private void handleError()

in src/main/java/org/apache/bsf/engines/javascript/JavaScriptEngine.java [136:175]
28 lines of code
11 McCabe index (conditional complexity)

    private void handleError(Throwable t) throws BSFException {
        if (t instanceof WrappedException) {
            t = ((WrappedException) t).getWrappedException();
        }

        String message = null;
        Throwable target = t;

        if (t instanceof JavaScriptException) {
            message = t.getLocalizedMessage();

            // Is it an exception wrapped in a JavaScriptException?
            final Object value = ((JavaScriptException) t).getValue();
            if (value instanceof Throwable) {
                // likely a wrapped exception from a LiveConnect call.
                // Display its stack trace as a diagnostic
                target = (Throwable) value;
            }
        } else if (t instanceof EvaluatorException || t instanceof SecurityException) {
            message = t.getLocalizedMessage();
        } else if (t instanceof RuntimeException) {
            message = "Internal Error: " + t.toString();
        } else if (t instanceof StackOverflowError) {
            message = "Stack Overflow";
        }

        if (message == null) {
            message = t.toString();
        }

        if (t instanceof Error && !(t instanceof StackOverflowError)) {
            // Re-throw Errors because we're supposed to let the JVM see it
            // Don't re-throw StackOverflows, because we know we've
            // corrected the situation by aborting the loop and
            // a long stacktrace would end up on the user's console
            throw (Error) t;
        } else {
            throw new BSFException(BSFException.REASON_OTHER_ERROR, "JavaScript Error: " + message, target);
        }
    }