adjust formatting, use isEnumClass, adjust doc

Author: bishabosha

compiler/src/dotty/tools/dotc/semanticdb/ExtractSemanticDB.scala

@@ -17,6 +17,8 @@ import scala.jdk.CollectionConverters._
 import collection.mutable
 import java.nio.file.Paths
 
+import dotty.tools.dotc.transform.SymUtils._
+
 import PartialFunction.condOpt
 
 import ast.untpd.{given _}
@@ -191,7 +193,7 @@ class ExtractSemanticDB extends Phase:
           val selfSpan = tree.self.span
           if selfSpan.exists && selfSpan.hasLength then
             traverse(tree.self)
-          if tree.symbol.owner.is(Enum, butNot=Case) then
+          if tree.symbol.owner.isEnumClass then
             tree.body.foreachUntilImport(traverse).foreach(traverse) // the first import statement
           else
             tree.body.foreach(traverse)

compiler/src/dotty/tools/dotc/transform/SymUtils.scala

@@ -171,7 +171,7 @@ object SymUtils {
     self
   }
 
-  def isEnum(using Context): Boolean = self.is(Enum, butNot=JavaDefined)
+  def isEnum(using Context): Boolean = self.is(Enum, butNot = JavaDefined)
   def isEnumClass(using Context): Boolean = isEnum && !self.is(Case)
 
   /** Does this symbol refer to anonymous classes synthesized by enum desugaring? */

library/src-bootstrapped/scala/reflect/Enum.scala

@@ -1,6 +1,6 @@
 package scala.reflect
 
-/** A base trait of all enum classes */
+/** A base trait of all Scala enum definitions */
 super trait Enum extends Any, Product, Serializable:
 
   /** A string uniquely identifying a case of an enum */