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
   *
   *   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 org.apache.asterix.lexergenerator.rules;
  
  public class RuleEpsilon implements Rule {
  
      public RuleEpsilon clone() {
          return new RuleEpsilon();
      }
  
      @Override
      public String toString() {
          return "?";
      }
  
      @Override
      public int hashCode() {
          return 0;
      }
  
      @Override
      public boolean equals(Object o) {
          if (o == null)
              return false;
          if (o instanceof RuleEpsilon) {
              return true;
          }
          return false;
      }
  
      @Override
      public String javaAction() {
          return "";
      }
  
      @Override
      public String javaMatch(String action) {
          StringBuilder result = new StringBuilder();
          result.append("{").append(action).append("}");
          return result.toString();
      }
  }
  