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Diffstat (limited to 'src/plugins/autotest/itemdatacache.h')
-rw-r--r-- | src/plugins/autotest/itemdatacache.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/src/plugins/autotest/itemdatacache.h b/src/plugins/autotest/itemdatacache.h new file mode 100644 index 00000000000..ae5569075b6 --- /dev/null +++ b/src/plugins/autotest/itemdatacache.h @@ -0,0 +1,87 @@ +/**************************************************************************** +** +** Copyright (C) 2020 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of Qt Creator. +** +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3 as published by the Free Software +** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-3.0.html. +** +****************************************************************************/ + +#pragma once + +#include "testtreeitem.h" + +#include <utils/optional.h> + +#include <QVariantHash> + +namespace Autotest { +namespace Internal { + +template<class T> +class ItemDataCache +{ +public: + void insert(TestTreeItem *item, const T &value) { m_cache[item->cacheName()] = {0, value}; } + void evolve() + { + auto it = m_cache.begin(), end = m_cache.end(); + while (it != end) + it = it->generation++ >= maxGen ? m_cache.erase(it) : ++it; + } + + Utils::optional<T> get(TestTreeItem *item) + { + auto entry = m_cache.find(item->cacheName()); + if (entry == m_cache.end()) + return Utils::nullopt; + entry->generation = 0; + return Utils::make_optional(entry->value); + }; + + void clear() { m_cache.clear(); } + bool isEmpty() const { return m_cache.isEmpty(); } + + QVariantHash toSettings() const + { + QVariantHash result; + for (auto it = m_cache.cbegin(), end = m_cache.cend(); it != end; ++it) + result.insert(it.key(), QVariant::fromValue(it.value().value)); + return result; + } + + void fromSettings(const QVariantHash &stored) + { + m_cache.clear(); + for (auto it = stored.cbegin(), end = stored.cend(); it != end; ++it) + m_cache[it.key()] = {0, qvariant_cast<T>(it.value())}; + } + +private: + static constexpr int maxGen = 10; + struct Entry + { + int generation = 0; + T value; + }; + QHash<QString, Entry> m_cache; +}; + +} // namespace Internal +} // namespace Autotest |