Type in expressions to have them evaluated.
Type :help for more information.

scala> import scala.reflect.runtime.universe._
import scala.reflect.runtime.universe._

scala> import scala.tools.reflect.ToolBox
import scala.tools.reflect.ToolBox

scala> import scala.tools.reflect.Eval
import scala.tools.reflect.Eval

scala> {
  val x = 2
  val code = reify {
    x
  }
  println(code.eval)
}
<console>:18: free term: Ident(TermName("x")) defined by res0  in <console>:17:14
         val code = reify {
                          ^
2

scala> :quit