1   /* Copyright 2002-2025 CS GROUP
2    * Licensed to CS GROUP (CS) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * CS licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *   http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.orekit.files.ccsds.utils.parsing;
18  
19  import org.orekit.errors.OrekitException;
20  import org.orekit.errors.OrekitMessages;
21  import org.orekit.files.ccsds.utils.lexical.ParseToken;
22  import org.orekit.files.ccsds.utils.lexical.TokenType;
23  
24  /**
25   * Special {@link ProcessingState} that always generate an error message.
26   *
27   * @author Luc Maisonobe
28   * @since 11.0
29   */
30  public class ErrorState implements ProcessingState {
31  
32      /** Empty constructor.
33       * <p>
34       * This constructor is not strictly necessary, but it prevents spurious
35       * javadoc warnings with JDK 18 and later.
36       * </p>
37       * @since 12.0
38       */
39      public ErrorState() {
40          // nothing to do
41      }
42  
43      /** {@inheritDoc}
44       * <p>
45       * This method always generate an error, as no data is expected in this state.
46       * </p>
47       */
48      @Override
49      public boolean processToken(final ParseToken token) {
50          if (token.getType() == TokenType.RAW_LINE) {
51              throw new OrekitException(OrekitMessages.UNEXPECTED_DATA_AT_LINE_IN_FILE,
52                                        token.getLineNumber(), token.getFileName());
53          } else {
54              throw new OrekitException(OrekitMessages.CCSDS_UNEXPECTED_KEYWORD,
55                                        token.getLineNumber(), token.getFileName(), token.getName());
56          }
57      }
58  
59  }