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);
}
public static UnknownFieldSet MergeFieldFrom(UnknownFieldSet unknownFields,
ref ParseContext ctx)
{
if (ctx.DiscardUnknownFields)
{
ParsingPrimitivesMessages.SkipLastField(ref ctx.buffer, ref ctx.state);
return(unknownFields);
}
if (unknownFields == null)
{
unknownFields = new UnknownFieldSet();
}
if (!unknownFields.MergeFieldFrom(ref ctx))
{
throw new InvalidProtocolBufferException("Merge an unknown field of end-group tag, indicating that the corresponding start-group was missing."); // match the old code-gen
}
return(unknownFields);
}
internal static T Read <T>(ref ParseContext ctx, FieldCodec <T> codec)
{
int length = ctx.ReadLength();
int oldLimit = SegmentedBufferHelper.PushLimit(ref ctx.state, length);
uint tag;
T value = codec.DefaultValue;
while ((tag = ctx.ReadTag()) != 0)
{
if (tag == codec.Tag)
{
value = codec.Read(ref ctx);
}
else
{
ParsingPrimitivesMessages.SkipLastField(ref ctx.buffer, ref ctx.state);
}
}
ParsingPrimitivesMessages.CheckReadEndOfStreamTag(ref ctx.state);
SegmentedBufferHelper.PopLimit(ref ctx.state, oldLimit);
return(value);
}
/// <summary>
/// Skips the data for the field with the tag we've just read.
/// This should be called directly after <see cref="ReadTag"/>, when
/// the caller wishes to skip an unknown field.
/// </summary>
/// <remarks>
/// This method throws <see cref="InvalidProtocolBufferException"/> if the last-read tag was an end-group tag.
/// If a caller wishes to skip a group, they should skip the whole group, by calling this method after reading the
/// start-group tag. This behavior allows callers to call this method on any field they don't understand, correctly
/// resulting in an error if an end-group tag has not been paired with an earlier start-group tag.
/// </remarks>
/// <exception cref="InvalidProtocolBufferException">The last tag was an end-group tag</exception>
/// <exception cref="InvalidOperationException">The last read operation read to the end of the logical stream</exception>
public void SkipLastField()
{
var span = new ReadOnlySpan <byte>(buffer);
ParsingPrimitivesMessages.SkipLastField(ref span, ref state);
}
