Disentangle phases from treetransforms

TreeTransforms are no longer phases. This allows to generate
new transforms in prepare... methods without running into the
problem that thee new transforms are undefined as phases.

It also makes for a cleaner separation of concerns.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/dotty/tools/dotc/core/Decorators.scala b/src/dotty/tools/dotc/core/Decorators.scala
index cd7b46896..c96f1ba31 100644
--- a/src/dotty/tools/dotc/core/Decorators.scala
+++ b/src/dotty/tools/dotc/core/Decorators.scala
@@ -130,7 +130,7 @@ object Decorators {
    */
   implicit class PhaseListDecorator(val names: List[String]) extends AnyVal {
     def containsPhase(phase: Phase): Boolean = phase  match {
-      case phase: TreeTransformer => phase.transformations.exists(containsPhase)
+      case phase: TreeTransformer => phase.transformations.exists(trans => containsPhase(trans.phase))
       case _ => names exists (n => n == "all" || phase.name.startsWith(n))
     }
   }