protected virtual object ComplexTypeDecoder(IEnumerable <byte> bytes)
{
Type currentType = CurrentDecodedType;
object uninitialized = FormatterServices.GetUninitializedObject(currentType);
BinaryCodeReader reader = new BinaryCodeReader(bytes);
uint length;
string fieldName;
object value;
while (!reader.EndOfSource())
{
while (reader.ReadNextBit() == 1)
{
currentType = currentType.BaseType;
if (currentType == null)
{
// TODO: throw valid exception
}
}
length = DecodeLength(reader);
fieldName = DecodeFieldName(reader.ReadNextBytes(length));
var prop = currentType.GetField(
fieldName,
BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public
);
value = Decode(reader);
prop.SetValue(uninitialized, value);
}
return(uninitialized);
}
public void TestReadBytes()
{
var bytes = new byte[] { 113, 25, 45, 79, 13, 51 };
var reader = new BinaryCodeReader(bytes);
for (int i = 0; i < bytes.Length; i++)
{
Assert.AreEqual(bytes[i], reader.ReadNextByte());
}
}
protected uint DecodeLength(BinaryCodeReader reader)
{
int lengthSizeInBytes = (reader.ReadNextBit() + 1) + reader.ReadNextBit() * 2;
var lengthBytes = new byte[4] {
0, 0, 0, 0
};
for (int i = 0; i < lengthSizeInBytes; i++)
{
lengthBytes[i] = reader.ReadNextByte();
}
return(BitConverter.ToUInt32(lengthBytes, 0));
}
public void TestReadAfterMove()
{
var bytes = new byte[] { 117, 243, 11, 3, 57 };
var reader = new BinaryCodeReader(bytes);
reader.MoveBytePointer(1);
Assert.AreEqual(bytes[1], reader.ReadNextByte());
reader.MoveBytePointer(-1);
reader.MoveBitPointer(3);
Assert.AreEqual(126, reader.ReadNextByte());
reader.MoveBitPointer(5);
Assert.AreEqual(3, reader.ReadNextByte());
reader.MoveBytePointer(-4);
Assert.AreEqual(117, reader.ReadNextByte());
}
public void TestReadBits()
{
var bytes = new byte[] { 113, 11, 51 };
var bits = new byte[] {
1, 0, 0, 0, 1, 1, 1, 0,
1, 1, 0, 1, 0, 0, 0, 0,
1, 1, 0, 0, 1, 1, 0, 0
};
var reader = new BinaryCodeReader(bytes);
for (int i = 0; i < bits.Length; i++)
{
Assert.AreEqual(bits[i], reader.ReadNextBit());
}
}
public virtual object Decode(BinaryCodeReader bytes, ConverterCategory converterCategory = ConverterCategory.ANY)
{
byte tmpByte = bytes.ReadNextBit();
CurrentDecodedType = null;
if (tmpByte == 0)
{
tmpByte = bytes.ReadNextBit();
if (tmpByte == 0)
{
// Null
return(null);
}
else
{
// Exclusive
uint typeLength = DecodeLength(bytes);
Type decodedType = DecodeType(bytes.ReadNextBytes(typeLength));
CurrentDecodedType = decodedType;
object uninitialized = FormatterServices.GetUninitializedObject(decodedType);
var decoder = GetSpecificDecoder(
uninitialized,
converterCategory,
new ConverterCategory[] {
ConverterCategory.PRIMITIVE,
ConverterCategory.SERIALIZABLE // The only inclusive types when it comes to BinaryConverter
}
);
if (decoder != null)
{
uint length = DecodeLength(bytes);
object result = decoder.Decoder.Invoke(bytes.ReadNextBytes(length));
CurrentDecodedType = null;
return(result);
}
else
{
CurrentDecodedType = null;
throw new ArgumentException("Could not find proper decoder for that set of bytes within provided range. Type encoded as exclusive, of type " + decodedType.FullName);
}
}
}
else
{
tmpByte = bytes.ReadNextBit();
if (tmpByte == 0)
{
// Inclusive serializable
if (converterCategory != ConverterCategory.ANY && converterCategory != ConverterCategory.SERIALIZABLE)
{
throw new ArgumentException("Object is encoded as inclusive serializable, requested converter category not allowing for that kind of conversion");
}
uint length = DecodeLength(bytes);
return(SerializableTypeDecoder(bytes.ReadNextBytes(length)));
}
else
{
// Inclusive serializable
if (converterCategory != ConverterCategory.ANY && converterCategory != ConverterCategory.PRIMITIVE)
{
throw new ArgumentException("Object is encoded as inclusive primitive, requested converter category not allowing for that kind of conversion");
}
uint length = DecodeLength(bytes);
return(PrimitiveTypeDecoder(bytes.ReadNextBytes(length)));
}
}
}
