private void SkipGroup()
{
var startGroupTag = _lastTag;
while (true)
{
var tag = ReadTag();
if (tag == 0U)
{
throw OutOfInputException();
}
if (WireFormat.GetWireType(tag) != WireType.EndGroup)
{
SkipField();
continue;
}
var startGroupFieldNumber = WireFormat.GetFieldNumber(startGroupTag);
var endGroupFieldNumber = WireFormat.GetFieldNumber(tag);
if (startGroupFieldNumber == endGroupFieldNumber)
{
return;
}
var message =
$"Mismatched end-group tag. Started with field {startGroupFieldNumber}; ended with field {endGroupFieldNumber}";
throw new InvalidDataException(message);
}
}
private static void AssertTagOk(int field, WireType wireType)
{
var tag = WireFormat.MakeTag(field, wireType);
Assert.Equal(field, WireFormat.GetFieldNumber(tag));
Assert.Equal(wireType, WireFormat.GetWireType(tag));
Assert.Equal(wireType, (WireType)(tag & 7));
Assert.Equal(field, (int)(tag >> 3));
}