/****************************************************************************
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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 QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
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** Beta Release License Agreement.
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** 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
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
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** packaging of this file.  Please review the following information to
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****************************************************************************/

#ifndef QMLBASICSCRIPT_P_H
#define QMLBASICSCRIPT_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <QtCore/QList>
#include <QtCore/QByteArray>
#include <QtCore/QVariant>
#include <private/qmlparser_p.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

class QmlRefCount;
class QmlContext;
class QmlBasicScriptPrivate;
class QmlBasicScriptNodeCache;
class QmlBasicScript
{
public:
    QmlBasicScript();
    ~QmlBasicScript();

    void load(const char *, QmlRefCount * = 0);

    // Always 4-byte aligned
    const char *compileData() const;
    unsigned int compileDataSize() const;

    QByteArray expression() const;

    struct Expression
    {
        QmlParser::Object *component;
        QmlParser::Object *context;
        QmlParser::Property *property;
        QmlParser::Variant expression;
        QHash<QString, QmlParser::Object *> ids;
    };

    bool compile(const Expression &);
    bool isValid() const;

    void clear();

    void dump();

    QVariant run(QmlContext *, QObject *);

    bool isSingleIdFetch() const;
    int singleIdFetchIndex() const;

    bool isSingleContextProperty() const;
    int singleContextPropertyIndex() const;
private:
    int flags;
    QmlBasicScriptPrivate *d;
    QmlRefCount *rc;
};

QT_END_NAMESPACE

QT_END_HEADER

#endif // QMLBASICSCRIPT_P_H