zio.json.JsonDecoderVersionSpecific.scala Maven / Gradle / Ivy

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zio-json

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package zio.json

import scala.compiletime.*
import scala.compiletime.ops.any.IsConst

private[json] trait JsonDecoderVersionSpecific {
  inline def derived[A: deriving.Mirror.Of]: JsonDecoder[A] = DeriveJsonDecoder.gen[A]
}

trait DecoderLowPriorityVersionSpecific {

  inline given unionOfStringEnumeration[T](using IsUnionOf[String, T]): JsonDecoder[T] =
    val values = UnionDerivation.constValueUnionTuple[String, T]
    JsonDecoder.string.mapOrFail(
      {
        case raw if values.toList.contains(raw) => Right(raw.asInstanceOf[T])
        case _                                  => Left("expected one of: " + values.toList.mkString(", "))
      }
    )
}