Revert "Commenting out unused members."

This reverts commit 951fc3a486.

1 files changed, 8 insertions, 8 deletions

diff --git a/src/compiler/scala/tools/nsc/typechecker/TypeDiagnostics.scala b/src/compiler/scala/tools/nsc/typechecker/TypeDiagnostics.scala
index ebeb8ef2c8..4f5291507e 100644
--- a/src/compiler/scala/tools/nsc/typechecker/TypeDiagnostics.scala
+++ b/src/compiler/scala/tools/nsc/typechecker/TypeDiagnostics.scala
@@ -41,9 +41,9 @@ trait TypeDiagnostics {
    *  nicer if Symbols, Types, and Trees all implemented some common interface
    *  in which isErroneous and similar would be placed.
    */
-  // def noErroneousTypes(tps: Type*)    = tps forall (x => !x.isErroneous)
-  // def noErroneousSyms(syms: Symbol*)  = syms forall (x => !x.isErroneous)
-  // def noErroneousTrees(trees: Tree*)  = trees forall (x => !x.isErroneous)
+  def noErroneousTypes(tps: Type*)    = tps forall (x => !x.isErroneous)
+  def noErroneousSyms(syms: Symbol*)  = syms forall (x => !x.isErroneous)
+  def noErroneousTrees(trees: Tree*)  = trees forall (x => !x.isErroneous)
 
   /** For errors which are artifacts of the implementation: such messages
    *  indicate that the restriction may be lifted in the future.
@@ -294,7 +294,7 @@ trait TypeDiagnostics {
     // distinguished from the other types in the same error message
     private val savedName = sym.name
     def restoreName()     = sym.name = savedName
-    // def isAltered         = sym.name != savedName
+    def isAltered         = sym.name != savedName
     def modifyName(f: String => String) = sym setName newTypeName(f(sym.name.toString))
 
     /** Prepend java.lang, scala., or Predef. if this type originated
@@ -478,10 +478,10 @@ trait TypeDiagnostics {
           }
           super.traverse(t)
         }
-        // def isUnused(t: Tree): Boolean = (
-        //   if (t.symbol.isTerm) isUnusedTerm(t.symbol)
-        //   else isUnusedType(t.symbol)
-        // )
+        def isUnused(t: Tree): Boolean = (
+          if (t.symbol.isTerm) isUnusedTerm(t.symbol)
+          else isUnusedType(t.symbol)
+        )
         def isUnusedType(m: Symbol): Boolean = (
               m.isType
           && !m.isTypeParameterOrSkolem // would be nice to improve this