gistfile1.txt

import scala.reflect.macros.WhiteboxContext
import scala.language.experimental.macros
import scala.reflect.api.Liftable
import scala.reflect.macros.Universe
import scala.reflect.api.Position

object Macros {
  implicit def liftableCaseClass[T]: Liftable[T] = macro impl[T]
  def impl[T: c.WeakTypeTag](c: WhiteboxContext) = {
    import c.universe._
    val T = weakTypeOf[T]
    if (!T.typeSymbol.asClass.isCaseClass) c.abort(c.enclosingPosition, "Not a case class")
    else {
      val params = T.members.collect { case x: MethodSymbol if x.isCaseAccessor => q"cc.$x" }.toList.reverse
      q"""
        import scala.reflect.api.Liftable
        new Liftable[$T] {
          def apply(universe: reflect.api.Universe, cc: $T): universe.Tree = {
            val ttree = universe.TypeTree(universe.typeOf[$T])
            universe.Apply(universe.Select(universe.New(ttree), universe.nme.CONSTRUCTOR), List())
          }
        }
     """
    }
  }
}