Q_OBJECT

explicit Highlighter(QTextDocument *parent);

void setSymbols(const QStringList &symbols);

void highlightBlock(const QString &text) override;

struct HighlightingRule {

QRegularExpression pattern;

QTextCharFormat format;

};

QVector<HighlightingRule> mHighlightingRules;

QVector<HighlightingRule> mHighlightingRulesWithSymbols;

QRegularExpression mCommentStartExpression;

QRegularExpression mCommentEndExpression;

QTextCharFormat mKeywordFormat;

QTextCharFormat mClassFormat;

QTextCharFormat mSingleLineCommentFormat;

QTextCharFormat mMultiLineCommentFormat;

QTextCharFormat mQuotationFormat;

QTextCharFormat mSymbolFormat;

Q_OBJECT

explicit CodeEditor(QWidget *parent);

CodeEditor(const CodeEditor &) = delete;

CodeEditor &operator=(const CodeEditor &) = delete;

void lineNumberAreaPaintEvent(QPaintEvent *event);

int lineNumberAreaWidth();

/**

void setError(const QString &code, int errorLine, const QStringList &symbols);

void resizeEvent(QResizeEvent *event) override;

private slots:

void updateLineNumberAreaWidth(int newBlockCount);

void highlightErrorLine();

void updateLineNumberArea(const QRect &, int);

QWidget *mLineNumberArea;

Highlighter *mHighlighter;

int mErrorPosition;

explicit LineNumberArea(CodeEditor *editor) : QWidget(editor) {

mCodeEditor = editor;

}

QSize sizeHint() const override {

return QSize(mCodeEditor->lineNumberAreaWidth(), 0);

}

void paintEvent(QPaintEvent *event) override {

mCodeEditor->lineNumberAreaPaintEvent(event);

}

CodeEditor *mCodeEditor;