object Test extends App { import scala.reflect.runtime.universe._ import scala.reflect.runtime.{currentMirror => cm} import scala.tools.reflect.ToolBox val q = New(AppliedTypeTree(Select(Select(Select(Ident("scala"), newTermName("collection")), newTermName("slick")), newTypeName("Queryable")), List(Ident("Int")))) val x = ValDef(NoMods, newTermName("x"), Ident("Int"), EmptyTree) val fn = Function(List(x), Apply(Select(Ident(newTermName("x")), newTermName("$plus")), List(Literal(Constant("5"))))) val tree = Apply(Select(q, newTermName("map")), List(fn)) try cm.mkToolBox().runExpr(tree) catch { case ex: Throwable => println(ex.getMessage) } }