cc-mode and continuing a for loop statement over two lines

cc-mode and continuing a for loop statement over two lines

[nullius.filius]

I would like to indent twice if I have to continue a
for loop statement onto more than one line. For example,
as in the following code-


for (vector<int>::iterator iter(data.begin());
        iter != data.end(); ++iter)
{
    // do something
}

This is so cc-mode formats like the ANSI predefined style
in astyle.

This is the code in my dot emacs (boosted from elsewhere).
I have not found a variable for tweaking continuation lines
from inside for loop statements.

------------------------------------------------------------------------
(defconst c-indentation 4)
(defvar my-c-style
  `((c-basic-offset                . ,c-indentation)
    (c-tab-always-indent           . t)
    (c-comment-only-line-offset    . 0)
    (c-hanging-braces-alist        . ((substatement-open . (before
after))
                                      (brace-list-open)
                                      (brace-list-close)
                                      (brace-list-intro)
                                      (brace-entry-open)))
    (c-hanging-colons-alist        . ((member-init-intro before)
                                      (inher-intro)
                                      (case-label after)
                                      (label after)
                                      (access-label after)))
    (c-cleanup-list                . (scope-operator
                                      empty-defun-braces
                                      defun-close-semi))
    (c-offsets-alist               . ((arglist-close .
                                        c-lineup-arglist-close-under-
paren)
                                      (substatement-open . 0)
				      (innamespace . nil)
				      (label . nil)
                                      (block-open        . 0)
                                      (inline-open       . 0)
                                      (template-args-cont .
                                         c-lineup-template-args)
                                      (inher-cont     . c-lineup-multi-
inher)
                                      (statement-cont . (c-lineup-math
++))
                                      (knr-argdecl-intro . -)))
    (c-echo-syntactic-information-p . t)
    )
  "My C Programming Style")

(defun my-c-mode-common-hook ()
  (c-add-style "PERSONAL" my-c-style t))

(add-hook 'c++-mode-hook 'my-c-mode-common-hook)
 
------------------------------------------------------------------------

Re: cc-mode and continuing a for loop statement over two lines

[Nikolaj Schumacher]

nullius.filius@gmail.com wrote:

> I would like to indent twice if I have to continue a
> for loop statement onto more than one line. For example,
> as in the following code-
>
> for (vector<int>::iterator iter(data.begin());
>         iter != data.end(); ++iter)
> {
>     // do something
> }

Here's what I came up with:

(defun indent-for-cont (langelem)
  (let ((beg (car (c-declaration-limits nil))))
    (if (equal "for" (buffer-substring-no-properties beg (+ 3 beg)))
        '+
      0)))

Then add this:
(statement . indent-for-cont)
to your c-offsets-alist.


regards,
Nikolaj Schumacher

Re: cc-mode and continuing a for loop statement over two lines

[nullius.filius]

Thank you Nikolaj,

I could not get your code snippet to double indent. I like
the concept behind your hack, and I will play around with
it because I'm sure it will work.

Nikolaj Schumacher wrote:
> nullius.filius@gmail.com wrote:
>
> > I would like to indent twice if I have to continue a
> > for loop statement onto more than one line. For example,
> > as in the following code-
> >
> > for (vector<int>::iterator iter(data.begin());
> >         iter != data.end(); ++iter)
> > {
> >     // do something
> > }
>
> Here's what I came up with:
>
> (defun indent-for-cont (langelem)
>   (let ((beg (car (c-declaration-limits nil))))
>     (if (equal "for" (buffer-substring-no-properties beg (+ 3 beg)))
>         '+
>       0)))
>
> Then add this:
> (statement . indent-for-cont)
> to your c-offsets-alist.
>
>
> regards,
> Nikolaj Schumacher