[Pharo-project] Help "migrating" from classic streams to XStreams

Nicolas Cellier nicolas.cellier.aka.nice at gmail.com
Fri May 13 21:22:14 CEST 2011

Don't do it exclusively for file, but do it for every XTream
One way to do it would be with a wrapper.
I mean create a new subclass of XTReadStream, say
XTCompatibilityReadStream  implement the compatibility methods you
Same for WriteStream.
You'll have to define a few XTream messages too that delegates to the

    ^source blah

    ^destination foo

Then define something like

    ^XTCompatibilityReadStream on: self

My 2c.


2011/5/13 Mariano Martinez Peck <marianopeck at gmail.com>:
> Hi guys. We are developing Fuel with Martin Dias. Fuel is a binary
> serializer similar to Parcels. More info in
> http://rmod.lille.inria.fr/web/pier/software/Fuel
> For the moment, we are using the "classic" streams we want to give it a try
> to XStreams. My knowledge on streams is very little, so if someone can give
> me a hint I would really appreciate it.
> What I want to do right now is an adaptor of XStreams to classic stream. I
> mean, I want to create custom subclasses of XTFileWriteStream and
> XTFileReadStream that implements the same API from classic streams that we
> use in Fuel. And the implementations of such methods will do just a "self
> something" where something is the way of doing that in XStreams.
> So, the following is the protocol we use in Fuel for streams, and what I
> would love to know is the associated way to do it it XStreams. The left is
> classic streams, and after the "->" it is XStreams:
> Reading:
> nextNumber: -> ??
> nextPutAll: -> write:
> nextStringPut: -> ??
> nextPut:  -> put:
> nextNumber:put: -> ??
> nextWordPut: -> ??
> Writing:
> nextNumber: -> ??
> next:  -> read:
> nextString -> ??
> next  -> get
> nextWord -> ??
> Thanks a lot in advance,
> --
> Mariano
> http://marianopeck.wordpress.com

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