Added Scala 3 derived support

[TonioGela]

I'm not 100% sure that this may be enough to add Scala 3 derivation support, as idk what will happen to non-product types, but "works on my machine™" on case classes.

Also, I saw that the tests are not split by version, so I'll wait for your instructions about how to test it.

Thanks :D

[darkfrog26]

@TonioGela thanks for this! We don't currently have separate tests, but if you feel up to adding a Scala 3 specific unit test that would be great.

[TonioGela]

@TonioGela thanks for this! We don't currently have separate tests, but if you feel up to adding a Scala 3 specific unit test that would be great.

Okay, I'll try to come up with some scala 3 specific tests, maybe asking for some help.

Also, can I ask you a question? Is it me or I can't see a generic auto derivator that uses a generic Mirror.Of[T] instead of Mirror.ProductOf[T]? Is it possible for the moment to only auto derivate product types?

[darkfrog26]

I'm not sure I understand your question. To be honest, my Scala 3 knowledge is still a bit hacky, so it's possible I'm doing some less-than-ideal things in my code. I'd welcome any insights and suggestions to improve the code.

[TonioGela]

To be honest, my Scala 3 knowledge is still a bit hacky.

If we speak about macro, we're in two 😄
My question was related to the library capabilities, I was wondering if it is possible to autogenerate automatically, using RW.gen, a codec for every type hierarchy, both product and sum types. I'll try to study the lib a bit more in this sense and add some eventual tests 😇

[darkfrog26]

Oh, you mean like how Circe has the capability to auto-derive without needing the implicit val rw: RW[?] = RW.gen for each type? I used to use that with Circe and found the compile-time costs were insane as complexity grew, so I intentionally left that out.

[darkfrog26]

@TonioGela any updates on this? I'd love to merge it.

[TonioGela]

Sorry, last weeks have been really busy. I'll write some tests before the week ends and I'll add them to the PR so we can merge it, promess!

[TonioGela]

@darkfrog26 I added some trivial tests with Scala3 that at least can test the derivation syntax. In another PR, I might help you add some property-based tests to the whole project.

[darkfrog26]

Great work! Thanks!