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From: greg@eemips.tamu.edu (Greg Economides)
Newsgroups: comp.lang.eiffel
Subject: passing an object to a C routine
Message-ID: <8255@helios.TAMU.EDU>
Date: 14 Sep 90 16:52:53 GMT
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Organization: Texas A&M University, College Station
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I have a numerical simulation running in C which will be a part of an
Eiffel project.  I need to pass quite a bit of data between the simulation
and the Eiffel part (an interpreter of the simulator's output).  C likes
to have large amounts of info passed by a pointer to a structure or 
something which involves less data moving around than passing all of the
actual values.

I could try passing an object to the C routine, but I would then need
to know how an Eiffel object is represented in C and in what form this
object is passed.  Can anyone share that information with me?

Alternately, if I could pass a pointer to the C routine, that would be
alright.  In this case, how does one go about implementing a pointer in
Eiffel?  It seems to me that this option would come very close to violating
one or more of Meyer's OOP policies (data hiding). 

Peace,
--
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Greg Economides             Internet:  greg@zadok.tamu.edu
Texas A&M University                   greg@eemips.tamu.edu