ComplementDate.java

/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
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 * (C) Copyright 2009-2024, Arnaud Roques
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 * Original Author:  Arnaud Roques
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package net.sourceforge.plantuml.gantt.lang;

import java.time.LocalDate;

import com.plantuml.ubrex.Capture;
import com.plantuml.ubrex.UMatcher;
import com.plantuml.ubrex.builder.UBrexConcat;
import com.plantuml.ubrex.builder.UBrexLeaf;
import com.plantuml.ubrex.builder.UBrexNamed;
import com.plantuml.ubrex.builder.UBrexOr;
import com.plantuml.ubrex.builder.UBrexPart;

import net.sourceforge.plantuml.gantt.Failable;
import net.sourceforge.plantuml.gantt.GanttDiagram;

public class ComplementDate implements Something<GanttDiagram> {

	private final Type type;

	static enum Type {
		ANY, ONLY_RELATIVE, ONLY_ABSOLUTE;
	}

	private ComplementDate(Type type) {
		this.type = type;
	}

	public static ComplementDate any() {
		return new ComplementDate(Type.ANY);
	}

	public static ComplementDate onlyRelative() {
		return new ComplementDate(Type.ONLY_RELATIVE);
	}

	public static ComplementDate onlyAbsolute() {
		return new ComplementDate(Type.ONLY_ABSOLUTE);
	}

	@Override
	public UBrexPart toUnicodeBracketedExpressionComplement() {
		final DayPattern dayPattern = new DayPattern("");
		switch (type) {
		case ONLY_ABSOLUTE:
			return dayPattern.toUbrex();
		case ONLY_RELATIVE:
			return new UBrexOr(toUbrexD(), toUbrexE());
		}
		return new UBrexOr(dayPattern.toUbrex(), toUbrexD(), toUbrexE());
	}

	private UBrexPart toUbrexD() {
		return UBrexConcat.build( //
				new UBrexNamed("DCOUNT", new UBrexLeaf("〇+〴d")), //
				UBrexLeaf.spaceOneOrMore(), //
				new UBrexLeaf("day〇?s"), //
				UBrexLeaf.spaceOneOrMore(), //
				new UBrexLeaf("after"), //
				UBrexLeaf.spaceOneOrMore(), //
				new UBrexLeaf("start") //
		);
	}

	private UBrexPart toUbrexE() {
		return UBrexConcat.build( //
				new UBrexLeaf("「dD」+"), //
				new UBrexNamed("ECOUNT", new UBrexLeaf("〇+〴d")));
	}

	@Override
	public Failable<LocalDate> getMe(GanttDiagram gantt, UMatcher arg) {
		final DayPattern dayPattern = new DayPattern("");
		final LocalDate result = dayPattern.getDay(arg);
		if (result != null)
			return Failable.ok(result);
		if (arg.get("DCOUNT", 0) != null)
			return Failable.ok(resultD(gantt, arg));

		if (arg.get("ECOUNT", 0) != null)
			return Failable.ok(resultE(gantt, arg));

		throw new IllegalStateException();
	}

	public Failable<LocalDate> getMe(GanttDiagram gantt, Capture arg) {
		final DayPattern dayPattern = new DayPattern("");
		final LocalDate result = dayPattern.getDay(arg);
		if (result != null)
			return Failable.ok(result);

		if (arg.get("DCOUNT") != null)
			return Failable.ok(resultD(gantt, arg));

		if (arg.get("ECOUNT") != null)
			return Failable.ok(resultE(gantt, arg));

		throw new IllegalStateException();
	}

	private LocalDate resultD(GanttDiagram gantt, UMatcher arg) {
		final int day = Integer.parseInt(arg.get("DCOUNT", 0));
		return gantt.getMinDay().plusDays(day);
	}

	private LocalDate resultD(GanttDiagram gantt, Capture arg) {
		final int day = Integer.parseInt(arg.get("DCOUNT"));
		return gantt.getMinDay().plusDays(day);
	}

	private LocalDate resultE(GanttDiagram gantt, UMatcher arg) {
		final int day = Integer.parseInt(arg.get("ECOUNT", 0));
		return gantt.getMinDay().plusDays(day);
	}

	private LocalDate resultE(GanttDiagram gantt, Capture arg) {
		final int day = Integer.parseInt(arg.get("ECOUNT"));
		return gantt.getMinDay().plusDays(day);
	}

}