diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/compiler/scala/tools/nsc/transform/TailCalls.scala | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/src/compiler/scala/tools/nsc/transform/TailCalls.scala b/src/compiler/scala/tools/nsc/transform/TailCalls.scala index 05fa65eb9c..5973c70583 100644 --- a/src/compiler/scala/tools/nsc/transform/TailCalls.scala +++ b/src/compiler/scala/tools/nsc/transform/TailCalls.scala @@ -128,6 +128,7 @@ abstract class TailCalls extends Transform { logResult(msg)(method.newValue(nme.THIS, pos, SYNTHETIC) setInfo currentClass.typeOfThis) } override def toString = s"${method.name} tparams=$tparams tailPos=$tailPos label=$label label info=${label.info}" + } object EmptyTailContext extends TailContext { @@ -185,6 +186,18 @@ abstract class TailCalls extends Transform { private def noTailContext() = new ClonedTailContext(ctx, tailPos = false) private def yesTailContext() = new ClonedTailContext(ctx, tailPos = true) + + override def transformUnit(unit: CompilationUnit): Unit = { + try { + super.transformUnit(unit) + } finally { + // OPT clear these after each compilation unit + failPositions.clear() + failReasons.clear() + accessed.clear() + } + } + /** Rewrite this tree to contain no tail recursive calls */ def transform(tree: Tree, nctx: TailContext): Tree = { val saved = ctx @@ -218,12 +231,12 @@ abstract class TailCalls extends Transform { */ def fail(reason: String) = { debuglog("Cannot rewrite recursive call at: " + fun.pos + " because: " + reason) - failReasons(ctx) = reason + if (ctx.isMandatory) failReasons(ctx) = reason treeCopy.Apply(tree, noTailTransform(target), transformArgs) } /* Position of failure is that of the tree being considered. */ def failHere(reason: String) = { - failPositions(ctx) = fun.pos + if (ctx.isMandatory) failPositions(ctx) = fun.pos fail(reason) } def rewriteTailCall(recv: Tree): Tree = { |