Add experimental clang code-model plug-in.

Previously known as the wip/clang branch.

Contributors (in alphabetical order):
- Christian Kamm <christian.d.kamm@nokia.com>
- Erik Verbruggen <erik.verbruggen@digia.com>
- Leandro Melo <leandro.melo@nokia.com>
- Peter Kuemmel <syntheticpp@gmx.net>
- Sergey Shambir <sergey.shambir.auto@gmail.com>

Change-Id: I4c3ff600a19b6732641c1d5ef28236bf2cc17737
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/clangcodemodel/clangprojectsettings.h

@@ -0,0 +1,82 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of Qt Creator.
+**
+** 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 CLANGPROJECTSETTINGS_H
+#define CLANGPROJECTSETTINGS_H
+
+#include "clang_global.h"
+
+#include <projectexplorer/project.h>
+
+#include <QObject>
+#include <QString>
+
+namespace ClangCodeModel {
+
+class CLANG_EXPORT ClangProjectSettings: public QObject
+{
+    Q_OBJECT
+
+public:
+    enum PchUsage {
+        PchUse_Unknown = 0,
+        PchUse_None = 1,
+        PchUse_BuildSystem_Exact = 2,
+        PchUse_BuildSystem_Fuzzy = 3,
+        PchUse_Custom = 4
+    };
+
+public:
+    ClangProjectSettings(ProjectExplorer::Project *project);
+    virtual ~ClangProjectSettings();
+
+    ProjectExplorer::Project *project() const;
+
+    PchUsage pchUsage() const;
+    void setPchUsage(PchUsage pchUsage);
+
+    QString customPchFile() const;
+    void setCustomPchFile(const QString &customPchFile);
+
+signals:
+    void pchSettingsChanged();
+
+public slots:
+    void pullSettings();
+    void pushSettings();
+
+private:
+    ProjectExplorer::Project *m_project;
+    PchUsage m_pchUsage;
+    QString m_customPchFile;
+};
+
+} // ClangCodeModel namespace
+
+#endif // CLANGPROJECTSETTINGS_H