vtm/quelldatein/aufbau/figur.ts

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module mod_vtm_aufbau
{
/**
* @author kcf <vidofnir@folksprak.org>
*/
export class klasse_figur
{
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/**
* @author kcf <vidofnir@folksprak.org>
*/
private zustand : typ_zustand;
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/**
* @author kcf <vidofnir@folksprak.org>
*/
private band : Array<typ_symbol>;
/**
* @author kcf <vidofnir@folksprak.org>
*/
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private stelle : typ_stelle;
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/**
* @author kcf <vidofnir@folksprak.org>
*/
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public constructor(band : Array<typ_symbol> = [], stelle : typ_stelle = stelle_null())
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{
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this.zustand = zustand_normal;
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this.band = band;
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this.stelle = stelle;
}
/**
* @author kcf <vidofnir@folksprak.org>
*/
public zustand_lesen() : typ_zustand
{
return this.zustand;
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}
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/**
* @author kcf <vidofnir@folksprak.org>
*/
public band_lesen() : Array<typ_symbol>
{
return this.band;
}
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/**
* @author kcf <vidofnir@folksprak.org>
*/
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public stelle_lesen() : typ_stelle
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{
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return this.stelle;
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}
/**
* @author kcf <vidofnir@folksprak.org>
*/
public bewegen(richtung : typ_richtung) : void
{
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let summand : typ_stelle = stelle_von_richtung(richtung);
this.stelle = stelle_addieren(this.stelle, summand);
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}
/**
* @author kcf <vidofnir@folksprak.org>
*/
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public schreiben(symbol : typ_symbol) : void
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{
this.band.push(symbol);
}
/**
* @author kcf <vidofnir@folksprak.org>
*/
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public lesen() : schnittstelle_fehlermonade<typ_symbol>
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{
if (this.band.length <= 0)
{
return (new klasse_nichts<typ_symbol>());
}
else
{
return (new klasse_schlicht<typ_symbol>(this.band[0]));
}
}
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/**
* @author kcf <vidofnir@folksprak.org>
*/
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public schieben() : void
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{
if (this.band.length <= 0)
{
let meldung : string = "Band ist leer";
throw (new Error(meldung));
}
else
{
this.band.shift();
}
}
/**
* @author kcf <vidofnir@folksprak.org>
*/
public annehmen() : void
{
this.zustand = zustand_fertig;
}
/**
* @author kcf <vidofnir@folksprak.org>
*/
public verwerfen() : void
{
this.zustand = zustand_tot;
}
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}
}