/** Finds the most specific common super class of the given classes by considering array types. */
public static org.hotswap.agent.javassist.CtClass commonSuperClassEx(
org.hotswap.agent.javassist.CtClass one, org.hotswap.agent.javassist.CtClass two)
throws org.hotswap.agent.javassist.NotFoundException {
if (one == two) {
return one;
} else if (one.isArray() && two.isArray()) {
org.hotswap.agent.javassist.CtClass ele1 = one.getComponentType();
org.hotswap.agent.javassist.CtClass ele2 = two.getComponentType();
org.hotswap.agent.javassist.CtClass element = commonSuperClassEx(ele1, ele2);
if (element == ele1) {
return one;
} else if (element == ele2) {
return two;
} else {
return one.getClassPool()
.get(element == null ? "java.lang.Object" : element.getName() + "[]");
}
} else if (one.isPrimitive() || two.isPrimitive()) {
return null; // TOP
} else if (one.isArray() || two.isArray()) {
// two.isArray())
return one.getClassPool().get("java.lang.Object");
} else {
return commonSuperClass(one, two);
}
}
private String fixTypes2(
ArrayList<TypeVar> scc, HashSet<String> lowersSet, org.hotswap.agent.javassist.ClassPool cp)
throws org.hotswap.agent.javassist.NotFoundException {
Iterator<String> it = lowersSet.iterator();
if (lowersSet.size() == 0) {
return null; // only NullType
} else if (lowersSet.size() == 1) {
return it.next();
} else {
org.hotswap.agent.javassist.CtClass cc = cp.get(it.next());
while (it.hasNext()) {
cc = commonSuperClassEx(cc, cp.get(it.next()));
}
if (cc.getSuperclass() == null || isObjectArray(cc)) {
cc = fixByUppers(scc, cp, new HashSet<TypeVar>(), cc);
}
if (cc.isArray()) {
return org.hotswap.agent.javassist.bytecode.Descriptor.toJvmName(cc);
} else {
return cc.getName();
}
}
}
private static boolean isObjectArray(org.hotswap.agent.javassist.CtClass cc)
throws org.hotswap.agent.javassist.NotFoundException {
return cc.isArray() && cc.getComponentType().getSuperclass() == null;
}