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Diffstat (limited to 'lib/converters.h')
| -rw-r--r-- | lib/converters.h | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/lib/converters.h b/lib/converters.h new file mode 100644 index 00000000..bba298e0 --- /dev/null +++ b/lib/converters.h @@ -0,0 +1,177 @@ +/****************************************************************************** +* Copyright (C) 2017 Kitsune Ral <kitsune-ral@users.sf.net> +* +* This library is free software; you can redistribute it and/or +* modify it under the terms of the GNU Lesser General Public +* License as published by the Free Software Foundation; either +* version 2.1 of the License, or (at your option) any later version. +* +* This library 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 +* Lesser General Public License for more details. +* +* You should have received a copy of the GNU Lesser General Public +* License along with this library; if not, write to the Free Software +* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +*/ + +#pragma once + +#include <QtCore/QJsonObject> +#include <QtCore/QJsonArray> // Includes <QtCore/QJsonValue> +#include <QtCore/QDate> + +namespace QMatrixClient +{ + // This catches anything implicitly convertible to QJsonValue/Object/Array + inline QJsonValue toJson(const QJsonValue& val) { return val; } + inline QJsonObject toJson(const QJsonObject& o) { return o; } + inline QJsonArray toJson(const QJsonArray& arr) { return arr; } +#ifdef _MSC_VER // MSVC gets lost and doesn't know which overload to use + inline QJsonValue toJson(const QString& s) { return s; } +#endif + + template <typename T> + inline QJsonArray toJson(const QVector<T>& vals) + { + QJsonArray ar; + for (const auto& v: vals) + ar.push_back(toJson(v)); + return ar; + } + + inline QJsonArray toJson(const QStringList& strings) + { + return QJsonArray::fromStringList(strings); + } + + inline QJsonValue toJson(const QByteArray& bytes) + { + return QJsonValue(bytes.constData()); + } + + template <typename T> + inline QJsonObject toJson(const QHash<QString, T>& hashMap) + { + QJsonObject json; + for (auto it = hashMap.begin(); it != hashMap.end(); ++it) + json.insert(it.key(), toJson(it.value())); + return json; + } + + template <typename T> + struct FromJson + { + T operator()(const QJsonValue& jv) const { return static_cast<T>(jv); } + }; + + template <typename T> + inline T fromJson(const QJsonValue& jv) + { + return FromJson<T>()(jv); + } + + template <> struct FromJson<bool> + { + bool operator()(const QJsonValue& jv) const { return jv.toBool(); } + }; + + template <> struct FromJson<int> + { + int operator()(const QJsonValue& jv) const { return jv.toInt(); } + }; + + template <> struct FromJson<double> + { + double operator()(const QJsonValue& jv) const { return jv.toDouble(); } + }; + + template <> struct FromJson<qint64> + { + qint64 operator()(const QJsonValue& jv) const { return qint64(jv.toDouble()); } + }; + + template <> struct FromJson<QString> + { + QString operator()(const QJsonValue& jv) const { return jv.toString(); } + }; + + template <> struct FromJson<QDateTime> + { + QDateTime operator()(const QJsonValue& jv) const + { + return QDateTime::fromMSecsSinceEpoch(fromJson<qint64>(jv), Qt::UTC); + } + }; + + template <> struct FromJson<QDate> + { + QDate operator()(const QJsonValue& jv) const + { + return fromJson<QDateTime>(jv).date(); + } + }; + + template <> struct FromJson<QJsonObject> + { + QJsonObject operator()(const QJsonValue& jv) const + { + return jv.toObject(); + } + }; + + template <> struct FromJson<QJsonArray> + { + QJsonArray operator()(const QJsonValue& jv) const + { + return jv.toArray(); + } + }; + + template <typename T> struct FromJson<QVector<T>> + { + QVector<T> operator()(const QJsonValue& jv) const + { + const auto jsonArray = jv.toArray(); + QVector<T> vect; vect.resize(jsonArray.size()); + std::transform(jsonArray.begin(), jsonArray.end(), + vect.begin(), FromJson<T>()); + return vect; + } + }; + + template <typename T> struct FromJson<QList<T>> + { + QList<T> operator()(const QJsonValue& jv) const + { + const auto jsonArray = jv.toArray(); + QList<T> sl; sl.reserve(jsonArray.size()); + std::transform(jsonArray.begin(), jsonArray.end(), + std::back_inserter(sl), FromJson<T>()); + return sl; + } + }; + + template <> struct FromJson<QStringList> : FromJson<QList<QString>> { }; + + template <> struct FromJson<QByteArray> + { + inline QByteArray operator()(const QJsonValue& jv) const + { + return fromJson<QString>(jv).toLatin1(); + } + }; + + template <typename T> struct FromJson<QHash<QString, T>> + { + QHash<QString, T> operator()(const QJsonValue& jv) const + { + const auto json = jv.toObject(); + QHash<QString, T> h; h.reserve(json.size()); + for (auto it = json.begin(); it != json.end(); ++it) + h.insert(it.key(), fromJson<T>(it.value())); + return h; + } + }; +} // namespace QMatrixClient |