247             default:

   248                 return false;

   249         }

   250     }

   251 

   252     /** Return true if a a tree corresponds to a poly expression. */

   253     public static boolean isPoly(JCTree tree, JCTree origin) {

   254         switch (tree.getTag()) {

   255             case APPLY:

   256             case NEWCLASS:

   257             case CONDEXPR:

   258                 return !origin.hasTag(TYPECAST);

   259             case LAMBDA:

   260             case REFERENCE:

   261                 return true;

   262             case PARENS:

   263                 return isPoly(((JCParens)tree).expr, origin);