public static OperationStatus TryDecode(Stream stream, out VarLong result, out int bytes)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
bytes = 0;
long count = 0;
long b;
do
{
if (bytes == MaxEncodedSize)
{
result = default;
return(OperationStatus.InvalidData);
}
b = stream.ReadByte();
if (b == -1)
{
result = default;
return(OperationStatus.NeedMoreData);
}
count |= (b & 0x7F) << (bytes * 7);
bytes++;
}while ((b & 0x80) != 0);
result = (VarLong)count;
return(OperationStatus.Done);
}
public static OperationStatus TryDecode(Stream stream, out VarLong result, out int bytesConsumed)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
result = default;
bytesConsumed = 0;
ulong count = 0;
ulong b;
do
{
if (bytesConsumed == MaxEncodedSize)
{
return(OperationStatus.InvalidData);
}
else
{
b = (ulong)stream.ReadByte();
if (b == ulong.MaxValue)
{
return(OperationStatus.NeedMoreData);
}
}
count |= (b & 0x7F) << (bytesConsumed * 7);
bytesConsumed++;
}while ((b & 0x80) != 0);
result = (VarLong)count;
return(OperationStatus.Done);
}
public static OperationStatus TryDecode(
ReadOnlySpan <byte> source, out VarLong result, out int bytesConsumed)
{
result = 0;
bytesConsumed = 0;
ulong value = 0;
ulong b;
do
{
if (bytesConsumed == MaxEncodedSize)
{
return(OperationStatus.InvalidData);
}
else if (source.Length - bytesConsumed <= 0)
{
return(OperationStatus.NeedMoreData);
}
b = source[bytesConsumed];
value |= (b & 0x7F) << (bytesConsumed * 7);
bytesConsumed++;
}while ((b & 0x80) != 0);
result = (VarLong)value;
return(OperationStatus.Done);
}
public static TEnum AsEnum <TEnum>(this VarLong value)
where TEnum : Enum
{
return(EnumConverter.ToEnum <TEnum>(value));
}