[cfe-dev] Rewriting AST through Clang's LibTooling APIs

[Artem Dergachev via cfe-dev]

Just to summarize:
- Yes, modifying AST is possible, albeit difficult to do correctly.
- No, squeezing the modified AST back into source code in order to 
modify the source code is definitely not supported. Replacing text with 
the help of the AST's source locations information is the intended way 
of writing tools that modify source code with clang.

On 6/13/18 1:30 PM, Koustubha Bhat via cfe-dev wrote:
> Hi All,
>
> I am exploring the LibTooling APIs to parse and perform targeted modifications to the AST.
> I see that Rewriter interface allows to insert or replace text, however the writing remains in terms of text.
> May I know if rewriting the AST itself by means of inserting or modifying AST nodes, is supported?
>
> Thank you.
>
> Regards,
> Koustubha
>
>
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