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;
  
  import java.util.HashMap;
  
  import org.apache.asterix.lexergenerator.rulegenerators.RuleGenerator;
  import org.apache.asterix.lexergenerator.rulegenerators.RuleGeneratorAnythingUntil;
  import org.apache.asterix.lexergenerator.rulegenerators.RuleGeneratorCaseInsensitiveChar;
  import org.apache.asterix.lexergenerator.rulegenerators.RuleGeneratorChar;
  import org.apache.asterix.lexergenerator.rulegenerators.RuleGeneratorCharOrNothing;
  import org.apache.asterix.lexergenerator.rulegenerators.RuleGeneratorDigitSequence;
  import org.apache.asterix.lexergenerator.rulegenerators.RuleGeneratorNothing;
  import org.apache.asterix.lexergenerator.rulegenerators.RuleGeneratorSign;
  import org.apache.asterix.lexergenerator.rulegenerators.RuleGeneratorSignOrNothing;
  import org.apache.asterix.lexergenerator.rulegenerators.RuleGeneratorString;
  import org.apache.asterix.lexergenerator.rulegenerators.RuleGeneratorToken;
  
  public class NodeChainFactory {
      static private HashMap<String, RuleGenerator> ruleGenerators = new HashMap<String, RuleGenerator>();
  
      static {
          ruleGenerators.put("char", new RuleGeneratorChar());
          ruleGenerators.put("string", new RuleGeneratorString());
          ruleGenerators.put("anythingUntil", new RuleGeneratorAnythingUntil());
          ruleGenerators.put("signOrNothing", new RuleGeneratorSignOrNothing());
          ruleGenerators.put("sign", new RuleGeneratorSign());
          ruleGenerators.put("digitSequence", new RuleGeneratorDigitSequence());
          ruleGenerators.put("caseInsensitiveChar", new RuleGeneratorCaseInsensitiveChar());
          ruleGenerators.put("charOrNothing", new RuleGeneratorCharOrNothing());
          ruleGenerators.put("token", new RuleGeneratorToken());
          ruleGenerators.put("nothing", new RuleGeneratorNothing());
      }
  
      public static LexerNode create(String generator, String constructor) throws Exception {
          constructor = constructor.replace("@", "aux_");
          if (ruleGenerators.get(generator) == null)
              throw new Exception("Rule Generator not found for '" + generator + "'");
          return ruleGenerators.get(generator).generate(constructor);
      }
  }
  