content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE 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 for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * reserved comment block
   * DO NOT REMOVE OR ALTER!
   */
  /*
   * Copyright 2001-2004 The Apache Software Foundation.
   *
   * 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.
   */
  /*
   * $Id: NthIterator.java,v 1.2.4.1 2005/09/06 09:57:04 pvedula Exp $
   */
  
  package jaxp.sun.org.apache.xalan.internal.xsltc.dom;
  
  import jaxp.sun.org.apache.xalan.internal.xsltc.runtime.BasisLibrary;
  import jaxp.sun.org.apache.xml.internal.dtm.DTMAxisIterator;
  import jaxp.sun.org.apache.xml.internal.dtm.ref.DTMAxisIteratorBase;
  
  /**
   * @author Jacek Ambroziak
   * @author Morten Jorgensen
   */
  public final class NthIterator extends DTMAxisIteratorBase {
      // ...[N]
      private DTMAxisIterator _source;
      private final int _position;
      private boolean _ready;
  
      public NthIterator(DTMAxisIterator source, int n) {
          _source = source;
          _position = n;
      }
  
      public void setRestartable(boolean isRestartable) {
          _isRestartable = isRestartable;
          _source.setRestartable(isRestartable);
      }
  
      public DTMAxisIterator cloneIterator() {
          try {
              final NthIterator clone = (NthIterator) super.clone();
              clone._source = _source.cloneIterator();    // resets source
              clone._isRestartable = false;
              return clone;
          }
          catch (CloneNotSupportedException e) {
              BasisLibrary.runTimeError(BasisLibrary.ITERATOR_CLONE_ERR,
                                        e.toString());
              return null;
          }
      }
  
      public int next() {
          if (_ready) {
              _ready = false;
              return _source.getNodeByPosition(_position);
          }
          return DTMAxisIterator.END;
          /*
          if (_ready && _position > 0) {
              final int pos = _source.isReverse()
                                         ? _source.getLast() - _position + 1
                                         : _position;
  
              _ready = false;
              int node;
              while ((node = _source.next()) != DTMAxisIterator.END) {
                  if (pos == _source.getPosition()) {
                      return node;
                  }
              }
          }
          return DTMAxisIterator.END;
          */
      }
  
      public DTMAxisIterator setStartNode(final int node) {
          if (_isRestartable) {
              _source.setStartNode(node);
              _ready = true;
          }
          return this;
      }
  
      public DTMAxisIterator reset() {
          _source.reset();
          _ready = true;
          return this;
      }
  
      public int getLast() {
          return 1;
      }
  
      public int getPosition() {
          return 1;
      }
  
      public void setMark() {
          _source.setMark();
      }
  
      public void gotoMark() {
          _source.gotoMark();
      }
  }
  