java.lang.reflect.AccessibleSetterInvokerForJDK9 Maven / Gradle / Ivy

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A driver to allow deep interaction with the JVM without any restrictions

There is a newer version: 9.7.1

/*
 * This file is part of ToolFactory JVM driver.
 *
 * Hosted at: https://github.com/toolfactory/jvm-driver
 *
 * --
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2021-2023 Luke Hutchison, Roberto Gentili
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without
 * limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
 * LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
 * EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
 * OR OTHER DEALINGS IN THE SOFTWARE.
 */
package java.lang.reflect;

import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Method;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.util.function.BiConsumer;

@SuppressWarnings("unchecked")
public class AccessibleSetterInvokerForJDK9 implements BiConsumer {
	private static MethodHandle accessibleSetterMethodHandle;
	private static MethodHandles.Lookup methodHandleRetriever;
	
	static {
		try {
			Method accessibleSetterMethod = AccessibleObject.class.getDeclaredMethod("setAccessible0", boolean.class);
			accessibleSetterMethodHandle = methodHandleRetriever.unreflect(accessibleSetterMethod);
		} catch (Throwable exc) {
			throwException(exc);
		}
		
	}

	private static  void throwException(Throwable exc) throws E{
		throw (E)exc;
	}

	@Override
	public void accept(AccessibleObject accessibleObject, Boolean flag) {
		try {
			accessibleSetterMethodHandle.invokeWithArguments(accessibleObject, flag);
		} catch (Throwable exc) {
			throwException(exc);
		}		
	}

}