package co.nstant.in.cbor.decoder;
import java.io.InputStream;
import java.math.BigInteger;
import co.nstant.in.cbor.CborDecoder;
import co.nstant.in.cbor.CborException;
import co.nstant.in.cbor.model.NegativeInteger;
public class NegativeIntegerDecoder extends AbstractDecoder<NegativeInteger> {
private static final BigInteger MINUS_ONE = BigInteger.valueOf(-1);
public NegativeIntegerDecoder(CborDecoder decoder, InputStream inputStream) {
super(decoder, inputStream);
}
@Override
public NegativeInteger decode(int initialByte) throws CborException {
return new NegativeInteger(
MINUS_ONE.subtract(getLengthAsBigInteger(initialByte)));
}
}