private void computeDeferredTypes() {
Collection<Box<DeferredType>> deferredTypes = trace.getKeys(DEFERRED_TYPE);
if (deferredTypes.isEmpty()) {
return;
}
// +1 is a work around against new Queue(0).addLast(...) bug // stepan.koltsov@ 2011-11-21
final Queue<DeferredType> queue = new Queue<DeferredType>(deferredTypes.size() + 1);
trace.addHandler(
DEFERRED_TYPE,
new ObservableBindingTrace.RecordHandler<Box<DeferredType>, Boolean>() {
@Override
public void handleRecord(
WritableSlice<Box<DeferredType>, Boolean> deferredTypeKeyDeferredTypeWritableSlice,
Box<DeferredType> key,
Boolean value) {
queue.addLast(key.getData());
}
});
for (Box<DeferredType> deferredType : deferredTypes) {
queue.addLast(deferredType.getData());
}
while (!queue.isEmpty()) {
DeferredType deferredType = queue.pullFirst();
if (!deferredType.isComputed()) {
try {
deferredType.getDelegate(); // to compute
} catch (ReenteringLazyValueComputationException e) {
// A problem should be reported while computing the type
}
}
}
}
private static void computeDeferredType(JetType type) {
// handle type inference loop: function or property body contains a reference to itself
// fun f() = { f() }
// val x = x
// type resolution must be started before body resolution
if (type instanceof DeferredType) {
DeferredType deferredType = (DeferredType) type;
if (!deferredType.isComputed()) {
deferredType.getDelegate();
}
}
}