Method performUpdateActions

launcher/minecraft/ComponentUpdateTask.cpp:547–658

overload(Ts...) -> overload<Ts...>;

void ComponentUpdateTask::performUpdateActions()
{
    auto& instance = d->m_profile->d->m_instance;
    bool addedActions;
    QStringList toRemove;
    do {
        addedActions = false;
        toRemove.clear();
        auto& components = d->m_profile->d->components;
        auto& componentIndex = d->m_profile->d->componentIndex;
        for (auto component : components) {
            if (!component) {
                continue;
            }
            auto action = component->getUpdateAction();
            auto visitor =
                overload{ [](const UpdateActionNone&) {
                             // noop
                         },
                          [&component, &instance](const UpdateActionChangeVersion& cv) {
                              qCDebug(instanceProfileResolveC) << instance->name() << "|"
                                                               << "UpdateActionChangeVersion" << component->getID() << ":"
                                                               << component->getVersion() << "change to" << cv.targetVersion;
                              component->setVersion(cv.targetVersion);
                              component->waitLoadMeta();
                          },
                          [&component, &instance](const UpdateActionLatestRecommendedCompatible lrc) {
                              qCDebug(instanceProfileResolveC)
                                  << instance->name() << "|"
                                  << "UpdateActionLatestRecommendedCompatible" << component->getID() << ":" << component->getVersion()
                                  << "updating to latest recommend or compatible with" << lrc.parentUid << lrc.version;
                              auto versionList = APPLICATION->metadataIndex()->get(component->getID());
                              if (versionList) {
                                  versionList->waitToLoad();
                                  auto recommended = versionList->getRecommendedForParent(lrc.parentUid, lrc.version);
                                  if (!recommended) {
                                      recommended = versionList->getLatestForParent(lrc.parentUid, lrc.version);
                                  }
                                  if (recommended) {
                                      component->setVersion(recommended->version());
                                      component->waitLoadMeta();
                                      return;
                                  } else {
                                      component->addComponentProblem(ProblemSeverity::Error,
                                                                     QObject::tr("No compatible version of %1 found for %2 %3")
                                                                         .arg(component->getName(), lrc.parentName, lrc.version));
                                  }
                              } else {
                                  component->addComponentProblem(
                                      ProblemSeverity::Error,
                                      QObject::tr("No version list in metadata index for %1").arg(component->getID()));
                              }
                          },
                          [&component, &instance, &toRemove](const UpdateActionRemove&) {
                              qCDebug(instanceProfileResolveC)
                                  << instance->name() << "|"
                                  << "UpdateActionRemove" << component->getID() << ":" << component->getVersion() << "removing";
                              toRemove.append(component->getID());