Re: [PATCH v2] kernel-doc: rename the kernel-doc directive 'functions' to 'identifiers'

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On Sun, 20 Oct 2019 21:17:17 +0800
Changbin Du <changbin.du@xxxxxxxxx> wrote:

> The 'functions' directive is not only for functions, but also works for
> structs/unions. So the name is misleading. This patch renames it to
> 'identifiers', which specific the functions/types to be included in
> documentation. We keep the old name as an alias of the new one before
> all documentation are updated.
> 
> Signed-off-by: Changbin Du <changbin.du@xxxxxxxxx>

So I think this is basically OK, but I have one more request...

[...]

> diff --git a/Documentation/sphinx/kerneldoc.py b/Documentation/sphinx/kerneldoc.py
> index 1159405cb920..0689f9c37f1e 100644
> --- a/Documentation/sphinx/kerneldoc.py
> +++ b/Documentation/sphinx/kerneldoc.py
> @@ -59,9 +59,10 @@ class KernelDocDirective(Directive):
>      optional_arguments = 4
>      option_spec = {
>          'doc': directives.unchanged_required,
> -        'functions': directives.unchanged,
>          'export': directives.unchanged,
>          'internal': directives.unchanged,
> +        'identifiers': directives.unchanged,
> +        'functions': directives.unchanged,  # alias of 'identifiers'
>      }
>      has_content = False
>  
> @@ -71,6 +72,7 @@ class KernelDocDirective(Directive):
>  
>          filename = env.config.kerneldoc_srctree + '/' + self.arguments[0]
>          export_file_patterns = []
> +        identifiers = None
>  
>          # Tell sphinx of the dependency
>          env.note_dependency(os.path.abspath(filename))
> @@ -86,19 +88,22 @@ class KernelDocDirective(Directive):
>              export_file_patterns = str(self.options.get('internal')).split()
>          elif 'doc' in self.options:
>              cmd += ['-function', str(self.options.get('doc'))]
> +        elif 'identifiers' in self.options:
> +            identifiers = self.options.get('identifiers').split()
>          elif 'functions' in self.options:
> -            functions = self.options.get('functions').split()
> -            if functions:
> -                for f in functions:
> -                    cmd += ['-function', f]
> -            else:
> -                cmd += ['-no-doc-sections']
> +            identifiers = self.options.get('functions').split()

Rather than do this, can you just change the elif line to read:

    elif ('identifiers' in self.options) or ('functions' in self.options):

...then leave the rest of the code intact?  It keeps the logic together,
and avoids the confusing distinction between identifiers=='' and
identifiers==None .

Thanks,

jon

>          for pattern in export_file_patterns:
>              for f in glob.glob(env.config.kerneldoc_srctree + '/' + pattern):
>                  env.note_dependency(os.path.abspath(f))
>                  cmd += ['-export-file', f]
>  
> +        if identifiers:
> +            for i in identifiers:
> +                cmd += ['-function', i]
> +        elif identifiers is not None:
> +            cmd += ['-no-doc-sections']
> +
>          cmd += [filename]
>  
>          try:
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