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PlantUML is a component that allows to quickly write diagrams from text.
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// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
 * |
 * |      PlantUML : a free UML diagram generator
 * |
 * +=======================================================================
 *
 * (C) Copyright 2009-2024, Arnaud Roques
 *
 * Project Info:  https://plantuml.com
 *
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 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * PlantUML 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 Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see .
 *
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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 LGPL license.
 *
 * The generated images can then be used without any reference to the LGPL license.
 * It is not even necessary to stipulate that they have been generated with PlantUML,
 * although this will be appreciated by the PlantUML team.
 *
 * There is an exception : if the textual description in PlantUML language is also covered
 * by any license, then the generated images are logically covered
 * by the very same license.
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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
 * Stdlib Icons provided https://github.com/tupadr3/plantuml-icon-font-sprites
 * 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
 * Brotli (c) by the Brotli Authors https://github.com/google/brotli
 * 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_SYNC_POINTS;

import net.sourceforge.plantuml.argon2.Argon2;

public class Instance {

	public Block[] memory;
	private int version;
	private int iterations;
	private int segmentLength;
	private int laneLength;
	private int lanes;

	private Argon2Type type;

	public Instance(Argon2 argon2) {
		this.version = argon2.getVersion();
		this.iterations = argon2.getIterations();
		this.lanes = argon2.getLanes();
		this.type = argon2.getType();

		/* 2. Align memory size */
		/* Minimum memoryBlocks = 8L blocks, where L is the number of lanes */
		int memoryBlocks = argon2.getMemory();

		if (memoryBlocks < 2 * ARGON2_SYNC_POINTS * argon2.getLanes()) {
			memoryBlocks = 2 * ARGON2_SYNC_POINTS * argon2.getLanes();
		}

		this.segmentLength = memoryBlocks / (argon2.getLanes() * ARGON2_SYNC_POINTS);
		this.laneLength = segmentLength * ARGON2_SYNC_POINTS;
		/* Ensure that all segments have equal length */
		memoryBlocks = segmentLength * (argon2.getLanes() * ARGON2_SYNC_POINTS);

		initMemory(memoryBlocks);
	}

	private void initMemory(int memoryBlocks) {
		this.memory = new Block[memoryBlocks];

		for (int i = 0; i < memory.length; i++) {
			memory[i] = new Block();
		}
	}

	public void clear() {
		for (Block b : memory) {
			b.clear();
		}

		memory = null;
	}

	public Block[] getMemory() {
		return memory;
	}

	public int getVersion() {
		return version;
	}

	public int getIterations() {
		return iterations;
	}

	public int getSegmentLength() {
		return segmentLength;
	}

	public int getLaneLength() {
		return laneLength;
	}

	public int getLanes() {
		return lanes;
	}

	public Argon2Type getType() {
		return type;
	}
}