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**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** This file is part of the Qt Build Suite.
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** 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
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****************************************************************************/

#ifndef QBS_SCRIPTTOOLS_H
#define QBS_SCRIPTTOOLS_H

#include <tools/qbs_export.h>

#include <QScriptEngine>
#include <QScriptProgram>
#include <QScriptValue>
#include <QSet>
#include <QStringList>
#include <QVariantMap>

QT_BEGIN_NAMESPACE

QDataStream &operator<< (QDataStream &s, const QScriptProgram &script);
QDataStream &operator>> (QDataStream &s, QScriptProgram &script);

QT_END_NAMESPACE

namespace qbs {
namespace Internal {

template <typename C>
QScriptValue toScriptValue(QScriptEngine *scriptEngine, const C &container)
{
    QScriptValue v = scriptEngine->newArray(container.count());
    int i = 0;
    foreach (const typename C::value_type &item, container)
        v.setProperty(i++, scriptEngine->toScriptValue(item));
    return v;
}

void setConfigProperty(QVariantMap &cfg, const QStringList &name, const QVariant &value);
QVariant getConfigProperty(const QVariantMap &cfg, const QStringList &name);

QString toJSLiteral(const bool b);
QString toJSLiteral(const QString &str);
QString toJSLiteral(const QStringList &strs);
QString toJSLiteral(const QVariant &val);

/**
 * @brief push/pop a QScriptEngine's context the RAII way.
 */
class ScriptEngineContextPusher
{
public:
    ScriptEngineContextPusher(QScriptEngine *scriptEngine)
        : m_scriptEngine(scriptEngine)
    {
        m_scriptEngine->pushContext();
    }

    ~ScriptEngineContextPusher()
    {
        m_scriptEngine->popContext();
    }

private:
    QScriptEngine *m_scriptEngine;
};

template <class T>
void attachPointerTo(QScriptValue &scriptValue, T *ptr)
{
    QVariant v;
    v.setValue<quintptr>(reinterpret_cast<quintptr>(ptr));
    scriptValue.setData(scriptValue.engine()->newVariant(v));
}

template <class T>
T *attachedPointer(const QScriptValue &scriptValue)
{
    const quintptr ptr = scriptValue.data().toVariant().value<quintptr>();
    return reinterpret_cast<T *>(ptr);
}

} // namespace Internal
} // namespace qbs

#endif // QBS_SCRIPTTOOLS_H
