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.
   */
  
  package jaxp.sun.org.apache.xerces.internal.impl.xs.models;
  
  import jaxp.sun.org.apache.xerces.internal.impl.xs.SubstitutionGroupHandler;
  import jaxp.sun.org.apache.xerces.internal.impl.xs.XMLSchemaException;
  import jaxp.sun.org.apache.xerces.internal.xni.QName;
  
  import java.util.Vector;
  import java.util.ArrayList;
  
  /**
   * XSEmptyCM is a derivative of the abstract content model base class that
   * handles a content model with no chilren (elements).
   *
   * This model validated on the way in.
   *
   * @xerces.internal
   *
   * @author Elena Litani, Lisa Martin
   * @author IBM
   * @version $Id: XSEmptyCM.java,v 1.7 2009/07/28 15:18:11 spericas Exp $
   */
  public class XSEmptyCM  implements XSCMValidator {
  
      //
      // Constants
      //
  
      // start the content model: did not see any children
      private static final short STATE_START = 0;
  
      private static final Vector EMPTY = new Vector(0);
  
      //
      // Data
      //
  
      //
      // XSCMValidator methods
      //
  
      /**
       * This methods to be called on entering a first element whose type
       * has this content model. It will return the initial state of the content model
       *
       * @return Start state of the content model
       */
      public int[] startContentModel(){
          return (new int[] {STATE_START});
      }
  
  
      /**
       * The method corresponds to one transaction in the content model.
       *
       * @param elementName the qualified name of the element
       * @param currentState Current state
       * @param subGroupHandler the substitution group handler
       * @return element index corresponding to the element from the Schema grammar
       */
      public Object oneTransition (QName elementName, int[] currentState, SubstitutionGroupHandler subGroupHandler){
  
          // error state
          if (currentState[0] < 0) {
              currentState[0] = SUBSEQUENT_ERROR;
              return null;
          }
  
          currentState[0] = FIRST_ERROR;
          return null;
      }
  
  
      /**
       * The method indicates the end of list of children
       *
       * @param currentState Current state of the content model
       * @return true if the last state was a valid final state
       */
      public boolean endContentModel (int[] currentState){
          boolean isFinal =  false;
          int state = currentState[0];
  
          // restore content model state:
  
          // error
          if (state < 0) {
              return false;
          }
  
  
          return true;
      }
  
      /**
       * check whether this content violates UPA constraint.
       *
       * @param subGroupHandler the substitution group handler
       * @return true if this content model contains other or list wildcard
       */
      public boolean checkUniqueParticleAttribution(SubstitutionGroupHandler subGroupHandler) throws XMLSchemaException {
          return false;
      }
  
      /**
       * Check which elements are valid to appear at this point. This method also
       * works if the state is in error, in which case it returns what should
       * have been seen.
       *
       * @param state  the current state
       * @return       a Vector whose entries are instances of
       *               either XSWildcardDecl or XSElementDecl.
       */
      public Vector whatCanGoHere(int[] state) {
          return EMPTY;
      }
  
      public ArrayList checkMinMaxBounds() {
          return null;
      }
  
  } // class XSEmptyCM
  