Perl::Critic::Policy::Perl::Critic::Policy::Subroutines::ProtectPrivateSubs(3)NAMEPerl::Critic::Policy::Subroutines::ProtectPrivateSubs - Prevent access
to private subs in other packages.
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
By convention Perl authors (like authors in many other languages)
indicate private methods and variables by inserting a leading
underscore before the identifier. This policy catches attempts to
access private variables from outside the package itself.
The subroutines in the POSIX package which begin with an underscore
(e.g. "POSIX::_POSIX_ARG_MAX") are not flagged as errors by this
policy.
CONFIGURATION
You can define what a private subroutine name looks like by specifying
a regular expression for the "private_name_regex" option in your
.perlcriticrc:
[Subroutines::ProtectPrivateSubs]
private_name_regex = _(?!_)\w+
The above example is a way of saying that subroutines that start with a
double underscore are not considered to be private. (Perl::Critic, in
its implementation, uses leading double underscores to indicate a
distribution-private subroutine-- one that is allowed to be invoked by
other Perl::Critic modules, but not by anything outside of
Perl::Critic.)
You can configure additional subroutines to accept by specifying them
in a space-delimited list to the "allow" option:
[Subroutines::ProtectPrivateSubs]
allow = FOO::_bar FOO::_baz
These are added to the default list of exemptions from this policy.
Allowing a subroutine also allows the corresponding method call. So
"FOO::_bar" in the above example allows both "FOO::_bar()" and
"FOO->_bar()".
HISTORY
This policy is inspired by a similar test in B::Lint.
BUGS
Doesn't forbid "$pkg->_foo()" because it can't tell the difference
between that and "$self->_foo()".
SEE ALSO
Perl::Critic::Policy::Variables::ProtectPrivateVars
AUTHOR
Chris Dolan <cdolan@cpan.org>
COPYRIGHT
Copyright (c) 2006-2011 Chris Dolan.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself. The full text of this license can
be found in the LICENSE file included with this module.
perl v5.14.1Perl::Critic::Policy::Subroutines::ProtectPrivateSubs(3)
