Mercurial > hg > Members > kono > jpf-core

annotate src/main/gov/nasa/jpf/util/TraceElement.java @ 0:61d41facf527

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initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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3 * Administrator of the National Aeronautics and Space Administration.
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance with the License. You may obtain a copy of the License at
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9 *
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10 * http://www.apache.org/licenses/LICENSE-2.0.
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11 *
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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12 * Unless required by applicable law or agreed to in writing, software
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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17 */
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18
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19 package gov.nasa.jpf.util;
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20
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21 /**
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22 * encapsulates a listener-managed trace operation
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23 */
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24 public class TraceElement<T> {
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25 T op;
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26
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27 int stateId;
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28 TraceElement<T> prevElement;
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29 TraceElement<T> prevTransition;
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30
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31 public TraceElement (T op){
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32 this.op = op;
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33 }
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34
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35 public TraceElement<T> getPrevElement() {
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36 return prevElement;
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37 }
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38
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39 public T getOp() {
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40 return op;
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41 }
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42
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43 @Override
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44 public TraceElement<T> clone() {
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45 TraceElement<T> e = new TraceElement<T>(op);
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46 e.stateId = stateId;
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47
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48 // we don't clone the linkage
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49 e.prevElement = null;
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50 e.prevTransition = null;
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51
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52 return e;
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53 }
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54 }