/*
 * Verrückte Turing-Maschinen — A turing complete game
 * Copyright (C) 2016 Christian Fraß <vidofnir@folksprak.org>
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */


module lib_brauch
	{
		
		/**
		 * @author kcf <vidofnir@folksprak.org>
		 */
		export type typ_brauch<typ_signatur> = {[domäne : string] : typ_signatur};


		/**
		 * @author kcf <vidofnir@folksprak.org>
		 */
		export function erstellen<typ_signatur>
			(
			)
			: typ_brauch<typ_signatur>
			{
				return {};
			}
		
		
		/**
		 * @author kcf <vidofnir@folksprak.org>
		 */
		export function umsetzen<typ_signatur>
			(
				brauch : typ_brauch<typ_signatur>,
				domaene : string,
				implementierung : typ_signatur
			)
			: void
			{
				if (domaene in brauch)
					{
						let meldung : string = ("Domäne '" + domaene + "' bereits vorhanden");
						throw (new Error(meldung));
					}
				else
					{
						brauch[domaene] = implementierung;
					}
			}
		
		
		/**
		 * @author kcf <vidofnir@folksprak.org>
		 */
		export function anwenden<typ_signatur>
			(
				brauch : typ_brauch<typ_signatur>,
				domaene : string
			)
			: typ_signatur
			{
				if (! (domaene in brauch))
					{
						let meldung : string = ("keine Implementierung für Domäne '" + domaene + "' vorhanden");
						throw (new Error(meldung));
					}
				else
					{
						return brauch[domaene];
					}
			}
		
	}