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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.
package net.sourceforge.plantuml.classdiagram.command;

import net.sourceforge.plantuml.StringUtils;
import net.sourceforge.plantuml.abel.Entity;
import net.sourceforge.plantuml.abel.LeafType;
import net.sourceforge.plantuml.classdiagram.ClassDiagram;
import net.sourceforge.plantuml.command.CommandExecutionResult;
import net.sourceforge.plantuml.command.SingleLineCommand2;
import net.sourceforge.plantuml.klimt.color.ColorParser;
import net.sourceforge.plantuml.klimt.color.ColorType;
import net.sourceforge.plantuml.klimt.color.Colors;
import net.sourceforge.plantuml.klimt.color.HColor;
import net.sourceforge.plantuml.klimt.color.NoSuchColorException;
import net.sourceforge.plantuml.klimt.creole.CreoleMode;
import net.sourceforge.plantuml.klimt.creole.Display;
import net.sourceforge.plantuml.klimt.font.FontParam;
import net.sourceforge.plantuml.plasma.Quark;
import net.sourceforge.plantuml.regex.IRegex;
import net.sourceforge.plantuml.regex.RegexConcat;
import net.sourceforge.plantuml.regex.RegexLeaf;
import net.sourceforge.plantuml.regex.RegexOptional;
import net.sourceforge.plantuml.regex.RegexOr;
import net.sourceforge.plantuml.regex.RegexResult;
import net.sourceforge.plantuml.stereo.Stereotag;
import net.sourceforge.plantuml.stereo.Stereotype;
import net.sourceforge.plantuml.url.Url;
import net.sourceforge.plantuml.url.UrlBuilder;
import net.sourceforge.plantuml.url.UrlMode;
import net.sourceforge.plantuml.utils.LineLocation;

public class CommandCreateClass extends SingleLineCommand2 {

	public static final String DISPLAY_WITH_GENERIC = "[%g](.+?)(?:\\<(" + GenericRegexProducer.PATTERN + ")\\>)?[%g]";
	public static final String CODE = "[^%s{}%g<>]+";
	public static final String CODE_NO_DOTDOT = "[^%s{}%g<>:]+";

	enum Mode {
		EXTENDS, IMPLEMENTS
	};

	public CommandCreateClass() {
		super(getRegexConcat());
	}

	private static IRegex getRegexConcat() {
		return RegexConcat.build(CommandCreateClass.class.getName(), RegexLeaf.start(), //
				new RegexLeaf("TYPE", //
						"(interface|enum|annotation|abstract[%s]+class|static[%s]+class|abstract|class|entity|circle|diamond|protocol|struct|exception|metaclass|stereotype)"), //
				RegexLeaf.spaceOneOrMore(), //
				new RegexOr(//
						new RegexConcat(//
								new RegexLeaf("DISPLAY1", DISPLAY_WITH_GENERIC), //
								RegexLeaf.spaceOneOrMore(), //
								new RegexLeaf("as"), //
								RegexLeaf.spaceOneOrMore(), //
								new RegexLeaf("CODE1", "(" + CODE + ")")), //
						new RegexConcat(//
								new RegexLeaf("CODE2", "(" + CODE + ")"), //
								RegexLeaf.spaceOneOrMore(), //
								new RegexLeaf("as"), //
								RegexLeaf.spaceOneOrMore(), //
								new RegexLeaf("DISPLAY2", DISPLAY_WITH_GENERIC)), //
						new RegexLeaf("CODE3", "(" + CODE + ")"), //
						new RegexLeaf("CODE4", "[%g]([^%g]+)[%g]")), //
				new RegexOptional(new RegexConcat(RegexLeaf.spaceZeroOrMore(),
						new RegexLeaf("GENERIC", "\\<(" + GenericRegexProducer.PATTERN + ")\\>"))), //
				RegexLeaf.spaceZeroOrMore(), //
				new RegexLeaf("TAGS1", Stereotag.pattern() + "?"), //
				RegexLeaf.spaceZeroOrMore(), //
				new RegexLeaf("STEREO", "(\\<\\<.*\\>\\>)?"), //
				RegexLeaf.spaceZeroOrMore(), //
				new RegexLeaf("TAGS2", Stereotag.pattern() + "?"), //
				RegexLeaf.spaceZeroOrMore(), //
				UrlBuilder.OPTIONAL, //
				RegexLeaf.spaceZeroOrMore(), //
				color().getRegex(), //
				RegexLeaf.spaceZeroOrMore(), //
				new RegexOptional(new RegexConcat(new RegexLeaf("##"),
						new RegexLeaf("LINECOLOR", "(?:\\[(dotted|dashed|bold)\\])?(\\w+)?"))), //
				new RegexOptional(new RegexConcat(RegexLeaf.spaceOneOrMore(),
						new RegexLeaf("EXTENDS",
								"(extends)[%s]+(" + CommandCreateClassMultilines.CODES + "|[%g]([^%g]+)[%g])"))), //
				new RegexOptional(new RegexConcat(RegexLeaf.spaceOneOrMore(),
						new RegexLeaf("IMPLEMENTS",
								"(implements)[%s]+(" + CommandCreateClassMultilines.CODES + "|[%g]([^%g]+)[%g])"))), //
				new RegexOptional(new RegexConcat(RegexLeaf.spaceZeroOrMore(), new RegexLeaf("\\{"),
						RegexLeaf.spaceZeroOrMore(), new RegexLeaf("\\}"))), //
				RegexLeaf.end());
	}

	private static ColorParser color() {
		return ColorParser.simpleColor(ColorType.BACK);
	}

	@Override
	protected CommandExecutionResult executeArg(ClassDiagram diagram, LineLocation location, RegexResult arg)
			throws NoSuchColorException {
		final String typeString = StringUtils.goUpperCase(arg.get("TYPE", 0));
		final LeafType type = LeafType.getLeafType(typeString);
		final String idShort = diagram.cleanId(arg.getLazzy("CODE", 0));
		final String displayString = arg.getLazzy("DISPLAY", 0);
		final String genericOption = arg.getLazzy("DISPLAY", 1);
		final String generic = genericOption != null ? genericOption : arg.get("GENERIC", 0);

		final String stereo = arg.get("STEREO", 0);

		final Quark quark = diagram.quarkInContext(false, idShort);

		Entity entity = quark.getData();

		if (entity == null) {
			Display display = Display.getWithNewlines(displayString);
			if (Display.isNull(display))
				display = Display.getWithNewlines(quark.getName()).withCreoleMode(CreoleMode.SIMPLE_LINE);
			entity = diagram.reallyCreateLeaf(quark, display, type, null);
		} else {
			if (entity.muteToType(type, null) == false)
				return CommandExecutionResult.error("Bad name");
		}

		final CommandExecutionResult check1 = diagram.checkIfPackageHierarchyIfOk(entity);
		if (check1.isOk() == false)
			return check1;

		diagram.setLastEntity(entity);
		if (stereo != null) {
			entity.setStereotype(Stereotype.build(stereo, diagram.getSkinParam().getCircledCharacterRadius(),
					diagram.getSkinParam().getFont(null, false, FontParam.CIRCLED_CHARACTER),
					diagram.getSkinParam().getIHtmlColorSet()));
			entity.setStereostyle(stereo);
		}
		if (generic != null)
			entity.setGeneric(generic);

		final String urlString = arg.get("URL", 0);
		if (urlString != null) {
			final UrlBuilder urlBuilder = new UrlBuilder(diagram.getSkinParam().getValue("topurl"), UrlMode.STRICT);
			final Url url = urlBuilder.getUrl(urlString);
			entity.addUrl(url);
		}
		entity.setCodeLine(location);

		Colors colors = color().getColor(arg, diagram.getSkinParam().getIHtmlColorSet());
		final String s = arg.get("LINECOLOR", 1);

		final HColor lineColor = s == null ? null : diagram.getSkinParam().getIHtmlColorSet().getColor(s);
		if (lineColor != null)
			colors = colors.add(ColorType.LINE, lineColor);

		if (arg.get("LINECOLOR", 0) != null)
			colors = colors.addLegacyStroke(arg.get("LINECOLOR", 0));

		entity.setColors(colors);

		CommandCreateClassMultilines.manageExtends("EXTENDS", diagram, arg, entity);
		CommandCreateClassMultilines.manageExtends("IMPLEMENTS", diagram, arg, entity);
		CommandCreateClassMultilines.addTags(entity, arg.getLazzy("TAGS", 0));

		if (typeString.contains("STATIC"))
			entity.setStatic(true);

		return CommandExecutionResult.ok();
	}

}




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