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Xsts Analysis subproject in the Theta model checking framework
/*
* 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.Prec;
import hu.bme.mit.theta.analysis.TransFunc;
import hu.bme.mit.theta.analysis.expr.ExprState;
import java.util.ArrayList;
import java.util.Collection;
import static com.google.common.base.Preconditions.checkNotNull;
public final class XstsTransFunc implements
TransFunc, XstsAction, P> {
private final TransFunc transFunc;
private XstsTransFunc(final TransFunc transFunc) {
this.transFunc = checkNotNull(transFunc);
}
public static XstsTransFunc create(
final TransFunc transFunc) {
return new XstsTransFunc<>(transFunc);
}
@Override
public Collection> getSuccStates(final XstsState state,
final XstsAction action, final P prec) {
checkNotNull(state);
checkNotNull(action);
checkNotNull(prec);
final Collection> succStates = new ArrayList<>();
final S subState = state.getState();
final boolean succWasLastEnv = !state.lastActionWasEnv();
final Collection subSuccStates = transFunc.getSuccStates(subState, action,
prec);
for (final S subSuccState : subSuccStates) {
final XstsState succState = XstsState.of(subSuccState, succWasLastEnv, true);
succStates.add(succState);
}
return succStates;
}
}