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Type in expressions to have them evaluated.
Type :help for more information.
scala> import scala.language.experimental.macros
import scala.language.experimental.macros
scala> def pos_impl(c: scala.reflect.macros.blackbox.Context): c.Expr[String] = {
import c.universe._
c.Expr[String](Literal(Constant(c.enclosingPosition.getClass.toString)))
}
pos_impl: (c: scala.reflect.macros.blackbox.Context)c.Expr[String]
scala> def pos: String = macro pos_impl
defined term macro pos: String
scala> pos
res0: String = class scala.reflect.internal.util.RangePosition
scala> :quit
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