/*
 * JAME 6.2.1
 * http://jame.sourceforge.net
 *
 * Copyright 2001, 2016 Andrea Medeghini
 *
 * This file is part of JAME.
 *
 * JAME is an application for creating fractals and other graphics artifacts.
 *
 * JAME 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 3 of the License, or
 * (at your option) any later version.
 *
 * JAME 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 JAME.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package net.sf.jame.contextfree.parser;

import java.util.Random;

class Rand64 {
	private static long RAND64_SEED  = 0x3DF41234;
	private Random random = new Random();
    private long seed;

	public Rand64() {
		this(RAND64_SEED);
	}

	public Rand64(long seed) {
		this.seed = seed;
		random.setSeed(seed);
	}

	public double getDouble() {
		return random.nextDouble();
	}
	
	public long getLong() {
		return random.nextLong();
	}
	
	public long getPositive() {
		return random.nextLong();
	}
	
	public long getUnsigned() {
		return random.nextLong();
	}
    
	public void setSeed(long seed) {
		this.seed = seed;
		random.setSeed(this.seed);
	}
	
	public void init() {
		setSeed(RAND64_SEED);
	}
    
	public void xorString(String t, int[] i) {
	    for (int j = 0; j < t.length(); j++) {
	        xorChar(t.charAt(j), j);
	        bump();
	        i[0] = (i[0] + 1) & 7;
	    }
	}
    
    public void xorChar(char c, long i) {
        seed ^= ((long)c) << (i * 8);
	}
    
    public void bump() {
	}

	public void add(Rand64 rand) {
		// TODO Auto-generated method stub
		
	}
}