/**
* Copy from the copy method in StructUtil. Did not want to drag that code in. maybe this actually
* should go to struct.
*
* @param from
* @param to
* @param excludes
* @return
* @throws Exception
*/
public static <T extends struct> T xcopy(struct from, T to, String... excludes) throws Exception {
Arrays.sort(excludes);
for (Field f : from.fields()) {
if (Arrays.binarySearch(excludes, f.getName()) >= 0) continue;
Object o = f.get(from);
if (o == null) continue;
Field tof = to.getField(f.getName());
if (tof != null)
try {
tof.set(to, Converter.cnv(tof.getGenericType(), o));
} catch (Exception e) {
System.out.println(
"Failed to convert "
+ f.getName()
+ " from "
+ from.getClass()
+ " to "
+ to.getClass()
+ " value "
+ o
+ " exception "
+ e);
}
}
return to;
}
/**
* Sets up the mocks defined in the given mock class.
*
* <p>If the type {@linkplain MockClass#realClass referred to} by the mock class is actually an
* interface, then a {@linkplain #newEmptyProxy(ClassLoader, Class) new empty proxy} is created.
*
* @param mockClassOrInstance the mock class itself (given by its {@code Class} literal), or an
* instance of the mock class
* @return the new proxy instance created for the mocked interface, or {@code null} otherwise
* @throws IllegalArgumentException if a given mock class fails to specify the corresponding real
* class using the {@code @MockClass(realClass = ...)} annotation; or if a mock class defines
* a mock method for which no corresponding real method or constructor exists in the real
* class; or if the real method matching a mock method is {@code abstract}
* @see #setUpMock(Class, Object)
* @see #setUpMocks(Object...)
* @see <a
* href="http://code.google.com/p/jmockit/source/browse/trunk/main/test/mockit/MockAnnotationsTest.java#696">
* Example</a>
*/
public static <T> T setUpMock(Object mockClassOrInstance) {
Class<?> mockClass;
Object mock;
if (mockClassOrInstance instanceof Class<?>) {
mockClass = (Class<?>) mockClassOrInstance;
mock = null;
} else {
mockClass = mockClassOrInstance.getClass();
mock = mockClassOrInstance;
}
MockClassSetup setup = new MockClassSetup(mock, mockClass);
Class<?> realClass = setup.getRealClass();
T proxy = null;
if (realClass.isInterface()) {
//noinspection unchecked
proxy = (T) newEmptyProxy(mockClass.getClassLoader(), realClass);
setup.setRealClass(proxy.getClass());
}
setup.redefineMethods();
return proxy;
}
public boolean compareAndSet(T obj, V expect, V update) {
if (obj == null
|| obj.getClass() != tclass
|| cclass != null
|| (update != null && vclass != null && vclass != update.getClass()))
updateCheck(obj, update);
return unsafe.compareAndSwapObject(obj, offset, expect, update);
}
public void lazySet(T obj, V newValue) {
if (obj == null
|| obj.getClass() != tclass
|| cclass != null
|| (newValue != null && vclass != null && vclass != newValue.getClass()))
updateCheck(obj, newValue);
unsafe.putOrderedObject(obj, offset, newValue);
}
public boolean compareAndSet(T obj, long expect, long update) {
if (obj == null || obj.getClass() != tclass || cclass != null) fullCheck(obj);
synchronized (this) {
long v = unsafe.getLong(obj, offset);
if (v != expect) return false;
unsafe.putLong(obj, offset, update);
return true;
}
}
public boolean weakCompareAndSet(T obj, V expect, V update) {
// same implementation as strong form for now
if (obj == null
|| obj.getClass() != tclass
|| cclass != null
|| (update != null && vclass != null && vclass != update.getClass()))
updateCheck(obj, update);
return unsafe.compareAndSwapObject(obj, offset, expect, update);
}
/**
* Computes the display string for any value.
*
* @param t the value to print
* @return the formatted string
*/
public static <T> String print(T t) {
if (t == null) {
return "";
}
if (conversion.canConvert(t.getClass(), String.class)) {
return conversion.convert(t, String.class);
} else {
return t.toString();
}
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
if (method.getDeclaringClass().isAssignableFrom(original.getClass())) {
if (method.getName().equals("equals") && args.length == 1) {
return args[0] == proxy;
} else {
return method.invoke(original, args);
}
} else {
return getMethodHandle(method).bindTo(proxy).invokeWithArguments(args);
}
}
/**
* Computes the display string for any value, for a specific type.
*
* @param desc the field descriptor - custom formatters are extracted from this descriptor.
* @param t the value to print
* @return the formatted string
*/
public static <T> String print(TypeDescriptor desc, T t) {
if (t == null) {
return "";
}
if (desc != null && conversion.canConvert(desc, TypeDescriptor.valueOf(String.class))) {
return (String) conversion.convert(t, desc, TypeDescriptor.valueOf(String.class));
} else if (conversion.canConvert(t.getClass(), String.class)) {
return conversion.convert(t, String.class);
} else {
return t.toString();
}
}
private void ensureProtectedAccess(T obj) {
if (cclass.isInstance(obj)) {
return;
}
throw new RuntimeException(
new IllegalAccessException(
"Class "
+ cclass.getName()
+ " can not access a protected member of class "
+ tclass.getName()
+ " using an instance of "
+ obj.getClass().getName()));
}
@SuppressWarnings("unchecked")
public static <T> T clone(T object) {
try {
Method cloneMethod = object.getClass().getMethod("clone");
return (T) cloneMethod.invoke(object);
} catch (NoSuchMethodException e) {
throw new RuntimeException("Unexpected exception", e); // This is not supposed to happen
} catch (IllegalAccessException e) {
throw new RuntimeException("Unexpected exception", e); // This is not supposed to happen
} catch (InvocationTargetException e) {
throw new RuntimeException("Execption occured in clone() method", e);
}
}
private void initialize(Method method, T target) {
if (Modifier.isStatic(method.getModifiers()) && target != null) {
throw new IllegalArgumentException("Cannot supply a target for static methods.");
}
if (target != null && !method.getDeclaringClass().isAssignableFrom(target.getClass())) {
throw new IllegalArgumentException("Method and target object are not type compatible.");
}
if (!method.getReturnType().isAssignableFrom(Tuple.class)) {
throw new IllegalArgumentException("Can only wrap methods with return type Tuple.");
}
this.method = method;
this.target = target;
}
public static <T> T mixin(T target, Class<?>... interfaces) {
if (target == null) return null;
// When request is
final Class<?> targetClass = target.getClass();
if (Arrays.stream(interfaces).allMatch(i -> i.isAssignableFrom(targetClass))) {
return target;
}
Class[] classes;
int addedIndex;
if (Proxy.isProxyClass(targetClass)) {
MixinProxyHandler<T> handler = ((MixinProxyHandler<T>) Proxy.getInvocationHandler(target));
target = handler.getOriginal();
Class[] originalInterfaces = handler.getProxyInterfaces();
classes = new Class[originalInterfaces.length + interfaces.length];
System.arraycopy(originalInterfaces, 0, classes, 0, originalInterfaces.length);
addedIndex = originalInterfaces.length;
} else {
Class[] targetInterfaces = getAllInterfaces(targetClass);
classes = new Class[targetInterfaces.length + interfaces.length];
System.arraycopy(targetInterfaces, 0, classes, 0, targetInterfaces.length);
addedIndex = targetInterfaces.length;
}
Arrays.asList(interfaces)
.forEach(
i ->
Arrays.asList(i.getMethods())
.stream()
.filter(Method::isDefault)
.forEach(MixinUtils::getMethodHandle));
System.arraycopy(interfaces, 0, classes, addedIndex, interfaces.length);
ClassLoader cl = Thread.currentThread().getContextClassLoader();
return (T) Proxy.newProxyInstance(cl, classes, new MixinProxyHandler(target, classes));
}
public boolean weakCompareAndSet(T obj, long expect, long update) {
if (obj == null || obj.getClass() != tclass || cclass != null) fullCheck(obj);
return unsafe.compareAndSwapLong(obj, offset, expect, update);
}
public V get(T obj) {
if (obj == null || obj.getClass() != tclass || cclass != null) targetCheck(obj);
return (V) unsafe.getObjectVolatile(obj, offset);
}
public void set(T obj, long newValue) {
if (obj == null || obj.getClass() != tclass || cclass != null) fullCheck(obj);
unsafe.putLongVolatile(obj, offset, newValue);
}
public void lazySet(T obj, long newValue) {
if (obj == null || obj.getClass() != tclass || cclass != null) fullCheck(obj);
unsafe.putOrderedLong(obj, offset, newValue);
}
public long get(T obj) {
if (obj == null || obj.getClass() != tclass || cclass != null) fullCheck(obj);
return unsafe.getLongVolatile(obj, offset);
}
/**
* Parses object with follow rules:
*
* <p>1. All fields should had a public access. 2. The name of the filed should be fully equal to
* name of JSONObject key. 3. Supports parse of all Java primitives, all {@link String}, arrays of
* primitive types, {@link String}s and {@link com.vk.sdk.api.model.VKApiModel}s, list
* implementation line {@link VKList}, {@link com.vk.sdk.api.model.VKAttachments.VKAttachment} or
* {@link com.vk.sdk.api.model.VKPhotoSizes}, {@link com.vk.sdk.api.model.VKApiModel}s.
*
* <p>4. Boolean fields defines by vk_int == 1 expression.
*
* @param object object to initialize
* @param source data to read values
* @param <T> type of result
* @return initialized according with given data object
* @throws org.json.JSONException if source object structure is invalid
*/
@SuppressWarnings({"rawtypes", "unchecked"})
public static <T> T parseViaReflection(T object, JSONObject source) throws JSONException {
if (source.has("response")) {
source = source.optJSONObject("response");
}
if (source == null) {
return object;
}
for (Field field : object.getClass().getFields()) {
field.setAccessible(true);
String fieldName = field.getName();
Class<?> fieldType = field.getType();
Object value = source.opt(fieldName);
if (value == null) {
continue;
}
try {
if (fieldType.isPrimitive() && value instanceof Number) {
Number number = (Number) value;
if (fieldType.equals(int.class)) {
field.setInt(object, number.intValue());
} else if (fieldType.equals(long.class)) {
field.setLong(object, number.longValue());
} else if (fieldType.equals(float.class)) {
field.setFloat(object, number.floatValue());
} else if (fieldType.equals(double.class)) {
field.setDouble(object, number.doubleValue());
} else if (fieldType.equals(boolean.class)) {
field.setBoolean(object, number.intValue() == 1);
} else if (fieldType.equals(short.class)) {
field.setShort(object, number.shortValue());
} else if (fieldType.equals(byte.class)) {
field.setByte(object, number.byteValue());
}
} else {
Object result = field.get(object);
if (value.getClass().equals(fieldType)) {
result = value;
} else if (fieldType.isArray() && value instanceof JSONArray) {
result = parseArrayViaReflection((JSONArray) value, fieldType);
} else if (VKPhotoSizes.class.isAssignableFrom(fieldType) && value instanceof JSONArray) {
Constructor<?> constructor = fieldType.getConstructor(JSONArray.class);
result = constructor.newInstance((JSONArray) value);
} else if (VKAttachments.class.isAssignableFrom(fieldType)
&& value instanceof JSONArray) {
Constructor<?> constructor = fieldType.getConstructor(JSONArray.class);
result = constructor.newInstance((JSONArray) value);
} else if (VKList.class.equals(fieldType)) {
ParameterizedType genericTypes = (ParameterizedType) field.getGenericType();
Class<?> genericType = (Class<?>) genericTypes.getActualTypeArguments()[0];
if (VKApiModel.class.isAssignableFrom(genericType)
&& Parcelable.class.isAssignableFrom(genericType)
&& Identifiable.class.isAssignableFrom(genericType)) {
if (value instanceof JSONArray) {
result = new VKList((JSONArray) value, genericType);
} else if (value instanceof JSONObject) {
result = new VKList((JSONObject) value, genericType);
}
}
} else if (VKApiModel.class.isAssignableFrom(fieldType) && value instanceof JSONObject) {
result = ((VKApiModel) fieldType.newInstance()).parse((JSONObject) value);
}
field.set(object, result);
}
} catch (InstantiationException e) {
throw new JSONException(e.getMessage());
} catch (IllegalAccessException e) {
throw new JSONException(e.getMessage());
} catch (NoSuchMethodException e) {
throw new JSONException(e.getMessage());
} catch (InvocationTargetException e) {
throw new JSONException(e.getMessage());
} catch (NoSuchMethodError e) {
// Примечание Виталия:
// Вы не поверите, но у некоторых вендоров getFields() вызывает ВОТ ЭТО.
// Иногда я всерьез задумываюсь, правильно ли я поступил, выбрав Android в качестве
// платформы разработки.
throw new JSONException(e.getMessage());
}
}
return object;
}
public void set(T obj, long newValue) {
if (obj == null || obj.getClass() != tclass || cclass != null) fullCheck(obj);
synchronized (this) {
unsafe.putLong(obj, offset, newValue);
}
}
public long get(T obj) {
if (obj == null || obj.getClass() != tclass || cclass != null) fullCheck(obj);
synchronized (this) {
return unsafe.getLong(obj, offset);
}
}
public static <T> ModelType<T> typeOf(T instance) {
// TODO: should validate that clazz is of a non parameterized type
@SuppressWarnings("unchecked")
Class<T> clazz = (Class<T>) instance.getClass();
return of(clazz);
}
public Invokeable(String method, T target) throws NoSuchMethodException {
initialize(getMethod(method, target.getClass()), target);
}