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package com.n1ght;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Array;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.HashMap;
import sun.reflect.ReflectionFactory;
public class ReflectTools {
public ReflectTools() {
}
public static void setAccessible(AccessibleObject member) throws Exception {
member.setAccessible(true);
}
public static Field getField(Class<?> clazz, String fieldName) {
Field field = null;
try {
field = clazz.getDeclaredField(fieldName);
setAccessible(field);
} catch (Exception var4) {
if (clazz.getSuperclass() != null) {
field = getField(clazz.getSuperclass(), fieldName);
}
}
return field;
}
public static void setFieldValue(Object obj, String fieldName, Object value) throws Exception {
Field field = getField(obj.getClass(), fieldName);
field.set(obj, value);
}
public static Object getFieldValue(Object obj, String fieldName) throws Exception {
Field field = getField(obj.getClass(), fieldName);
return field.get(obj);
}
public static Constructor<?> getFirstCtor(String name) throws Exception {
Constructor<?> ctor = Class.forName(name).getDeclaredConstructors()[0];
setAccessible(ctor);
return ctor;
}
public static Object newInstance(String className, Object... args) throws Exception {
return getFirstCtor(className).newInstance(args);
}
public static <T> T createWithoutConstructor(Class<T> classToInstantiate) throws Exception {
return createWithConstructor(classToInstantiate, Object.class, new Class[0], new Object[0]);
}
public static <T> T createWithConstructor(Class<T> classToInstantiate, Class<? super T> constructorClass, Class<?>[] consArgTypes, Object[] consArgs) throws Exception {
Constructor<? super T> objCons = constructorClass.getDeclaredConstructor(consArgTypes);
setAccessible(objCons);
Constructor<?> sc = ReflectionFactory.getReflectionFactory().newConstructorForSerialization(classToInstantiate, objCons);
setAccessible(sc);
return (T) sc.newInstance(consArgs);
}
public static HashMap<Object, Object> makeMap(Object v1, Object v2) throws Exception {
HashMap<Object, Object> s = new HashMap();
setFieldValue(s, "size", 2);
Class nodeC;
try {
nodeC = Class.forName("java.util.HashMap$Node");
} catch (ClassNotFoundException var6) {
nodeC = Class.forName("java.util.HashMap$EntAry");
}
Constructor<?> nodeCons = nodeC.getDeclaredConstructor(Integer.TYPE, Object.class, Object.class, nodeC);
nodeCons.setAccessible(true);
Object tbl = Array.newInstance(nodeC, 2);
Array.set(tbl, 0, nodeCons.newInstance(0, v1, v1, null));
Array.set(tbl, 1, nodeCons.newInstance(0, v2, v2, null));
setFieldValue(s, "table", tbl);
return s;
}
public static Method getDeclaredMethod(Class clazz, String methodName, Class[] params) {
Method method = null;
while(clazz != null) {
try {
method = clazz.getDeclaredMethod(methodName, params);
method.setAccessible(true);
break;
} catch (NoSuchMethodException var5) {
clazz = clazz.getSuperclass();
}
}
return method;
}
public static Method getMethod(Class clazz, String methodName, Class[] params) {
Method method = null;
while(clazz != null) {
try {
method = clazz.getMethod(methodName, params);
break;
} catch (NoSuchMethodException var5) {
clazz = clazz.getSuperclass();
}
}
return method;
}
}
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