org.javimmutable.collections.tree.DeleteMergeResult Maven / Gradle / Ivy

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///###////////////////////////////////////////////////////////////////////////
//
// Burton Computer Corporation
// http://www.burton-computer.com
//
// Copyright (c) 2017, Burton Computer Corporation
// All rights reserved.
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//     Redistributions in binary form must reproduce the above copyright
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package org.javimmutable.collections.tree;

import javax.annotation.concurrent.Immutable;

@Immutable
public class DeleteMergeResult
{
    public final TreeNode left;
    public final TreeNode right;

    public DeleteMergeResult(TreeNode left)
    {
        this(left, null);
    }

    public DeleteMergeResult(TreeNode left,
                             TreeNode right)
    {
        this.left = left;
        this.right = right;
    }

    public TreeNode createTwoNode()
    {
        return new TwoNode(left, right, left.getMaxKey(), right.getMaxKey());
    }

    public TreeNode createLeftTwoNode(TreeNode callerRight,
                                            K callerRightMax)
    {
        return new TwoNode(left,
                                 callerRight,
                                 left.getMaxKey(),
                                 callerRightMax);
    }

    public TreeNode createLeftThreeNode(TreeNode callerRight,
                                              K callerRightMax)
    {
        return new ThreeNode(left,
                                   right,
                                   callerRight,
                                   left.getMaxKey(),
                                   right.getMaxKey(),
                                   callerRightMax);
    }

    public TreeNode createRightTwoNode(TreeNode callerLeft,
                                             K callerLeftMax)
    {
        return new TwoNode(callerLeft,
                                 left,
                                 callerLeftMax,
                                 left.getMaxKey());
    }

    public TreeNode createRightThreeNode(TreeNode callerLeft,
                                               K callerLeftMax)
    {
        return new ThreeNode(callerLeft,
                                   left,
                                   right,
                                   callerLeftMax,
                                   left.getMaxKey(),
                                   right.getMaxKey());
    }

    @Override
    public String toString()
    {
        return String.format("[%s,%s]", left, right);
    }

    @SuppressWarnings("RedundantIfStatement")
    @Override
    public boolean equals(Object o)
    {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        DeleteMergeResult that = (DeleteMergeResult)o;

        if (left != null ? !left.equals(that.left) : that.left != null) {
            return false;
        }
        if (right != null ? !right.equals(that.right) : that.right != null) {
            return false;
        }

        return true;
    }

    @Override
    public int hashCode()
    {
        int result = left != null ? left.hashCode() : 0;
        result = 31 * result + (right != null ? right.hashCode() : 0);
        return result;
    }
}