content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one or more
   *  contributor license agreements.  See the NOTICE file distributed with
   *  this work for additional information regarding copyright ownership.
   *  The ASF licenses this file to You 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
   *
   *      https://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.
   *
   */
  package org.apache.tools.ant.taskdefs.optional.depend;
  
  import java.util.Iterator;
  import java.util.NoSuchElementException;
  
  /**
   * Iterator interface for iterating over a set of class files
   *
   */
  public interface ClassFileIterator extends Iterable<ClassFile> {
  
      /**
       * Get the next class file in the iteration
       *
       * @return the next class file in the iteration
       */
      ClassFile getNextClassFile();
  
      @Override
      default Iterator<ClassFile> iterator() {
  
          return new Iterator<ClassFile>() {
              ClassFile next;
              {
                  next = getNextClassFile();
              }
  
              @Override
              public boolean hasNext() {
                  return next != null;
              }
  
              @Override
              public ClassFile next() {
                  if (next == null) {
                      throw new NoSuchElementException();
                  }
                  try {
                      return next;
                  } finally {
                      next = getNextClassFile();
                  }
              }
  
          };
      }
  }
  