Re: Change function name style

["Andreas Röhler" <andreas.roehler@easy-emacs.de>]

Am 30.07.2010 01:48, schrieb suvayu ali:
> On 29 July 2010 14:42, Andrea Crotti<andrea.crotti.0@gmail.com>  wrote:
>>> I am a lisp newbie but how about something like this,
>>>
>>> (string-match "function-name"
>>>                           (symbol-name (if (<  (point) (point-max))
>>>                                            (face-at-point)
>>>                                          (backward-char)
>>>                                          (face-at-point))))
>>>
>>> I use this to have context sensitive abbreviation expansion. Maybe you
>>> can adapt it for your case?
>>
>> Thanks a lot, but how do you use exactly this thing that there is no
>> defun?
>>
>
> Sorry I didn't include the entire defun as it involved all the other
> things not relevant to your requirement. What I was suggesting was in
> your defun you could check for the face with that snippet and then
> apply the regex as suggested by Andreas.
>
> So something like this might work, (untested)
>
> (defun function-name-p (camelcase-to-underscore)
>    "Convert camel case function names to underscored names."
>    ;; backward-char checks if end-of-buffer as when point at e-o-b face is `nil'
>    (if (not (save-excursion
> 	     (string-match "function-name"
> 			   (symbol-name (if (<  (point) (point-max))
> 					    (face-at-point)
> 					  (backward-char)
> 					  (face-at-point))))))
>        (funcall camelcase-to-underscore)))
>
> where camelcase-to-underscore is a defun that you defined to do the
> conversion using the regex.
>
> How this works:
> It looks at the face at point and checks whether the face name has the
> string "function-name" and calls the function camelcase-to-underscore.
>
>> Anyway I see that strangely if I do face-at-point on a function call
>>
>> functionCall(...)
>>
>> I get a "default", it only recognizes functions when they're defined.
>> So maybe is not the way to go...
>>
>
> Of course my above proposal assumes you have font lock working
> properly and `M-x describe-face' returns
> "font-lock-function-name-face". For my setup the returns this name
> both in emacs-lisp-mode and c++-mode. So I was expecting it would do
> the same for your case.
>
> Good luck figuring this out. And do post back if you get any solution,
> I would be interested to know. :)
>

Interesting, but

even if it's the case or quite possible, the markup of a C-mode is 
written that way, putting different faces upon function and variable 
definitions, you can't rely on that with this purpose.

Also you can't assume, a certain face isn't used otherwise too.

To discriminate these forms, there is no way to parse the code 
understanding its content.

Some tools may provide it,

would assume Emacs' Cedet does. It comes a code-browser ECB with Emacs too.


Andreas

--
https://code.launchpad.net/~a-roehler/python-mode
https://code.launchpad.net/s-x-emacs-werkstatt/