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authorUlf Hermann <ulf.hermann@qt.io>2019-06-19 13:43:00 +0200
committerUlf Hermann <ulf.hermann@qt.io>2019-10-21 19:12:51 +0200
commit35adb74ddd915831789f0175423660f8e898942e (patch)
tree3ac0fd8be75f0b7e0391149d13aab51a7f02dd3f /src/corelib/serialization/qbinaryjsonvalue.cpp
parent559b563d711db0760a51b0dce26536dbc8766a9d (diff)
Reimplement JSON support on top of Cbor
In turn, deprecate the QJsonDocument methods that deal with JSON binary data. You should use CBOR for data serialization these days. [ChangeLog][Deprecation Notice] The binary JSON representation is deprecated. The CBOR format should be used instead. Fixes: QTBUG-47629 Change-Id: Ic8b92ea36de87815b12307a9d8b1095f07166db8 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src/corelib/serialization/qbinaryjsonvalue.cpp')
-rw-r--r--src/corelib/serialization/qbinaryjsonvalue.cpp155
1 files changed, 155 insertions, 0 deletions
diff --git a/src/corelib/serialization/qbinaryjsonvalue.cpp b/src/corelib/serialization/qbinaryjsonvalue.cpp
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index 0000000000..5e3a01ad38
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+++ b/src/corelib/serialization/qbinaryjsonvalue.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** 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-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qbinaryjsonobject_p.h"
+#include "qbinaryjsonvalue_p.h"
+#include "qbinaryjsonarray_p.h"
+#include "qbinaryjson_p.h"
+
+#include <qjsonarray.h>
+#include <qjsonobject.h>
+
+QT_BEGIN_NAMESPACE
+
+QBinaryJsonValue::QBinaryJsonValue(QBinaryJsonPrivate::MutableData *data,
+ QBinaryJsonPrivate::Base *parent,
+ const QBinaryJsonPrivate::Value &v)
+ : t(QJsonValue::Type(uint(v.type)))
+{
+ switch (t) {
+ case QJsonValue::Undefined:
+ case QJsonValue::Null:
+ dbl = 0;
+ break;
+ case QJsonValue::Bool:
+ b = v.toBoolean();
+ break;
+ case QJsonValue::Double:
+ dbl = v.toDouble(parent);
+ break;
+ case QJsonValue::String: {
+ QString s = v.toString(parent);
+ stringData = s.data_ptr();
+ stringData->ref.ref();
+ break;
+ }
+ case QJsonValue::Array:
+ case QJsonValue::Object:
+ d = data;
+ base = v.base(parent);
+ break;
+ }
+ if (d)
+ d->ref.ref();
+}
+
+QBinaryJsonValue::QBinaryJsonValue(QString string)
+ : stringData(*reinterpret_cast<QStringData **>(&string)), t(QJsonValue::String)
+{
+ stringData->ref.ref();
+}
+
+QBinaryJsonValue::QBinaryJsonValue(const QBinaryJsonArray &a)
+ : base(a.a), d(a.d), t(QJsonValue::Array)
+{
+ if (d)
+ d->ref.ref();
+}
+
+QBinaryJsonValue::QBinaryJsonValue(const QBinaryJsonObject &o)
+ : base(o.o), d(o.d), t(QJsonValue::Object)
+{
+ if (d)
+ d->ref.ref();
+}
+
+QBinaryJsonValue::~QBinaryJsonValue()
+{
+ if (t == QJsonValue::String && stringData && !stringData->ref.deref())
+ free(stringData);
+
+ if (d && !d->ref.deref())
+ delete d;
+}
+
+QBinaryJsonValue QBinaryJsonValue::fromJsonValue(const QJsonValue &json)
+{
+ switch (json.type()) {
+ case QJsonValue::Bool:
+ return QBinaryJsonValue(json.toBool());
+ case QJsonValue::Double:
+ return QBinaryJsonValue(json.toDouble());
+ case QJsonValue::String:
+ return QBinaryJsonValue(json.toString());
+ case QJsonValue::Array:
+ return QBinaryJsonArray::fromJsonArray(json.toArray());
+ case QJsonValue::Object:
+ return QBinaryJsonObject::fromJsonObject(json.toObject());
+ case QJsonValue::Null:
+ return QBinaryJsonValue(QJsonValue::Null);
+ case QJsonValue::Undefined:
+ return QBinaryJsonValue(QJsonValue::Undefined);
+ }
+ Q_UNREACHABLE();
+ return QBinaryJsonValue(QJsonValue::Null);
+}
+
+QString QBinaryJsonValue::toString() const
+{
+ if (t != QJsonValue::String)
+ return QString();
+ stringData->ref.ref(); // the constructor below doesn't add a ref.
+ QStringDataPtr holder = { stringData };
+ return QString(holder);
+}
+
+void QBinaryJsonValue::detach()
+{
+ if (!d)
+ return;
+
+ QBinaryJsonPrivate::MutableData *x = d->clone(base);
+ x->ref.ref();
+ if (!d->ref.deref())
+ delete d;
+ d = x;
+ base = static_cast<QBinaryJsonPrivate::Object *>(d->header->root());
+}
+
+QT_END_NAMESPACE