From: Robert Klemme <bob.news@...>
Date: 2003-06-11T17:49:41+09:00
Subject: Re: Stack Frames, Functions and Variables.



I hacked something together that provides for hooking of methods.  Look
for a thread called "How I'd like method-wrapping to work...".  I can send
it to you directly if you want to.

I'll put it on the wiki as soon as I can access it again.

    robert


"Grzegorz Dostatni" <grzegorz@ee.ualberta.ca> schrieb im Newsbeitrag
news:Pine.LNX.4.44.0306101627070.3875-100000@e5-05.ee.ualberta.ca...
>
> I have a number of questions:
>
> 1. Is it possible to examine current stack frame in ruby. Or move up in
> the stack frame to find the local variables of the function that called
> you?
>
> 2. Can I put a hook that gets called whenever anyone or anything
accesses
> a function AND/OR a variable within an object? I would like to intercept
> that call to create a nice wrapper.
>
> 3. This should be a really easy question to answer:
>
>    Class Foo
> @test = "Hello World"
>    end
>
>    Class Bar
> @test = Foo.new
>
> def bar
> puts @test.@test (???)
> end
>    end
>
> How do I access a local variable of an object pointed to as local
> variable. Is is a scoping problem? Are they just not visible? Should I
> make them public? Should I stand on a crossroads at midnight swinging a
> black cat in a circle thirteen times?
>
> Please help.
>
> Greg
>
> "Many a man may look respectable, and yet be able to hide at will behind
a
> spiral staircase."
> - Pelham (Plum) Grenville  Wodehouse
>
>