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/* vim: set sw=4 sts=4 et foldmethod=syntax : */
/*
* Copyright (c) 2010, 2013 Ciaran McCreesh
*
* This file is part of the Paludis package manager. Paludis is free software;
* you can redistribute it and/or modify it under the terms of the GNU General
* Public License version 2, as published by the Free Software Foundation.
*
* Paludis 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, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <paludis/resolver/decision_utils.hh>
#include <paludis/resolver/decision.hh>
using namespace paludis;
using namespace paludis::resolver;
const std::shared_ptr<const PackageID>
paludis::resolver::get_decided_id_or_null(const std::shared_ptr<const Decision> & d)
{
return d->make_accept_returning(
[&] (const ChangesToMakeDecision & decision) { return decision.origin_id(); },
[&] (const BreakDecision & decision) { return decision.existing_id(); },
[&] (const ExistingNoChangeDecision & decision) { return decision.existing_id(); },
[&] (const NothingNoChangeDecision &) { return nullptr; },
[&] (const RemoveDecision &) { return nullptr; },
[&] (const UnableToMakeDecision &) { return nullptr; }
);
}
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