/// <summary>
/// Reads a <see cref="System.Decimal"/> value.
/// </summary>
/// <param name="stream">Stream to read the value from.</param>
/// <returns>The read value.</returns>
internal decimal ReadPrimitive_Decimal(Stream stream)
{
const int elementSize = sizeof(decimal);
int bytesRead = stream.Read(TempBuffer_Buffer, 0, elementSize);
if (bytesRead < elementSize)
{
throw new SerializationException("Unexpected end of stream.");
}
#if NETSTANDARD2_0 || NETSTANDARD2_1 || NET461
Buffer.BlockCopy(TempBuffer_Buffer, 0, TempBuffer_Int32, 0, elementSize);
if (mDeserializingLittleEndian != BitConverter.IsLittleEndian)
{
EndiannessHelper.SwapBytes(ref TempBuffer_Int32[0]);
EndiannessHelper.SwapBytes(ref TempBuffer_Int32[1]);
EndiannessHelper.SwapBytes(ref TempBuffer_Int32[2]);
EndiannessHelper.SwapBytes(ref TempBuffer_Int32[3]);
}
return(new decimal(TempBuffer_Int32));
#elif NET5_0_OR_GREATER
var intBuffer = MemoryMarshal.Cast <byte, int>(TempBuffer_Buffer.AsSpan(0, elementSize));
if (mDeserializingLittleEndian != BitConverter.IsLittleEndian)
{
EndiannessHelper.SwapBytes(ref intBuffer[0]);
EndiannessHelper.SwapBytes(ref intBuffer[1]);
EndiannessHelper.SwapBytes(ref intBuffer[2]);
EndiannessHelper.SwapBytes(ref intBuffer[3]);
}
return(new decimal(intBuffer));
#else
#error Unhandled .NET framework
#endif
}
/// <summary>
/// Reads a <see cref="System.DateTime"/> object.
/// </summary>
/// <param name="stream">Stream to read the DateTime object from.</param>
/// <returns>The read <see cref="System.DateTime"/> object.</returns>
internal DateTime ReadPrimitive_DateTime(Stream stream)
{
const int elementSize = sizeof(long); // binary representation of a DateTime
int bytesRead = stream.Read(TempBuffer_Buffer, 0, elementSize);
if (bytesRead < elementSize)
{
throw new SerializationException("Unexpected end of stream.");
}
long value = MemoryMarshal.Read <long>(TempBuffer_Buffer);
if (mDeserializingLittleEndian != BitConverter.IsLittleEndian)
{
EndiannessHelper.SwapBytes(ref value);
}
return(DateTime.FromBinary(value));
}
/// <summary>
/// Reads a <see cref="System.Char"/> value (native encoding).
/// </summary>
/// <param name="stream">Stream to read the value from.</param>
/// <returns>The read value.</returns>
internal char ReadPrimitive_Char_Native(Stream stream)
{
const int bytesToRead = 2;
int bytesRead = stream.Read(TempBuffer_Buffer, 0, bytesToRead);
if (bytesRead < bytesToRead)
{
throw new SerializationException("Unexpected end of stream.");
}
char value = MemoryMarshal.Read <char>(TempBuffer_Buffer);
if (mDeserializingLittleEndian != BitConverter.IsLittleEndian)
{
EndiannessHelper.SwapBytes(ref value);
}
return(value);
}
/// <summary>
/// Reads a <see cref="System.Double"/> value.
/// </summary>
/// <param name="stream">Stream to read the value from.</param>
/// <returns>The read value.</returns>
internal double ReadPrimitive_Double(Stream stream)
{
const int elementSize = sizeof(double);
int bytesRead = stream.Read(TempBuffer_Buffer, 0, elementSize);
if (bytesRead < elementSize)
{
throw new SerializationException("Unexpected end of stream.");
}
double value = MemoryMarshal.Read <double>(TempBuffer_Buffer);
if (mDeserializingLittleEndian != BitConverter.IsLittleEndian)
{
EndiannessHelper.SwapBytes(ref value);
}
return(value);
}
/// <summary>
/// Reads a <see cref="System.DateTimeOffset"/> object.
/// </summary>
/// <param name="stream">Stream to read the DateTimeOffset object from.</param>
/// <returns>The read <see cref="System.DateTimeOffset"/> object.</returns>
internal DateTimeOffset ReadPrimitive_DateTimeOffset(Stream stream)
{
const int elementSize = 2 * sizeof(long);
int bytesRead = stream.Read(TempBuffer_Buffer, 0, elementSize);
if (bytesRead < elementSize)
{
throw new SerializationException("Unexpected end of stream.");
}
long dateTimeTicks = MemoryMarshal.Read <long>(TempBuffer_Buffer);
long timezoneOffsetTicks = MemoryMarshal.Read <long>(TempBuffer_Buffer.AsSpan().Slice(8));
if (mDeserializingLittleEndian != BitConverter.IsLittleEndian)
{
EndiannessHelper.SwapBytes(ref dateTimeTicks);
EndiannessHelper.SwapBytes(ref timezoneOffsetTicks);
}
return(new DateTimeOffset(dateTimeTicks, new TimeSpan(timezoneOffsetTicks)));
}
/// <summary>
/// Reads a <see cref="System.String"/> object (UTF-16 encoding).
/// </summary>
/// <param name="stream">Stream to read the string object from.</param>
/// <returns>The read string.</returns>
internal unsafe string ReadPrimitive_String_UTF16(Stream stream)
{
// read the number of UTF-16 code units
int codeUnitCount = Leb128EncodingHelper.ReadInt32(stream);
int size = codeUnitCount * sizeof(char);
// read encoded string
EnsureTemporaryByteBufferSize(size);
int bytesRead = stream.Read(TempBuffer_Buffer, 0, size);
if (bytesRead < size)
{
throw new SerializationException("Unexpected end of stream.");
}
// swap bytes to fix endianness issues, if necessary
var buffer = MemoryMarshal.Cast <byte, char>(TempBuffer_Buffer.AsSpan(0, bytesRead));
if (mDeserializingLittleEndian != BitConverter.IsLittleEndian)
{
for (int i = 0; i < buffer.Length; i++)
{
EndiannessHelper.SwapBytes(ref buffer[i]);
}
}
// create a string from the buffer
#if NETSTANDARD2_0 || NET461
string s;
fixed(char *p = buffer)
{
s = new string(p, 0, buffer.Length);
}
#elif NETSTANDARD2_1_OR_GREATER || NET5_0_OR_GREATER
string s = new string(buffer);
#else
#error Unhandled .NET framework
#endif
mDeserializedObjectIdTable.Add(mNextDeserializedObjectId++, s);
return(s);
}
