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Xta Analysis subproject in the Theta model checking framework

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/*
 *  Copyright 2024 Budapest University of Technology and Economics
 *
 *  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 hu.bme.mit.theta.xta.analysis.expl;

import static com.google.common.base.Preconditions.checkNotNull;
import static java.util.Collections.singleton;

import java.util.Collection;

import hu.bme.mit.theta.analysis.TransFunc;
import hu.bme.mit.theta.analysis.expl.ExplState;
import hu.bme.mit.theta.analysis.unit.UnitPrec;
import hu.bme.mit.theta.xta.XtaSystem;
import hu.bme.mit.theta.xta.analysis.XtaAction;

final class XtaExplTransFunc implements TransFunc {

    private XtaExplTransFunc(final XtaSystem system) {
        // TODO remove parameter 'system'
        checkNotNull(system);
    }

    public static XtaExplTransFunc create(final XtaSystem system) {
        return new XtaExplTransFunc(system);
    }

    @Override
    public Collection getSuccStates(final ExplState state, final XtaAction action,
                                               final UnitPrec prec) {
        checkNotNull(state);
        checkNotNull(action);
        checkNotNull(prec);
        return singleton(XtaExplUtils.post(state, action));
    }

}