RFR: 8170595: Optimize Class.isAnonymousClass

[Mandy Chung]

> On Dec 2, 2016, at 6:29 AM, Claes Redestad <claes.redestad at oracle.com> wrote:
> 
> :
> http://cr.openjdk.java.net/~redestad/8170595/webrev.03/
> 
> This brings significant improvements to some variants:

Good to see the significant improvements.

I think what isLocalOrAnonymousClass needs probably is something like this:

  private boolean hasEnclosingMethodInfo() {
      Object[] enclosingInfo = getEnclosingMethod0();
      if (enclosingInfo != null) {
          EnclosingMethodInfo.validate(enclosingInfo);
      }
      return enclosingInfo != null;
  }

Then EnclosingMethodInfo doesn’t seem the need to change.  The overall change would be simpler.

As Joe suggests, this worths adding test cases for these methods, if not present.

Mandy