UBrexCommandElse.java

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 * PlantUML : a free UML diagram generator
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 * (C) Copyright 2009-2024, Arnaud Roques
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package net.sourceforge.plantuml.activitydiagram.command;

import com.plantuml.ubrex.UnicodeBracketedExpression;
import com.plantuml.ubrex.builder.UBrexConcat;
import com.plantuml.ubrex.builder.UBrexLeaf;

import net.sourceforge.plantuml.abel.Entity;
import net.sourceforge.plantuml.activitydiagram.ActivityDiagram;
import net.sourceforge.plantuml.command.CommandExecutionResult;
import net.sourceforge.plantuml.command.ParserPass;
import net.sourceforge.plantuml.command.UBrexSingleLineCommand2;
import net.sourceforge.plantuml.regex.RegexResult;
import net.sourceforge.plantuml.utils.LineLocation;

public class UBrexCommandElse extends UBrexSingleLineCommand2<ActivityDiagram> {

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

	static UnicodeBracketedExpression getRegexConcat() {
		return UBrexConcat.build(new UBrexLeaf("else"), UBrexLeaf.end());
	}

	@Override
	protected CommandExecutionResult executeArg(ActivityDiagram system, LineLocation location, RegexResult arg,
			ParserPass currentPass) {
		if (system.getLastEntityConsulted() == null)
			return CommandExecutionResult.error("No if for this else");

		if (system.getCurrentContext() == null)
			return CommandExecutionResult.error("No if for this else");

		final Entity branch = system.getCurrentContext().getBranch();

		system.setLastEntityConsulted(branch);

		return CommandExecutionResult.ok();
	}

}