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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QDECLARATIVEJSENGINE_P_H
+#define QDECLARATIVEJSENGINE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qdeclarativejsglobal_p.h"
+#include "qdeclarativejsastfwd_p.h"
+
+#include <QString>
+#include <QSet>
+
+QT_QML_BEGIN_NAMESPACE
+
+namespace QDeclarativeJS {
+class QML_PARSER_EXPORT 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 QDeclarativeJS::NameId &id);
+
+} // end of namespace QDeclarativeJS
+
+#if defined(Q_CC_MSVC) && _MSC_VER <= 1300
+//this ensures that code outside QDeclarativeJS can use the hash function
+//it also a workaround for some compilers
+inline uint qHash(const QDeclarativeJS::NameId &nameId) { return QDeclarativeJS::qHash(nameId); }
+#endif
+
+namespace QDeclarativeJS {
+
+class Lexer;
+class NodePool;
+
+namespace Ecma {
+
+class QML_PARSER_EXPORT 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 QML_PARSER_EXPORT 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 QML_PARSER_EXPORT Engine
+{
+    Lexer *_lexer;
+    NodePool *_nodePool;
+    QSet<NameId> _literals;
+    QList<QDeclarativeJS::AST::SourceLocation> _comments;
+
+public:
+    Engine();
+    ~Engine();
+
+    QSet<NameId> literals() const;
+
+    void addComment(int pos, int len, int line, int col);
+    QList<QDeclarativeJS::AST::SourceLocation> comments() 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 QDeclarativeJS
+
+QT_QML_END_NAMESPACE
+
+#endif // QDECLARATIVEJSENGINE_P_H