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diff --git a/src/libs/cplusplus/LookupContext.h b/src/libs/cplusplus/LookupContext.h
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+/***************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact:  Qt Software Information (qt-info@nokia.com)
+**
+** 
+** Non-Open Source Usage  
+** 
+** Licensees may use this file in accordance with the Qt Beta Version
+** License Agreement, Agreement version 2.2 provided with the Software or,
+** alternatively, in accordance with the terms contained in a written
+** agreement between you and Nokia.  
+** 
+** GNU General Public License Usage 
+** 
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the packaging
+** of this file.  Please review the following information to ensure GNU
+** General Public Licensing requirements will be met:
+**
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt GPL Exception version
+** 1.2, included in the file GPL_EXCEPTION.txt in this package.  
+** 
+***************************************************************************/
+#ifndef CPLUSPLUS_LOOKUPCONTEXT_H
+#define CPLUSPLUS_LOOKUPCONTEXT_H
+
+#include <SymbolVisitor.h>
+#include <cplusplus/CppDocument.h>
+
+#include <QList>
+#include <QSet>
+#include <QMap>
+
+namespace CPlusPlus {
+
+class CPLUSPLUS_EXPORT LookupUtils
+{
+public:
+    static bool isNameCompatibleWithIdentifier(Name *name,
+                                               Identifier *id);
+};
+
+class CPLUSPLUS_EXPORT LookupContext: LookupUtils
+{
+public:
+    LookupContext(Control *control = 0);
+
+    LookupContext(Symbol *symbol,
+                  Document::Ptr expressionDocument,
+                  Document::Ptr thisDocument,
+                  const QMap<QString, Document::Ptr> &documents);
+
+    LookupContext(Symbol *symbol,
+                  const LookupContext &context);
+
+    LookupContext(Symbol *symbol,
+                  Document::Ptr thisDocument,
+                  const LookupContext &context);
+
+    bool isValid() const;
+    operator bool() const;
+
+    Control *control() const;
+    Symbol *symbol() const;
+    Document::Ptr expressionDocument() const;
+    Document::Ptr thisDocument() const;
+    Document::Ptr document(const QString &fileName) const;
+
+    QList<Symbol *> resolve(Name *name) const
+    { return resolve(name, visibleScopes()); }
+
+    QList<Symbol *> resolveNamespace(Name *name) const
+    { return resolveNamespace(name, visibleScopes()); }
+
+    QList<Symbol *> resolveClass(Name *name) const
+    { return resolveClass(name, visibleScopes()); }
+
+    QList<Symbol *> resolveClassOrNamespace(Name *name) const
+    { return resolveClassOrNamespace(name, visibleScopes()); }
+
+    QMap<QString, Document::Ptr> documents() const
+    { return _documents; }
+
+    enum ResolveMode {
+        ResolveSymbol           = 0x01,
+        ResolveClass            = 0x02,
+        ResolveNamespace        = 0x04,
+        ResolveClassOrNamespace = ResolveClass  | ResolveNamespace,
+        ResolveAll              = ResolveSymbol | ResolveClassOrNamespace
+    };
+
+    Identifier *identifier(Name *name) const;
+
+    QList<Symbol *> resolve(Name *name, const QList<Scope *> &visibleScopes,
+                            ResolveMode mode = ResolveAll) const;
+
+    QList<Symbol *> resolveNamespace(Name *name, const QList<Scope *> &visibleScopes) const
+    { return resolve(name, visibleScopes, ResolveNamespace); }
+
+    QList<Symbol *> resolveClass(Name *name, const QList<Scope *> &visibleScopes) const
+    { return resolve(name, visibleScopes, ResolveClass); }
+
+    QList<Symbol *> resolveClassOrNamespace(Name *name, const QList<Scope *> &visibleScopes) const
+    { return resolve(name, visibleScopes, ResolveClassOrNamespace); }
+
+    QList<Scope *> visibleScopes() const
+    { return _visibleScopes; }
+
+    QList<Scope *> visibleScopes(const QPair<FullySpecifiedType, Symbol *> &result) const;
+
+    QList<Scope *> expand(const QList<Scope *> &scopes) const;
+
+    void expand(const QList<Scope *> &scopes, QList<Scope *> *expandedScopes) const;
+
+    void expand(Scope *scope, const QList<Scope *> &visibleScopes,
+                QList<Scope *> *expandedScopes) const;
+
+private:
+    QList<Scope *> buildVisibleScopes();
+
+private:
+    Control *_control;
+
+    // The current symbol.
+    Symbol *_symbol;
+
+    // The current expression.
+    Document::Ptr _expressionDocument;
+
+    // The current document.
+    Document::Ptr _thisDocument;
+
+    // All documents.
+    QMap<QString, Document::Ptr> _documents;
+
+    // Visible scopes.
+    QList<Scope *> _visibleScopes;
+};
+
+} // end of namespace CPlusPlus
+
+#endif // CPLUSPLUS_LOOKUPCONTEXT_H