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�Zej&j(fd�Zd�Zd�Zd�Zdeddfd�Zdd�Zy)�Renderera�Helper class for building DNS wire-format messages.

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    over the generation of messages.

    Typical use::

        r = dns.renderer.Renderer(id=1, flags=0x80, max_size=512)
        r.add_question(qname, qtype, qclass)
        r.add_rrset(dns.renderer.ANSWER, rrset_1)
        r.add_rrset(dns.renderer.ANSWER, rrset_2)
        r.add_rrset(dns.renderer.AUTHORITY, ns_rrset)
        r.add_rrset(dns.renderer.ADDITIONAL, ad_rrset_1)
        r.add_rrset(dns.renderer.ADDITIONAL, ad_rrset_2)
        r.add_edns(0, 0, 4096)
        r.write_header()
        r.add_tsig(keyname, secret, 300, 1, 0, '', request_mac)
        wire = r.get_wire()

    If padding is going to be used, then the OPT record MUST be
    written after everything else in the additional section except for
    the TSIG (if any).

    output, an io.BytesIO, where rendering is written

    id: the message id

    flags: the message flags

    max_size: the maximum size of the message

    origin: the origin to use when rendering relative names

    compress: the compression table

    section: an int, the section currently being rendered

    counts: list of the number of RRs in each section

    mac: the MAC of the rendered message (if TSIG was used)
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