1 /* 2 * Copyright (c) 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 25 package org.graalvm.compiler.core.test; 26 27 import org.objectweb.asm.Opcodes; 28 29 public abstract class CustomizedBytecodePatternTest extends GraalCompilerTest implements Opcodes { 30 getClass(String className)31 protected Class<?> getClass(String className) throws ClassNotFoundException { 32 return new CachedLoader(CustomizedBytecodePatternTest.class.getClassLoader(), className).findClass(className); 33 } 34 35 private class CachedLoader extends ClassLoader { 36 37 final String className; 38 Class<?> loaded; 39 CachedLoader(ClassLoader parent, String className)40 CachedLoader(ClassLoader parent, String className) { 41 super(parent); 42 this.className = className; 43 } 44 45 @Override findClass(String name)46 protected Class<?> findClass(String name) throws ClassNotFoundException { 47 if (name.equals(className)) { 48 if (loaded == null) { 49 byte[] gen = generateClass(name.replace('.', '/')); 50 loaded = defineClass(name, gen, 0, gen.length); 51 } 52 return loaded; 53 } else { 54 return super.findClass(name); 55 } 56 } 57 58 } 59 generateClass(String internalClassName)60 protected abstract byte[] generateClass(String internalClassName); 61 62 } 63