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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/

//
//  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.

#ifndef Patternist_TokenRevealer_h
#define Patternist_TokenRevealer_h

#include <QSet>

#include <private/qtokenizer_p.h>

QT_BEGIN_NAMESPACE

namespace QPatternist
{
    /**
     * @short Delegates another Tokenizer, and while doing so
     * prints the tokens it delivers to @c stderr.
     *
     * Hence, this class is used solely for debugging.
     *
     * @since 4.5
     */
    class TokenRevealer : public Tokenizer
    {
    public:
        TokenRevealer(const QUrl &uri,
                      const Tokenizer::Ptr &other);

        virtual ~TokenRevealer();

        virtual Token nextToken(YYLTYPE *const sourceLocator);
        virtual int commenceScanOnly();
        virtual void resumeTokenizationFrom(const int position);
        virtual void setParserContext(const ParserContext::Ptr &parseInfo);

    private:
        const Tokenizer::Ptr    m_tokenizer;
        QString                 m_result;
        QString                 m_indentationString;
    };
}

QT_END_NAMESPACE

#endif