Perl source filter question

[Mike Cramer <cramer@webkist.com>]

I'm looking for something along the lines of a perl source filter that 
will take a source file -- cgi script, perl module, whatever -- and 
without actually *running* the program, will list all of the functions 
called. A script like this:

####
use CGI;

my $q = new CGI;
print $q->header("text/plain");
print qq|this is a test\n|;
sleep(30) if (1==2);
####

would result in something like this:

####
use
my
CGI::new
print
CGI::header
print
sleep
####

Obviously, whether "sleep" is printed would depend on how it deals with 
code that might be optimized away. Devel::DProf seems to work by 
actually running the program, which is not what I want. B::Deparse seems 
even closer, but its output would still require significant parsing.

Any hints?

--
Mike Cramer
http://www.webkist.com/ | AIM: MikeWebkist

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