internal static float?ReadFloatWrapperSlow(ref ReadOnlySpan <byte> buffer, ref ParserInternalState state)
{
int length = ParsingPrimitives.ParseLength(ref buffer, ref state);
if (length == 0)
{
return(0F);
}
int finalBufferPos = state.totalBytesRetired + state.bufferPos + length;
float result = 0F;
do
{
// field=1, type=32-bit = tag of 13
if (ParsingPrimitives.ParseTag(ref buffer, ref state) == 13)
{
result = ParsingPrimitives.ParseFloat(ref buffer, ref state);
}
else
{
ParsingPrimitivesMessages.SkipLastField(ref buffer, ref state);
}
}while (state.totalBytesRetired + state.bufferPos < finalBufferPos);
return(result);
}
internal static ulong?ReadUInt64WrapperSlow(ref ReadOnlySpan <byte> buffer, ref ParserInternalState state)
{
// field=1, type=varint = tag of 8
const int expectedTag = 8;
int length = ParsingPrimitives.ParseLength(ref buffer, ref state);
if (length == 0)
{
return(0L);
}
int finalBufferPos = state.totalBytesRetired + state.bufferPos + length;
ulong result = 0L;
do
{
if (ParsingPrimitives.ParseTag(ref buffer, ref state) == expectedTag)
{
result = ParsingPrimitives.ParseRawVarint64(ref buffer, ref state);
}
else
{
ParsingPrimitivesMessages.SkipLastField(ref buffer, ref state);
}
}while (state.totalBytesRetired + state.bufferPos < finalBufferPos);
return(result);
}
internal static uint?ReadUInt32WrapperSlow(ref ReadOnlySpan <byte> buffer, ref ParserInternalState state)
{
int length = ParsingPrimitives.ParseLength(ref buffer, ref state);
if (length == 0)
{
return(0);
}
int finalBufferPos = state.totalBytesRetired + state.bufferPos + length;
uint result = 0;
do
{
// field=1, type=varint = tag of 8
if (ParsingPrimitives.ParseTag(ref buffer, ref state) == 8)
{
result = ParsingPrimitives.ParseRawVarint32(ref buffer, ref state);
}
else
{
ParsingPrimitivesMessages.SkipLastField(ref buffer, ref state);
}
}while (state.totalBytesRetired + state.bufferPos < finalBufferPos);
return(result);
}
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);
}
/// <summary>
/// Skip a group.
/// </summary>
public static void SkipGroup(ref ReadOnlySpan <byte> buffer, ref ParserInternalState state, uint startGroupTag)
{
// Note: Currently we expect this to be the way that groups are read. We could put the recursion
// depth changes into the ReadTag method instead, potentially...
state.recursionDepth++;
if (state.recursionDepth >= state.recursionLimit)
{
throw InvalidProtocolBufferException.RecursionLimitExceeded();
}
uint tag;
while (true)
{
tag = ParsingPrimitives.ParseTag(ref buffer, ref state);
if (tag == 0)
{
throw InvalidProtocolBufferException.TruncatedMessage();
}
// Can't call SkipLastField for this case- that would throw.
if (WireFormat.GetTagWireType(tag) == WireFormat.WireType.EndGroup)
{
break;
}
// This recursion will allow us to handle nested groups.
SkipLastField(ref buffer, ref state);
}
int startField = WireFormat.GetTagFieldNumber(startGroupTag);
int endField = WireFormat.GetTagFieldNumber(tag);
if (startField != endField)
{
throw new InvalidProtocolBufferException(
$"Mismatched end-group tag. Started with field {startField}; ended with field {endField}");
}
state.recursionDepth--;
}
public uint ReadTag()
{
return(ParsingPrimitives.ParseTag(ref buffer, ref state));
}
