mirror of
https://github.com/HeyPuter/puter
synced 2024-11-15 06:15:47 +00:00
46 lines
1.4 KiB
JavaScript
46 lines
1.4 KiB
JavaScript
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/*
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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 default class WhitespaceParserImpl {
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static meta = {
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inputs: 'bytes',
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outputs: 'node'
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}
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static data = {
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whitespaceCharCodes: ' \r\t'.split('')
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.map(chr => chr.charCodeAt(0))
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}
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parse (lexer) {
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const { whitespaceCharCodes } = this.constructor.data;
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let text = '';
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for ( ;; ) {
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const { done, value } = lexer.look();
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if ( done ) break;
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if ( ! whitespaceCharCodes.includes(value) ) break;
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text += String.fromCharCode(value);
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lexer.next();
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}
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if ( text.length === 0 ) return;
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return { $: 'whitespace', text };
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}
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}
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