1 /* 2 * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package vm.runtime.defmeth.shared.data; 25 26 import vm.runtime.defmeth.shared.data.AbstractVisitor; 27 import vm.runtime.defmeth.shared.data.method.param.*; 28 import vm.runtime.defmeth.shared.executor.AbstractReflectionTest; 29 30 /** 31 * Extracts a value from Param object. 32 * It is used when method is invoked using Reflection API 33 * or through MethodHandle.invokeWithArguments. 34 */ 35 public class ParamValueExtractor extends AbstractVisitor { 36 private Object value; 37 private AbstractReflectionTest methodInvokeTest; 38 39 public Object value() { 40 param.visit(this); 41 return value; 42 } 43 44 private Param param; 45 public ParamValueExtractor(AbstractReflectionTest methodInvokeTest, Param param) { 46 this.methodInvokeTest = methodInvokeTest; 47 this.param = param; } 48 49 @Override public void visitParamInt(IntParam i) { value = i.value(); } 50 @Override public void visitParamLong(LongParam l) { value = l.value(); } 51 @Override public void visitParamFloat(FloatParam f) { value = f.value(); } 52 @Override public void visitParamDouble(DoubleParam d) { value = d.value(); } 53 @Override public void visitParamString(StringParam str) { value = str.value(); } 54 @Override public void visitParamNull() { value = null; } 55 @Override public void visitParamNewInstance(NewInstanceParam type) { 56 try { 57 value = methodInvokeTest.resolve(type.clazz()).newInstance(); 58 } catch (InstantiationException | IllegalAccessException e) { 59 throw new Error(e); 60 } 61 } 62 }