1   /* Copyright 2002-2024 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.ndm.tdm;
18  
19  import org.orekit.files.ccsds.utils.ContextBinding;
20  import org.orekit.files.ccsds.utils.lexical.ParseToken;
21  import org.orekit.files.ccsds.utils.lexical.TokenType;
22  
23  
24  /** Keys for {@link Observation TDM observations} entries, except the measurements themselves.
25   * @author Maxime Journot
26   * @since 11.0
27   */
28  public enum TdmDataKey {
29  
30      /** Observation wrapper. */
31      observation((token, context, observationsBlock) -> observationsBlock.addObservationEpoch(null)),
32  
33      /** Comment entry. */
34      COMMENT((token, context, observationsBlock) ->
35              token.getType() == TokenType.ENTRY ? observationsBlock.addComment(token.getContentAsNormalizedString()) : true),
36  
37      /** Epoch entry. */
38      EPOCH((token, context, observationsBlock) -> token.processAsDate(observationsBlock::addObservationEpoch, context));
39  
40      /** Processing method. */
41      private final transient TokenProcessor processor;
42  
43      /** Simple constructor.
44       * @param processor processing method
45       */
46      TdmDataKey(final TokenProcessor processor) {
47          this.processor = processor;
48      }
49  
50      /** Process one token.
51       * @param token token to process
52       * @param context context binding
53       * @param observationsBlock observation block to fill
54       * @return true if token was accepted
55       */
56      public boolean process(final ParseToken token, final ContextBinding context,
57                             final ObservationsBlock observationsBlock) {
58          return processor.process(token, context, observationsBlock);
59      }
60  
61      /** Interface for processing one token. */
62      interface TokenProcessor {
63          /** Process one token.
64           * @param token token to process
65           * @param context context binding
66           * @param observationsBlock observation block to fill
67           * @return true if token was accepted
68           */
69          boolean process(ParseToken token, ContextBinding context, ObservationsBlock observationsBlock);
70      }
71  
72  }