source: frontend/node_modules/webpack-sources/lib/helpers/splitIntoPotentialTokens.js

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
        Author Tobias Koppers @sokra
*/

"use strict";

// \n = 10
// ; = 59
// { = 123
// } = 125
// <space> = 32
// \r = 13
// \t = 9

/**
 * @param {string} str string
 * @returns {string[] | null} array of string separated by potential tokens
 */
const splitIntoPotentialTokens = (str) => {
        const len = str.length;
        if (len === 0) return null;
        const results = [];
        let i = 0;
        while (i < len) {
                const start = i;
                block: {
                        let cc = str.charCodeAt(i);
                        while (cc !== 10 && cc !== 59 && cc !== 123 && cc !== 125) {
                                if (++i >= len) break block;
                                cc = str.charCodeAt(i);
                        }
                        while (
                                cc === 59 ||
                                cc === 32 ||
                                cc === 123 ||
                                cc === 125 ||
                                cc === 13 ||
                                cc === 9
                        ) {
                                if (++i >= len) break block;
                                cc = str.charCodeAt(i);
                        }
                        if (cc === 10) {
                                i++;
                        }
                }
                results.push(str.slice(start, i));
        }
        return results;
};

module.exports = splitIntoPotentialTokens;