Method decodeNext

src/main/java/co/nstant/in/cbor/CborDecoder.java:121–168

Decodes exactly one DataItem from the input stream. @return a DataItem or null if end of stream has reached. @throws CborException if decoding failed

()

     *             if decoding failed
     */
    public DataItem decodeNext() throws CborException {
        int symbol;
        try {
            symbol = inputStream.read();
        } catch (IOException ioException) {
            throw new CborException(ioException);
        }
        if (symbol == -1) {
            return null;
        }
        switch (MajorType.ofByte(symbol)) {
        case ARRAY:
            return arrayDecoder.decode(symbol);
        case BYTE_STRING:
            return byteStringDecoder.decode(symbol);
        case MAP:
            return mapDecoder.decode(symbol);
        case NEGATIVE_INTEGER:
            return negativeIntegerDecoder.decode(symbol);
        case UNICODE_STRING:
            return unicodeStringDecoder.decode(symbol);
        case UNSIGNED_INTEGER:
            return unsignedIntegerDecoder.decode(symbol);
        case SPECIAL:
            return specialDecoder.decode(symbol);
        case TAG:
            Tag tag = tagDecoder.decode(symbol);
            DataItem next = decodeNext();
            if (next == null) {
                throw new CborException("Unexpected end of stream: tag without following data item.");
            } else {
                if (autoDecodeRationalNumbers && tag.getValue() == 30) {
                    return decodeRationalNumber(next);
                } else if (autoDecodeLanguageTaggedStrings && tag.getValue() == 38) {
                    return decodeLanguageTaggedString(next);
                } else {
                    DataItem itemToTag = next;
                    while (itemToTag.hasTag())
                        itemToTag = itemToTag.getTag();
                    itemToTag.setTag(tag);
                    return next;
                }
            }
        case INVALID:
        default:
            throw new CborException("Not implemented major type " + symbol);
        }
    }

    private DataItem decodeLanguageTaggedString(DataItem dataItem) throws CborException {
        if (!(dataItem instanceof Array)) {