code: /**
   * Copyright (c) 2005, Regents of the University of California
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * Redistributions of source code must retain the above copyright notice,
   * this list of conditions and the following disclaimer.
   *
   * Redistributions in binary form must reproduce the above copyright
   * notice, this list of conditions and the following disclaimer in the
   * documentation and/or other materials provided with the distribution.
   *
   * Neither the name of the University of California, Los Angeles nor the
   * names of its contributors may be used to endorse or promote products
   * derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package jintgen.isdl;
  
  import jintgen.isdl.parser.Token;
  import java.util.HashMap;
  import java.util.LinkedHashMap;
  
  /**
   * The <code>Item</code> class represents the base class of many different types of items
   * that can occur in an ISDL file. Each item has a unique name and a list of properties
   * associated with it.
   *
   * @author Ben L. Titzer
   */
  public class Item {
  
      /**
       * The <code>name</code> field stores a reference to the token that names this
       * item. The token contains information about which where in the file it occured.
       */
      public final Token name;
  
      /**
       * The <code>properties</code> field stores a reference to a hash map that can
       * retrieve the properties by their name.
       */
      public final HashMap<String, Property> properties;
  
      Item(Token n) {
          name = n;
          properties = new LinkedHashMap<String, Property>();
      }
  
      public String getName() {
          return name.image;
      }
  
      /**
       * The <code>addProperty()</code> method adds a property to this syntactic item. The
       * property can be retrieved by its name as a string.
       * @param p the property to add to this item
       */
      public void addProperty(Property p) {
          properties.put(p.name.image, p);
      }
  
      /**
       * The <code>getProperty()</code> method retrieves a property by its name, if it exists,
       * and returns it.
       * @param name the name of the property as a string
       * @return a reference to the property if it exists; null otherwise
       */
      public Property getProperty(String name) {
          return properties.get(name);
      }
  }
  