/// <summary>
/// Finds the appriopriate encoder within specified category
/// </summary>
/// <param name="o">Object to find the encoder for</param>
/// <param name="category">Category of encoders to consider</param>
/// <returns>An encoder method appropriate for that object or null if not found</returns>
protected virtual BinaryEncoderData GetSpecificEncoder(object o, ConverterCategory category)
{
BinaryEncoderMethod encoder;
Func <object, IEnumerable <byte> > encoderMethod;
switch (category)
{
case ConverterCategory.ANY:
return(GetEncoder(o));
case ConverterCategory.CUSTOM:
encoder = GetCustomEncoder(o.GetType());
return((encoder == null) ? null : new BinaryEncoderData(encoder.Encoder));
case ConverterCategory.CUSTOM_PREDEFINED:
encoder = GetPredefinedCustomEncoder(o.GetType());
return((encoder == null) ? null : new BinaryEncoderData(encoder.Encoder));
case ConverterCategory.CUSTOM_FOR_CLASS:
encoderMethod = GetCustomClassEncoder(o);
return((encoderMethod == null) ? null : new BinaryEncoderData(encoderMethod));
case ConverterCategory.GLOBAL_FOR_CLASS:
encoderMethod = GetGlobalClassEncoder(o.GetType());
return((encoderMethod == null) ? null : new BinaryEncoderData(encoderMethod));
case ConverterCategory.DEFAULT:
encoder = GetDefaultEncoder(o.GetType());
return((encoder == null) ? null : new BinaryEncoderData(encoder.Encoder));
case ConverterCategory.DEFAULT_PREDEFINED:
encoder = GetPredefinedDefaultEncoder(o.GetType());
return((encoder == null) ? null : new BinaryEncoderData(encoder.Encoder));
case ConverterCategory.PRIMITIVE:
if (o.GetType().IsSerializable)
{
return(new BinaryEncoderData(PrimitiveTypeEncoder));
}
return(null);
case ConverterCategory.SERIALIZABLE:
if (o.GetType().IsSerializable)
{
return(new BinaryEncoderData(SerializableTypeEncoder));
}
return(null);
case ConverterCategory.COMPLEX:
if (!o.GetType().IsPrimitive)
{
return(new BinaryEncoderData(ComplexTypeEncoder));
}
return(null);
default:
throw new NotImplementedException("Provided category was not implemented");
}
}
public virtual BinaryCodeBuilder Encode(object o, ConverterCategory converterCategory = ConverterCategory.ANY, BinaryCodeBuilder builder = null)
{
if (builder == null)
{
builder = new BinaryCodeBuilder();
}
BinaryEncoderData encoderData = GetSpecificEncoder(o, converterCategory);
IEnumerable <byte> encodedObject = null;
if (encoderData.ConverterType == ConverterType.NULL)
{
builder.AppendBit(0);
builder.AppendBit(0);
return(builder);
}
else if (encoderData.ConverterType == ConverterType.EXCLUSIVE)
{
encodedObject = encoderData.Encoder.Invoke(o);
builder.AppendBit(0);
builder.AppendBit(1);
byte[] typeBytes = EncodeType(o.GetType());
builder.Append(EncodeLength((uint)typeBytes.Length));
builder.AppendBytes(typeBytes);
}
else
{
encodedObject = encoderData.Encoder.Invoke(o);
builder.AppendBit(1);
if (encoderData.ConverterType == ConverterType.INCLUSIVE_SERIALIZABLE)
{
// Inclusive serializable, no need to encode type
builder.AppendBit(0);
}
else
{
// Inclusive primitive, no need to encode type
builder.AppendBit(1);
}
}
uint length = (uint)encodedObject.Count();
builder.Append(EncodeLength(length));
builder.AppendBytes(encodedObject);
return(builder);
}
public virtual object Decode(byte[] bytes, ConverterCategory converterCategory = ConverterCategory.ANY)
{
return(Decode(new BinaryCodeReader(bytes), converterCategory));
}
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)));
}
}
}
/// <summary>
/// Finds the appriopriate decoder within specified category
/// </summary>
/// <param name="o">Object to find the decoder for</param>
/// <param name="category">Category of decoders to consider</param>
/// <returns>An encoder method appropriate for that object or null if not found</returns>
protected virtual BinaryDecoderData GetSpecificDecoder(object o, ConverterCategory category, ConverterCategory[] disallowed = null)
{
BinaryDecoderMethod decoder;
Func <IEnumerable <byte>, object> decoderMethod;
if (disallowed == null)
{
disallowed = new ConverterCategory[] { }
}
;
switch (category)
{
case ConverterCategory.ANY:
return(GetDecoder(o));
case ConverterCategory.CUSTOM:
decoder = GetCustomDecoder(o.GetType());
return((decoder == null && !disallowed.Contains(ConverterCategory.CUSTOM)) ? null : new BinaryDecoderData(decoder.Decoder));
case ConverterCategory.CUSTOM_PREDEFINED:
decoder = GetPredefinedCustomDecoder(o.GetType());
return((decoder == null && !disallowed.Contains(ConverterCategory.CUSTOM_PREDEFINED)) ? null : new BinaryDecoderData(decoder.Decoder));
case ConverterCategory.CUSTOM_FOR_CLASS:
decoderMethod = GetCustomClassEncoder(o);
return((decoderMethod == null && !disallowed.Contains(ConverterCategory.CUSTOM_FOR_CLASS)) ? null : new BinaryDecoderData(decoderMethod));
case ConverterCategory.GLOBAL_FOR_CLASS:
decoderMethod = GetGlobalClassDecoder(o.GetType());
return((decoderMethod == null && !disallowed.Contains(ConverterCategory.GLOBAL_FOR_CLASS)) ? null : new BinaryDecoderData(decoderMethod));
case ConverterCategory.DEFAULT:
decoder = GetDefaultDecoder(o.GetType());
return((decoder == null && !disallowed.Contains(ConverterCategory.DEFAULT)) ? null : new BinaryDecoderData(decoder.Decoder));
case ConverterCategory.DEFAULT_PREDEFINED:
decoder = GetPredefinedDefaultDecoder(o.GetType());
return((decoder == null && !disallowed.Contains(ConverterCategory.DEFAULT_PREDEFINED)) ? null : new BinaryDecoderData(decoder.Decoder));
case ConverterCategory.PRIMITIVE:
if (o.GetType().IsPrimitive&& !disallowed.Contains(ConverterCategory.PRIMITIVE))
{
return(new BinaryDecoderData(PrimitiveTypeDecoder));
}
return(null);
case ConverterCategory.SERIALIZABLE:
if (o.GetType().IsSerializable&& !disallowed.Contains(ConverterCategory.SERIALIZABLE))
{
return(new BinaryDecoderData(SerializableTypeDecoder));
}
return(null);
case ConverterCategory.COMPLEX:
if (!o.GetType().IsPrimitive&& !disallowed.Contains(ConverterCategory.COMPLEX))
{
return(new BinaryDecoderData(ComplexTypeDecoder));
}
return(null);
default:
throw new NotImplementedException("Provided category was not implemented");
}
}
/// <summary>
/// Finds the appropriate decoder for provided object
/// </summary>
/// <param name="o">Object to find the decoder for</param>
/// <returns>An decoder method appropriate for that object</returns>
protected virtual BinaryDecoderData GetDecoder(object o, ConverterCategory[] disallowed = null)
{
Type objectType = o.GetType();
BinaryDecoderMethod decoder;
Func <IEnumerable <byte>, object> decoderMethod;
if (disallowed == null)
{
disallowed = new ConverterCategory[] { }
}
;
// Step 1. Looking for a custom converter added manually to the converters list
decoder = GetCustomDecoder(objectType);
if (decoder != null && !disallowed.Contains(ConverterCategory.CUSTOM))
{
// Found the appropriate decoder
return(new BinaryDecoderData(decoder.Decoder));
}
// Step 2. Looking for a custom converter defined within the converter class
decoder = GetPredefinedCustomDecoder(objectType);
if (decoder != null && !disallowed.Contains(ConverterCategory.CUSTOM_PREDEFINED))
{
// Found the appropriate decoder
return(new BinaryDecoderData(decoder.Decoder));
}
// Step 3. Looking for a custom converter defined within the converted class
decoderMethod = GetCustomClassDecoder(o);
if (decoderMethod != null && !disallowed.Contains(ConverterCategory.CUSTOM_FOR_CLASS))
{
return(new BinaryDecoderData(decoderMethod));
}
// Step 4. Looking for a global converter defined for the class
decoderMethod = GetGlobalClassDecoder(objectType);
if (decoderMethod != null && !disallowed.Contains(ConverterCategory.GLOBAL_FOR_CLASS))
{
return(new BinaryDecoderData(decoderMethod));
}
// Step 5. Looking for a default converter added manually to the converters list
decoder = GetDefaultDecoder(objectType);
if (decoder != null && !disallowed.Contains(ConverterCategory.DEFAULT))
{
return(new BinaryDecoderData(decoder.Decoder));
}
// Step 6. Looking for a default converter defined within the converter class
decoder = GetPredefinedDefaultDecoder(objectType);
if (decoder != null && !disallowed.Contains(ConverterCategory.DEFAULT_PREDEFINED))
{
return(new BinaryDecoderData(decoder.Decoder));
}
// Step 7. Attempting a converter for a primitive type
if (objectType.IsPrimitive && !disallowed.Contains(ConverterCategory.PRIMITIVE))
{
return(new BinaryDecoderData(PrimitiveTypeDecoder, ConverterType.INCLUSIVE_PRIMITIVE));
}
// Step 8. Attempting a converter for a serializable type
if (objectType.IsSerializable && !disallowed.Contains(ConverterCategory.SERIALIZABLE))
{
return(new BinaryDecoderData(SerializableTypeDecoder, ConverterType.INCLUSIVE_SERIALIZABLE));
}
// Step 9. None of the above is valid, apply the default decoder
if (!disallowed.Contains(ConverterCategory.COMPLEX))
{
return(new BinaryDecoderData(ComplexTypeDecoder));
}
return(null);
}
public Converter(ConverterCategory category)
{
ConverterType = category;
}
