Node.java

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/*
 * Gridarta MMORPG map editor for Crossfire, Daimonin and similar games.
 * Copyright (C) 2000-2015 The Gridarta Developers.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

package net.sf.gridarta.textedit.textarea.tokenmarker;

import net.sf.gridarta.textedit.textarea.Token;
import org.jetbrains.annotations.Nullable;

public class Node {

    private static final char MIN = 'A';

    private static final char MAX = 'z';

    @SuppressWarnings("RedundantFieldInitialization")
    private byte id = Token.NULL;

    private final Node[] nodes = new Node[(int) MAX - (int) MIN + 1];

    public Node define(final char ch) {
        final int index = (int) ch - (int) MIN;
        if (nodes[index] == null) {
            nodes[index] = new Node();
        }
        return nodes[index];
    }

    @Nullable
    public Node lookup(final char ch) {
        return MIN <= ch && ch <= MAX ? nodes[(int) ch - (int) MIN] : null;
    }

    public void setId(final byte id) {
        this.id = id;
    }

    public byte getId() {
        return id;
    }

}