public int Compare(bool leftExists, ReadOnlySpan <byte> left, bool rightExists, ReadOnlySpan <byte> right)
{
byte leftValue = leftExists ? ScalarSpanReader.ReadByte(left) : this.defaultValue;
byte rightValue = rightExists ? ScalarSpanReader.ReadByte(right) : this.defaultValue;
return(leftValue.CompareTo(rightValue));
}
public int Compare(bool leftExists, ReadOnlySpan <byte> left, bool rightExists, ReadOnlySpan <byte> right)
{
ulong leftValue = leftExists ? ScalarSpanReader.ReadULong(left) : this.defaultValue;
ulong rightValue = rightExists ? ScalarSpanReader.ReadULong(right) : this.defaultValue;
return(leftValue.CompareTo(rightValue));
}
public int Compare(bool leftExists, ReadOnlySpan <byte> left, bool rightExists, ReadOnlySpan <byte> right)
{
if (!leftExists || !rightExists)
{
return(leftExists.CompareTo(rightExists));
}
return(ScalarSpanReader.ReadByte(left).CompareTo(ScalarSpanReader.ReadByte(right)));
}
public static void SortVector <TSpanComparer>(
Span <byte> buffer,
int vectorUOffset,
int vtableIndex,
int?keyInlineSize,
TSpanComparer comparer) where TSpanComparer : ISpanComparer
{
checked
{
int vectorStartOffset = vectorUOffset + (int)ScalarSpanReader.ReadUInt(buffer.Slice(vectorUOffset));
int vectorLength = (int)ScalarSpanReader.ReadUInt(buffer.Slice(vectorStartOffset));
int index0Position = vectorStartOffset + sizeof(int);
(int, int, int)[]? pooledArray = null;
public static void SortVector <TSpanComparer>(
Span <byte> buffer,
int vectorUOffset,
int vtableIndex,
int?keyInlineSize,
TSpanComparer comparer) where TSpanComparer : ISpanComparer
{
checked
{
int vectorStartOffset = vectorUOffset + (int)ScalarSpanReader.ReadUInt(buffer.Slice(vectorUOffset));
int vectorLength = (int)ScalarSpanReader.ReadUInt(buffer.Slice(vectorStartOffset));
int index0Position = vectorStartOffset + sizeof(int);
// Traverse the vector and figure out the offsets of all the keys.
// Store that in some local data, hopefully on the stack. 512 is somewhat arbitrary, but we want to avoid stack overflows.
Span <(int offset, int length, int tableOffset)> keyOffsets =
vectorLength < 512
? stackalloc (int, int, int)[vectorLength]
public static void Create <TInputBuffer>(TInputBuffer inputBuffer, int offset, out VTable4 item)
where TInputBuffer : IInputBuffer
{
inputBuffer.InitializeVTable(
offset,
out _,
out nuint fieldCount,
out ReadOnlySpan <byte> fieldData);
item = new VTable4();
switch (fieldCount)
{
case 0:
break;
case 1:
{
item.offset0 = ScalarSpanReader.ReadUShort(fieldData);
}
break;
case 2:
{
item.offset0ui = ScalarSpanReader.ReadUInt(fieldData);
}
break;
case 3:
{
fieldData = fieldData.Slice(0, 6);
item.offset0ui = ScalarSpanReader.ReadUInt(fieldData);
item.offset4 = ScalarSpanReader.ReadUShort(fieldData.Slice(4, 2));
}
break;
default:
{
item.offset0ul = ScalarSpanReader.ReadULong(fieldData);
}
break;
}
}
public double ReadDouble(int offset)
{
this.CheckAlignment(offset, sizeof(double));
return(ScalarSpanReader.ReadDouble(this.memory.AsSpan().Slice(offset)));
}
public float ReadFloat(int offset)
{
this.CheckAlignment(offset, sizeof(float));
return(ScalarSpanReader.ReadFloat(this.memory.AsSpan().Slice(offset)));
}
public long ReadLong(int offset)
{
this.CheckAlignment(offset, sizeof(long));
return(ScalarSpanReader.ReadLong(this.memory.AsSpan().Slice(offset)));
}
public short ReadShort(int offset)
{
this.CheckAlignment(offset, sizeof(short));
return(ScalarSpanReader.ReadShort(this.memory.AsSpan().Slice(offset)));
}
public sbyte ReadSByte(int offset)
{
return(ScalarSpanReader.ReadSByte(this.memory.AsSpan().Slice(offset)));
}
public string ReadString(int offset, int byteLength, Encoding encoding)
{
return(ScalarSpanReader.ReadString(this.memory.AsSpan().Slice(offset, byteLength), encoding));
}
public ulong ReadULong(int offset)
{
this.CheckAlignment(offset, sizeof(ulong));
return(ScalarSpanReader.ReadULong(this.pointer.segment.AsSpan().Slice(offset)));
}
public int ReadInt(int offset)
{
this.CheckAlignment(offset, sizeof(int));
return(ScalarSpanReader.ReadInt(this.pointer.segment.AsSpan().Slice(offset)));
}
public sbyte ReadSByte(int offset)
{
return(ScalarSpanReader.ReadSByte(this.pointer.segment.AsSpan().Slice(offset)));
}
