[lldb-dev] LLDB Coding Style

Zachary Turner zturner at google.com
Tue Aug 19 11:06:45 PDT 2014

Definitely agree with you on this.  I have no plans to go fixup old code,
and I don't think others should either.  And if we see a change go through
that does attempt to fix up old code, we should block it.

That said, I'm working on a clang-format file that will automate this
formatting for us (or at least, for me, should nobody else choose to use
it), and I plan to run it against all my changelists before submitting
them.  Note that this only reformats lines that have already been touched
by the CL, so there's no risk of formatting-only changes making it in.

On Tue, Aug 19, 2014 at 11:00 AM, Sean Callanan <scallanan at apple.com> wrote:

> One point about this discussion, by the way.
> While I support adherence to a consistent style for new/changed code, this
> should in no way be taken as support for going through and fixing
> indentation/style on old code.
> We have internal branches that become hell to merge when e.g. spacing has
> been altered subtly, or brace depth is changed…
> If we all do our part to clean the parts we’re touching, then I think that
> will be enough to keep LLDB clean.
> Sean
> On Aug 19, 2014, at 10:16 AM, Zachary Turner <zturner at google.com> wrote:
> I brought this up in a thread on lldb-commits, but since it is of more
> general interest, I want to make a thread here as well.
> Can we have clear direction on LLDB coding style?  Ideally in the form of
> an update to lldb.llvm.org, but as that might require a little more
> effort, even some details in a response to this thread would be a help.
>  Some things I've deduced from looking at the code, and other things I'm
> not so sure about, because of inconsistencies in the code or just no clear
> rule.
> Indentation width: 4
> Column limit: 140  (does this apply to comments too?  Most
> function-declaration comments seem to wrap at 80)
> Brace style: Allman
>     if (foo)
>     {
>         // code here
>     }
> Break after function return type: Always, only on declarations, only on
> definitions, only in headers, or never?
> Space before function parentheses: When?
> Indent case labels inside switch: A or B below?
>     switch (foo)
>     {
>         case A:
>     case B:
>     }
> Indent braces inside of a case: A or B below?
>     switch (foo)
>     {
>         case A:
>         {
>         }
>         case B:
>             {
>             }
>     }
> Any other rules I should be cognizant of?
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