src/java.base/share/classes/java/lang/invoke/MethodHandleNatives.java

rev 58565 : 8238358: Implementation of JEP 371: Hidden Classes
Reviewed-by: duke
Contributed-by: mandy.chung@oracle.com, lois.foltan@oracle.com, david.holmes@oracle.com, harold.seigel@oracle.com, serguei.spitsyn@oracle.com, alex.buckley@oracle.com, jamsheed.c.m@oracle.com

*** 23,32 ****
--- 23,34 ----
   * questions.
   */
  
  package java.lang.invoke;
  
+ import jdk.internal.access.JavaLangAccess;
+ import jdk.internal.access.SharedSecrets;
  import jdk.internal.ref.CleanerFactory;
  import sun.invoke.util.Wrapper;
  
  import java.lang.invoke.MethodHandles.Lookup;
  import java.lang.reflect.Field;
*** 135,144 ****
--- 137,155 ----
              REF_invokeStatic            = 6,
              REF_invokeSpecial           = 7,
              REF_newInvokeSpecial        = 8,
              REF_invokeInterface         = 9,
              REF_LIMIT                  = 10;
+ 
+         /**
+          * Flags for Lookup.ClassOptions
+          */
+         static final int
+             NESTMATE_CLASS            = 0x00000001,
+             HIDDEN_CLASS              = 0x00000002,
+             STRONG_LOADER_LINK        = 0x00000004,
+             ACCESS_VM_ANNOTATIONS     = 0x00000008;
      }
  
      static boolean refKindIsValid(int refKind) {
          return (refKind > REF_NONE && refKind < REF_LIMIT);
      }
*** 657,662 ****
--- 668,682 ----
          if (symbolicRefClass == definingClass)  return true;
          if (symbolicRef.isStatic() || symbolicRef.isPrivate())  return false;
          return (definingClass.isAssignableFrom(symbolicRefClass) ||  // Msym overrides Mdef
                  symbolicRefClass.isInterface());                     // Mdef implements Msym
      }
+ 
+     private static final JavaLangAccess JLA = SharedSecrets.getJavaLangAccess();
+     /*
+      * A convenient method for LambdaForms to get the class data of a given class.
+      * LambdaForms cannot use condy via MethodHandles.classData
+      */
+     static Object classData(Class<?> c) {
+         return JLA.classData(c);
+     }
  }