On Wed, Jul 3, 2019 at 8:45 PM Bryce Seager van Dyk <bvan...@mozilla.com> wrote:
> On Wednesday, July 3, 2019 at 2:27:30 PM UTC-7, Chris Peterson wrote: > > On 7/3/2019 11:37 AM, Bryce Seager van Dyk wrote: > > > I wanted to clarify, and discuss if needed, our styling of #define > guards. My understanding is that we are now using Google's style in regards > to #define guards ( > https://google.github.io/styleguide/cppguide.html#The__define_Guard). I > believe this would mean for `dom/media/foo/bar.h` I would use a `#define > DOM_MEDIA_FOO_BAR_H_` style guard. > > > > The Google style guide says: > > > > "The format of the symbol name should be <PROJECT>_<PATH>_<FILE>_H_. ... > > For example, the file foo/src/bar/baz.h in project foo should have the > > following guard: #ifndef FOO_BAR_BAZ_H_" > > > > Would our project prefix be "MOZ_"? The #define guard for > > dom/media/foo/bar.h would then be MOZ_DOM_MEDIA_FOO_BAR_H. > > Good question. Chromium's code doesn't seem to observe the project > convention in the media code I'm familiar with. FWIW Chromium's style is heavily modified: https://chromium.googlesource.com/chromium/src/+/master/styleguide/c++/c++.md although in this case they follow the Google style. > E.g. > https://cs.chromium.org/chromium/src/media/formats/mp4/track_run_iterator.h?l=36&rcl=fb277091ba0ccbf8b2869022910573386e33c6de > doesn't have a CHROMIUM prefix on its guard. Other directories rooted at > chromium/src/ also appear to not have a CHROMIUM prefix used in their > guards. Trawling some of their other projects on github I see that some do > observe the usage of the prefix and some do not. > > I thought the non-project prefix version seemed the more intuitive mapping > onto the mozilla-central structure. However, that's entirely my person > view, and is almost certainly influenced by my reading of Chromium code. > > I feel much more strongly about consistency than about either particular > style. So I appreciate hearing thoughts about what seems the > intuitive/appropriate mapping of the guidelines onto the codebase. > I think the idea behind including the project name is to make it easier to include various project headers' inside each other. Since that may not be a realistic concern for us, we may as well avoid the needless verbosity and use DOM_MEDIA_FOO_BAR_H_, I think. -- Ehsan _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
