public boolean consume()

in http2/src/main/java/org/apache/mina/http2/impl/Http2DataFrameDecoder.java [66:101]

36 lines of code
12 McCabe index (conditional complexity)


    public boolean consume(ByteBuffer buffer) {
        while ((getValue() == null) && buffer.remaining() > 0) {
            switch (state) {
            case PAD_LENGTH:
                padLength = buffer.get();
                if ((getHeader().getLength() - 1 - padLength) > 0) {
                    state = State.DATA;
                    decoder = new BytePartialDecoder(getHeader().getLength() - 1 - padLength);
                } else if (padLength > 0) {
                    state = State.PADDING;
                    decoder = new BytePartialDecoder(padLength);
                } else {
                    setValue(builder.build());
                }
                break;
            case DATA:
                if (decoder.consume(buffer)) {
                    builder.data(((BytePartialDecoder)decoder).getValue());
                    if (isFlagSet(FLAGS_PADDING) && (padLength > 0)) {
                      state = State.PADDING;
                      decoder = new BytePartialDecoder(padLength);
                    } else {
                        setValue(builder.build());
                    }
                }
                break;
            case PADDING:
                if (decoder.consume(buffer)) {
                    builder.padding(((BytePartialDecoder)decoder).getValue());
                    setValue(builder.build());
                }
                break;
            }
        }
        return getValue() != null;
    }