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diff --git a/src/lib/buildgraph/projectbuilddata.h b/src/lib/buildgraph/projectbuilddata.h
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+++ b/src/lib/buildgraph/projectbuilddata.h
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+/****************************************************************************
+**
+** 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
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** 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.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+#ifndef QBS_PROJECTBUILDDATA_H
+#define QBS_PROJECTBUILDDATA_H
+
+#include "artifactlist.h"
+#include "forward_decls.h"
+#include <language/forward_decls.h>
+#include <logging/logger.h>
+#include <tools/persistentobject.h>
+
+#include <QHash>
+#include <QList>
+#include <QScriptValue>
+#include <QSet>
+#include <QString>
+
+namespace qbs {
+namespace Internal {
+class ScriptEngine;
+
+class ProjectBuildData : public PersistentObject
+{
+public:
+    ProjectBuildData();
+    ~ProjectBuildData();
+
+    static QString deriveBuildGraphFilePath(const QString &buildDir, const QString &projectId);
+
+    void insertIntoArtifactLookupTable(Artifact *artifact);
+    void removeFromArtifactLookupTable(Artifact *artifact);
+    QList<Artifact *> lookupArtifacts(const QString &filePath) const;
+    QList<Artifact *> lookupArtifacts(const QString &dirPath, const QString &fileName) const;
+    QList<Artifact *> lookupArtifacts(const Artifact *artifact) const;
+    void insertFileDependency(Artifact *artifact);
+    void removeArtifact(Artifact *artifact, const Logger &logger);
+    void updateNodesThatMustGetNewTransformer(const Logger &logger);
+
+    ArtifactList dependencyArtifacts;
+    RulesEvaluationContextPtr evaluationContext;
+    QSet<Artifact *> artifactsThatMustGetNewTransformers;
+    bool isDirty;
+
+private:
+    void load(PersistentPool &pool);
+    void store(PersistentPool &pool) const;
+    void updateNodeThatMustGetNewTransformer(Artifact *artifact, const Logger &logger);
+
+private:
+    QHash<QString, QHash<QString, QList<Artifact *> > > m_artifactLookupTable;
+};
+
+
+class BuildDataResolver
+{
+public:
+    BuildDataResolver(const Logger &logger);
+    void resolveBuildData(const ResolvedProjectPtr &resolvedProject,
+                          const RulesEvaluationContextPtr &evalContext);
+    void resolveProductBuildDataForExistingProject(const ResolvedProjectPtr &project,
+            const QList<ResolvedProductPtr> &freshProducts);
+
+    static void rescueBuildData(const ResolvedProjectConstPtr &source,
+                                const ResolvedProjectPtr &target, Logger logger);
+
+private:
+    void resolveProductBuildData(const ResolvedProductPtr &product);
+    RulesEvaluationContextPtr evalContext() const;
+    ScriptEngine *engine() const;
+    QScriptValue scope() const;
+
+    ResolvedProjectPtr m_project;
+    Logger m_logger;
+};
+
+} // namespace Internal
+} // namespace qbs
+
+#endif // QBS_PROJECTBUILDDATA_H