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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() = macro impl
}
defined object GrabContext
scala> object Test { class C(implicit a: Any) { GrabContext.grab } }
<console>:12: warning: a pure expression does nothing in statement position; you may be omitting necessary parentheses
object Test { class C(implicit a: Any) { GrabContext.grab } }
^
defined object Test
scala> object Test { class C(implicit a: Any) { GrabContext.grab } }
<console>:12: warning: a pure expression does nothing in statement position; you may be omitting necessary parentheses
object Test { class C(implicit a: Any) { GrabContext.grab } }
^
defined object Test
scala>
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