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