How can I unwind to a parent node using IParser?

[rcdailey]

I'm doing a lot of custom parsing logic. I am not sure if I'm going about it correctly, but what I have seems to work in the successful scenarios. Here's a small piece of it:

private void ParseAndAdd<TStart, TEnd>(IParser parser, ICollection<T> configs)
    where TStart : ParsingEvent
    where TEnd : ParsingEvent
{
    parser.Consume<TStart>();
    while (!parser.TryConsume<TEnd>(out _))
    {
        try
        {
            var lineNumber = parser.Current?.Start.Line;

            string? instanceName = null;
            if (parser.TryConsume<Scalar>(out var key))
            {
                instanceName = key.Value;
            }

            var newConfig = _deserializer.Deserialize<T>(parser);
            newConfig.Name = instanceName ?? "";

            var result = _validator.Validate(newConfig);
            if (result is {IsValid: false})
            {
                var printableName = instanceName ?? FlurlLogging.SanitizeUrl(newConfig.BaseUrl);
                _log.Error("Validation failed for instance config {Instance} at line {Line} with errors {Errors}",
                    printableName, lineNumber, result.Errors);
                return;
            }

            configs.Add(newConfig);
        }
        catch (YamlException e)
        {
            HandleException(e);
            parser.SkipThisAndNestedEvents();
        }
    }
}

The purpose of this method is to either parse a series of sibling mappings or sequence elements. I do not use List or Dictionary for this since I need more granular control of what happens.

The question is: On the line where I do Deserialize<T>(), if that throws, then the catch statement is not able to recover properly. I do a SkipThisAndNestedEvents() but what I really need to do is return to a particular parent node, and then skip it and its events. As of right now, it doesn't recover and position the parser at the correct "next" sibling element.

I also do not see a mechanism to do push/pop semantics on the parser. I could very easily do a "Push" of some kind at the start of the while loop and use that to "pop" on error (to return to that point) but I don't see a way to do that either (for example, Current is not assignable)

I thought about maybe using a INodeDeserializer, but I don't know if that would solve anything and it would also make what I'm doing even more complicated to reason about.

How can I exit back to a parent node in the parsing tree for error recovery purposes?