public final void skipWhitespace() {
        for (;;) {
            if (ch <= '/') {
                if (ch == ' '  ||
                    ch == '\r' ||
                    ch == '\n' ||
                    ch == '\t' ||
                    ch == '\f' ||
                    ch == '\b') {
                    next();
                    continue;
                } else if (ch == '/') {
                    skipComment();
                    continue;
                } else {
                    break;
                }
            } else {
                break;
            }
        }
    }
internal method, don't invoke
@param token
src/main/java/com/alibaba/fastjson/parser/JSONLexerBase.java