Re: Exchanging Source Code between VW5i.4 and Squeak3; Best Practice?

On Mon, 2002-07-29 at 17:02, Sven C. Koehler wrote:
> Hello all!
> 
> What is the best practice when I want to write one source code
> for both Squeak3 and VW5i.4.  By that I mean only the source code,
> ignoring differences in supplied classes by the system.  
> 
> I also want to keep source code in a CVS repository, for easy
> distribution (hence it suffices, if I can occasionally generate the
> source code that is to be checked in into the CVS repository).
> 
> All I tried so far turned out not to work (using Pepe2, fileout ..
> filein).  Thus, I believe that I need to maintain two different
versions
> of the source code; one for Squeak, and one for VW...
> 
> Any better ideas?
> 
> Best regards,
> 
> Sven C. Koehler

I made this same inquiry a couple of years ago (okay, it wasn't vw5i.4,
per se, but perhaps vw5i).

Since then, I have moved code back and forth using a couple of different
strategies.

Speaking from memory here, it seemed if you loaded the VW3 compatibility
parcel and filed things out in Chunk format from VisualWorks, you could
read it into Squeak without much difficulty. 

Going from Squeak to VisualWorks was where I ran into problems. I ended
up creating a parcel of code for VisualWorks that would allow the Squeak
Chunk format to be read in. I went further than that and started on a
Squeak compatibility parcel that made my porting efforts easier, adding
many of the Classes and methods I missed from Squeak and even curly
brace support into VisualWorks.

I also worked a bit on the CVST project. When I was working with it we
used Eric Arseneau's SIF code for the interchange format.

I haven't used Göran Hultgren's CVS client for Squeak, so I can't
comment on its current status.

Perhaps some of the CampSmalltalk folks can share their recent
experience with moving between Squeak and VisualWorks, so I've copied
this message to that list. I'll post a final summary of any ensuing
discussion of this to both lists and to the VisualWorks and Squeak
wikis.

-Mark Schwenk
 WellThot Inc. 

On Mon, 2002-07-29 at 17:02, Sven C. Koehler wrote:
> Hello all!
> 
> What is the best practice when I want to write one source code
> for both Squeak3 and VW5i.4.  By that I mean only the source code,
> ignoring differences in supplied classes by the system.  
> 
> I also want to keep source code in a CVS repository, for easy
> distribution (hence it suffices, if I can occasionally generate the
> source code that is to be checked in into the CVS repository).
> 
> All I tried so far turned out not to work (using Pepe2, fileout ..
> filein).  Thus, I believe that I need to maintain two different versions
> of the source code; one for Squeak, and one for VW...
> 
> Any better ideas?
> 
> Best regards,
> 
> Sven C. Koehler