src/scanner.js
function scan(text) {
    let sr = SReader.create(text);
    let tokens = [];
    while (!sr.isDone()) {
        tokens.push(readNext(sr));
    }
    return tokens;
}
function scan(text) {
    let sr = SReader.create(text);
    let tokens = [];
    while (!sr.isDone()) {
        tokens.push(readNext(sr));
    }
    return tokens;
}
string => array