[cfe-dev] [RFC] Easier source-to-source transformations with clang tooling

Kim Gräsman via cfe-dev cfe-dev at lists.llvm.org
Thu Jan 24 07:56:02 PST 2019


Hi Yitzhak,

I realize I'm a bit of a luddite even asking, but how tied is Stencil to
the AST matchers? It seems it would be useful for replacements based on
good old AST traversals too.

- Kim


On Fri, Nov 16, 2018, 16:22 Yitzhak Mandelbaum via cfe-dev <
cfe-dev at lists.llvm.org wrote:

> Hi all,
>
> I have a proposal for a framework that makes it easier to write source to
> source transformations with the clang::Tooling libraries, including
> clang-tidy checks.
>
> The full proposal is in this doc:
>
>
> https://docs.google.com/document/d/1ppw0RhjwsrbBcHYhI85pe6ISDbA6r5d00ot3N8cQWeQ/edit?usp=sharing
>
> From the doc:
> Transformer is a framework that aims to simplify development of
> clang-based source-to-source transformations.  It focuses on the particular
> class of transformations that act only locally — that is, use local
> information about the code and make local changes  (like a syntax-aware
> “find-and-replace”); and at scale — that is, will be carried out on many
> source files.  The target audience is users that are comfortable with, or
> willing to become comfortable with, the clang AST matchers library.
>
> I have a working prototype of this library which I've used on small
> examples inside Google.  I plan to put together a patch for reference
> next week, although the doc should stand on its own.
>
> Thanks!
> Yitzhak Mandelbaum
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