/// <summary>
/// Reads a basic value from the stream.
/// </summary>
/// <param name="typeInfo">The type to be deserialized.</param>
/// <param name="reader">The stream containing serialized data.</param>
/// <param name="baseValue">The default value for this field.</param>
/// <returns>The deserialized value.</returns>
internal static object ReadValue(TypeInfo typeInfo, IReader reader, object baseValue)
{
object result = null;
int n;
var info = typeInfo.info & SerializationTypeInfo.VALUE_MASK;
switch (info)
{
case SerializationTypeInfo.UserDefined:
n = reader.ReadInt32();
if (n >= 0)
{
var itemType = typeInfo.type;
if (baseValue == null)
{
result = ConstructorDelegator.CreateInstance(itemType);
}
else
{
result = baseValue;
}
FastSerializationManager.GetFastDeserializationMapping(itemType).
Deserialize(result, reader);
}
break;
case SerializationTypeInfo.SByte:
result = reader.ReadSByte();
break;
case SerializationTypeInfo.Byte:
result = reader.ReadByte();
break;
case SerializationTypeInfo.Boolean:
result = reader.ReadByte() == 1;
break;
case SerializationTypeInfo.Int16:
result = reader.ReadInt16();
break;
case SerializationTypeInfo.UInt16:
result = reader.ReadUInt16();
break;
case SerializationTypeInfo.Int32:
result = reader.ReadInt32();
break;
case SerializationTypeInfo.UInt32:
result = reader.ReadUInt32();
break;
case SerializationTypeInfo.Int64:
result = reader.ReadInt64();
break;
case SerializationTypeInfo.UInt64:
result = reader.ReadUInt64();
break;
case SerializationTypeInfo.Single:
result = reader.ReadSingle();
break;
case SerializationTypeInfo.Double:
result = reader.ReadDouble();
break;
case SerializationTypeInfo.String:
result = reader.ReadKleiString();
break;
case SerializationTypeInfo.Enumeration:
result = Enum.ToObject(typeInfo.type, reader.ReadInt32());
break;
case SerializationTypeInfo.Vector2I:
result = reader.ReadVector2I();
break;
case SerializationTypeInfo.Vector2:
result = reader.ReadVector2();
break;
case SerializationTypeInfo.Vector3:
result = reader.ReadVector3();
break;
case SerializationTypeInfo.Array:
reader.ReadInt32();
result = ReadArray(typeInfo, reader, true);
break;
case SerializationTypeInfo.Pair:
n = reader.ReadInt32();
if (n >= 0)
{
TypeInfo keyType = typeInfo.subTypes[0], valueType = typeInfo.subTypes[1];
object key = ReadValue(keyType, reader, null);
object value = ReadValue(valueType, reader, null);
result = KeyValuePairDelegator.GetDelegates(keyType.type, valueType.type).
CreateInstance(key, value);
}
break;
case SerializationTypeInfo.Dictionary:
reader.ReadInt32();
n = reader.ReadInt32();
if (n >= 0)
{
// Preallocate dictionary to correct size
result = DictionaryDelegator.CreateInstance(typeInfo.
genericInstantiationType, n);
var dict = result as System.Collections.IDictionary;
var keyType = typeInfo.subTypes[0];
var valueType = typeInfo.subTypes[1];
var values = ListPool <object, FastDeserializationMapping> .Allocate();
for (int i = 0; i < n; i++)
{
values.Add(ReadValue(valueType, reader, null));
}
for (int i = 0; i < n; i++)
{
dict.Add(ReadValue(keyType, reader, null), values[i]);
}
values.Recycle();
}
break;
case SerializationTypeInfo.HashSet:
reader.ReadInt32();
result = ReadArray(typeInfo, reader, false);
if (result != null)
{
result = CollectionDelegator.CreateInstance(typeInfo.
genericInstantiationType, result);
}
break;
case SerializationTypeInfo.List:
case SerializationTypeInfo.Queue:
reader.ReadInt32();
result = ReadArray(typeInfo, reader, true);
if (result != null)
{
// Due to how POD lists/queues are encoded, must go through a temporary
// array to make best usage of ReadArrayFast, sorry memory usage
result = CollectionDelegator.CreateInstance(typeInfo.
genericInstantiationType, result);
}
break;
case SerializationTypeInfo.Colour:
result = reader.ReadColour();
break;
default:
throw new ArgumentException("Unknown type " + info);
}
return(result);
}
/// <summary>
/// Serializes a value to the specified stream.
/// </summary>
/// <param name="writer">The stream where the data will be serialized.</param>
/// <param name="typeInfo">The type to be serialized.</param>
/// <param name="data">The data to serialize.</param>
public static void WriteValue(BinaryWriter writer, TypeInfo typeInfo, object data)
{
switch (typeInfo.info & SerializationTypeInfo.VALUE_MASK)
{
case SerializationTypeInfo.UserDefined:
if (data != null)
{
long startPos = writer.BaseStream.Position;
writer.Write(0);
long basePos = writer.BaseStream.Position;
GetFastSerializationTemplate(typeInfo.type).SerializeData(data, writer);
WriteLength(writer, startPos, basePos);
}
else
{
writer.Write(-1);
}
break;
case SerializationTypeInfo.SByte:
writer.Write((sbyte)data);
break;
case SerializationTypeInfo.Byte:
writer.Write((byte)data);
break;
case SerializationTypeInfo.Boolean:
writer.Write((byte)((data is bool which && which) ? 1 : 0));
break;
case SerializationTypeInfo.Int16:
writer.Write((short)data);
break;
case SerializationTypeInfo.UInt16:
writer.Write((ushort)data);
break;
case SerializationTypeInfo.Int32:
writer.Write((int)data);
break;
case SerializationTypeInfo.UInt32:
writer.Write((uint)data);
break;
case SerializationTypeInfo.Int64:
writer.Write((long)data);
break;
case SerializationTypeInfo.UInt64:
writer.Write((ulong)data);
break;
case SerializationTypeInfo.Single:
writer.WriteSingleFast((float)data);
break;
case SerializationTypeInfo.Double:
writer.Write((double)data);
break;
case SerializationTypeInfo.String:
writer.WriteKleiString((string)data);
break;
case SerializationTypeInfo.Enumeration:
writer.Write((int)data);
break;
case SerializationTypeInfo.Vector2I:
if (data is Vector2I vector2i)
{
writer.Write(vector2i.x);
writer.Write(vector2i.y);
}
else
{
writer.Write(0);
writer.Write(0);
}
break;
case SerializationTypeInfo.Vector2:
if (data is Vector2 vector2)
{
writer.WriteSingleFast(vector2.x);
writer.WriteSingleFast(vector2.y);
}
else
{
writer.WriteSingleFast(0.0f);
writer.WriteSingleFast(0.0f);
}
break;
case SerializationTypeInfo.Vector3:
if (data is Vector3 vector3)
{
writer.WriteSingleFast(vector3.x);
writer.WriteSingleFast(vector3.y);
writer.WriteSingleFast(vector3.z);
}
else
{
for (int i = 0; i < 3; i++)
{
writer.WriteSingleFast(0.0f);
}
}
break;
case SerializationTypeInfo.Array:
if (data is Array array)
{
var elementType = typeInfo.subTypes[0];
int n = array.Length;
long startPos = writer.BaseStream.Position;
writer.Write(0);
writer.Write(n);
long basePos = writer.BaseStream.Position;
if (Helper.IsPOD(elementType.info))
{
WriteArrayPOD(writer, elementType, array);
}
else if (Helper.IsValueType(elementType.info))
{
var template = GetFastSerializationTemplate(elementType.type);
for (int i = 0; i < n; i++)
{
template.SerializeData(array.GetValue(i), writer);
}
}
else
{
for (int i = 0; i < n; i++)
{
WriteValue(writer, elementType, array.GetValue(i));
}
}
WriteLength(writer, startPos, basePos);
}
else
{
writer.Write(0);
writer.Write(-1);
}
break;
case SerializationTypeInfo.Pair:
if (data != null)
{
TypeInfo keyType = typeInfo.subTypes[0], valueType = typeInfo.subTypes[1];
var delegator = KeyValuePairDelegator.GetDelegates(keyType.type,
valueType.type);
long startPos = writer.BaseStream.Position;
writer.Write(0);
long basePos = writer.BaseStream.Position;
WriteValue(writer, keyType, delegator.GetKey(data));
WriteValue(writer, valueType, delegator.GetValue(data));
WriteLength(writer, startPos, basePos);
}
else
{
writer.Write(4);
writer.Write(-1);
}
break;
case SerializationTypeInfo.Dictionary:
if (data is IDictionary dict)
{
TypeInfo keyType = typeInfo.subTypes[0], valueType = typeInfo.subTypes[1];
long startPos = writer.BaseStream.Position;
writer.Write(0);
writer.Write(dict.Count);
long basePos = writer.BaseStream.Position;
foreach (object value in dict.Values)
{
WriteValue(writer, valueType, value);
}
foreach (object key in dict.Keys)
{
WriteValue(writer, keyType, key);
}
WriteLength(writer, startPos, basePos);
}
else
{
writer.Write(0);
writer.Write(-1);
}
break;
case SerializationTypeInfo.List:
case SerializationTypeInfo.Queue:
if (data is ICollection list)
{
var elementType = typeInfo.subTypes[0];
long startPos = writer.BaseStream.Position;
writer.Write(0);
writer.Write(list.Count);
long basePos = writer.BaseStream.Position;
if (Helper.IsPOD(elementType.info))
{
WriteListPOD(writer, elementType, list);
}
else if (Helper.IsValueType(elementType.info))
{
var template = GetFastSerializationTemplate(elementType.type);
foreach (object element in list)
{
template.SerializeData(element, writer);
}
}
else
{
foreach (object element in list)
{
WriteValue(writer, elementType, element);
}
}
WriteLength(writer, startPos, basePos);
}
else
{
writer.Write(0);
writer.Write(-1);
}
break;
case SerializationTypeInfo.HashSet:
if (data is IEnumerable enumerable)
{
var elementType = typeInfo.subTypes[0];
long startPos = writer.BaseStream.Position;
writer.Write(0);
writer.Write(0);
long basePos = writer.BaseStream.Position;
int n = 0;
// No special case handling for POD for hash sets
if (Helper.IsValueType(elementType.info))
{
var template = GetFastSerializationTemplate(elementType.type);
foreach (object element in enumerable)
{
template.SerializeData(element, writer);
n++;
}
}
else
{
foreach (object element in enumerable)
{
WriteValue(writer, elementType, element);
n++;
}
}
// Element count must be written along with the length
long endPos = writer.BaseStream.Position;
writer.BaseStream.Position = startPos;
writer.Write((int)(endPos - basePos));
writer.Write(n);
writer.BaseStream.Position = endPos;
}
else
{
writer.Write(0);
writer.Write(-1);
}
break;
case SerializationTypeInfo.Colour:
if (data is Color color)
{
writer.Write((byte)(color.r * 255f));
writer.Write((byte)(color.g * 255f));
writer.Write((byte)(color.b * 255f));
writer.Write((byte)(color.a * 255f));
}
else
{
for (int i = 0; i < 4; i++)
{
writer.Write((byte)0);
}
}
break;
default:
throw new ArgumentException("Unable to serialize type: " + typeInfo.type.
FullName);
}
}
