Re: Quick question about Ada code formatting.

["Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>]

On 18 Feb 2006 12:19:59 GMT, Peter C. Chapin wrote:

> I realize formatting style varies from person to person and from 
> organization to organization. Nevertheless some programming language 
> communities have definite community standards about how certain language 
> constructs should be formatted. For example, it seems universal in this 
> community to name variables This_Way.
> 
> When it comes to calling subprograms I've seen some sources that put a 
> space between the name of the subprogram and the argument list.
> 
>    My_Procedure (X, Y, Z);
>    A := My_Function (B);
> 
> When wrapping such calls the entire argument list is moved down to the 
> next line.
> 
>    My_Procedure
>       (Very_Long, Argument_List, With_Many, Arguments);
> 
> In other communities (C/C++) it is more common to leave the space out 
> and also to leave the opening '(' on the same line as the procedure 
> name.
> 
> I'm wondering how universal the above style is among Ada programmers. In 
> other words: would it be desirable for me to adopt it as part of my 
> personal style guide?

I do it this way.

My_Procedure
(  A => X, -- Place for a comment
   B => Y,
   C => Z
);

Opening and closing brackets have same indentation.

 > P.S. Is there an accepted indentation depth among Ada programmers?

I use 3, because it conforms with name length of the most of operations, 
which I always put first on each new line. For example, a long formula (to 
be avoided if possible):

X :=
   (  (  Y
      +  Z
      +  ...
      )
   /  100
   );

Though it does not well fit for "and", "and then", "or else". Anyway if 
My_Function need called there, it becomes:

X :=
   (  (  Y
      +  My_Function
         (  Arg1 => Something,
            Arg2 => 34 / Z,
            ...
            ArgN => K -- It's a bad idea to have long argument lists
      )  )
   /  100
   );

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de