private unsafe bool TryParseDateTime(ReadOnlySpan <byte> input, out DateTime value)
{
#if NET5_0_OR_GREATER
Unsafe.SkipInit(out value);
#else
value = default;
#endif
bool success = true;
if (input.Length == 19 | input.Length == 20)
{
return(Utf8_19ToDate(in AsciiInterface.StringTo <byte, Vector256 <sbyte> >(input), out value));
}
if (input.Length == 10 | input.Length == 11)
{
var v128 = AsciiInterface.StringTo <byte, Vector128 <sbyte> >(input);
if (IsNumber(v128, input.Length))
{
//纯数字时表示时间戳
System.Buffers.Text.Utf8Parser.TryParse(input, out long lv, out _);
value = new DateTime(1970, 1, 1).AddTicks(TimeSpan.TicksPerSecond * lv);
return(true);
}
#if NET6_0_OR_GREATER
var r = DateOnlyF.Utf8_10ToDate(v128, out var v0);
value = v0.ToDateTime(default);
public unsafe bool TryParse(string str, out Guid value)
{
var vector = AsciiInterface.UnicodeToAscii_32(ref AsciiInterface.StringTo <char, Vector256 <short> >(str)).AsInt16();
var r = TryParseGuid(in vector, out value);
return(r);
}
public unsafe string GuidToString(ref Guid value)
{
var str = AsciiInterface.FastAllocateString(32);
var vector = GuidToUtf8_32(in Unsafe.As <Guid, Vector128 <byte> >(ref value)).AsByte();
AsciiInterface.AsciiToUnicode(vector, ref AsciiInterface.StringTo <char, Vector256 <short> >(str));
return(str);
}
public unsafe string LongToString(long value)
{
var str = AsciiInterface.FastAllocateString(16);
var vector = Avx2.ConvertToVector256Int16(LongToUtf8_16(value));
Unsafe.As <char, Vector256 <short> >(ref Unsafe.AsRef(in str.GetPinnableReference())) = vector;
return(str);
}
public unsafe string DateTimeToString(DateTime value)
{
var str = AsciiInterface.FastAllocateString(19);
var r = DateTimeToUtf8_19(value);
Set38(Avx2.ConvertToVector256Int16(Avx2.ExtractVector128(r, 0)), Avx2.ConvertToVector256Int16(Avx2.ExtractVector128(r, 1)), ref Unsafe.AsRef(in str.GetPinnableReference()));
return(str);
}
public unsafe string IntToString(int value)
{
var str = AsciiInterface.FastAllocateString(8);
var vector = IntToUtf8_8(value);
Unsafe.As <char, Vector128 <short> >(ref Unsafe.AsRef(in str.GetPinnableReference())) = Sse41.ConvertToVector128Int16((byte *)&vector);
return(str);
}
public unsafe string BytesToString(byte[] value, bool prefix = false)
{
#if NET6_0_OR_GREATER
ArgumentNullException.ThrowIfNull(value);
#else
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
#endif
var str = AsciiInterface.FastAllocateString(value.Length * 2 + (prefix ? 2 : 0));
ref char strSite = ref Unsafe.AsRef(in str.GetPinnableReference());
public override unsafe Guid Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
{
var str = reader.ValueSpan;
if (str.Length == 32)
{
if (TryParseGuid(in AsciiInterface.StringTo <byte, Vector256 <short> >(str), out var v))
{
return(v);
}
}
else
{
return(reader.GetGuid());
}
throw new InvalidCastException();
}
public override unsafe long Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
{
if (reader.TokenType == JsonTokenType.Number)
{
return(reader.GetInt64());
}
var str = reader.ValueSpan;
if (str.Length != 16)
{
throw new InvalidCastException();
}
if (TryParseLong(in AsciiInterface.StringTo <byte, Vector128 <short> >(str), out var v))
{
return(v);
}
throw new InvalidCastException();
}
public unsafe bool TryParse(ReadOnlySpan <char> s, out DateTime result)
{
var vector = AsciiInterface.UnicodeToAscii_32(ref AsciiInterface.StringTo <char, Vector256 <short> >(s));
return(TryParseDateTime(new ReadOnlySpan <byte>(&vector, s.Length), out result));
}
