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All the Perl that's Practical to Extract and Report

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Programmatic Discovery of Package Variables in Perl? 6 Comments More | Login | Reply /

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  • PadWalker can see both lexical and package variables, just fill %pad_vars with peek_our first and let peek_my override it (since lexical variables hide package variables).

    • This works for vars.pm and $Fully::Qualified::Variables too?

      • Yes, but only if they have had a value assigned to them. Otherwise they aren't really variables yet (just compiler directives to not throw errors if it sees them).

        • Well, it handles $main::foo, but not $other::package::foo. You would need to look in %other::package for it. Hmm, there should be some way of finding out what namespaces exist.

          • Alright, it is ugly, but it gets the job done. This handles everything but var pragma variables that have never been assigned to (they don't really exist yet). This version also has the benefit of displaying package and lexical variables differently, so you can easily spot the masking effect. Hmm, but I think there might be a bug in the case where you have

            {
                    our $foo;
                    {
                            my $foo;
               

            • I take it back, since he is using the address of the variable as the key it works fine, and there is the order doesn't matter when you build the hash.

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