blob: ceed1079b248b4a2527360a7bd1bc4ec95eaf268 (
plain) (
tree)
|
|
Type in expressions to have them evaluated.
Type :help for more information.
scala> import language.experimental._, reflect.macros.BlackboxContext
import language.experimental._
import reflect.macros.BlackboxContext
scala> object GrabContext {
def lastContext = Option(System.getProperties.get("lastContext").asInstanceOf[reflect.macros.runtime.Context])
// System.properties lets you stash true globals (unlike statics which are classloader scoped)
def impl(c: BlackboxContext)() = { import c.universe._; System.getProperties.put("lastContext", c); c.Expr[Unit](q"()") }
def grab(): Unit = macro impl
}
defined object GrabContext
scala> object Test { class C(implicit a: Any) { GrabContext.grab } }
defined object Test
scala> object Test { class C(implicit a: Any) { GrabContext.grab } }
defined object Test
scala>
|