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A collection of equivalence oracles
/* Copyright (C) 2013-2018 TU Dortmund
* This file is part of LearnLib, http://www.learnlib.de/.
*
* 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.
*/
package de.learnlib.oracle.equivalence;
import java.util.Collection;
import de.learnlib.api.oracle.EquivalenceOracle;
import de.learnlib.api.query.DefaultQuery;
import net.automatalib.automata.UniversalDeterministicAutomaton;
import net.automatalib.automata.concepts.Output;
import net.automatalib.automata.fsa.DFA;
import net.automatalib.automata.transout.MealyMachine;
import net.automatalib.util.automata.Automata;
import net.automatalib.words.Word;
public class SimulatorEQOracle
implements EquivalenceOracle, I, D> {
private final UniversalDeterministicAutomaton reference;
private final Output output;
public & Output> SimulatorEQOracle(R reference) {
this.reference = reference;
this.output = reference;
}
@Override
public DefaultQuery findCounterExample(UniversalDeterministicAutomaton hypothesis,
Collection inputs) {
final Word sep = Automata.findSeparatingWord(reference, hypothesis, inputs);
if (sep == null) {
return null;
}
return new DefaultQuery<>(sep, output.computeOutput(sep));
}
public static class DFASimulatorEQOracle implements DFAEquivalenceOracle {
private final SimulatorEQOracle delegate;
public DFASimulatorEQOracle(DFA dfa) {
this.delegate = new SimulatorEQOracle<>(dfa);
}
@Override
public DefaultQuery findCounterExample(DFA hypothesis, Collection inputs) {
return delegate.findCounterExample(hypothesis, inputs);
}
}
public static class MealySimulatorEQOracle implements MealyEquivalenceOracle {
private final SimulatorEQOracle> delegate;
public MealySimulatorEQOracle(MealyMachine mealy) {
this.delegate = new SimulatorEQOracle<>(mealy);
}
@Override
public DefaultQuery> findCounterExample(MealyMachine hypothesis,
Collection inputs) {
return delegate.findCounterExample(hypothesis, inputs);
}
}
}