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28 lines
1.6 KiB
JavaScript
28 lines
1.6 KiB
JavaScript
/*
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evaluate.mjs - <short description TODO>
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Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/eval/evaluate.mjs>
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This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero 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 Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import shapeshifter from './shapeshifter.mjs';
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import * as strudel from '@strudel.cycles/core';
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const { isPattern } = strudel;
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export const extend = (...args) => {
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// TODO: find a way to make args available to eval without adding it to global scope...
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// sadly, "with" does not work in strict mode
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Object.assign(globalThis, ...args);
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};
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export const evaluate = async (code) => {
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const shapeshifted = shapeshifter(code); // transform syntactically correct js code to semantically usable code
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let evaluated = await eval(shapeshifted);
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if (!isPattern(evaluated)) {
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console.log('evaluated', evaluated);
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const message = `got "${typeof evaluated}" instead of pattern`;
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throw new Error(message + (typeof evaluated === 'function' ? ', did you forget to call a function?' : '.'));
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}
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return { mode: 'javascript', pattern: evaluated };
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};
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