internal static double?ReadDoubleWrapperLittleEndian(ref ReadOnlySpan <byte> buffer, ref ParserInternalState state)
{
// length:1 + tag:1 + value:8 = 10 bytes
if (state.bufferPos + 10 <= state.bufferSize)
{
// The entire wrapper message is already contained in `buffer`.
int length = buffer[state.bufferPos];
if (length == 0)
{
state.bufferPos++;
return(0D);
}
// tag:1 + value:8 = length of 9 bytes
// field=1, type=64-bit = tag of 9
if (length != 9 || buffer[state.bufferPos + 1] != 9)
{
return(ReadDoubleWrapperSlow(ref buffer, ref state));
}
state.bufferPos += 2;
return(ParsingPrimitives.ParseDouble(ref buffer, ref state));
}
else
{
return(ReadDoubleWrapperSlow(ref buffer, ref state));
}
}
internal static double?ReadDoubleWrapperSlow(ref ReadOnlySpan <byte> buffer, ref ParserInternalState state)
{
int length = ParsingPrimitives.ParseLength(ref buffer, ref state);
if (length == 0)
{
return(0D);
}
int finalBufferPos = state.totalBytesRetired + state.bufferPos + length;
double result = 0D;
do
{
// field=1, type=64-bit = tag of 9
if (ParsingPrimitives.ParseTag(ref buffer, ref state) == 9)
{
result = ParsingPrimitives.ParseDouble(ref buffer, ref state);
}
else
{
ParsingPrimitivesMessages.SkipLastField(ref buffer, ref state);
}
}while (state.totalBytesRetired + state.bufferPos < finalBufferPos);
return(result);
}
public double ReadDouble()
{
return(ParsingPrimitives.ParseDouble(ref buffer, ref state));
}