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ELLIOTJS / Perl-Critic-1.083_005 / lib / Perl / Critic / Policy / ClassHierarchies / ProhibitExplicitISA.pm 

            

              
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##############################################################################
#      $URL: http://perlcritic.tigris.org/svn/perlcritic/trunk/Perl-Critic/lib/Perl/Critic/Policy/ClassHierarchies/ProhibitExplicitISA.pm $
#     $Date: 2008-05-19 23:39:19 -0500 (Mon, 19 May 2008) $
#   $Author: clonezone $
# $Revision: 2387 $
##############################################################################
package Perl::Critic::Policy::ClassHierarchies::ProhibitExplicitISA;
use strict;
use warnings;
use Readonly;
use Perl::Critic::Utils qw{ :severities };
use base 'Perl::Critic::Policy';
our $VERSION = '1.083_005';
#-----------------------------------------------------------------------------
Readonly::Scalar my $DESC => q{@ISA used instead of "use base"}; ##no critic; #for @ in string
Readonly::Scalar my $EXPL => [ 360 ];
#-----------------------------------------------------------------------------
sub supported_parameters { return ()                         }
sub default_severity     { return $SEVERITY_MEDIUM           }
sub default_themes       { return qw( core maintenance pbp ) }
sub applies_to           { return 'PPI::Token::Symbol'       }
#-----------------------------------------------------------------------------
sub violates {
    my ($self, $elem, undef) = @_;
    if( $elem eq q{@ISA} ) {  ##no critic; #for @ in string
        return $self->violation( $DESC, $EXPL, $elem );
    }
    return; #ok!
}
1;
#-----------------------------------------------------------------------------
__END__
=pod
=head1 NAME
Perl::Critic::Policy::ClassHierarchies::ProhibitExplicitISA - Employ C<use base> instead of C<@ISA>.
=head1 AFFILIATION
This Policy is part of the core L<Perl::Critic> distribution.
=head1 DESCRIPTION
Conway recommends employing C<use base qw(Foo)> instead of the usual
C<our @ISA = qw(Foo)> because the former happens at compile time and
the latter at runtime.  The C<base> pragma also automatically loads
C<Foo> for you so you save a line of easily-forgotten code.
=head1 CONFIGURATION
This Policy is not configurable except for the standard options.
=head1 AUTHOR
Chris Dolan <cdolan@cpan.org>
=head1 COPYRIGHT
Copyright (C) 2006 Chris Dolan.  All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
# Local Variables:
#   mode: cperl
#   cperl-indent-level: 4
#   fill-column: 78
#   indent-tabs-mode: nil
#   c-indentation-style: bsd
# End:
# ex: set ts=8 sts=4 sw=4 tw=78 ft=perl expandtab shiftround :