[cfe-dev] Insertion one AST node into another at particular location

[Yitzhak Mandelbaum via cfe-dev]

Do you need to use ASTImporter, or was that just a starting point?
LibTooling has a lot of support for editing code.  clang-tidy tends to be
the easiest place to start. Additionally, clang transformer can simplify
the code editing parts with "rewrite rules":
https://github.com/llvm/llvm-project/blob/master/clang-tools-extra/clang-tidy/utils/TransformerClangTidyCheck.h
https://github.com/llvm/llvm-project/blob/master/clang/include/clang/Tooling/Transformer/RewriteRule.h


To your example, you'd write a matcher which identifies the node of
interest and then edit the code with something like
`insertAfter(node(IdBoundToInterestingNode), cat(...))`

On Fri, Aug 21, 2020 at 9:22 AM samins KAlex via cfe-dev <
cfe-dev at lists.llvm.org> wrote:

> Can I use ASTImporter for add some loop into function CompoundStatement node exactly in particular source location (or after some AST node between left bracket and right bracket)?
>
>
> Importer(ToUnit->getASTContext(), ToUnit->getFileManager(), FromUnit->getASTContext(), FromUnit->getFileManager(),
>
> Also
> It seems, I need to get ASTContext object from node "to", because ASTImporter constructor takes ASTContext "from" and "to"? But how can I do it having only "from" and "to" nodes ?
>
>
>
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