NAME
Perl::Critic::Policy::ControlStructures::ProhibitDeepNests - Don't write deeply nested loops and conditionals.
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
Deeply nested code is often hard to understand and may be a sign that it needs to be refactored. There are several good books on how to refactor code. I like Martin Fowler's "Refactoring: Improving The Design of Existing Code".
CONFIGURATION
The maximum number of nested control structures can be configured via a value for max_nests in a .perlcriticrc file. Each for-loop, if-else, while, and until block is counted as one nest. Postfix forms of these constructs are not counted. The default maximum is 5. Customization in a .perlcriticrc file looks like this:
[ControlStructures::ProhibitDeepNests]
max_nests = 3AUTHOR
Jeffrey Ryan Thalhammer <thaljef@cpan.org>
COPYRIGHT
Copyright (c) 2005-2008 Jeffrey Ryan Thalhammer. 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.