When you talk about package scope, do you mean you want to listen to specific call flows?

If so, then Joost is right, and this is a job for Aspect . Version 0.10 will be out today.

Here is how to print foo each time Employee::calc_* is called, but only if Company::calc_salaries exists in the call flow. So if the call flow is Test::test_employee ... Employee::calc_salary, then it will not be printed: 

  use Aspect;
  before { print 'foo' }
     call qr/^Employee::calc_/ &
     cflow company => 'Company::calc_salaries';

[download]

There is also the Listenable aspect (Aspect-0.10), for a full implementation of Observer. But because you have pointcuts, you can fire events only in some call flow. Which you cannot do with normal Observer.

In reply to Re: Package level scope callbacks. by mvc
in thread Package level scope callbacks. by BrowserUk

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