vtm/quelldatein/basis/fehlermonade.ts
Christian Fraß 13e34a6f42 sicherung
2017-11-09 14:06:35 +01:00

117 lines
2.1 KiB
TypeScript

/*
* 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/>.
*/
/**
* @author kcf <vidofnir@folksprak.org>
*/
interface schnittstelle_fehlermonade<typ_wert>
{
/**
* @author kcf <vidofnir@folksprak.org>
*/
ist_schlicht() : boolean;
/**
* @author kcf <vidofnir@folksprak.org>
*/
lesen() : typ_wert;
}
/**
* @author kcf <vidofnir@folksprak.org>
*/
class klasse_nichts<typ_wert>
implements schnittstelle_fehlermonade<typ_wert>
{
/**
* @author kcf <vidofnir@folksprak.org>
*/
public constructor()
{
}
/**
* @author kcf <vidofnir@folksprak.org>
*/
public ist_schlicht() : boolean
{
return false;
}
/**
* @author kcf <vidofnir@folksprak.org>
*/
public lesen() : typ_wert
{
let meldung : string = "ist nichts";
throw (new Error(meldung));
}
}
/**
* @author kcf <vidofnir@folksprak.org>
*/
class klasse_schlicht<typ_wert>
implements schnittstelle_fehlermonade<typ_wert>
{
/**
* @author kcf <vidofnir@folksprak.org>
*/
private wert : typ_wert;
/**
* @author kcf <vidofnir@folksprak.org>
*/
public constructor(wert : typ_wert)
{
this.wert = wert;
}
/**
* @author kcf <vidofnir@folksprak.org>
*/
public ist_schlicht() : boolean
{
return true;
}
/**
* @author kcf <vidofnir@folksprak.org>
*/
public lesen() : typ_wert
{
return this.wert;
}
}