Perl::Critic::Policy::ControlStructures::ProhibitUnreachableCode - Don't write code after an unconditional die, exit, or next.
die, exit, or next
This Policy is part of the core Perl::Critic distribution.
This policy prohibits code following a statement which unconditionally alters the program flow. This includes calls to exit, die, return, next, last and goto. Due to common usage, croak and confess from Carp are also included.
exit
die
return
next
last
goto
croak
confess
Code is reachable if any of the following conditions are true:
Flow-altering statement has a conditional attached to it
Statement is on the right side of an operator &&, ||, //, and, or, or err.
&&
||
//
and
or
err
Code is prefixed with a label (can potentially be reached via goto)
Code is a subroutine
# not ok exit; print "123\n"; # ok exit if !$xyz; print "123\n"; # not ok for ( 1 .. 10 ) { next; print 1; } # ok for ( 1 .. 10 ) { next if $_ == 5; print 1; } # not ok sub foo { my $bar = shift; return; print 1; } # ok sub foo { my $bar = shift; return if $bar->baz(); print 1; } # not ok die; print "123\n"; # ok die; LABEL: print "123\n"; # not ok croak; do_something(); # ok croak; sub do_something {}
This Policy is not configurable except for the standard options.
Perl::Critic::Policy::ControlStructures::ProhibitPostfixControls
Peter Guzis <pguzis@cpan.org>
Copyright (c) 2006-2011 Peter Guzis. All 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.
To install Perl::Critic, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Perl::Critic
CPAN shell
perl -MCPAN -e shell install Perl::Critic
For more information on module installation, please visit the detailed CPAN module installation guide.