The string is used in one place, inline it. It is passed as an argument and the life time will be extended around the call.
204 lines
8.0 KiB
C++
204 lines
8.0 KiB
C++
/* vim: set sw=4 sts=4 et foldmethod=syntax : */
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/*
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* Copyright (c) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2013 Ciaran McCreesh
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*
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* This file is part of the Paludis package manager. Paludis is free software;
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* you can redistribute it and/or modify it under the terms of the GNU General
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* Public License version 2, as published by the Free Software Foundation.
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*
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* Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <paludis/repositories/e/parse_dependency_label.hh>
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#include <paludis/repositories/e/dep_parser.hh>
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#include <paludis/repositories/e/eapi.hh>
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#include <paludis/util/log.hh>
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#include <paludis/util/tokeniser.hh>
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#include <paludis/util/singleton-impl.hh>
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#include <paludis/dep_label.hh>
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#include <paludis/choice.hh>
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#include <paludis/environment.hh>
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#include <paludis/package_id.hh>
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#include <paludis/metadata_key.hh>
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#include <paludis/always_enabled_dependency_label.hh>
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#include <paludis/repository.hh>
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#include <map>
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#include <set>
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using namespace paludis;
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using namespace paludis::erepository;
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namespace
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{
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bool enabled_if_option(
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const Environment * const env,
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const std::shared_ptr<const PackageID> & id,
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const std::string label,
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const ChoiceNameWithPrefix n)
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{
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auto repo(env->fetch_repository(id->repository_name()));
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if (repo->installed_root_key())
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return false;
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if (! id->choices_key())
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{
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Log::get_instance()->message("e.dep_parser.label_enabled.no_choices", ll_warning, lc_context)
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<< "ID " << *id << " has no choices, so cannot tell whether label '" << label << "' is enabled";
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return false;
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}
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const std::shared_ptr<const ChoiceValue> v(id->choices_key()->parse_value()->find_by_name_with_prefix(n));
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if (! v)
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{
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Log::get_instance()->message("e.dep_parser.label_enabled.no_choice", ll_warning, lc_context)
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<< "ID " << *id << " has no choice named '" << n << "', so cannot tell whether label '"
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<< label << "' is enabled";
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return false;
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}
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return v->enabled();
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}
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typedef std::tuple<std::string, std::string, std::string> DepLabelsIndex;
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struct EnabledByChoiceTestDependencyLabel :
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DependenciesTestLabel
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{
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std::string label_text;
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ChoiceNameWithPrefix choice_name;
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EnabledByChoiceTestDependencyLabel(const std::string & s, const ChoiceNameWithPrefix & p) :
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label_text(s),
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choice_name(p)
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{
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}
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bool enabled(const Environment * const env, const std::shared_ptr<const PackageID> & id) const override
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{
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return enabled_if_option(env, id, label_text, choice_name);
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}
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const std::string text() const override
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{
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return label_text;
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}
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};
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struct DepLabelsStore :
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Singleton<DepLabelsStore>
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{
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std::mutex mutex;
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std::map<DepLabelsIndex, std::shared_ptr<DependenciesLabel> > store;
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std::shared_ptr<DependenciesLabel> make(const std::string & class_name, const std::string & text)
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{
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if (class_name == "DependenciesBuildLabel")
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return std::make_shared<AlwaysEnabledDependencyLabel<DependenciesBuildLabelTag> >(text);
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else if (class_name == "DependenciesRunLabel")
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return std::make_shared<AlwaysEnabledDependencyLabel<DependenciesRunLabelTag> >(text);
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else if (class_name == "DependenciesPostLabel")
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return std::make_shared<AlwaysEnabledDependencyLabel<DependenciesPostLabelTag> >(text);
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else if (class_name == "DependenciesInstallLabel")
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return std::make_shared<AlwaysEnabledDependencyLabel<DependenciesInstallLabelTag> >(text);
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else if (class_name == "DependenciesCompileAgainstLabel")
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return std::make_shared<AlwaysEnabledDependencyLabel<DependenciesCompileAgainstLabelTag> >(text);
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else if (class_name == "DependenciesFetchLabel")
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return std::make_shared<AlwaysEnabledDependencyLabel<DependenciesFetchLabelTag> >(text);
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else if (class_name == "DependenciesSuggestionLabel")
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return std::make_shared<AlwaysEnabledDependencyLabel<DependenciesSuggestionLabelTag> >(text);
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else if (class_name == "DependenciesRecommendationLabel")
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return std::make_shared<AlwaysEnabledDependencyLabel<DependenciesRecommendationLabelTag> >(text);
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else if (class_name == "DependenciesTestLabel")
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return std::make_shared<AlwaysEnabledDependencyLabel<DependenciesTestLabelTag> >(text);
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else
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throw EDepParseError(text, "Label '" + text + "' maps to unknown class '" + class_name + "'");
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}
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std::shared_ptr<DependenciesLabel> make_test(const std::string & class_name,
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const ChoiceNameWithPrefix & c, const std::string & text)
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{
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if (class_name == "DependenciesTestLabel")
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return std::make_shared<EnabledByChoiceTestDependencyLabel>(text, c);
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else
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throw EDepParseError(text, "Label '" + text + "' maps to unknown test label class '" + class_name + "'");
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}
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std::shared_ptr<DependenciesLabel> get(const std::string & eapi_name, const std::string & class_name, const std::string & text)
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{
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std::unique_lock<std::mutex> lock(mutex);
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DepLabelsIndex x{eapi_name, class_name, text};
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auto i(store.find(x));
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if (i == store.end())
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i = store.insert(std::make_pair(x, make(class_name, text))).first;
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return i->second;
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}
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std::shared_ptr<DependenciesLabel> get_test(const std::string & eapi_name, const std::string & class_name,
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const ChoiceNameWithPrefix & choice_name, const std::string & text)
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{
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std::unique_lock<std::mutex> lock(mutex);
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DepLabelsIndex x{eapi_name, class_name, stringify(choice_name) + "/" + text};
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auto i(store.find(x));
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if (i == store.end())
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i = store.insert(std::make_pair(x, make_test(class_name, choice_name, text))).first;
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return i->second;
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}
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};
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}
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std::shared_ptr<DependenciesLabelsDepSpec>
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paludis::erepository::parse_dependency_label(const Environment * const,
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const std::string & s,
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const EAPI & e)
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{
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Context context("When parsing label string '" + s + "' using EAPI '" + e.name() + "':");
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if (s.empty())
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throw EDepParseError(s, "Empty label");
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std::set<std::string> labels;
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tokenise<delim_kind::AnyOfTag, delim_mode::DelimiterTag>(s.substr(0, s.length() - 1), "+", "", std::inserter(labels, labels.end()));
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std::shared_ptr<DependenciesLabelsDepSpec> l(std::make_shared<DependenciesLabelsDepSpec>());
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for (const auto & label : labels)
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{
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std::string c(e.supported()->dependency_labels()->class_for_label(label)), cc;
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if (c.empty())
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throw EDepParseError(s, "Unknown label '" + label + "'");
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std::string::size_type p(c.find('/'));
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if (std::string::npos != p)
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{
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cc = c.substr(p + 1);
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c.erase(p);
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}
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if (c == "DependenciesTestLabel")
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{
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if (cc.empty())
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l->add_label(DepLabelsStore::get_instance()->get(e.name(), c, label));
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else
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l->add_label(DepLabelsStore::get_instance()->get_test(e.name(), c, ChoiceNameWithPrefix(cc), label));
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}
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else
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l->add_label(DepLabelsStore::get_instance()->get(e.name(), c, label));
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}
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return l;
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}
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