Difference.java

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/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

package org.openoffice.xmerge.merger;

public final class Difference {

    public static final int ADD = 1;

    public static final int DELETE = 2;

    public static final int CHANGE = 3;

    public static final int UNCHANGE = 4;

    private final int operation;

    private final int orgPosition;

    private final int modPosition;

    public Difference(int operation, int orgPosition,
                      int modPosition) {
        this.operation = operation;
        this.orgPosition = orgPosition;
        this.modPosition = modPosition;
    }

    public int getOperation() {
        return operation;
    }

    public int getOrgPosition() {
        return orgPosition;
    }

    public int getModPosition() {
        return modPosition;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj instanceof Difference) {
            Difference diff = (Difference) obj;
            if ((operation == diff.operation) &&
                (orgPosition == diff.orgPosition) &&
                (modPosition == diff.modPosition)) {
                return true;
            }
        }

        return false;
    }

    @Override
    public int hashCode() {
        return 0;
    }

    public String debug() {

        String opStr = "";

        switch (operation) {
            case ADD:
                opStr = "add";
                break;
            case DELETE:
                opStr = "del";
                break;
            case CHANGE:
                opStr = "chg";
                break;
            case UNCHANGE:
                opStr = "uch";
                break;
            default:
                break;
        }
        return "<diff orgPos=" + orgPosition + " modPos=" + modPosition +
               " op=" + opStr + ">";
    }

    @Override
    public String toString() {

        return orgPosition + " " + modPosition + " " + operation;
    }
}