[Vm-dev] About the image

Bert Freudenberg bert at freudenbergs.de
Wed Aug 18 09:21:50 UTC 2010

On 18.08.2010, at 04:48, Andreas Raab wrote:

> On 8/17/2010 6:54 PM, Eliot Miranda wrote:
>> In the VW VM I added code to choose a class in the
>> specialObjectsArray (Array) and search it for a byte object with the
>> characters 'Array' and use that as the class name index.  Similarly its
>> class was searched for an object equal to Array and that slot was used
>> as the thisClass index.  I see I was too lazy to do that in
>> StackInterpreter>>initializeInterpreter but I should, and should
>> introduce classNameIndex and thisClassIndex and use them in place of the
>> hard-coded constants.  That way one can save immediately after
>> adding/removing the behavior inst var and have the VM get things right
>> on start-up.
> That's one option. An alternative is to provide the class name index via the splObjsArray and default to 5 if not present.

I like Elliot's option better. Not having to maintain that index means there is one thing less to worry about. If the added flexibility of an explicit index is needed later, it could still be added at that point.

- Bert -

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