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PlantUML is a component that allows to quickly write diagrams from text.
There is a newer version: 1.2024.8
// 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
 *
 * If you like this project or if you find it useful, you can support us at:
 *
 * https://plantuml.com/patreon (only 1$ per month!)
 * https://plantuml.com/liberapay (only 1€ per month!)
 * https://plantuml.com/paypal
 *
 *
 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the Eclipse Public License.
 *
 * THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC
 * LICENSE ("AGREEMENT"). [Eclipse Public License - v 1.0]
 *
 * ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES
 * RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
 *
 * You may obtain a copy of the License at
 *
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * 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.
 *
 * PlantUML can occasionally display sponsored or advertising messages. Those
 * 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
 *
 * 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 EPL license.
 *
 * The generated images can then be used without any reference to the EPL 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.
 *
 * 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.style;

public class DarkString {

	private final String value1;
	private final String value2;
	private final int priority;

	public DarkString(String value1, String value2, int priority) {
		this.value1 = value1;
		this.value2 = value2;
		this.priority = priority;
	}

	public DarkString mergeWith(DarkString other) {
		if (other == null)
			return this;

		if ((this.value2 == null && other.value2 == null) || this.value1 == null && other.value1 == null) {
			if (isBigger(this.priority, other.priority))
				return this;
			return other;
		}
		if (this.value2 == null && other.value1 == null)
			return new DarkString(this.value1, other.value2, this.priority);
		if (other.value2 == null && this.value1 == null)
			return new DarkString(other.value1, this.value2, other.priority);

		if (isBigger(this.priority, other.priority))
			return this;
		return other;

//		System.err.println("this =" + this);
//		System.err.println("other=" + other);
//		throw new UnsupportedOperationException();
	}

	private static boolean isBigger(int a, int b) {
//		if (a > StyleLoader.DELTA_PRIORITY_FOR_STEREOTYPE)
//			a = StyleLoader.DELTA_PRIORITY_FOR_STEREOTYPE;
//		if (b > StyleLoader.DELTA_PRIORITY_FOR_STEREOTYPE)
//			b = StyleLoader.DELTA_PRIORITY_FOR_STEREOTYPE;
		return a > b;
	}

	public DarkString addPriority(int delta) {
		return new DarkString(value1, value2, delta + priority);
	}

	@Override
	public String toString() {
		return value1 + "/" + value2 + " (" + priority + ")";
	}

	public final String getValue1() {
		return value1;
	}

	public final String getValue2() {
		return value2;
	}

	public final int getPriority() {
		return priority;
	}

}