lua_syntax_highlighter.h

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#ifndef LUA_SYNTAX_HIGHLIGHTER_H
#define LUA_SYNTAX_HIGHLIGHTER_H
 
#include <ui/qt/utils/theme_manager.h>
 
#include <QColor>
#include <QHash>
#include <QRegularExpression>
#include <QString>
#include <QSyntaxHighlighter>
#include <QTextCharFormat>
#include <QVector>
#include <QtGlobal>
 
class QTextDocument;

class LuaSyntaxHighlighter : public QSyntaxHighlighter
{
  public:
    explicit LuaSyntaxHighlighter(QTextDocument *parent);

    void updateColors();

    void setColors(const QHash<ThemeManager::ThemeToken, QColor> &colors);
 
  protected:
    void highlightBlock(const QString &text) override;
 
  private:
    struct Rule
    {
        QRegularExpression pattern;  
        QTextCharFormat format;      
    };
 
 
    QVector<Rule> rules_;                    
    QTextCharFormat stringFormat_;           
    QTextCharFormat commentFormat_;          
    QRegularExpression singleLineComment_;   
    QHash<ThemeManager::ThemeToken, QColor> colors_;  

    QColor color(ThemeManager::ThemeToken token) const;

    bool highlightLongBlock(const QString &text, bool isComment, bool continuingPrevious, qint32 eqCountFromState,
                            qint32 &nextStateEqCount);
    qint32 findLongBlockStart(const QString &text, qint32 from, bool isComment, qint32 &eqCount,
                              qint32 &tokenLength) const;
    qint32 findLongBlockEnd(const QString &text, qint32 from, qint32 eqCount) const;

    void buildRules();
};
 
#endif // LUA_SYNTAX_HIGHLIGHTER_H