From: Robert Feldt <feldt@...>
Date: 2001-02-20T01:55:08+09:00
Subject: [ruby-talk:11118] Re: Auto-magically determine your class/method in Ruby

On Tue, 20 Feb 2001, Bryan Zarnett wrote:

> Is their a way to auto-magically determine the class
> and method that called an operation in another class.
> For example, I have a logger class that would like to
> embed in the output line the Class and operation that
> logged a message. I don't want to have to pass this
> information as an argument if I have to.
> 
There are probably much easier and nicer ways (using Kernel#caller?) but
I've contemplated doing something like (*VERY* ugly):

* Set a trace_func in callee:
	trace_func should catch "return" event and save id (method) and
        classname (class) for access from callee
* (Rest of callee code in proc or method accessible from trace_func)
* Return from callee
* (trace func now invoked, extracts info and calls rest of callee
code) End of trace_func unset this trace_func
* "Real" return to caller

We'll probably all laugh at this solution when one of the Ruby gurus comes
along with the right way to do it... :-)

/R