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**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** This file is part of the Qt Build Suite.
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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_RULESAPPLICATOR_H
#define QBS_RULESAPPLICATOR_H

#include "artifactlist.h"
#include "forward_decls.h"
#include <language/filetags.h>
#include <language/forward_decls.h>
#include <language/scriptpropertyobserver.h>
#include <logging/logger.h>

#include <QMap>
#include <QScriptValue>
#include <QString>

namespace qbs {
namespace Internal {
class ScriptEngine;

typedef QMap<FileTag, ArtifactList> ArtifactsPerFileTagMap;

class RulesApplicator : private ScriptPropertyObserver
{
public:
    RulesApplicator(const ResolvedProductPtr &product, ArtifactsPerFileTagMap &artifactsPerFileTag,
                    const Logger &logger);
    void applyAllRules();
    void applyRule(const RuleConstPtr &rule);

private:
    void doApply(const ArtifactList &inputArtifacts, QScriptValue &prepareScriptContext);
    void setupScriptEngineForArtifact(Artifact *artifact);
    Artifact *createOutputArtifact(const RuleArtifactConstPtr &ruleArtifact,
                                   const ArtifactList &inputArtifacts);
    QString resolveOutPath(const QString &path) const;
    RulesEvaluationContextPtr evalContext() const;
    ScriptEngine *engine() const;
    QScriptValue scope() const;
    void onPropertyRead(const QScriptValue &object, const QString &name, const QScriptValue &value);

    const ResolvedProductPtr m_product;
    ArtifactsPerFileTagMap &m_artifactsPerFileTag;

    RuleConstPtr m_rule;
    TransformerPtr m_transformer;
    Logger m_logger;
    qint64 m_productObjectId;
};

} // namespace Internal
} // namespace qbs

#endif // QBS_RULESAPPLICATOR_H