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.ndm.cdm;
18  
19  import org.orekit.files.ccsds.definitions.Units;
20  import org.orekit.files.ccsds.utils.ContextBinding;
21  import org.orekit.files.ccsds.utils.lexical.ParseToken;
22  import org.orekit.files.ccsds.utils.lexical.TokenType;
23  import org.orekit.utils.units.Unit;
24  
25  /** Keys for {@link StateVector CDM state vector} entries.
26   * @author Melina Vanel
27   * @since 11.2
28   */
29  public enum StateVectorKey {
30  
31      /** Comment entry. */
32      COMMENT((token, context, container) ->
33              token.getType() == TokenType.ENTRY ? container.addComment(token.getContentAsNormalizedString()) : true),
34  
35      /** Object Position Vector X component. */
36      X((token, context, container) -> token.processAsDouble(Unit.KILOMETRE, context.getParsedUnitsBehavior(),
37                                                               container::setX)),
38      /** Object Position Vector Y component. */
39      Y((token, context, container) -> token.processAsDouble(Unit.KILOMETRE, context.getParsedUnitsBehavior(),
40                                                               container::setY)),
41      /** Object Position Vector Z component. */
42      Z((token, context, container) -> token.processAsDouble(Unit.KILOMETRE, context.getParsedUnitsBehavior(),
43                                                               container::setZ)),
44      /** Object Velocity Vector X component. */
45      X_DOT((token, context, container) -> token.processAsDouble(Units.KM_PER_S, context.getParsedUnitsBehavior(),
46                                                               container::setXdot)),
47      /** Object Velocity Vector Y component. */
48      Y_DOT((token, context, container) -> token.processAsDouble(Units.KM_PER_S, context.getParsedUnitsBehavior(),
49                                                               container::setYdot)),
50      /** Object Velocity Vector Z component. */
51      Z_DOT((token, context, container) -> token.processAsDouble(Units.KM_PER_S, context.getParsedUnitsBehavior(),
52                                                               container::setZdot));
53  
54      /** Processing method. */
55      private final transient TokenProcessor processor;
56  
57      /** Simple constructor.
58       * @param processor processing method
59       */
60      StateVectorKey(final TokenProcessor processor) {
61          this.processor = processor;
62      }
63  
64      /** Process one token.
65       * @param token token to process
66       * @param context context binding
67       * @param container container to fill
68       * @return true of token was accepted
69       */
70      public boolean process(final ParseToken token, final ContextBinding context, final StateVector container) {
71          return processor.process(token, context, container);
72      }
73  
74      /** Interface for processing one token. */
75      interface TokenProcessor {
76          /** Process one token.
77           * @param token token to process
78           * @param context context binding
79           * @param container container to fill
80           * @return true of token was accepted
81           */
82          boolean process(ParseToken token, ContextBinding context, StateVector container);
83      }
84  
85  }