linux-kernel - Re: [RFC v3] scripts: kernel-doc: reduce repeated regex expressions into variables

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Message-ID: <99186604-8ed6-ff72-0308-9ca788db3a51@gmail.com>
Date:   Sat, 1 May 2021 15:00:24 +0530
From:   Aditya Srivastava <yashsri421@...il.com>
To:     Jonathan Corbet <corbet@....net>
Cc:     lukas.bulwahn@...il.com, willy@...radead.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC v3] scripts: kernel-doc: reduce repeated regex expressions
 into variables

On 30/4/21 5:09 am, Jonathan Corbet wrote:
> Aditya Srivastava <yashsri421@...il.com> writes:
> 
>> There are some regex expressions in the kernel-doc script, which are used
>> repeatedly in the script.
>>
>> Reduce such expressions into variables, which can be used everywhere.
>>
>> A quick manual check found that no errors and warnings were added/removed
>> in this process.
>>
>> Suggested-by: Jonathan Corbet <corbet@....net>
>> Signed-off-by: Aditya Srivastava <yashsri421@...il.com>
>> ---
>> Changes in v3:
>> - Remove variables for separate qualifiers in "sub dump_struct"
>> - Make a common variable for all the qualifiers
>> - Make $attribute global variable to use it at "sub check_sections" as well
>>
>> Changes in v2:
>> - Rename $pointer_function to $function_pointer
>> - Combine elsif-block expressions at "sub dump_function" into lesser regex expressions
>> - Combine $prototype_end1,$prototype_end2 expressions into a common $prototype_end
>>
>>  scripts/kernel-doc | 71 ++++++++++++++++++++++------------------------
>>  1 file changed, 34 insertions(+), 37 deletions(-)
> 
> So this looks good but ... it adds a warning to the build:
> 
> /stuff/k/git/kernel/Documentation/driver-api/media/v4l2-controls:823: ./include/media/v4l2-ctrls.h:964: WARNING: Invalid C declaration: Expected identifier in nested name. [error at 6]
>   const * v4l2_ctrl_get_menu (u32 id)
>   ------^
> 
> So it looks like something isn't being parsed quite identically?
>

Hi Jonathan!
I could not reproduce this error..
Can you suggest me how can I reproduce this error?
I ran kernel-doc -none {$file} over the tree.

Probably, this is not a kernel-doc error

Thanks
Aditya