computational-problem-solving/sat

/**
 * _skip_blanks.
 *
 * @param {Iterator<string>} iterator
 * @return {[boolean, string]}
 */
export default function _skip_blanks(iterator) {
    while (true) {
        const current = iterator.next();
        if (current.done) return [true, null];

        switch (current.value) {
            case ' ':
            case '\t':
            case '\n': {
                continue;
            }

            // HANDLE CUSTOM DELIMITER OF SATLIB
            case '%': {
                return [true, null];
            }

            default: {
                return [false, current.value];
            }
        }
    }
}