255         ListBuffer<Name> idents = new ListBuffer<>();
 256         for (List<JCTree> defs = classDef.defs; defs.nonEmpty(); defs=defs.tail) {
 257             if (defs.head.hasTag(VARDEF) &&
 258                 (((JCVariableDecl) defs.head).mods.flags & ENUM) != 0) {
 259                 JCVariableDecl var = (JCVariableDecl)defs.head;
 260                 idents.append(var.name);
 261             }
 262         }
 263         return idents.toList();
 264     }
 265 
 266     /** A hash table mapping class symbols to lists of free variables.
 267      *  accessed by them. Only free variables of the method immediately containing
 268      *  a class are associated with that class.
 269      */
 270     Map<ClassSymbol,List<VarSymbol>> freevarCache;
 271 
 272     /** A navigator class for collecting the free variables accessed
 273      *  from a local class.
 274      */
 275     class FreeVarCollector extends CaptureScanner {
 276 
 277         FreeVarCollector(JCTree ownerTree) {
 278             super(ownerTree);
 279         }
 280 
 281         void addFreeVars(ClassSymbol c) {
 282             List<VarSymbol> fvs = freevarCache.get(c);
 283             if (fvs != null) {
 284                 for (List<VarSymbol> l = fvs; l.nonEmpty(); l = l.tail) {
 285                     addFreeVar(l.head);
 286                 }
 287             }
 288         }
 289 
 290         /** If tree refers to a class instance creation expression
 291          *  add all free variables of the freshly created class.
 292          */
 293         public void visitNewClass(JCNewClass tree) {
 294             ClassSymbol c = (ClassSymbol)tree.constructor.owner;
 295             addFreeVars(c);
 296             super.visitNewClass(tree);
 297         }
 298 
 299         /** If tree refers to a superclass constructor call,
 300          *  add all free variables of the superclass.
 301          */

 255         ListBuffer<Name> idents = new ListBuffer<>();
 256         for (List<JCTree> defs = classDef.defs; defs.nonEmpty(); defs=defs.tail) {
 257             if (defs.head.hasTag(VARDEF) &&
 258                 (((JCVariableDecl) defs.head).mods.flags & ENUM) != 0) {
 259                 JCVariableDecl var = (JCVariableDecl)defs.head;
 260                 idents.append(var.name);
 261             }
 262         }
 263         return idents.toList();
 264     }
 265 
 266     /** A hash table mapping class symbols to lists of free variables.
 267      *  accessed by them. Only free variables of the method immediately containing
 268      *  a class are associated with that class.
 269      */
 270     Map<ClassSymbol,List<VarSymbol>> freevarCache;
 271 
 272     /** A navigator class for collecting the free variables accessed
 273      *  from a local class.
 274      */
 275     public class FreeVarCollector extends CaptureScanner {
 276 
 277         protected FreeVarCollector(JCTree ownerTree) {
 278             super(ownerTree);
 279         }
 280 
 281         protected void addFreeVars(ClassSymbol c) {
 282             List<VarSymbol> fvs = freevarCache.get(c);
 283             if (fvs != null) {
 284                 for (List<VarSymbol> l = fvs; l.nonEmpty(); l = l.tail) {
 285                     addFreeVar(l.head);
 286                 }
 287             }
 288         }
 289 
 290         /** If tree refers to a class instance creation expression
 291          *  add all free variables of the freshly created class.
 292          */
 293         public void visitNewClass(JCNewClass tree) {
 294             ClassSymbol c = (ClassSymbol)tree.constructor.owner;
 295             addFreeVars(c);
 296             super.visitNewClass(tree);
 297         }
 298 
 299         /** If tree refers to a superclass constructor call,
 300          *  add all free variables of the superclass.
 301          */