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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2012 Dmitry Savchenko.
** Copyright (c) 2010 Vasiliy Sorokin.
**
** Contact: http://www.qt-project.org/
**
**
** GNU Lesser General Public License Usage
**
** 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.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**************************************************************************/

#ifndef LINEPARSER_H
#define LINEPARSER_H

#include "keyword.h"
#include "todoitem.h"

namespace Todo {
namespace Internal {

class LineParser
{
public:
    explicit LineParser(const KeywordList &keywordList);

    void setKeywordList(const KeywordList &keywordList);
    QList<TodoItem> parse(const QString &line);

    // This can also be used from KeywordDialog to avoid code duplication
    static bool isKeywordSeparator(const QChar &ch);

private:

    // map key here is keyword start position in the text line
    // and map value is keyword index in m_keywords
    typedef QMap<int, int> KeywordEntryCandidates;

    struct KeywordEntry {
        int keywordIndex;
        int keywordStart;
        QString text;
    };

    KeywordEntryCandidates findKeywordEntryCandidates(const QString &line);
    bool isKeywordAt(int index, const QString &line, const QString &keyword);
    bool isFirstCharOfTheWord(int index, const QString &line);
    bool isLastCharOfTheWord(int index, const QString &line);
    QList<KeywordEntry> keywordEntriesFromCandidates(const QMap<int, int> &candidates, const QString &line);
    QString trimSeparators(const QString &string);
    bool startsWithSeparator(const QString &string);
    bool endsWithSeparator(const QString &string);
    QList<TodoItem> todoItemsFromKeywordEntries(const QList<KeywordEntry> &entries);

    KeywordList m_keywords;
};

} // namespace Internal
} // namespace Todo

#endif // LINEPARSER_H