hu.bme.mit.theta.xsts.analysis.XstsOrd Maven / Gradle / Ivy

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Xsts Analysis subproject in the Theta model checking framework

There is a newer version: 6.5.2

/*
 *  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.xsts.analysis;

import hu.bme.mit.theta.analysis.PartialOrd;
import hu.bme.mit.theta.analysis.expr.ExprState;

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

public final class XstsOrd implements PartialOrd> {

    private final PartialOrd partialOrd;

    private XstsOrd(final PartialOrd partialOrd) {
        this.partialOrd = checkNotNull(partialOrd);
    }

    public static  XstsOrd create(final PartialOrd partialOrd) {
        return new XstsOrd<>(partialOrd);
    }

    @Override
    public boolean isLeq(XstsState state1, XstsState state2) {
        return state1.lastActionWasEnv() == state2.lastActionWasEnv()
                && state1.isInitialized() == state2.isInitialized()
                && partialOrd.isLeq(state1.getState(), state2.getState());
    }
}