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package Perl::Critic::Policy::ClassHierarchies::ProhibitExplicitISA; |
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3
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40
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40
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26225
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use 5.010001; |
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40
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196
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4
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40
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40
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277
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use strict; |
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182
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40
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916
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5
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266
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use warnings; |
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144
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40
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942
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6
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40
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250
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use Readonly; |
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144
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40
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2129
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7
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8
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40
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40
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use Perl::Critic::Utils qw{ :severities }; |
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151
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40
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1922
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40
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40
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5140
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use parent 'Perl::Critic::Policy'; |
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150
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276
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our $VERSION = '1.150'; |
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#----------------------------------------------------------------------------- |
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15
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Readonly::Scalar my $DESC => q{@ISA used instead of "use parent"}; ## no critic (RequireInterpolation) |
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Readonly::Scalar my $EXPL => [ 360 ]; |
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18
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#----------------------------------------------------------------------------- |
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89
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89
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0
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1666
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sub supported_parameters { return () } |
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74
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74
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1
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310
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sub default_severity { return $SEVERITY_MEDIUM } |
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86
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86
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1
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401
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sub default_themes { return qw( core maintenance pbp certrec ) } |
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30
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1
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91
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sub applies_to { return 'PPI::Token::Symbol' } |
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25
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#----------------------------------------------------------------------------- |
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sub violates { |
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172
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172
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1
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378
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my ($self, $elem, undef) = @_; |
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30
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172
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50
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317
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if( $elem eq q{@ISA} ) { ## no critic (RequireInterpolation) |
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0
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0
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return $self->violation( $DESC, $EXPL, $elem ); |
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} |
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172
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1839
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return; #ok! |
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} |
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36
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1; |
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38
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#----------------------------------------------------------------------------- |
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40
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__END__ |
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42
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=pod |
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44
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=head1 NAME |
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46
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Perl::Critic::Policy::ClassHierarchies::ProhibitExplicitISA - Employ C<use parent> instead of C<@ISA>. |
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48
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49
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=head1 AFFILIATION |
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51
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This Policy is part of the core L<Perl::Critic|Perl::Critic> |
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distribution. |
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54
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55
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=head1 DESCRIPTION |
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57
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Conway recommends employing C<use parent qw(Foo)> instead of the usual |
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C<our @ISA = qw(Foo)> because the former happens at compile time and |
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the latter at runtime. The L<parent|parent> pragma also automatically loads |
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C<Foo> for you so you save a line of easily-forgotten code. |
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62
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The original version of this policy recommended L<base|base> instead of |
63
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L<parent|parent>, which is now obsolete. |
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65
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=head1 CONFIGURATION |
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67
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This Policy is not configurable except for the standard options. |
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69
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70
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=head1 AUTHOR |
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72
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Chris Dolan <cdolan@cpan.org> |
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74
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75
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=head1 COPYRIGHT |
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77
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Copyright (c) 2006-2022 Chris Dolan. |
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79
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This program is free software; you can redistribute it and/or modify |
80
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it under the same terms as Perl itself. |
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82
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=cut |
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84
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# Local Variables: |
85
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# mode: cperl |
86
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# cperl-indent-level: 4 |
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# fill-column: 78 |
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# indent-tabs-mode: nil |
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# c-indentation-style: bsd |
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# End: |
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# ex: set ts=8 sts=4 sw=4 tw=78 ft=perl expandtab shiftround : |