private int decodeRawLiterals()

in java/src/main/java/com/epam/deltix/zstd/ZstdFrameDecompressor.java [795:841]
38 lines of code
6 McCabe index (conditional complexity)

    private int decodeRawLiterals(final ByteBuffer inputBase, final int inputAddress, final int inputLimit) {
        int input = inputAddress;
        final int type = (inputBase.get(input) >> 2) & 0b11;

        final int literalSize;
        switch (type) {
            case 0:
            case 2:
                literalSize = (inputBase.get(input) & 0xFF) >>> 3;
                input++;
                break;
            case 1:
                literalSize = (inputBase.getShort(input) & 0xFFFF) >>> 4;
                input += 2;
                break;
            case 3:
                // read 3 little-endian bytes
                final int header = ((inputBase.get(input) & 0xFF) |
                        ((inputBase.getShort(input + 1) & 0xFFFF) << 8));

                literalSize = header >>> 4;
                input += 3;
                break;
            default:
                throw fail(input, "Invalid raw literals header encoding type");
        }

        verify(input + literalSize <= inputLimit, input, "Not enough input bytes");

        // Set literals pointer to [input, literalSize], but only if we can copy 8 bytes at a time during sequence decoding
        // Otherwise, copy literals into buffer that's big enough to guarantee that
        if (literalSize > (inputLimit - input) - SIZE_OF_LONG) {
            literalsBase = ByteBufferWrap(literals);
            literalsAddress = 0;
            literalsLimit = literalSize;

            System.arraycopy(inputBase.array(), input, literalsBase.array(), literalsAddress, literalSize);
            Arrays.fill(literals, literalSize, literalSize + SIZE_OF_LONG, (byte) 0);
        } else {
            literalsBase = inputBase;
            literalsAddress = input;
            literalsLimit = literalsAddress + literalSize;
        }
        input += literalSize;

        return (int) (input - inputAddress);
    }