FM / Deps

/usr/share/perl5/Dpkg/Deps

Name	Size	Mode	Actions
AND.pm	4711	0644	edit dl rm
KnownFacts.pm	5772	0644	edit dl rm
Multiple.pm	5128	0644	edit dl rm
OR.pm	4329	0644	edit dl rm
Simple.pm	18383	0644	edit dl rm
Union.pm	2511	0644	edit dl rm

Edit: /usr/share/perl5/Dpkg/Deps/Union.pm (2511B)

# Copyright © 1998 Richard Braakman
# Copyright © 1999 Darren Benham
# Copyright © 2000 Sean 'Shaleh' Perry
# Copyright © 2004 Frank Lichtenheld
# Copyright © 2006 Russ Allbery
# Copyright © 2007-2009 Raphaël Hertzog <hertzog@debian.org>
# Copyright © 2008-2009, 2012-2014 Guillem Jover <guillem@debian.org>
#
# This program is free software; you may redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

package Dpkg::Deps::Union;

=encoding utf8

=head1 NAME

Dpkg::Deps::Union - list of unrelated dependencies

=head1 DESCRIPTION

This class represents a list of relationships.
It inherits from Dpkg::Deps::Multiple.

=cut

use strict;
use warnings;

our $VERSION = '1.00';

use parent qw(Dpkg::Deps::Multiple);

=head1 METHODS

=over 4

=item $dep->output([$fh])

The output method uses ", " to join the list of relationships.

=cut

sub output {
    my ($self, $fh) = @_;

my $res = join(', ', map {
        $_->output()
    } grep {
        not $_->is_empty()
    } $self->get_deps());

if (defined $fh) {
        print { $fh } $res;
    }
    return $res;
}

=item $dep->implies($other_dep)

=item $dep->get_evaluation($other_dep)

These methods are not meaningful for this object and always return undef.

=cut

sub implies {
    # Implication test is not useful on Union.
    return;
}

sub get_evaluation {
    # Evaluation is not useful on Union.
    return;
}

=item $dep->simplify_deps($facts)

The simplification is done to generate an union of all the relationships.
It uses $simple_dep->merge_union($other_dep) to get its job done.

=cut

sub simplify_deps {
    my ($self, $facts) = @_;
    my @new;

WHILELOOP:
    while (@{$self->{list}}) {
        my $odep = shift @{$self->{list}};
        foreach my $dep (@new) {
            next WHILELOOP if $dep->merge_union($odep);
        }
        push @new, $odep;
    }
    $self->{list} = [ @new ];
}

=back

=head1 CHANGES

=head2 Version 1.00 (dpkg 1.15.6)

Mark the module as public.

=cut

cmd: