From 0e84e3866c57cb575b0577694da4d27918c02c11 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C4=99drzej=20Nowacki?= <jedrzej.nowacki@qt.io>
Date: Mon, 3 Sep 2018 17:16:19 +0200
Subject: Implement QJsonValue data stream operator

Change-Id: I9cff40828ab68b4e2474da506b2da2cfed479f2c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Luca Beldi <v.ronin@yahoo.it>
---
 src/corelib/serialization/qjsonvalue.cpp | 75 ++++++++++++++++++++++++++++++++
 src/corelib/serialization/qjsonvalue.h   |  6 +++
 2 files changed, 81 insertions(+)

(limited to 'src/corelib/serialization')

diff --git a/src/corelib/serialization/qjsonvalue.cpp b/src/corelib/serialization/qjsonvalue.cpp
index 2c04da4885..1fc610d7c7 100644
--- a/src/corelib/serialization/qjsonvalue.cpp
+++ b/src/corelib/serialization/qjsonvalue.cpp
@@ -45,6 +45,7 @@
 #include <qvariant.h>
 #include <qstringlist.h>
 #include <qdebug.h>
+#include "qdatastream.h"
 
 #ifndef QT_BOOTSTRAPPED
 #  include <qcborarray.h>
@@ -933,4 +934,78 @@ QDebug operator<<(QDebug dbg, const QJsonValue &o)
 }
 #endif
 
+#ifndef QT_NO_DATASTREAM
+QDataStream &operator<<(QDataStream &stream, const QJsonValue &v)
+{
+    quint8 type = v.t;
+    stream << type;
+    switch (type) {
+    case QJsonValue::Undefined:
+    case QJsonValue::Null:
+        break;
+    case QJsonValue::Bool:
+        stream << v.toBool();
+        break;
+    case QJsonValue::Double:
+        stream << v.toDouble();
+        break;
+    case QJsonValue::String:
+        stream << v.toString();
+        break;
+    case QJsonValue::Array:
+        stream << v.toArray();
+        break;
+    case QJsonValue::Object:
+        stream << v.toObject();
+        break;
+    }
+    return stream;
+}
+
+QDataStream &operator>>(QDataStream &stream, QJsonValue &v)
+{
+    quint8 type;
+    stream >> type;
+    switch (type) {
+    case QJsonValue::Undefined:
+    case QJsonValue::Null:
+        v = QJsonValue{QJsonValue::Type(type)};
+        break;
+    case QJsonValue::Bool: {
+        bool b;
+        stream >> b;
+        v = QJsonValue(b);
+        break;
+    } case QJsonValue::Double: {
+        double d;
+        stream >> d;
+        v = QJsonValue{d};
+        break;
+    } case QJsonValue::String: {
+        QString s;
+        stream >> s;
+        v = QJsonValue{s};
+        break;
+    }
+    case QJsonValue::Array: {
+        QJsonArray a;
+        stream >> a;
+        v = QJsonValue{a};
+        break;
+    }
+    case QJsonValue::Object: {
+        QJsonObject o;
+        stream >> o;
+        v = QJsonValue{o};
+        break;
+    }
+    default: {
+        stream.setStatus(QDataStream::ReadCorruptData);
+        v = QJsonValue{QJsonValue::Undefined};
+    }
+    }
+    return stream;
+}
+#endif
+
 QT_END_NAMESPACE
diff --git a/src/corelib/serialization/qjsonvalue.h b/src/corelib/serialization/qjsonvalue.h
index d8e121524d..16d2c0c14c 100644
--- a/src/corelib/serialization/qjsonvalue.h
+++ b/src/corelib/serialization/qjsonvalue.h
@@ -152,6 +152,7 @@ private:
     friend class QJsonObject;
     friend class QCborValue;
     friend Q_CORE_EXPORT QDebug operator<<(QDebug, const QJsonValue &);
+    friend Q_CORE_EXPORT QDataStream &operator<<(QDataStream &, const QJsonValue &);
 
     QJsonValue(QJsonPrivate::Data *d, QJsonPrivate::Base *b, const QJsonPrivate::Value& v);
     void stringDataFromQStringHelper(const QString &string);
@@ -253,6 +254,11 @@ Q_CORE_EXPORT uint qHash(const QJsonValue &value, uint seed = 0);
 Q_CORE_EXPORT QDebug operator<<(QDebug, const QJsonValue &);
 #endif
 
+#ifndef QT_NO_DATASTREAM
+Q_CORE_EXPORT QDataStream &operator<<(QDataStream &, const QJsonValue &);
+Q_CORE_EXPORT QDataStream &operator>>(QDataStream &, QJsonValue &);
+#endif
+
 QT_END_NAMESPACE
 
 #endif // QJSONVALUE_H
-- 
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