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// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
 * |
 * |      PlantUML : a free UML diagram generator
 * |
 * +=======================================================================
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 * (C) Copyright 2009-2024, Arnaud Roques
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 * Project Info:  https://plantuml.com
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 * If you like this project or if you find it useful, you can support us at:
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 *
 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the Apache Software License.
 *
 * Licensed 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
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
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 * messages are usually generated on welcome or error images and never on
 * functional diagrams.
 * See https://plantuml.com/professional if you want to remove them
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 * Images (whatever their format : PNG, SVG, EPS...) generated by running PlantUML
 * are owned by the author of their corresponding sources code (that is, their
 * textual description in PlantUML language). Those images are not covered by
 * this APACHE license.
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 * The generated images can then be used without any reference to the APACHE license.
 * It is not even necessary to stipulate that they have been generated with PlantUML,
 * although this will be appreciated by the PlantUML team.
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 * There is an exception : if the textual description in PlantUML language is also covered
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 * This is the IGY distribution (Install GraphViz by Yourself).
 * You have to install GraphViz and to setup the GRAPHVIZ_DOT environment variable
 * (see https://plantuml.com/graphviz-dot )
 *
 * Icons provided by OpenIconic :  https://useiconic.com/open
 * Archimate sprites provided by Archi :  http://www.archimatetool.com
 * Stdlib AWS provided by https://github.com/milo-minderbinder/AWS-PlantUML
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 * ASCIIMathML (c) Peter Jipsen http://www.chapman.edu/~jipsen
 * ASCIIMathML (c) David Lippman http://www.pierce.ctc.edu/dlippman
 * CafeUndZopfli ported by Eugene Klyuchnikov https://github.com/eustas/CafeUndZopfli
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 * Themes (c) by Brett Schwarz https://github.com/bschwarz/puml-themes
 * Twemoji (c) by Twitter at https://twemoji.twitter.com/
 *
 */
package net.sourceforge.plantuml.argon2.model;

import static net.sourceforge.plantuml.argon2.Constants.ARGON2_BLOCK_SIZE;
import static net.sourceforge.plantuml.argon2.Constants.ARGON2_QWORDS_IN_BLOCK;

import java.util.Arrays;

import net.sourceforge.plantuml.argon2.Util;

public class Block {
    // ::remove folder when __HAXE__

	/* 128 * 8 Byte QWords */
	public long[] v;

	public Block() {
		v = new long[ARGON2_QWORDS_IN_BLOCK];
	}

	public void fromBytes(byte[] input) {
		assert (input.length == ARGON2_BLOCK_SIZE);

		for (int i = 0; i < v.length; i++) {
			byte[] slice = Arrays.copyOfRange(input, i * 8, (i + 1) * 8);
			v[i] = Util.littleEndianBytesToLong(slice);
		}
	}

	public byte[] toBytes() {
		byte[] result = new byte[ARGON2_BLOCK_SIZE];

		for (int i = 0; i < v.length; i++) {
			byte[] bytes = Util.longToLittleEndianBytes(v[i]);
			System.arraycopy(bytes, 0, result, i * bytes.length, bytes.length);
		}

		return result;
	}

	public void copyBlock(Block other) {
		System.arraycopy(other.v, 0, v, 0, v.length);
	}

	public void xor(Block b1, Block b2) {
		for (int i = 0; i < v.length; i++) {
			v[i] = b1.v[i] ^ b2.v[i];
		}
	}

	public void xor(Block b1, Block b2, Block b3) {
		for (int i = 0; i < v.length; i++) {
			v[i] = b1.v[i] ^ b2.v[i] ^ b3.v[i];
		}
	}

	public void xorWith(Block other) {
		for (int i = 0; i < v.length; i++) {
			v[i] = v[i] ^ other.v[i];
		}
	}

	@Override
	public String toString() {
		StringBuilder result = new StringBuilder();
		for (long value : v) {
			result.append(Util.bytesToHexString(Util.longToLittleEndianBytes(value)));
		}

		return result.toString();
	}

	void clear() {
		Arrays.fill(v, 0);
	}
}