private <T, U> Node buildPathToNode(final Class<U> clazz) throws ClassHierarchyException {
final String[] path = clazz.getName().split("\\$");
Node root = namespace;
for (int i = 0; i < path.length - 1; i++) {
root = root.get(path[i]);
}
if (root == null) {
throw new NullPointerException();
}
final Node parent = root;
final Type argType = ReflectionUtilities.getNamedParameterTargetOrNull(clazz);
if (argType == null) {
return JavaNodeFactory.createClassNode(parent, clazz);
} else {
// checked inside of NamedParameterNode, using reflection.
@SuppressWarnings("unchecked")
final NamedParameterNode<T> np =
JavaNodeFactory.createNamedParameterNode(
parent, (Class<? extends Name<T>>) clazz, argType);
if (parameterParser.canParse(ReflectionUtilities.getFullName(argType))
&& clazz.getAnnotation(NamedParameter.class).default_class() != Void.class) {
throw new ClassHierarchyException(
"Named parameter "
+ ReflectionUtilities.getFullName(clazz)
+ " defines default implementation for parsable type "
+ ReflectionUtilities.getFullName(argType));
}
final String shortName = np.getShortName();
if (shortName != null) {
final NamedParameterNode<?> oldNode = shortNames.get(shortName);
if (oldNode != null) {
if (oldNode.getFullName().equals(np.getFullName())) {
throw new IllegalStateException(
"Tried to double bind " + oldNode.getFullName() + " to short name " + shortName);
}
throw new ClassHierarchyException(
"Named parameters "
+ oldNode.getFullName()
+ " and "
+ np.getFullName()
+ " have the same short name: "
+ shortName);
}
shortNames.put(shortName, np);
}
return np;
}
}
private void processDefaultAnnotation(final Class<?> cmb) {
final DefaultImplementation di = cmb.getAnnotation(DefaultImplementation.class);
// XXX hack: move to helper method + unify with rest of Tang!
if (di != null) {
final String diName =
di.value() == Void.class ? di.name() : ReflectionUtilities.getFullName(di.value());
final ClassNode<?> cn = (ClassNode<?>) ch.getNode(cmb);
final String cnS = cn.getFullName();
if (!usages.contains(diName, cnS)) {
usages.put(diName, cnS);
if (!knownClasses.contains(cn)) {
knownClasses.add(cn);
}
}
}
}