private static <T> void mergeStagedChainInner(List<CtClass<T>> chain) {
if (chain.size() == 1) return;
reverse(chain);
CtClass<T> toMerge = chain.get(0);
for (int i = 1; i < chain.size(); i++) {
CtClass<T> mergeInto = chain.get(i);
replaceInstantiatedTypeParams(toMerge, mergeInto);
toMerge
.getAnnotations()
.stream()
.forEach(
(CtAnnotation<? extends Annotation> a) -> {
if (mergeInto.getAnnotation(a.getActualAnnotation().getClass()) == null)
add(mergeInto, a, mergeInto::addAnnotation);
});
toMerge.getSuperInterfaces().forEach(mergeInto::addSuperInterface);
toMerge
.getAnonymousExecutables()
.forEach(b -> add(mergeInto, b, mergeInto::addAnonymousExecutable));
toMerge.getNestedTypes().forEach(nt -> add(mergeInto, nt, mergeInto::addNestedType));
toMerge.getFields().forEach(f -> add(mergeInto, f, mergeInto::addField));
for (CtMethod<?> methodToMerge : toMerge.getMethods()) {
processMethod(mergeInto, toMerge, methodToMerge);
}
final CtClass<T> finalToMerge = toMerge;
mergeInto.getConstructors().forEach(c -> processConstructor(c, finalToMerge));
mergeInto.setSuperclass(toMerge.getSuperclass());
toMerge = mergeInto;
}
}
private static <T> void processMethod(
CtClass<?> mergeInto, CtClass<?> toMerge, CtMethod<T> methodToMerge) {
if (methodToMerge.hasModifier(STATIC)) {
add(mergeInto, methodToMerge, mergeInto::addMethod);
return;
}
if (methodToMerge.hasModifier(ABSTRACT)) return;
Optional<CtMethod<?>> overridingMethod =
mergeInto
.getMethods()
.stream()
.filter(m -> MethodNode.overrides(m, methodToMerge))
.findFirst();
if (overridingMethod.isPresent()) {
@SuppressWarnings("unchecked")
CtMethod<T> overriding = (CtMethod<T>) overridingMethod.get();
boolean shouldRemoveAnn = methodToMerge.getAnnotation(Override.class) == null;
if (!overriding.hasModifier(ABSTRACT)) processOverridden(mergeInto, toMerge, methodToMerge);
if (shouldRemoveAnn) removeAnnotation(overriding, Override.class);
} else {
add(mergeInto, methodToMerge, mergeInto::addMethod);
}
}