[cfe-dev] A Clang plugin which iterates over macro declarations

[Reed Mangino]

Hi,
 
I know how to write a function pass in LLVM to iterate over function decls. I'd like to do something similiar using Clang for C/C++/ObjC macros (#define foo).
 
I haven't been able to find anything in the docs which describes how to hook into Clang's preprocessing phase. Did I just miss it? Are there any samples which demonstrate this?
 
Thank you in advance!
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