From: James Britt <jamesUNDERBARb@...>
Date: 2004-07-19T04:28:10+09:00
Subject: Re: Current method

Claus Spitzer wrote:
> How could I know which method (if any) is currently being executed? E.g.
> 
> class Foo
>    def bar
>       self.inspect
>    end
> end
> 
> Tells me which class I'm in, but not which method. How would I go
> about doing that? Cheers

Here is an example based on something I believe Rick Kilmer posted here 
some time ago, plus some additional neat Ruby magic for dynamic code 
tracing (also from Rich, I think, but I might be wrong on that).

# Eval a code block using the original context of the variables
def trace( &block )
   expr = block.call
   puts "trace: #{expr} = #{eval(expr, block)}"
end

# Get the name of the immediate caller
def my_name_is
   caller[0].split( /:in /).last.gsub( /[\'|\`]/, '' )
end

# An example method to demo the previous two helper methods
def something( z )
   puts "My name is  \"#{my_name_is}\""
   x = 5
   y = 7
   trace { "x + y + z" }  # Show this to Java(tm) fans.
end

# Simple method to demo nested calls to my_name_is
# Not quite unit testing, I know ...
def foo
   puts "My name is  \"#{my_name_is}\""
   something( 12 )
end


something 10
foo


James