Re: [RFC PATCH v1 2/6] kernel-doc: replace kernel-doc perl parser with a pure python one (WIP)

From: Daniel Vetter
Date: Wed Jan 25 2017 - 01:38:40 EST

On Tue, Jan 24, 2017 at 05:13:14PM -0700, Jonathan Corbet wrote:
> On Tue, 24 Jan 2017 20:52:40 +0100
> Markus Heiser <markus.heiser@xxxxxxxxxxx> wrote:
> > This patch is the initial merge of a pure python implementation
> > to parse kernel-doc comments and generate reST from.
> >
> > It consist mainly of to parts, the parser module ( and the
> > sphinx-doc extension ( For the command line, there is
> > also a 'scripts/kerneldoc' added.::
> >
> > scripts/kerneldoc --help
> >
> > The main two parts are merged 1:1 from
> >
> > commit 3991d3c
> >
> > Take this as a starting point, there is a lot of work to do (WIP).
> > Since it is merged 1:1, you will also notice it's CodingStyle is (ATM)
> > not kernel compliant and it lacks a user doc ('Documentation/doc-guide').
> >
> > I will send patches for this when the community agreed about
> > functionalities. I guess there are a lot of topics we have to agree
> > about. E.g. the py-implementation is more strict the perl one. When you
> > build doc with the py-module you will see a lot of additional errors and
> > warnings compared to the sloppy perl one.
> Again, quick comments...
> - I would *much* rather evolve our existing Sphinx extension in the
> direction we want it to go than to just replace it wholesale.
> Replacement is the wrong approach for a few reasons, including the need
> to minimize change and preserve credit for Jani's work. Can we work on
> that basis, please?
> Ideally at the time of merging, we would be able to build the docs with
> *either* kerneldoc.

Seconded, I think renaming the extension string like this is just fairly
pointless busy-work. Kernel-doc isn't interacting perfectly with rst, but
now we already have a sizeable amount of stuff converted and going through
all that once more needs imo som really clear benefits. I think
bug-for-bug compatibility would be much better. Later on we could do
changes, on a change-by-change basis.

> - I'll have to try it out to see how noisy it is. I'm not opposed to
> stricter checks; indeed, they could be a good thing. But we might want
> to have an option so we can cut back on the noise by default.

> Thanks,
> jon

Daniel Vetter
Software Engineer, Intel Corporation