highlighter.h

/*
 * Copyright 2019 Green Radio Software Solutions (GRSS)
 * Released under GPL3 License
 * QSyntaxHighlighter - A syntax highlighter written in Qt

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * */

#ifndef HIGHLIGHTER_H
#define HIGHLIGHTER_H

#include <QSyntaxHighlighter>
#include <QTextCharFormat>
#include <QRegularExpression>
#include <QDebug>
#include <QVector>

QT_BEGIN_NAMESPACE
class QTextDocument;
QT_END_NAMESPACE

class Highlighter : public QSyntaxHighlighter
{
    Q_OBJECT

public:
    Highlighter(QTextDocument *parent = nullptr);

    void addHighlightRule(QString word);
    void removeHighlightRule(QString word);
    void clearHighlightRules();

protected:
    void highlightBlock(const QString &text) override;

private:
    struct HighlightingRule
    {
        QRegularExpression pattern;
        QTextCharFormat format;
    };

    bool containsRule(HighlightingRule chkRule);
    QVector<HighlightingRule> highlightingRules;
    QTextCharFormat spellingErrorFormat;
};

#endif // HIGHLIGHTER_H