Jeffrey Ryan Thalhammer > Perl-Critic-1.121 > Perl::Critic::Policy::ControlStructures::ProhibitLabelsWithSpecialBlockNames

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Module Version: 1.121   Source   Latest Release: Perl-Critic-1.121_01

NAME ^

Perl::Critic::Policy::ControlStructures::ProhibitLabelsWithSpecialBlockNames - Don't use labels that are the same as the special block names.

AFFILIATION ^

This Policy is part of the core Perl::Critic distribution.

DESCRIPTION ^

When using one of the special Perl blocks BEGIN, END, CHECK, INIT, and UNITCHECK, it is easy to mistakenly add a colon to the end of the block name. E.g.:

    # a BEGIN block that gets executed at compile time.
    BEGIN { <...code...> }

    # an ordinary labeled block that gets executed at run time.
    BEGIN: { <...code...> }

The labels "BEGIN:", "END:", etc. are probably errors. This policy prohibits the special Perl block names from being used as labels.

CONFIGURATION ^

This Policy is not configurable except for the standard options.

SEE ALSO ^

The Perl Buzz article on this issue at http://perlbuzz.com/2008/05/colons-invalidate-your-begin-and-end-blocks.html.

ACKNOWLEDGMENT ^

Randy Lauen for identifying the problem.

AUTHOR ^

Mike O'Regan

COPYRIGHT ^

Copyright (c) 2008-2011 Mike O'Regan. All rights reserved.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

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