[x3d-public] Continuing discussions on ProtoExpander

[John Carlson]

Question:   Do we want a protoexpander, or a full proto implementation for
X3DOM?

John

On Fri, May 22, 2020 at 12:13 PM John Carlson <yottzumm at gmail.com> wrote:

> My tendency is to go for the second two, and return a brand new scenegraph.
>
> On Fri, May 22, 2020 at 11:59 AM John Carlson <yottzumm at gmail.com> wrote:
>
>> I’m thinking for an interface to the proto expander, we should either
>> have:
>>
>> Browser.expand (X3DObject obj)
>>
>> Or
>>
>> X3DObject Browser.expand(X3DObject obj);
>>
>> Or X3DObject.expand(SymbolContext sc);
>>
>> Which is best?
>>
>> On Fri, May 22, 2020 at 11:39 AM John Carlson <yottzumm at gmail.com> wrote:
>>
>>> What I can try to do is write up documentation for the JSON based
>>> expander, and then we can see how to convert it to more bindings.
>>>
>>> John
>>>
>>> On Fri, May 22, 2020 at 11:35 AM John Carlson <yottzumm at gmail.com>
>>> wrote:
>>>
>>>> I would target the python environment first, imho.   Everyone seems
>>>> excited about it.   I’m also open to doing it in the es6 environment, I
>>>> just need some prototype examples written or translated.
>>>>
>>>> X3dToES6.xslt or a serializer is becoming critical path.
>>>>
>>>> I think we need to sit down and design the abstract specification for
>>>> protoexpansion?  Or do we work on code first?
>>>>
>>>> John
>>>>
>>>>
>>>> On Fri, May 22, 2020 at 11:19 AM John Carlson <yottzumm at gmail.com>
>>>> wrote:
>>>>
>>>>> Maybe we can add expanding to all X3D*SAIL and x3d.* packages.
>>>>>
>>>>> Something to think about, something to drink about!
>>>>>
>>>>> John
>>>>>
>>>>> On Fri, May 22, 2020 at 11:06 AM John Carlson <yottzumm at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> Don,  I’m thinking the best platform for creating  a ProtoExpander
>>>>>> may be Java, then use jni or JSweet or hand porting to get it to other
>>>>>> languages.   What do you think?   I should be able to help with the port to
>>>>>> Java,  I just need an excellent namespace/scoping/context library written
>>>>>> or found.
>>>>>>
>>>>>> On Fri, May 22, 2020 at 1:06 AM John Carlson <yottzumm at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Design considerations.  Create one or more dispatch tables to
>>>>>>> classes like ProtoDeclare, ProtoInterface, ProtoBody, ProtoInstance, ROUTE,
>>>>>>> Script,etc.   Add handle method to each class.
>>>>>>>
>>>>>>> Reconsider what constitutes a scope.   Does a scope have a symbol
>>>>>>> table?
>>>>>>>
>>>>>>
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