Re: [imp-dev] Bundling of IMP Runtime by MDT/OCL Examples

[Ed Willink <ed@xxxxxxxxxxxxx>]

Hi Robert

Sorry not to see you at EclipseCon.

I managed to speak to Wayne Beaton and David Williams together and got 
an unfavourable response to bundling IMP Runtime within the MDT/OCL 
Examples feature.

Since IMP Runtime has not undergone a release review, it can only be 
incorporated in a release after undergoing IP approval as a third party 
contribution, for which the timescales are impractical.

I'm therefore forced towards another solution for Helios. Fortunately 
EclipseCon also provided the solution. The rewritten Xtext is being 
widely used (including e4) since it directly provides semantically rich 
editors from an enhanced LL grammar auto-generating the AST with almost 
no 'action' code at all. Xtext enhances LL grammars with semantic 
concepts supporting scoped type (non-)resolution in the editor. Xtext 
already has many auto-generated outlines, preference pages and 
completion proposals, all of which can be tailored. There is also a 
declarative framework for adding validations and quick fixes.

I strongly recommend that you investigate how Xtext and IMP Runtime can 
be aligned, in particular it would be good to support LPG2 rather than 
ANTLR.

    Regards

        Ed Willink


On 18/03/2010 15:53, Ed Willink wrote:
> Hi Wayne
>
> David Williams suggested that I check this scenario out with you.
>
> We have finally got a 'text' editor available for use by MDT/OCL. This 
> editor uses IMP Runtime which is not on the Helios train (and not in 
> Orbit).
>
> Since this editor does not have the same maturity as the rest of the 
> MDT/OCL code, we are packaging it as an example for Helios, with a 
> view to 'promoting' it after Helios. (This is a kind of Incubation 
> within a mature project).
>
> In order to avoid a dangling reference breaking the buckybuild we plan 
> to bundle IMP Runtime within the MDT/OCL Examples Feature. IMP are 
> happy for us to do this.
>
> David points out that this means that IMP Runtime will fall within the 
> remit of the MDT/OCL Release Review. Not having yet particpated in a 
> Review, I have no idea how stringent the attention paid to an example 
> will be.
>
> I have started a separate thread on mdt-ocl.dev to discuss whether we 
> shouldn't spin off an OCL Tools project post-Helios to establish a 
> more officially Incubation area and avoid some unduely tight project 
> depenedencies.
>
> Are you happy with MDT/OCL bundling IMP Runtime in Helios?
>
>     Regards
>
>         Ed Willink
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