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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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package com.sun.webkit;

import com.sun.javafx.reflect.MethodUtil;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedAction;
import com.sun.javafx.reflect.ReflectUtil;

Utility class to wrap method invocation.
/** * Utility class to wrap method invocation. */
public class MethodHelper { private static final boolean logAccessErrors = AccessController.doPrivileged((PrivilegedAction<Boolean>) () -> Boolean.getBoolean("sun.reflect.debugModuleAccessChecks")); private static final Module trampolineModule = MethodUtil.getTrampolineModule(); public static Object invoke(Method m, Object obj, Object[] params) throws InvocationTargetException, IllegalAccessException { // Check that the class in question is in a package that is open to // this module (or exported unconditionally). If so, then we will open // the containing package to the unnamed trampoline module. If not, // we will throw an IllegalAccessException in order to generate a // clearer error message. final Class<?> clazz = m.getDeclaringClass(); final String packageName = clazz.getPackage().getName(); final Module module = clazz.getModule(); final Module thisModule = MethodHelper.class.getModule(); try { // Verify that the module being called either exports the package // in question unconditionally or opens the package in question to // this module. if (!module.isExported(packageName)) { if (!module.isOpen(packageName, thisModule)) { throw new IllegalAccessException( "module " + thisModule.getName() + " cannot access class " + clazz.getName() + " (in module " + module.getName() + ") because module " + module.getName() + " does not open " + packageName + " to " + thisModule.getName()); } if (!module.isOpen(packageName, trampolineModule)) { ReflectUtil.checkPackageAccess(packageName); module.addOpens(packageName, trampolineModule); } } } catch (IllegalAccessException ex) { if (logAccessErrors) { ex.printStackTrace(System.err); } throw ex; } return MethodUtil.invoke(m, obj, params); } // Utility class, do not instantiate private MethodHelper() { } }