Extend custom serializers support in decoding

[BOOMeranGG]

Fix #127

Added tests from https://github.com/Kotlin/kotlinx.serialization/blob/master/docs/serializers.md#custom-serializers

Contextual (#282) isn't implemented yet

[orchestr7]

hm, don't get the idea - why this should be added to particular desrializers like ArrayDecoder?

[BOOMeranGG]

I did the same as I did for map: #291 (comment)
Now in Toml.kt we have:

    private fun <T> decode(deserializer: DeserializationStrategy<T>, parsedToml: TomlFile): T =
        when (deserializer.descriptor.kind) {
            StructureKind.LIST -> TomlArrayDecoder.decode(deserializer, parsedToml.getFirstChild() as TomlKeyValueArray, inputConfig)
            StructureKind.MAP -> TomlMapDecoder.decode(deserializer, parsedToml, inputConfig)
            else -> TomlMainDecoder.decode(deserializer, parsedToml, inputConfig)
        }

It's used only with delegating serializer (see delegatingSerializer test)

[orchestr7]

got it!

[orchestr7]

I remember, I had CustomSerializerTest with some @ignored tests

kotlin/com/akuleshov7/ktoml/decoders/CustomSerializerTest.kt

May be unify and remove @Ignored in some of tests? 🙏🏾

[BOOMeranGG]

It's the same class, I just moved it to /custom/ directory

[orchestr7]

Generally LGTM, also conflicts might be resolved

[orchestr7]

I believe that once we merge it, it'll be time to make the release. @BOOMeranGG, this release will be yours—and only yours—and it will be officially named 'Evgeny Bykov's Release'! :)

I'll also write up a post on Reddit. It’s finally time to push through that 500-star milestone )

[BOOMeranGG]

I believe that once we merge it, it'll be time to make the release. @BOOMeranGG, this release will be yours—and only yours—and it will be officially named 'Evgeny Bykov's Release'! :)

I'll also write up a post on Reddit. It’s finally time to push through that 500-star milestone )

Haha, thank you! But don't forget other contributors, all my PRs were based on their development :)