That is why it is conditional :
su_sockaddr_u = record
(...)
{$ifdef DOCUMENTATION_ONLY}
0 : ( su_len : byte );
1 : ( su_family : byte );
2 : ( su_port : word );
{$else}
3 : ( su_dummy : smallint );
{$endif}
(...)
end;
Cheers, Ludo
-----Message d'origine-----
De : fpc-pascal-boun...@lists.freepascal.org
[mailto:fpc-pascal-boun...@lists.freepascal.org] De la part de Sven Barth
Envoyé : dimanche 1 mai 2011 00:19
À : fpc-pascal@lists.freepascal.org
Objet : Re: RE : RE : RE : [fpc-pascal] How to translate this union ?
Question:
In case of DOCUMENTATION_ONLY not defined, does
su_sockaddr_u = record
(...)
1 : ( su_sa.sa_family : byte )
(...)
end;
really compile?
(From what I know about Pascal I would say: no)
Regards,
Sven
On 30.04.2011 10:53, Ludo Brands wrote:
> Using macros, the translation looks like
> {$MACRO ON}
> {$ifndef DOCUMENTATION_ONLY}
> {$if SU_HAVE_SOCKADDR_SA_LEN <>0}
> {$define su_len:=su_sa.sa_len}
> {$else}
> {$define su_len:=su_array[0]}
> {$endif}
> {$define su_family:=su_sa.sa_family}
> {$define su_port:=su_sin.sin_port}
> {$define su_scope_id:=su_array32[6]}
> {$endif}
> type
> su_sockaddr_u = record
> case longint of
> {$ifdef DOCUMENTATION_ONLY}
> 0 : ( su_len : byte );
> 1 : ( su_family : byte );
> 2 : ( su_port : word );
> {$else}
> 3 : ( su_dummy : smallint );
> {$endif}
> 4 : ( su_array : array[0..31] of char );
> 5 : ( su_array16 : array[0..15] of word );
> 6 : ( su_array32 : array[0..7] of longword );
> 7 : ( su_sa : sockaddr );
> 8 : ( su_sin : sockaddr_in );
> {$if SU_HAVE_IN6 <>0}
> 9 : ( su_sin6 : sockaddr_in6 );
> {$endif}
> {$ifdef DOCUMENTATION_ONLY}
> 10 : ( su_scope_id : longword );
> {$endif}
> end;
>
> -----Message d'origine-----
> *De :* fpc-pascal-boun...@lists.freepascal.org
> [mailto:fpc-pascal-boun...@lists.freepascal.org] *De la part de*
> Ludo Brands
> *Envoyé :* samedi 30 avril 2011 10:29
> *À :* 'FPC-Pascal users discussions'
> *Objet :* RE : RE : [fpc-pascal] How to translate this union ?
>
> Forget my previous reply. I found the original header file on
> sourceforge.
> I have alse a better understanding now of what the code is supposed
> to do: in case DOCUMENTATION_ONLY is not defined, a reference to,
> for example, su_sockaddr_u.su_family will be subsstituted by
> su_sockaddr_u.susa.sa_family.
> You could use macros and do a {$define su_family:=susa.sa_family}
> with the following limitations:
> - if you have variables or other record members named su_family, not
> part of the su_sockaddr_u record, they will be renamed also.
> - it works only for the units that include your .inc file.
>
> -----Message d'origine-----
> *De :* fpc-pascal-boun...@lists.freepascal.org
> [mailto:fpc-pascal-boun...@lists.freepascal.org] *De la part de*
> Ludo Brands
> *Envoyé :* samedi 30 avril 2011 09:18
> *À :* 'FPC-Pascal users discussions'
> *Objet :* RE : [fpc-pascal] How to translate this union ?
>
> Can you post the original c code? You point to a file that seems
> to be a reworked output from h2pas. As it is now, it indeed
> doesn't make any sense. I would think the
> su_len,su_family,su_port should make up a record but they aren't.
> I suggest you move the #defines inside the union declaration to
> somewhere before the union declaration. It'll double up the
> ifdef's but make the code so much more readable.
> -----Message d'origine-----
> *De :* fpc-pascal-boun...@lists.freepascal.org
> [mailto:fpc-pascal-boun...@lists.freepascal.org] *De la part de*
ik
> *Envoyé :* vendredi 29 avril 2011 22:15
> *À :* FPC-Pascal users discussions
> *Objet :* [fpc-pascal] How to translate this union ?
>
> Hello list,
>
> I'm trying to translate the following union
>
<https://github.com/ik5/sofia-sip/blob/master/src/lib/sui.inc#L199>
> to Pascal, but I do not understand it, and so does h2pas.
> How to translate it ?
>
> Thanks,
>
> Ido
>
>
> LINESIP - Opening the source for communication
> http://www.linesip.com
> http://www.linesip.co.il
>
>
>
>
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