/**
* Converts the given value to the given NativeObject (optionally following the prototype chains).
*
* @param nativeObject target NativeObject
* @param value Value to convert
* @param prototype use the prototype chain?
*/
public static Value toNativeObject(
HostObject nativeObject,
Value value,
boolean prototype,
Solver.SolverInterface solverInterface) {
State state = solverInterface.getState();
boolean bad = false;
Set<ObjectLabel> matches = Collections.newSet();
if (prototype) {
// Make lookup using prototype chains
Set<ObjectLabel> objectLabels = Collections.newSet(value.getObjectLabels());
Set<ObjectLabel> visited = Collections.newSet();
while (!objectLabels.isEmpty()) {
Set<ObjectLabel> temp = Collections.newSet();
for (ObjectLabel objectLabel : objectLabels) {
if (!visited.contains(objectLabel)) {
visited.add(objectLabel);
Value prototypeValue =
state.readInternalPrototype(java.util.Collections.singleton(objectLabel));
prototypeValue = UnknownValueResolver.getRealValue(prototypeValue, state);
// FIXME: Needs code review. Looks fishy to compare objects with toString().
String nativeObjectPrototype = nativeObject.toString();
String objectLabelPrototype = "";
if (objectLabel.getHostObject() != null) {
objectLabelPrototype = objectLabel.getHostObject().toString();
}
if (nativeObject == objectLabel.getHostObject()
|| nativeObjectPrototype.equals(objectLabelPrototype)) {
matches.add(objectLabel);
} else if (prototypeValue.getObjectLabels().isEmpty()) {
bad = true;
} else {
temp.addAll(prototypeValue.getObjectLabels());
}
}
}
objectLabels = temp;
}
} else {
// Make lookup ignoring prototype chains
// TODO: Verify this
for (ObjectLabel objectLabel : value.getObjectLabels()) {
if (objectLabel.getHostObject() == nativeObject
|| (objectLabel.getHostObject() != null
&& objectLabel.getHostObject().toString().equals(nativeObject + ".prototype"))) {
matches.add(objectLabel);
} else {
bad = true;
}
}
}
// Message.Status status;
// if (good && bad) {
// status = Message.Status.MAYBE;
// } else if (!good && bad) {
// status = Message.Status.CERTAIN;
// } else if (good && !bad) {
// status = Message.Status.NONE;
// } else if (!good && !bad) { // equivalent to Value of Undef / a null argument
// // Considered a certain type error.
// status = Message.Status.CERTAIN;
// } else {
// throw new AnalysisException("toNativeObject: fell through cases - should not
// happen.");
// }
if (bad) {
String message = "TypeError, argument is not of expected type: " + nativeObject;
solverInterface
.getMonitoring()
.addMessage(solverInterface.getNode(), Message.Severity.HIGH, message);
}
return Value.makeObject(matches);
}
public NormalForm(String normal_form, Map<String, Integer> mapping, Collection<String> args) {
super();
this.normal_form = normal_form;
this.mapping = Collections.newMap(mapping);
this.arguments_in_use = Collections.newSet(args);
}
