Perl::Critic::Theme - Construct thematic sets of policies


Perl::Critic::Theme - Construct thematic sets of policies


This is a helper class for evaluating theme expressions into sets of Policy objects. There are no user-serviceable parts here.


new( -rule => $rule_expression )
Returns a reference to a new Perl::Critic::Theme object. -rule is a string expression that evaluates to true or false for each Policy.. See THEME RULES for more information.

policy_is_thematic( -policy => $policy )
Given a reference to a the Perl::Critic::Policy manpage object, this method returns evaluates the rule against the themes that are associated with the Policy. Returns 1 if the Policy satisfies the rule, 0 otherwise.

Returns the rule expression that was used to construct this Theme. The rule may have been translated into a normalized expression. See THEME RULES for more information.


A theme rule is a simple boolean expression, where the operands are the names of any of the themes associated with the Perl::Critic::Polices.

Theme names can be combined with logical operators to form arbitrarily complex expressions. Precedence is the same as normal mathematics, but you can use parens to enforce precedence as well. Supported operators are:

   Operator    Altertative    Example
   &&          and            'pbp && core'
   ||          or             'pbp || (bugs && security)'
   !           not            'pbp && ! (portability || complexity)

See CONFIGURATION in the Perl::Critic manpage for more information about customizing the themes for each Policy.


cook_rule( $rule )
Standardize a rule into a almost executable Perl code. The ``almost'' comes from the fact that theme names are left as is.


A regular expression that will return the first character in the matched expression that is not valid in a rule.


Jeffrey Thalhammer <>


Copyright (c) 2006 Jeffrey Thalhammer

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::Critic::Theme - Construct thematic sets of policies