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 * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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 */

package compiler.lib.ir_framework.shared;

import compiler.lib.ir_framework.IR;

import java.util.function.BiPredicate;

/**
 * Comparison result of parsing a {@link IR#counts} constraint with {@link ComparisonConstraintParser}
 *
 * @see ComparisonConstraintParser
 * @see IR#counts
 */
public class Comparison<T extends Comparable<T>> {
    private final T givenValue; // Right hand side
    private final BiPredicate<T, T> comparisonPredicate;
    private final String comparator;

    public enum Bound {
        LOWER,
        UPPER,
        EQUAL,
    }

    public Comparison(T givenValue, String comparator, BiPredicate<T, T> comparisonPredicate) {
        this.givenValue = givenValue;
        this.comparator = comparator;
        this.comparisonPredicate = comparisonPredicate;
    }

    public T getGivenValue() {
        return givenValue;
    }

    public String getComparator() {
        return comparator;
    }

    /**
     * Comparison: foundValue OP givenValue
     */
    public boolean compare(T foundValue) {
        return comparisonPredicate.test(foundValue, givenValue);
    }
}