String representation of Class

Hi,

Dr. Geo script are becoming first class citizen -- before it was just a
method hooked to an existing DrGeoUserScripts class ; then, it was easy
to export the script method as a string to include it in the XML sketch
file.

Now to save a Dr. Geo sketch using a script, the whole script class
needs to be embedded in the sketch XML representation.

Is it possible to export a whole class as a string, then import it back
from a string representation to a class?

Thanks

Hilaire
--
Dr. Geo - http://drgeo.eu
iStoa - http://istoa.drgeo.eu

Le 12 nov. 2014 08:32, "Hilaire" <[hidden email]> a écrit :
>
> Hi,
>
> Dr. Geo script are becoming first class citizen -- before it was just a
> method hooked to an existing DrGeoUserScripts class ; then, it was easy
> to export the script method as a string to include it in the XML sketch
> file.
>
> Now to save a Dr. Geo sketch using a script, the whole script class
> needs to be embedded in the sketch XML representation.
>
> Is it possible to export a whole class as a string, then import it back
> from a string representation to a class?

Isn't that a fileOut/fileIn thing?

Phil
>
> Thanks
>
> Hilaire
> --
> Dr. Geo - http://drgeo.eu
> iStoa - http://istoa.drgeo.eu
>
>
>

Le 12/11/2014 09:08, [hidden email] a écrit :
>> Is it possible to export a whole class as a string, then import it back
>> from a string representation to a class?
>
> Isn't that a fileOut/fileIn thing?
>

Yes, however I don't want it on a .st file (to avoid possible trouble on
the end user DrGeo installation) but on a string within Smalltalk.

Hilaire



--
Dr. Geo - http://drgeo.eu
iStoa - http://istoa.drgeo.eu

String streamContents: [ :out | Association fileOutOn: out ]

I am not sure it covers everything, but for some script methods this will do.

Thanks, interesting hack I need to learn from.

Filout works well as long as only ascii appear in the body of the
method. When a method contains non ascii (for example for a string)
fileout get irrational with a ZNInvalidUTF8, but not always!

For example, a script method as:

scriptName
^ 'téte'

does not lead to the error, but as following:

scriptName
^ 'tété'

leads to the error.


Note the scriptName method works from Pharo

To build the script I use the following code.

createScriptFrom: dialog
"Build a new script from the dialog, return the newly created script object"
        |scriptClass stream|
        scriptClass := DrGeoUserScript
                subclass: ('DrGeoScript', dialog scriptName hash printString) asSymbol
                instanceVariableNames: ''
                classVariableNames: ''
                category:  'DrGeoII-User'.
        "name"
        stream := WriteStream on: String new.
        stream << 'scriptName'; << Character cr;
                << Character tab; << $^; <<$'; << dialog scriptName; << $'.
        scriptClass compile: stream contents classified: 'public'.



Later I test directly from the browser  with a dummy class with one
method with non ascii character. Fileout sometimes work (for example, I
add a space in the method body, save, remove the space, save again,...),
some time not.

tested on Pharo 3.0

Hilaire





Le 12/11/2014 09:33, Sven Van Caekenberghe a écrit :
> String streamContents: [ :out | Association fileOutOn: out ]
>
> I am not sure it covers everything, but for some script methods this will do.


--
Dr. Geo - http://drgeo.eu
iStoa - http://istoa.drgeo.eu

Le 12/11/2014 10:15, [hidden email] a écrit :
> Why not use FileSystem memory for those things? This would keep the
> files inside the image.
>

because I didn't know about it :)
But fileout(UTF8 conversion, again...) seems to be broken, see my other
post.

Hilaire

--
Dr. Geo - http://drgeo.eu
iStoa - http://istoa.drgeo.eu

Le 12/11/2014 10:22, Hilaire a écrit :
> Later I test directly from the browser  with a dummy class with one
> method with non ascii character. Fileout sometimes work (for example, I
> add a space in the method body, save, remove the space, save again,...),
> some time not.
>
> tested on Pharo 3.0


Reported here
https://pharo.fogbugz.com/f/cases/14462/ZNInvalidUTF8-when-fileout-method-body-with-non-ascii-characters

--
Dr. Geo - http://drgeo.eu
iStoa - http://istoa.drgeo.eu