From 18cd0dde7e949d6ae20f451f98843d48f28e2e26 Mon Sep 17 00:00:00 2001
From: Martin Odersky <odersky@gmail.com>
Date: Sun, 9 Nov 2014 13:16:42 +0100
Subject: Remove unused class

It functionality is now all implemented in ExplicitOuter.
---
 src/dotty/tools/dotc/transform/AttachOuter.scala | 65 ------------------------
 1 file changed, 65 deletions(-)
 delete mode 100644 src/dotty/tools/dotc/transform/AttachOuter.scala

diff --git a/src/dotty/tools/dotc/transform/AttachOuter.scala b/src/dotty/tools/dotc/transform/AttachOuter.scala
deleted file mode 100644
index 9d2b0574d..000000000
--- a/src/dotty/tools/dotc/transform/AttachOuter.scala
+++ /dev/null
@@ -1,65 +0,0 @@
-package dotty.tools.dotc
-package transform
-
-import TreeTransforms._
-import core.DenotTransformers._
-import core.Symbols._
-import core.Contexts._
-import core.Types._
-import core.Flags._
-import core.Decorators._
-import core.StdNames.nme
-import ast.Trees._
-import util.Attachment
-
-/** This phase decorates News and parent constructors of non-static inner classes
- *  with an attachment indicating the outer reference as a tree. This is necessary because
- *  outer prefixes are erased, and explicit outer runs only after erasure.
- */
-class AttachOuter extends MiniPhaseTransform {
-  import ast.tpd._
-
-  val Outer = new Attachment.Key[Tree]
-
-  override def phaseName: String = "attachOuter"
-
-  private def outerPrefix(tpe: Type)(implicit ctx: Context): Type = tpe match {
-    case tpe: TypeRef =>
-      tpe.symbol match {
-        case cls: ClassSymbol =>
-          if (cls.owner.isStaticOwner || cls.is(Interface)) NoPrefix
-          else if (tpe.prefix eq NoPrefix) cls.owner.enclosingClass.thisType
-          else tpe.prefix
-        case _ =>
-          outerPrefix(tpe.underlying)
-      }
-    case tpe: TypeProxy =>
-      outerPrefix(tpe.underlying)
-  }
-
-  override def transformNew(tree: New)(implicit ctx: Context, info: TransformerInfo): Tree = {
-    val pre = outerPrefix(tree.tpt.tpe)
-    pre match {
-      case pre: SingletonType =>
-        tree.putAttachment(Outer, singleton(pre)) match {
-          case Some(outer) => assert(outer.tpe =:= pre)
-          case none =>
-        }
-      case NoPrefix =>
-    }
-    tree
-  }
-
-  override def transformTemplate(tree: Template)(implicit ctx: Context, info: TransformerInfo): Tree = {
-    def transformParent(tree: Tree): Tree = tree match {
-      case tree: TypeTree if outerPrefix(tree.tpe) != NoPrefix =>
-        val constr = New(tree.tpe, Nil).withPos(tree.pos)
-        val Select(nu: New, _) = methPart(constr)
-        transformNew(nu)
-        constr
-      case _ =>
-        tree
-    }
-    cpy.Template(tree)(parents = tree.parents mapconserve transformParent)
-  }
-}
\ No newline at end of file
-- 
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