/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Build Suite.
**
** 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
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** use the contact form at http://qt.digia.com/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 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.
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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****************************************************************************/

#ifndef QBS_EVALUATIONDATA_H
#define QBS_EVALUATIONDATA_H

#include <QHash>
#include <QScriptEngine>
#include <QScriptValue>
#include <QVariant>

namespace qbs {
namespace Internal {

class Evaluator;
class Item;

class EvaluationData
{
public:
    Evaluator *evaluator;
    const Item *item;
    mutable QHash<QScriptString, QScriptValue> valueCache;

    void attachTo(QScriptValue &);
    static EvaluationData *get(const QScriptValue &);
};

inline void EvaluationData::attachTo(QScriptValue &scriptValue)
{
    QVariant v;
    v.setValue<quintptr>(reinterpret_cast<quintptr>(this));
    scriptValue.setData(scriptValue.engine()->newVariant(v));
}

inline EvaluationData *EvaluationData::get(const QScriptValue &scriptValue)
{
    const quintptr ptr = scriptValue.data().toVariant().value<quintptr>();
    return reinterpret_cast<EvaluationData *>(ptr);
}

} // namespace Internal
} // namespace qbs

#endif // QBS_EVALUATIONDATA_H