor the
> visibility?


I probably should clarify that I would like to know if there is a
'right' way to do it, other than hacking something like another layer
to be the 'API' object which hide the real object.

Cheers,
Henry

> I want to something like following, but would like the
> block passed to real_object can only only have access to public
> methods.
>
> I did a little search, seems like 1.8.5 does that, but was changed in
> 1.8.6[1]. While I don't know the history, I am interested to learn
> about the rational, and if there is a replacement for that behavior.
>
> Thanks in advance,
> Henry
>
> [1]http://jamesgolick.com/2007/9/28/ruby-1-8-5-_eval-methods-are-subject...
>
> class RealObject
>   private
>     def method1(param)
>       puts "Test Method 1: #{param}"
>     end
>   public
>     def method2(param)
>       puts "Test Method 2: #{param}"
>     end
> end
>
> def real_object(&block)
>   x = RealObject.new
>   x.instance_eval &block
> end
>
> real_object {
>   method2 "m2"
>   method2 "m2.2"
>   method1 "please fail me"
>
>
>
> }