[cfe-dev] Is there anyway I can add some custom information to the AST?

[Yafei Liu via cfe-dev]

By means " I have to wait until Clang11 has released", I mean I have to
wait for Clang11 to make my plugin a public use (used by others).

On Sun, Jul 5, 2020 at 1:58 AM Yafei Liu <yfliu at mobvoi.com> wrote:

> Hi Nathan, I found that this example is based on clang11, my clang10
> libraries do not have corresponding classes. I read the clang11 release
> note, which is in progressing, and found that in
> https://clang.llvm.org/docs/ReleaseNotes.html#attribute-changes-in-clang,
> attribute plugin is a new feature.
>
> So does it mean:
> 1. Even if I implemented an attribute plugin (with the code on master
> branch), I have to wait until Clang11 has released?
> 2. Or, the attribute plugin can be used in older versions of Clang?
>
> On Sun, Jul 5, 2020 at 12:34 AM Nathan James <n.james93 at hotmail.co.uk>
> wrote:
>
>> Hi Yafei,
>>
>> You can use the Attribute system to decorate AST nodes, they can also
>> be loaded via plugins. See `clang/examples/Attrbiute/` to see how they
>> are created and registered.
>>
>> Then you can add an attribute to the class decl, for example
>> > class [[convert]] MyVector {};
>>
>> Hope this helps,
>> Nathan James
>>
>> On Sun, 2020-07-05 at 00:05 +0800, Yafei Liu via cfe-dev wrote:
>> > Hi, all.
>> > I'm writing some tools to convert a C++ class to something else, and
>> > I want to add  some custom information to the AST.
>> >
>> > At first, I decided to add some comments to mark some classes, but I
>> > found that the AST does not contain comments.
>> >
>> > Secondly, I want to customize an attribute, but I found that it needs
>> > to recompile the Clang, I didn't find a "plug-in" way.  Since my
>> > tools are designed for public usage, a customized compiler is not
>> > very considerable.
>> >
>> > Currently I have to force the user to declare their class names and
>> > field names with some special rules, but this is not very acceptable
>> > to me.
>> >
>> > So anyone knows if there's a better way to add some custom
>> > information to the AST?
>> > _______________________________________________
>> > cfe-dev mailing list
>> > cfe-dev at lists.llvm.org
>> > https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev
>>
>>
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