Json codecs for Compound types

[Quafadas]

I have a case, where I want to decode a sub schema - List[CfnDigraphNode]

CfnDigraphNode is a union type.

I know the machinery exists, because I can decode a class which contains this structure. If I try to access it directly so:

val nodeJson = smithy4s.json.Json.writePrettyString[List[CfnDigraphNode]](nodes)

yields

No given instance of type smithy4s.schema.Schema[List[ils.smithy.ilsop.CfnDigraphNode]] was found for an implicit parameter of method writePrettyString in object Json

[Quafadas]

import com.github.plokhotnyuk.jsoniter_scala.core.JsonCodec
import smithy4s.schema.Schema

val noMagic: Schema[List[CfnDigraphNode]] = Schema.list(CfnDigraphNode.schema)

val nodeJson = smithy4s.json.Json.writePrettyString[List[CfnDigraphNode]](nodes)(noMagic)

Appears to do the trick...

[kubukoz]

This is the way, unless there's a smithy list shape for CfnDigraphNode.

For example, if you have

list CfnDigraphNodes {
  member: CfnDigraphNode
}

then you can do

val nodes: List[CfnDigraphNode] = ???

Json.writePrettyString(CfnDigraphNodes(nodes))