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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.zone.lu;

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

import java.util.ArrayList;
import java.util.Collection;

import hu.bme.mit.theta.analysis.InitFunc;
import hu.bme.mit.theta.analysis.zone.BoundFunc;
import hu.bme.mit.theta.analysis.zone.ZonePrec;
import hu.bme.mit.theta.analysis.zone.ZoneState;

final class LuZoneInitFunc implements InitFunc {

    private final InitFunc initFunc;

    private LuZoneInitFunc(final InitFunc initFunc) {
        this.initFunc = checkNotNull(initFunc);
    }

    public static LuZoneInitFunc create(final InitFunc initFunc) {
        return new LuZoneInitFunc(initFunc);
    }

    ////

    @Override
    public Collection getInitStates(final ZonePrec prec) {
        checkNotNull(prec);
        final Collection result = new ArrayList<>();
        final Collection subInitStates = initFunc.getInitStates(prec);
        for (final ZoneState subInitState : subInitStates) {
            final LuZoneState initState = LuZoneState.of(subInitState, BoundFunc.top());
            result.add(initState);
        }
        return result;
    }

}