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/*******************************************************************************
* Copyright (c) 2010-2013, Zoltan Ujhelyi, Istvan Rath and Daniel Varro
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-v20.html.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package tools.refinery.viatra.runtime.localsearch.operations.check;
import java.util.Arrays;
import java.util.List;
import java.util.function.Function;
import tools.refinery.viatra.runtime.localsearch.MatchingFrame;
import tools.refinery.viatra.runtime.localsearch.exceptions.LocalSearchException;
import tools.refinery.viatra.runtime.localsearch.matcher.ISearchContext;
import tools.refinery.viatra.runtime.localsearch.operations.CheckOperationExecutor;
import tools.refinery.viatra.runtime.localsearch.operations.ISearchOperation;
/**
* @author Zoltan Ujhelyi
* @noextend This class is not intended to be subclassed by clients.
*/
public class InequalityCheck implements ISearchOperation {
private class Executor extends CheckOperationExecutor {
@Override
protected boolean check(MatchingFrame frame, ISearchContext context) {
Object source = frame.getValue(sourceLocation);
Object target = frame.getValue(targetLocation);
if (source == null) {
throw new LocalSearchException("Source not bound.");
}
if (target == null) {
throw new LocalSearchException("Target not bound");
}
return !source.equals(target);
}
@Override
public ISearchOperation getOperation() {
return InequalityCheck.this;
}
}
int sourceLocation;
int targetLocation;
public InequalityCheck(int sourceLocation, int targetLocation) {
super();
this.sourceLocation = sourceLocation;
this.targetLocation = targetLocation;
}
@Override
public ISearchOperationExecutor createExecutor() {
return new Executor();
}
@Override
public String toString() {
return toString(Object::toString);
}
@Override
public String toString(Function<Integer, String> variableMapping) {
return "check "+variableMapping.apply(sourceLocation)+" != "+variableMapping.apply(targetLocation);
}
@Override
public List<Integer> getVariablePositions() {
return Arrays.asList(sourceLocation, targetLocation);
}
}
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