private Object ensureId(int id) {
Object[] array = valueArray;
if (array == null) {
synchronized (this) {
array = valueArray;
if (array == null) {
array = new Object[maxId * SLOT_SPAN];
valueArray = array;
attributeArray = new short[maxId];
}
}
}
int valueSlot = (id - 1) * SLOT_SPAN + VALUE_SLOT;
Object value = array[valueSlot];
if (value == null) {
if (id == constructorId) {
initSlot(constructorId, "constructor", constructor, constructorAttrs);
constructor = null; // no need to refer it any longer
} else {
obj.initPrototypeId(id);
}
value = array[valueSlot];
if (value == null) {
throw new IllegalStateException(
obj.getClass().getName()
+ ".initPrototypeId(int id) "
+ "did not initialize id="
+ id);
}
}
return value;
}
final int findId(String name) {
Object[] array = valueArray;
if (array == null) {
return obj.findPrototypeId(name);
}
int id = lastFoundId;
if (name == array[(id - 1) * SLOT_SPAN + NAME_SLOT]) {
return id;
}
id = obj.findPrototypeId(name);
if (id != 0) {
int nameSlot = (id - 1) * SLOT_SPAN + NAME_SLOT;
// Make cache to work!
array[nameSlot] = name;
lastFoundId = id;
}
return id;
}
final IdFunctionObject createPrecachedConstructor() {
if (constructorId != 0) throw new IllegalStateException();
constructorId = obj.findPrototypeId("constructor");
if (constructorId == 0) {
throw new IllegalStateException("No id for constructor property");
}
obj.initPrototypeId(constructorId);
if (constructor == null) {
throw new IllegalStateException(
obj.getClass().getName()
+ ".initPrototypeId() did not "
+ "initialize id="
+ constructorId);
}
constructor.initFunction(obj.getClassName(), ScriptableObject.getTopLevelScope(obj));
constructor.markAsConstructor(obj);
return constructor;
}
final void initValue(int id, String name, Object value, int attributes) {
if (!(1 <= id && id <= maxId)) throw new IllegalArgumentException();
if (name == null) throw new IllegalArgumentException();
if (value == NOT_FOUND) throw new IllegalArgumentException();
ScriptableObject.checkValidAttributes(attributes);
if (obj.findPrototypeId(name) != id) throw new IllegalArgumentException(name);
if (id == constructorId) {
if (!(value instanceof IdFunctionObject)) {
throw new IllegalArgumentException(
"consructor should be initialized with IdFunctionObject");
}
constructor = (IdFunctionObject) value;
constructorAttrs = (short) attributes;
return;
}
initSlot(id, name, value, attributes);
}