/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2023, 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!)
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 * 
 * This file is part of PlantUML.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * 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.
 *
 *
 * Original Author:  Arnaud Roques
 */
package net.sourceforge.plantuml.project.lang;

import net.sourceforge.plantuml.command.regex.IRegex;
import net.sourceforge.plantuml.command.regex.RegexConcat;
import net.sourceforge.plantuml.command.regex.RegexLeaf;
import net.sourceforge.plantuml.command.regex.RegexOptional;
import net.sourceforge.plantuml.command.regex.RegexOr;

public class Verbs {

	public static IRegex are() {
		return new RegexLeaf("are");
	}

	public static IRegex areColored() {
		return new RegexLeaf("are[%s]+colou?red");
	}

	public static IRegex displayOnSameRowAs() {
		return new RegexLeaf("displays?[%s]+on[%s]+same[%s]+row[%s]+as");
	}

	public static IRegex ends() {
		return new RegexLeaf("ends");
	}

	public static IRegex ends2() {
		return new RegexLeaf("ends[%s]*(the[%s]*|on[%s]*|at[%s]*)*");
	}

	public static IRegex happens() {
		return new RegexLeaf("happens?[%s]*(at[%s]*|the[%s]*|on[%s]*)*");
	}

	public static IRegex pauses() {
		return new RegexLeaf("pauses?[%s]*(at[%s]*|the[%s]*|on[%s]*|from[%s]*)*");
	}

	public static IRegex isDeleted() {
		return new RegexLeaf("is[%s]+deleted");
	}

	public static IRegex is() {
		return new RegexLeaf("is");
	}

	public static IRegex isColored() {
		return new RegexLeaf("is[%s]+colou?red");
	}

	public static IRegex isColoredForCompletion() {
		return new RegexLeaf("is[%s]+colou?red[%s]+for[%s]+completion");
	}

	public static IRegex isOff() {
		return new RegexConcat(new RegexLeaf("is"), //
				RegexLeaf.spaceOneOrMore(), //
				new RegexLeaf("off"), //
				RegexLeaf.spaceOneOrMore(), //
				new RegexOr(//
						new RegexLeaf("on"), //
						new RegexLeaf("for"), //
						new RegexLeaf("the"), //
						new RegexLeaf("at") //
				));
	}

	public static IRegex isOn() {
		return new RegexConcat(new RegexLeaf("is"), //
				RegexLeaf.spaceOneOrMore(), //
				new RegexLeaf("on"), //
				RegexLeaf.spaceOneOrMore(), //
				new RegexOr(//
						new RegexLeaf("on"), //
						new RegexLeaf("for"), //
						new RegexLeaf("the"), //
						new RegexLeaf("at") //
				) //
		);
	}

	public static IRegex isOrAre() {
		return new RegexLeaf("(is|are)");
	}

	public static IRegex isOrAreNamed() {
		return new RegexLeaf("(is|are)[%s]+named");
	}

	public static IRegex lasts() {
		return new RegexLeaf("(lasts|requires)");
	}

	public static IRegex linksTo() {
		return new RegexLeaf("links to");
	}

	public static IRegex occurs() {
		return new RegexLeaf("occurs?");
	}

	public static IRegex starts3() {
		return new RegexLeaf("starts[%s]*(the[%s]*|on[%s]*|at[%s]*)*");
	}

	public static IRegex starts2() {
		return new RegexLeaf("starts");
	}

	public static IRegex starts() {
		return new RegexConcat(new RegexLeaf("start"), //
				new RegexOptional(new RegexLeaf("s")), //
				RegexLeaf.spaceZeroOrMore(), //
				new RegexOptional(new RegexOr(//
						new RegexLeaf("on"), //
						new RegexLeaf("for"), //
						new RegexLeaf("the"), //
						new RegexLeaf("at") //
				)) //
		);
	}

	public static IRegex just() {
		return new RegexLeaf("just");
	}

	public static IRegex justBefore() {
		return new RegexLeaf("just[%s]*before");
	}

	public static IRegex justAfter() {
		return new RegexLeaf("just[%s]*after");
	}

}
