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import scala.reflect.macros.blackbox.Context
import language.experimental.macros
object Macros {
def getValueImpl[T](c: Context): c.Expr[T] = {
import c.universe._
c.Expr[T](Apply(Select(c.prefix.tree, newTermName("getVal")), Nil))
}
def setValueImpl[T](c: Context)(value: c.Expr[T]): c.Expr[Unit] = {
import c.universe._
c.Expr[Unit](Apply(Select(c.prefix.tree, newTermName("setVal")), List(value.tree)))
}
}
object Module {
private var _val: String = "hello"
def setVal(value: String): Unit = this._val = value
def getVal(): String = this._val
def value: String = macro Macros.getValueImpl[String]
def value_=(value: String): Unit = macro Macros.setValueImpl[String]
}
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