File: Impls_Macros_1.scala

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import scala.reflect.macros.blackbox.Context

object Impls {
  def foo(unconventionalName: Context)(x: unconventionalName.Expr[Int]) = {
    import unconventionalName.universe._
    unconventionalName.Expr[Unit](q"""println("invoking foo...")""")
  }
}

object Macros {
  def foo(x: Int) = macro Impls.foo
}