Package::DeprecationManager - Manage deprecation warnings for your distribution
version 0.18
package My::Class;
use Package::DeprecationManager -deprecations => {
'My::Class::foo' => '0.02',
'My::Class::bar' => '0.05',
'feature-X' => '0.07',
};
sub foo {
deprecated( 'Do not call foo!' );
...
}
sub bar {
deprecated();
...
}
sub baz {
my %args = @_;
if ( $args{foo} ) {
deprecated(
message => ...,
feature => 'feature-X',
);
}
}
package Other::Class;
use My::Class -api_version => '0.04';
My::Class->new()->foo(); # warns
My::Class->new()->bar(); # does not warn
My::Class->new()->bar(); # does not warn again
This module allows you to manage a set of deprecations for one or more modules.
When you import Package::DeprecationManager, you must provide a set of
-deprecations as a hash ref. The keys are "feature" names, and the values
are the version when that feature was deprecated.
In many cases, you can simply use the fully qualified name of a subroutine or method as the feature name. This works for cases where the whole subroutine is deprecated. However, the feature names can be any string. This is useful if you don't want to deprecate an entire subroutine, just a certain usage.
You can also provide an optional array reference in the -ignore parameter.
The values to be ignored can be package names or regular expressions (made with
qr//). Use this to ignore packages in your distribution that can appear on
the call stack when a deprecated feature is used.
As part of the import process, Package::DeprecationManager will export two
subroutines into its caller. It provides an import() sub for the caller and
a deprecated() sub.
The import() sub allows callers of your class to specify an
-api_version parameter. If this is supplied, then deprecation warnings are
only issued for deprecations with API versions earlier than the one specified.
You must call the deprecated() sub in each deprecated subroutine. When
called, it will issue a warning using Carp::cluck().
The deprecated() sub can be called in several ways. If you do not pass any
arguments, it will generate an appropriate warning message. If you pass a
single argument, this is used as the warning message.
Finally, you can call it with named arguments. Currently, the only allowed
names are message and feature. The feature argument should correspond
to the feature name passed in the -deprecations hash.
If you don't explicitly specify a feature, the deprecated() sub uses
caller() to identify its caller, using its fully qualified subroutine name.
A given deprecation warning is only issued once for a given package. This module tracks this based on both the feature name and the error message itself. This means that if you provide several different error messages for the same feature, all of those errors will appear.
This module works by installing an import sub in any package that uses it.
If that package already has an import sub, then that import will be
called after any arguments passed for Package::DeprecationManager are
stripped out. You need to define your import sub before you use Package::DeprecationManager to make this work:
package HasExporter;
use Exporter qw( import );
use Package::DeprecationManager -deprecations => {
'HasExporter::foo' => '0.02',
};
our @EXPORT_OK = qw( some_sub another_sub );
If you'd like to thank me for the work I've done on this module, please consider making a "donation" to me via PayPal. I spend a lot of free time creating free software, and would appreciate any support you'd care to offer.
Please note that I am not suggesting that you must do this in order for me to continue working on this particular software. I will continue to do so, inasmuch as I have in the past, for as long as it interests me.
Similarly, a donation made in this way will probably not make me work on this software much more, unless I get so many donations that I can consider working on free software full time, which seems unlikely at best.
To donate, log into PayPal and send money to autarch@urth.org or use the button on this page: http://www.urth.org/~autarch/fs-donation.html
The idea for this functionality and some of its implementation was originally created as Class::MOP::Deprecated by Goro Fuji.
Please report any bugs or feature requests to
bug-package-deprecationmanager@rt.cpan.org, or through the web interface at
http://rt.cpan.org. I will be notified, and then you'll automatically be
notified of progress on your bug as I make changes.
Bugs may be submitted at https://github.com/moose/Package-DeprecationManager/issues.
The source code repository for Package-DeprecationManager can be found at https://github.com/moose/Package-DeprecationManager.
If you'd like to thank me for the work I've done on this module, please consider making a "donation" to me via PayPal. I spend a lot of free time creating free software, and would appreciate any support you'd care to offer.
Please note that I am not suggesting that you must do this in order for me to continue working on this particular software. I will continue to do so, inasmuch as I have in the past, for as long as it interests me.
Similarly, a donation made in this way will probably not make me work on this software much more, unless I get so many donations that I can consider working on free software full time (let's all have a chuckle at that together).
To donate, log into PayPal and send money to autarch@urth.org, or use the button at https://houseabsolute.com/foss-donations/.
Dave Rolsky autarch@urth.org
- Aristotle Pagaltzis pagaltzis@gmx.de
- Jesse Luehrs doy@tozt.net
- Karen Etheridge ether@cpan.org
- Tomas Doran bobtfish@bobtfish.net
This software is Copyright (c) 2023 by Dave Rolsky.
This is free software, licensed under:
The Artistic License 2.0 (GPL Compatible)
The full text of the license can be found in the
LICENSE file included with this distribution.