Add NameOps methods testing for anonymous classes and functions

Author: odersky

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

@@ -69,6 +69,8 @@ object NameOps {
     def isSetterName: Boolean = name endsWith str.SETTER_SUFFIX
     def isScala2LocalSuffix: Boolean = testSimple(_.endsWith(" "))
     def isSelectorName: Boolean = testSimple(n => n.startsWith("_") && n.drop(1).forall(_.isDigit))
+    def isAnonymousClassName: Boolean = name.startsWith(str.ANON_CLASS)
+    def isAnonymousFunctionName: Boolean = name.startsWith(str.ANON_FUN)
 
     /** Is name a variable name? */
     def isVariableName: Boolean = testSimple { n =>

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

@@ -484,13 +484,13 @@ object SymDenotations {
 
     /** Is this symbol an anonymous class? */
     final def isAnonymousClass(implicit ctx: Context): Boolean =
-      isClass && (initial.name startsWith str.ANON_CLASS)
+      isClass && initial.name.isAnonymousClassName
 
     final def isAnonymousFunction(implicit ctx: Context): Boolean =
-      this.symbol.is(Method) && (initial.name startsWith str.ANON_FUN)
+      this.symbol.is(Method) && initial.name.isAnonymousFunctionName
 
     final def isAnonymousModuleVal(implicit ctx: Context): Boolean =
-      this.symbol.is(ModuleVal) && (initial.name startsWith str.ANON_CLASS)
+      this.symbol.is(ModuleVal) && initial.name.isAnonymousClassName
 
     /** Is this a synthetic method that represents conversions between representations of a value class
       *  These methods are generated in ExtensionMethods