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Diffstat (limited to 'src/main/scala/scala/async/AsyncAnalysis.scala')
| -rw-r--r-- | src/main/scala/scala/async/AsyncAnalysis.scala | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/main/scala/scala/async/AsyncAnalysis.scala b/src/main/scala/scala/async/AsyncAnalysis.scala index f62d7a1..7aca269 100644 --- a/src/main/scala/scala/async/AsyncAnalysis.scala +++ b/src/main/scala/scala/async/AsyncAnalysis.scala @@ -8,6 +8,7 @@ import scala.reflect.macros.Context import scala.collection.mutable private[async] final case class AsyncAnalysis[C <: Context](c: C) { + import c.universe._ val utils = TransformUtils[c.type](c) @@ -74,12 +75,14 @@ private[async] final case class AsyncAnalysis[C <: Context](c: C) { override def traverse(tree: Tree) { def containsAwait = tree exists isAwait tree match { - case Try(_, _, _) if containsAwait => + case Try(_, _, _) if containsAwait => reportUnsupportedAwait(tree, "try/catch") super.traverse(tree) - case Return(_) => + case Return(_) => c.abort(tree.pos, "return is illegal within a async block") - case _ => + case ValDef(mods, _, _, _) if mods.hasFlag(Flag.LAZY) => + c.abort(tree.pos, "lazy vals are illegal within an async block") + case _ => super.traverse(tree) } } |