Q_OBJECT

explicit Highlighter(QTextDocument *parent,

CodeEditorStyle *widgetStyle);

void setSymbols(const QStringList &symbols);

void setStyle(const CodeEditorStyle &newStyle);

void highlightBlock(const QString &text) override;

enum RuleRole {

Keyword = 1,

Class = 2,

Comment = 3,

Quote = 4,

Symbol = 5

};

struct HighlightingRule {

QRegularExpression pattern;

QTextCharFormat format;

RuleRole ruleRole;

};

void applyFormat(HighlightingRule &rule);

QVector<HighlightingRule> mHighlightingRules;

QVector<HighlightingRule> mHighlightingRulesWithSymbols;

QRegularExpression mCommentStartExpression;

QRegularExpression mCommentEndExpression;

QTextCharFormat mKeywordFormat;

QTextCharFormat mClassFormat;

QTextCharFormat mSingleLineCommentFormat;

QTextCharFormat mMultiLineCommentFormat;

QTextCharFormat mQuotationFormat;

QTextCharFormat mSymbolFormat;

CodeEditorStyle *mWidgetStyle;

Q_OBJECT

explicit CodeEditor(QWidget *parent);

CodeEditor(const CodeEditor &) = delete;

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

~CodeEditor() override;

void lineNumberAreaPaintEvent(const QPaintEvent *event);

int lineNumberAreaWidth();

void setStyle(const CodeEditorStyle& newStyle);

/**

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

/**

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

void setFileName(const QString &fileName) {

mFileName = fileName;

}

const QString& getFileName() const {

return mFileName;

}

void clear() {

mFileName.clear();

setPlainText(QString());

}

void resizeEvent(QResizeEvent *event) override;

private slots:

void updateLineNumberAreaWidth(int newBlockCount);

void highlightErrorLine();

void updateLineNumberArea(const QRect & /*rect*/, int /*dy*/);

QString generateStyleString();

QWidget *mLineNumberArea;

Highlighter *mHighlighter;

CodeEditorStyle *mWidgetStyle;

int mErrorPosition;

QString mFileName;

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;