import scala.tools.nsc.reporters._ import scala.tools.nsc.Settings import reflect.runtime.Mirror.ToolBox object Test extends App { val code = scala.reflect.Code.lift{ class C { val x = 2 } new C().x }; val reporter = new ConsoleReporter(new Settings) val toolbox = new ToolBox(reporter) val evaluated = toolbox.runExpr(code.tree) println("evaluated = " + evaluated) }