content: package com.taobao.arthas.compiler;
  
  /*-
   * #%L
   * compiler
   * %%
   * Copyright (C) 2017 - 2018 SkaLogs
   * %%
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   * 
   *      http://www.apache.org/licenses/LICENSE-2.0
   * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   * #L%
   */
  
  import javax.tools.SimpleJavaFileObject;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.OutputStream;
  import java.net.URI;
  import java.net.URISyntaxException;
  
  
  public class MemoryByteCode extends SimpleJavaFileObject {
      private static final char PKG_SEPARATOR = '.';
      private static final char DIR_SEPARATOR = '/';
      private static final String CLASS_FILE_SUFFIX = ".class";
  
      private ByteArrayOutputStream byteArrayOutputStream;
  
      public MemoryByteCode(String className) {
          super(URI.create("byte:///" + className.replace(PKG_SEPARATOR, DIR_SEPARATOR)
                  + Kind.CLASS.extension), Kind.CLASS);
      }
  
      public MemoryByteCode(String className, ByteArrayOutputStream byteArrayOutputStream)
              throws URISyntaxException {
          this(className);
          this.byteArrayOutputStream = byteArrayOutputStream;
      }
  
      @Override
      public OutputStream openOutputStream() throws IOException {
          if (byteArrayOutputStream == null) {
              byteArrayOutputStream = new ByteArrayOutputStream();
          }
          return byteArrayOutputStream;
      }
  
      public byte[] getByteCode() {
          return byteArrayOutputStream.toByteArray();
      }
  
      public String getClassName() {
          String className = getName();
          className = className.replace(DIR_SEPARATOR, PKG_SEPARATOR);
          className = className.substring(1, className.indexOf(CLASS_FILE_SUFFIX));
          return className;
      }
  
  }
  