forked from qt-creator/qt-creator
a7956df3ca
Replace the current license disclaimer in files by a SPDX-License-Identifier. Task-number: QTBUG-67283 Change-Id: I708fd1f9f2b73d60f57cc3568646929117825813 Reviewed-by: Eike Ziller <eike.ziller@qt.io>
94 lines
2.1 KiB
C++
94 lines
2.1 KiB
C++
// Copyright (C) 2020 Alexis Jeandet.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
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#pragma once
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#include <utils/optional.h>
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#include <QFile>
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#include <QJsonArray>
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#include <QJsonDocument>
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#include <QJsonObject>
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#include <QJsonValue>
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namespace MesonProjectManager {
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namespace Internal {
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template<typename T>
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inline T load(QJsonDocument &&doc);
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template<>
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inline QJsonArray load<QJsonArray>(QJsonDocument &&doc)
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{
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return doc.array();
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}
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template<>
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inline QJsonObject load<QJsonObject>(QJsonDocument &&doc)
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{
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return doc.object();
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}
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template<typename T>
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inline T load(const QJsonValueRef &ref);
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template<>
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inline QJsonArray load<QJsonArray>(const QJsonValueRef &ref)
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{
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return ref.toArray();
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}
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template<>
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inline QJsonObject load<QJsonObject>(const QJsonValueRef &ref)
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{
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return ref.toObject();
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}
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template<typename T>
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inline Utils::optional<T> load(const QString &jsonFile)
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{
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QFile js(jsonFile);
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js.open(QIODevice::ReadOnly | QIODevice::Text);
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if (js.isOpen()) {
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auto data = js.readAll();
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return load<T>(QJsonDocument::fromJson(data));
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}
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return Utils::nullopt;
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}
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template<typename T>
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inline Utils::optional<T> get(const QJsonObject &obj, const QString &name);
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template<>
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inline Utils::optional<QJsonArray> get<QJsonArray>(const QJsonObject &obj, const QString &name)
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{
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if (obj.contains(name)) {
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auto child = obj[name];
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if (child.isArray())
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return child.toArray();
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}
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return Utils::nullopt;
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}
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template<>
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inline Utils::optional<QJsonObject> get<QJsonObject>(const QJsonObject &obj, const QString &name)
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{
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if (obj.contains(name)) {
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auto child = obj[name];
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if (child.isObject())
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return child.toObject();
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}
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return Utils::nullopt;
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}
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template<typename T, typename... Strings>
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inline Utils::optional<T> get(const QJsonObject &obj, const QString &firstPath, const Strings &...path)
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{
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if (obj.contains(firstPath))
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return get<T>(obj[firstPath].toObject(), path...);
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return Utils::nullopt;
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}
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} // namespace Internal
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} // namespace MesonProjectManager
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