Because it's in one use call, it's relatively easy to extract--just pull out everything between use Module::Metadata and the next semicolon, rework it into something a bit safer, and eval it. Or even better, reval it. That's the approach the module's extract_metadata function takes--it constructs a very restrictive Safe container, massages the code into a call to Module::Metadata->new, and evalutes it in the Safe container. 

        $safe->permit_only(qw(:base_core :base_mem));
        $safe->deny(qw(repeat range));

[download]

The actual code is a bit more complicated than this, because it handles nesting and (basic) quoting correctly in case a future metadata field accepts a coderef or something, but that's the gist of it. It also responds to use Module::Metadata 1.0 (version numbering) correctly by calling Module::Metadata->VERSION.

By the way, thanks for mentioning interoperability. I should add in a field for operating systems.

=cut
--Brent Dax
There is no sig.

In reply to Re: Re: Module::Metadata by BrentDax
in thread Module::Metadata by BrentDax

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.