1/* 2 * Copyright 2016 Google Inc. All Rights Reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.google.turbine.bytecode; 18 19import java.io.PrintWriter; 20import java.io.StringWriter; 21import org.objectweb.asm.ClassReader; 22import org.objectweb.asm.util.Printer; 23import org.objectweb.asm.util.Textifier; 24import org.objectweb.asm.util.TraceClassVisitor; 25 26/** 27 * ASM-based test utilities, in their own class mostly to avoid namespace issues with e.g. {@link 28 * com.google.turbine.bytecode.ClassReader}. 29 */ 30public class AsmUtils { 31 public static String textify(byte[] bytes) { 32 Printer textifier = new Textifier(); 33 StringWriter sw = new StringWriter(); 34 new ClassReader(bytes) 35 .accept( 36 new TraceClassVisitor(null, textifier, new PrintWriter(sw, true)), 37 ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES | ClassReader.SKIP_CODE); 38 return sw.toString(); 39 } 40} 41