mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-12-01 15:14:16 +01:00
89 lines
2.8 KiB
Text
89 lines
2.8 KiB
Text
|
C/C++ coding style
|
||
|
|
==================
|
||
|
|
|
||
|
|
Tools
|
||
|
|
-----
|
||
|
|
|
||
|
|
There is a file uncrustify.cfg in this directory that can be used to
|
||
|
|
approximate the prevailing code style. You can run it with e.g.
|
||
|
|
|
||
|
|
uncrustify --replace -c devel/uncrustify.cfg foo.c
|
||
|
|
|
||
|
|
You still have to use your judgement about accepting or rejecting the
|
||
|
|
changes uncrustify makes. With a nice git frontend, you can add the
|
||
|
|
lines you agree with and reject the rest.
|
||
|
|
|
||
|
|
For Emacs users, the file .dir-locals.el in the top level source
|
||
|
|
directory will configure c-mode to automatically meet most of the
|
||
|
|
basic layout rules. I
|
||
|
|
|
||
|
|
Indentation, Whitespace, and Layout
|
||
|
|
-----------------------------------
|
||
|
|
|
||
|
|
The following nonsense code demonstrates many aspects of the style:
|
||
|
|
|
||
|
|
static some_type
|
||
|
|
function (param_type param, param_type param)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for (i = 0; i < 10; i++) {
|
||
|
|
int j;
|
||
|
|
|
||
|
|
j = i + 10;
|
||
|
|
|
||
|
|
some_other_func (j, i);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
* Indent is 4 spaces with mixed tab/spaces and a tab width of 8.
|
||
|
|
(Specifically, a line should begin with zero or more tabs followed
|
||
|
|
by fewer than eight spaces.)
|
||
|
|
|
||
|
|
* Use copious whitespace. In particular
|
||
|
|
- there is a space between the function name and the open paren in a call.
|
||
|
|
- likewise, there is a space following keywords such as if and while
|
||
|
|
- every binary operator should have space on either side.
|
||
|
|
|
||
|
|
* No trailing whitespace. Please enable the standard pre-commit hook
|
||
|
|
in git (or an equivalent hook).
|
||
|
|
|
||
|
|
* The name in a function prototype should start at the beginning of a line.
|
||
|
|
|
||
|
|
* Opening braces "cuddle" (they are on the same line as the
|
||
|
|
if/for/while test) and are preceded by a space. The opening brace of
|
||
|
|
functions is the exception, and starts on a new line.
|
||
|
|
|
||
|
|
* Comments are always C-style /* */ block comments. They should start
|
||
|
|
with a capital letter and generally be written in complete
|
||
|
|
sentences. Public library functions are documented immediately
|
||
|
|
before their prototype in lib/notmuch.h. Internal functions are
|
||
|
|
typically documented immediately before their definition.
|
||
|
|
|
||
|
|
* Code lines should be less than 80 columns and comments should be
|
||
|
|
wrapped at 70 columns.
|
||
|
|
|
||
|
|
Naming
|
||
|
|
------
|
||
|
|
|
||
|
|
* Use lowercase_with_underscores for function, variable, and type
|
||
|
|
names.
|
||
|
|
|
||
|
|
* All structs should be typedef'd to a name ending with _t. If the
|
||
|
|
struct has a tag, it should be the same as the typedef name, minus
|
||
|
|
the trailing _t.
|
||
|
|
|
||
|
|
libnotmuch conventions
|
||
|
|
----------------------------------
|
||
|
|
|
||
|
|
* Functions starting with notmuch_ in lib/notmuch.h are public and are
|
||
|
|
automatically exported from the shared library. Private library
|
||
|
|
functions should generally either be static or, if they are shared
|
||
|
|
between compilation units, start with _notmuch.
|
||
|
|
|
||
|
|
* Functions in libnotmuch must not access user configuration files
|
||
|
|
(i.e. .notmuch-config)
|
||
|
|
|
||
|
|
* Code which needs to be accessed from both the CLI and from
|
||
|
|
libnotmuch should be factored out into libutil (under util/).
|