NAME

Devel::Deanonymize - A small tool to make anonymous sub visible

DESCRIPTION

When collecting Coverage statistics with Devel::Cover a construct like below appear to be invisible and is simply ignored by the statistic:

    my $sub = sub {
        print "hello";
    }

This script aims to solve this problem by wrapping each file in a sub and thus making these subs visible. Code is based on https://github.com/pjcj/Devel--Cover/issues/51#issuecomment-17222928

SYNOPSIS

    # Perl scripts
    perl -MDevel::Cover=-ignore,^t/,Deanonymize -MDevel::Deanonymize=<inculde_pattern> your_script.pl

    # Perl tests
    HARNESS_PERL_SWITCHES="-MDevel::Cover=-ignore,^t/,Deanonymize -MDevel::Deanonymize=<include_pattern>"  prove t/

DEBUGGING

If your tests suddenly fail for some weird reason, you can set DEANONYMIZE_DEBUG. If this environment variable is set, we print out the filename for every modified file write its contents to filepath/filename_mod.pl.

It is also important to note that the regex which matches the end-marker is not perfect. In general it can be summarized as follows:

We start at the end of a file and search for the first occurrence of either __END__, __DATA__ or 1;. To improve robustness, these markers must occur alone on their respective line. A special case is 1 without semicolon: We only consider this case if its the very last character of a file.

Files with no endmarkers at all are dangerous to use in conjunction with this module...

EXAMPLES

Please referer to the files provided in the examples/ directory

AUTHORS

Since there is a lot of spam flooding my mailbox, I had to put spam filtering in place. If you want to make sure that your email gets delivered into my mailbox, include #im_not_a_bot# in the subject!

Tobias Bossert <tobib at cpan.org>

COPYRIGHT AND LICENSE

MIT License

Copyright (c) 2021 Tobias Bossert, OETIKER+PARTNER AG Switzerland

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.