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[dh-make-perl] / dev / i386 / libperl-critic-perl / libperl-critic-perl-1.088 / lib / Perl / Critic / Policy / Variables / ProhibitConditionalDeclarations.pm

diff --git a/dev/i386/libperl-critic-perl/libperl-critic-perl-1.088/lib/Perl/Critic/Policy/Variables/ProhibitConditionalDeclarations.pm b/dev/i386/libperl-critic-perl/libperl-critic-perl-1.088/lib/Perl/Critic/Policy/Variables/ProhibitConditionalDeclarations.pm
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+++ b/dev/i386/libperl-critic-perl/libperl-critic-perl-1.088/lib/Perl/Critic/Policy/Variables/ProhibitConditionalDeclarations.pm
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+##############################################################################
+#      $URL: http://perlcritic.tigris.org/svn/perlcritic/trunk/Perl-Critic/lib/Perl/Critic/Policy/Variables/ProhibitConditionalDeclarations.pm $
+#     $Date: 2008-07-03 10:19:10 -0500 (Thu, 03 Jul 2008) $
+#   $Author: clonezone $
+# $Revision: 2489 $
+##############################################################################
+
+package Perl::Critic::Policy::Variables::ProhibitConditionalDeclarations;
+
+use 5.006001;
+use strict;
+use warnings;
+use Readonly;
+
+use Perl::Critic::Utils qw{ :severities :classification :data_conversion };
+use base 'Perl::Critic::Policy';
+
+our $VERSION = '1.088';
+
+#-----------------------------------------------------------------------------
+
+Readonly::Scalar my $DESC => q{Variable declared in conditional statement};
+Readonly::Scalar my $EXPL => q{Declare variables outside of the condition};
+
+#-----------------------------------------------------------------------------
+
+sub supported_parameters { return ()                         }
+sub default_severity     { return $SEVERITY_HIGHEST          }
+sub default_themes       { return qw( core bugs )            }
+sub applies_to           { return 'PPI::Statement::Variable' }
+
+#-----------------------------------------------------------------------------
+
+sub violates {
+    my ( $self, $elem, undef ) = @_;
+    return if $elem->type() eq 'local';
+
+    if ( $elem->find(\&_is_conditional) ) {
+        return $self->violation( $DESC, $EXPL, $elem );
+    }
+    return;    #ok!
+}
+
+my @conditionals = qw( if while foreach for until unless );
+my %conditionals = hashify( @conditionals );
+
+sub _is_conditional {
+    my (undef, $elem) = @_;
+
+    return if !$conditionals{$elem};
+    return if ! $elem->isa('PPI::Token::Word');
+    return if is_hash_key($elem);
+    return if is_method_call($elem);
+
+    return 1;
+}
+
+1;
+
+__END__
+
+#-----------------------------------------------------------------------------
+
+=pod
+
+=head1 NAME
+
+Perl::Critic::Policy::Variables::ProhibitConditionalDeclarations - Do not write C< my $foo = $bar if $baz; >.
+
+=head1 AFFILIATION
+
+This Policy is part of the core L<Perl::Critic> distribution.
+
+
+=head1 DESCRIPTION
+
+Declaring a variable with a postfix conditional is really confusing.
+If the conditional is false, its not clear if the variable will
+be false, undefined, undeclared, or what.  It's much more straightforward
+to make variable declarations separately.
+
+  my $foo = $baz if $bar;          #not ok
+  my $foo = $baz unless $bar;      #not ok
+  our $foo = $baz for @list;       #not ok
+  local $foo = $baz foreach @list; #not ok
+
+
+=head1 CONFIGURATION
+
+This Policy is not configurable except for the standard options.
+
+
+=head1 AUTHOR
+
+Jeffrey R. Thalhammer <thaljef@cpan.org>
+
+=head1 COPYRIGHT
+
+Copyright (c) 2006-2008 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.  The full text of this license
+can be found in the LICENSE file included with this module.
+
+=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 :