diff options
Diffstat (limited to 'src/library/scala/reflect/api/Attachment.scala')
| -rw-r--r-- | src/library/scala/reflect/api/Attachment.scala | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/library/scala/reflect/api/Attachment.scala b/src/library/scala/reflect/api/Attachment.scala index 9fa5ceb0fb..50f55b4aa5 100644 --- a/src/library/scala/reflect/api/Attachment.scala +++ b/src/library/scala/reflect/api/Attachment.scala @@ -7,8 +7,6 @@ package api * Attachments have to carry positions, because we don't want to introduce even a single additional field in Tree * imposing an unnecessary memory tax because of something that will not be used in most cases. */ -// [Eugene] with the introduction of `attach` and `payload[T]` users don't need to create custom attachments anymore -// however, we cannot move attachments to scala.reflect.internal, because they are used in Trees, which are implemented completely in scala.reflect.api trait Attachment { /** Gets the underlying position */ def pos: Position @@ -22,3 +20,10 @@ trait Attachment { /** Creates a copy of this attachment with its payload updated */ def withPayload(newPayload: Any): Attachment } + +// [Eugene] with the introduction of `attach` and `attachment[T]` users don't need to create custom attachments anymore +// however, we cannot move attachments to scala.reflect.internal, because they are used in Trees, which are implemented completely in scala.reflect.api +private[scala] case class NontrivialAttachment(pos: api.Position, payload: collection.mutable.ListBuffer[Any]) extends Attachment { + def withPos(newPos: api.Position) = copy(pos = newPos, payload = payload) + def withPayload(newPayload: Any) = copy(pos = pos, payload = newPayload.asInstanceOf[collection.mutable.ListBuffer[Any]]) +}
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