public int Compare(bool leftExists, ReadOnlySpan <byte> left, bool rightExists, ReadOnlySpan <byte> right)
{
uint leftValue = leftExists ? ScalarSpanReader.ReadUInt(left) : this.defaultValue;
uint rightValue = rightExists ? ScalarSpanReader.ReadUInt(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.ReadUInt(left).CompareTo(ScalarSpanReader.ReadUInt(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(
Span <byte> buffer,
int vectorUOffset,
int vtableIndex,
int?keyInlineSize,
ISpanComparer comparer)
{
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 override uint ReadUInt(int offset)
{
CheckAlignment(offset, sizeof(uint));
return(ScalarSpanReader.ReadUInt(this.memory.AsSpan().Slice(offset)));
}
public int Compare(ReadOnlySpan <byte> left, ReadOnlySpan <byte> right) => ScalarSpanReader.ReadUInt(left).CompareTo(ScalarSpanReader.ReadUInt(right));
public override uint ReadUInt(int offset)
{
return(ScalarSpanReader.ReadUInt(this.memory.AsSpan().Slice(offset)));
}
