org.sosy_lab.cpachecker.util.reachingdef.ReachingDefinitionStorage.java Source code

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Here is the source code for org.sosy_lab.cpachecker.util.reachingdef.ReachingDefinitionStorage.java

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/*
 *  CPAchecker is a tool for configurable software verification.
 *  This file is part of CPAchecker.
 *
 *  Copyright (C) 2007-2014  Dirk Beyer
 *  All rights reserved.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *
 *  CPAchecker web page:
 *    http://cpachecker.sosy-lab.org
 */
package org.sosy_lab.cpachecker.util.reachingdef;

import java.io.IOException;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

import org.sosy_lab.cpachecker.cpa.reachdef.ReachingDefState.DefinitionPoint;
import org.sosy_lab.cpachecker.util.globalinfo.GlobalInfo;

import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Maps;

public class ReachingDefinitionStorage implements Serializable {

    private static final long serialVersionUID = 5248630359398001325L;

    private static ReachingDefinitionStorage instance = new ReachingDefinitionStorage();

    private List<Map<String, Set<DefinitionPoint>>> savedReachingDefinitions;
    private Map<Map<String, Set<DefinitionPoint>>, Integer> elementsToSave;
    private int nextId = 0;

    private ReachingDefinitionStorage() {
        GlobalInfo.getInstance().addHelperStorage(this);
    }

    public int saveMap(Map<String, Set<DefinitionPoint>> reachDefs) {
        if (elementsToSave == null) {
            elementsToSave = new HashMap<>();
        }
        if (elementsToSave.containsKey(reachDefs)) {
            return elementsToSave.get(reachDefs);
        }

        if (nextId == Integer.MAX_VALUE) {
            throw new IllegalStateException("More Elements must be stored than IDs are available");
        }
        elementsToSave.put(reachDefs, nextId);

        int result = nextId;
        nextId++;

        return result;
    }

    public Map<String, Set<DefinitionPoint>> getMap(int pId) {
        return savedReachingDefinitions.get(pId);
    }

    private void writeObject(java.io.ObjectOutputStream out) throws IOException {
        out.writeInt(elementsToSave.size());
        @SuppressWarnings("unchecked")
        Map<String, Set<DefinitionPoint>>[] array = new Map[elementsToSave.size()];
        for (Map<String, Set<DefinitionPoint>> elem : elementsToSave.keySet()) {
            array[elementsToSave.get(elem)] = elem;
        }

        for (Map<String, Set<DefinitionPoint>> elem : array) {
            out.writeInt(elem.size());

            for (Entry<String, Set<DefinitionPoint>> entry : elem.entrySet()) {
                String key = entry.getKey();
                out.writeObject(key);

                out.writeInt(entry.getValue().size());
                for (DefinitionPoint point : entry.getValue()) {
                    out.writeObject(point);
                }
            }
        }
    }

    private void readObject(java.io.ObjectInputStream in) throws IOException, ClassNotFoundException {
        int numElem, numKeys, numPoints;
        String key;
        DefinitionPoint[] set;
        Map<String, Set<DefinitionPoint>> map;

        numElem = in.readInt();
        savedReachingDefinitions = new ArrayList<>(numElem);

        for (int i = 0; i < numElem; i++) {
            numKeys = in.readInt();

            map = Maps.newHashMapWithExpectedSize(numKeys);
            for (int j = 0; j < numKeys; j++) {
                key = (String) in.readObject();

                numPoints = in.readInt();
                set = new DefinitionPoint[numPoints];
                for (int k = 0; k < numPoints; k++) {
                    set[k] = (DefinitionPoint) in.readObject();
                }

                map.put(key, ImmutableSet.copyOf(set));

            }
            savedReachingDefinitions.add(map);
        }
        instance.savedReachingDefinitions = savedReachingDefinitions;
    }

    public static ReachingDefinitionStorage getInstance() {
        return instance;
    }
}