protected Location getLocation(DynamicObject object, Object value) {
object.updateShape();
final Shape oldShape = object.getShape();
final Property property = oldShape.getProperty(name);
if (property != null && property.getLocation().canSet(object, value)) {
return property.getLocation();
} else {
return null;
}
}
@TruffleBoundary
@Specialization
public void writeUncached(DynamicObject object, Object value) {
object.updateShape();
final Shape shape = object.getShape();
final Property property = shape.getProperty(name);
if (property == null) {
object.define(name, value, 0);
} else {
property.setGeneric(object, value, shape);
}
}
@Override
public final void set(DynamicObject store, Object value, Shape oldShape, Shape newShape)
throws IncompatibleLocationException {
assert store.getShape() == oldShape : "wrong shape";
assert newShape.isValid();
assert getLocation() != null;
getLocation().set(store, value, oldShape, newShape);
}
protected static List<Property> getObjectProperties(Shape shape) {
final List<Property> objectProperties = new ArrayList<>();
// User properties only, ShareInternalFieldsNode do the rest
for (Property property : shape.getProperties()) {
if (property.getLocation().canStore(SOME_OBJECT)) {
objectProperties.add(property);
}
}
return objectProperties;
}
private void setWithShapeSlowCase(
DynamicObject store, Object value, Shape currentShape, Shape nextShape) {
Shape oldShape = currentShape;
if (store.updateShape()) {
oldShape = store.getShape();
}
LayoutStrategy strategy = ((LayoutImpl) currentShape.getLayout()).getStrategy();
LayoutStrategy.ShapeAndProperty newShapeAndProperty =
strategy.generalizeProperty(this, value, (ShapeImpl) oldShape, (ShapeImpl) nextShape);
if (store.updateShape()) {
oldShape = store.getShape();
}
Shape newNextShape = newShapeAndProperty.getShape();
Property newProperty = newShapeAndProperty.getProperty();
assert newNextShape.isValid() && oldShape.isValid();
newProperty.setSafe(store, value, oldShape, newNextShape);
}
@Override
public final void setGeneric(DynamicObject store, Object value, Shape oldShape, Shape newShape) {
assert store.getShape() == oldShape : "wrong old shape";
assert newShape.isValid();
assert getLocation() != null;
try {
getLocation().set(store, value, oldShape, newShape);
} catch (IncompatibleLocationException ex) {
setWithShapeSlowCase(store, value, oldShape, newShape);
}
}
@Override
public final void setSafe(DynamicObject store, Object value, Shape oldShape, Shape newShape) {
assert store.getShape() == oldShape : "wrong old shape";
assert newShape.isValid();
assert getLocation() != null;
try {
getLocation().set(store, value, oldShape, newShape);
} catch (IncompatibleLocationException ex) {
throw new IllegalStateException();
}
}
protected Shape transitionWithNewField(Shape oldShape, Object value) {
// This duplicates quite a bit of DynamicObject.define(), but should be fixed in Truffle soon.
final Property oldProperty = oldShape.getProperty(name);
if (oldProperty != null) {
if (oldProperty.getFlags() == 0 && oldProperty.getLocation().canSet(null, value)) {
return oldShape; // already the right shape
} else {
DynamicObject copy = oldShape.getLayout().newInstance(oldShape);
copy.define(name, value, 0);
return copy.getShape();
}
} else {
final Location location =
oldShape
.allocator()
.locationForValue(
value, EnumSet.of(LocationModifier.Final, LocationModifier.NonNull));
final Property newProperty = Property.create(name, location, 0);
return oldShape.addProperty(newProperty);
}
}
private void setSlowCase(DynamicObject store, Object value) {
Shape oldShape = store.getShape();
Shape newShape = oldShape.defineProperty(getKey(), value, getFlags());
if (store.updateShape()) {
oldShape = store.getShape();
}
assert newShape.isValid() && oldShape.isValid();
Property newProperty = newShape.getProperty(getKey());
newProperty.setSafe(store, value, oldShape, newShape);
}
protected static Shape ensureSharedClasses(Shape shape) {
final ObjectType objectType = shape.getObjectType();
SharedObjects.writeBarrier(Layouts.BASIC_OBJECT.getLogicalClass(objectType));
SharedObjects.writeBarrier(Layouts.BASIC_OBJECT.getMetaClass(objectType));
return shape;
}
protected static Shape createSharedShape(DynamicObject object) {
object.updateShape();
final Shape oldShape = object.getShape();
return oldShape.makeSharedShape();
}
public static boolean isBasicObjectShape(Shape shape) {
return shape.getObjectType().getClass().getName().endsWith(".BasicObjectType"); // FIXME
}
public static boolean isQueueShape(Shape shape) {
return Layouts.QUEUE.isQueue(shape.getObjectType());
}
public static boolean isArrayShape(Shape shape) {
return Layouts.ARRAY.isArray(shape.getObjectType());
}
/**
* Allocate an empty object. All new objects initially have no properties. Properties are added
* when they are first stored, i.e., the store triggers a shape change of the object.
*/
public DynamicObject createObject() {
return emptyShape.newInstance();
}
protected Location getNewLocation(Shape newShape) {
return newShape.getProperty(name).getLocation();
}
