Anchors and aliases don't seem to work as expected

[padhia]

I'm not sure if I'm doing something wrong, but the following snippet includes a valid YAML document that fails to decode.

import org.virtuslab.yaml.*

val doc =
  """|a1: &a
     |  x: 1
     |  y: 2
     |a2:
     |  <<: *a
     |  y: 3""".stripMargin

case class A(x: Int, y: Int) derives YamlDecoder

assert(doc.as[Map[String, A]].isRight)

Any suggestions to get the above example to parse correctly?

Thanks

[tgodzik]

@lbialy do you know is this currently supported actually?

[lbialy]

I think references aren't implemented, unfortunately. What error do you get here @padhia?

[padhia]

Thanks for the quick response. The error I get is,

Key x doesn't exist in parsed document at 5:2,
  y:3
  ^

It seems << is treated as a regular YAML mapping object key. Thus, to instantiate an object of class A, << "key" is being silently ignored because it's not required, and the remaining key, that is y, is not sufficient because x is "missing".