net.sourceforge.plantuml.command.PSystemSingleLineFactory Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of plantuml-lgpl Show documentation
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 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 .
 *
 * 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 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.
 *
 * 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.command;

import java.util.Map;

import net.sourceforge.plantuml.AbstractPSystem;
import net.sourceforge.plantuml.ErrorUml;
import net.sourceforge.plantuml.ErrorUmlType;
import net.sourceforge.plantuml.core.Diagram;
import net.sourceforge.plantuml.core.DiagramType;
import net.sourceforge.plantuml.core.UmlSource;
import net.sourceforge.plantuml.error.PSystemErrorUtils;
import net.sourceforge.plantuml.text.StringLocated;
import net.sourceforge.plantuml.utils.LineLocation;
import net.sourceforge.plantuml.utils.StartUtils;
import net.sourceforge.plantuml.version.IteratorCounter2;

public abstract class PSystemSingleLineFactory extends PSystemAbstractFactory {

	protected abstract AbstractPSystem executeLine(UmlSource source, String line);

	protected PSystemSingleLineFactory() {
		super(DiagramType.UML);
	}

	@Override
	final public Diagram createSystem(UmlSource source, Map skinParam) {

		if (source.getTotalLineCount() != 3)
			return null;

		final IteratorCounter2 it = source.iterator2();
		if (source.isEmpty()) {
			final LineLocation location = it.next().getLocation();
			return buildEmptyError(source, location, it.getTrace());
		}

		final StringLocated startLine = it.next();
		if (StartUtils.isArobaseStartDiagram(startLine.getString()) == false)
			throw new UnsupportedOperationException();

		if (it.hasNext() == false)
			return buildEmptyError(source, startLine.getLocation(), it.getTrace());

		final StringLocated s = it.next();
		if (StartUtils.isArobaseEndDiagram(s.getString()))
			return buildEmptyError(source, s.getLocation(), it.getTrace());

		final AbstractPSystem sys = executeLine(source, s.getString());
		if (sys == null) {
			final ErrorUml err = new ErrorUml(ErrorUmlType.SYNTAX_ERROR, "Syntax Error?", 0, s.getLocation());
			// return PSystemErrorUtils.buildV1(source, err, null);
			return PSystemErrorUtils.buildV2(source, err, null, it.getTrace());
		}
		return sys;

	}

}