73 lines
2 KiB
TypeScript
73 lines
2 KiB
TypeScript
/*
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* Verrückte Turing-Maschinen — A turing complete game
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* Copyright (C) 2016-2018 kcf <vidofnir@folksprak.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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namespace lib_call
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{
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/**
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* @author kcf <vidofnir@folksprak.org>
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*/
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export type type_complex<type_data> = {kind : string; data : type_data;};
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/**
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* @author kcf <vidofnir@folksprak.org>
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*/
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export function wrap<type_data>(kind : string, data : type_data) : type_complex<type_data>
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{
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return {"kind": kind, "data": data};
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}
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/**
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* @author kcf <vidofnir@folksprak.org>
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*/
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export function unwrap<type_data>(complex : type_complex<type_data>) : type_data
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{
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return complex.data;
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}
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/**
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* @author kcf <vidofnir@folksprak.org>
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*/
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export function distinguish<type_result>
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(
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complex : type_complex<any>,
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cases : {[kind : string] : (data ?: any)=>type_result},
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fallback : (complex : type_complex<any>)=>type_result = ((complex) => {throw (new Error("unbehandelt"));})
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)
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: type_result
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{
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if (complex.kind in cases)
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{
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let function_ : (data ?: any)=>type_result = cases[complex.kind];
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let result : type_result = function_(complex.data);
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return result;
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}
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else
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{
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let message : string = ("unbehandelte Art '" + complex.kind + "'");
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console.warn(message);
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let result : type_result = fallback(complex);
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return result;
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}
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}
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}
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