public override TMessage?Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
{
var message = new TMessage();
if (reader.TokenType != JsonTokenType.String)
{
throw new InvalidOperationException("Expected string value for FieldMask.");
}
// TODO: Do we *want* to remove empty entries? Probably okay to treat "" as "no paths", but "foo,,bar"?
// Note: This logic replicates Google.Protobuf. Should follow their lead.
var jsonPaths = reader.GetString() !.Split(',', StringSplitOptions.RemoveEmptyEntries);
var messagePaths = (IList)message.Descriptor.Fields[FieldMask.PathsFieldNumber].Accessor.GetValue(message);
foreach (var path in jsonPaths)
{
messagePaths.Add(Legacy.ToSnakeCase(path));
}
return(message);
}