Prohibit await in if condition (for now)

Test nested loops.

Control ANF tracing with another system property.

1 files changed, 8 insertions, 4 deletions

diff --git a/src/main/scala/scala/async/AsyncUtils.scala b/src/main/scala/scala/async/AsyncUtils.scala
index b2f6747..525f187 100644
--- a/src/main/scala/scala/async/AsyncUtils.scala
+++ b/src/main/scala/scala/async/AsyncUtils.scala
@@ -8,8 +8,12 @@ package scala.async
  */
 object AsyncUtils {
 
-  private val verbose = false || sys.props.getOrElse("scala.async.debug", "false").equalsIgnoreCase("true")
-  
-  private[async] def vprintln(s: => Any): Unit = if (verbose)
-    println("[async] "+s)
+  private def enabled(level: String) = sys.props.getOrElse(s"scala.async.$level", "false").equalsIgnoreCase("true")
+
+  private val verbose = enabled("debug")
+  private val trace   = enabled("trace")
+
+  private[async] def vprintln(s: => Any): Unit = if (verbose) println(s"[async] $s")
+
+  private[async] def trace(s: => Any): Unit = if (trace) println(s"[async] $s")
 }