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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtSCriptTools module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qscriptobjectsnapshot_p.h"
#include <QtCore/qmap.h>
#include <QtCore/qset.h>
#include <QtCore/qvector.h>
#include <QtCore/qnumeric.h>
#include <QtScript/qscriptvalueiterator.h>
QT_BEGIN_NAMESPACE
QScriptObjectSnapshot::QScriptObjectSnapshot()
{
}
QScriptObjectSnapshot::~QScriptObjectSnapshot()
{
}
static bool _q_equal(const QScriptValue &v1, const QScriptValue &v2)
{
if (v1.strictlyEquals(v2))
return true;
if (v1.isNumber() && v2.isNumber() && qIsNaN(v1.toNumber()) && qIsNaN(v2.toNumber()))
return true;
return false;
}
QScriptObjectSnapshot::Delta QScriptObjectSnapshot::capture(const QScriptValue &object)
{
Delta result;
QMap<QString, QScriptValueProperty> currProps;
QHash<QString, int> propertyNameToIndex;
{
int i = 0;
QScriptValueIterator it(object);
while (it.hasNext()) {
it.next();
QScriptValueProperty prop(it.name(), it.value(), it.flags());
currProps.insert(it.name(), prop);
propertyNameToIndex.insert(it.name(), i);
++i;
}
if (object.prototype().isValid()) {
QString __proto__ = QString::fromLatin1("__proto__");
QScriptValueProperty protoProp(
__proto__, object.prototype(),
QScriptValue::Undeletable | QScriptValue::ReadOnly);
currProps.insert(__proto__, protoProp);
propertyNameToIndex.insert(__proto__, i);
++i;
}
}
QSet<QString> prevSet;
for (int i = 0; i < m_properties.size(); ++i)
prevSet.insert(m_properties.at(i).name());
QSet<QString> currSet = currProps.keys().toSet();
QSet<QString> removedProperties = prevSet - currSet;
QSet<QString> addedProperties = currSet - prevSet;
QSet<QString> maybeChangedProperties = currSet & prevSet;
{
QMap<int, QScriptValueProperty> am;
QSet<QString>::const_iterator it;
for (it = addedProperties.constBegin(); it != addedProperties.constEnd(); ++it) {
int idx = propertyNameToIndex[*it];
am[idx] = currProps[*it];
}
result.addedProperties = am.values();
}
{
QSet<QString>::const_iterator it;
for (it = maybeChangedProperties.constBegin(); it != maybeChangedProperties.constEnd(); ++it) {
const QScriptValueProperty &p1 = currProps[*it];
const QScriptValueProperty &p2 = findProperty(*it);
if (!_q_equal(p1.value(), p2.value())
|| (p1.flags() != p2.flags())) {
result.changedProperties.append(p1);
}
}
}
result.removedProperties = removedProperties.toList();
m_properties = currProps.values();
return result;
}
QScriptValueProperty QScriptObjectSnapshot::findProperty(const QString &name) const
{
for (int i = 0; i < m_properties.size(); ++i) {
if (m_properties.at(i).name() == name)
return m_properties.at(i);
}
return QScriptValueProperty();
}
QScriptValuePropertyList QScriptObjectSnapshot::properties() const
{
return m_properties;
}
QT_END_NAMESPACE
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