@Override
public IMethod getCalleeTarget(CGNode caller, CallSiteReference site, IClass receiver) {
IMethod target = base.getCalleeTarget(caller, site, receiver);
if (target != null && target.getReference().equals(loadFileFunRef)) {
Set<String> names = new HashSet<String>();
SSAInstruction call =
caller.getIR()
.getInstructions()[
caller.getIR().getCallInstructionIndices(site).intIterator().next()];
if (call.getNumberOfUses() > 1) {
LocalPointerKey fileNameV = new LocalPointerKey(caller, call.getUse(1));
OrdinalSet<InstanceKey> ptrs = builder.getPointerAnalysis().getPointsToSet(fileNameV);
for (InstanceKey k : ptrs) {
if (k instanceof ConstantKey) {
Object v = ((ConstantKey) k).getValue();
if (v instanceof String) {
names.add((String) v);
}
}
}
if (names.size() == 1) {
String str = names.iterator().next();
try {
JavaScriptLoader cl =
(JavaScriptLoader) builder.getClassHierarchy().getLoader(JavaScriptTypes.jsLoader);
URL url = new URL(builder.getBaseURL(), str);
if (!loadedFiles.contains(url)) {
// try to open the input stream for the URL. if it fails, we'll get an IOException
// and fall through to default case
InputStream inputStream = url.openConnection().getInputStream();
inputStream.close();
JSCallGraphUtil.loadAdditionalFile(builder.getClassHierarchy(), cl, url);
loadedFiles.add(url);
IClass script =
builder
.getClassHierarchy()
.lookupClass(
TypeReference.findOrCreate(cl.getReference(), "L" + url.getFile()));
return script.getMethod(JavaScriptMethods.fnSelector);
}
} catch (MalformedURLException e1) {
// do nothing, fall through and return 'target'
} catch (IOException e) {
// do nothing, fall through and return 'target'
} catch (RuntimeException e) {
// do nothing, fall through and return 'target'
}
}
}
}
return target;
}
@Override
public IMethod getCalleeTarget(CGNode caller, CallSiteReference site, IClass receiver) {
if (site.getDeclaredTarget().equals(JavaScriptMethods.ctorReference)) {
assert cha.isSubclassOf(receiver, cha.lookupClass(JavaScriptTypes.Root));
IR callerIR = caller.getIR();
SSAAbstractInvokeInstruction callStmts[] = callerIR.getCalls(site);
assert callStmts.length == 1;
int nargs = callStmts[0].getNumberOfParameters();
return findOrCreateConstructorMethod(callerIR, callStmts[0], receiver, nargs - 1);
} else {
return base.getCalleeTarget(caller, site, receiver);
}
}
/**
* Check to see if a particular call site should be bypassed, before checking normal resolution of
* the receiver.
*
* @throws IllegalArgumentException if site is null
*/
@Override
public IMethod getCalleeTarget(CGNode caller, CallSiteReference site, IClass dispatchType) {
if (site == null) {
throw new IllegalArgumentException("site is null");
}
// first, see if we'd like to bypass the CHA-based target for the site
MethodReference ref = site.getDeclaredTarget();
IMethod chaTarget = chaMethodTargetSelector.getCalleeTarget(caller, site, dispatchType);
IMethod target =
(chaTarget == null)
? findOrCreateSyntheticMethod(ref, site.isStatic())
: findOrCreateSyntheticMethod(chaTarget, site.isStatic());
if (DEBUG) {
System.err.println("target is initially " + target);
}
if (target != null) {
return target;
} else {
// didn't bypass the CHA target; check if we should bypass the parent target
if (canIgnore(site.getDeclaredTarget())) {
// we want to generate a NoOpSummary for this method.
return findOrCreateSyntheticMethod(site.getDeclaredTarget(), site.isStatic());
}
if (parent instanceof ClassHierarchyMethodTargetSelector) {
// already checked this case and decided not to bypass
return chaTarget;
}
target = parent.getCalleeTarget(caller, site, dispatchType);
if (DEBUG) {
System.err.println("target becomes " + target);
}
if (target != null) {
IMethod bypassTarget = findOrCreateSyntheticMethod(target, site.isStatic());
if (DEBUG) System.err.println("bypassTarget is " + target);
return (bypassTarget == null) ? target : bypassTarget;
} else return target;
}
}
