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From: "João Távora" <joaotavora@gmail.com>
To: Dmitry Gutov <dgutov@yandex.ru>
Cc: Phil Sainty <psainty@orcon.net.nz>, emacs-devel@gnu.org
Subject: Re: Tree sitter: Should *-ts-modes derive from a common base?
Date: Sat, 25 Mar 2023 09:16:22 +0000	[thread overview]
Message-ID: <CALDnm5336vCQGiyHKa_tvW=McUY6ZRC6S_9PX3ieuYjwr915nA@mail.gmail.com> (raw)
In-Reply-To: <6b7d4ada-573f-7847-752a-097f6ac53b8a@yandex.ru>

On Wed, Mar 22, 2023 at 7:32 AM Dmitry Gutov <dgutov@yandex.ru> wrote:
>
> On 21/03/2023 11:30, Phil Sainty wrote:
> > The case I've spotted thus far which wouldn't work is the CSS modes,
> > where we have this:
> >
> > (define-derived-mode css-base-mode prog-mode "CSS"
> > (define-derived-mode css-mode css-base-mode "CSS"
> > (define-derived-mode css-ts-mode css-base-mode "CSS"
> >
> > That could be refactored if this idea was a sensible one.
>
> How would you refactor it? We don't have multiple inheritance.

There are many mechanisms of code reuse besides inheritance.
In lisp-based modes there is the the lisp-mode-variables, for
example.  So IMO it's fine to use a combination of single
inheritance and such a mechanism.

Phil's idea is very pertinent and should be addressed sooner
not later, because the potential for messy duplicated code or
just misinheritance is high later down the road.  The lisp-mode
fiasco comes to mind.

João



  reply	other threads:[~2023-03-25  9:16 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-21  9:30 Tree sitter: Should *-ts-modes derive from a common base? Phil Sainty
2023-03-22  7:32 ` Dmitry Gutov
2023-03-25  9:16   ` João Távora [this message]
2023-03-22 10:07 ` Daniel Martín
2023-03-23  8:50 ` Phil Sainty

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