diff options
Diffstat (limited to 'src/main/scala/scala/async/internal/AnfTransform.scala')
| -rw-r--r-- | src/main/scala/scala/async/internal/AnfTransform.scala | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/main/scala/scala/async/internal/AnfTransform.scala b/src/main/scala/scala/async/internal/AnfTransform.scala index b0774e3..f81f5af 100644 --- a/src/main/scala/scala/async/internal/AnfTransform.scala +++ b/src/main/scala/scala/async/internal/AnfTransform.scala @@ -48,6 +48,8 @@ private[async] trait AnfTransform { val stats :+ expr = anf.transformToList(tree) def statsExprUnit = stats :+ expr :+ api.typecheck(atPos(expr.pos)(Literal(Constant(())))) + def statsExprThrow = + stats :+ expr :+ api.typecheck(atPos(expr.pos)(Throw(Apply(Select(New(gen.mkAttributedRef(defn.IllegalStateExceptionClass)), nme.CONSTRUCTOR), Nil)))) expr match { case Apply(fun, args) if isAwait(fun) => val valDef = defineVal(name.await, expr, tree.pos) @@ -68,6 +70,8 @@ private[async] trait AnfTransform { // but add Unit value to bring it into form expected by async transform if (expr.tpe =:= definitions.UnitTpe) { statsExprUnit + } else if (expr.tpe =:= definitions.NothingTpe) { + statsExprThrow } else { val varDef = defineVar(name.ifRes, expr.tpe, tree.pos) def branchWithAssign(orig: Tree) = api.typecheck(atPos(orig.pos) { @@ -88,8 +92,9 @@ private[async] trait AnfTransform { // but add Unit value to bring it into form expected by async transform if (expr.tpe =:= definitions.UnitTpe) { statsExprUnit - } - else { + } else if (expr.tpe =:= definitions.NothingTpe) { + statsExprThrow + } else { val varDef = defineVar(name.matchRes, expr.tpe, tree.pos) def typedAssign(lhs: Tree) = api.typecheck(atPos(lhs.pos)(Assign(Ident(varDef.symbol), mkAttributedCastPreservingAnnotations(lhs, tpe(varDef.symbol))))) |