public static void ReadGroup(ref ParseContext ctx, int fieldNumber, UnknownFieldSet set)
{
if (ctx.state.recursionDepth >= ctx.state.recursionLimit)
{
throw InvalidProtocolBufferException.RecursionLimitExceeded();
}
++ctx.state.recursionDepth;
set.MergeGroupFrom(ref ctx);
CheckLastTagWas(ref ctx.state, WireFormat.MakeTag(fieldNumber, WireFormat.WireType.EndGroup));
--ctx.state.recursionDepth;
}
public static void ReadGroup(ref ParseContext ctx, IMessage message)
{
if (ctx.state.recursionDepth >= ctx.state.recursionLimit)
{
throw InvalidProtocolBufferException.RecursionLimitExceeded();
}
++ctx.state.recursionDepth;
uint tag = ctx.state.lastTag;
int fieldNumber = WireFormat.GetTagFieldNumber(tag);
ReadRawMessage(ref ctx, message);
CheckLastTagWas(ref ctx.state, WireFormat.MakeTag(fieldNumber, WireFormat.WireType.EndGroup));
--ctx.state.recursionDepth;
}
public static void ReadMessage(ref ParseContext ctx, IMessage message)
{
int length = ParsingPrimitives.ParseLength(ref ctx.buffer, ref ctx.state);
if (ctx.state.recursionDepth >= ctx.state.recursionLimit)
{
throw InvalidProtocolBufferException.RecursionLimitExceeded();
}
int oldLimit = SegmentedBufferHelper.PushLimit(ref ctx.state, length);
++ctx.state.recursionDepth;
ReadRawMessage(ref ctx, message);
CheckReadEndOfStreamTag(ref ctx.state);
// Check that we've read exactly as much data as expected.
if (!SegmentedBufferHelper.IsReachedLimit(ref ctx.state))
{
throw InvalidProtocolBufferException.TruncatedMessage();
}
--ctx.state.recursionDepth;
SegmentedBufferHelper.PopLimit(ref ctx.state, oldLimit);
}
/// <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--;
}