/// <summary>
/// Returns a reference to the 0th element of the ReadOnlySpan. If the Span is empty, returns a reference to the location where the 0th element
/// would have been stored. Such a reference can be used for pinning but must never be dereferenced.
/// </summary>
public static ref T GetReference <T>(ReadOnlySpan <T> span)
{
if (span.Pinnable == null)
{
unsafe { return(ref Unsafe.AsRef <T>(span.ByteOffset.ToPointer())); }
}
else
{
return(ref Unsafe.AddByteOffset <T>(ref span.Pinnable.Data, span.ByteOffset));
}
}
public async Task WriteAsync(Stream stream)
{
await stream.WriteAsync(Encoding.ASCII.GetBytes(ByteOffset.ToString("D10")));
await stream.WriteAsync(PdfSpec.Space);
await stream.WriteAsync(Encoding.ASCII.GetBytes(GenerationNumber.ToString("D5")));
await stream.WriteAsync(PdfSpec.Space);
await stream.WriteAsync(Type == XrefEntryType.InUse?PdfSpec.XrefInUse : PdfSpec.XrefFree);
await stream.WriteAsync(PdfSpec.Space);
await stream.WriteAsync(PdfSpec.NewLine);
}
public override byte[] Print()
{
return(BufferFromString($"{ByteOffset.ToString("#########")} {GenerationNumber.ToString("#####")} {InUseKeyword} {EscapeSequences.CRLF}"));
}
