public static State Get(long size)
{
if (size == 0)
{
return(End.Singleton);
}
if (size < 0)
{
throw new ArgumentException("Size must be nonnegative", nameof(size));
}
if (size > 256)
{
return(new Seek(size));
}
var cached = Volatile.Read(ref cache[size - 1]);
if (cached != null)
{
return(cached);
}
var result = new Seek(size);
Volatile.Write(ref cache[size - 1], result);
return(result);
}
public override State Transit(Stream stream)
{
var @byte = stream.ReadByte();
if (@byte == -1)
{
return(this);
}
if (@byte == '-')
{
// |
// -1\r\n
return(Seek.Get(3));
}
if (@byte == '0')
{
// |
// 0\r\n
return(Seek.Get(2));
}
return(new ArrayLength(@byte - '0'));
}
public override State Transit(Stream stream)
{
var @byte = stream.ReadByte();
if (@byte == -1)
{
return(this);
}
if (@byte == '-')
{
// |
// "-1\r\n"
return(Seek.Get(3));
}
if (@byte == '0')
{
// |
// 0\r\n\r\n
return(Seek.Get(4));
}
return(new BulkString(@byte - '0'));
}
public override State Transit(Stream stream)
{
var length = partiallyParsedLength;
while (true)
{
var @byte = stream.ReadByte();
if (@byte == -1)
{
return(length == partiallyParsedLength
? this
: new ArrayLength(length));
}
if (@byte == '\r')
{
// \n (length items)
return(new Serial(
Seek.Get(1),
Array.Get(length)
));
}
length = length * 10 + @byte - '0';
}
}
public override State Transit(Stream stream)
{
while (true)
{
var @byte = stream.ReadByte();
if (@byte == -1)
{
return(this);
}
if (@byte == '\r')
{
return(Seek.Get(1));
}
}
}
public override State Transit(Stream stream)
{
var length = partiallyParsedLength;
while (true)
{
var @byte = stream.ReadByte();
if (@byte == -1)
{
return(length == partiallyParsedLength
? this
: new BulkString(length));
}
if (@byte == '\r')
{
// \n content \r\n
return(Seek.Get(length + Sizes.LF + Sizes.CRLF));
}
length = length * 10 + @byte - '0';
}
}