private ScriptableObject getBuiltInDescriptor(String name) {
Object value = null;
int attr = EMPTY;
Scriptable scope = getParentScope();
if (scope == null) {
scope = this;
}
int info = findInstanceIdInfo(name);
if (info != 0) {
int id = (info & 0xFFFF);
value = getInstanceIdValue(id);
attr = (info >>> 16);
return buildDataDescriptor(scope, value, attr);
}
if (prototypeValues != null) {
int id = prototypeValues.findId(name);
if (id != 0) {
value = prototypeValues.get(id);
attr = prototypeValues.getAttributes(id);
return buildDataDescriptor(scope, value, attr);
}
}
return null;
}
@Override
public void delete(String name) {
int info = findInstanceIdInfo(name);
if (info != 0) {
// Let the super class to throw exceptions for sealed objects
if (!isSealed()) {
int attr = (info >>> 16);
if ((attr & PERMANENT) == 0) {
int id = (info & 0xFFFF);
setInstanceIdValue(id, NOT_FOUND);
}
return;
}
}
if (prototypeValues != null) {
int id = prototypeValues.findId(name);
if (id != 0) {
if (!isSealed()) {
prototypeValues.delete(id);
}
return;
}
}
super.delete(name);
}
@Override
public void defineOwnProperty(Context cx, Object key, ScriptableObject desc) {
if (key instanceof String) {
String name = (String) key;
int info = findInstanceIdInfo(name);
if (info != 0) {
int id = (info & 0xFFFF);
if (isAccessorDescriptor(desc)) {
delete(id); // it will be replaced with a slot
} else {
int attr = (info >>> 16);
Object value = getProperty(desc, "value");
setInstanceIdValue(id, value == NOT_FOUND ? Undefined.instance : value);
setAttributes(id, applyDescriptorToAttributeBitset(attr, desc));
return;
}
}
if (prototypeValues != null) {
int id = prototypeValues.findId(name);
if (id != 0) {
if (isAccessorDescriptor(desc)) {
prototypeValues.delete(id); // it will be replaced with a slot
} else {
int attr = prototypeValues.getAttributes(id);
Object value = getProperty(desc, "value");
prototypeValues.set(id, this, value == NOT_FOUND ? Undefined.instance : value);
prototypeValues.setAttributes(id, applyDescriptorToAttributeBitset(attr, desc));
return;
}
}
}
}
super.defineOwnProperty(cx, key, desc);
}
@Override
public void put(String name, Scriptable start, Object value) {
int info = findInstanceIdInfo(name);
if (info != 0) {
if (start == this && isSealed()) {
throw Context.reportRuntimeError1("msg.modify.sealed", name);
}
int attr = (info >>> 16);
if ((attr & READONLY) == 0) {
if (start == this) {
int id = (info & 0xFFFF);
setInstanceIdValue(id, value);
} else {
start.put(name, start, value);
}
}
return;
}
if (prototypeValues != null) {
int id = prototypeValues.findId(name);
if (id != 0) {
if (start == this && isSealed()) {
throw Context.reportRuntimeError1("msg.modify.sealed", name);
}
prototypeValues.set(id, start, value);
return;
}
}
super.put(name, start, value);
}
@Override
public int getAttributes(String name) {
int info = findInstanceIdInfo(name);
if (info != 0) {
int attr = (info >>> 16);
return attr;
}
if (prototypeValues != null) {
int id = prototypeValues.findId(name);
if (id != 0) {
return prototypeValues.getAttributes(id);
}
}
return super.getAttributes(name);
}
@Override
public Object get(String name, Scriptable start) {
int info = findInstanceIdInfo(name);
if (info != 0) {
int id = (info & 0xFFFF);
Object value = getInstanceIdValue(id);
if (value != NOT_FOUND) return value;
}
if (prototypeValues != null) {
int id = prototypeValues.findId(name);
if (id != 0) {
Object value = prototypeValues.get(id);
if (value != NOT_FOUND) return value;
}
}
return super.get(name, start);
}
@Override
public boolean has(String name, Scriptable start) {
int info = findInstanceIdInfo(name);
if (info != 0) {
int attr = (info >>> 16);
if ((attr & PERMANENT) != 0) {
return true;
}
int id = (info & 0xFFFF);
return NOT_FOUND != getInstanceIdValue(id);
}
if (prototypeValues != null) {
int id = prototypeValues.findId(name);
if (id != 0) {
return prototypeValues.has(id);
}
}
return super.has(name, start);
}
@Override
public void setAttributes(String name, int attributes) {
ScriptableObject.checkValidAttributes(attributes);
int info = findInstanceIdInfo(name);
if (info != 0) {
int currentAttributes = (info >>> 16);
if (attributes != currentAttributes) {
throw new RuntimeException("Change of attributes for this id is not supported");
}
return;
}
if (prototypeValues != null) {
int id = prototypeValues.findId(name);
if (id != 0) {
prototypeValues.setAttributes(id, attributes);
return;
}
}
super.setAttributes(name, attributes);
}
