llvm dev - Jun 2012 - [LLVMdev] Is it possible to convert C++ code to C++/CX code via a plugin of clang?

Hello Guys,I am developing a plugin of clang and hope it can convert some C++
functions to C++/CX wrapper classes for WinRT system. If so, it would do a lot
of work automatically.Now I have been somewhere. Using clang libraries, I could
fetch the elements of C++ code for example, return type, function name,
parameter list and others. Should I inherit "clang::Decl" to express
C++/CX elements like Objective-C does?I think if I want to output C++/CX code
using clang, I should inherit some classes in CodeGen. Should I do this? Or is
it possible to be done in a plugin?Could you help me?Thank you,Jeffrey.
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CC'ed to clang ML. You can post clang question on clang ML. :-)

On Thu, Jun 07, 2012 at 06:23:15PM +0800, yangzhi0104 at sohu.com
wrote:
> Hello Guys,
> 
> I am developing a plugin of clang and hope it can convert some C++
functions to
> C++/CX wrapper classes for WinRT system. If so, it would do a lot of work
> automatically.
> 
> Now I have been somewhere. Using clang libraries, I could fetch the
elements of
> C++ code for example, return type, function name, parameter list and
others.
> Should I inherit "clang::Decl" to express C++/CX elements like
Objective-C
> does?
> 
> I think if I want to output C++/CX code using clang, I should inherit some
> classes in CodeGen. Should I do this? Or is it possible to be done in a
plugin?
> 
> Could you help me?
> 
> Thank you,
> Jeffrey.
> 
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev

-- 
Wei-Ren Chen (陳韋任)
Computer Systems Lab, Institute of Information Science,
Academia Sinica, Taiwan (R.O.C.)
Tel:886-2-2788-3799 #1667
Homepage: http://people.cs.nctu.edu.tw/~chenwj

On Jun 7, 2012, at 8:13 PM, 陳韋任 (Wei-Ren Chen) wrote:
> 
>  CC'ed to clang ML. You can post clang question on clang ML. :-)
> 
> On Thu, Jun 07, 2012 at 06:23:15PM +0800, yangzhi0104 at sohu.com wrote:
>> Hello Guys,
>> 
>> I am developing a plugin of clang and hope it can convert some C++
functions to
>> C++/CX wrapper classes for WinRT system. If so, it would do a lot of
work
>> automatically.
>> 
>> Now I have been somewhere. Using clang libraries, I could fetch the
elements of
>> C++ code for example, return type, function name, parameter list and
others.
>> Should I inherit "clang::Decl" to express C++/CX elements
like Objective-C
>> does?
>> 
>> I think if I want to output C++/CX code using clang, I should inherit
some
>> classes in CodeGen. Should I do this? Or is it possible to be done in a
plugin?
>> 
>> Could you help me?
It sounds like your goal is to take C++ code as an input and then to generate
C++/CX. If so, you can do this with either a plugin or (better yet) with the
tooling infrastructure. The various options are described here:

	http://clang.llvm.org/docs/Tooling.html

Your best bet would be to use Clang as a source-to-source translation from C++
to C++/CX. That way, you don't have to extend Clang to actually represent
C++/CX. Rather, you just emit the C++/CX source code (as text) and can hand that
off to a C++/CX compiler.

If your actual plan is to parse C++/CX in Clang, that cannot be done with a
plugin or with tooling. You would need to write significant extensions to
Clang's parser, AST, semantic analysis, and IR generation.

	- Doug

Hello Wei-Ren,Thanks for your tips and could you give me some ideas about this
question?I think I need to make a new AST to describe C++/CX code, then convert
each node in C++ AST of clang, using "RecursiveASTVisitor", to
corresponding node of C++/CX's AST. If so, I think the key is how to build
the AST of C++/CX.What's your opinion?Thank you.Jeffrey. ----- 原文 ----- 发件人:
陳韋任 (Wei-Ren Chen) 主　题: Re: [LLVMdev] Is it possible to convert C++ code to
C++/CX code via a plugin of clang?时　间: 2012年6月8日  11:13:44抄　送: llvmdev,
 cfe-dev at cs.uiuc.edu,    CC'ed to clang ML. You can
post clang question on clang ML. :-)On Thu, Jun 07, 2012 at 06:23:15PM +0800,
yangzhi0104 at sohu.com wrote:> Hello Guys,> > I am
developing a plugin of clang and hope it can convert some C++ functions
to> C++/CX wrapper classes for WinRT system. If so, it would do a lot of
work> automatically.> > Now I have been somewhere. Using
clang libraries, I could fetch the elements of> C++ code for example,
return type, function name, parameter list and others.> Should I inherit
"clang::Decl" to express C++/CX elements like Objective-C>
does?> > I think if I want to output C++/CX code using clang, I
should inherit some> classes in CodeGen. Should I do this? Or is it
possible to be done in a plugin?> > Could you help me?>
> Thank you,> Jeffrey.> >
_______________________________________________> LLVM Developers mailing
list> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu>
http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev-- Wei-Ren Chen (陳韋任)Computer
Systems Lab, Institute of Information Science,Academia Sinica, Taiwan
(R.O.C.)Tel:886-2-2788-3799 #1667Homepage: http://people.cs.nctu.edu.tw/~chenwj
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