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Diffstat (limited to 'src/dotty/tools/dotc/ast/untpd.scala')
| -rw-r--r-- | src/dotty/tools/dotc/ast/untpd.scala | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/dotty/tools/dotc/ast/untpd.scala b/src/dotty/tools/dotc/ast/untpd.scala index b3f8747dc..1fdfed0f4 100644 --- a/src/dotty/tools/dotc/ast/untpd.scala +++ b/src/dotty/tools/dotc/ast/untpd.scala @@ -447,6 +447,11 @@ object untpd extends Trees.Instance[Untyped] with UntypedTreeInfo { } } + /** Fold `f` over all tree nodes, in depth-first, prefix order */ + class UntypedDeepFolder[X](f: (X, Tree) => X) extends UntypedTreeAccumulator[X] { + def apply(x: X, tree: Tree)(implicit ctx: Context): X = foldOver(f(x, tree), tree) + } + override def rename(tree: NameTree, newName: Name)(implicit ctx: Context): tree.ThisTree[Untyped] = tree match { case t: PolyTypeDef => cpy.PolyTypeDef(t)(newName.asTypeName, t.tparams, t.rhs).asInstanceOf[tree.ThisTree[Untyped]] |