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/**
* This file is part of ObjectFabric (http://objectfabric.org).
*
* ObjectFabric is licensed under the Apache License, Version 2.0, the terms
* of which may be found at http://www.apache.org/licenses/LICENSE-2.0.html.
*
* Copyright ObjectFabric Inc.
*
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
package org.objectfabric;
import org.objectfabric.Continuation.ByteBox;
/**
* Reads and writes objects of unknown types.
*/
final class UnknownObjectSerializer {
static final byte NULL = Immutable.COUNT;
private static final byte REMOVAL = Immutable.COUNT + 1;
private static final byte CUSTOM = Immutable.COUNT + 2;
private static final byte MAX = CUSTOM;
static {
if (Debug.ENABLED)
Debug.assertion(MAX < Writer.IMMUTABLE_MAX_COUNT);
}
private UnknownObjectSerializer() {
throw new IllegalStateException();
}
// TODO: hash map of serializers based on class?
@SuppressWarnings("fallthrough")
static void write(ImmutableWriter writer, Object object) {
if (Debug.ENABLED)
Debug.assertion(!(object instanceof TObject.Version));
if (object instanceof TObject) {
((Writer) writer).writeTObject((TObject) object);
return;
}
boolean writtenCode = false;
byte[] bytes = null;
boolean resumed = false;
if (writer.interrupted()) {
writtenCode = writer.resumeBoolean();
bytes = (byte[]) writer.resume();
resumed = true;
}
if (!writtenCode) {
if (!writer.canWriteByte()) {
writer.interrupt(bytes);
writer.interruptBoolean(false);
return;
}
}
if (object == null) {
writer.writeByte(NULL, Writer.DEBUG_TAG_CODE);
return;
}
if (object == TKeyedEntry.REMOVAL) {
writer.writeByte(REMOVAL, Writer.DEBUG_TAG_CODE);
return;
}
if (object instanceof String) {
if (!writtenCode)
writer.writeByte((byte) Immutable.STRING_INDEX, Writer.DEBUG_TAG_CODE);
writer.writeString((String) object);
if (writer.interrupted()) {
writer.interrupt(bytes);
writer.interruptBoolean(true);
}
return;
}
if (object instanceof java.util.Date) {
if (!writtenCode)
writer.writeByte((byte) Immutable.DATE_INDEX, Writer.DEBUG_TAG_CODE);
if (!writer.canWriteDate()) {
writer.interrupt(bytes);
writer.interruptBoolean(true);
return;
}
writer.writeDate((java.util.Date) object);
return;
}
if (object instanceof byte[]) {
if (!writtenCode)
writer.writeByte((byte) Immutable.BINARY_INDEX, Writer.DEBUG_TAG_CODE);
writer.writeBinary((byte[]) object);
if (writer.interrupted()) {
writer.interrupt(bytes);
writer.interruptBoolean(true);
}
return;
}
if (object instanceof Integer) {
if (!writtenCode)
writer.writeByte((byte) Immutable.INTEGER_INDEX, Writer.DEBUG_TAG_CODE);
if (!writer.canWriteInteger()) {
writer.interrupt(bytes);
writer.interruptBoolean(true);
return;
}
writer.writeInteger(((Integer) object).intValue());
return;
}
if (object instanceof Long) {
if (!writtenCode)
writer.writeByte((byte) Immutable.LONG_INDEX, Writer.DEBUG_TAG_CODE);
if (!writer.canWriteLong()) {
writer.interrupt(bytes);
writer.interruptBoolean(true);
return;
}
writer.writeLong(((Long) object).longValue());
return;
}
if (object instanceof Float) {
if (!writtenCode)
writer.writeByte((byte) Immutable.FLOAT_INDEX, Writer.DEBUG_TAG_CODE);
if (!writer.canWriteFloat()) {
writer.interrupt(bytes);
writer.interrupt(true);
return;
}
writer.writeFloat(((Float) object).floatValue());
return;
}
if (object instanceof Double) {
if (!writtenCode)
writer.writeByte((byte) Immutable.DOUBLE_INDEX, Writer.DEBUG_TAG_CODE);
if (!writer.canWriteDouble()) {
writer.interrupt(bytes);
writer.interrupt(true);
return;
}
writer.writeDouble(((Double) object).doubleValue());
return;
}
if (object instanceof java.math.BigInteger) {
if (!writtenCode)
writer.writeByte((byte) Immutable.BIG_INTEGER_INDEX, Writer.DEBUG_TAG_CODE);
writer.writeBigInteger((java.math.BigInteger) object);
if (writer.interrupted()) {
writer.interrupt(bytes);
writer.interruptBoolean(true);
}
return;
}
if (object instanceof java.math.BigDecimal) {
if (!writtenCode)
writer.writeByte((byte) Immutable.DECIMAL_INDEX, Writer.DEBUG_TAG_CODE);
writer.writeDecimal((java.math.BigDecimal) object);
if (writer.interrupted()) {
writer.interrupt(bytes);
writer.interruptBoolean(true);
}
return;
}
if (object instanceof Boolean) {
if (!writtenCode)
writer.writeByte((byte) Immutable.BOOLEAN_INDEX, Writer.DEBUG_TAG_CODE);
if (!writer.canWriteBoolean()) {
writer.interrupt(bytes);
writer.interruptBoolean(true);
return;
}
writer.writeBoolean(((Boolean) object).booleanValue());
return;
}
if (object instanceof Byte) {
if (!writtenCode)
writer.writeByte((byte) Immutable.BYTE_INDEX, Writer.DEBUG_TAG_CODE);
if (!writer.canWriteByte()) {
writer.interrupt(bytes);
writer.interruptBoolean(true);
return;
}
writer.writeByte(((Byte) object).byteValue());
return;
}
if (object instanceof Short) {
if (!writtenCode)
writer.writeByte((byte) Immutable.SHORT_INDEX, Writer.DEBUG_TAG_CODE);
if (!writer.canWriteShort()) {
writer.interrupt(bytes);
writer.interruptBoolean(true);
return;
}
writer.writeShort(((Short) object).shortValue());
return;
}
if (object instanceof Character) {
if (!writtenCode)
writer.writeByte((byte) Immutable.CHARACTER_INDEX, Writer.DEBUG_TAG_CODE);
if (!writer.canWriteCharacter()) {
writer.interrupt(bytes);
writer.interruptBoolean(true);
return;
}
writer.writeCharacter(((Character) object).charValue());
return;
}
Serializer serializer = Workspace.getSerializer();
if (serializer == null)
throw new RuntimeException(Strings.UNSUPPORTED_TYPE + object);
if (!writtenCode)
writer.writeByte(CUSTOM, Writer.DEBUG_TAG_CODE);
if (!resumed)
bytes = serializer.serialize(object);
writer.writeBinary(bytes);
if (writer.interrupted()) {
writer.interrupt(bytes);
writer.interruptBoolean(true);
}
}
static Object read(ImmutableReader reader) {
byte code;
ByteBox resumed = null;
if (reader.interrupted())
resumed = (ByteBox) reader.resume();
if (resumed != null)
code = resumed.Value;
else {
if (!reader.canReadByte()) {
reader.interrupt(null);
return null;
}
code = reader.readByte(Writer.DEBUG_TAG_CODE);
}
Object value = read(reader, code);
if (reader.interrupted()) {
ByteBox box = new ByteBox();
box.Value = code;
reader.interrupt(box);
}
return value;
}
private static Object read(ImmutableReader reader, byte code) {
if ((code & Writer.VALUE_IS_TOBJECT) != 0)
return ((Reader) reader).readTObject(code);
if (reader.interrupted())
reader.resume();
switch (code) {
case Immutable.BOOLEAN_INDEX: {
if (!reader.canReadBoolean()) {
reader.interrupt(null);
return null;
}
return reader.readBoolean();
}
case Immutable.BOOLEAN_BOXED_INDEX:
throw new IllegalStateException();
case Immutable.BYTE_INDEX: {
if (!reader.canReadByte()) {
reader.interrupt(null);
return null;
}
return reader.readByte();
}
case Immutable.BYTE_BOXED_INDEX:
throw new IllegalStateException();
case Immutable.CHARACTER_INDEX: {
if (!reader.canReadCharacter()) {
reader.interrupt(null);
return null;
}
return reader.readCharacter();
}
case Immutable.CHARACTER_BOXED_INDEX:
throw new IllegalStateException();
case Immutable.SHORT_INDEX: {
if (!reader.canReadShort()) {
reader.interrupt(null);
return null;
}
return reader.readShort();
}
case Immutable.SHORT_BOXED_INDEX:
throw new IllegalStateException();
case Immutable.INTEGER_INDEX: {
if (!reader.canReadInteger()) {
reader.interrupt(null);
return null;
}
return reader.readInteger();
}
case Immutable.INTEGER_BOXED_INDEX:
throw new IllegalStateException();
case Immutable.LONG_INDEX: {
if (!reader.canReadLong()) {
reader.interrupt(null);
return null;
}
return reader.readLong();
}
case Immutable.LONG_BOXED_INDEX:
throw new IllegalStateException();
case Immutable.FLOAT_INDEX: {
if (!reader.canReadFloat()) {
reader.interrupt(null);
return null;
}
return reader.readFloat();
}
case Immutable.FLOAT_BOXED_INDEX:
throw new IllegalStateException();
case Immutable.DOUBLE_INDEX: {
if (!reader.canReadDouble()) {
reader.interrupt(null);
return null;
}
return reader.readDouble();
}
case Immutable.DOUBLE_BOXED_INDEX:
throw new IllegalStateException();
case Immutable.STRING_INDEX: {
String value = reader.readString();
if (reader.interrupted())
reader.interrupt(null);
return value;
}
case Immutable.DATE_INDEX: {
if (!reader.canReadDate()) {
reader.interrupt(null);
return null;
}
return reader.readDate();
}
case Immutable.BIG_INTEGER_INDEX: {
java.math.BigInteger value = reader.readBigInteger();
if (reader.interrupted())
reader.interrupt(null);
return value; // BigInteger
}
case Immutable.DECIMAL_INDEX: {
java.math.BigDecimal value = reader.readDecimal();
if (reader.interrupted())
reader.interrupt(null);
return value; // BigDecimal
}
case Immutable.BINARY_INDEX: {
byte[] value = reader.readBinary();
if (reader.interrupted())
reader.interrupt(null);
return value;
}
case NULL:
return null;
case REMOVAL:
return TKeyedEntry.REMOVAL;
case CUSTOM: {
byte[] value = reader.readBinary();
if (reader.interrupted())
reader.interrupt(null);
Serializer serializer = Workspace.getSerializer();
if (serializer == null)
throw new RuntimeException(Strings.MISSING_CUSTOM_SERIALIZER);
return serializer.deserialize(value);
}
default:
throw new IllegalStateException();
}
}
}