[cfe-dev] AST transformations in a plugin

[JohnH]

Hi,

For my instrumentation I would like to stay close to the source code so that
I can report with accurate line / column numbers and refer to source level
language constructs. So is this feasible to do in a clang plugin or is
rewriting AST a very complex thing to do? 

Examples of what I would like to do is to add a function call before every
loop and adding function calls for every array access.

   for(...)
     ;

becomes:

   here_comes_a_for_loop(...)
   for(...)
      ;

and

  a[b[i]]

becomes:

  a[array_index(..., b[array_index(..., i)]]

Regards,
John



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