Drop prettifying & generalise to all

Author: dwijnand

compiler/src/dotty/tools/dotc/core/Decorators.scala

@@ -274,6 +274,9 @@ object Decorators {
             s"[cannot display due to $msg, raw string = $x]"
       case _ => String.valueOf(x).nn
 
+    /** Returns the simple class name of `x`. */
+    def className: String = getClass.getSimpleName.nn
+
   extension [T](x: T)
     def assertingErrorsReported(using Context): T = {
       assert(ctx.reporter.errorsReported)

compiler/src/dotty/tools/dotc/core/Types.scala

@@ -1906,14 +1906,6 @@ object Types {
       case _ => show
     }
 
-    /** Returns the shortened and slightly prettified name of the class of the type. */
-    def className: String =
-      def go(s: String): String =
-        import Predef.augmentString // "import Texts._" imports the conversion to Text, which has a stripPrefix
-        val s2 = s.stripPrefix("Cached").stripPrefix("Real").stripSuffix("Impl").stripSuffix("$")
-        if s == s2 then s2 else go(s2)
-      go(getClass.getSimpleName.nn)
-
     /** A simplified version of this type which is equivalent wrt =:= to this type.
      *  This applies a typemap to the type which (as all typemaps) follows type
      *  variable instances and reduces typerefs over refined types. It also