From: Dmitry Gutov <dgutov@yandex.ru>
To: Stephen Leake <stephen_leake@stephe-leake.org>
Cc: John Wiegley <jwiegley@gmail.com>, emacs-devel@gnu.org
Subject: Re: project.el semantics
Date: Sun, 22 Nov 2015 07:32:45 +0200 [thread overview]
Message-ID: <5651537D.8040601@yandex.ru> (raw)
In-Reply-To: <86h9kf655z.fsf@stephe-leake.org>
On 11/21/2015 12:03 PM, Stephen Leake wrote:
>> For instance, in can include the test roots in there. Or, I don't
>> know, some other kinds of directories that aren't supposed to be
>> traversed recursively.
>
> Then it also needs to indicate which are recursive and which aren't. One
> way is to return a cons (recursive-dirs . non-recursive-dirs).
Those will be directories of different kinds, and the "non-recursive"
(or, most-likely) "non-traversable" status would be reflected in their
category name.
For instance, some directory might contain the key config files of the
project; its category, then, will be "config-file-are-here".
I'm not sure it would be a good idea to have two directories belonging
to the same set of categories, that the callers would have to treat
differently WRT traversal.
> What is the use case for this?
For instance, in addition to the "project root" (let's imagine there's
just one root), a Java project can have an src and test directories
inside it. The backend could report that "src" belongs to the
"source-roots" category, and "test" belongs to "test-roots" category.
Then, provided there is a stable test file naming convention, we could
define commands that would allow the user to jump between the source
file and its test, and perform other related operations.
> 1 is satisfied by project-all-roots (ie (append (project-roots prj)
> (project-library-roots prj))) and project-ignores. Allowing
> project-all-roots to return non-roots breaks this case.
Basically, the caller would have to pass the returned value through
`project-combine-directory'. Alternatively, we can have a helper like this:
(defun project-directories-in-categories (project &rest categories)
(project-combine-directories
(cl-delete-if-not
(lambda (dir)
(cl-subsetp categories (project-categories project dir)))
(project-directories project))))
Or, as yet another option, we can define `project-directories' to have
this signature, and the project backend to implement it. But I'd prefer
to have the helper.
> 2 is not supported directly. It is not simple to get the list of all
> directories from project-all-roots and project-ignores.
I'm not convinced it's actually needed. Like discussed previously, the
capability encourages slower implementations. Instead, where possible,
the API consumers should combine 'find' with other programs.
Even so, while it's "not simple", it perfectly possible to implement it
on top of the API. So we can include it as a utility function, but
there's no need to make it a method, for a backend to implement.
> For Emacs 25, we should keep this as simple as possible; provide two
> functions, one that returns all recursive roots and ignores, another
> that returns a non-recursive list of all directories. Backends can
> provide whichever is convenient; project.el can convert between them.
And I'm against that:
a) See above.
b) Having only these two functions won't make it possible to have both
project-find-regexp and project-or-libraries-find-regexp (or whatever
its name will be). I've explained why its beneficial to have both, and
the distinction between them.
>> - If we're only documenting the "categories" key inside
>> project-metadata, why not have a project-directory-categories method
>> instead? We can add the -metadata method, too, now or later.
>
> This should wait for Emacs 26; we don't have a solid proposal.
I thought the idea is pretty simple. What would you like me to clarify?
next prev parent reply other threads:[~2015-11-22 5:32 UTC|newest]
Thread overview: 162+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-15 20:23 find-file-project Stephen Leake
2015-09-15 22:21 ` find-file-project Dmitry Gutov
2015-09-16 2:49 ` find-file-project Stephen Leake
2015-09-16 3:26 ` find-file-project Stephen Leake
2015-09-16 3:34 ` find-file-project Stephen Leake
2015-09-16 3:38 ` find-file-project Dmitry Gutov
2015-09-16 12:56 ` find-file-project Stephen Leake
2015-09-16 14:37 ` find-file-project Dmitry Gutov
2015-09-16 16:41 ` find-file-project Stephen Leake
2015-09-16 16:59 ` find-file-project Stephen Leake
2015-09-16 17:13 ` find-file-project Dmitry Gutov
2015-09-16 17:25 ` find-file-project Dmitry Gutov
2015-09-16 21:01 ` find-file-project Stephen Leake
2015-09-17 17:45 ` find-file-project Dmitry Gutov
2015-09-18 16:08 ` project.el semantics Stephen Leake
2015-09-19 0:17 ` Dmitry Gutov
2015-11-08 1:47 ` Dmitry Gutov
2015-11-08 7:11 ` Stephen Leake
2015-11-08 13:07 ` Dmitry Gutov
2015-11-08 20:11 ` Dmitry Gutov
2015-11-09 9:10 ` Stephen Leake
2015-11-09 13:27 ` Dmitry Gutov
2015-11-09 18:15 ` Stephen Leake
2015-11-10 1:32 ` Dmitry Gutov
2015-11-10 2:40 ` Dmitry Gutov
2015-11-10 17:36 ` Stephen Leake
2015-11-11 0:47 ` Dmitry Gutov
2015-11-11 10:27 ` Stephen Leake
2015-11-11 13:21 ` Dmitry Gutov
2015-11-11 16:48 ` John Wiegley
2015-11-11 17:03 ` Dmitry Gutov
2015-11-11 17:22 ` John Wiegley
2015-11-11 21:46 ` Dmitry Gutov
2015-11-11 22:30 ` John Wiegley
2015-11-12 2:21 ` Dmitry Gutov
2015-11-12 17:26 ` John Wiegley
2015-11-12 17:53 ` Dmitry Gutov
2015-11-12 18:04 ` Dmitry Gutov
2015-11-12 18:17 ` John Wiegley
2015-11-12 18:26 ` John Mastro
2015-11-12 23:37 ` Dmitry Gutov
2015-11-12 18:50 ` Dmitry Gutov
2015-11-11 22:41 ` Stephen Leake
2015-11-11 22:14 ` Stephen Leake
2015-11-11 23:26 ` Dmitry Gutov
2015-11-12 6:44 ` Stephen Leake
2015-11-12 11:32 ` Dmitry Gutov
2015-11-12 19:28 ` Stephen Leake
2015-11-12 22:04 ` Dmitry Gutov
2015-11-19 2:21 ` Dmitry Gutov
2015-11-20 18:40 ` John Wiegley
2015-11-21 10:03 ` Stephen Leake
2015-11-21 10:10 ` Stephen Leake
2015-11-22 5:18 ` John Wiegley
2015-11-22 5:36 ` Dmitry Gutov
2015-11-22 5:43 ` John Wiegley
2015-11-22 5:58 ` Dmitry Gutov
2015-11-22 16:55 ` John Wiegley
2015-11-22 17:13 ` Dmitry Gutov
2015-11-22 19:54 ` John Wiegley
2015-11-22 21:27 ` John Wiegley
2015-11-23 1:14 ` Dmitry Gutov
2015-11-23 22:04 ` Steinar Bang
2015-11-23 23:17 ` Dmitry Gutov
2015-11-23 7:43 ` Stephen Leake
2015-11-23 12:59 ` Dmitry Gutov
2015-12-16 4:06 ` Dmitry Gutov
2015-12-16 6:52 ` John Wiegley
2015-12-28 4:20 ` Dmitry Gutov
2015-11-22 22:04 ` Stephen Leake
2015-11-22 23:21 ` Dmitry Gutov
2015-11-23 2:06 ` Richard Stallman
2015-11-22 5:32 ` Dmitry Gutov [this message]
2015-11-09 22:16 ` John Wiegley
2015-11-10 0:58 ` Dmitry Gutov
2015-11-10 1:07 ` John Wiegley
2015-11-10 1:18 ` Dmitry Gutov
2015-11-10 1:40 ` John Wiegley
2015-11-10 3:23 ` Dmitry Gutov
2015-11-10 6:00 ` John Wiegley
2015-11-10 10:54 ` Dmitry Gutov
2015-11-10 14:21 ` John Wiegley
2015-11-10 23:41 ` Stephen Leake
2015-11-11 0:56 ` Dmitry Gutov
2015-11-11 1:17 ` John Wiegley
2015-11-11 1:31 ` Dmitry Gutov
2015-11-11 9:55 ` Stephen Leake
2015-11-11 13:30 ` Dmitry Gutov
2015-11-12 8:46 ` Steinar Bang
2015-11-12 19:35 ` Stephen Leake
2015-11-11 9:44 ` Stephen Leake
2015-11-11 13:39 ` Dmitry Gutov
2015-11-10 17:38 ` Stephen Leake
2015-11-10 19:47 ` Dmitry Gutov
2015-09-16 4:41 ` find-file-project Dmitry Gutov
2015-09-16 13:04 ` find-file-project Stefan Monnier
2015-09-16 17:01 ` find-file-project Stephen Leake
2015-09-16 13:31 ` find-file-project Stephen Leake
2015-09-16 14:13 ` find-file-project Stephen Leake
2015-09-16 15:05 ` find-file-project Dmitry Gutov
2015-09-16 16:58 ` find-file-project Stephen Leake
2015-09-17 17:15 ` find-file-project Dmitry Gutov
2015-09-18 17:14 ` project.el semantics Stephen Leake
2015-09-19 0:08 ` Dmitry Gutov
2015-09-19 12:07 ` Stephen Leake
2015-09-19 12:40 ` Dmitry Gutov
2015-09-16 17:04 ` find-file-project Dmitry Gutov
2015-09-16 21:11 ` find-file-project Stephen Leake
2015-09-17 17:52 ` find-file-project Dmitry Gutov
2015-09-17 1:26 ` find-file-project Stefan Monnier
2015-09-17 18:09 ` find-file-project Dmitry Gutov
2015-09-18 17:07 ` find-file-project Stefan Monnier
2015-09-18 23:41 ` find-file-project Dmitry Gutov
2015-09-19 4:13 ` find-file-project Stefan Monnier
2016-01-06 1:29 ` find-file-project Dmitry Gutov
2016-01-07 4:52 ` find-file-project Stefan Monnier
2016-01-07 17:09 ` find-file-project Dmitry Gutov
2016-01-07 7:12 ` find-file-project Stephen Leake
2016-01-07 17:55 ` find-file-project Dmitry Gutov
2016-01-07 18:26 ` find-file-project Dmitry Gutov
2016-01-07 19:58 ` find-file-project Stephen Leake
2016-01-07 21:12 ` find-file-project Dmitry Gutov
2016-01-08 19:11 ` find-file-project Stephen Leake
2016-01-08 23:49 ` find-file-project Dmitry Gutov
2016-01-09 12:18 ` find-file-project Stephen Leake
2016-01-09 17:11 ` find-file-project Dmitry Gutov
2016-01-08 1:26 ` find-file-project John Wiegley
2016-01-08 1:38 ` find-file-project Dmitry Gutov
2016-01-08 2:19 ` find-file-project Richard Copley
2016-01-08 11:34 ` find-file-project Dmitry Gutov
2016-01-08 7:39 ` find-file-project Stefan Monnier
2016-01-19 6:15 ` find-file-project Dmitry Gutov
2016-01-19 14:20 ` find-file-project Stefan Monnier
2016-01-20 0:51 ` find-file-project Dmitry Gutov
2016-01-20 1:32 ` find-file-project Stefan Monnier
2016-01-20 1:47 ` find-file-project Dmitry Gutov
2016-01-20 2:25 ` find-file-project Stefan Monnier
2016-01-20 15:40 ` find-file-project Dmitry Gutov
2016-01-20 21:58 ` find-file-project Stefan Monnier
2016-01-20 22:12 ` find-file-project Dmitry Gutov
2016-01-20 22:17 ` find-file-project Drew Adams
2016-01-20 22:26 ` find-file-project Dmitry Gutov
2016-01-20 22:48 ` find-file-project Drew Adams
2016-01-20 22:50 ` find-file-project Dmitry Gutov
2016-01-20 23:09 ` find-file-project Drew Adams
2016-01-20 23:23 ` find-file-project Dmitry Gutov
2016-01-20 23:46 ` find-file-project Drew Adams
2016-01-20 23:51 ` find-file-project Dmitry Gutov
2016-01-21 0:08 ` find-file-project Drew Adams
2016-01-21 0:21 ` find-file-project Dmitry Gutov
2016-01-21 3:03 ` find-file-project Dmitry Gutov
2016-01-21 13:46 ` find-file-project Stefan Monnier
2016-01-17 21:23 ` find-file-project John Wiegley
2016-01-17 21:25 ` find-file-project Dmitry Gutov
2016-01-17 23:07 ` find-file-project John Wiegley
2016-01-18 1:42 ` find-file-project Dmitry Gutov
2015-09-16 7:16 ` find-file-project Eli Zaretskii
2015-09-16 13:06 ` find-file-project Stefan Monnier
2015-09-16 13:40 ` find-file-project Stephen Leake
2015-09-16 14:32 ` find-file-project Eli Zaretskii
2015-09-16 14:57 ` find-file-project Dmitry Gutov
2015-09-16 17:03 ` find-file-project Stephen Leake
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