/usr/share/perl5/Test2/Compare/Negatable.pm is in libtest2-suite-perl 0.000063-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | package Test2::Compare::Negatable;
use strict;
use warnings;
our $VERSION = '0.000063';
require overload;
require Test2::Util::HashBase;
sub import {
my ($pkg, $file, $line) = caller;
my $sub = eval <<" EOT" or die $@;
package $pkg;
#line $line "$file"
sub { overload->import('!' => 'clone_negate', fallback => 1); Test2::Util::HashBase->import('negate')}
EOT
$sub->();
no strict 'refs';
*{"$pkg\::clone_negate"} = \&clone_negate;
*{"$pkg\::toggle_negate"} = \&toggle_negate;
}
sub clone_negate {
my $self = shift;
my $clone = $self->clone;
$clone->toggle_negate;
return $clone;
}
sub toggle_negate {
my $self = shift;
$self->set_negate($self->negate ? 0 : 1);
}
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Test2::Compare::Negatable - Poor mans 'role' for compare objects that can be negated.
=head1 DESCRIPTION
Using this package inside an L<Test2::Compare::Base> subclass will overload
C<!$obj> and import C<clone_negate()> and C<toggle_negate()>.
=head1 WHY?
Until perl 5.18 the 'fallback' parameter to L<overload> would not be inherited,
so we cannot use inheritance for the behavior we actually want. This module
works around the problem by emulating the C<use overload> call we want for each
consumer class.
=head1 ATTRIBUTES
=over 4
=item $bool = $obj->negate
=item $obj->set_negate($bool)
=item $attr = NEGATE()
The NEGATE attribute will be added via L<Test2::Util::HashBase>.
=back
=head1 METHODS
=over 4
=item $clone = $obj->clone_negate()
Create a shallow copy of the object, and call C<toggle_negate> on it.
=item $obj->toggle_negate()
Toggle the negate attribute. If the attribute was on it will now be off, if it
was off it will now be on.
=back
=head1 SOURCE
The source code repository for Test2-Suite can be found at
F<http://github.com/Test-More/Test2-Suite/>.
=head1 MAINTAINERS
=over 4
=item Chad Granum E<lt>exodist@cpan.orgE<gt>
=back
=head1 AUTHORS
=over 4
=item Chad Granum E<lt>exodist@cpan.orgE<gt>
=back
=head1 COPYRIGHT
Copyright 2016 Chad Granum E<lt>exodist@cpan.orgE<gt>.
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
See F<http://dev.perl.org/licenses/>
=cut
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