additional APIs to support converting from Toon format to a Jackson JsonNode (and vice versa)

[pjfanning]

Problem Statement

This relates to FasterXML/jackson-future-ideas#96

I think it would be useful to convert from a Toon documents to a Jackson JsonNode and to able to convert a Jackson JsonNode to a Toon document.
I'm not suggesting that you drop your existing APIs to convert directly from Toon documents to Java object instances (and vice versa) but with the extra APIs that I am suggesting, it would allow users to also plugin to Jackson ecosystem and benefit from its support for Java types and classes specific to languages like Kotlin and Scala.

There is https://github.com/prb/jackson-toon but this lib has a good chance of being more spec compliant. It still may make sense for this lib to have some support for integrating with Jackson.

Proposed Solution

New API methods. You already have some internal support for Jackson JsonNodes.

Alternatives Considered

No response

SPEC Compliance

No response

Additional Context

No response

[jenspapenhagen]

I have some question.

toon--> Jackson JsonNode

JsonNode node = ObjectMapper.valueToTree(JTioon.decode("""context:
  task: Our favorite hikes together
  location: Boulder
  season: spring_2025
friends[3]: ana,luis,sam
hikes[3]{id,name,distanceKm,elevationGain,companion,wasSunny}:
  1,Blue Lake Trail,7.5,320,ana,true
  2,Ridge Overlook,9.2,540,luis,false
  3,Wildflower Loop,5.1,180,sam,true"""));

Jackson JsonNode --> toon

String json = "{ \"f1\" : \"v1\" } ";
JsonNode jsonNode = ObjectMapper.readTree(json);
String toonString = JToon.encode(jsonNode);

This did not work with your use-case?
What do I miss?

[pjfanning]

Good point @jenspapenhagen.
I guess what I was getting at is that with an API, you could make some changes under the hood to optimise the conversion(s). For example, with the Toon -> JsonNode, you could try to create the nodes explicitly instead of requiring the conversion to a JSON String first.
Feel free to close this if it think is not useful.

[jenspapenhagen]

I will talk to @felipestanzani what he thinks about it.

[felipestanzani]

@jenspapenhagen @pjfanning I really did not understand the point here.

Could you give me a better example?