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authorAvatar Ciaran McCreesh <ciaran.mccreesh@googlemail.com> 2010-08-07 09:11:34 +0100
committerAvatar Ciaran McCreesh <ciaran.mccreesh@googlemail.com> 2010-08-08 10:53:07 +0100
commit1d8ee4cd7de4608dbbaa8ef207da80a6ca819b6a (patch)
tree865816dc6c3252b6c940d75d8e33d585133d9047 /paludis/resolver/get_constraints_for_purge_helper.cc
parentfa61d33cd6b9892df41e1c32a97553bea4cde42e (diff)
downloadpaludis-1d8ee4cd7de4608dbbaa8ef207da80a6ca819b6a.tar.gz
paludis-1d8ee4cd7de4608dbbaa8ef207da80a6ca819b6a.tar.xz
GetConstraintsForPurgeHelper
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diff --git a/paludis/resolver/get_constraints_for_purge_helper.cc b/paludis/resolver/get_constraints_for_purge_helper.cc
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+/* vim: set sw=4 sts=4 et foldmethod=syntax : */
+
+/*
+ * Copyright (c) 2010 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/get_constraints_for_purge_helper.hh>
+#include <paludis/resolver/reason.hh>
+#include <paludis/resolver/constraint.hh>
+#include <paludis/resolver/resolvent.hh>
+#include <paludis/resolver/resolution.hh>
+#include <paludis/resolver/decision.hh>
+#include <paludis/util/pimp-impl.hh>
+#include <paludis/util/simple_visitor_cast.hh>
+#include <paludis/util/make_shared_copy.hh>
+#include <paludis/util/make_named_values.hh>
+#include <paludis/util/stringify.hh>
+#include <paludis/dep_spec.hh>
+#include <paludis/package_id.hh>
+#include <paludis/package_dep_spec_collection.hh>
+#include <paludis/partially_made_package_dep_spec.hh>
+#include <paludis/elike_slot_requirement.hh>
+#include <paludis/metadata_key.hh>
+
+using namespace paludis;
+using namespace paludis::resolver;
+
+namespace paludis
+{
+ template <>
+ struct Imp<GetConstraintsForPurgeHelper>
+ {
+ const Environment * const env;
+ PackageDepSpecCollection purge_specs;
+
+ Imp(const Environment * const e) :
+ env(e)
+ {
+ }
+ };
+}
+
+GetConstraintsForPurgeHelper::GetConstraintsForPurgeHelper(const Environment * const e) :
+ Pimp<GetConstraintsForPurgeHelper>(e)
+{
+}
+
+GetConstraintsForPurgeHelper::~GetConstraintsForPurgeHelper() = default;
+
+void
+GetConstraintsForPurgeHelper::add_purge_spec(const PackageDepSpec & spec)
+{
+ _imp->purge_specs.insert(spec);
+}
+
+const std::shared_ptr<ConstraintSequence>
+GetConstraintsForPurgeHelper::operator() (
+ const std::shared_ptr<const Resolution> &,
+ const std::shared_ptr<const PackageID> & id,
+ const std::shared_ptr<const ChangeByResolventSequence> & was_used_by_ids) const
+{
+ const std::shared_ptr<ConstraintSequence> result(std::make_shared<ConstraintSequence>());
+
+ PartiallyMadePackageDepSpec partial_spec({ });
+ partial_spec.package(id->name());
+ if (id->slot_key())
+ partial_spec.slot_requirement(std::make_shared<ELikeSlotExactRequirement>(id->slot_key()->value(), false));
+ PackageDepSpec spec(partial_spec);
+
+ const std::shared_ptr<WasUsedByReason> reason(std::make_shared<WasUsedByReason>(was_used_by_ids));
+
+ result->push_back(std::make_shared<Constraint>(make_named_values<Constraint>(
+ n::destination_type() = dt_install_to_slash,
+ n::nothing_is_fine_too() = true,
+ n::reason() = reason,
+ n::spec() = BlockDepSpec("!" + stringify(spec), spec, false),
+ n::untaken() = ! _imp->purge_specs.match_any(_imp->env, id, { }),
+ n::use_existing() = ue_if_possible
+ )));
+
+ return result;
+}
+
+template class Pimp<GetConstraintsForPurgeHelper>;
+