Function findErrorLocation

src/kernels/execution/helpers.ts:864–890

(traceback: string[], cell: NotebookCell)

}

export function findErrorLocation(traceback: string[], cell: NotebookCell) {
    const cellRegex = /Cell\s+In\s*\[(?<executionCount>\d+)\],\s*line (?<lineNumber>\d+).*/;
    // older versions of IPython ~8.3.0
    const inputRegex = /Input\s+?In\s*\[(?<executionCount>\d+)\][^<]*<cell line:\s?(?<lineNumber>\d+)>.*/;
    let lineNumber: number | undefined = undefined;
    for (const line of traceback) {
        const cleanLine = removeAnsiEscapeCodes(line);
        const lineMatch = cellRegex.exec(cleanLine) ?? inputRegex.exec(cleanLine);
        if (lineMatch && lineMatch.groups) {
            lineNumber = parseInt(lineMatch.groups['lineNumber']);
            break;
        }
    }

    let range: Range | undefined = undefined;
    if (lineNumber && lineNumber > 0 && lineNumber <= cell.document.lineCount) {
        const line = cell.document.lineAt(lineNumber - 1);
        const end = line.text.split('#')[0].trimEnd().length;

        range = new Range(
            new Position(line.lineNumber, line.firstNonWhitespaceCharacterIndex),
            new Position(line.lineNumber, end)
        );
    }

    return range;
}