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diff --git a/tests/manual/plain-cplusplus/Preprocessor.h b/tests/manual/plain-cplusplus/Preprocessor.h
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+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+#ifndef CPLUSPLUS_PREPROCESSOR_H
+#define CPLUSPLUS_PREPROCESSOR_H
+
+#include <CPlusPlusForwardDeclarations.h>
+#include <iosfwd>
+#include <vector>
+#include <map>
+
+namespace CPlusPlus {
+
+class Lexer;
+class Token;
+
+class CPLUSPLUS_EXPORT StringRef
+{
+    const char *_text;
+    unsigned _size;
+
+public:
+    typedef const char *iterator;
+    typedef const char *const_iterator;
+
+    StringRef()
+        : _text(0), _size(0) {}
+
+    StringRef(const char *text, unsigned size)
+        : _text(text), _size(size) {}
+
+    StringRef(const char *text)
+        : _text(text), _size(strlen(text)) {}
+
+    inline const char *text() const { return _text; }
+    inline unsigned size() const { return _size; }
+
+    inline const_iterator begin() const { return _text; }
+    inline const_iterator end() const { return _text + _size; }
+
+    bool operator == (const StringRef &other) const
+    {
+        if (_size == other._size)
+            return _text == other._text || ! strncmp(_text, other._text, _size);
+
+        return false;
+    }
+
+    bool operator != (const StringRef &other) const
+    { return ! operator == (other); }
+
+    bool operator < (const StringRef &other) const
+    { return std::lexicographical_compare(begin(), end(), other.begin(), other.end()); }
+};
+
+class CPLUSPLUS_EXPORT Preprocessor
+{
+public:
+    Preprocessor(std::ostream &out);
+
+    void operator()(const char *source, unsigned size, const StringRef &currentFileName);
+
+private:
+    struct Macro
+    {
+        Macro(): isFunctionLike(false), isVariadic(false) {}
+
+        std::vector<StringRef> formals;
+        std::vector<Token> body;
+        bool isFunctionLike: 1;
+        bool isVariadic: 1;
+    };
+
+    void run(const char *source, unsigned size);
+
+    Lexer *switchLexer(Lexer *lex);
+    StringRef switchSource(const StringRef &source);
+
+    const Macro *resolveMacro(const StringRef &name) const;
+
+    StringRef asStringRef(const Token &tk) const;
+    void lex(Token *tk);
+    bool isValidToken(const Token &tk) const;
+
+    void handlePreprocessorDirective(Token *tk);
+    void handleDefineDirective(Token *tk);
+    void skipPreprocesorDirective(Token *tk);
+
+    void collectActualArguments(Token *tk, std::vector<std::vector<Token> > *actuals);
+    void scanActualArgument(Token *tk, std::vector<Token> *tokens);
+
+private:
+    struct TokenBuffer;
+
+    std::ostream &out;
+    StringRef _currentFileName;
+    Lexer *_lexer;
+    StringRef _source;
+    TokenBuffer *_tokenBuffer;
+    bool inPreprocessorDirective: 1;
+    std::map<StringRef, Macro> macros;
+};
+
+} // end of namespace CPlusPlus
+
+CPLUSPLUS_EXPORT std::ostream &operator << (std::ostream &out, const CPlusPlus::StringRef &s);
+
+#endif // CPLUSPLUS_PREPROCESSOR_H
+