/** Replace this.parent by replacement. */
void replaceParent(DepChain replacement) {
if (parent instanceof WeakBinderRef) {
VisageObject obj = ((WeakBinderRef) parent).get();
// FIXME : do we need this null check here?
if (obj != null) {
obj.setDepChain$internal$(replacement);
}
} else {
DepChain pchain = (DepChain) parent;
if (pchain.child0 == this) pchain.child0 = replacement;
if (pchain.child1 == this) pchain.child1 = replacement;
}
}
/** Replace parent.selector by dep, returning old value. */
private static DepChain replace(Object parent, int selector, DepChain dep) {
DepChain old = null;
if (selector == -1) {
WeakBinderRef wref = (WeakBinderRef) parent;
VisageObject visageObj = wref.get();
// FIXME : do we need this null check here?
if (visageObj != null) {
old = visageObj.getDepChain$internal$();
visageObj.setDepChain$internal$(dep);
}
} else {
DepChain pchain = (DepChain) parent;
if (selector == 0) {
old = pchain.child0;
pchain.child0 = dep;
} else {
old = pchain.child1;
pchain.child1 = dep;
}
}
return old;
}