Qt Reference Documentation

main.cpp Example File

script/marshal/main.cpp
 /****************************************************************************
 **
 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** You may use this file under the terms of the BSD license as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
 **     the names of its contributors may be used to endorse or promote
 **     products derived from this software without specific prior written
 **     permission.
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QtCore>
 #include <QtScript>

 template <class Container>
 QScriptValue toScriptValue(QScriptEngine *eng, const Container &cont)
 {
     QScriptValue a = eng->newArray();
     typename Container::const_iterator begin = cont.begin();
     typename Container::const_iterator end = cont.end();
     typename Container::const_iterator it;
     for (it = begin; it != end; ++it)
         a.setProperty(quint32(it - begin), qScriptValueFromValue(eng, *it));
     return a;
 }

 template <class Container>
 void fromScriptValue(const QScriptValue &value, Container &cont)
 {
     quint32 len = value.property("length").toUInt32();
     for (quint32 i = 0; i < len; ++i) {
         QScriptValue item = value.property(i);
         typedef typename Container::value_type ContainerValue;
         cont.push_back(qscriptvalue_cast<ContainerValue>(item));
     }
 }

 typedef QVector<int> IntVector;
 typedef QVector<QString> StringVector;

 Q_DECLARE_METATYPE(IntVector)
 Q_DECLARE_METATYPE(StringVector)

 int main(int argc, char *argv[])
 {
     QCoreApplication app(argc, argv);

     QScriptEngine eng;
     // register our custom types
     qScriptRegisterMetaType<IntVector>(&eng, toScriptValue, fromScriptValue);
     qScriptRegisterMetaType<StringVector>(&eng, toScriptValue, fromScriptValue);

     QScriptValue val = eng.evaluate("[1, 4, 7, 11, 50, 3, 19, 60]");

     fprintf(stdout, "Script array: %s\n", qPrintable(val.toString()));

     IntVector iv = qscriptvalue_cast<IntVector>(val);

     fprintf(stdout, "qscriptvalue_cast to QVector<int>: ");
     for (int i = 0; i < iv.size(); ++i)
         fprintf(stdout, "%s%d", (i > 0) ? "," : "", iv.at(i));
     fprintf(stdout, "\n");

     val = eng.evaluate("[9, 'foo', 46.5, 'bar', 'Qt', 555, 'hello']");

     fprintf(stdout, "Script array: %s\n", qPrintable(val.toString()));

     StringVector sv = qscriptvalue_cast<StringVector>(val);

     fprintf(stdout, "qscriptvalue_cast to QVector<QString>: ");
     for (int i = 0; i < sv.size(); ++i)
         fprintf(stdout, "%s%s", (i > 0) ? "," : "", qPrintable(sv.at(i)));
     fprintf(stdout, "\n");

     return 0;
 }
X

Thank you for giving your feedback.

Make sure it is related to this specific page. For more general bugs and requests, please use the Qt Bug Tracker.

[0]; s.parentNode.insertBefore(ga, s); })();