Eval evaluates Scala 3 code.
In your build.sbt type this or similar:
ThisBuild / scalaVersion := "3.3.1"
libraryDependencies += ("com.eed3si9n.eval" % "eval" % "0.3.0").cross(CrossVersion.full)
Compile / fork := trueIn your Main.scala type this or similar:
package example
import com.eed3si9n.eval.Eval
case class ServerConfig(port: Int)
@main def main(): Unit =
val x = Eval[ServerConfig](
"example.ServerConfig(port = 8080)")
println(x.port)Run in sbt like so:
sbt:eval> run
[info] compiling 1 Scala source to target/scala-3.3.1/classes ...
[info] running (fork) example.main
[info] 8080
This shows that the string example.ServerConfig(port = 8080) was evaluated as a Scala code, and became available to the main function as an instantiated case class.
More examples here: https://eed3si9n.com/eval/