content: /*
   * Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
   * by Oracle in the LICENSE file that accompanied this code.
   *
   * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  package openjdk.tools.classfile;
  
  import java.io.IOException;
  import java.util.stream.IntStream;
  
  import openjdk.tools.classfile.ConstantPool.CONSTANT_Class_info;
  
  public class PermittedSubclasses_attribute extends Attribute {
  
      public int[] subtypes;
  
      PermittedSubclasses_attribute(ClassReader cr, int name_index, int length) throws IOException {
          super(name_index, length);
          int number_of_classes = cr.readUnsignedShort();
          subtypes = new int[number_of_classes];
          for (int i = 0; i < number_of_classes; i++)
              subtypes[i] = cr.readUnsignedShort();
      }
  
      public PermittedSubclasses_attribute(int name_index, int[] subtypes) {
          super(name_index, 2);
          this.subtypes = subtypes;
      }
  
      public CONSTANT_Class_info[] getSubtypes(ConstantPool constant_pool) throws ConstantPoolException {
          return IntStream.of(subtypes)
                  .mapToObj(i -> {
                      try {
                          return constant_pool.getClassInfo(i);
                      } catch (ConstantPoolException ex) {
                          throw new AssertionError(ex);
                      }
                  }).toArray(CONSTANT_Class_info[]::new);
      }
  
      @Override
      public <R, D> R accept(Visitor<R, D> visitor, D data) {
          return visitor.visitPermittedSubclasses(this, data);
      }
  }
  