2018-02-23 12:03 GMT+01:00 Daniel Kolesa <dan...@octaforge.org>:

> On Thu, Feb 22, 2018, at 14:05, Davide Andreoli wrote:
> > Hi all,
> >
> > I'm working again on autogenerated python bindings for efl UnifiedAPI but
> > I'm quite blocked by the lack of namespace definitions in eo/eolian.
> >
> > This is a noproblem in C and any other language without proper
> namespacing,
> > but for the langs that provide namespaces (like python and many others)
> > this need to be defined in some way.
> >
> > First of all we need to define what a namespace is, and define some rules
> > for them. Then we should implement something in Eolian so that every
> > different bindings can be generated with the same namespace hierarchy.
> >
> > Currently I'm assuming that the namespace of an object (class or
> typedecl)
> > is its full name without the last part, fe the Efl.Canvas.Object live in
> > the Efl.Canvas namespace. Is this correct? is this what we want?
>
> This is exactly correct. If you look at the Eolian API, you can even
> retrieve the namespaces using the namespaces_get functions.
>
> >
> > As for the rules we should define some, I have two on my mind atm:
> > 1. (definition) The namespace of an object is it's full name without the
> > last part (mybe lowercased?)
> > 2. A namespace cannot have the same name of another eo object (classes,
> > enums, typedefs, aliases, etc)
> >
> > The #2 is mandatory in python. I can workaround this in my generator by
> > lowercasing the namespaces (fe: efl.canvas.Object), but seems to me that
> > having 2 different things (a class and a namespace) with the same name is
> > confusing for everyone and probably will not work for languages/systems
> > without a case-sensitive filesystem (thinking about windoz here)
>
> I don't see what filesystems have to do with this, but I'm not exactly
> opposed to introducing the rule.
>

In python a tree of namespaces is created on the filesystem using a folder
for each namespace, and
in that folder there is a file for each class (more or less). To implement
the Efl namespace I must
create a folder called Efl, and the Efl.Canvas namespace is a folder inside
the Efl Folder:

Efl (the namespace, a folder)
-> Canvas (the namespace, a folder inside the Efl folder)
-> Canvas (the class, a file inside the Efl folder)

This is just not going to work in python.

I can workaround lowering the namespaces as:

efl (the namespace, a folder)
-> canvas (the namespace, a folder inside the efl folder)
-> Canvas (the class, a file inside the efl folder)

This will work on linux, no idea if it will work on windoz...


>
> >
> >
> > To better understand what I'm speaking about please give a look at:
> > http://www.gurumeditation.it/dokuwiki/doku.php?id=develop:api:start
> > http://www.gurumeditation.it/dokuwiki/doku.php?id=develop:api:namespaces
> >
> > Those pages are automatically generated, are NOT python related, and
> should
> > serve as a reference for the UnifiedAPI work in progess, they provide a
> > clean view of the current state of our new API.
> >
> >
> > waiting for comments and ideas
> > davemds
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