#pragma once

// QCodeEditor
#include <QStyleSyntaxHighlighter> // Required for inheritance

// Qt
#include <QVector>
#include <QRegularExpression>

/**
 * @brief Class, that describes XML code
 * highlighter.
 */
class QXMLHighlighter : public QStyleSyntaxHighlighter
{
    Q_OBJECT
public:

    /**
     * @brief Constructor.
     * @param document Pointer to document.
     */
    explicit QXMLHighlighter(QTextDocument* document=nullptr);

protected:

    void highlightBlock(const QString& text) override;

private:

    void highlightByRegex(const QTextCharFormat& format,
                          const QRegularExpression& regex,
                          const QString& text);

    QVector<QRegularExpression> m_xmlKeywordRegexes;
    QRegularExpression          m_xmlElementRegex;
    QRegularExpression          m_xmlAttributeRegex;
    QRegularExpression          m_xmlValueRegex;
    QRegularExpression          m_xmlCommentBeginRegex;
    QRegularExpression          m_xmlCommentEndRegex;

};