private boolean acceptableType(String rtype) {
TypeRef ref = analyzer.getTypeRefFromFQN(rtype);
try {
Clazz returnType = analyzer.findClass(ref);
if (returnType.isEnum()) {
return true;
}
// TODO check this is true for interfaces and annotations
if (!returnType.isAbstract()
|| (returnType.isInterface() && options.contains(Options.nested))) {
return true;
}
if (!returnType.isInterface()) {
analyzer.error("Abstract classes not allowed as interface method return values: %s", rtype);
} else {
analyzer.error("Nested metatype only allowed with option: nested type %s", rtype);
}
return false;
} catch (Exception e) {
analyzer.error(
"could not examine class for return type %s, exception message: %s",
rtype, e.getMessage());
return false;
}
}
private boolean identifiableCollection(String type, boolean intface, boolean topLevel) {
try {
Clazz clazz = analyzer.findClass(analyzer.getTypeRefFromFQN(type));
if (clazz != null
&& (!topLevel || !clazz.isAbstract())
&& ((intface && clazz.isInterface()) ^ clazz.hasPublicNoArgsConstructor())) {
TypeRef[] intfs = clazz.getInterfaces();
if (intfs != null) {
for (TypeRef intf : intfs) {
if (COLLECTION.matcher(intf.getFQN()).matches()
|| identifiableCollection(intf.getFQN(), true, false)) {
return true;
}
}
}
TypeRef ext = clazz.getSuper();
return ext != null && identifiableCollection(ext.getFQN(), false, false);
}
} catch (Exception e) {
return false;
}
return false;
}