[llvm-commits] simple style checker

David Blaikie dblaikie at gmail.com
Tue May 29 20:32:30 PDT 2012

On Tue, May 29, 2012 at 8:26 PM, reed kotler <rkotler at mips.com> wrote:

> I made this simple python script to check for long lines and lines with
> tabs.
> If it will be useful, I will add more of the style rules to it.

I can't speak for whether this is the sort of thing other people will want
added to the build, or the way it should be done, but if it is/if you
choose to use it yourself, it might be good to add "trailing whitespace" as
another thing to check for.

[side note: to make such a check useful, we sort of would need to have the
codebase clean of violations to begin with (or the tool would have to be
smart enough to only flag based on revision control-reported diffs) & some
of the core developers are a bit averse to making such a sweeping change as
it would taint the revision history for "svn blame"-like tasks (though I
don't think this is actually true - since both svn and git can
annotate/blame with whitespace ignorance. Also, one of the problems with
making the codebase clean is that you can't then keep it clean - until you
have a tool like you've written/provided here, so perhaps that'll provide
extra motivation to do a full clean]

> Default is 80 character maximum lines and checking for tabs.
> Usage: style_check.py arg1 arg2 ... argn [options]
> Options:
>  -h, --help            show this help message and exit
>  --no-check-for-tabs   don't check for tabs
>  --no-check-line-length
>                        don't check line length
>  --max-line-length=**MAXLINELENGTH
>                        specify maximum line length
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