/*

 * Copyright (c) 2018, 2019, 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package org.graalvm.compiler.nodes.util;

import org.graalvm.compiler.core.common.type.IntegerStamp;

import org.graalvm.compiler.nodes.LogicNode;

import org.graalvm.compiler.nodes.NodeView;

import org.graalvm.compiler.nodes.ValueNode;

public abstract class IntegerHelper {

    protected final int bits;

    protected IntegerHelper(int bits) {

        this.bits = bits;

    }

    public abstract long upperBound(IntegerStamp stamp);

    public abstract long lowerBound(IntegerStamp stamp);

    public int compare(long a, long b) {

        return rawCompare(cast(a), cast(b));

    }

    public boolean isGreater(long a, long b) {

        return compare(a, b) > 0;

    }

    public boolean isSmaller(long a, long b) {

        return compare(a, b) < 0;

    }

    public boolean isGreaterEqual(long a, long b) {

        return compare(a, b) >= 0;

    }

    public boolean isSmallerEqual(long a, long b) {

        return compare(a, b) <= 0;

    }

    public long min(long a, long b) {

        return rawMin(cast(a), cast(b));

    }

    public long max(long a, long b) {

        return rawMax(cast(a), cast(b));

    }

    public abstract long cast(long a);

    public abstract long minValue();

    public abstract long maxValue();

    public abstract IntegerStamp stamp(long min, long max);

    public abstract LogicNode createCompareNode(ValueNode x, ValueNode y, NodeView view);

    protected abstract int rawCompare(long a, long b);

    protected abstract long rawMin(long a, long b);

    protected abstract long rawMax(long a, long b);

}