dumps(Pair::class) (Pair(0,0), mutableMapOf("first" to 3))

reflect_jsh.kt

import jdk.jshell.JShell
import jdk.jshell.spi.*
import java.lang.reflect.*
import kotlin.reflect.KClass
import kotlin.reflect.full.memberProperties

//dumps(Pair::class) (Pair(0,0), mutableMapOf("first" to 3))

fun dumps(T:KClass<*>, ld:T=JS("(void)(${T} o, java.util.Map<String,Object> m){"+
  T.memberProperties.joinToString(""){"  m.put(\"${it.name}\",o.get${it.name.capitalize()}());"}+"}")!!
)=fun(o:Any, m:Map<*,*>)=ld.main(o,m).let{m}

typealias T=Class<*>
fun T.main(vararg a:Any?)=methods[0].run{setAccessible(true);invoke(null,*a)}
inline fun <reified T> SAM(fu: String, noinline fn: (Array<Any>) -> Any?)=java.lang.reflect.Proxy.newProxyInstance(
  T::class.java.classLoader, arrayOf(T::class.java)
) { o,f, args -> if (f.name == fu) fn(args) else null } as T

var JS: (String) -> T? = run {
  val cl = object : ClassLoader() {
    var T: T? = null; var i=0
    fun defineClass(name: String, b: ByteArray)=super.defineClass(name, b, 0, b.size).also { T = it }
    override fun findClass(name:String)=Class.forName(name)
  }
  val loader = SAM<ExecutionControl>("load") { x ->
    for (it in x[0] as Array<ExecutionControl.ClassBytecodes>) cl.defineClass(it.name(), it.bytecodes())
    null
  }
  val js = JShell.builder().executionEngine(SAM<ExecutionControlProvider>("generate") { loader }, null).build()
  fun fnID(s:String)=if(s[0]=='(')cl.run{ val rp=s.indexOf(')'); i=i+1;"${s.substring(1,rp)} f${i}${s.substring(rp+1)}".replace("class ","") }else s
  
  { s -> try{js.eval(fnID(s))}catch(_:Exception){}; cl.T }
}