navigate in C

navigate in C

[Pedro Sa da Costa]

1 - Is there a way in C mode to, by selecting the .h file or a method 
and press a shortcut key, go that file or function?

For example:

#include "header.h"

by pressing F3 in the selected "header.h", or simply have the cursor of 
the header file, open the file.

and

int test(){
    call_test();

}

have the cursor above "call_test()" call and pressing F3, goes to the 
function.


Thanks,
Pedro

Re: navigate in C

[Kevin Rodgers]

Pedro Sa da Costa wrote:
> 1 - Is there a way in C mode to, by selecting the .h file or a method 
> and press a shortcut key, go that file or function?
> 
> For example:
> 
> #include "header.h"
> 
> by pressing F3 in the selected "header.h", or simply have the cursor of 
> the header file, open the file.

,----[ C-h f ff-find-related-file RET ]
| ff-find-related-file is an alias for `ff-find-other-file' in 
`find-file.el'.
| (ff-find-related-file &optional in-other-window ignore-include)
|
| Find the header or source file corresponding to this file.
| Being on a `#include' line pulls in that file.
|
| If optional in-other-window is non-nil, find the file in the other window.
| If optional ignore-include is non-nil, ignore being on `#include' lines.
|
| Variables of interest include:
|
|  - `ff-case-fold-search'
|    Non-nil means ignore cases in matches (see `case-fold-search').
|    If you have extensions in different cases, you will want this to be 
nil.
|
|  - `ff-always-in-other-window'
|    If non-nil, always open the other file in another window, unless an
|    argument is given to `ff-find-other-file'.
|
|  - `ff-ignore-include'
|    If non-nil, ignores #include lines.
|
|  - `ff-always-try-to-create'
|    If non-nil, always attempt to create the other file if it was not 
found.
|
|  - `ff-quiet-mode'
|    If non-nil, traces which directories are being searched.
|
|  - `ff-special-constructs'
|    A list of regular expressions specifying how to recognize special
|    constructs such as include files etc, and an associated method for
|    extracting the filename from that construct.
|
|  - `ff-other-file-alist'
|    Alist of extensions to find given the current file's extension.
|
|  - `ff-search-directories'
|    List of directories searched through with each extension specified in
|    `ff-other-file-alist' that matches this file's extension.
|
|  - `ff-pre-find-hook'
|    List of functions to be called before the search for the file starts.
|
|  - `ff-pre-load-hook'
|    List of functions to be called before the other file is loaded.
|
|  - `ff-post-load-hook'
|    List of functions to be called after the other file is loaded.
|
|  - `ff-not-found-hook'
|    List of functions to be called if the other file could not be found.
|
|  - `ff-file-created-hook'
|    List of functions to be called if the other file has been created.
|
| [back]
`----

> and
> 
> int test(){
>    call_test();
> 
> }
> 
> have the cursor above "call_test()" call and pressing F3, goes to the 
> function.

I think you need to create a tags table file, select it, then find the
call_test tag.  See the "Tags Tables" section of the Emacs manual.

-- 
Kevin

Re: navigate in C

[Burton Samograd]

Pedro Sa da Costa <op132650c@mail.telepac.pt> writes:

> 1 - Is there a way in C mode to, by selecting the .h file or a method
> and press a shortcut key, go that file or function?
>
> For example:
>
> #include "header.h"
>
> by pressing F3 in the selected "header.h", or simply have the cursor
> of the header file, open the file.

I haven't found anything that does this just yet (I'm sure it's
probably somewhere in emacs), and have been writing something like
this myself...

> int test(){
>    call_test();
>
> }
>
> have the cursor above "call_test()" call and pressing F3, goes to the
> function.

Check Info: Emacs: Tags.  A simple HOWTO on tags is:

1) Run 'etags *.c *.h' in the shell to create a TAGS file (better yet
put it in your Makefile so it's run when the source is updated; it's
fast so it can be run on every rebuild).  If you do this, add 
(setq tags-revert-without-query 't) to your .emacs so you don't have
to type 'y' every time the tags file is updated.

2) Over the variable or function type M-. to go to it's definition.

3) M-* pop's (goes back to) where you were before. 

Check the info manual for more options and advanced tags usage.
Another thing about tags is you can perform completion on them using
M-TAB (which you might have to rebind if your window manager steals
that for switching windows...C-TAB would work just as well)

Hope this helps.

-- 
burton samograd                                             kruhft .at. gmail
    generative a/v artwork : http://kruhft.boldlygoingnowhere.org

Re: navigate in C

[Vagn Johansen]

Pedro Sa da Costa <op132650c@mail.telepac.pt> writes:

> 1 - Is there a way in C mode to, by selecting the .h file or a method and
> press a shortcut key, go that file or function?
>
> For example:
>
> #include "header.h"
>
> by pressing F3 in the selected "header.h", or simply have the cursor of
> the header file, open the file.

set ffap-c-path (to a list if directories) and use ffap AKA find-file-at-point

PS: add (require 'ffap) to your .emacs first
-- 
Vagn Johansen