From d193065827c40002de1e56c316eb026907536c17 Mon Sep 17 00:00:00 2001
From: Jason Zaugg <jzaugg@gmail.com>
Date: Fri, 23 Nov 2012 23:30:22 +0100
Subject: Explicitly prohibit await in nested methods.

---
 src/main/scala/scala/async/AsyncAnalysis.scala  | 4 ++++
 src/main/scala/scala/async/TransformUtils.scala | 4 ++++
 2 files changed, 8 insertions(+)

(limited to 'src/main/scala')

diff --git a/src/main/scala/scala/async/AsyncAnalysis.scala b/src/main/scala/scala/async/AsyncAnalysis.scala
index 9e24130..38fd22f 100644
--- a/src/main/scala/scala/async/AsyncAnalysis.scala
+++ b/src/main/scala/scala/async/AsyncAnalysis.scala
@@ -45,6 +45,10 @@ private[async] final case class AsyncAnalysis[C <: Context](override val c: C) e
       }
     }
 
+    override def nestedMethod(module: DefDef) {
+      reportUnsupportedAwait(module, "nested method")
+    }
+
     override def byNameArgument(arg: Tree) {
       reportUnsupportedAwait(arg, "by-name argument")
     }
diff --git a/src/main/scala/scala/async/TransformUtils.scala b/src/main/scala/scala/async/TransformUtils.scala
index e37f66d..5095875 100644
--- a/src/main/scala/scala/async/TransformUtils.scala
+++ b/src/main/scala/scala/async/TransformUtils.scala
@@ -37,6 +37,9 @@ class TransformUtils[C <: Context](val c: C) {
     def nestedModule(module: ModuleDef) {
     }
 
+    def nestedMethod(module: DefDef) {
+    }
+
     def byNameArgument(arg: Tree) {
     }
 
@@ -47,6 +50,7 @@ class TransformUtils[C <: Context](val c: C) {
       tree match {
         case cd: ClassDef     => nestedClass(cd)
         case md: ModuleDef    => nestedModule(md)
+        case dd: DefDef       => nestedMethod(dd)
         case fun: Function    => function(fun)
         case Apply(fun, args) =>
           val isInByName = isByName(fun)
-- 
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