| /* |
| * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * 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). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package vm.runtime.defmeth.shared; |
| |
| import vm.runtime.defmeth.shared.data.method.body.CallMethod; |
| import vm.runtime.defmeth.shared.executor.MHInvokeWithArgsTest; |
| |
| import java.lang.invoke.MethodHandle; |
| import java.lang.invoke.MethodHandles; |
| import java.lang.invoke.MethodType; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| |
| /** |
| * Encapsulates test context and provides utility methods to invoke methods |
| * in that context through reflection. Should be loaded in the same class loader as all other test classes. |
| * It is needed for correct resolution of initiating class loader in case of reflection invocation scenario. |
| */ |
| public class TestContext { |
| public static Object invoke(Method m, Object obj, Object... args) |
| throws InvocationTargetException, IllegalAccessException |
| { |
| return m.invoke(obj, args); |
| } |
| |
| public static Object invokeWithArguments(CallMethod.Invoke invokeType, Class<?> declaringClass, |
| String methodName, MethodType type, Object... arguments) throws Throwable { |
| // Need to do method lookup in the right context |
| // Otherwise, ClassNotFoundException is thrown |
| MethodHandles.Lookup LOOKUP = MethodHandles.lookup(); |
| MethodHandle mh; |
| |
| // FYI: can't use switch over enum here, because to implement it javac produces auxiliary class TestContext$1 |
| // and it can't be accessed from the context where TestContext is loaded |
| if (invokeType == CallMethod.Invoke.VIRTUAL || invokeType == CallMethod.Invoke.INTERFACE) { |
| mh = LOOKUP.findVirtual(declaringClass, methodName, type); |
| } else if (invokeType == CallMethod.Invoke.SPECIAL) { |
| mh = LOOKUP.findSpecial(declaringClass, methodName, type, declaringClass); |
| } else if (invokeType == CallMethod.Invoke.STATIC) { |
| mh = LOOKUP.findStatic(declaringClass, methodName, type); |
| } else { |
| throw new Error("Unknown invoke instruction: "+invokeType); |
| } |
| |
| return mh.invokeWithArguments(arguments); |
| } |
| } |
| |