private static void format()

in log4j-api/src/main/java/org/apache/logging/log4j/message/MapMessageJsonFormatter.java [81:166]
70 lines of code
19 McCabe index (conditional complexity)

    private static void format(
            final StringBuilder sb,
            final Object object,
            final int depth) {

        if (depth >= MAX_DEPTH) {
            throw new IllegalArgumentException("maxDepth has been exceeded");
        }

        // null
        if (object == null) {
            sb.append("null");
        }

        // map
        else if (object instanceof IndexedStringMap) {
            final IndexedStringMap map = (IndexedStringMap) object;
            formatIndexedStringMap(sb, map, depth);
        } else if (object instanceof Map) {
            @SuppressWarnings("unchecked")
            final Map<Object, Object> map = (Map<Object, Object>) object;
            formatMap(sb, map, depth);
        }

        // list & collection
        else if (object instanceof List) {
            @SuppressWarnings("unchecked")
            final List<Object> list = (List<Object>) object;
            formatList(sb, list, depth);
        } else if (object instanceof Collection) {
            @SuppressWarnings("unchecked")
            final Collection<Object> collection = (Collection<Object>) object;
            formatCollection(sb, collection, depth);
        }

        // number & boolean
        else if (object instanceof Number) {
            final Number number = (Number) object;
            formatNumber(sb, number);
        } else if (object instanceof Boolean) {
            final boolean booleanValue = (boolean) object;
            formatBoolean(sb, booleanValue);
        }

        // formattable
        else if (object instanceof StringBuilderFormattable) {
            final StringBuilderFormattable formattable = (StringBuilderFormattable) object;
            formatFormattable(sb, formattable);
        }

        // arrays
        else if (object instanceof char[]) {
            final char[] charValues = (char[]) object;
            formatCharArray(sb, charValues);
        } else if (object instanceof boolean[]) {
            final boolean[] booleanValues = (boolean[]) object;
            formatBooleanArray(sb, booleanValues);
        } else if (object instanceof byte[]) {
            final byte[] byteValues = (byte[]) object;
            formatByteArray(sb, byteValues);
        } else if (object instanceof short[]) {
            final short[] shortValues = (short[]) object;
            formatShortArray(sb, shortValues);
        } else if (object instanceof int[]) {
            final int[] intValues = (int[]) object;
            formatIntArray(sb, intValues);
        } else if (object instanceof long[]) {
            final long[] longValues = (long[]) object;
            formatLongArray(sb, longValues);
        } else if (object instanceof float[]) {
            final float[] floatValues = (float[]) object;
            formatFloatArray(sb, floatValues);
        } else if (object instanceof double[]) {
            final double[] doubleValues = (double[]) object;
            formatDoubleArray(sb, doubleValues);
        } else if (object instanceof Object[]) {
            final Object[] objectValues = (Object[]) object;
            formatObjectArray(sb, objectValues, depth);
        }

        // string
        else {
            formatString(sb, object);
        }

    }