Drop Printers mixin of Contexts

Author: odersky

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

@@ -107,8 +107,7 @@ object Contexts {
    *      of all class fields of type context; allow them only in whitelisted
    *      classes (which should be short-lived).
    */
-  abstract class Context(val base: ContextBase)
-    extends Printers { thiscontext =>
+  abstract class Context(val base: ContextBase) { thiscontext =>
 
     given Context = this
 
@@ -221,6 +220,11 @@ object Contexts {
     /** The current plain printer */
     def printerFn: Context => Printer = store(printerFnLoc)
 
+    /** A function creating a printer */
+    def printer: Printer =
+      val pr = printerFn(this)
+      if this.settings.YplainPrinter.value then pr.plain else pr
+
     /** The current settings values */
     def settingsState: SettingsState = store(settingsStateLoc)