Thank you for such a detailed response. I looked at SWIG before I found
this project interesting and I agree that it would make our lives quite
easier if we followed SWIG and later came up with binding for R, Octave
etc. (which was also something I thought of when I looked at SWIG as a
project, but yeah, later developments).
I'll look into the suggested readings and get back to you with my ideas.
Thanks,
Shivam
On Thu, Mar 5, 2015 at 6:59 AM John Pye <[email protected]> wrote:
> Hi Shivam
>
> As you can probably appreciate, this project represents a pretty major
> effort and will require both a deep and broad understanding of the ASCEND
> APIs in C, as well as the requirements of the current PyGTK GUI. I think
> that the work should probably start with Pallav Tinna's branch of the
> repository, which already migrates the GUI from GTK2 to GTK3 toolkit. The
> goal would be to eliminate the C++ and STL code as far as possible, and aim
> for faster and lighter Python bindings, while also aiming at a clean and
> maintainable approach. I believe that SWIG is quite capable as a tool for
> doing this, and I myself am very comfortable with SWIG, but if you can see
> a strong case for adopting another tool then we can consider that. One
> aspect of SWIG that is a appealing is that in principle it can be used to
> target several different scripting languages. Of interest for scientific
> work would be R, Octave, Scilab and possibly a couple of others. This is
> not a priority for us, but is a mild reason to stick with the SWIG
> approach, as I see it.
>
> For some inspiration on bindings from Python to C, I suggest you look at
> the code of FPROPS [1]. That wrapper builds object-oriented Python classes
> based around C structs and associated methods. I think that an early start
> on the proposed project could be made by attempting to reproduce this
> approach for the 'instance' data structures in the ASCEND C API. You can
> take a look at how this is done currently at [2-4]. There is probably
> benefit in also wrapping some of the generic types in ASCEND, such as
> gl_list [5], which are used extensively if not quite universally, in the
> ASCEND C code.
>
> Hopefully that provides some starting points for you. Take a look and let
> me know how you go.
>
> Cheers
> JP
>
> [1]
> http://code.ascend4.org/ascend/trunk/models/johnpye/fprops/python/fprops.i?revision=2774&view=markup
> [2] http://code.ascend4.org/ascend/trunk/ascxx/instance.cpp?view=markup
> [3] http://code.ascend4.org/ascend/trunk/ascxx/instance.h?view=log
> [4] http://code.ascend4.org/ascend/trunk/ascxx/ascpy.i?view=markup
> [5] http://code.ascend4.org/ascend/trunk/ascend/general/list.h?view=markup
>
>
> On 05/03/15 06:31, Shivam Chaturvedi wrote:
>
> Hello ASCEND Devs,
> I am Shivam Chaturvedi. I had a look at one of your projects that I became
> keenly interested on. It was the "Python Bindings Rewrite" project, which
> understandably requires the knowledge of Python, C++ and knowledge of
> concerned programming paradigms such as interfaces, etc. I'm fluent in both
> the languages at a decent level and have previously worked a bit in both
> (Even taught Python to undergrad students!).
> I have downloaded ASCEND on my linux machine (and started to fiddle with
> it!) to see how I would think the software must've been put up, in addition
> to (trying) to read the source (mainly examples for now).
> I wish to contribute in all ways possible to this project.
> Might be needless, but to state, I'm a student at IIIT-Delhi, India, and
> would love to work with you guys.
> Please let me know what more I can do to help out.
>
> Thanks!
> Shivam Chaturvedi
>
>
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