Printing source code while running

jkao has asked for the wisdom of the Perl Monks concerning the following question:

As a lazy programmer, I want to debug without using the debugger or having to add print statements. In particular, it would be really nice if there was a way to have Perl print each line of the source code (in the package being debugged) as it runs, possibly along with the values of any variables used in that line. Something like stepping through code in the Perl debugger, except without having to step through code. Is such a thing possible?

Comment on Printing source code while running

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Re: Printing source code while running by davido (Cardinal) on Jul 21, 2005 at 08:18 UTC
Something like Devel::Trace? It's there. You just have to look. The module's brief description is: "Print out each line before it is executed (like sh -x)". Dave	[reply]
Re^2: Printing source code while running by jkao (Beadle) on Jul 21, 2005 at 08:47 UTC
Whoops, thanks for the pointer. Apparently "trace" is the magical keyword that I didn't search for. It looks like Devel::Trace and Debug::Trace both do a subset of what I want... see also Automatic debugging	[reply]
Re: Printing source code while running by tomhukins (Curate) on Jul 21, 2005 at 09:26 UTC
Although I like the Devel::Trace module that others have suggested, I sometimes find it too verbose. Last week I used Sub::WrapPackages to log subroutine calls within certain packages, as well as their input and output. You could also use Aspect's `before` and `after` hooks to provide similar functionality.	[reply] [d/l] [select]
Re: Printing source code while running by anonymized user 468275 (Curate) on Jul 21, 2005 at 08:31 UTC
Note that you don't need to modify your code to do this, see Re: Show me the subroutines? One world, one people	[reply]