[cfe-dev] [llvm-dev] clang_indexTranslationUnit and macro expansions

[Andrey Lushnikov via cfe-dev]

Follow-up question: is it even recommended to use Indexing API?
(`clang_indexTranslationUnit` and friends)
Other projects I looked into (e.g. rtags:
https://github.com/Andersbakken/rtags) don't use it and rely solely on
low-level AST traversal
with `clang_visitChildren`.




On Wed, Sep 30, 2020 at 8:15 AM Andrey Lushnikov <aslushnikov at gmail.com>
wrote:

> Hi!
>
>
> First of all, thank you for all the work on LLVM. I've been playing with
> libclang for a while and it's been an enjoyable experience.
>
>
> I'm using libclang to build cross-references for a C++ codebase. I use the
> `clang_indexTranslationUnit` API, which works very well, but unfortunately
>
> reports declarations and references that are coming from macro expansions.
>
>
> Now, declarations and references from macro expansions don't really have
> locations in source code, so I'd love to ignore them.
>
>
> My questions are:
>
> - Is there a way to detect declarations and references from macro
> expansions?
>
> - If not, shall I switch to `clang_visitChildren` API instead?
>
> - Alternatively, would it be a good idea for me to try contributing a new
> `CXIndexOpt_IgnoreMacroExpansions` option to the API?
>
>
> Thanks,
>
> Andrey
>
> P.S. I tried writing to llvm-dev at lists.llvm.org, but was advised to write
> here instead. Please let me know if this is not the best list for this type
> of question.
>
>
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