Improving cscope support in emacs

Improving cscope support in emacs

[dhruva]

Hello,
 I am trying to use cscope in emacs using the xcscope.el distributed along with cscope. It starts a cscope process for each command which makes it very slow compared to vim. There is a line oriented mode for interacting with a running cscope process which vim uses. This makes it real fast. There is an old cscope.el which does use the line oriented mode and is fast but it is quite dated.
 I would like to know if others have their own tweaks or hacks on using cscope in emacs or plans to provide native support to cscope like vim does (it is a build time option).

-dhruva

PS: Is this a wrong list to send this mail (should I be targeting cscope mailing lists)?

Re: Improving cscope support in emacs

[Chong Yidong]

dhruva <dhruva@ymail.com> writes:

> I would like to know if others have their own tweaks or hacks on using
> cscope in emacs or plans to provide native support to cscope like vim
> does (it is a build time option).

The Semantic package included in Emacs from 23.2 onward has optional
cscope integration.  I haven't had the time to look into how well it
works, tho.

Re: Improving cscope support in emacs

[dhruva]

Hi,


----- Original Message ----
> From: Chong Yidong <cyd@stupidchicken.com>

The Semantic package included in Emacs 
> from 23.2 onward has optional
cscope integration.  I haven't had the 
> time to look into how well it
works, tho.


I just had a look at the file cedet-cscope.el, if calls cscope process for every command invocation. Looks like some plumbing to allow talking to a cscope process would help (for line mode: cscope -l)

-dhruva

Re: Improving cscope support in emacs

[Eric M. Ludlam]

On 05/01/2010 12:27 AM, dhruva wrote:
> Hi,
>
>
> ----- Original Message ----
>> From: Chong Yidong<cyd@stupidchicken.com>
>
> The Semantic package included in Emacs
>> from 23.2 onward has optional
> cscope integration.  I haven't had the
>> time to look into how well it
> works, tho.
>
>
> I just had a look at the file cedet-cscope.el, if calls cscope process for every command invocation. Looks like some plumbing to allow talking to a cscope process would help (for line mode: cscope -l)
>

The cedet-cscope support just is about invoking cscope.  It is used by 
EDE (file location) and the semantic-symref functions (symbol references.)

It could probably be used for tag lookup, but no-one has written that 
interface yet.

It doesn't use the line interface because the different places from 
which it is called can be for different locations, and possibly 
different cscope dictionaries.  Not insurmountable, obviously, but I 
took the easy route that mimicked GNU Global.

CScope itself has more features than what is used by the CEDET support, 
so for the original question, it depends on if the EDE or Semantic 
features covers what he wants to do.

Eric

Re: Improving cscope support in emacs

[dhruva]

Hello,


----- Original Message ----
> From: Eric M. Ludlam <eric@siege-engine.com>

CScope itself has more features than what is used by the CEDET 
> support, so for the original question, it depends on if the EDE or Semantic 
> features covers what he wants to do.

I personally am quite happy with GNU global. Since our build infrastructure generates cscope files, I thought of using it to find symbol references, definition and calling functions etc. etags does not support references to a symbol with which we can get calling functions information. Ideal would be for compiler to generate the tag information though.

-dhruva