[cfe-dev] How to rewrite macros

[Hao Jiang]

Hi @clang, 
I used clang  rewriter framework to implement a source code translation
tool. The main goal of this tool is modify variable reference and CallExpr
inside each function body. But I found that rewriter could not modify macros
for example:
    msg = (MyMessage*)ic->activeEvent();
    assert(msg);
my tool translate above source code to 
    pframe->msg_0 = (MyMessage*)ic->activeEvent();    //change msg to 
pframe->msg_0
    assert(msg);                                                          
//variable msg inside macro did not change
The variables inside macro never going to be changed. Is there a way to
rewrite macros? Any suggestion is appreciated. Thank you.
Hao Jiang 

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