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author | 2010-08-07 09:11:34 +0100 | |
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committer | 2010-08-08 10:53:07 +0100 | |
commit | 1d8ee4cd7de4608dbbaa8ef207da80a6ca819b6a (patch) | |
tree | 865816dc6c3252b6c940d75d8e33d585133d9047 /paludis/resolver/get_constraints_for_purge_helper.cc | |
parent | fa61d33cd6b9892df41e1c32a97553bea4cde42e (diff) | |
download | paludis-1d8ee4cd7de4608dbbaa8ef207da80a6ca819b6a.tar.gz paludis-1d8ee4cd7de4608dbbaa8ef207da80a6ca819b6a.tar.xz |
GetConstraintsForPurgeHelper
Diffstat (limited to 'paludis/resolver/get_constraints_for_purge_helper.cc')
-rw-r--r-- | paludis/resolver/get_constraints_for_purge_helper.cc | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/paludis/resolver/get_constraints_for_purge_helper.cc b/paludis/resolver/get_constraints_for_purge_helper.cc new file mode 100644 index 000000000..507290a25 --- /dev/null +++ b/paludis/resolver/get_constraints_for_purge_helper.cc @@ -0,0 +1,98 @@ +/* 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>; + |