void IFormatter <DateTime> .Write(DateTime value, MsgPackStream stream, IContext context)
{
var secondsSinceBclEpoch = value.Ticks / TimeSpan.TicksPerSecond;
var seconds = secondsSinceBclEpoch - BclSecondsAtUnixEpoch;
var nanoseconds = (value.Ticks % TimeSpan.TicksPerSecond) * NanosecondsPerTick;
// Reference:
// struct timespec {
// long tv_sec; // seconds
// long tv_nsec; // nanoseconds
// } time;
// if ((time.tv_sec >> 34) == 0) {
// uint64_t data64 = (time.tv_nsec << 34) | time.tv_sec;
// if (data64 & 0xffffffff00000000L == 0) {
// // timestamp 32
// uint32_t data32 = data64;
// serialize(0xd6, -1, data32)
// }
// else {
// // timestamp 64
// serialize(0xd7, -1, data64)
// }
// }
// else {
// // timestamp 96
// serialize(0xc7, 12, -1, time.tv_nsec, time.tv_sec)
// }
unchecked
{
if (seconds >> 34 == 0)
{
var data64 = (ulong)((nanoseconds << 34) | seconds);
if ((data64 & 0xffffffff00000000ul) == 0ul)
{
var data32 = (uint)data64;
StreamWriter.WriteExtensionHeader(new ExtensionHeader(TypeCode, 4u), stream);
stream.WriteUInt32(data32);
}
else
{
StreamWriter.WriteExtensionHeader(new ExtensionHeader(TypeCode, 8u), stream);
stream.WriteUInt64(data64);
}
}
else
{
StreamWriter.WriteExtensionHeader(new ExtensionHeader(TypeCode, 12u), stream);
stream.WriteUInt32((uint)nanoseconds);
stream.WriteInt64(seconds);
}
}
}
public void TestUnsignedMinMax()
{
var stream = new MsgPackStream();
stream.WriteUInt8(byte.MinValue);
stream.WriteUInt8(byte.MaxValue);
stream.WriteUInt16(ushort.MinValue);
stream.WriteUInt16(ushort.MaxValue);
stream.WriteUInt32(uint.MinValue);
stream.WriteUInt32(uint.MaxValue);
stream.WriteUInt64(ulong.MinValue);
stream.WriteUInt64(ulong.MaxValue);
stream.Position = 0;
Assert.AreEqual(byte.MinValue, stream.ReadUInt8());
Assert.AreEqual(byte.MaxValue, stream.ReadUInt8());
Assert.AreEqual(ushort.MinValue, stream.ReadUInt16());
Assert.AreEqual(ushort.MaxValue, stream.ReadUInt16());
Assert.AreEqual(uint.MinValue, stream.ReadUInt32());
Assert.AreEqual(uint.MaxValue, stream.ReadUInt32());
Assert.AreEqual(ulong.MinValue, stream.ReadUInt64());
Assert.AreEqual(ulong.MaxValue, stream.ReadUInt64());
}
public void TestUnsigned()
{
var stream = new MsgPackStream();
stream.WriteUInt8(255);
Assert.AreEqual(stream.Position, 1);
stream.WriteUInt16(12431);
Assert.AreEqual(stream.Position, 3);
stream.WriteUInt32(761);
Assert.AreEqual(stream.Position, 7);
stream.WriteUInt64(64);
Assert.AreEqual(stream.Position, 15);
stream.Position = 0;
Assert.AreEqual(255, stream.ReadUInt8());
Assert.AreEqual(12431, stream.ReadUInt16());
Assert.AreEqual(761, stream.ReadUInt32());
Assert.AreEqual(64, stream.ReadUInt64());
}