/// <summary>
/// 序列化对象，并将序列化数据写入指定的缓冲区中
/// </summary>
/// <typeparam name="T">序列化的对象类型</typeparam>
/// <param name="obj">被序列化的对象</param>
/// <param name="buffer">用于接受序列化数据的缓冲区</param>
/// <param name="index"><paramref name="buffer"/>开始写入的索引</param>
/// <param name="encoding">序列化使用的字符编码</param>
/// <param name="endian">序列化使用的字节序</param>
/// <returns>序列化数据的大小</returns>
/// <exception cref="ArgumentException">字节数组容量不足</exception>
public static int Serialize <T>(T obj, byte[] buffer, int index, Encoding encoding = Encoding.UTF8, Endian endian = Endian.BigEndian)
{
InternalTypeCache <T> .OnBeforeSerializationCallbacks?.Invoke(ref obj);
int memSize = InternalTypeCache <T> .ApproximateMemorySize;
NativeMemory mem = NativeMemory.Allocate(ref memSize);
AccelWriter writer = new AccelWriter(&mem, encoding, endian == Endian.LittleEndian);
writer.WriteGlobalConfig(encoding, endian);
try
{
InternalTypeCache <T> .Serializer.Serialize(obj, ref writer);
return(mem.CopyToArray(writer.ByteCount, buffer, index));
}
finally
{
mem.Dispose();
}
}
/// <summary>
/// 序列化对象，并返回序列化数据
/// </summary>
/// <typeparam name="T">序列化的对象类型</typeparam>
/// <param name="obj">被序列化的对象</param>
/// <param name="encoding">序列化使用的字符编码</param>
/// <param name="endian">序列化使用的字节序</param>
/// <returns>保存了对象序列化数据的一块非托管缓冲区</returns>
public static NativeBuffer Serialize <T>(T obj, Encoding encoding = Encoding.UTF8, Endian endian = Endian.BigEndian)
{
InternalTypeCache <T> .OnBeforeSerializationCallbacks?.Invoke(ref obj);
int memSize = InternalTypeCache <T> .ApproximateMemorySize;
NativeMemory mem = NativeMemory.Allocate(ref memSize);
AccelWriter writer = new AccelWriter(&mem, encoding, endian == Endian.LittleEndian);
writer.WriteGlobalConfig(encoding, endian);
try
{
InternalTypeCache <T> .Serializer.Serialize(obj, ref writer);
return(mem.ToNativeBufferNoCopy(writer.ByteCount));
}
catch
{
mem.Dispose();
throw;
}
}
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="index"></param>
/// <param name="value"></param>
public void WriteValue <T>(int index, T value)
{
ITypeSerializer <T> serializer = InternalTypeCache <T> .Serializer;
if (serializer is IBuiltinTypeSerializer)
{
Index = index;
serializer.Serialize(value, ref this);
}
else
{
int memSize = InternalTypeCache <T> .ApproximateMemorySize;
NativeMemory mem = NativeMemory.Allocate(ref memSize);
AccelWriter writer = new AccelWriter(&mem, m_Encoding, m_IsLittleEndian);
try
{
serializer.Serialize(value, ref writer);
int byteCount = writer.m_ByteCount;
ObjectType type = GetObjectTypeByLength(byteCount);
WriteTag(index, type);
if (type == ObjectType.LengthPrefixed)
{
WriteUInt32Variant((uint)byteCount);
}
WriteBytes(writer.m_Memory->GetPointer(), byteCount);
}
finally
{
mem.Dispose();
}
}
}
