Class Fory

java/fory-core/src/main/java/org/apache/fory/Fory.java:77–719

Cross-language header layout: 1-byte bitmap. Bit 0: xlang flag, Bit 1: out-of-band flag, Bits 2-7 reserved. serialize/deserialize are the root object APIs. Nested serialization and deserialization go through WriteContext and ReadContext.

 * through {@link WriteContext} and {@link ReadContext}.
 */
@NotThreadSafe
public final class Fory implements BaseFory {
  private static final Logger LOG = LoggerFactory.getLogger(Fory.class);

  public static final byte NULL_FLAG = -3;
  // This flag indicates that object is a not-null value.
  // We don't use another byte to indicate REF, so that we can save one byte.
  public static final byte REF_FLAG = -2;
  // this flag indicates that the object is a non-null value.
  public static final byte NOT_NULL_VALUE_FLAG = -1;
  // this flag indicates that the object is a referencable and first write.
  public static final byte REF_VALUE_FLAG = 0;
  public static final byte NOT_SUPPORT_XLANG = 0;
  private static final byte isCrossLanguageFlag = 1;
  private static final byte isOutOfBandFlag = 1 << 1;
  private static final byte reservedBitmapFlags = (byte) ~0b11;

  private final Config config;
  private final TypeResolver typeResolver;
  private final SharedRegistry sharedRegistry;
  private final ClassLoader classLoader;
  private final JITContext jitContext;
  private final WriteContext writeContext;
  private final ReadContext readContext;
  private final CopyContext copyContext;
  private final IdentityHashMap<ForyModule, Boolean> installedModules = new IdentityHashMap<>();
  private final byte headerBitmap;
  private MemoryBuffer buffer;

  private static String[] splitRegistrationName(String name) {
    Preconditions.checkNotNull(name);
    String namespace = "";
    String typeName = name;
    int idx = name.lastIndexOf('.');
    if (idx >= 0) {
      namespace = name.substring(0, idx);
      typeName = name.substring(idx + 1);
    }
    Preconditions.checkArgument(!typeName.isEmpty(), "Name must include a non-empty type name");
    return new String[] {namespace, typeName};
  }

  public Fory(ForyBuilder builder, ClassLoader classLoader) {
    this(builder, classLoader, null);
  }

  public Fory(ForyBuilder builder, ClassLoader classLoader, SharedRegistry sharedRegistry) {
    // Prefer the explicit constructor argument over retaining loader state on the builder used to
    // create thread-safe factories.
    config = new Config(builder);
    if (sharedRegistry == null) {
      sharedRegistry = new SharedRegistry();
    }
    sharedRegistry.setRemoteSchemaLimits(
        config.maxSchemaVersionsPerType(), config.maxAverageSchemaVersionsPerType());
    if (classLoader == null) {
      classLoader = Thread.currentThread().getContextClassLoader();
      if (classLoader == null) {