On 7 Nov 2016, at 14:39, Nicolas Passerini <npasserini@gmail.com> wrote:


2016-11-07 10:37 GMT+01:00 Denis Kudriashov <dionisiydk@gmail.com>:
NativeStructure 
   subclass : #SDL_Point
   layout : StructureLayout
   slots: { #x &=> #int. #y &=> #int}
...
(I got example of Ronie definition from his paper https://hal.inria.fr/hal-01353884/document).
So all offsets logic will go to one place StructureLayout and slots. And also we will not forced to use accessors anymore.

I like this idea.
But one question, would it be backwards compatible? (I mean, if I have current FFI invocations that use a structure in the traditional way, will I have to change all these functions if I try to migrate to this new idea?)

no, and that���s why I didn���t considered it for now. 
this is an api change, non backwards compatible and then it breaks my own criteria about Pharo6 development: no more API changes. 

but yes, in general, I like the idea��� just we cannot break things just like that (I know, I break things��� but this is not willingly :P)

Esteban