private void analyze(Class<?> cls, boolean topLevel) {
if (!Modifier.isPublic(cls.getModifiers())) {
return;
}
Lookup lookup = MethodHandles.lookup();
if (topLevel) {
this.constructor = new DynamicConstructor(getCoercionMatrix());
Constructor<?>[] constructors = cls.getConstructors();
for (int i = 0; i < constructors.length; ++i) {
try {
this.constructor.addConstructorHandle(lookup.unreflectConstructor(constructors[i]));
} catch (IllegalAccessException e) {
}
}
}
Method[] methods = getTargetClass().getMethods();
for (int i = 0; i < methods.length; ++i) {
int modifiers = methods[i].getModifiers();
if (Modifier.isPublic(modifiers) && Modifier.isStatic(modifiers)) {
analyzeMethod(methods[i]);
}
}
Field[] fields = getTargetClass().getFields();
for (int i = 0; i < fields.length; ++i) {
int modifiers = fields[i].getModifiers();
if (Modifier.isPublic(modifiers) && Modifier.isStatic(modifiers)) {
analyzeField(fields[i]);
}
}
if (cls.getSuperclass() != null) {
analyze(cls.getSuperclass(), false);
}
Class<?>[] interfaces = cls.getInterfaces();
for (int i = 0; i < interfaces.length; ++i) {
analyze(interfaces[i], false);
}
Class<?>[] innerClasses = cls.getDeclaredClasses();
for (int i = 0; i < innerClasses.length; ++i) {
int modifiers = innerClasses[i].getModifiers();
if (Modifier.isPublic(modifiers) && Modifier.isStatic(modifiers)) {
this.propertyReaders.put(
innerClasses[i].getSimpleName(), MethodHandles.constant(Class.class, innerClasses[i]));
}
}
}
private static boolean lookupsEqual(Lookup l1, Lookup l2) {
if (l1 == l2) {
return true;
}
if (l1.lookupClass() != l2.lookupClass()) {
return false;
}
return l1.lookupModes() == l2.lookupModes();
}
// warning ! stolen code ahead ! (http://code.google.com/p/jsr292-cookbook)
public static CallSite myBSM(Lookup lookup, String name, MethodType type, Class<?> staticType)
throws ReflectiveOperationException {
MethodHandle target = lookup.findStatic(staticType, name, type);
HashMap<String, HashMap<Object, Object>> cacheTable = cacheTables.get(staticType);
String selector = name + type.toMethodDescriptorString();
HashMap<Object, Object> cache = cacheTable.get(selector);
if (cache == null) {
cache = new HashMap<Object, Object>();
cacheTable.put(selector, cache);
}
MethodHandle identity = MethodHandles.identity(type.returnType());
identity = identity.asType(identity.type().changeParameterType(0, Object.class));
identity = MethodHandles.dropArguments(identity, 1, type.parameterType(0));
MethodHandle update = UPDATE.bindTo(cache);
update = update.asType(type.insertParameterTypes(0, type.returnType()));
MethodHandle fallback = MethodHandles.foldArguments(update, target);
fallback = MethodHandles.dropArguments(fallback, 0, Object.class);
MethodHandle combiner = MethodHandles.guardWithTest(NOT_NULL, identity, fallback);
MethodHandle cacheQuerier = MAP_GET.bindTo(cache);
cacheQuerier = cacheQuerier.asType(MethodType.methodType(Object.class, type.parameterType(0)));
MethodHandle memoize = MethodHandles.foldArguments(combiner, cacheQuerier);
return new ConstantCallSite(memoize);
}
private static MethodHandle findStatic(
Lookup lookup, Class target, String name, MethodType type) {
try {
return lookup.findStatic(target, name, type);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
static {
Lookup lookup = MethodHandles.lookup();
try {
NOT_NULL =
lookup.findStatic(
SpeedRecurenceWithIndyUsingBigInteger.class,
"notNull",
MethodType.methodType(boolean.class, Object.class));
MAP_GET =
lookup.findVirtual(
HashMap.class, "get", MethodType.methodType(Object.class, Object.class));
UPDATE =
lookup.findStatic(
SpeedRecurenceWithIndyUsingBigInteger.class,
"update",
MethodType.methodType(Object.class, HashMap.class, Object.class, Object.class));
} catch (ReflectiveOperationException e) {
throw (AssertionError) new AssertionError().initCause(e);
}
}
public void giveLookup(Lookup lookup) {
final Class<?> caller = PMLSecurityManager.getStackClass(3);
final Class<?> lookedup = lookup.lookupClass();
if (!caller.equals(lookedup)) throw new IllegalStateException();
final String name = caller.getName();
if (!this.aboutClass.equals(name)) throw new IllegalStateException();
if (this.myLookup != null) throw new IllegalStateException();
this.myLookup = lookup;
this.self = caller;
}
public static CallSite ivar(Lookup lookup, String name, MethodType type) throws Throwable {
String[] names = name.split(":");
String operation = names[0];
String varName = names[1];
VariableSite site = new VariableSite(type, varName, "noname", 0);
MethodHandle handle;
handle =
lookup.findStatic(
Bootstrap.class, operation, type.insertParameterTypes(0, VariableSite.class));
handle = handle.bindTo(site);
site.setTarget(handle.asType(site.type()));
return site;
}
private static Map<QName, MethodHandle> createInvokerMap(
final Class<? extends NotificationListener> key) {
final Builder<QName, MethodHandle> ret = ImmutableMap.<QName, MethodHandle>builder();
for (final Method method : key.getMethods()) {
if (BindingReflections.isNotificationCallback(method)) {
final Class<?> notification = method.getParameterTypes()[0];
final QName name = BindingReflections.findQName(notification);
MethodHandle handle;
try {
handle =
LOOKUP
.unreflect(method)
.asType(
MethodType.methodType(
void.class, NotificationListener.class, DataContainer.class));
ret.put(name, handle);
} catch (final IllegalAccessException e) {
throw new IllegalStateException("Can not access public method.", e);
}
}
}
return ret.build();
}
