将Scala/Circe中的YAML解析为具有联合类型的case类

import java.io.File
import org.yaml.snakeyaml.Yaml

// 定义联合类型的case类
sealed trait Data
case class Person(name: String, age: Int) extends Data
case class Animal(species: String, sound: String) extends Data

// 读取YAML文件并解析为对象
def parseYamlFile(file: File): Data = {
  val yaml = new Yaml()
  val data = yaml.load(file)
  
  data match {
    case personData: java.util.Map[String, Any] =>
      val name = personData.get("name").asInstanceOf[String]
      val age = personData.get("age").asInstanceOf[Int]
      Person(name, age)
      
    case animalData: java.util.Map[String, Any] =>
      val species = animalData.get("species").asInstanceOf[String]
      val sound = animalData.get("sound").asInstanceOf[String]
      Animal(species, sound)
      
    case _ => throw new IllegalArgumentException("Invalid YAML data")
  }
}

// 示例用法
val yamlFile = new File("data.yaml")
val parsedData = parseYamlFile(yamlFile)

parsedData match {
  case person: Person => println(s"Person: name=${person.name}, age=${person.age}")
  case animal: Animal => println(s"Animal: species=${animal.species}, sound=${animal.sound}")
}