diff options
| -rw-r--r-- | src/dotty/tools/dotc/ast/Trees.scala | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/dotty/tools/dotc/ast/Trees.scala b/src/dotty/tools/dotc/ast/Trees.scala index f1ccfdb75..d7dcff992 100644 --- a/src/dotty/tools/dotc/ast/Trees.scala +++ b/src/dotty/tools/dotc/ast/Trees.scala @@ -804,7 +804,7 @@ object Trees { type ThisTree[-T >: Untyped] = Thicket[T] override def isEmpty: Boolean = trees.isEmpty override def toList: List[Tree[T]] = flatten(trees) - override def toString = if (isEmpty) "EmptyTree" else "Thicket(" + trees.mkString(", ") + ")" + override def toString = if(this eq theExceptionHandlerSel) "ExceptionSel" else if (isEmpty) "EmptyTree" else "Thicket(" + trees.mkString(", ") + ")" override def withPos(pos: Position): this.type = { val newTrees = trees.map(_.withPos(pos)) new Thicket[T](newTrees).asInstanceOf[this.type] @@ -818,9 +818,11 @@ object Trees { val theEmptyTree: Thicket[Type] = Thicket(Nil) val theEmptyValDef = new EmptyValDef[Type] + val theExceptionHandlerSel: Thicket[Type] = Thicket(Nil) def genericEmptyValDef[T >: Untyped]: ValDef[T] = theEmptyValDef.asInstanceOf[ValDef[T]] def genericEmptyTree[T >: Untyped]: Thicket[T] = theEmptyTree.asInstanceOf[Thicket[T]] + def genericExceptionHandlerSel[T >: Untyped]: Thicket[T] = theExceptionHandlerSel.asInstanceOf[Thicket[T]] def flatten[T >: Untyped](trees: List[Tree[T]]): List[Tree[T]] = { var buf: ListBuffer[Tree[T]] = null @@ -911,6 +913,7 @@ object Trees { type Thicket = Trees.Thicket[T] val EmptyTree: Thicket = genericEmptyTree + val ExceptionHandlerSel: Thicket = genericExceptionHandlerSel // selector used in exception hanlder of Try nodes val EmptyValDef: ValDef = genericEmptyValDef // ----- Auxiliary creation methods ------------------ |