public static bool TryParse <TSequence>(ref BufferReader <TSequence> reader, out ulong value)
where TSequence : ISequence <ReadOnlyMemory <byte> >
{
var unread = reader.UnreadSegment;
if (Utf8Parser.TryParse(unread, out value, out int consumed))
{
if (unread.Length > consumed)
{
reader.Advance(consumed);
return(true);
}
}
Span <byte> tempSpan = stackalloc byte[30];
var copied = BufferReader.Peek(reader, tempSpan);
if (Utf8Parser.TryParse(tempSpan.Slice(0, copied), out value, out consumed))
{
reader.Advance(consumed);
return(true);
}
return(false);
}
public static bool TryRead <TSequence>(ref BufferReader <TSequence> reader, out int value, bool littleEndian = false)
where TSequence : ISequence <ReadOnlyMemory <byte> >
{
var unread = reader.UnreadSegment;
if (littleEndian)
{
if (BinaryPrimitives.TryReadInt32LittleEndian(unread, out value))
{
reader.Advance(sizeof(int));
return(true);
}
}
else if (BinaryPrimitives.TryReadInt32BigEndian(unread, out value))
{
reader.Advance(sizeof(int));
return(true);
}
Span <byte> tempSpan = stackalloc byte[4];
var copied = BufferReader.Peek(reader, tempSpan);
if (copied < 4)
{
value = default;
return(false);
}
if (littleEndian)
{
value = BinaryPrimitives.ReadInt32LittleEndian(tempSpan);
}
else
{
value = BinaryPrimitives.ReadInt32BigEndian(tempSpan);
}
reader.Advance(sizeof(int));
return(true);
}