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Open-source constraint solver.

There is a newer version: 4.10.16

/**
 * This file is part of choco-solver, http://choco-solver.org/
 *
 * Copyright (c) 2018, IMT Atlantique. All rights reserved.
 *
 * Licensed under the BSD 4-clause license.
 *
 * See LICENSE file in the project root for full license information.
 */
package org.chocosolver.solver.constraints.unary;

import org.chocosolver.solver.constraints.Constraint;
import org.chocosolver.solver.constraints.ConstraintsName;
import org.chocosolver.solver.constraints.Propagator;
import org.chocosolver.solver.variables.IntVar;
import org.chocosolver.util.objects.setDataStructures.iterable.IntIterableRangeSet;

/**
 * 

 *
 * @author Charles Prud'homme
 * @since 26 nov. 2010
 */
public class Member extends Constraint {

    private final IntVar var;
    private final int[] values;
    private final int lb, ub;


    // for JSON
    @SuppressWarnings("WeakerAccess")
    protected Member(IntVar var, int lb, int ub, int[] values, Propagator prop) {
        super(ConstraintsName.MEMBER, prop);
        this.var = var;
        this.values = values;
        this.lb = lb;
        this.ub = ub;
    }

    public Member(IntVar var, int[] values) {
        this(var, 0, 0, values, new PropMember(var, new IntIterableRangeSet(values)));
    }

    public Member(IntVar var, int lowerbound, int upperbound) {
        this(var, lowerbound, upperbound, null, new PropMember(var, new IntIterableRangeSet(lowerbound, upperbound)));
    }

    @Override
    public Constraint makeOpposite() {
        if (values == null) {
            return new NotMember(var, lb, ub);
        } else {
            return new NotMember(var, values);
        }
    }
}