[cfe-dev] Parsing and rewriting ObjC

[Douglas Gregor]

Sent from my iPhone

On Jan 29, 2012, at 7:36 AM, Tayyab Akram <mail.tayyab at gmail.com> wrote:

> Thanks  Fariborz,
> 
> I am already looking at RewriteObjc and its really helpful. I just need to get opinion that I am on write track, and it is doable. Can you please confirm regarding PCH files? Is it possible that I generate PCH file of ObjC code on Mac OS X and then use Clang parser on Windows to parse ObjC code using that PCH file. Because I don't have Mac headers on windows so can I resolve these headers using pch file?

No, this won't work. PCH is an optimization only, which assumes that the headers are still available. 

> Thanks,
> --Tayyab  
> 
> On Sun, Jan 29, 2012 at 1:36 AM, jahanian <fjahanian at apple.com> wrote:
> 
> On Jan 28, 2012, at 11:25 AM, Tayyab Akram wrote:
> 
> > Dear all,
> >
> > I need some help/advice regarding Clang. My requirement is to do source-to-source transformation. I have to parse Objective C code and build AST and then modify AST (insert, delete or modify AST nodes) and generate finally output custom code having different semantics and syntax (not Objective C). I do not require to generate IR or binary code. Can someone please confirm following understandings,
> >
> > 1. I can parse ObjC code using Clang and then write my Visitor class by extending ASTConsumer to transform the AST and finally I will implement a CustomRewriter to generate the output in my custom format.
> >
> 
> You may take a look at objective rewriter source code in:  lib/Rewriter/RewriteObjC.cpp
> 
> - Fariborz
> 
> 
> 
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