Perl::Critic::Policy::InputOutput::RequireCheckedSyscalls - Return value of flagged function ignored.
This Policy is part of the core Perl::Critic distribution.
This performs identically to InputOutput::RequireCheckedOpen/Close except that this is configurable to apply to any function, whether core or user-defined.
If your module uses Fatal or Fatal::Exception, then any
functions wrapped by those modules will not trigger this policy. For
example:
use Fatal qw(open); open my $fh, $filename; # no violation close $fh; # yes violation
This policy watches for a configurable list of function names. By
default, it applies to open, print and close. You can
override this to set it to a different list of functions with the
functions setting. To do this, put entries in a .perlcriticrc
file like this:
[InputOutput::RequireCheckedSyscalls] functions = open opendir read readline readdir close closedir
We have defined a few shortcuts for creating this list
[InputOutput::RequireCheckedSyscalls] functions = :defaults opendir readdir closedir [InputOutput::RequireCheckedSyscalls] functions = :builtins [InputOutput::RequireCheckedSyscalls] functions = :all
The :builtins shortcut above represents all of the builtin
functions that have error conditions (about 65 of them, many of them
rather obscure).
The :all is the insane case: you must check the return value of
EVERY function call, even return and exit. Yes, this "feature"
is overkill and is wasting CPU cycles on your computer by just
existing. Nyah nyah. I shouldn't code after midnight.
Initial development of this policy was supported by a grant from the Perl Foundation.
This policy module is based heavily on policies written by Andrew Moore <amoore@mooresystems.com>.
Chris Dolan <cdolan@cpan.org>
Copyright (c) 2007-2008 Chris Dolan. Many rights reserved.
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.