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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;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;

import java.util.Collection;
import java.util.List;

import hu.bme.mit.theta.analysis.Prec;
import hu.bme.mit.theta.analysis.State;
import hu.bme.mit.theta.analysis.TransFunc;
import hu.bme.mit.theta.xta.XtaProcess.Loc;

final class XtaTransFunc implements
        TransFunc, XtaAction, P> {

    private final TransFunc transFunc;

    private XtaTransFunc(final TransFunc transFunc) {
        this.transFunc = checkNotNull(transFunc);
    }

    public static  XtaTransFunc create(
            final TransFunc transferFunc) {
        return new XtaTransFunc<>(transferFunc);
    }

    @Override
    public Collection> getSuccStates(final XtaState state, final XtaAction action,
                                                 final P prec) {
        checkNotNull(state);
        checkNotNull(action);
        checkNotNull(prec);
        checkArgument(state.getLocs().equals(action.getSourceLocs()));
        final List succLocs = action.getTargetLocs();
        final S subState = state.getState();
        final Collection succSubStates = transFunc.getSuccStates(subState, action,
                prec);
        return XtaState.collectionOf(succLocs, succSubStates);
    }

}