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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.lang.reflect.Proxy;
import java.util.Arrays;
public class Main {
public static void main(String[] args) throws Exception {
System.loadLibrary(args[1]);
doTest();
}
public static void doTest() throws Exception {
testClass("java.lang.Object");
testClass("java.lang.String");
testClass("java.lang.Math");
testClass("java.util.List");
testClass(getProxyClass());
testClass(int.class);
testClass(double[].class);
testClassType(int.class);
testClassType(getProxyClass());
testClassType(Runnable.class);
testClassType(String.class);
testClassType(int[].class);
testClassType(Runnable[].class);
testClassType(String[].class);
testClassFields(Integer.class);
testClassFields(int.class);
testClassFields(String[].class);
testClassMethods(Integer.class);
testClassMethods(int.class);
testClassMethods(String[].class);
testClassStatus(int.class);
testClassStatus(String[].class);
testClassStatus(Object.class);
testClassStatus(TestForNonInit.class);
try {
System.out.println(TestForInitFail.dummy);
} catch (ExceptionInInitializerError e) {
}
testClassStatus(TestForInitFail.class);
testInterfaces(int.class);
testInterfaces(String[].class);
testInterfaces(Object.class);
testInterfaces(InfA.class);
testInterfaces(InfB.class);
testInterfaces(InfC.class);
testInterfaces(ClassA.class);
testInterfaces(ClassB.class);
testInterfaces(ClassC.class);
testClassLoader(String.class);
testClassLoader(String[].class);
testClassLoader(InfA.class);
testClassLoader(getProxyClass());
}
private static Class<?> proxyClass = null;
private static Class<?> getProxyClass() throws Exception {
if (proxyClass != null) {
return proxyClass;
}
proxyClass = Proxy.getProxyClass(Main.class.getClassLoader(), new Class[] { Runnable.class });
return proxyClass;
}
private static void testClass(String className) throws Exception {
Class<?> base = Class.forName(className);
testClass(base);
}
private static void testClass(Class<?> base) throws Exception {
String[] result = getClassSignature(base);
System.out.println(Arrays.toString(result));
int mod = getClassModifiers(base);
if (mod != base.getModifiers()) {
throw new RuntimeException("Unexpected modifiers: " + base.getModifiers() + " vs " + mod);
}
System.out.println(Integer.toHexString(mod));
}
private static void testClassType(Class<?> c) throws Exception {
boolean isInterface = isInterface(c);
boolean isArray = isArrayClass(c);
System.out.println(c.getName() + " interface=" + isInterface + " array=" + isArray);
}
private static void testClassFields(Class<?> c) throws Exception {
System.out.println(Arrays.toString(getClassFields(c)));
}
private static void testClassMethods(Class<?> c) throws Exception {
System.out.println(Arrays.toString(getClassMethods(c)));
}
private static void testClassStatus(Class<?> c) {
System.out.println(c + " " + Integer.toBinaryString(getClassStatus(c)));
}
private static void testInterfaces(Class<?> c) {
System.out.println(c + " " + Arrays.toString(getImplementedInterfaces(c)));
}
private static boolean IsBootClassLoader(ClassLoader l) {
// Hacky check for Android's fake boot classloader.
return l.getClass().getName().equals("java.lang.BootClassLoader");
}
private static void testClassLoader(Class<?> c) {
Object cl = getClassLoader(c);
System.out.println(c + " " + (cl != null ? cl.getClass().getName() : "null"));
if (cl == null) {
if (c.getClassLoader() != null && !IsBootClassLoader(c.getClassLoader())) {
throw new RuntimeException("Expected " + c.getClassLoader() + ", but got null.");
}
} else {
if (!(cl instanceof ClassLoader)) {
throw new RuntimeException("Unexpected \"classloader\": " + cl + " (" + cl.getClass() +
")");
}
if (cl != c.getClassLoader()) {
throw new RuntimeException("Unexpected classloader: " + c.getClassLoader() + " vs " + cl);
}
}
}
private static native String[] getClassSignature(Class<?> c);
private static native boolean isInterface(Class<?> c);
private static native boolean isArrayClass(Class<?> c);
private static native int getClassModifiers(Class<?> c);
private static native Object[] getClassFields(Class<?> c);
private static native Object[] getClassMethods(Class<?> c);
private static native Class[] getImplementedInterfaces(Class<?> c);
private static native int getClassStatus(Class<?> c);
private static native Object getClassLoader(Class<?> c);
private static class TestForNonInit {
public static double dummy = Math.random(); // So it can't be compile-time initialized.
}
private static class TestForInitFail {
public static int dummy = ((int)Math.random())/0; // So it throws when initializing.
}
public static interface InfA {
}
public static interface InfB extends InfA {
}
public static interface InfC extends InfB {
}
public abstract static class ClassA implements InfA {
}
public abstract static class ClassB extends ClassA implements InfB {
}
public abstract static class ClassC implements InfA, InfC {
}
}
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