mirror of
https://github.com/HeyPuter/puter
synced 2024-11-15 06:15:47 +00:00
46 lines
1.5 KiB
JavaScript
46 lines
1.5 KiB
JavaScript
/*
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* Copyright (C) 2024 Puter Technologies Inc.
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*
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* This file is part of Phoenix Shell.
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*
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* Phoenix Shell is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published
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* by 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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero 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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export class Context {
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constructor (values) {
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for ( const k in values ) this[k] = values[k];
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}
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sub (newValues) {
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if ( newValues === undefined ) newValues = {};
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const sub = Object.create(this);
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const alreadyApplied = {};
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for ( const k in sub ) {
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if ( sub[k] instanceof Context ) {
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const newValuesForK =
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newValues.hasOwnProperty(k)
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? newValues[k] : undefined;
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sub[k] = sub[k].sub(newValuesForK);
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alreadyApplied[k] = true;
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}
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}
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for ( const k in newValues ) {
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if ( alreadyApplied[k] ) continue;
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sub[k] = newValues[k];
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}
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return sub;
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}
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}
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