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.section;
18  
19  import org.orekit.files.ccsds.utils.FileFormat;
20  import org.orekit.files.ccsds.utils.lexical.ParseToken;
21  import org.orekit.files.ccsds.utils.parsing.AbstractConstituentParser;
22  import org.orekit.files.ccsds.utils.parsing.ProcessingState;
23  
24  /** {@link ProcessingState} for structure of {@link FileFormat#KVN} CCSDS Messages.
25   * @author Luc Maisonobe
26   * @since 11.0
27   */
28  public class KvnStructureProcessingState implements ProcessingState {
29  
30      /** Parser for the complete message. */
31      private final AbstractConstituentParser<?, ?, ?> parser;
32  
33      /** Simple constructor.
34       * @param parser parser for the complete message
35       */
36      public KvnStructureProcessingState(final AbstractConstituentParser<?, ?, ?> parser) {
37          this.parser = parser;
38      }
39  
40      /** {@inheritDoc} */
41      @Override
42      public boolean processToken(final ParseToken token) {
43          try {
44              return token.getName() != null &&
45                     KvnStructureKey.valueOf(token.getName()).process(token, parser);
46          } catch (IllegalArgumentException iae) {
47              // ignored, we delegate handling this token to fallback state
48              return false;
49          }
50      }
51  
52  }