public override object Deserialize(Stream stream, Type type, DeserializeStringSpanDelegate deserializer)
{
var fromPool = false;
if (!(stream is MemoryStream ms))
{
fromPool = true;
if (stream.CanSeek)
stream.Position = 0;
ms = stream.CopyToNewMemoryStream();
}
return Deserialize(ms, fromPool, type, deserializer);
}
public override async Task <object> DeserializeAsync(Stream stream, Type type,
DeserializeStringSpanDelegate deserializer)
{
var fromPool = false;
if (!(stream is MemoryStream ms))
{
fromPool = true;
if (stream.CanSeek)
{
stream.Position = 0;
}
ms = await stream.CopyToNewMemoryStreamAsync();
}
return(Deserialize(ms, fromPool, type, deserializer));
}
private static object Deserialize(MemoryStream ms, bool fromPool, Type type,
DeserializeStringSpanDelegate deserializer)
{
var bytes = ms.GetBufferAsBytes();
var utf8 = CharPool.GetBuffer(Encoding.UTF8.GetCharCount(bytes, 0, (int) ms.Length));
try
{
var charsWritten = Encoding.UTF8.GetChars(bytes, 0, (int) ms.Length, utf8, 0);
var ret = deserializer(type, new ReadOnlySpan<char>(utf8, 0, charsWritten));
return ret;
}
finally
{
CharPool.ReleaseBufferToPool(ref utf8);
if (fromPool)
ms.Dispose();
}
}
private static object Deserialize(MemoryStream ms, bool fromPool, Type type,
DeserializeStringSpanDelegate deserializer)
{
var bytes = ms.GetBufferAsBytes();
var charPool = ArrayPool <char> .Shared;
var utf8 = charPool.Rent(Encoding.UTF8.GetCharCount(bytes, 0, (int)ms.Length));
try
{
var charsWritten = Encoding.UTF8.GetChars(bytes, 0, (int)ms.Length, utf8, 0);
var ret = deserializer(type, new ReadOnlySpan <char>(utf8, 0, charsWritten).WithoutBom());
return(ret);
}
finally
{
charPool.Return(utf8);
if (fromPool)
{
ms.Dispose();
}
}
}
private static object Deserialize(MemoryStream memoryStream, bool fromPool, Type type, DeserializeStringSpanDelegate deserializer)
{
var bytes = memoryStream.GetBufferAsSpan().WithoutBom();
var chars = CharPool.GetBuffer(Encoding.UTF8.GetCharCount(bytes));
try
{
var charsWritten = Encoding.UTF8.GetChars(bytes, chars);
ReadOnlySpan <char> charsSpan = chars;
var ret = deserializer(type, charsSpan.Slice(0, charsWritten));
return(ret);
}
finally
{
CharPool.ReleaseBufferToPool(ref chars);
if (fromPool)
{
memoryStream.Dispose();
}
}
}
