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**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Build Suite.
**
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** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** use the contact form at http://qt.digia.com/contact-us.
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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
** ensure the GNU Lesser General Public License version 2.1 requirements
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****************************************************************************/

#ifndef QBS_TRANSFORMER_H
#define QBS_TRANSFORMER_H

#include "artifactset.h"
#include "forward_decls.h"
#include <language/forward_decls.h>
#include <language/property.h>
#include <tools/persistentobject.h>

#include <QHash>
#include <QScriptEngine>

namespace qbs {
namespace Internal {
class Artifact;
class AbstractCommand;
class Rule;
class ScriptEngine;

class Transformer : public PersistentObject
{
public:
    static TransformerPtr create() { return TransformerPtr(new Transformer); }

    ~Transformer();

    ArtifactSet inputs; // Subset of "children of all outputs".
    ArtifactSet outputs;
    RuleConstPtr rule;
    QList<AbstractCommandPtr> commands;
    PropertyList propertiesRequestedInPrepareScript;
    PropertyList propertiesRequestedInCommands;
    QHash<QString, PropertyList> propertiesRequestedFromArtifactInPrepareScript;

    static QScriptValue translateFileConfig(QScriptEngine *scriptEngine,
                                            Artifact *artifact,
                                            const QString &defaultModuleName);
    static QScriptValue translateInOutputs(QScriptEngine *scriptEngine,
                                           const ArtifactSet &artifacts,
                                           const QString &defaultModuleName);

    ResolvedProductPtr product() const;
    static void setupInputs(QScriptValue targetScriptValue, const ArtifactSet &inputs,
            const QString &defaultModuleName);
    void setupInputs(QScriptValue targetScriptValue);
    void setupOutputs(QScriptEngine *scriptEngine, QScriptValue targetScriptValue);
    void createCommands(const ScriptFunctionConstPtr &script,
                        const RulesEvaluationContextPtr &evalContext, const QScriptValueList &args);

private:
    Transformer();

    void load(PersistentPool &pool);
    void store(PersistentPool &pool) const;
};

} // namespace Internal
} // namespace qbs

#endif // QBS_TRANSFORMER_H