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diff --git a/src/declarative/qml/parser/qmljsengine_p.h b/src/declarative/qml/parser/qmljsengine_p.h
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+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact:  Qt Software Information (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 qt-sales@nokia.com.
+**
+**************************************************************************/
+
+#ifndef QMLJSENGINE_P_H
+#define QMLJSENGINE_P_H
+
+#include <QString>
+#include <QSet>
+
+#include "qmljsastfwd_p.h"
+
+QT_BEGIN_NAMESPACE
+
+namespace QmlJS {
+class NameId
+{
+    QString _text;
+
+public:
+    NameId(const QChar *u, int s)
+        : _text(u, s)
+    { }
+
+    const QString asString() const
+    { return _text; }
+
+    bool operator == (const NameId &other) const
+    { return _text == other._text; }
+
+    bool operator != (const NameId &other) const
+    { return _text != other._text; }
+
+    bool operator < (const NameId &other) const
+    { return _text < other._text; }
+};
+
+uint qHash(const QmlJS::NameId &id);
+
+} // end of namespace QmlJS
+
+#if defined(Q_CC_MSVC) && _MSC_VER <= 1300
+//this ensures that code outside QmlJS can use the hash function
+//it also a workaround for some compilers
+inline uint qHash(const QmlJS::NameId &nameId) { return QmlJS::qHash(nameId); }
+#endif
+
+namespace QmlJS {
+
+class Lexer;
+class NodePool;
+
+namespace Ecma {
+
+class RegExp
+{
+public:
+    enum RegExpFlag {
+        Global     = 0x01,
+        IgnoreCase = 0x02,
+        Multiline  = 0x04
+    };
+
+public:
+    static int flagFromChar(const QChar &);
+    static QString flagsToString(int flags);
+};
+
+} // end of namespace Ecma
+
+class DiagnosticMessage
+{
+public:
+    enum Kind { Warning, Error };
+
+    DiagnosticMessage()
+        : kind(Error) {}
+
+    DiagnosticMessage(Kind kind, const AST::SourceLocation &loc, const QString &message)
+        : kind(kind), loc(loc), message(message) {}
+
+    bool isWarning() const
+    { return kind == Warning; }
+
+    bool isError() const
+    { return kind == Error; }
+
+    Kind kind;
+    AST::SourceLocation loc;
+    QString message;
+};
+
+class Engine
+{
+    Lexer *_lexer;
+    NodePool *_nodePool;
+    QSet<NameId> _literals;
+
+public:
+    Engine();
+    ~Engine();
+
+    QSet<NameId> literals() const;
+
+    NameId *intern(const QChar *u, int s);
+
+    static QString toString(NameId *id);
+
+    Lexer *lexer() const;
+    void setLexer(Lexer *lexer);
+
+    NodePool *nodePool() const;
+    void setNodePool(NodePool *nodePool);
+};
+
+} // end of namespace QmlJS
+
+QT_END_NAMESPACE
+
+#endif // QMLJSENGINE_P_H