Perl::Critic::Policy::ValuesAndExpressions::ProhibitConstantPragma - Don't C<< use constant FOO => 15 >>.

Perl-Critic documentation Contained in the Perl-Critic distribution.

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NAME

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Perl::Critic::Policy::ValuesAndExpressions::ProhibitConstantPragma - Don't use constant FOO => 15.

AFFILIATION

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

DESCRIPTION

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Named constants are a good thing. But don't use the constant pragma because barewords don't interpolate. Instead use the Readonly module.

  use constant FOOBAR => 42;  #not ok

  use Readonly;
  Readonly my $FOOBAR => 42;  #ok
  Readonly::Scalar my $FOOBAR => 42;  #ok

CONFIGURATION

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This Policy is not configurable except for the standard options.

AUTHOR

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Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>

COPYRIGHT

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Copyright (c) 2005-2011 Imaginative Software Systems. 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.

Perl-Critic documentation Contained in the Perl-Critic distribution. 
##############################################################################
#      $URL: http://perlcritic.tigris.org/svn/perlcritic/trunk/distributions/Perl-Critic/lib/Perl/Critic/Policy/ValuesAndExpressions/ProhibitConstantPragma.pm $
#     $Date: 2011-05-15 16:34:46 -0500 (Sun, 15 May 2011) $
#   $Author: clonezone $
# $Revision: 4078 $
##############################################################################

package Perl::Critic::Policy::ValuesAndExpressions::ProhibitConstantPragma;

use 5.006001;
use strict;
use warnings;
use Readonly;

use Perl::Critic::Utils qw{ :severities };
use base 'Perl::Critic::Policy';

our $VERSION = '1.116';

#-----------------------------------------------------------------------------

Readonly::Scalar my $DESC => q{Pragma "constant" used};
Readonly::Scalar my $EXPL => [ 55 ];

#-----------------------------------------------------------------------------

sub supported_parameters { return ()                        }
sub default_severity     { return $SEVERITY_HIGH            }
sub default_themes       { return qw( core bugs pbp )       }
sub applies_to           { return 'PPI::Statement::Include' }

#-----------------------------------------------------------------------------

sub violates {
    my ( $self, $elem, undef ) = @_;
    if ( $elem->type() eq 'use' && $elem->pragma() eq 'constant' ) {
        return $self->violation( $DESC, $EXPL, $elem );
    }
    return;    #ok!
}

1;

__END__

#-----------------------------------------------------------------------------


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