// -----------------------------------------------------------------------
public void testSingleton() throws Exception {
Class cls = NullConverter.class;
assertEquals(false, Modifier.isPublic(cls.getModifiers()));
assertEquals(false, Modifier.isProtected(cls.getModifiers()));
assertEquals(false, Modifier.isPrivate(cls.getModifiers()));
Constructor con = cls.getDeclaredConstructor((Class[]) null);
assertEquals(1, cls.getDeclaredConstructors().length);
assertEquals(true, Modifier.isProtected(con.getModifiers()));
Field fld = cls.getDeclaredField("INSTANCE");
assertEquals(false, Modifier.isPublic(fld.getModifiers()));
assertEquals(false, Modifier.isProtected(fld.getModifiers()));
assertEquals(false, Modifier.isPrivate(fld.getModifiers()));
}
private static String getTypeMetadata(Class<?> clazz) {
StringBuilder sb = new StringBuilder();
if (clazz.isInterface()) {
sb.append("I ");
} else {
sb.append("C ");
}
if (Modifier.isStatic(clazz.getModifiers())) {
sb.append("S\n");
} else {
sb.append("I\n");
}
Class<?> baseClass = clazz.getSuperclass();
sb.append("B " + ((baseClass != null) ? baseClass.getName() : "").replace('.', '/') + "\n");
Method[] methods = clazz.getDeclaredMethods();
Arrays.sort(methods, methodComparator);
for (Method m : methods) {
int modifiers = m.getModifiers();
if (!Modifier.isStatic(modifiers)
&& (Modifier.isPublic(modifiers) || Modifier.isProtected(modifiers))) {
sb.append("M ");
sb.append(m.getName());
Class<?>[] params = m.getParameterTypes();
String sig = MethodResolver.getMethodSignature(m.getReturnType(), params);
sb.append(" ");
sb.append(sig);
int paramCount = params.length;
sb.append(" ");
sb.append(paramCount);
sb.append("\n");
}
}
Field[] fields = clazz.getDeclaredFields();
for (Field f : fields) {
int modifiers = f.getModifiers();
if (!Modifier.isStatic(modifiers)
&& (Modifier.isPublic(modifiers) || Modifier.isProtected(modifiers))) {
sb.append("F ");
sb.append(f.getName());
sb.append(" ");
String sig = MethodResolver.getTypeSignature(f.getType());
sb.append(sig);
sb.append(" 0\n");
}
}
String ret = sb.toString();
return ret;
}
public FieldDefinition(Field field) {
this.name = field.getName();
this.type = field.getType().getName();
this.isStatic = Modifier.isStatic(field.getModifiers());
this.isPublic =
!Modifier.isPrivate(field.getModifiers()) && !Modifier.isProtected(field.getModifiers());
}
private boolean printIfProtected(int mod) {
boolean present = Modifier.isProtected(mod);
if (present) {
writer.print("protected ");
}
return present;
}
/**
* Checks for final methods on the given {@code Class}, as well as package-visible methods across
* ClassLoaders, and writes warnings to the log for each one found.
*/
private void doValidateClass(Class<?> proxySuperClass, ClassLoader proxyClassLoader) {
if (Object.class != proxySuperClass) {
Method[] methods = proxySuperClass.getDeclaredMethods();
for (Method method : methods) {
int mod = method.getModifiers();
if (!Modifier.isStatic(mod)) {
if (Modifier.isFinal(mod)) {
logger.info(
"Unable to proxy method ["
+ method
+ "] because it is final: "
+ "All calls to this method via a proxy will NOT be routed to the target instance.");
} else if (!Modifier.isPublic(mod)
&& !Modifier.isProtected(mod)
&& !Modifier.isPrivate(mod)
&& proxyClassLoader != null
&& proxySuperClass.getClassLoader() != proxyClassLoader) {
logger.info(
"Unable to proxy method ["
+ method
+ "] because it is package-visible "
+ "across different ClassLoaders: All calls to this method via a proxy will "
+ "NOT be routed to the target instance.");
}
}
}
doValidateClass(proxySuperClass.getSuperclass(), proxyClassLoader);
}
}
AtomicReferenceFieldUpdaterImpl(
Class<T> tclass, Class<V> vclass, String fieldName, Class<?> caller) {
Field field = null;
Class fieldClass = null;
int modifiers = 0;
try {
field = tclass.getDeclaredField(fieldName);
modifiers = field.getModifiers();
sun.reflect.misc.ReflectUtil.ensureMemberAccess(caller, tclass, null, modifiers);
sun.reflect.misc.ReflectUtil.checkPackageAccess(tclass);
fieldClass = field.getType();
} catch (Exception ex) {
throw new RuntimeException(ex);
}
if (vclass != fieldClass) throw new ClassCastException();
if (vclass.isPrimitive()) throw new IllegalArgumentException("Must be reference type");
if (!Modifier.isVolatile(modifiers))
throw new IllegalArgumentException("Must be volatile type");
this.cclass = (Modifier.isProtected(modifiers) && caller != tclass) ? caller : null;
this.tclass = tclass;
if (vclass == Object.class) this.vclass = null;
else this.vclass = vclass;
offset = unsafe.objectFieldOffset(field);
}
/** Sets the access flag of a member */
@Override
protected void setAccessFlag(final Member m) {
final int mods = m.getModifiers();
final Class c = m.getDeclaringClass();
final int cmods = c.getModifiers();
final String pkg = this.importationManager.getCurrentPackage();
final String mp = getPackageName(c);
final boolean samePkg = pkg.equals(mp);
if (Modifier.isPublic(cmods) || samePkg) {
if (Modifier.isPublic(mods)) {
((AccessibleObject) m).setAccessible(true);
} else if (Modifier.isProtected(mods)) {
if (c.isAssignableFrom(this.declaringClass.getSuperclass()) || samePkg) {
((AccessibleObject) m).setAccessible(true);
}
} else if (!Modifier.isPrivate(mods)) {
if (samePkg) {
((AccessibleObject) m).setAccessible(true);
}
} else {
if (this.declaringClass == c || isInnerClass(this.declaringClass, c)) {
((AccessibleObject) m).setAccessible(true);
}
}
}
}
static Method[] getOverridableMethods(Class c) {
ArrayList<Method> list = new ArrayList<Method>();
HashSet<String> skip = new HashSet<String>();
while (c != null) {
Method[] methods = c.getDeclaredMethods();
for (int i = 0; i < methods.length; i++) {
String methodKey =
methods[i].getName() + getMethodSignature(methods[i], methods[i].getParameterTypes());
if (skip.contains(methodKey)) continue; // skip this method
int mods = methods[i].getModifiers();
if (Modifier.isStatic(mods)) continue;
if (Modifier.isFinal(mods)) {
// Make sure we don't add a final method to the list
// of overridable methods.
skip.add(methodKey);
continue;
}
if (Modifier.isPublic(mods) || Modifier.isProtected(mods)) {
list.add(methods[i]);
skip.add(methodKey);
}
}
c = c.getSuperclass();
}
return list.toArray(new Method[list.size()]);
}
@Test
public void checkThatConstructorIsProtected() {
for (Constructor<?> constr : Earth.class.getDeclaredConstructors()) {
assertTrue(
"Constructors should be protected to allow subclasses of singleton",
Modifier.isProtected(constr.getModifiers()));
}
}
/** java.lang.reflect.InvocationTargetException#InvocationTargetException() */
public void test_Constructor() throws Exception {
Constructor<InvocationTargetException> ctor =
InvocationTargetException.class.getDeclaredConstructor();
assertNotNull("Parameterless constructor does not exist.", ctor);
assertTrue("Constructor is not protected", Modifier.isProtected(ctor.getModifiers()));
// create an instance of a subtype using this constructor
SubInvocationTargetException subException = new SubInvocationTargetException();
}
/**
* Locates the entity manager field that should be used.
*
* <p>If a parent is defined, it must provide the field.
*
* <p>We generally expect the field to be named "entityManager" and be of type
* javax.persistence.EntityManager. We also require it to be public or protected, and annotated
* with @PersistenceContext. If there is an existing field which doesn't meet these latter
* requirements, we add an underscore prefix to the "entityManager" name and try again, until such
* time as we come up with a unique name that either meets the requirements or the name is not
* used and we will create it.
*
* @return the entity manager field (never returns null)
*/
public FieldMetadata getEntityManagerField() {
if (parent != null) {
// The parent is required to guarantee this is available
return parent.getEntityManagerField();
}
// Need to locate it ourself
int index = -1;
while (true) {
// Compute the required field name
index++;
final JavaSymbolName fieldSymbolName =
new JavaSymbolName(StringUtils.repeat("_", index) + "entityManager");
final FieldMetadata candidate = governorTypeDetails.getField(fieldSymbolName);
if (candidate != null) {
// Verify if candidate is suitable
if (!Modifier.isPublic(candidate.getModifier())
&& !Modifier.isProtected(candidate.getModifier())
&& (Modifier.TRANSIENT != candidate.getModifier())) {
// Candidate is not public and not protected and not simply a transient field (in which
// case subclasses
// will see the inherited field), so any subsequent subclasses won't be able to see it.
// Give up!
continue;
}
if (!candidate.getFieldType().equals(ENTITY_MANAGER)) {
// Candidate isn't an EntityManager, so give up
continue;
}
if (MemberFindingUtils.getAnnotationOfType(candidate.getAnnotations(), PERSISTENCE_CONTEXT)
== null) {
// Candidate doesn't have a PersistenceContext annotation, so give up
continue;
}
// If we got this far, we found a valid candidate
return candidate;
}
// Candidate not found, so let's create one
final List<AnnotationMetadataBuilder> annotations =
new ArrayList<AnnotationMetadataBuilder>();
final AnnotationMetadataBuilder annotationBuilder =
new AnnotationMetadataBuilder(PERSISTENCE_CONTEXT);
if (StringUtils.hasText(crudAnnotationValues.getPersistenceUnit())) {
annotationBuilder.addStringAttribute("unitName", crudAnnotationValues.getPersistenceUnit());
}
annotations.add(annotationBuilder);
final FieldMetadataBuilder fieldBuilder =
new FieldMetadataBuilder(
getId(), Modifier.TRANSIENT, annotations, fieldSymbolName, ENTITY_MANAGER);
return fieldBuilder.build();
}
}
/**
* Getter for visibility.
*
* @return String representing the visibility.
*/
public String getVisibility() {
String v = "public";
if (Modifier.isProtected(this.modifier)) {
v = "protected";
} else if (Modifier.isPrivate(this.modifier)) {
v = "private";
}
return v;
}
private static String stringVisibility(int modifiers) {
if (Modifier.isProtected(modifiers)) {
return "protected";
} else if (Modifier.isPublic(modifiers)) {
return "public";
} else {
return "";
}
}
/**
* Returns the visibility of the method as a character private: - public: + protected: # package:
* ~
*/
private char getVisibilityCharacter(Method method) {
// private
if (Modifier.isPrivate(method.getModifiers())) return '-';
// protected
if (Modifier.isProtected(method.getModifiers())) return '#';
// public
if (Modifier.isPublic(method.getModifiers())) return '+';
// package
return '~';
}
// 只有
public static boolean isAvailableModifier(Class<?> realClazz, Class<?> superClazz, Field field) {
int modifier = field.getModifiers();
// 不能是final的也不能是static的，
if (realClazz == superClazz) {
return !Modifier.isStatic(modifier) && !Modifier.isFinal(modifier);
} else { // 如果是父类的话还必须是public或者protect的范围
return !Modifier.isFinal(modifier)
&& !Modifier.isFinal(modifier)
&& (Modifier.isPublic(modifier) || Modifier.isProtected(modifier));
}
}
public String toDetailedString() {
Object bean = component;
if (bean == null) {
return "<null>";
}
TreeSet<String> treeSet = new TreeSet<String>();
Class clazz = bean.getClass();
Field[] fields = clazz.getDeclaredFields();
for (Field field : fields) {
StringBuilder str = new StringBuilder();
int modifiers = field.getModifiers();
if (Modifier.isPublic(modifiers)) {
str.append('+');
} else if (Modifier.isProtected(modifiers)) {
str.append('#');
} else if (Modifier.isPrivate(modifiers)) {
str.append('-');
} else {
str.append(' ');
}
str.append(field.getName()).append(':');
try {
Object value = field.get(bean);
if (value == null) {
str.append("<null>");
} else {
String valueString = value.toString();
if (valueString.length() > 250) {
valueString = valueString.substring(0, 250) + "...";
}
str.append(valueString);
}
} catch (IllegalAccessException ignore) {
str.append("N/A");
}
str.append('\n');
treeSet.add(htmlSafe(str.toString()));
}
StringBuilder resolve = new StringBuilder("<html>");
for (String s1 : treeSet) {
resolve.append(s1);
}
return resolve.toString();
}
private String GetVisibility(int modifiers) {
if (Modifier.isPrivate(modifiers)) {
return StaticStrings.Private;
}
if (Modifier.isProtected(modifiers)) {
return StaticStrings.Protected;
}
if (Modifier.isPublic(modifiers)) {
return StaticStrings.Public;
}
return StaticStrings.Package;
}
public class MethodUtility extends ObjectUtility<Method> {
public static final Predicate<Method> IS_PUBLIC_METHOD = o -> Modifier.isPublic(o.getModifiers());
public static final Predicate<Method> IS_PRIVATE_METHOD =
o -> Modifier.isPrivate(o.getModifiers());
public static final Predicate<Method> IS_PROTECTED_METHOD =
o -> Modifier.isProtected(o.getModifiers());
public static final Predicate<Method> IS_GETTER =
o -> o.getParameterCount() == 0 && o.getName().startsWith("get");
public static final Predicate<Method> IS_SETTER =
o -> o.getParameterCount() == 1 && o.getName().startsWith("set");
private final Object parent;
public MethodUtility(Method object, Object parent) {
super(object);
this.parent = parent;
}
/** @see Method#toString() */
@Override
public String toString() {
return map(Method::toString).orElse(null);
}
/**
* @see Method#invoke(Object, Object...)
* @throws IllegalAccessException This checked exception is thrown by the {@link Rethrower}.
* @throws IllegalArgumentException
* @throws InvocationTargetException This checked exception is thrown by the {@link Rethrower}.
*/
@SuppressWarnings({"JavaDoc", "unchecked"})
public <T> T invoke(Object... arguments) {
return wrap(o -> (T) o.invoke(parent, arguments));
}
public void makeAccessible() {
ifPresent(
method ->
$(method)
.filter(
m ->
!Modifier.isPublic(m.getModifiers())
|| !Modifier.isPublic(m.getDeclaringClass().getModifiers()))
.filter(m -> !m.isAccessible())
.ifPresent(m -> m.setAccessible(true)));
}
private <T> T wrap(CheckedFunction<Method, T> function) {
makeAccessible();
return map(o -> Rethrower.rethrow(function, o)).orElse(null);
}
}
public static Visibility buildVisibility(int javaSpecModifiers) {
if (Modifier.isPublic(javaSpecModifiers)) {
return Visibility.PUBLIC;
}
if (Modifier.isProtected(javaSpecModifiers)) {
return Visibility.PROTECTED;
}
if (Modifier.isPrivate(javaSpecModifiers)) {
return Visibility.PRIVATE;
}
return Visibility.PACKAGE_PRIVATE;
}
/**
* Returns true if a overrides b. Assumes signatures of a and b are the same and a's declaring
* class is a subclass of b's declaring class.
*/
private static boolean overrides(Method a, Method b) {
// See JLS section 8.4.8.1
int modifiers = b.getModifiers();
if (Modifier.isPublic(modifiers) || Modifier.isProtected(modifiers)) {
return true;
}
if (Modifier.isPrivate(modifiers)) {
return false;
}
// b must be package-private
return a.getDeclaringClass().getPackage().equals(b.getDeclaringClass().getPackage());
}
boolean isWithin(int modifiers, String scope) {
boolean pub = Modifier.isPublic(modifiers);
boolean pri = Modifier.isPrivate(modifiers);
boolean pro = Modifier.isProtected(modifiers);
boolean def = !pub & !pri & !pro;
if (PUBLIC.equals(scope)) return pub;
else if (PROTECTED.equals(scope)) return pub || pro;
else if (DEFAULT.equals(scope)) return def || pub || pro;
else
// private
return true;
}
/**
* Returns array of all methods that are accessible from given class, upto limit (usually <code>
* Object.class</code>). Abstract methods are ignored.
*/
public static Method[] getAccessibleMethods(Class clazz, Class limit) {
Package topPackage = clazz.getPackage();
List<Method> methodList = new ArrayList<Method>();
int topPackageHash = topPackage == null ? 0 : topPackage.hashCode();
boolean top = true;
do {
if (clazz == null) {
break;
}
Method[] declaredMethods = clazz.getDeclaredMethods();
for (Method method : declaredMethods) {
if (Modifier.isVolatile(method.getModifiers())) {
continue;
}
// if (Modifier.isAbstract(method.getModifiers())) {
// continue;
// }
if (top == true) { // add all top declared methods
methodList.add(method);
continue;
}
int modifier = method.getModifiers();
if (Modifier.isPrivate(modifier) == true) {
continue; // ignore super private methods
}
if (Modifier.isAbstract(modifier) == true) { // ignore super abstract methods
continue;
}
if (Modifier.isPublic(modifier) == true) {
addMethodIfNotExist(methodList, method); // add super public methods
continue;
}
if (Modifier.isProtected(modifier) == true) {
addMethodIfNotExist(methodList, method); // add super protected methods
continue;
}
// add super default methods from the same package
Package pckg = method.getDeclaringClass().getPackage();
int pckgHash = pckg == null ? 0 : pckg.hashCode();
if (pckgHash == topPackageHash) {
addMethodIfNotExist(methodList, method);
}
}
top = false;
} while ((clazz = clazz.getSuperclass()) != limit);
Method[] methods = new Method[methodList.size()];
for (int i = 0; i < methods.length; i++) {
methods[i] = methodList.get(i);
}
return methods;
}
static Method[] getOverridableMethods(Class c) {
ArrayList list = new ArrayList();
while (c != null) {
Method[] methods = c.getDeclaredMethods();
for (int i = 0; i < methods.length; i++) {
int mods = methods[i].getModifiers();
if (Modifier.isStatic(mods) || Modifier.isFinal(mods)) continue;
if (Modifier.isPublic(mods) || Modifier.isProtected(mods)) list.add(methods[i]);
}
c = c.getSuperclass();
}
return (Method[]) list.toArray(new Method[list.size()]);
}
private static Protection getProtection(int modifiers) {
Protection protection;
if (Modifier.isPublic(modifiers)) {
protection = PUBLIC;
} else if (Modifier.isPrivate(modifiers)) {
protection = PRIVATE;
} else if (Modifier.isProtected(modifiers)) {
protection = PROTECTED;
} else {
protection = DEFAULT;
}
return protection;
}
/**
* Returns true if the entity is accessible to the specified level of protection.
*
* @param modifiers the modifiers as returned by Member.getModifiers() or Class.getModifiers()
* @param level the level of protection
* @return if the Member is accessible to the specified level of protection.
* @see Member.getModifiers()
* @see Class.getModifiers()
*/
private static boolean isAccessible(int modifiers, int level) {
switch (level) {
case PUBLIC: // member is accessible if it has public access
return Modifier.isPublic(modifiers);
case PROTECTED: // accessible if member is protected
return Modifier.isProtected(modifiers);
case DEFAULT: // accessible if member is not public, protected
// or private
return (!Modifier.isPublic(modifiers)
&& !Modifier.isProtected(modifiers)
&& !Modifier.isPrivate(modifiers));
case PRIVATE: // accessible if member is private
return Modifier.isPrivate(modifiers);
default:
// cannot get here any more, since the access level is
// only used internally
throw new Error(
"Completion.isAccessible(int, int) "
+ "called with incorrect access level parameter:"
+ level);
} // switch
}
private static List<Method> getInheritedMethods(Class baseClass, List<Method> methods) {
Collections.addAll(methods, baseClass.getMethods());
Class currentClass = baseClass;
while (currentClass != null) {
Method[] protectedMethods = currentClass.getDeclaredMethods();
for (Method method : protectedMethods) {
if (method.getName().indexOf('$') != -1) continue;
if (Modifier.isProtected(method.getModifiers())
&& !containsEquivalentMethod(methods, method)) methods.add(method);
}
currentClass = currentClass.getSuperclass();
}
return methods;
}
protected boolean isVisible(final Class<?> baseClass, final Member element) {
if (baseClass == null || element == null) return false;
final int modifiers = element.getModifiers();
if (Modifier.isPublic(modifiers)) return true;
if (Modifier.isProtected(modifiers)) return true;
if (!Modifier.isPrivate(modifiers)
&& baseClass.getPackage().equals(element.getDeclaringClass().getPackage())) return true;
return false;
}
/**
* Gets the visibility modifiers for the property as defined by the getter and setter methods.
*
* @return the visibility modifier of the getter, the setter, or both depending on which exist
*/
public int getModifiers() {
MetaMethod getter = getGetter();
MetaMethod setter = getSetter();
if (setter != null && getter == null) return setter.getModifiers();
if (getter != null && setter == null) return getter.getModifiers();
int modifiers = getter.getModifiers() | setter.getModifiers();
int visibility = 0;
if (Modifier.isPublic(modifiers)) visibility = Modifier.PUBLIC;
if (Modifier.isProtected(modifiers)) visibility = Modifier.PROTECTED;
if (Modifier.isPrivate(modifiers)) visibility = Modifier.PRIVATE;
int states = getter.getModifiers() & setter.getModifiers();
states &= ~(Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE);
states |= visibility;
return states;
}
/** setModifiers - set the attribute values related to modifiers here */
protected void setModifiers() {
Field javaFieldTarget = (Field) getTarget();
// For JDK reflection, I don't think we can set the initializer
int modifiers = getSourceField().getModifiers();
javaFieldTarget.setStatic(java.lang.reflect.Modifier.isStatic(modifiers));
javaFieldTarget.setTransient(java.lang.reflect.Modifier.isTransient(modifiers));
javaFieldTarget.setVolatile(java.lang.reflect.Modifier.isVolatile(modifiers));
javaFieldTarget.setFinal(java.lang.reflect.Modifier.isFinal(modifiers));
// Set visibility
if (java.lang.reflect.Modifier.isPublic(modifiers))
javaFieldTarget.setJavaVisibility(JavaVisibilityKind.PUBLIC_LITERAL);
else if (java.lang.reflect.Modifier.isPrivate(modifiers))
javaFieldTarget.setJavaVisibility(JavaVisibilityKind.PRIVATE_LITERAL);
else if (java.lang.reflect.Modifier.isProtected(modifiers))
javaFieldTarget.setJavaVisibility(JavaVisibilityKind.PROTECTED_LITERAL);
else javaFieldTarget.setJavaVisibility(JavaVisibilityKind.PACKAGE_LITERAL);
}
public boolean isVisible(Member m) {
switch (this) {
case ANY:
return true;
case NONE:
return false;
case NON_PRIVATE:
return !Modifier.isPrivate(m.getModifiers());
case PROTECTED_AND_PUBLIC:
if (Modifier.isProtected(m.getModifiers())) {
return true;
}
// fall through to public case:
case PUBLIC_ONLY:
return Modifier.isPublic(m.getModifiers());
}
return false;
}
