Enum ClassOwnership

output/java_guava/1.4.18/Types.java:111–148

Decides what owner type to use for constructing ParameterizedType from a raw class.

  /** Decides what owner type to use for constructing {@link ParameterizedType} from a raw class. */

  private enum ClassOwnership {
    OWNED_BY_ENCLOSING_CLASS {
      @Nullable
      @Override
      Class<?> getOwnerType(Class<?> rawType) {
        return rawType.getEnclosingClass();
      }
    },

    LOCAL_CLASS_HAS_NO_OWNER {
      @Nullable
      @Override
      Class<?> getOwnerType(Class<?> rawType) {
        if (rawType.isLocalClass()) {
          return null;
        } else {
          return rawType.getEnclosingClass();
        }
      }
    };

@Nullable
abstract Class<?> getOwnerType(Class<?> rawType);
static final ClassOwnership JVM_BEHAVIOR = detectJvmBehavior();


private static ClassOwnership detectJvmBehavior() {
 class LocalClass<T> {}
 Class<?> subclass = new LocalClass<String>() {}.getClass();
 ParameterizedType parameterizedType = (ParameterizedType) subclass.getGenericSuperclass();
 for (ClassOwnership behavior : ClassOwnership.values()) {
   if (behavior.getOwnerType(LocalClass.class) == parameterizedType.getOwnerType()) {
     return behavior;
   }
 }
 throw new AssertionError();
}
  }

  /**
   * Returns a new {@link TypeVariable} that belongs to {@code declaration} with {@code name} and